mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
ac8b8d82e1
Removing the "stop at ancestor" parameter from functions that compute AGR meant that nsLayoutUtils::GetAnimatedGeometryRootFor could no longer pass the display item's reference frame as the "stop at ancestor" which meant that the AGR could cross the reference frame for the item, which we don't want. So we make transformed frames into AGRs. This makes the computation of display items whose frames are transformed tricky. We need the AGR of the transform item to be the ancestor AGR, not the underlying frame of the transform item (which is now an AGR). So we modify nsLayoutUtils::GetAnimatedGeometryRootFor to handle this. (The patch from bug 1205087 didn't suffer from this problem because it special cased the computation of the AGR of transform items. Leaving anybody who called nsLayoutUtils::GetAnimatedGeometryRootFor to get the wrong result.) The computation of the AGR for scroll metadata in ContainerState::ProcessDisplayItems specifically bypassed nsLayoutUtils::GetAnimatedGeometryRootFor to avoid it's special processing of fixed background items. However we do want the AGR for scroll metadata to do this special processing of transform items. So we add a flag to bypass the fixed background behaviour and use it for the scroll metadata AGR.
6183 lines
221 KiB
C++
6183 lines
221 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: set ts=2 sw=2 et tw=78:
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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/*
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* structures that represent things to be painted (ordered in z-order),
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* used during painting and hit testing
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*/
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#include "nsDisplayList.h"
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#include <stdint.h>
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#include <algorithm>
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#include "gfxUtils.h"
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#include "mozilla/dom/TabChild.h"
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#include "mozilla/dom/KeyframeEffect.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/layers/PLayerTransaction.h"
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#include "nsCSSRendering.h"
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#include "nsRenderingContext.h"
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#include "nsISelectionController.h"
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#include "nsIPresShell.h"
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#include "nsRegion.h"
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#include "nsStyleStructInlines.h"
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#include "nsStyleTransformMatrix.h"
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#include "gfxMatrix.h"
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#include "gfxPrefs.h"
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#include "gfxVR.h"
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#include "nsSVGIntegrationUtils.h"
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#include "nsSVGUtils.h"
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#include "nsLayoutUtils.h"
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#include "nsIScrollableFrame.h"
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#include "nsIFrameInlines.h"
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#include "nsThemeConstants.h"
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#include "LayerTreeInvalidation.h"
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#include "imgIContainer.h"
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#include "BasicLayers.h"
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#include "nsBoxFrame.h"
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#include "nsViewportFrame.h"
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#include "nsSubDocumentFrame.h"
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#include "nsSVGEffects.h"
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#include "nsSVGElement.h"
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#include "nsSVGClipPathFrame.h"
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#include "GeckoProfiler.h"
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#include "nsAnimationManager.h"
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#include "nsTransitionManager.h"
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#include "nsViewManager.h"
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#include "ImageLayers.h"
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#include "ImageContainer.h"
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#include "nsCanvasFrame.h"
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#include "StickyScrollContainer.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/LookAndFeel.h"
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#include "mozilla/PendingAnimationTracker.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/UniquePtr.h"
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#include "ActiveLayerTracker.h"
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#include "nsContentUtils.h"
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#include "nsPrintfCString.h"
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#include "UnitTransforms.h"
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#include "LayersLogging.h"
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#include "FrameLayerBuilder.h"
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#include "mozilla/EventStateManager.h"
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#include "RestyleManager.h"
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#include "nsCaret.h"
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#include "nsISelection.h"
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#include "nsDOMTokenList.h"
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#include "mozilla/RuleNodeCacheConditions.h"
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#include "nsCSSProps.h"
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#include "nsPluginFrame.h"
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// GetCurrentTime is defined in winbase.h as zero argument macro forwarding to
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// GetTickCount().
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#ifdef GetCurrentTime
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#undef GetCurrentTime
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#endif
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using namespace mozilla;
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using namespace mozilla::layers;
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using namespace mozilla::dom;
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using namespace mozilla::layout;
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using namespace mozilla::gfx;
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typedef FrameMetrics::ViewID ViewID;
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typedef nsStyleTransformMatrix::TransformReferenceBox TransformReferenceBox;
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#ifdef DEBUG
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static bool
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SpammyLayoutWarningsEnabled()
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{
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static bool sValue = false;
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static bool sValueInitialized = false;
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if (!sValueInitialized) {
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Preferences::GetBool("layout.spammy_warnings.enabled", &sValue);
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sValueInitialized = true;
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}
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return sValue;
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}
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#endif
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static inline CSSAngle
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MakeCSSAngle(const nsCSSValue& aValue)
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{
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return CSSAngle(aValue.GetAngleValue(), aValue.GetUnit());
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}
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static void AddTransformFunctions(nsCSSValueList* aList,
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nsStyleContext* aContext,
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nsPresContext* aPresContext,
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TransformReferenceBox& aRefBox,
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InfallibleTArray<TransformFunction>& aFunctions)
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{
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if (aList->mValue.GetUnit() == eCSSUnit_None) {
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return;
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}
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for (const nsCSSValueList* curr = aList; curr; curr = curr->mNext) {
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const nsCSSValue& currElem = curr->mValue;
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NS_ASSERTION(currElem.GetUnit() == eCSSUnit_Function,
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"Stream should consist solely of functions!");
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nsCSSValue::Array* array = currElem.GetArrayValue();
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RuleNodeCacheConditions conditions;
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switch (nsStyleTransformMatrix::TransformFunctionOf(array)) {
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case eCSSKeyword_rotatex:
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{
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CSSAngle theta = MakeCSSAngle(array->Item(1));
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aFunctions.AppendElement(RotationX(theta));
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break;
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}
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case eCSSKeyword_rotatey:
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{
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CSSAngle theta = MakeCSSAngle(array->Item(1));
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aFunctions.AppendElement(RotationY(theta));
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break;
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}
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case eCSSKeyword_rotatez:
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{
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CSSAngle theta = MakeCSSAngle(array->Item(1));
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aFunctions.AppendElement(RotationZ(theta));
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break;
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}
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case eCSSKeyword_rotate:
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{
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CSSAngle theta = MakeCSSAngle(array->Item(1));
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aFunctions.AppendElement(Rotation(theta));
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break;
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}
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case eCSSKeyword_rotate3d:
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{
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double x = array->Item(1).GetFloatValue();
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double y = array->Item(2).GetFloatValue();
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double z = array->Item(3).GetFloatValue();
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CSSAngle theta = MakeCSSAngle(array->Item(4));
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aFunctions.AppendElement(Rotation3D(x, y, z, theta));
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break;
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}
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case eCSSKeyword_scalex:
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{
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double x = array->Item(1).GetFloatValue();
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aFunctions.AppendElement(Scale(x, 1, 1));
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break;
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}
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case eCSSKeyword_scaley:
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{
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double y = array->Item(1).GetFloatValue();
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aFunctions.AppendElement(Scale(1, y, 1));
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break;
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}
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case eCSSKeyword_scalez:
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{
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double z = array->Item(1).GetFloatValue();
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aFunctions.AppendElement(Scale(1, 1, z));
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break;
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}
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case eCSSKeyword_scale:
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{
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double x = array->Item(1).GetFloatValue();
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// scale(x) is shorthand for scale(x, x);
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double y = array->Count() == 2 ? x : array->Item(2).GetFloatValue();
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aFunctions.AppendElement(Scale(x, y, 1));
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break;
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}
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case eCSSKeyword_scale3d:
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{
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double x = array->Item(1).GetFloatValue();
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double y = array->Item(2).GetFloatValue();
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double z = array->Item(3).GetFloatValue();
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aFunctions.AppendElement(Scale(x, y, z));
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break;
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}
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case eCSSKeyword_translatex:
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{
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double x = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(1), aContext, aPresContext, conditions,
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&aRefBox, &TransformReferenceBox::Width);
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aFunctions.AppendElement(Translation(x, 0, 0));
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break;
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}
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case eCSSKeyword_translatey:
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{
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double y = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(1), aContext, aPresContext, conditions,
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&aRefBox, &TransformReferenceBox::Height);
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aFunctions.AppendElement(Translation(0, y, 0));
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break;
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}
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case eCSSKeyword_translatez:
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{
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double z = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(1), aContext, aPresContext, conditions,
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nullptr);
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aFunctions.AppendElement(Translation(0, 0, z));
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break;
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}
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case eCSSKeyword_translate:
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{
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double x = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(1), aContext, aPresContext, conditions,
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&aRefBox, &TransformReferenceBox::Width);
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// translate(x) is shorthand for translate(x, 0)
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double y = 0;
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if (array->Count() == 3) {
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y = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(2), aContext, aPresContext, conditions,
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&aRefBox, &TransformReferenceBox::Height);
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}
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aFunctions.AppendElement(Translation(x, y, 0));
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break;
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}
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case eCSSKeyword_translate3d:
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{
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double x = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(1), aContext, aPresContext, conditions,
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&aRefBox, &TransformReferenceBox::Width);
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double y = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(2), aContext, aPresContext, conditions,
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&aRefBox, &TransformReferenceBox::Height);
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double z = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(3), aContext, aPresContext, conditions,
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nullptr);
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aFunctions.AppendElement(Translation(x, y, z));
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break;
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}
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case eCSSKeyword_skewx:
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{
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CSSAngle x = MakeCSSAngle(array->Item(1));
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aFunctions.AppendElement(SkewX(x));
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break;
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}
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case eCSSKeyword_skewy:
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{
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CSSAngle y = MakeCSSAngle(array->Item(1));
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aFunctions.AppendElement(SkewY(y));
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break;
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}
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case eCSSKeyword_skew:
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{
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CSSAngle x = MakeCSSAngle(array->Item(1));
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// skew(x) is shorthand for skew(x, 0)
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CSSAngle y(0.0f, eCSSUnit_Degree);
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if (array->Count() == 3) {
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y = MakeCSSAngle(array->Item(2));
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}
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aFunctions.AppendElement(Skew(x, y));
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break;
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}
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case eCSSKeyword_matrix:
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{
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gfx::Matrix4x4 matrix;
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matrix._11 = array->Item(1).GetFloatValue();
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matrix._12 = array->Item(2).GetFloatValue();
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matrix._13 = 0;
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matrix._14 = 0;
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matrix._21 = array->Item(3).GetFloatValue();
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matrix._22 = array->Item(4).GetFloatValue();
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matrix._23 = 0;
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matrix._24 = 0;
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matrix._31 = 0;
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matrix._32 = 0;
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matrix._33 = 1;
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matrix._34 = 0;
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matrix._41 = array->Item(5).GetFloatValue();
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matrix._42 = array->Item(6).GetFloatValue();
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matrix._43 = 0;
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matrix._44 = 1;
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aFunctions.AppendElement(TransformMatrix(matrix));
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break;
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}
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case eCSSKeyword_matrix3d:
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{
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gfx::Matrix4x4 matrix;
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matrix._11 = array->Item(1).GetFloatValue();
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matrix._12 = array->Item(2).GetFloatValue();
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matrix._13 = array->Item(3).GetFloatValue();
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matrix._14 = array->Item(4).GetFloatValue();
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matrix._21 = array->Item(5).GetFloatValue();
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matrix._22 = array->Item(6).GetFloatValue();
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matrix._23 = array->Item(7).GetFloatValue();
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matrix._24 = array->Item(8).GetFloatValue();
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matrix._31 = array->Item(9).GetFloatValue();
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matrix._32 = array->Item(10).GetFloatValue();
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matrix._33 = array->Item(11).GetFloatValue();
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matrix._34 = array->Item(12).GetFloatValue();
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matrix._41 = array->Item(13).GetFloatValue();
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matrix._42 = array->Item(14).GetFloatValue();
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matrix._43 = array->Item(15).GetFloatValue();
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matrix._44 = array->Item(16).GetFloatValue();
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aFunctions.AppendElement(TransformMatrix(matrix));
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break;
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}
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case eCSSKeyword_interpolatematrix:
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{
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Matrix4x4 matrix;
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nsStyleTransformMatrix::ProcessInterpolateMatrix(matrix, array,
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aContext,
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aPresContext,
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conditions,
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aRefBox);
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aFunctions.AppendElement(TransformMatrix(matrix));
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break;
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}
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case eCSSKeyword_perspective:
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{
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aFunctions.AppendElement(Perspective(array->Item(1).GetFloatValue()));
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break;
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}
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default:
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NS_ERROR("Function not handled yet!");
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}
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}
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}
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static TimingFunction
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ToTimingFunction(const ComputedTimingFunction& aCTF)
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{
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if (aCTF.HasSpline()) {
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const nsSMILKeySpline* spline = aCTF.GetFunction();
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return TimingFunction(CubicBezierFunction(spline->X1(), spline->Y1(),
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spline->X2(), spline->Y2()));
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}
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uint32_t type = aCTF.GetType() == nsTimingFunction::Type::StepStart ? 1 : 2;
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return TimingFunction(StepFunction(aCTF.GetSteps(), type));
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}
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static void
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AddAnimationForProperty(nsIFrame* aFrame, const AnimationProperty& aProperty,
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dom::Animation* aAnimation, Layer* aLayer,
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AnimationData& aData, bool aPending)
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{
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MOZ_ASSERT(aLayer->AsContainerLayer(), "Should only animate ContainerLayer");
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MOZ_ASSERT(aAnimation->GetEffect(),
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"Should not be adding an animation without an effect");
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MOZ_ASSERT(!aAnimation->GetCurrentOrPendingStartTime().IsNull() ||
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(aAnimation->GetTimeline() &&
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aAnimation->GetTimeline()->TracksWallclockTime()),
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"Animation should either have a resolved start time or "
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"a timeline that tracks wallclock time");
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nsStyleContext* styleContext = aFrame->StyleContext();
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nsPresContext* presContext = aFrame->PresContext();
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TransformReferenceBox refBox(aFrame);
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layers::Animation* animation =
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aPending ?
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aLayer->AddAnimationForNextTransaction() :
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aLayer->AddAnimation();
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const AnimationTiming& timing = aAnimation->GetEffect()->Timing();
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Nullable<TimeDuration> startTime = aAnimation->GetCurrentOrPendingStartTime();
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animation->startTime() = startTime.IsNull()
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? TimeStamp()
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: aAnimation->GetTimeline()->ToTimeStamp(
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startTime.Value() + timing.mDelay);
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animation->initialCurrentTime() = aAnimation->GetCurrentTime().Value()
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- timing.mDelay;
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animation->duration() = timing.mIterationDuration;
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animation->iterationCount() = timing.mIterationCount;
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animation->direction() = timing.mDirection;
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animation->property() = aProperty.mProperty;
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animation->playbackRate() = aAnimation->PlaybackRate();
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animation->data() = aData;
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|
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for (uint32_t segIdx = 0; segIdx < aProperty.mSegments.Length(); segIdx++) {
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const AnimationPropertySegment& segment = aProperty.mSegments[segIdx];
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|
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AnimationSegment* animSegment = animation->segments().AppendElement();
|
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if (aProperty.mProperty == eCSSProperty_transform) {
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animSegment->startState() = InfallibleTArray<TransformFunction>();
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animSegment->endState() = InfallibleTArray<TransformFunction>();
|
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|
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nsCSSValueSharedList* list =
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segment.mFromValue.GetCSSValueSharedListValue();
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AddTransformFunctions(list->mHead, styleContext, presContext, refBox,
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animSegment->startState().get_ArrayOfTransformFunction());
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|
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list = segment.mToValue.GetCSSValueSharedListValue();
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AddTransformFunctions(list->mHead, styleContext, presContext, refBox,
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animSegment->endState().get_ArrayOfTransformFunction());
|
|
} else if (aProperty.mProperty == eCSSProperty_opacity) {
|
|
animSegment->startState() = segment.mFromValue.GetFloatValue();
|
|
animSegment->endState() = segment.mToValue.GetFloatValue();
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|
}
|
|
|
|
animSegment->startPortion() = segment.mFromKey;
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|
animSegment->endPortion() = segment.mToKey;
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animSegment->sampleFn() = ToTimingFunction(segment.mTimingFunction);
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|
}
|
|
}
|
|
|
|
static void
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|
AddAnimationsForProperty(nsIFrame* aFrame, nsCSSProperty aProperty,
|
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AnimationPtrArray& aAnimations,
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|
Layer* aLayer, AnimationData& aData,
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|
bool aPending)
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|
{
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|
MOZ_ASSERT(nsCSSProps::PropHasFlags(aProperty,
|
|
CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR),
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|
"inconsistent property flags");
|
|
|
|
// Add from first to last (since last overrides)
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|
for (size_t animIdx = 0; animIdx < aAnimations.Length(); animIdx++) {
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|
dom::Animation* anim = aAnimations[animIdx];
|
|
if (!anim->IsPlaying()) {
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|
continue;
|
|
}
|
|
dom::KeyframeEffectReadOnly* effect = anim->GetEffect();
|
|
MOZ_ASSERT(effect, "A playing animation should have an effect");
|
|
const AnimationProperty* property =
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effect->GetAnimationOfProperty(aProperty);
|
|
if (!property) {
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continue;
|
|
}
|
|
|
|
// Note that if mWinsInCascade on property was false,
|
|
// GetAnimationOfProperty returns null instead.
|
|
// This is what we want, since if we have an animation or transition
|
|
// that isn't actually winning in the CSS cascade, we don't want to
|
|
// send it to the compositor.
|
|
// I believe that anything that changes mWinsInCascade should
|
|
// trigger this code again, either because of a restyle that changes
|
|
// the properties in question, or because of the main-thread style
|
|
// update that results when an animation stops being in effect.
|
|
MOZ_ASSERT(property->mWinsInCascade,
|
|
"GetAnimationOfProperty already tested mWinsInCascade");
|
|
|
|
// Don't add animations that are pending if their timeline does not
|
|
// track wallclock time. This is because any pending animations on layers
|
|
// will have their start time updated with the current wallclock time.
|
|
// If we can't convert that wallclock time back to an equivalent timeline
|
|
// time, we won't be able to update the content animation and it will end
|
|
// up being out of sync with the layer animation.
|
|
//
|
|
// Currently this only happens when the timeline is driven by a refresh
|
|
// driver under test control. In this case, the next time the refresh
|
|
// driver is advanced it will trigger any pending animations.
|
|
if (anim->PlayState() == AnimationPlayState::Pending &&
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(!anim->GetTimeline() ||
|
|
!anim->GetTimeline()->TracksWallclockTime())) {
|
|
continue;
|
|
}
|
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|
|
AddAnimationForProperty(aFrame, *property, anim, aLayer, aData, aPending);
|
|
effect->SetIsRunningOnCompositor(aProperty, true);
|
|
}
|
|
}
|
|
|
|
/* static */ void
|
|
nsDisplayListBuilder::AddAnimationsAndTransitionsToLayer(Layer* aLayer,
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem,
|
|
nsIFrame* aFrame,
|
|
nsCSSProperty aProperty)
|
|
{
|
|
MOZ_ASSERT(nsCSSProps::PropHasFlags(aProperty,
|
|
CSS_PROPERTY_CAN_ANIMATE_ON_COMPOSITOR),
|
|
"inconsistent property flags");
|
|
|
|
// This function can be called in two ways: from
|
|
// nsDisplay*::BuildLayer while constructing a layer (with all
|
|
// pointers non-null), or from RestyleManager's handling of
|
|
// UpdateOpacityLayer/UpdateTransformLayer hints.
|
|
MOZ_ASSERT(!aBuilder == !aItem,
|
|
"should only be called in two configurations, with both "
|
|
"aBuilder and aItem, or with neither");
|
|
MOZ_ASSERT(!aItem || aFrame == aItem->Frame(), "frame mismatch");
|
|
|
|
// Only send animations to a layer that is actually using
|
|
// off-main-thread compositing.
|
|
if (aLayer->Manager()->GetBackendType() !=
|
|
layers::LayersBackend::LAYERS_CLIENT) {
|
|
return;
|
|
}
|
|
|
|
bool pending = !aBuilder;
|
|
|
|
if (pending) {
|
|
aLayer->ClearAnimationsForNextTransaction();
|
|
} else {
|
|
aLayer->ClearAnimations();
|
|
}
|
|
|
|
// Update the animation generation on the layer. We need to do this before
|
|
// any early returns since even if we don't add any animations to the
|
|
// layer, we still need to mark it as up-to-date with regards to animations.
|
|
// Otherwise, in RestyleManager we'll notice the discrepancy between the
|
|
// animation generation numbers and update the layer indefinitely.
|
|
uint64_t animationGeneration =
|
|
RestyleManager::GetMaxAnimationGenerationForFrame(aFrame);
|
|
aLayer->SetAnimationGeneration(animationGeneration);
|
|
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
presContext->TransitionManager()->ClearIsRunningOnCompositor(aFrame,
|
|
aProperty);
|
|
presContext->AnimationManager()->ClearIsRunningOnCompositor(aFrame,
|
|
aProperty);
|
|
AnimationCollection* transitions =
|
|
presContext->TransitionManager()->GetAnimationsForCompositor(aFrame,
|
|
aProperty);
|
|
AnimationCollection* animations =
|
|
presContext->AnimationManager()->GetAnimationsForCompositor(aFrame,
|
|
aProperty);
|
|
if (!animations && !transitions) {
|
|
return;
|
|
}
|
|
|
|
// If the frame is not prerendered, bail out.
|
|
// Do this check only during layer construction; during updating the
|
|
// caller is required to check it appropriately.
|
|
if (aItem && !aItem->CanUseAsyncAnimations(aBuilder)) {
|
|
// AnimationManager or TransitionManager need to know that we refused to
|
|
// run this animation asynchronously so that they will not throttle the
|
|
// main thread animation.
|
|
aFrame->Properties().Set(nsIFrame::RefusedAsyncAnimation(),
|
|
reinterpret_cast<void*>(intptr_t(true)));
|
|
|
|
// We need to schedule another refresh driver run so that AnimationManager
|
|
// or TransitionManager get a chance to unthrottle the animation.
|
|
aFrame->SchedulePaint();
|
|
return;
|
|
}
|
|
|
|
AnimationData data;
|
|
if (aProperty == eCSSProperty_transform) {
|
|
// XXX Performance here isn't ideal for SVG. We'd prefer to avoid resolving
|
|
// the dimensions of refBox. That said, we only get here if there are CSS
|
|
// animations or transitions on this element, and that is likely to be a
|
|
// lot rarer than transforms on SVG (the frequency of which drives the need
|
|
// for TransformReferenceBox).
|
|
TransformReferenceBox refBox(aFrame);
|
|
nsRect bounds(0, 0, refBox.Width(), refBox.Height());
|
|
// all data passed directly to the compositor should be in dev pixels
|
|
int32_t devPixelsToAppUnits = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
float scale = devPixelsToAppUnits;
|
|
Point3D offsetToTransformOrigin =
|
|
nsDisplayTransform::GetDeltaToTransformOrigin(aFrame, scale, &bounds);
|
|
Point3D offsetToPerspectiveOrigin =
|
|
nsDisplayTransform::GetDeltaToPerspectiveOrigin(aFrame, scale);
|
|
nscoord perspective = 0.0;
|
|
nsStyleContext* parentStyleContext = aFrame->StyleContext()->GetParent();
|
|
if (parentStyleContext) {
|
|
const nsStyleDisplay* disp = parentStyleContext->StyleDisplay();
|
|
if (disp && disp->mChildPerspective.GetUnit() == eStyleUnit_Coord) {
|
|
perspective = disp->mChildPerspective.GetCoordValue();
|
|
}
|
|
}
|
|
nsPoint origin;
|
|
if (aItem) {
|
|
// This branch is for display items to leverage the cache of
|
|
// nsDisplayListBuilder.
|
|
origin = aItem->ToReferenceFrame();
|
|
} else {
|
|
// This branch is running for restyling.
|
|
// Animations are animated at the coordination of the reference
|
|
// frame outside, not the given frame itself. The given frame
|
|
// is also reference frame too, so the parent's reference frame
|
|
// are used.
|
|
nsIFrame* referenceFrame =
|
|
nsLayoutUtils::GetReferenceFrame(nsLayoutUtils::GetCrossDocParentFrame(aFrame));
|
|
origin = aFrame->GetOffsetToCrossDoc(referenceFrame);
|
|
}
|
|
|
|
data = TransformData(origin, offsetToTransformOrigin,
|
|
offsetToPerspectiveOrigin, bounds, perspective,
|
|
devPixelsToAppUnits);
|
|
} else if (aProperty == eCSSProperty_opacity) {
|
|
data = null_t();
|
|
}
|
|
|
|
// When both are running, animations override transitions. We want
|
|
// to add the ones that override last.
|
|
if (transitions) {
|
|
AddAnimationsForProperty(aFrame, aProperty, transitions->mAnimations,
|
|
aLayer, data, pending);
|
|
}
|
|
|
|
if (animations) {
|
|
AddAnimationsForProperty(aFrame, aProperty, animations->mAnimations,
|
|
aLayer, data, pending);
|
|
}
|
|
}
|
|
|
|
nsDisplayListBuilder::nsDisplayListBuilder(nsIFrame* aReferenceFrame,
|
|
Mode aMode, bool aBuildCaret)
|
|
: mReferenceFrame(aReferenceFrame),
|
|
mIgnoreScrollFrame(nullptr),
|
|
mLayerEventRegions(nullptr),
|
|
mCurrentTableItem(nullptr),
|
|
mCurrentFrame(aReferenceFrame),
|
|
mCurrentReferenceFrame(aReferenceFrame),
|
|
mCurrentAnimatedGeometryRoot(nullptr),
|
|
mDirtyRect(-1,-1,-1,-1),
|
|
mGlassDisplayItem(nullptr),
|
|
mPendingScrollInfoItems(nullptr),
|
|
mCommittedScrollInfoItems(nullptr),
|
|
mMode(aMode),
|
|
mCurrentScrollParentId(FrameMetrics::NULL_SCROLL_ID),
|
|
mCurrentScrollbarTarget(FrameMetrics::NULL_SCROLL_ID),
|
|
mCurrentScrollbarFlags(0),
|
|
mIsBuildingScrollbar(false),
|
|
mCurrentScrollbarWillHaveLayer(false),
|
|
mBuildCaret(aBuildCaret),
|
|
mIgnoreSuppression(false),
|
|
mHadToIgnoreSuppression(false),
|
|
mIsAtRootOfPseudoStackingContext(false),
|
|
mIncludeAllOutOfFlows(false),
|
|
mDescendIntoSubdocuments(true),
|
|
mSelectedFramesOnly(false),
|
|
mAccurateVisibleRegions(false),
|
|
mAllowMergingAndFlattening(true),
|
|
mWillComputePluginGeometry(false),
|
|
mInTransform(false),
|
|
mIsInChromePresContext(false),
|
|
mSyncDecodeImages(false),
|
|
mIsPaintingToWindow(false),
|
|
mIsCompositingCheap(false),
|
|
mContainsPluginItem(false),
|
|
mAncestorHasApzAwareEventHandler(false),
|
|
mHaveScrollableDisplayPort(false),
|
|
mWindowDraggingAllowed(false),
|
|
mIsBuildingForPopup(nsLayoutUtils::IsPopup(aReferenceFrame)),
|
|
mForceLayerForScrollParent(false),
|
|
mAsyncPanZoomEnabled(nsLayoutUtils::AsyncPanZoomEnabled(aReferenceFrame))
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayListBuilder);
|
|
PL_InitArenaPool(&mPool, "displayListArena", 1024,
|
|
std::max(NS_ALIGNMENT_OF(void*),NS_ALIGNMENT_OF(double))-1);
|
|
RecomputeCurrentAnimatedGeometryRoot();
|
|
|
|
nsPresContext* pc = aReferenceFrame->PresContext();
|
|
nsIPresShell *shell = pc->PresShell();
|
|
if (pc->IsRenderingOnlySelection()) {
|
|
nsCOMPtr<nsISelectionController> selcon(do_QueryInterface(shell));
|
|
if (selcon) {
|
|
selcon->GetSelection(nsISelectionController::SELECTION_NORMAL,
|
|
getter_AddRefs(mBoundingSelection));
|
|
}
|
|
}
|
|
|
|
nsCSSRendering::BeginFrameTreesLocked();
|
|
PR_STATIC_ASSERT(nsDisplayItem::TYPE_MAX < (1 << nsDisplayItem::TYPE_BITS));
|
|
}
|
|
|
|
static void MarkFrameForDisplay(nsIFrame* aFrame, nsIFrame* aStopAtFrame) {
|
|
for (nsIFrame* f = aFrame; f;
|
|
f = nsLayoutUtils::GetParentOrPlaceholderFor(f)) {
|
|
if (f->GetStateBits() & NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO)
|
|
return;
|
|
f->AddStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO);
|
|
if (f == aStopAtFrame) {
|
|
// we've reached a frame that we know will be painted, so we can stop.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::SetContainsBlendMode(uint8_t aBlendMode)
|
|
{
|
|
MOZ_ASSERT(aBlendMode != NS_STYLE_BLEND_NORMAL);
|
|
mContainedBlendModes += nsCSSRendering::GetGFXBlendMode(aBlendMode);
|
|
}
|
|
|
|
bool nsDisplayListBuilder::NeedToForceTransparentSurfaceForItem(nsDisplayItem* aItem)
|
|
{
|
|
return aItem == mGlassDisplayItem || aItem->ClearsBackground();
|
|
}
|
|
|
|
void nsDisplayListBuilder::MarkOutOfFlowFrameForDisplay(nsIFrame* aDirtyFrame,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aDirtyRect)
|
|
{
|
|
nsRect dirtyRectRelativeToDirtyFrame = aDirtyRect;
|
|
DisplayItemClip clip;
|
|
const DisplayItemClip* clipPtr = nullptr;
|
|
if (nsLayoutUtils::IsFixedPosFrameInDisplayPort(aFrame) &&
|
|
IsPaintingToWindow()) {
|
|
NS_ASSERTION(aDirtyFrame == aFrame->GetParent(), "Dirty frame should be viewport frame");
|
|
// position: fixed items are reflowed into and only drawn inside the
|
|
// viewport, or the scroll position clamping scrollport size, if one is
|
|
// set.
|
|
nsIPresShell* ps = aFrame->PresContext()->PresShell();
|
|
dirtyRectRelativeToDirtyFrame.MoveTo(0, 0);
|
|
if (ps->IsScrollPositionClampingScrollPortSizeSet()) {
|
|
dirtyRectRelativeToDirtyFrame.SizeTo(ps->GetScrollPositionClampingScrollPortSize());
|
|
} else {
|
|
dirtyRectRelativeToDirtyFrame.SizeTo(aDirtyFrame->GetSize());
|
|
}
|
|
|
|
// Always clip fixed items to the root scroll frame's scrollport, because
|
|
// we skip setting the clip in ScrollFrameHelper if we have a displayport.
|
|
nsIFrame* rootScroll = aFrame->PresContext()->PresShell()->GetRootScrollFrame();
|
|
if (rootScroll) {
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(rootScroll);
|
|
|
|
nsRect clipRect = scrollable->GetScrollPortRect() + ToReferenceFrame(rootScroll);
|
|
nscoord radii[8];
|
|
bool haveRadii = rootScroll->GetPaddingBoxBorderRadii(radii);
|
|
clip.SetTo(clipRect, haveRadii ? radii : nullptr);
|
|
clipPtr = &clip;
|
|
}
|
|
}
|
|
|
|
nsRect dirty = dirtyRectRelativeToDirtyFrame - aFrame->GetOffsetTo(aDirtyFrame);
|
|
nsRect overflowRect = aFrame->GetVisualOverflowRect();
|
|
|
|
if (aFrame->IsTransformed() &&
|
|
nsLayoutUtils::HasAnimationsForCompositor(aFrame, eCSSProperty_transform)) {
|
|
/**
|
|
* Add a fuzz factor to the overflow rectangle so that elements only just
|
|
* out of view are pulled into the display list, so they can be
|
|
* prerendered if necessary.
|
|
*/
|
|
overflowRect.Inflate(nsPresContext::CSSPixelsToAppUnits(32));
|
|
}
|
|
|
|
if (!dirty.IntersectRect(dirty, overflowRect))
|
|
return;
|
|
|
|
// Combine clips if necessary
|
|
const DisplayItemClip* oldClip = mClipState.GetClipForContainingBlockDescendants();
|
|
if (clipPtr && oldClip) {
|
|
clip.IntersectWith(*oldClip);
|
|
} else if (oldClip) {
|
|
clipPtr = oldClip;
|
|
}
|
|
|
|
OutOfFlowDisplayData* data = clipPtr ? new OutOfFlowDisplayData(*clipPtr, dirty)
|
|
: new OutOfFlowDisplayData(dirty);
|
|
aFrame->Properties().Set(nsDisplayListBuilder::OutOfFlowDisplayDataProperty(), data);
|
|
|
|
MarkFrameForDisplay(aFrame, aDirtyFrame);
|
|
}
|
|
|
|
static void UnmarkFrameForDisplay(nsIFrame* aFrame) {
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
presContext->PropertyTable()->
|
|
Delete(aFrame, nsDisplayListBuilder::OutOfFlowDisplayDataProperty());
|
|
|
|
for (nsIFrame* f = aFrame; f;
|
|
f = nsLayoutUtils::GetParentOrPlaceholderFor(f)) {
|
|
if (!(f->GetStateBits() & NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO))
|
|
return;
|
|
f->RemoveStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO);
|
|
}
|
|
}
|
|
|
|
nsDisplayListBuilder::~nsDisplayListBuilder() {
|
|
NS_ASSERTION(mFramesMarkedForDisplay.Length() == 0,
|
|
"All frames should have been unmarked");
|
|
NS_ASSERTION(mPresShellStates.Length() == 0,
|
|
"All presshells should have been exited");
|
|
NS_ASSERTION(!mCurrentTableItem, "No table item should be active");
|
|
|
|
nsCSSRendering::EndFrameTreesLocked();
|
|
|
|
for (uint32_t i = 0; i < mDisplayItemClipsToDestroy.Length(); ++i) {
|
|
mDisplayItemClipsToDestroy[i]->DisplayItemClip::~DisplayItemClip();
|
|
}
|
|
|
|
PL_FinishArenaPool(&mPool);
|
|
MOZ_COUNT_DTOR(nsDisplayListBuilder);
|
|
}
|
|
|
|
uint32_t
|
|
nsDisplayListBuilder::GetBackgroundPaintFlags() {
|
|
uint32_t flags = 0;
|
|
if (mSyncDecodeImages) {
|
|
flags |= nsCSSRendering::PAINTBG_SYNC_DECODE_IMAGES;
|
|
}
|
|
if (mIsPaintingToWindow) {
|
|
flags |= nsCSSRendering::PAINTBG_TO_WINDOW;
|
|
}
|
|
return flags;
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::SubtractFromVisibleRegion(nsRegion* aVisibleRegion,
|
|
const nsRegion& aRegion)
|
|
{
|
|
if (aRegion.IsEmpty())
|
|
return;
|
|
|
|
nsRegion tmp;
|
|
tmp.Sub(*aVisibleRegion, aRegion);
|
|
// Don't let *aVisibleRegion get too complex, but don't let it fluff out
|
|
// to its bounds either, which can be very bad (see bug 516740).
|
|
// Do let aVisibleRegion get more complex if by doing so we reduce its
|
|
// area by at least half.
|
|
if (GetAccurateVisibleRegions() || tmp.GetNumRects() <= 15 ||
|
|
tmp.Area() <= aVisibleRegion->Area()/2) {
|
|
*aVisibleRegion = tmp;
|
|
}
|
|
}
|
|
|
|
nsCaret *
|
|
nsDisplayListBuilder::GetCaret() {
|
|
RefPtr<nsCaret> caret = CurrentPresShellState()->mPresShell->GetCaret();
|
|
return caret;
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::EnterPresShell(nsIFrame* aReferenceFrame,
|
|
bool aPointerEventsNoneDoc)
|
|
{
|
|
PresShellState* state = mPresShellStates.AppendElement();
|
|
state->mPresShell = aReferenceFrame->PresContext()->PresShell();
|
|
state->mCaretFrame = nullptr;
|
|
state->mFirstFrameMarkedForDisplay = mFramesMarkedForDisplay.Length();
|
|
|
|
state->mPresShell->UpdateCanvasBackground();
|
|
|
|
if (mIsPaintingToWindow) {
|
|
mReferenceFrame->AddPaintedPresShell(state->mPresShell);
|
|
|
|
state->mPresShell->IncrementPaintCount();
|
|
}
|
|
|
|
bool buildCaret = mBuildCaret;
|
|
if (mIgnoreSuppression || !state->mPresShell->IsPaintingSuppressed()) {
|
|
if (state->mPresShell->IsPaintingSuppressed()) {
|
|
mHadToIgnoreSuppression = true;
|
|
}
|
|
state->mIsBackgroundOnly = false;
|
|
} else {
|
|
state->mIsBackgroundOnly = true;
|
|
buildCaret = false;
|
|
}
|
|
|
|
bool pointerEventsNone = aPointerEventsNoneDoc;
|
|
if (IsInSubdocument()) {
|
|
pointerEventsNone |= mPresShellStates[mPresShellStates.Length() - 2].mInsidePointerEventsNoneDoc;
|
|
}
|
|
state->mInsidePointerEventsNoneDoc = pointerEventsNone;
|
|
|
|
if (!buildCaret)
|
|
return;
|
|
|
|
RefPtr<nsCaret> caret = state->mPresShell->GetCaret();
|
|
state->mCaretFrame = caret->GetPaintGeometry(&state->mCaretRect);
|
|
if (state->mCaretFrame) {
|
|
mFramesMarkedForDisplay.AppendElement(state->mCaretFrame);
|
|
MarkFrameForDisplay(state->mCaretFrame, nullptr);
|
|
}
|
|
|
|
nsPresContext* pc = aReferenceFrame->PresContext();
|
|
pc->GetDocShell()->GetWindowDraggingAllowed(&mWindowDraggingAllowed);
|
|
mIsInChromePresContext = pc->IsChrome();
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::LeavePresShell(nsIFrame* aReferenceFrame)
|
|
{
|
|
NS_ASSERTION(CurrentPresShellState()->mPresShell ==
|
|
aReferenceFrame->PresContext()->PresShell(),
|
|
"Presshell mismatch");
|
|
|
|
ResetMarkedFramesForDisplayList();
|
|
mPresShellStates.SetLength(mPresShellStates.Length() - 1);
|
|
|
|
if (!mPresShellStates.IsEmpty()) {
|
|
nsPresContext* pc = CurrentPresContext();
|
|
pc->GetDocShell()->GetWindowDraggingAllowed(&mWindowDraggingAllowed);
|
|
mIsInChromePresContext = pc->IsChrome();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::ResetMarkedFramesForDisplayList()
|
|
{
|
|
// Unmark and pop off the frames marked for display in this pres shell.
|
|
uint32_t firstFrameForShell = CurrentPresShellState()->mFirstFrameMarkedForDisplay;
|
|
for (uint32_t i = firstFrameForShell;
|
|
i < mFramesMarkedForDisplay.Length(); ++i) {
|
|
UnmarkFrameForDisplay(mFramesMarkedForDisplay[i]);
|
|
}
|
|
mFramesMarkedForDisplay.SetLength(firstFrameForShell);
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::MarkFramesForDisplayList(nsIFrame* aDirtyFrame,
|
|
const nsFrameList& aFrames,
|
|
const nsRect& aDirtyRect) {
|
|
mFramesMarkedForDisplay.SetCapacity(mFramesMarkedForDisplay.Length() + aFrames.GetLength());
|
|
for (nsIFrame* e : aFrames) {
|
|
// Skip the AccessibleCaret frame when building no caret.
|
|
if (!IsBuildingCaret()) {
|
|
nsIContent* content = e->GetContent();
|
|
if (content && content->IsInNativeAnonymousSubtree() && content->IsElement()) {
|
|
ErrorResult rv;
|
|
auto classList = content->AsElement()->ClassList();
|
|
if (classList->Contains(NS_LITERAL_STRING("moz-accessiblecaret"), rv)) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
mFramesMarkedForDisplay.AppendElement(e);
|
|
MarkOutOfFlowFrameForDisplay(aDirtyFrame, e, aDirtyRect);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Mark all preserve-3d children with
|
|
* NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO to make sure
|
|
* nsFrame::BuildDisplayListForChild() would visit them. Also compute
|
|
* dirty rect for preserve-3d children.
|
|
*
|
|
* @param aDirtyFrame is the frame to mark children extending context.
|
|
* @param aDirtyRect is the same as the dirty rect of the root of the
|
|
* current 3D context, but be translated relative to
|
|
* the aDirtyFrame.
|
|
*/
|
|
void
|
|
nsDisplayListBuilder::MarkPreserve3DFramesForDisplayList(nsIFrame* aDirtyFrame, const nsRect& aDirtyRect)
|
|
{
|
|
nsAutoTArray<nsIFrame::ChildList,4> childListArray;
|
|
aDirtyFrame->GetChildLists(&childListArray);
|
|
nsIFrame::ChildListArrayIterator lists(childListArray);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame *child = childFrames.get();
|
|
if (child->Combines3DTransformWithAncestors()) {
|
|
mFramesMarkedForDisplay.AppendElement(child);
|
|
nsRect dirty = aDirtyRect - child->GetOffsetTo(aDirtyFrame);
|
|
child->Properties().Set(nsDisplayListBuilder::Preserve3DDirtyRectProperty(),
|
|
new nsRect(dirty));
|
|
|
|
MarkFrameForDisplay(child, aDirtyFrame);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void*
|
|
nsDisplayListBuilder::Allocate(size_t aSize)
|
|
{
|
|
void *tmp;
|
|
PL_ARENA_ALLOCATE(tmp, &mPool, aSize);
|
|
if (!tmp) {
|
|
NS_ABORT_OOM(aSize);
|
|
}
|
|
return tmp;
|
|
}
|
|
|
|
const DisplayItemClip*
|
|
nsDisplayListBuilder::AllocateDisplayItemClip(const DisplayItemClip& aOriginal)
|
|
{
|
|
void* p = Allocate(sizeof(DisplayItemClip));
|
|
if (!aOriginal.GetRoundedRectCount()) {
|
|
memcpy(p, &aOriginal, sizeof(DisplayItemClip));
|
|
return static_cast<DisplayItemClip*>(p);
|
|
}
|
|
|
|
DisplayItemClip* c = new (p) DisplayItemClip(aOriginal);
|
|
mDisplayItemClipsToDestroy.AppendElement(c);
|
|
return c;
|
|
}
|
|
|
|
const nsIFrame*
|
|
nsDisplayListBuilder::FindReferenceFrameFor(const nsIFrame *aFrame,
|
|
nsPoint* aOffset)
|
|
{
|
|
if (aFrame == mCurrentFrame) {
|
|
if (aOffset) {
|
|
*aOffset = mCurrentOffsetToReferenceFrame;
|
|
}
|
|
return mCurrentReferenceFrame;
|
|
}
|
|
for (const nsIFrame* f = aFrame; f; f = nsLayoutUtils::GetCrossDocParentFrame(f))
|
|
{
|
|
if (f == mReferenceFrame || f->IsTransformed()) {
|
|
if (aOffset) {
|
|
*aOffset = aFrame->GetOffsetToCrossDoc(f);
|
|
}
|
|
return f;
|
|
}
|
|
}
|
|
if (aOffset) {
|
|
*aOffset = aFrame->GetOffsetToCrossDoc(mReferenceFrame);
|
|
}
|
|
return mReferenceFrame;
|
|
}
|
|
|
|
// Sticky frames are active if their nearest scrollable frame is also active.
|
|
static bool
|
|
IsStickyFrameActive(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsIFrame* aParent)
|
|
{
|
|
MOZ_ASSERT(aFrame->StyleDisplay()->mPosition == NS_STYLE_POSITION_STICKY);
|
|
|
|
// Find the nearest scrollframe.
|
|
nsIFrame* cursor = aFrame;
|
|
nsIFrame* parent = aParent;
|
|
while (parent->GetType() != nsGkAtoms::scrollFrame) {
|
|
cursor = parent;
|
|
if ((parent = nsLayoutUtils::GetCrossDocParentFrame(cursor)) == nullptr) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
nsIScrollableFrame* sf = do_QueryFrame(parent);
|
|
return sf->IsScrollingActive(aBuilder) && sf->GetScrolledFrame() == cursor;
|
|
}
|
|
|
|
bool
|
|
nsDisplayListBuilder::IsAnimatedGeometryRoot(nsIFrame* aFrame, nsIFrame** aParent)
|
|
{
|
|
if (nsLayoutUtils::IsPopup(aFrame))
|
|
return true;
|
|
if (ActiveLayerTracker::IsOffsetOrMarginStyleAnimated(aFrame))
|
|
return true;
|
|
if (!aFrame->GetParent() &&
|
|
nsLayoutUtils::ViewportHasDisplayPort(aFrame->PresContext())) {
|
|
// Viewport frames in a display port need to be animated geometry roots
|
|
// for background-attachment:fixed elements.
|
|
return true;
|
|
}
|
|
if (aFrame->IsTransformed()) {
|
|
return true;
|
|
}
|
|
|
|
nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrame(aFrame);
|
|
if (!parent)
|
|
return true;
|
|
|
|
nsIAtom* parentType = parent->GetType();
|
|
// Treat the slider thumb as being as an active scrolled root when it wants
|
|
// its own layer so that it can move without repainting.
|
|
if (parentType == nsGkAtoms::sliderFrame && nsLayoutUtils::IsScrollbarThumbLayerized(aFrame)) {
|
|
return true;
|
|
}
|
|
|
|
if (aFrame->StyleDisplay()->mPosition == NS_STYLE_POSITION_STICKY &&
|
|
IsStickyFrameActive(this, aFrame, parent))
|
|
{
|
|
return true;
|
|
}
|
|
|
|
if (parentType == nsGkAtoms::scrollFrame || parentType == nsGkAtoms::listControlFrame) {
|
|
nsIScrollableFrame* sf = do_QueryFrame(parent);
|
|
if (sf->IsScrollingActive(this) && sf->GetScrolledFrame() == aFrame) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// Fixed-pos frames are parented by the viewport frame, which has no parent.
|
|
if (nsLayoutUtils::IsFixedPosFrameInDisplayPort(aFrame)) {
|
|
return true;
|
|
}
|
|
|
|
if (aParent) {
|
|
*aParent = parent;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayListBuilder::GetCachedAnimatedGeometryRoot(const nsIFrame* aFrame,
|
|
nsIFrame** aOutResult)
|
|
{
|
|
return mAnimatedGeometryRootCache.Get(const_cast<nsIFrame*>(aFrame), aOutResult);
|
|
}
|
|
|
|
static nsIFrame*
|
|
ComputeAnimatedGeometryRootFor(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
bool aUseCache = false)
|
|
{
|
|
nsIFrame* cursor = aFrame;
|
|
while (cursor != aBuilder->RootReferenceFrame()) {
|
|
if (aUseCache) {
|
|
nsIFrame* result;
|
|
if (aBuilder->GetCachedAnimatedGeometryRoot(cursor, &result)) {
|
|
return result;
|
|
}
|
|
}
|
|
nsIFrame* next;
|
|
if (aBuilder->IsAnimatedGeometryRoot(cursor, &next))
|
|
return cursor;
|
|
cursor = next;
|
|
}
|
|
return cursor;
|
|
}
|
|
|
|
nsIFrame*
|
|
nsDisplayListBuilder::FindAnimatedGeometryRootFor(nsIFrame* aFrame)
|
|
{
|
|
if (aFrame == mCurrentFrame) {
|
|
return mCurrentAnimatedGeometryRoot;
|
|
}
|
|
|
|
nsIFrame* result = ComputeAnimatedGeometryRootFor(this, aFrame, true);
|
|
mAnimatedGeometryRootCache.Put(aFrame, result);
|
|
return result;
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::RecomputeCurrentAnimatedGeometryRoot()
|
|
{
|
|
// technically we only need to clear any part of the cache that relies on
|
|
// the AGR of mCurrentFrame (i.e. all entries in mAnimatedGeometryRootCache
|
|
// where the key frame is a descendant of mCurrentFrame) but doing that is
|
|
// complicated so we just clear the whole thing.
|
|
mAnimatedGeometryRootCache.Clear();
|
|
|
|
mCurrentAnimatedGeometryRoot = ComputeAnimatedGeometryRootFor(this, const_cast<nsIFrame *>(mCurrentFrame));
|
|
MOZ_ASSERT(nsLayoutUtils::IsAncestorFrameCrossDoc(RootReferenceFrame(), mCurrentAnimatedGeometryRoot));
|
|
mAnimatedGeometryRootCache.Put(const_cast<nsIFrame*>(mCurrentFrame), mCurrentAnimatedGeometryRoot);
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::AdjustWindowDraggingRegion(nsIFrame* aFrame)
|
|
{
|
|
if (!mWindowDraggingAllowed || !IsForPainting()) {
|
|
return;
|
|
}
|
|
|
|
Matrix4x4 referenceFrameToRootReferenceFrame;
|
|
|
|
// The const_cast is for nsLayoutUtils::GetTransformToAncestor.
|
|
nsIFrame* referenceFrame = const_cast<nsIFrame*>(FindReferenceFrameFor(aFrame));
|
|
|
|
if (IsInTransform()) {
|
|
// Only support 2d rectilinear transforms. Transform support is needed for
|
|
// the horizontal flip transform that's applied to the urlbar textbox in
|
|
// RTL mode - it should be able to exclude itself from the draggable region.
|
|
referenceFrameToRootReferenceFrame =
|
|
nsLayoutUtils::GetTransformToAncestor(referenceFrame, mReferenceFrame);
|
|
Matrix referenceFrameToRootReferenceFrame2d;
|
|
if (!referenceFrameToRootReferenceFrame.Is2D(&referenceFrameToRootReferenceFrame2d) ||
|
|
!referenceFrameToRootReferenceFrame2d.IsRectilinear()) {
|
|
return;
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(referenceFrame == mReferenceFrame,
|
|
"referenceFrameToRootReferenceFrame needs to be adjusted");
|
|
}
|
|
|
|
// We do some basic visibility checking on the frame's border box here.
|
|
// We intersect it both with the current dirty rect and with the current
|
|
// clip. Either one is just a conservative approximation on its own, but
|
|
// their intersection luckily works well enough for our purposes, so that
|
|
// we don't have to do full-blown visibility computations.
|
|
// The most important case we need to handle is the scrolled-off tab:
|
|
// If the tab bar overflows, tab parts that are clipped by the scrollbox
|
|
// should not be allowed to interfere with the window dragging region. Using
|
|
// just the current DisplayItemClip is not enough to cover this case
|
|
// completely because clips are reset while building stacking context
|
|
// contents, so for example we'd fail to clip frames that have a clip path
|
|
// applied to them. But the current dirty rect doesn't get reset in that
|
|
// case, so we use it to make this case work.
|
|
nsRect borderBox = aFrame->GetRectRelativeToSelf().Intersect(mDirtyRect);
|
|
borderBox += ToReferenceFrame(aFrame);
|
|
const DisplayItemClip* clip = ClipState().GetCurrentCombinedClip(this);
|
|
if (clip) {
|
|
borderBox = clip->ApplyNonRoundedIntersection(borderBox);
|
|
}
|
|
if (!borderBox.IsEmpty()) {
|
|
LayoutDeviceRect devPixelBorderBox =
|
|
LayoutDevicePixel::FromAppUnits(borderBox, aFrame->PresContext()->AppUnitsPerDevPixel());
|
|
LayoutDeviceRect transformedDevPixelBorderBox =
|
|
TransformTo<LayoutDevicePixel>(referenceFrameToRootReferenceFrame, devPixelBorderBox);
|
|
transformedDevPixelBorderBox.Round();
|
|
LayoutDeviceIntRect transformedDevPixelBorderBoxInt;
|
|
if (transformedDevPixelBorderBox.ToIntRect(&transformedDevPixelBorderBoxInt)) {
|
|
const nsStyleUserInterface* styleUI = aFrame->StyleUserInterface();
|
|
if (styleUI->mWindowDragging == NS_STYLE_WINDOW_DRAGGING_DRAG) {
|
|
mWindowDraggingRegion.OrWith(LayoutDevicePixel::ToUntyped(transformedDevPixelBorderBoxInt));
|
|
} else {
|
|
mWindowDraggingRegion.SubOut(LayoutDevicePixel::ToUntyped(transformedDevPixelBorderBoxInt));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const uint32_t gWillChangeAreaMultiplier = 3;
|
|
static uint32_t GetWillChangeCost(nsIFrame* aFrame,
|
|
const nsSize& aSize) {
|
|
// There's significant overhead for each layer created from Gecko
|
|
// (IPC+Shared Objects) and from the backend (like an OpenGL texture).
|
|
// Therefore we set a minimum cost threshold of a 64x64 area.
|
|
int minBudgetCost = 64 * 64;
|
|
|
|
uint32_t budgetCost =
|
|
std::max(minBudgetCost,
|
|
nsPresContext::AppUnitsToIntCSSPixels(aSize.width) *
|
|
nsPresContext::AppUnitsToIntCSSPixels(aSize.height));
|
|
|
|
return budgetCost;
|
|
}
|
|
|
|
bool
|
|
nsDisplayListBuilder::AddToWillChangeBudget(nsIFrame* aFrame,
|
|
const nsSize& aSize) {
|
|
if (mBudgetSet.Contains(aFrame)) {
|
|
return true; // Already accounted
|
|
}
|
|
|
|
nsPresContext* key = aFrame->PresContext();
|
|
if (!mWillChangeBudget.Contains(key)) {
|
|
mWillChangeBudget.Put(key, DocumentWillChangeBudget());
|
|
}
|
|
|
|
DocumentWillChangeBudget budget;
|
|
mWillChangeBudget.Get(key, &budget);
|
|
|
|
nsRect area = aFrame->PresContext()->GetVisibleArea();
|
|
uint32_t budgetLimit = nsPresContext::AppUnitsToIntCSSPixels(area.width) *
|
|
nsPresContext::AppUnitsToIntCSSPixels(area.height);
|
|
|
|
uint32_t cost = GetWillChangeCost(aFrame, aSize);
|
|
bool onBudget = (budget.mBudget + cost) /
|
|
gWillChangeAreaMultiplier < budgetLimit;
|
|
|
|
if (onBudget) {
|
|
budget.mBudget += cost;
|
|
mWillChangeBudget.Put(key, budget);
|
|
mBudgetSet.PutEntry(aFrame);
|
|
}
|
|
|
|
return onBudget;
|
|
}
|
|
|
|
bool
|
|
nsDisplayListBuilder::IsInWillChangeBudget(nsIFrame* aFrame,
|
|
const nsSize& aSize) {
|
|
bool onBudget = AddToWillChangeBudget(aFrame, aSize);
|
|
|
|
if (!onBudget) {
|
|
nsString usageStr;
|
|
usageStr.AppendInt(GetWillChangeCost(aFrame, aSize));
|
|
|
|
nsString multiplierStr;
|
|
multiplierStr.AppendInt(gWillChangeAreaMultiplier);
|
|
|
|
nsString limitStr;
|
|
nsRect area = aFrame->PresContext()->GetVisibleArea();
|
|
uint32_t budgetLimit = nsPresContext::AppUnitsToIntCSSPixels(area.width) *
|
|
nsPresContext::AppUnitsToIntCSSPixels(area.height);
|
|
limitStr.AppendInt(budgetLimit);
|
|
|
|
const char16_t* params[] = { multiplierStr.get(), limitStr.get() };
|
|
aFrame->PresContext()->Document()->WarnOnceAbout(
|
|
nsIDocument::eIgnoringWillChangeOverBudget, false,
|
|
params, ArrayLength(params));
|
|
}
|
|
return onBudget;
|
|
}
|
|
|
|
nsDisplayList*
|
|
nsDisplayListBuilder::EnterScrollInfoItemHoisting(nsDisplayList* aScrollInfoItemStorage)
|
|
{
|
|
MOZ_ASSERT(ShouldBuildScrollInfoItemsForHoisting());
|
|
nsDisplayList* old = mPendingScrollInfoItems;
|
|
mPendingScrollInfoItems = aScrollInfoItemStorage;
|
|
return old;
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::LeaveScrollInfoItemHoisting(nsDisplayList* aScrollInfoItemStorage)
|
|
{
|
|
MOZ_ASSERT(ShouldBuildScrollInfoItemsForHoisting());
|
|
mPendingScrollInfoItems = aScrollInfoItemStorage;
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::AppendNewScrollInfoItemForHoisting(nsDisplayScrollInfoLayer* aScrollInfoItem)
|
|
{
|
|
MOZ_ASSERT(ShouldBuildScrollInfoItemsForHoisting());
|
|
mPendingScrollInfoItems->AppendNewToTop(aScrollInfoItem);
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::StoreDirtyRectForScrolledContents(const nsIFrame* aScrollableFrame,
|
|
const nsRect& aDirty)
|
|
{
|
|
mDirtyRectForScrolledContents.Put(const_cast<nsIFrame*>(aScrollableFrame),
|
|
aDirty + ToReferenceFrame(aScrollableFrame));
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayListBuilder::GetDirtyRectForScrolledContents(const nsIFrame* aScrollableFrame) const
|
|
{
|
|
nsRect result;
|
|
if (!mDirtyRectForScrolledContents.Get(const_cast<nsIFrame*>(aScrollableFrame), &result)) {
|
|
return nsRect();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsDisplayListBuilder::IsBuildingLayerEventRegions()
|
|
{
|
|
if (mMode == PAINTING) {
|
|
// Note: this is the only place that gets to query LayoutEventRegionsEnabled
|
|
// 'directly' - other code should call this function.
|
|
return gfxPrefs::LayoutEventRegionsEnabledDoNotUseDirectly() ||
|
|
mAsyncPanZoomEnabled;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void nsDisplayListSet::MoveTo(const nsDisplayListSet& aDestination) const
|
|
{
|
|
aDestination.BorderBackground()->AppendToTop(BorderBackground());
|
|
aDestination.BlockBorderBackgrounds()->AppendToTop(BlockBorderBackgrounds());
|
|
aDestination.Floats()->AppendToTop(Floats());
|
|
aDestination.Content()->AppendToTop(Content());
|
|
aDestination.PositionedDescendants()->AppendToTop(PositionedDescendants());
|
|
aDestination.Outlines()->AppendToTop(Outlines());
|
|
}
|
|
|
|
static void
|
|
MoveListTo(nsDisplayList* aList, nsTArray<nsDisplayItem*>* aElements) {
|
|
nsDisplayItem* item;
|
|
while ((item = aList->RemoveBottom()) != nullptr) {
|
|
aElements->AppendElement(item);
|
|
}
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayList::GetBounds(nsDisplayListBuilder* aBuilder) const {
|
|
nsRect bounds;
|
|
for (nsDisplayItem* i = GetBottom(); i != nullptr; i = i->GetAbove()) {
|
|
bounds.UnionRect(bounds, i->GetClippedBounds(aBuilder));
|
|
}
|
|
return bounds;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayList::GetVisibleRect() const {
|
|
nsRect result;
|
|
for (nsDisplayItem* i = GetBottom(); i != nullptr; i = i->GetAbove()) {
|
|
result.UnionRect(result, i->GetVisibleRect());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsDisplayList::ComputeVisibilityForRoot(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
nsIFrame* aDisplayPortFrame) {
|
|
PROFILER_LABEL("nsDisplayList", "ComputeVisibilityForRoot",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
|
|
nsRegion r;
|
|
r.And(*aVisibleRegion, GetBounds(aBuilder));
|
|
return ComputeVisibilityForSublist(aBuilder, aVisibleRegion,
|
|
r.GetBounds(), aDisplayPortFrame);
|
|
}
|
|
|
|
static nsRegion
|
|
TreatAsOpaque(nsDisplayItem* aItem, nsDisplayListBuilder* aBuilder)
|
|
{
|
|
bool snap;
|
|
nsRegion opaque = aItem->GetOpaqueRegion(aBuilder, &snap);
|
|
if (aBuilder->IsForPluginGeometry() &&
|
|
aItem->GetType() != nsDisplayItem::TYPE_LAYER_EVENT_REGIONS)
|
|
{
|
|
// Treat all leaf chrome items as opaque, unless their frames are opacity:0.
|
|
// Since opacity:0 frames generate an nsDisplayOpacity, that item will
|
|
// not be treated as opaque here, so opacity:0 chrome content will be
|
|
// effectively ignored, as it should be.
|
|
// We treat leaf chrome items as opaque to ensure that they cover
|
|
// content plugins, for security reasons.
|
|
// Non-leaf chrome items don't render contents of their own so shouldn't
|
|
// be treated as opaque (and their bounds is just the union of their
|
|
// children, which might be a large area their contents don't really cover).
|
|
nsIFrame* f = aItem->Frame();
|
|
if (f->PresContext()->IsChrome() && !aItem->GetChildren() &&
|
|
f->StyleDisplay()->mOpacity != 0.0) {
|
|
opaque = aItem->GetBounds(aBuilder, &snap);
|
|
}
|
|
}
|
|
if (opaque.IsEmpty()) {
|
|
return opaque;
|
|
}
|
|
nsRegion opaqueClipped;
|
|
nsRegionRectIterator iter(opaque);
|
|
for (const nsRect* r = iter.Next(); r; r = iter.Next()) {
|
|
opaqueClipped.Or(opaqueClipped, aItem->GetClip().ApproximateIntersectInward(*r));
|
|
}
|
|
return opaqueClipped;
|
|
}
|
|
|
|
bool
|
|
nsDisplayList::ComputeVisibilityForSublist(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aListVisibleBounds,
|
|
nsIFrame* aDisplayPortFrame) {
|
|
#ifdef DEBUG
|
|
nsRegion r;
|
|
r.And(*aVisibleRegion, GetBounds(aBuilder));
|
|
NS_ASSERTION(r.GetBounds().IsEqualInterior(aListVisibleBounds),
|
|
"bad aListVisibleBounds");
|
|
#endif
|
|
|
|
bool anyVisible = false;
|
|
|
|
nsAutoTArray<nsDisplayItem*, 512> elements;
|
|
MoveListTo(this, &elements);
|
|
|
|
for (int32_t i = elements.Length() - 1; i >= 0; --i) {
|
|
nsDisplayItem* item = elements[i];
|
|
nsRect bounds = item->GetClippedBounds(aBuilder);
|
|
|
|
nsRegion itemVisible;
|
|
itemVisible.And(*aVisibleRegion, bounds);
|
|
item->mVisibleRect = itemVisible.GetBounds();
|
|
|
|
if (item->ComputeVisibility(aBuilder, aVisibleRegion)) {
|
|
anyVisible = true;
|
|
|
|
nsRegion opaque = TreatAsOpaque(item, aBuilder);
|
|
// Subtract opaque item from the visible region
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, opaque);
|
|
}
|
|
AppendToBottom(item);
|
|
}
|
|
|
|
mIsOpaque = !aVisibleRegion->Intersects(aListVisibleBounds);
|
|
return anyVisible;
|
|
}
|
|
|
|
static bool
|
|
TriggerPendingAnimationsOnSubDocuments(nsIDocument* aDocument, void* aReadyTime)
|
|
{
|
|
PendingAnimationTracker* tracker = aDocument->GetPendingAnimationTracker();
|
|
if (tracker) {
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
// If paint-suppression is in effect then we haven't finished painting
|
|
// this document yet so we shouldn't start animations
|
|
if (!shell || !shell->IsPaintingSuppressed()) {
|
|
const TimeStamp& readyTime = *static_cast<TimeStamp*>(aReadyTime);
|
|
tracker->TriggerPendingAnimationsOnNextTick(readyTime);
|
|
}
|
|
}
|
|
aDocument->EnumerateSubDocuments(TriggerPendingAnimationsOnSubDocuments,
|
|
aReadyTime);
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
TriggerPendingAnimations(nsIDocument* aDocument,
|
|
const TimeStamp& aReadyTime) {
|
|
MOZ_ASSERT(!aReadyTime.IsNull(),
|
|
"Animation ready time is not set. Perhaps we're using a layer"
|
|
" manager that doesn't update it");
|
|
TriggerPendingAnimationsOnSubDocuments(aDocument,
|
|
const_cast<TimeStamp*>(&aReadyTime));
|
|
}
|
|
|
|
LayerManager*
|
|
nsDisplayListBuilder::GetWidgetLayerManager(nsView** aView, bool* aAllowRetaining)
|
|
{
|
|
nsView* view = RootReferenceFrame()->GetView();
|
|
if (aView) {
|
|
*aView = view;
|
|
}
|
|
if (RootReferenceFrame() != nsLayoutUtils::GetDisplayRootFrame(RootReferenceFrame())) {
|
|
return nullptr;
|
|
}
|
|
nsIWidget* window = RootReferenceFrame()->GetNearestWidget();
|
|
if (window) {
|
|
return window->GetLayerManager(aAllowRetaining);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/**
|
|
* We paint by executing a layer manager transaction, constructing a
|
|
* single layer representing the display list, and then making it the
|
|
* root of the layer manager, drawing into the PaintedLayers.
|
|
*/
|
|
already_AddRefed<LayerManager> nsDisplayList::PaintRoot(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx,
|
|
uint32_t aFlags) {
|
|
PROFILER_LABEL("nsDisplayList", "PaintRoot",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
|
|
RefPtr<LayerManager> layerManager;
|
|
bool widgetTransaction = false;
|
|
bool allowRetaining = false;
|
|
bool doBeginTransaction = true;
|
|
nsView *view = nullptr;
|
|
if (aFlags & PAINT_USE_WIDGET_LAYERS) {
|
|
layerManager = aBuilder->GetWidgetLayerManager(&view, &allowRetaining);
|
|
if (layerManager) {
|
|
doBeginTransaction = !(aFlags & PAINT_EXISTING_TRANSACTION);
|
|
widgetTransaction = true;
|
|
}
|
|
}
|
|
if (!layerManager) {
|
|
if (!aCtx) {
|
|
NS_WARNING("Nowhere to paint into");
|
|
return nullptr;
|
|
}
|
|
layerManager = new BasicLayerManager(BasicLayerManager::BLM_OFFSCREEN);
|
|
}
|
|
|
|
// Store the existing layer builder to reinstate it on return.
|
|
FrameLayerBuilder *oldBuilder = layerManager->GetLayerBuilder();
|
|
|
|
FrameLayerBuilder *layerBuilder = new FrameLayerBuilder();
|
|
layerBuilder->Init(aBuilder, layerManager);
|
|
|
|
if (aFlags & PAINT_COMPRESSED) {
|
|
layerBuilder->SetLayerTreeCompressionMode();
|
|
}
|
|
|
|
if (doBeginTransaction) {
|
|
if (aCtx) {
|
|
layerManager->BeginTransactionWithTarget(aCtx->ThebesContext());
|
|
} else {
|
|
layerManager->BeginTransaction();
|
|
}
|
|
}
|
|
if (widgetTransaction) {
|
|
layerBuilder->DidBeginRetainedLayerTransaction(layerManager);
|
|
}
|
|
|
|
nsIFrame* frame = aBuilder->RootReferenceFrame();
|
|
nsPresContext* presContext = frame->PresContext();
|
|
nsIPresShell* presShell = presContext->GetPresShell();
|
|
nsRootPresContext* rootPresContext = presContext->GetRootPresContext();
|
|
|
|
NotifySubDocInvalidationFunc computeInvalidFunc =
|
|
presContext->MayHavePaintEventListenerInSubDocument() ? nsPresContext::NotifySubDocInvalidation : 0;
|
|
bool computeInvalidRect = (computeInvalidFunc ||
|
|
(!layerManager->IsCompositingCheap() && layerManager->NeedsWidgetInvalidation())) &&
|
|
widgetTransaction;
|
|
|
|
UniquePtr<LayerProperties> props;
|
|
if (computeInvalidRect) {
|
|
props = Move(LayerProperties::CloneFrom(layerManager->GetRoot()));
|
|
}
|
|
|
|
// Clear any FrameMetrics that may have been set on the root layer on a
|
|
// previous paint. This paint will set new metrics if necessary, and if we
|
|
// don't clear the old one here, we may be left with extra metrics.
|
|
if (Layer* root = layerManager->GetRoot()) {
|
|
root->SetFrameMetrics(nsTArray<FrameMetrics>());
|
|
}
|
|
|
|
ContainerLayerParameters containerParameters
|
|
(presShell->GetResolution(), presShell->GetResolution());
|
|
RefPtr<ContainerLayer> root = layerBuilder->
|
|
BuildContainerLayerFor(aBuilder, layerManager, frame, nullptr, this,
|
|
containerParameters, nullptr);
|
|
|
|
nsIDocument* document = nullptr;
|
|
if (presShell) {
|
|
document = presShell->GetDocument();
|
|
}
|
|
|
|
if (!root) {
|
|
layerManager->SetUserData(&gLayerManagerLayerBuilder, oldBuilder);
|
|
return nullptr;
|
|
}
|
|
// Root is being scaled up by the X/Y resolution. Scale it back down.
|
|
root->SetPostScale(1.0f/containerParameters.mXScale,
|
|
1.0f/containerParameters.mYScale);
|
|
root->SetScaleToResolution(presShell->ScaleToResolution(),
|
|
containerParameters.mXScale);
|
|
if (aBuilder->IsBuildingLayerEventRegions() &&
|
|
nsLayoutUtils::HasDocumentLevelListenersForApzAwareEvents(presShell)) {
|
|
root->SetEventRegionsOverride(EventRegionsOverride::ForceDispatchToContent);
|
|
} else {
|
|
root->SetEventRegionsOverride(EventRegionsOverride::NoOverride);
|
|
}
|
|
|
|
// If we're using containerless scrolling, there is still one case where we
|
|
// want the root container layer to have metrics. If the parent process is
|
|
// using XUL windows, there is no root scrollframe, and without explicitly
|
|
// creating metrics there will be no guaranteed top-level APZC.
|
|
bool addMetrics = gfxPrefs::LayoutUseContainersForRootFrames() ||
|
|
(XRE_IsParentProcess() && !presShell->GetRootScrollFrame());
|
|
|
|
// Add metrics if there are none in the layer tree with the id (create an id
|
|
// if there isn't one already) of the root scroll frame/root content.
|
|
bool ensureMetricsForRootId =
|
|
nsLayoutUtils::AsyncPanZoomEnabled(frame) &&
|
|
!gfxPrefs::LayoutUseContainersForRootFrames() &&
|
|
aBuilder->IsPaintingToWindow() &&
|
|
!presContext->GetParentPresContext();
|
|
|
|
nsIContent* content = nullptr;
|
|
nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
|
|
if (rootScrollFrame) {
|
|
content = rootScrollFrame->GetContent();
|
|
} else {
|
|
// If there is no root scroll frame, pick the document element instead.
|
|
// The only case we don't want to do this is in non-APZ fennec, where
|
|
// we want the root xul document to get a null scroll id so that the root
|
|
// content document gets the first non-null scroll id.
|
|
#if !defined(MOZ_WIDGET_ANDROID) || defined(MOZ_ANDROID_APZ)
|
|
content = document->GetDocumentElement();
|
|
#endif
|
|
}
|
|
|
|
|
|
if (ensureMetricsForRootId && content) {
|
|
ViewID scrollId = nsLayoutUtils::FindOrCreateIDFor(content);
|
|
if (nsLayoutUtils::ContainsMetricsWithId(root, scrollId)) {
|
|
ensureMetricsForRootId = false;
|
|
}
|
|
}
|
|
|
|
if (addMetrics || ensureMetricsForRootId) {
|
|
bool isRootContent = presContext->IsRootContentDocument();
|
|
|
|
nsRect viewport(aBuilder->ToReferenceFrame(frame), frame->GetSize());
|
|
|
|
root->SetFrameMetrics(
|
|
nsLayoutUtils::ComputeFrameMetrics(frame,
|
|
rootScrollFrame, content,
|
|
aBuilder->FindReferenceFrameFor(frame),
|
|
root, FrameMetrics::NULL_SCROLL_ID, viewport, Nothing(),
|
|
isRootContent, containerParameters));
|
|
}
|
|
|
|
// NS_WARNING is debug-only, so don't even bother checking the conditions in
|
|
// a release build.
|
|
#ifdef DEBUG
|
|
bool usingDisplayport = false;
|
|
if (nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame()) {
|
|
nsIContent* content = rootScrollFrame->GetContent();
|
|
if (content) {
|
|
usingDisplayport = nsLayoutUtils::GetDisplayPort(content, nullptr);
|
|
}
|
|
}
|
|
if (usingDisplayport &&
|
|
!(root->GetContentFlags() & Layer::CONTENT_OPAQUE) &&
|
|
SpammyLayoutWarningsEnabled()) {
|
|
// See bug 693938, attachment 567017
|
|
NS_WARNING("Transparent content with displayports can be expensive.");
|
|
}
|
|
#endif
|
|
|
|
layerManager->SetRoot(root);
|
|
layerBuilder->WillEndTransaction();
|
|
|
|
if (widgetTransaction ||
|
|
// SVG-as-an-image docs don't paint as part of the retained layer tree,
|
|
// but they still need the invalidation state bits cleared in order for
|
|
// invalidation for CSS/SMIL animation to work properly.
|
|
(document && document->IsBeingUsedAsImage())) {
|
|
frame->ClearInvalidationStateBits();
|
|
}
|
|
|
|
bool temp = aBuilder->SetIsCompositingCheap(layerManager->IsCompositingCheap());
|
|
LayerManager::EndTransactionFlags flags = LayerManager::END_DEFAULT;
|
|
if (layerManager->NeedsWidgetInvalidation()) {
|
|
if (aFlags & PAINT_NO_COMPOSITE) {
|
|
flags = LayerManager::END_NO_COMPOSITE;
|
|
}
|
|
} else {
|
|
// Client layer managers never composite directly, so
|
|
// we don't need to worry about END_NO_COMPOSITE.
|
|
if (aBuilder->WillComputePluginGeometry()) {
|
|
flags = LayerManager::END_NO_REMOTE_COMPOSITE;
|
|
}
|
|
}
|
|
|
|
// If this is the content process, we ship plugin geometry updates over with layer
|
|
// updates, so calculate that now before we call EndTransaction.
|
|
if (rootPresContext &&
|
|
aBuilder->WillComputePluginGeometry() &&
|
|
XRE_IsContentProcess()) {
|
|
rootPresContext->ComputePluginGeometryUpdates(aBuilder->RootReferenceFrame(), aBuilder, this);
|
|
rootPresContext->CollectPluginGeometryUpdates(layerManager);
|
|
}
|
|
|
|
MaybeSetupTransactionIdAllocator(layerManager, view);
|
|
|
|
layerManager->EndTransaction(FrameLayerBuilder::DrawPaintedLayer,
|
|
aBuilder, flags);
|
|
aBuilder->SetIsCompositingCheap(temp);
|
|
layerBuilder->DidEndTransaction();
|
|
|
|
if (document && widgetTransaction) {
|
|
TriggerPendingAnimations(document, layerManager->GetAnimationReadyTime());
|
|
}
|
|
|
|
nsIntRegion invalid;
|
|
if (props) {
|
|
invalid = props->ComputeDifferences(root, computeInvalidFunc);
|
|
} else if (widgetTransaction) {
|
|
LayerProperties::ClearInvalidations(root);
|
|
}
|
|
|
|
bool shouldInvalidate = layerManager->NeedsWidgetInvalidation();
|
|
if (view) {
|
|
if (props) {
|
|
if (!invalid.IsEmpty()) {
|
|
nsIntRect bounds = invalid.GetBounds();
|
|
nsRect rect(presContext->DevPixelsToAppUnits(bounds.x),
|
|
presContext->DevPixelsToAppUnits(bounds.y),
|
|
presContext->DevPixelsToAppUnits(bounds.width),
|
|
presContext->DevPixelsToAppUnits(bounds.height));
|
|
if (shouldInvalidate) {
|
|
view->GetViewManager()->InvalidateViewNoSuppression(view, rect);
|
|
}
|
|
presContext->NotifyInvalidation(bounds, 0);
|
|
}
|
|
} else if (shouldInvalidate) {
|
|
view->GetViewManager()->InvalidateView(view);
|
|
}
|
|
}
|
|
|
|
layerManager->SetUserData(&gLayerManagerLayerBuilder, oldBuilder);
|
|
return layerManager.forget();
|
|
}
|
|
|
|
uint32_t nsDisplayList::Count() const {
|
|
uint32_t count = 0;
|
|
for (nsDisplayItem* i = GetBottom(); i; i = i->GetAbove()) {
|
|
++count;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
nsDisplayItem* nsDisplayList::RemoveBottom() {
|
|
nsDisplayItem* item = mSentinel.mAbove;
|
|
if (!item)
|
|
return nullptr;
|
|
mSentinel.mAbove = item->mAbove;
|
|
if (item == mTop) {
|
|
// must have been the only item
|
|
mTop = &mSentinel;
|
|
}
|
|
item->mAbove = nullptr;
|
|
return item;
|
|
}
|
|
|
|
void nsDisplayList::DeleteAll() {
|
|
nsDisplayItem* item;
|
|
while ((item = RemoveBottom()) != nullptr) {
|
|
item->~nsDisplayItem();
|
|
}
|
|
}
|
|
|
|
static bool
|
|
GetMouseThrough(const nsIFrame* aFrame)
|
|
{
|
|
if (!aFrame->IsBoxFrame())
|
|
return false;
|
|
|
|
const nsIFrame* frame = aFrame;
|
|
while (frame) {
|
|
if (frame->GetStateBits() & NS_FRAME_MOUSE_THROUGH_ALWAYS) {
|
|
return true;
|
|
} else if (frame->GetStateBits() & NS_FRAME_MOUSE_THROUGH_NEVER) {
|
|
return false;
|
|
}
|
|
frame = nsBox::GetParentBox(frame);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool
|
|
IsFrameReceivingPointerEvents(nsIFrame* aFrame)
|
|
{
|
|
nsSubDocumentFrame* frame = do_QueryFrame(aFrame);
|
|
if (frame && frame->PassPointerEventsToChildren()) {
|
|
return true;
|
|
}
|
|
return NS_STYLE_POINTER_EVENTS_NONE !=
|
|
aFrame->StyleVisibility()->GetEffectivePointerEvents(aFrame);
|
|
}
|
|
|
|
// A list of frames, and their z depth. Used for sorting
|
|
// the results of hit testing.
|
|
struct FramesWithDepth
|
|
{
|
|
explicit FramesWithDepth(float aDepth) :
|
|
mDepth(aDepth)
|
|
{}
|
|
|
|
bool operator<(const FramesWithDepth& aOther) const {
|
|
if (mDepth != aOther.mDepth) {
|
|
// We want to sort so that the shallowest item (highest depth value) is first
|
|
return mDepth > aOther.mDepth;
|
|
}
|
|
return this < &aOther;
|
|
}
|
|
bool operator==(const FramesWithDepth& aOther) const {
|
|
return this == &aOther;
|
|
}
|
|
|
|
float mDepth;
|
|
nsTArray<nsIFrame*> mFrames;
|
|
};
|
|
|
|
// Sort the frames by depth and then moves all the contained frames to the destination
|
|
void FlushFramesArray(nsTArray<FramesWithDepth>& aSource, nsTArray<nsIFrame*>* aDest)
|
|
{
|
|
if (aSource.IsEmpty()) {
|
|
return;
|
|
}
|
|
aSource.Sort();
|
|
uint32_t length = aSource.Length();
|
|
for (uint32_t i = 0; i < length; i++) {
|
|
aDest->AppendElements(Move(aSource[i].mFrames));
|
|
}
|
|
aSource.Clear();
|
|
}
|
|
|
|
void nsDisplayList::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
|
|
nsDisplayItem::HitTestState* aState,
|
|
nsTArray<nsIFrame*> *aOutFrames) const {
|
|
int32_t itemBufferStart = aState->mItemBuffer.Length();
|
|
nsDisplayItem* item;
|
|
for (item = GetBottom(); item; item = item->GetAbove()) {
|
|
aState->mItemBuffer.AppendElement(item);
|
|
}
|
|
nsAutoTArray<FramesWithDepth, 16> temp;
|
|
for (int32_t i = aState->mItemBuffer.Length() - 1; i >= itemBufferStart; --i) {
|
|
// Pop element off the end of the buffer. We want to shorten the buffer
|
|
// so that recursive calls to HitTest have more buffer space.
|
|
item = aState->mItemBuffer[i];
|
|
aState->mItemBuffer.SetLength(i);
|
|
|
|
bool snap;
|
|
nsRect r = item->GetBounds(aBuilder, &snap).Intersect(aRect);
|
|
bool alwaysIntersect =
|
|
item->Frame()->Combines3DTransformWithAncestors() &&
|
|
item->GetType() == nsDisplayItem::TYPE_TRANSFORM;
|
|
if (alwaysIntersect || item->GetClip().MayIntersect(r)) {
|
|
nsAutoTArray<nsIFrame*, 16> outFrames;
|
|
item->HitTest(aBuilder, aRect, aState, &outFrames);
|
|
|
|
// For 3d transforms with preserve-3d we add hit frames into the temp list
|
|
// so we can sort them later, otherwise we add them directly to the output list.
|
|
nsTArray<nsIFrame*> *writeFrames = aOutFrames;
|
|
if (item->GetType() == nsDisplayItem::TYPE_TRANSFORM &&
|
|
item->Frame()->Combines3DTransformWithAncestors()) {
|
|
if (outFrames.Length()) {
|
|
nsDisplayTransform *transform = static_cast<nsDisplayTransform*>(item);
|
|
nsPoint point = aRect.TopLeft();
|
|
// A 1x1 rect means a point, otherwise use the center of the rect
|
|
if (aRect.width != 1 || aRect.height != 1) {
|
|
point = aRect.Center();
|
|
}
|
|
temp.AppendElement(FramesWithDepth(transform->GetHitDepthAtPoint(aBuilder, point)));
|
|
writeFrames = &temp[temp.Length() - 1].mFrames;
|
|
}
|
|
} else {
|
|
// We may have just finished a run of consecutive preserve-3d transforms,
|
|
// so flush these into the destination array before processing our frame list.
|
|
FlushFramesArray(temp, aOutFrames);
|
|
}
|
|
|
|
for (uint32_t j = 0; j < outFrames.Length(); j++) {
|
|
nsIFrame *f = outFrames.ElementAt(j);
|
|
// Handle the XUL 'mousethrough' feature and 'pointer-events'.
|
|
if (!GetMouseThrough(f) && IsFrameReceivingPointerEvents(f)) {
|
|
writeFrames->AppendElement(f);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Clear any remaining preserve-3d transforms.
|
|
FlushFramesArray(temp, aOutFrames);
|
|
NS_ASSERTION(aState->mItemBuffer.Length() == uint32_t(itemBufferStart),
|
|
"How did we forget to pop some elements?");
|
|
}
|
|
|
|
static void Sort(nsDisplayList* aList, int32_t aCount, nsDisplayList::SortLEQ aCmp,
|
|
void* aClosure) {
|
|
if (aCount < 2)
|
|
return;
|
|
|
|
nsDisplayList list1;
|
|
nsDisplayList list2;
|
|
int i;
|
|
int32_t half = aCount/2;
|
|
bool sorted = true;
|
|
nsDisplayItem* prev = nullptr;
|
|
for (i = 0; i < aCount; ++i) {
|
|
nsDisplayItem* item = aList->RemoveBottom();
|
|
(i < half ? &list1 : &list2)->AppendToTop(item);
|
|
if (sorted && prev && !aCmp(prev, item, aClosure)) {
|
|
sorted = false;
|
|
}
|
|
prev = item;
|
|
}
|
|
if (sorted) {
|
|
aList->AppendToTop(&list1);
|
|
aList->AppendToTop(&list2);
|
|
return;
|
|
}
|
|
|
|
Sort(&list1, half, aCmp, aClosure);
|
|
Sort(&list2, aCount - half, aCmp, aClosure);
|
|
|
|
for (i = 0; i < aCount; ++i) {
|
|
if (list1.GetBottom() &&
|
|
(!list2.GetBottom() ||
|
|
aCmp(list1.GetBottom(), list2.GetBottom(), aClosure))) {
|
|
aList->AppendToTop(list1.RemoveBottom());
|
|
} else {
|
|
aList->AppendToTop(list2.RemoveBottom());
|
|
}
|
|
}
|
|
}
|
|
|
|
static nsIContent* FindContentInDocument(nsDisplayItem* aItem, nsIDocument* aDoc) {
|
|
nsIFrame* f = aItem->Frame();
|
|
while (f) {
|
|
nsPresContext* pc = f->PresContext();
|
|
if (pc->Document() == aDoc) {
|
|
return f->GetContent();
|
|
}
|
|
f = nsLayoutUtils::GetCrossDocParentFrame(pc->PresShell()->GetRootFrame());
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static bool IsContentLEQ(nsDisplayItem* aItem1, nsDisplayItem* aItem2,
|
|
void* aClosure) {
|
|
nsIContent* commonAncestor = static_cast<nsIContent*>(aClosure);
|
|
// It's possible that the nsIContent for aItem1 or aItem2 is in a subdocument
|
|
// of commonAncestor, because display items for subdocuments have been
|
|
// mixed into the same list. Ensure that we're looking at content
|
|
// in commonAncestor's document.
|
|
nsIDocument* commonAncestorDoc = commonAncestor->OwnerDoc();
|
|
nsIContent* content1 = FindContentInDocument(aItem1, commonAncestorDoc);
|
|
nsIContent* content2 = FindContentInDocument(aItem2, commonAncestorDoc);
|
|
if (!content1 || !content2) {
|
|
NS_ERROR("Document trees are mixed up!");
|
|
// Something weird going on
|
|
return true;
|
|
}
|
|
return nsLayoutUtils::CompareTreePosition(content1, content2, commonAncestor) <= 0;
|
|
}
|
|
|
|
static bool IsCSSOrderLEQ(nsDisplayItem* aItem1, nsDisplayItem* aItem2, void*) {
|
|
nsIFrame* frame1 = aItem1->Frame();
|
|
nsIFrame* frame2 = aItem2->Frame();
|
|
int32_t order1 = frame1 ? frame1->StylePosition()->mOrder : 0;
|
|
int32_t order2 = frame2 ? frame2->StylePosition()->mOrder : 0;
|
|
return order1 <= order2;
|
|
}
|
|
|
|
static bool IsZOrderLEQ(nsDisplayItem* aItem1, nsDisplayItem* aItem2,
|
|
void* aClosure) {
|
|
// Note that we can't just take the difference of the two
|
|
// z-indices here, because that might overflow a 32-bit int.
|
|
return aItem1->ZIndex() <= aItem2->ZIndex();
|
|
}
|
|
|
|
void nsDisplayList::SortByZOrder(nsDisplayListBuilder* aBuilder) {
|
|
Sort(aBuilder, IsZOrderLEQ, nullptr);
|
|
}
|
|
|
|
void nsDisplayList::SortByContentOrder(nsDisplayListBuilder* aBuilder,
|
|
nsIContent* aCommonAncestor) {
|
|
Sort(aBuilder, IsContentLEQ, aCommonAncestor);
|
|
}
|
|
|
|
void nsDisplayList::SortByCSSOrder(nsDisplayListBuilder* aBuilder) {
|
|
Sort(aBuilder, IsCSSOrderLEQ, nullptr);
|
|
}
|
|
|
|
void nsDisplayList::Sort(nsDisplayListBuilder* aBuilder,
|
|
SortLEQ aCmp, void* aClosure) {
|
|
::Sort(this, Count(), aCmp, aClosure);
|
|
}
|
|
|
|
nsDisplayItem::nsDisplayItem(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
|
|
: mFrame(aFrame)
|
|
, mClip(aBuilder->ClipState().GetCurrentCombinedClip(aBuilder))
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
, mPainted(false)
|
|
#endif
|
|
{
|
|
mReferenceFrame = aBuilder->FindReferenceFrameFor(aFrame, &mToReferenceFrame);
|
|
NS_ASSERTION(aBuilder->GetDirtyRect().width >= 0 ||
|
|
!aBuilder->IsForPainting(), "dirty rect not set");
|
|
// The dirty rect is for mCurrentFrame, so we have to use
|
|
// mCurrentOffsetToReferenceFrame
|
|
mVisibleRect = aBuilder->GetDirtyRect() +
|
|
aBuilder->GetCurrentFrameOffsetToReferenceFrame();
|
|
}
|
|
|
|
/* static */ bool
|
|
nsDisplayItem::ForceActiveLayers()
|
|
{
|
|
static bool sForce = false;
|
|
static bool sForceCached = false;
|
|
|
|
if (!sForceCached) {
|
|
Preferences::AddBoolVarCache(&sForce, "layers.force-active", false);
|
|
sForceCached = true;
|
|
}
|
|
|
|
return sForce;
|
|
}
|
|
|
|
/* static */ int32_t
|
|
nsDisplayItem::MaxActiveLayers()
|
|
{
|
|
static int32_t sMaxLayers = false;
|
|
static bool sMaxLayersCached = false;
|
|
|
|
if (!sMaxLayersCached) {
|
|
Preferences::AddIntVarCache(&sMaxLayers, "layers.max-active", -1);
|
|
sMaxLayersCached = true;
|
|
}
|
|
|
|
return sMaxLayers;
|
|
}
|
|
|
|
int32_t
|
|
nsDisplayItem::ZIndex() const
|
|
{
|
|
if (!mFrame->IsAbsPosContaininingBlock() && !mFrame->IsFlexOrGridItem())
|
|
return 0;
|
|
|
|
const nsStylePosition* position = mFrame->StylePosition();
|
|
if (position->mZIndex.GetUnit() == eStyleUnit_Integer)
|
|
return position->mZIndex.GetIntValue();
|
|
|
|
// sort the auto and 0 elements together
|
|
return 0;
|
|
}
|
|
|
|
bool
|
|
nsDisplayItem::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion)
|
|
{
|
|
return !mVisibleRect.IsEmpty() &&
|
|
!IsInvisibleInRect(aVisibleRegion->GetBounds());
|
|
}
|
|
|
|
bool
|
|
nsDisplayItem::RecomputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
nsRect bounds = GetClippedBounds(aBuilder);
|
|
|
|
nsRegion itemVisible;
|
|
itemVisible.And(*aVisibleRegion, bounds);
|
|
mVisibleRect = itemVisible.GetBounds();
|
|
|
|
// When we recompute visibility within layers we don't need to
|
|
// expand the visible region for content behind plugins (the plugin
|
|
// is not in the layer).
|
|
if (!ComputeVisibility(aBuilder, aVisibleRegion)) {
|
|
mVisibleRect = nsRect();
|
|
return false;
|
|
}
|
|
|
|
nsRegion opaque = TreatAsOpaque(this, aBuilder);
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, opaque);
|
|
return true;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayItem::GetClippedBounds(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
bool snap;
|
|
nsRect r = GetBounds(aBuilder, &snap);
|
|
return GetClip().ApplyNonRoundedIntersection(r);
|
|
}
|
|
|
|
nsRect
|
|
nsDisplaySolidColor::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
void
|
|
nsDisplaySolidColor::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
DrawTarget* drawTarget = aCtx->GetDrawTarget();
|
|
Rect rect =
|
|
NSRectToSnappedRect(mVisibleRect, appUnitsPerDevPixel, *drawTarget);
|
|
drawTarget->FillRect(rect, ColorPattern(ToDeviceColor(mColor)));
|
|
}
|
|
|
|
void
|
|
nsDisplaySolidColor::WriteDebugInfo(std::stringstream& aStream)
|
|
{
|
|
aStream << " (rgba "
|
|
<< (int)NS_GET_R(mColor) << ","
|
|
<< (int)NS_GET_G(mColor) << ","
|
|
<< (int)NS_GET_B(mColor) << ","
|
|
<< (int)NS_GET_A(mColor) << ")";
|
|
}
|
|
|
|
static void
|
|
RegisterThemeGeometry(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsITheme::ThemeGeometryType aType)
|
|
{
|
|
if (aBuilder->IsInRootChromeDocumentOrPopup() && !aBuilder->IsInTransform()) {
|
|
nsIFrame* displayRoot = nsLayoutUtils::GetDisplayRootFrame(aFrame);
|
|
nsRect borderBox(aFrame->GetOffsetTo(displayRoot), aFrame->GetSize());
|
|
aBuilder->RegisterThemeGeometry(aType,
|
|
borderBox.ToNearestPixels(aFrame->PresContext()->AppUnitsPerDevPixel()));
|
|
}
|
|
}
|
|
|
|
nsDisplayBackgroundImage::nsDisplayBackgroundImage(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
uint32_t aLayer,
|
|
const nsStyleBackground* aBackgroundStyle)
|
|
: nsDisplayImageContainer(aBuilder, aFrame)
|
|
, mBackgroundStyle(aBackgroundStyle)
|
|
, mLayer(aLayer)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayBackgroundImage);
|
|
|
|
mBounds = GetBoundsInternal(aBuilder);
|
|
mDestArea = GetDestAreaInternal(aBuilder);
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBackgroundImage::GetDestAreaInternal(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (!mBackgroundStyle) {
|
|
return nsRect();
|
|
}
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
nsRect borderArea = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
const nsStyleBackground::Layer &layer = mBackgroundStyle->mLayers[mLayer];
|
|
|
|
nsBackgroundLayerState state =
|
|
nsCSSRendering::PrepareBackgroundLayer(presContext, mFrame, flags,
|
|
borderArea, borderArea, layer);
|
|
return state.mDestArea;
|
|
}
|
|
|
|
nsDisplayBackgroundImage::~nsDisplayBackgroundImage()
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_DTOR(nsDisplayBackgroundImage);
|
|
#endif
|
|
}
|
|
|
|
static nsStyleContext* GetBackgroundStyleContext(nsIFrame* aFrame)
|
|
{
|
|
nsStyleContext *sc;
|
|
if (!nsCSSRendering::FindBackground(aFrame, &sc)) {
|
|
// We don't want to bail out if moz-appearance is set on a root
|
|
// node. If it has a parent content node, bail because it's not
|
|
// a root, other wise keep going in order to let the theme stuff
|
|
// draw the background. The canvas really should be drawing the
|
|
// bg, but there's no way to hook that up via css.
|
|
if (!aFrame->StyleDisplay()->mAppearance) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent* content = aFrame->GetContent();
|
|
if (!content || content->GetParent()) {
|
|
return nullptr;
|
|
}
|
|
|
|
sc = aFrame->StyleContext();
|
|
}
|
|
return sc;
|
|
}
|
|
|
|
/* static */ void
|
|
SetBackgroundClipRegion(DisplayListClipState::AutoSaveRestore& aClipState,
|
|
nsIFrame* aFrame, const nsPoint& aToReferenceFrame,
|
|
const nsStyleBackground::Layer& aLayer,
|
|
bool aWillPaintBorder)
|
|
{
|
|
nsRect borderBox = nsRect(aToReferenceFrame, aFrame->GetSize());
|
|
|
|
nsCSSRendering::BackgroundClipState clip;
|
|
nsCSSRendering::GetBackgroundClip(aLayer, aFrame, *aFrame->StyleBorder(),
|
|
borderBox, borderBox, aWillPaintBorder,
|
|
aFrame->PresContext()->AppUnitsPerDevPixel(),
|
|
&clip);
|
|
|
|
if (clip.mHasAdditionalBGClipArea) {
|
|
aClipState.ClipContentDescendants(clip.mAdditionalBGClipArea, clip.mBGClipArea,
|
|
clip.mHasRoundedCorners ? clip.mRadii : nullptr);
|
|
} else {
|
|
aClipState.ClipContentDescendants(clip.mBGClipArea, clip.mHasRoundedCorners ? clip.mRadii : nullptr);
|
|
}
|
|
}
|
|
|
|
|
|
/*static*/ bool
|
|
nsDisplayBackgroundImage::AppendBackgroundItemsToTop(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsDisplayList* aList)
|
|
{
|
|
nsStyleContext* bgSC = nullptr;
|
|
const nsStyleBackground* bg = nullptr;
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
bool isThemed = aFrame->IsThemed();
|
|
if (!isThemed) {
|
|
bgSC = GetBackgroundStyleContext(aFrame);
|
|
if (bgSC) {
|
|
bg = bgSC->StyleBackground();
|
|
}
|
|
}
|
|
|
|
bool drawBackgroundColor = false;
|
|
// Dummy initialisation to keep Valgrind/Memcheck happy.
|
|
// See bug 1122375 comment 1.
|
|
nscolor color = NS_RGBA(0,0,0,0);
|
|
if (!nsCSSRendering::IsCanvasFrame(aFrame) && bg) {
|
|
bool drawBackgroundImage;
|
|
color =
|
|
nsCSSRendering::DetermineBackgroundColor(presContext, bgSC, aFrame,
|
|
drawBackgroundImage, drawBackgroundColor);
|
|
}
|
|
|
|
const nsStyleBorder* borderStyle = aFrame->StyleBorder();
|
|
bool hasInsetShadow = borderStyle->mBoxShadow &&
|
|
borderStyle->mBoxShadow->HasShadowWithInset(true);
|
|
bool willPaintBorder = !isThemed && !hasInsetShadow &&
|
|
borderStyle->HasBorder();
|
|
|
|
nsPoint toRef = aBuilder->ToReferenceFrame(aFrame);
|
|
|
|
// An auxiliary list is necessary in case we have background blending; if that
|
|
// is the case, background items need to be wrapped by a blend container to
|
|
// isolate blending to the background
|
|
nsDisplayList bgItemList;
|
|
// Even if we don't actually have a background color to paint, we may still need
|
|
// to create an item for hit testing.
|
|
if ((drawBackgroundColor && color != NS_RGBA(0,0,0,0)) ||
|
|
aBuilder->IsForEventDelivery()) {
|
|
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
|
|
if (bg && !aBuilder->IsForEventDelivery()) {
|
|
// Disable the will-paint-border optimization for background
|
|
// colors with no border-radius. Enabling it for background colors
|
|
// doesn't help much (there are no tiling issues) and clipping the
|
|
// background breaks detection of the element's border-box being
|
|
// opaque. For nonzero border-radius we still need it because we
|
|
// want to inset the background if possible to avoid antialiasing
|
|
// artifacts along the rounded corners.
|
|
bool useWillPaintBorderOptimization = willPaintBorder &&
|
|
nsLayoutUtils::HasNonZeroCorner(borderStyle->mBorderRadius);
|
|
SetBackgroundClipRegion(clipState, aFrame, toRef,
|
|
bg->BottomLayer(),
|
|
useWillPaintBorderOptimization);
|
|
}
|
|
bgItemList.AppendNewToTop(
|
|
new (aBuilder) nsDisplayBackgroundColor(aBuilder, aFrame, bg,
|
|
drawBackgroundColor ? color : NS_RGBA(0, 0, 0, 0)));
|
|
}
|
|
|
|
if (isThemed) {
|
|
nsITheme* theme = presContext->GetTheme();
|
|
if (theme->NeedToClearBackgroundBehindWidget(aFrame, aFrame->StyleDisplay()->mAppearance) &&
|
|
aBuilder->IsInRootChromeDocumentOrPopup() && !aBuilder->IsInTransform()) {
|
|
bgItemList.AppendNewToTop(
|
|
new (aBuilder) nsDisplayClearBackground(aBuilder, aFrame));
|
|
}
|
|
nsDisplayThemedBackground* bgItem =
|
|
new (aBuilder) nsDisplayThemedBackground(aBuilder, aFrame);
|
|
bgItemList.AppendNewToTop(bgItem);
|
|
aList->AppendToTop(&bgItemList);
|
|
return true;
|
|
}
|
|
|
|
if (!bg) {
|
|
aList->AppendToTop(&bgItemList);
|
|
return false;
|
|
}
|
|
|
|
bool needBlendContainer = false;
|
|
|
|
// Passing bg == nullptr in this macro will result in one iteration with
|
|
// i = 0.
|
|
NS_FOR_VISIBLE_BACKGROUND_LAYERS_BACK_TO_FRONT(i, bg) {
|
|
if (bg->mLayers[i].mImage.IsEmpty()) {
|
|
continue;
|
|
}
|
|
|
|
if (bg->mLayers[i].mBlendMode != NS_STYLE_BLEND_NORMAL) {
|
|
needBlendContainer = true;
|
|
}
|
|
|
|
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
|
|
if (!aBuilder->IsForEventDelivery()) {
|
|
const nsStyleBackground::Layer& layer = bg->mLayers[i];
|
|
SetBackgroundClipRegion(clipState, aFrame, toRef,
|
|
layer, willPaintBorder);
|
|
}
|
|
|
|
nsDisplayBackgroundImage* bgItem =
|
|
new (aBuilder) nsDisplayBackgroundImage(aBuilder, aFrame, i, bg);
|
|
bgItemList.AppendNewToTop(bgItem);
|
|
}
|
|
|
|
if (needBlendContainer) {
|
|
bgItemList.AppendNewToTop(
|
|
new (aBuilder) nsDisplayBlendContainer(aBuilder, aFrame, &bgItemList));
|
|
}
|
|
|
|
aList->AppendToTop(&bgItemList);
|
|
return false;
|
|
}
|
|
|
|
// Check that the rounded border of aFrame, added to aToReferenceFrame,
|
|
// intersects aRect. Assumes that the unrounded border has already
|
|
// been checked for intersection.
|
|
static bool
|
|
RoundedBorderIntersectsRect(nsIFrame* aFrame,
|
|
const nsPoint& aFrameToReferenceFrame,
|
|
const nsRect& aTestRect)
|
|
{
|
|
if (!nsRect(aFrameToReferenceFrame, aFrame->GetSize()).Intersects(aTestRect))
|
|
return false;
|
|
|
|
nscoord radii[8];
|
|
return !aFrame->GetBorderRadii(radii) ||
|
|
nsLayoutUtils::RoundedRectIntersectsRect(nsRect(aFrameToReferenceFrame,
|
|
aFrame->GetSize()),
|
|
radii, aTestRect);
|
|
}
|
|
|
|
// Returns TRUE if aContainedRect is guaranteed to be contained in
|
|
// the rounded rect defined by aRoundedRect and aRadii. Complex cases are
|
|
// handled conservatively by returning FALSE in some situations where
|
|
// a more thorough analysis could return TRUE.
|
|
//
|
|
// See also RoundedRectIntersectsRect.
|
|
static bool RoundedRectContainsRect(const nsRect& aRoundedRect,
|
|
const nscoord aRadii[8],
|
|
const nsRect& aContainedRect) {
|
|
nsRegion rgn = nsLayoutUtils::RoundedRectIntersectRect(aRoundedRect, aRadii, aContainedRect);
|
|
return rgn.Contains(aContainedRect);
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundImage::IsSingleFixedPositionImage(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aClipRect,
|
|
gfxRect* aDestRect)
|
|
{
|
|
if (!mBackgroundStyle)
|
|
return false;
|
|
|
|
if (mBackgroundStyle->mLayers.Length() != 1)
|
|
return false;
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
nsRect borderArea = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
const nsStyleBackground::Layer &layer = mBackgroundStyle->mLayers[mLayer];
|
|
|
|
if (layer.mAttachment != NS_STYLE_BG_ATTACHMENT_FIXED)
|
|
return false;
|
|
|
|
nsBackgroundLayerState state =
|
|
nsCSSRendering::PrepareBackgroundLayer(presContext, mFrame, flags,
|
|
borderArea, aClipRect, layer);
|
|
nsImageRenderer* imageRenderer = &state.mImageRenderer;
|
|
// We only care about images here, not gradients.
|
|
if (!imageRenderer->IsRasterImage())
|
|
return false;
|
|
|
|
int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
|
|
*aDestRect = nsLayoutUtils::RectToGfxRect(state.mFillArea, appUnitsPerDevPixel);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundImage::IsNonEmptyFixedImage() const
|
|
{
|
|
return mBackgroundStyle->mLayers[mLayer].mAttachment == NS_STYLE_BG_ATTACHMENT_FIXED &&
|
|
!mBackgroundStyle->mLayers[mLayer].mImage.IsEmpty();
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundImage::ShouldFixToViewport(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
// APZ needs background-attachment:fixed images layerized for correctness.
|
|
RefPtr<LayerManager> layerManager = aBuilder->GetWidgetLayerManager();
|
|
if (!nsLayoutUtils::UsesAsyncScrolling(mFrame) &&
|
|
layerManager && layerManager->ShouldAvoidComponentAlphaLayers()) {
|
|
return false;
|
|
}
|
|
|
|
// Put background-attachment:fixed background images in their own
|
|
// compositing layer.
|
|
return IsNonEmptyFixedImage();
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundImage::CanOptimizeToImageLayer(LayerManager* aManager,
|
|
nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (!mBackgroundStyle) {
|
|
return false;
|
|
}
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
nsRect borderArea = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
const nsStyleBackground::Layer &layer = mBackgroundStyle->mLayers[mLayer];
|
|
|
|
nsBackgroundLayerState state =
|
|
nsCSSRendering::PrepareBackgroundLayer(presContext, mFrame, flags,
|
|
borderArea, borderArea, layer);
|
|
nsImageRenderer* imageRenderer = &state.mImageRenderer;
|
|
// We only care about images here, not gradients.
|
|
if (!imageRenderer->IsRasterImage()) {
|
|
return false;
|
|
}
|
|
|
|
if (!imageRenderer->IsContainerAvailable(aManager, aBuilder)) {
|
|
// The image is not ready to be made into a layer yet.
|
|
return false;
|
|
}
|
|
|
|
// We currently can't handle tiled or partial backgrounds.
|
|
if (!state.mDestArea.IsEqualEdges(state.mFillArea)) {
|
|
return false;
|
|
}
|
|
|
|
// XXX Ignoring state.mAnchor. ImageLayer drawing snaps mDestArea edges to
|
|
// layer pixel boundaries. This should be OK for now.
|
|
|
|
int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
|
|
mImageLayerDestRect =
|
|
LayoutDeviceRect::FromAppUnits(state.mDestArea, appUnitsPerDevPixel);
|
|
|
|
// Ok, we can turn this into a layer if needed.
|
|
mImage = imageRenderer->GetImage();
|
|
MOZ_ASSERT(mImage);
|
|
|
|
return true;
|
|
}
|
|
|
|
already_AddRefed<ImageContainer>
|
|
nsDisplayBackgroundImage::GetContainer(LayerManager* aManager,
|
|
nsDisplayListBuilder *aBuilder)
|
|
{
|
|
if (!mImage) {
|
|
MOZ_ASSERT_UNREACHABLE("Must call CanOptimizeToImage() and get true "
|
|
"before calling GetContainer()");
|
|
return nullptr;
|
|
}
|
|
|
|
if (!mImageContainer) {
|
|
// We don't have an ImageContainer yet; get it from mImage.
|
|
|
|
uint32_t flags = aBuilder->ShouldSyncDecodeImages()
|
|
? imgIContainer::FLAG_SYNC_DECODE
|
|
: imgIContainer::FLAG_NONE;
|
|
|
|
mImageContainer = mImage->GetImageContainer(aManager, flags);
|
|
}
|
|
|
|
RefPtr<ImageContainer> container = mImageContainer;
|
|
return container.forget();
|
|
}
|
|
|
|
nsDisplayBackgroundImage::ImageLayerization
|
|
nsDisplayBackgroundImage::ShouldCreateOwnLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager)
|
|
{
|
|
nsIFrame* backgroundStyleFrame = nsCSSRendering::FindBackgroundStyleFrame(mFrame);
|
|
if (ActiveLayerTracker::IsStyleAnimated(aBuilder, backgroundStyleFrame,
|
|
eCSSProperty_background_position)) {
|
|
return WHENEVER_POSSIBLE;
|
|
}
|
|
|
|
if (nsLayoutUtils::AnimatedImageLayersEnabled() && mBackgroundStyle) {
|
|
const nsStyleBackground::Layer &layer = mBackgroundStyle->mLayers[mLayer];
|
|
const nsStyleImage* image = &layer.mImage;
|
|
if (image->GetType() == eStyleImageType_Image) {
|
|
imgIRequest* imgreq = image->GetImageData();
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (NS_SUCCEEDED(imgreq->GetImage(getter_AddRefs(image))) && image) {
|
|
bool animated = false;
|
|
if (NS_SUCCEEDED(image->GetAnimated(&animated)) && animated) {
|
|
return WHENEVER_POSSIBLE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nsLayoutUtils::GPUImageScalingEnabled() &&
|
|
aManager->IsCompositingCheap()) {
|
|
return ONLY_FOR_SCALING;
|
|
}
|
|
|
|
return NO_LAYER_NEEDED;
|
|
}
|
|
|
|
LayerState
|
|
nsDisplayBackgroundImage::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
ImageLayerization shouldLayerize = ShouldCreateOwnLayer(aBuilder, aManager);
|
|
if (shouldLayerize == NO_LAYER_NEEDED) {
|
|
// We can skip the call to CanOptimizeToImageLayer if we don't want a
|
|
// layer anyway.
|
|
return LAYER_NONE;
|
|
}
|
|
|
|
if (CanOptimizeToImageLayer(aManager, aBuilder)) {
|
|
if (shouldLayerize == WHENEVER_POSSIBLE) {
|
|
return LAYER_ACTIVE;
|
|
}
|
|
|
|
MOZ_ASSERT(shouldLayerize == ONLY_FOR_SCALING, "unhandled ImageLayerization value?");
|
|
|
|
MOZ_ASSERT(mImage);
|
|
int32_t imageWidth;
|
|
int32_t imageHeight;
|
|
mImage->GetWidth(&imageWidth);
|
|
mImage->GetHeight(&imageHeight);
|
|
NS_ASSERTION(imageWidth != 0 && imageHeight != 0, "Invalid image size!");
|
|
|
|
const LayerRect destLayerRect = mImageLayerDestRect * aParameters.Scale();
|
|
|
|
// Calculate the scaling factor for the frame.
|
|
const gfxSize scale = gfxSize(destLayerRect.width / imageWidth,
|
|
destLayerRect.height / imageHeight);
|
|
|
|
if ((scale.width != 1.0f || scale.height != 1.0f) &&
|
|
(destLayerRect.width * destLayerRect.height >= 64 * 64)) {
|
|
// Separate this image into a layer.
|
|
// There's no point in doing this if we are not scaling at all or if the
|
|
// target size is pretty small.
|
|
return LAYER_ACTIVE;
|
|
}
|
|
}
|
|
|
|
return LAYER_NONE;
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayBackgroundImage::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
RefPtr<ImageLayer> layer = static_cast<ImageLayer*>
|
|
(aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, this));
|
|
if (!layer) {
|
|
layer = aManager->CreateImageLayer();
|
|
if (!layer)
|
|
return nullptr;
|
|
}
|
|
RefPtr<ImageContainer> imageContainer = GetContainer(aManager, aBuilder);
|
|
layer->SetContainer(imageContainer);
|
|
ConfigureLayer(layer, aParameters);
|
|
return layer.forget();
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundImage::ConfigureLayer(ImageLayer* aLayer,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
aLayer->SetFilter(nsLayoutUtils::GetGraphicsFilterForFrame(mFrame));
|
|
|
|
MOZ_ASSERT(mImage);
|
|
int32_t imageWidth;
|
|
int32_t imageHeight;
|
|
mImage->GetWidth(&imageWidth);
|
|
mImage->GetHeight(&imageHeight);
|
|
NS_ASSERTION(imageWidth != 0 && imageHeight != 0, "Invalid image size!");
|
|
|
|
if (imageWidth > 0 && imageHeight > 0) {
|
|
// We're actually using the ImageContainer. Let our frame know that it
|
|
// should consider itself to have painted successfully.
|
|
nsDisplayBackgroundGeometry::UpdateDrawResult(this,
|
|
image::DrawResult::SUCCESS);
|
|
}
|
|
|
|
// XXX(seth): Right now we ignore aParameters.Scale() and
|
|
// aParameters.Offset(), because FrameLayerBuilder already applies
|
|
// aParameters.Scale() via the layer's post-transform, and
|
|
// aParameters.Offset() is always zero.
|
|
MOZ_ASSERT(aParameters.Offset() == LayerIntPoint(0,0));
|
|
|
|
const LayoutDevicePoint p = mImageLayerDestRect.TopLeft();
|
|
Matrix transform = Matrix::Translation(p.x, p.y);
|
|
transform.PreScale(mImageLayerDestRect.width / imageWidth,
|
|
mImageLayerDestRect.height / imageHeight);
|
|
aLayer->SetBaseTransform(gfx::Matrix4x4::From2D(transform));
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundImage::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
if (RoundedBorderIntersectsRect(mFrame, ToReferenceFrame(), aRect)) {
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundImage::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion)
|
|
{
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion)) {
|
|
return false;
|
|
}
|
|
|
|
// Return false if the background was propagated away from this
|
|
// frame. We don't want this display item to show up and confuse
|
|
// anything.
|
|
return mBackgroundStyle;
|
|
}
|
|
|
|
/* static */ nsRegion
|
|
nsDisplayBackgroundImage::GetInsideClipRegion(nsDisplayItem* aItem,
|
|
nsPresContext* aPresContext,
|
|
uint8_t aClip, const nsRect& aRect,
|
|
bool* aSnap)
|
|
{
|
|
nsRegion result;
|
|
if (aRect.IsEmpty())
|
|
return result;
|
|
|
|
nsIFrame *frame = aItem->Frame();
|
|
|
|
nsRect clipRect;
|
|
if (frame->GetType() == nsGkAtoms::canvasFrame) {
|
|
nsCanvasFrame* canvasFrame = static_cast<nsCanvasFrame*>(frame);
|
|
clipRect = canvasFrame->CanvasArea() + aItem->ToReferenceFrame();
|
|
} else {
|
|
switch (aClip) {
|
|
case NS_STYLE_BG_CLIP_BORDER:
|
|
clipRect = nsRect(aItem->ToReferenceFrame(), frame->GetSize());
|
|
break;
|
|
case NS_STYLE_BG_CLIP_PADDING:
|
|
clipRect = frame->GetPaddingRect() - frame->GetPosition() + aItem->ToReferenceFrame();
|
|
break;
|
|
case NS_STYLE_BG_CLIP_CONTENT:
|
|
clipRect = frame->GetContentRectRelativeToSelf() + aItem->ToReferenceFrame();
|
|
break;
|
|
default:
|
|
NS_NOTREACHED("Unknown clip type");
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return clipRect.Intersect(aRect);
|
|
}
|
|
|
|
nsRegion
|
|
nsDisplayBackgroundImage::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) {
|
|
nsRegion result;
|
|
*aSnap = false;
|
|
|
|
if (!mBackgroundStyle)
|
|
return result;
|
|
|
|
|
|
*aSnap = true;
|
|
|
|
// For NS_STYLE_BOX_DECORATION_BREAK_SLICE, don't try to optimize here, since
|
|
// this could easily lead to O(N^2) behavior inside InlineBackgroundData,
|
|
// which expects frames to be sent to it in content order, not reverse
|
|
// content order which we'll produce here.
|
|
// Of course, if there's only one frame in the flow, it doesn't matter.
|
|
if (mFrame->StyleBorder()->mBoxDecorationBreak ==
|
|
NS_STYLE_BOX_DECORATION_BREAK_CLONE ||
|
|
(!mFrame->GetPrevContinuation() && !mFrame->GetNextContinuation())) {
|
|
const nsStyleBackground::Layer& layer = mBackgroundStyle->mLayers[mLayer];
|
|
if (layer.mImage.IsOpaque() && layer.mBlendMode == NS_STYLE_BLEND_NORMAL) {
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
result = GetInsideClipRegion(this, presContext, layer.mClip, mBounds, aSnap);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundImage::IsUniform(nsDisplayListBuilder* aBuilder, nscolor* aColor) {
|
|
if (!mBackgroundStyle) {
|
|
*aColor = NS_RGBA(0,0,0,0);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBackgroundImage::GetPositioningArea()
|
|
{
|
|
if (!mBackgroundStyle) {
|
|
return nsRect();
|
|
}
|
|
nsIFrame* attachedToFrame;
|
|
return nsCSSRendering::ComputeBackgroundPositioningArea(
|
|
mFrame->PresContext(), mFrame,
|
|
nsRect(ToReferenceFrame(), mFrame->GetSize()),
|
|
mBackgroundStyle->mLayers[mLayer],
|
|
&attachedToFrame) + ToReferenceFrame();
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundImage::RenderingMightDependOnPositioningAreaSizeChange()
|
|
{
|
|
if (!mBackgroundStyle)
|
|
return false;
|
|
|
|
nscoord radii[8];
|
|
if (mFrame->GetBorderRadii(radii)) {
|
|
// A change in the size of the positioning area might change the position
|
|
// of the rounded corners.
|
|
return true;
|
|
}
|
|
|
|
const nsStyleBackground::Layer &layer = mBackgroundStyle->mLayers[mLayer];
|
|
if (layer.RenderingMightDependOnPositioningAreaSizeChange()) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void CheckForBorderItem(nsDisplayItem *aItem, uint32_t& aFlags)
|
|
{
|
|
nsDisplayItem* nextItem = aItem->GetAbove();
|
|
while (nextItem && nextItem->GetType() == nsDisplayItem::TYPE_BACKGROUND) {
|
|
nextItem = nextItem->GetAbove();
|
|
}
|
|
if (nextItem &&
|
|
nextItem->Frame() == aItem->Frame() &&
|
|
nextItem->GetType() == nsDisplayItem::TYPE_BORDER) {
|
|
aFlags |= nsCSSRendering::PAINTBG_WILL_PAINT_BORDER;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundImage::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
PaintInternal(aBuilder, aCtx, mVisibleRect, &mBounds);
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundImage::PaintInternal(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx, const nsRect& aBounds,
|
|
nsRect* aClipRect) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
CheckForBorderItem(this, flags);
|
|
|
|
image::DrawResult result =
|
|
nsCSSRendering::PaintBackground(mFrame->PresContext(), *aCtx, mFrame,
|
|
aBounds,
|
|
nsRect(offset, mFrame->GetSize()),
|
|
flags, aClipRect, mLayer);
|
|
|
|
nsDisplayBackgroundGeometry::UpdateDrawResult(this, result);
|
|
}
|
|
|
|
void nsDisplayBackgroundImage::ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion)
|
|
{
|
|
if (!mBackgroundStyle) {
|
|
return;
|
|
}
|
|
|
|
const nsDisplayBackgroundGeometry* geometry = static_cast<const nsDisplayBackgroundGeometry*>(aGeometry);
|
|
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
nsRect positioningArea = GetPositioningArea();
|
|
if (positioningArea.TopLeft() != geometry->mPositioningArea.TopLeft() ||
|
|
(positioningArea.Size() != geometry->mPositioningArea.Size() &&
|
|
RenderingMightDependOnPositioningAreaSizeChange())) {
|
|
// Positioning area changed in a way that could cause everything to change,
|
|
// so invalidate everything (both old and new painting areas).
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
|
|
if (positioningArea.Size() != geometry->mPositioningArea.Size()) {
|
|
NotifyRenderingChanged();
|
|
}
|
|
return;
|
|
}
|
|
if (!mDestArea.IsEqualInterior(geometry->mDestArea)) {
|
|
// Dest area changed in a way that could cause everything to change,
|
|
// so invalidate everything (both old and new painting areas).
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
NotifyRenderingChanged();
|
|
return;
|
|
}
|
|
if (aBuilder->ShouldSyncDecodeImages()) {
|
|
const nsStyleImage& image = mBackgroundStyle->mLayers[mLayer].mImage;
|
|
if (image.GetType() == eStyleImageType_Image &&
|
|
geometry->ShouldInvalidateToSyncDecodeImages()) {
|
|
aInvalidRegion->Or(*aInvalidRegion, bounds);
|
|
|
|
NotifyRenderingChanged();
|
|
}
|
|
}
|
|
if (!bounds.IsEqualInterior(geometry->mBounds)) {
|
|
// Positioning area is unchanged, so invalidate just the change in the
|
|
// painting area.
|
|
aInvalidRegion->Xor(bounds, geometry->mBounds);
|
|
|
|
NotifyRenderingChanged();
|
|
}
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBackgroundImage::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBackgroundImage::GetBoundsInternal(nsDisplayListBuilder* aBuilder) {
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
|
|
if (!mBackgroundStyle) {
|
|
return nsRect();
|
|
}
|
|
|
|
nsRect borderBox = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
nsRect clipRect = borderBox;
|
|
if (mFrame->GetType() == nsGkAtoms::canvasFrame) {
|
|
nsCanvasFrame* frame = static_cast<nsCanvasFrame*>(mFrame);
|
|
clipRect = frame->CanvasArea() + ToReferenceFrame();
|
|
} else if (nsLayoutUtils::UsesAsyncScrolling(mFrame) && IsNonEmptyFixedImage()) {
|
|
// If this is a background-attachment:fixed image, and APZ is enabled,
|
|
// async scrolling could reveal additional areas of the image, so don't
|
|
// clip it beyond clipping to the document's viewport.
|
|
nsIFrame* rootFrame = presContext->PresShell()->GetRootFrame();
|
|
nsRect rootRect = rootFrame->GetRectRelativeToSelf();
|
|
if (nsLayoutUtils::TransformRect(rootFrame, mFrame, rootRect) == nsLayoutUtils::TRANSFORM_SUCCEEDED) {
|
|
clipRect = rootRect + aBuilder->ToReferenceFrame(mFrame);
|
|
}
|
|
}
|
|
const nsStyleBackground::Layer& layer = mBackgroundStyle->mLayers[mLayer];
|
|
return nsCSSRendering::GetBackgroundLayerRect(presContext, mFrame,
|
|
borderBox, clipRect, layer,
|
|
aBuilder->GetBackgroundPaintFlags());
|
|
}
|
|
|
|
uint32_t
|
|
nsDisplayBackgroundImage::GetPerFrameKey()
|
|
{
|
|
return (mLayer << nsDisplayItem::TYPE_BITS) |
|
|
nsDisplayItem::GetPerFrameKey();
|
|
}
|
|
|
|
nsDisplayThemedBackground::nsDisplayThemedBackground(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayThemedBackground);
|
|
|
|
const nsStyleDisplay* disp = mFrame->StyleDisplay();
|
|
mAppearance = disp->mAppearance;
|
|
mFrame->IsThemed(disp, &mThemeTransparency);
|
|
|
|
// Perform necessary RegisterThemeGeometry
|
|
nsITheme* theme = mFrame->PresContext()->GetTheme();
|
|
nsITheme::ThemeGeometryType type =
|
|
theme->ThemeGeometryTypeForWidget(mFrame, disp->mAppearance);
|
|
if (type != nsITheme::eThemeGeometryTypeUnknown) {
|
|
RegisterThemeGeometry(aBuilder, aFrame, type);
|
|
}
|
|
|
|
if (disp->mAppearance == NS_THEME_WIN_BORDERLESS_GLASS ||
|
|
disp->mAppearance == NS_THEME_WIN_GLASS) {
|
|
aBuilder->SetGlassDisplayItem(this);
|
|
}
|
|
|
|
mBounds = GetBoundsInternal();
|
|
}
|
|
|
|
nsDisplayThemedBackground::~nsDisplayThemedBackground()
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_DTOR(nsDisplayThemedBackground);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
nsDisplayThemedBackground::WriteDebugInfo(std::stringstream& aStream)
|
|
{
|
|
aStream << " (themed, appearance:" << (int)mAppearance << ")";
|
|
}
|
|
|
|
void
|
|
nsDisplayThemedBackground::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
// Assume that any point in our border rect is a hit.
|
|
if (nsRect(ToReferenceFrame(), mFrame->GetSize()).Intersects(aRect)) {
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
}
|
|
|
|
nsRegion
|
|
nsDisplayThemedBackground::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) {
|
|
nsRegion result;
|
|
*aSnap = false;
|
|
|
|
if (mThemeTransparency == nsITheme::eOpaque) {
|
|
result = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsDisplayThemedBackground::IsUniform(nsDisplayListBuilder* aBuilder, nscolor* aColor) {
|
|
if (mAppearance == NS_THEME_WIN_BORDERLESS_GLASS ||
|
|
mAppearance == NS_THEME_WIN_GLASS) {
|
|
*aColor = NS_RGBA(0,0,0,0);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayThemedBackground::ProvidesFontSmoothingBackgroundColor(nsDisplayListBuilder* aBuilder,
|
|
nscolor* aColor)
|
|
{
|
|
nsITheme* theme = mFrame->PresContext()->GetTheme();
|
|
return theme->WidgetProvidesFontSmoothingBackgroundColor(mFrame, mAppearance, aColor);
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayThemedBackground::GetPositioningArea()
|
|
{
|
|
return nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
}
|
|
|
|
void
|
|
nsDisplayThemedBackground::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
PaintInternal(aBuilder, aCtx, mVisibleRect, nullptr);
|
|
}
|
|
|
|
|
|
void
|
|
nsDisplayThemedBackground::PaintInternal(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx, const nsRect& aBounds,
|
|
nsRect* aClipRect)
|
|
{
|
|
// XXXzw this ignores aClipRect.
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsITheme *theme = presContext->GetTheme();
|
|
nsRect borderArea(ToReferenceFrame(), mFrame->GetSize());
|
|
nsRect drawing(borderArea);
|
|
theme->GetWidgetOverflow(presContext->DeviceContext(), mFrame, mAppearance,
|
|
&drawing);
|
|
drawing.IntersectRect(drawing, aBounds);
|
|
theme->DrawWidgetBackground(aCtx, mFrame, mAppearance, borderArea, drawing);
|
|
}
|
|
|
|
bool nsDisplayThemedBackground::IsWindowActive()
|
|
{
|
|
EventStates docState = mFrame->GetContent()->OwnerDoc()->GetDocumentState();
|
|
return !docState.HasState(NS_DOCUMENT_STATE_WINDOW_INACTIVE);
|
|
}
|
|
|
|
void nsDisplayThemedBackground::ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion)
|
|
{
|
|
const nsDisplayThemedBackgroundGeometry* geometry = static_cast<const nsDisplayThemedBackgroundGeometry*>(aGeometry);
|
|
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
nsRect positioningArea = GetPositioningArea();
|
|
if (!positioningArea.IsEqualInterior(geometry->mPositioningArea)) {
|
|
// Invalidate everything (both old and new painting areas).
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
return;
|
|
}
|
|
if (!bounds.IsEqualInterior(geometry->mBounds)) {
|
|
// Positioning area is unchanged, so invalidate just the change in the
|
|
// painting area.
|
|
aInvalidRegion->Xor(bounds, geometry->mBounds);
|
|
}
|
|
nsITheme* theme = mFrame->PresContext()->GetTheme();
|
|
if (theme->WidgetAppearanceDependsOnWindowFocus(mAppearance) &&
|
|
IsWindowActive() != geometry->mWindowIsActive) {
|
|
aInvalidRegion->Or(*aInvalidRegion, bounds);
|
|
}
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayThemedBackground::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayThemedBackground::GetBoundsInternal() {
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
|
|
nsRect r(nsPoint(0,0), mFrame->GetSize());
|
|
presContext->GetTheme()->
|
|
GetWidgetOverflow(presContext->DeviceContext(), mFrame,
|
|
mFrame->StyleDisplay()->mAppearance, &r);
|
|
return r + ToReferenceFrame();
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundColor::ApplyOpacity(nsDisplayListBuilder* aBuilder,
|
|
float aOpacity,
|
|
const DisplayItemClip* aClip)
|
|
{
|
|
NS_ASSERTION(CanApplyOpacity(), "ApplyOpacity should be allowed");
|
|
mColor.a = mColor.a * aOpacity;
|
|
if (aClip) {
|
|
IntersectClip(aBuilder, *aClip);
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundColor::CanApplyOpacity() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundColor::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
if (mColor == Color()) {
|
|
return;
|
|
}
|
|
|
|
nsRect borderBox = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
|
|
#if 0
|
|
// See https://bugzilla.mozilla.org/show_bug.cgi?id=1148418#c21 for why this
|
|
// results in a precision induced rounding issue that makes the rect one
|
|
// pixel shorter in rare cases. Disabled in favor of the old code for now.
|
|
// Note that the pref layout.css.devPixelsPerPx needs to be set to 1 to
|
|
// reproduce the bug.
|
|
DrawTarget& aDrawTarget = *aCtx->GetDrawTarget();
|
|
|
|
Rect rect = NSRectToSnappedRect(borderBox,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel(),
|
|
aDrawTarget);
|
|
ColorPattern color(ToDeviceColor(mColor));
|
|
aDrawTarget.FillRect(rect, color);
|
|
#else
|
|
gfxContext* ctx = aCtx->ThebesContext();
|
|
|
|
gfxRect bounds =
|
|
nsLayoutUtils::RectToGfxRect(borderBox, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
ctx->SetColor(mColor);
|
|
ctx->NewPath();
|
|
ctx->Rectangle(bounds, true);
|
|
ctx->Fill();
|
|
#endif
|
|
}
|
|
|
|
nsRegion
|
|
nsDisplayBackgroundColor::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap)
|
|
{
|
|
if (mColor.a != 1) {
|
|
return nsRegion();
|
|
}
|
|
|
|
if (!mBackgroundStyle)
|
|
return nsRegion();
|
|
|
|
*aSnap = true;
|
|
|
|
const nsStyleBackground::Layer& bottomLayer = mBackgroundStyle->BottomLayer();
|
|
nsRect borderBox = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
return nsDisplayBackgroundImage::GetInsideClipRegion(this, presContext, bottomLayer.mClip, borderBox, aSnap);
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackgroundColor::IsUniform(nsDisplayListBuilder* aBuilder, nscolor* aColor)
|
|
{
|
|
*aColor = mColor.ToABGR();
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundColor::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
if (!RoundedBorderIntersectsRect(mFrame, ToReferenceFrame(), aRect)) {
|
|
// aRect doesn't intersect our border-radius curve.
|
|
return;
|
|
}
|
|
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
|
|
void
|
|
nsDisplayBackgroundColor::WriteDebugInfo(std::stringstream& aStream)
|
|
{
|
|
aStream << " (rgba " << mColor.r << "," << mColor.g << ","
|
|
<< mColor.b << "," << mColor.a << ")";
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayClearBackground::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
RefPtr<ColorLayer> layer = static_cast<ColorLayer*>
|
|
(aManager->GetLayerBuilder()->GetLeafLayerFor(aBuilder, this));
|
|
if (!layer) {
|
|
layer = aManager->CreateColorLayer();
|
|
if (!layer)
|
|
return nullptr;
|
|
}
|
|
layer->SetColor(Color());
|
|
layer->SetMixBlendMode(gfx::CompositionOp::OP_SOURCE);
|
|
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
layer->SetBounds(bounds.ToNearestPixels(appUnitsPerDevPixel)); // XXX Do we need to respect the parent layer's scale here?
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayOutline::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
*aSnap = false;
|
|
return mFrame->GetVisualOverflowRectRelativeToSelf() + ToReferenceFrame();
|
|
}
|
|
|
|
void
|
|
nsDisplayOutline::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
// TODO join outlines together
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsCSSRendering::PaintOutline(mFrame->PresContext(), *aCtx, mFrame,
|
|
mVisibleRect,
|
|
nsRect(offset, mFrame->GetSize()),
|
|
mFrame->StyleContext());
|
|
}
|
|
|
|
bool
|
|
nsDisplayOutline::IsInvisibleInRect(const nsRect& aRect)
|
|
{
|
|
const nsStyleOutline* outline = mFrame->StyleOutline();
|
|
nsRect borderBox(ToReferenceFrame(), mFrame->GetSize());
|
|
if (borderBox.Contains(aRect) &&
|
|
!nsLayoutUtils::HasNonZeroCorner(outline->mOutlineRadius)) {
|
|
if (outline->mOutlineOffset >= 0) {
|
|
// aRect is entirely inside the border-rect, and the outline isn't
|
|
// rendered inside the border-rect, so the outline is not visible.
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsDisplayEventReceiver::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
if (!RoundedBorderIntersectsRect(mFrame, ToReferenceFrame(), aRect)) {
|
|
// aRect doesn't intersect our border-radius curve.
|
|
return;
|
|
}
|
|
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
|
|
void
|
|
nsDisplayLayerEventRegions::AddFrame(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame)
|
|
{
|
|
NS_ASSERTION(aBuilder->FindReferenceFrameFor(aFrame) == aBuilder->FindReferenceFrameFor(mFrame),
|
|
"Reference frame mismatch");
|
|
if (aBuilder->IsInsidePointerEventsNoneDoc()) {
|
|
// Somewhere up the parent document chain is a subdocument with pointer-
|
|
// events:none set on it (and without a mozpasspointerevents).
|
|
return;
|
|
}
|
|
if (!aFrame->GetParent()) {
|
|
MOZ_ASSERT(aFrame->GetType() == nsGkAtoms::viewportFrame);
|
|
// Viewport frames are never event targets, other frames, like canvas frames,
|
|
// are the event targets for any regions viewport frames may cover.
|
|
return;
|
|
}
|
|
uint8_t pointerEvents = aFrame->StyleVisibility()->GetEffectivePointerEvents(aFrame);
|
|
if (pointerEvents == NS_STYLE_POINTER_EVENTS_NONE) {
|
|
return;
|
|
}
|
|
if (!aFrame->StyleVisibility()->IsVisible()) {
|
|
return;
|
|
}
|
|
// XXX handle other pointerEvents values for SVG
|
|
|
|
// XXX Do something clever here for the common case where the border box
|
|
// is obviously entirely inside mHitRegion.
|
|
nsRect borderBox;
|
|
if (nsLayoutUtils::GetScrollableFrameFor(aFrame)) {
|
|
// If the frame is content of a scrollframe, then we need to pick up the
|
|
// area corresponding to the overflow rect as well. Otherwise the parts of
|
|
// the overflow that are not occupied by descendants get skipped and the
|
|
// APZ code sends touch events to the content underneath instead.
|
|
// See https://bugzilla.mozilla.org/show_bug.cgi?id=1127773#c15.
|
|
borderBox = aFrame->GetScrollableOverflowRect();
|
|
} else {
|
|
borderBox = nsRect(nsPoint(0, 0), aFrame->GetSize());
|
|
}
|
|
borderBox += aBuilder->ToReferenceFrame(aFrame);
|
|
|
|
const DisplayItemClip* clip = aBuilder->ClipState().GetCurrentCombinedClip(aBuilder);
|
|
bool borderBoxHasRoundedCorners =
|
|
nsLayoutUtils::HasNonZeroCorner(aFrame->StyleBorder()->mBorderRadius);
|
|
if (clip) {
|
|
borderBox = clip->ApplyNonRoundedIntersection(borderBox);
|
|
if (clip->GetRoundedRectCount() > 0) {
|
|
borderBoxHasRoundedCorners = true;
|
|
}
|
|
}
|
|
if (borderBoxHasRoundedCorners ||
|
|
(aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT)) {
|
|
mMaybeHitRegion.Or(mMaybeHitRegion, borderBox);
|
|
} else {
|
|
mHitRegion.Or(mHitRegion, borderBox);
|
|
}
|
|
|
|
if (aBuilder->IsBuildingNonLayerizedScrollbar() ||
|
|
aBuilder->GetAncestorHasApzAwareEventHandler())
|
|
{
|
|
// Scrollbars may be painted into a layer below the actual layer they will
|
|
// scroll, and therefore wheel events may be dispatched to the outer frame
|
|
// instead of the intended scrollframe. To address this, we force a d-t-c
|
|
// region on scrollbar frames that won't be placed in their own layer. See
|
|
// bug 1213324 for details.
|
|
mDispatchToContentHitRegion.Or(mDispatchToContentHitRegion, borderBox);
|
|
} else if (aFrame->GetType() == nsGkAtoms::objectFrame) {
|
|
// If the frame is a plugin frame and wants to handle wheel events as
|
|
// default action, we should add the frame to dispatch-to-content region.
|
|
nsPluginFrame* pluginFrame = do_QueryFrame(aFrame);
|
|
if (pluginFrame && pluginFrame->WantsToHandleWheelEventAsDefaultAction()) {
|
|
mDispatchToContentHitRegion.Or(mDispatchToContentHitRegion, borderBox);
|
|
}
|
|
}
|
|
|
|
// Touch action region
|
|
|
|
uint32_t touchAction = nsLayoutUtils::GetTouchActionFromFrame(aFrame);
|
|
if (touchAction & NS_STYLE_TOUCH_ACTION_NONE) {
|
|
mNoActionRegion.Or(mNoActionRegion, borderBox);
|
|
} else {
|
|
if ((touchAction & NS_STYLE_TOUCH_ACTION_PAN_X)) {
|
|
mHorizontalPanRegion.Or(mHorizontalPanRegion, borderBox);
|
|
}
|
|
if ((touchAction & NS_STYLE_TOUCH_ACTION_PAN_Y)) {
|
|
mVerticalPanRegion.Or(mVerticalPanRegion, borderBox);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDisplayLayerEventRegions::AddInactiveScrollPort(const nsRect& aRect)
|
|
{
|
|
mHitRegion.Or(mHitRegion, aRect);
|
|
mDispatchToContentHitRegion.Or(mDispatchToContentHitRegion, aRect);
|
|
}
|
|
|
|
void
|
|
nsDisplayLayerEventRegions::WriteDebugInfo(std::stringstream& aStream)
|
|
{
|
|
if (!mHitRegion.IsEmpty()) {
|
|
AppendToString(aStream, mHitRegion, " (hitRegion ", ")");
|
|
}
|
|
if (!mMaybeHitRegion.IsEmpty()) {
|
|
AppendToString(aStream, mMaybeHitRegion, " (maybeHitRegion ", ")");
|
|
}
|
|
if (!mDispatchToContentHitRegion.IsEmpty()) {
|
|
AppendToString(aStream, mDispatchToContentHitRegion, " (dispatchToContentRegion ", ")");
|
|
}
|
|
}
|
|
|
|
nsDisplayCaret::nsDisplayCaret(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aCaretFrame)
|
|
: nsDisplayItem(aBuilder, aCaretFrame)
|
|
, mCaret(aBuilder->GetCaret())
|
|
, mBounds(aBuilder->GetCaretRect() + ToReferenceFrame())
|
|
, mNeedsCustomScrollClip(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayCaret);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayCaret::~nsDisplayCaret()
|
|
{
|
|
MOZ_COUNT_DTOR(nsDisplayCaret);
|
|
}
|
|
#endif
|
|
|
|
nsRect
|
|
nsDisplayCaret::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
*aSnap = true;
|
|
// The caret returns a rect in the coordinates of mFrame.
|
|
return mBounds;
|
|
}
|
|
|
|
void
|
|
nsDisplayCaret::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
// Note: Because we exist, we know that the caret is visible, so we don't
|
|
// need to check for the caret's visibility.
|
|
mCaret->PaintCaret(aBuilder, *aCtx->GetDrawTarget(), mFrame, ToReferenceFrame());
|
|
}
|
|
|
|
nsDisplayBorder::nsDisplayBorder(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayBorder);
|
|
|
|
mBounds = CalculateBounds(*mFrame->StyleBorder());
|
|
}
|
|
|
|
bool
|
|
nsDisplayBorder::IsInvisibleInRect(const nsRect& aRect)
|
|
{
|
|
nsRect paddingRect = mFrame->GetPaddingRect() - mFrame->GetPosition() +
|
|
ToReferenceFrame();
|
|
const nsStyleBorder *styleBorder;
|
|
if (paddingRect.Contains(aRect) &&
|
|
!(styleBorder = mFrame->StyleBorder())->IsBorderImageLoaded() &&
|
|
!nsLayoutUtils::HasNonZeroCorner(styleBorder->mBorderRadius)) {
|
|
// aRect is entirely inside the content rect, and no part
|
|
// of the border is rendered inside the content rect, so we are not
|
|
// visible
|
|
// Skip this if there's a border-image (which draws a background
|
|
// too) or if there is a border-radius (which makes the border draw
|
|
// further in).
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsDisplayItemGeometry*
|
|
nsDisplayBorder::AllocateGeometry(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
return new nsDisplayBorderGeometry(this, aBuilder);
|
|
}
|
|
|
|
void
|
|
nsDisplayBorder::ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion)
|
|
{
|
|
const nsDisplayBorderGeometry* geometry = static_cast<const nsDisplayBorderGeometry*>(aGeometry);
|
|
bool snap;
|
|
|
|
if (!geometry->mBounds.IsEqualInterior(GetBounds(aBuilder, &snap)) ||
|
|
!geometry->mContentRect.IsEqualInterior(GetContentRect())) {
|
|
// We can probably get away with only invalidating the difference
|
|
// between the border and padding rects, but the XUL ui at least
|
|
// is apparently painting a background with this?
|
|
aInvalidRegion->Or(GetBounds(aBuilder, &snap), geometry->mBounds);
|
|
}
|
|
|
|
if (aBuilder->ShouldSyncDecodeImages() &&
|
|
geometry->ShouldInvalidateToSyncDecodeImages()) {
|
|
aInvalidRegion->Or(*aInvalidRegion, GetBounds(aBuilder, &snap));
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDisplayBorder::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
|
|
PaintBorderFlags flags = aBuilder->ShouldSyncDecodeImages()
|
|
? PaintBorderFlags::SYNC_DECODE_IMAGES
|
|
: PaintBorderFlags();
|
|
|
|
image::DrawResult result =
|
|
nsCSSRendering::PaintBorder(mFrame->PresContext(), *aCtx, mFrame,
|
|
mVisibleRect,
|
|
nsRect(offset, mFrame->GetSize()),
|
|
mFrame->StyleContext(),
|
|
flags,
|
|
mFrame->GetSkipSides());
|
|
|
|
nsDisplayBorderGeometry::UpdateDrawResult(this, result);
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBorder::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBorder::CalculateBounds(const nsStyleBorder& aStyleBorder)
|
|
{
|
|
nsRect borderBounds(ToReferenceFrame(), mFrame->GetSize());
|
|
if (aStyleBorder.IsBorderImageLoaded()) {
|
|
borderBounds.Inflate(aStyleBorder.GetImageOutset());
|
|
return borderBounds;
|
|
} else {
|
|
nsMargin border = aStyleBorder.GetComputedBorder();
|
|
nsRect result;
|
|
if (border.top > 0) {
|
|
result = nsRect(borderBounds.X(), borderBounds.Y(), borderBounds.Width(), border.top);
|
|
}
|
|
if (border.right > 0) {
|
|
result.UnionRect(result, nsRect(borderBounds.XMost() - border.right, borderBounds.Y(), border.right, borderBounds.Height()));
|
|
}
|
|
if (border.bottom > 0) {
|
|
result.UnionRect(result, nsRect(borderBounds.X(), borderBounds.YMost() - border.bottom, borderBounds.Width(), border.bottom));
|
|
}
|
|
if (border.left > 0) {
|
|
result.UnionRect(result, nsRect(borderBounds.X(), borderBounds.Y(), border.left, borderBounds.Height()));
|
|
}
|
|
|
|
nscoord radii[8];
|
|
if (mFrame->GetBorderRadii(radii)) {
|
|
if (border.left > 0 || border.top > 0) {
|
|
nsSize cornerSize(radii[NS_CORNER_TOP_LEFT_X], radii[NS_CORNER_TOP_LEFT_Y]);
|
|
result.UnionRect(result, nsRect(borderBounds.TopLeft(), cornerSize));
|
|
}
|
|
if (border.top > 0 || border.right > 0) {
|
|
nsSize cornerSize(radii[NS_CORNER_TOP_RIGHT_X], radii[NS_CORNER_TOP_RIGHT_Y]);
|
|
result.UnionRect(result, nsRect(borderBounds.TopRight() - nsPoint(cornerSize.width, 0), cornerSize));
|
|
}
|
|
if (border.right > 0 || border.bottom > 0) {
|
|
nsSize cornerSize(radii[NS_CORNER_BOTTOM_RIGHT_X], radii[NS_CORNER_BOTTOM_RIGHT_Y]);
|
|
result.UnionRect(result, nsRect(borderBounds.BottomRight() - nsPoint(cornerSize.width, cornerSize.height), cornerSize));
|
|
}
|
|
if (border.bottom > 0 || border.left > 0) {
|
|
nsSize cornerSize(radii[NS_CORNER_BOTTOM_LEFT_X], radii[NS_CORNER_BOTTOM_LEFT_Y]);
|
|
result.UnionRect(result, nsRect(borderBounds.BottomLeft() - nsPoint(0, cornerSize.height), cornerSize));
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// Given a region, compute a conservative approximation to it as a list
|
|
// of rectangles that aren't vertically adjacent (i.e., vertically
|
|
// adjacent or overlapping rectangles are combined).
|
|
// Right now this is only approximate, some vertically overlapping rectangles
|
|
// aren't guaranteed to be combined.
|
|
static void
|
|
ComputeDisjointRectangles(const nsRegion& aRegion,
|
|
nsTArray<nsRect>* aRects) {
|
|
nscoord accumulationMargin = nsPresContext::CSSPixelsToAppUnits(25);
|
|
nsRect accumulated;
|
|
nsRegionRectIterator iter(aRegion);
|
|
while (true) {
|
|
const nsRect* r = iter.Next();
|
|
if (r && !accumulated.IsEmpty() &&
|
|
accumulated.YMost() >= r->y - accumulationMargin) {
|
|
accumulated.UnionRect(accumulated, *r);
|
|
continue;
|
|
}
|
|
|
|
if (!accumulated.IsEmpty()) {
|
|
aRects->AppendElement(accumulated);
|
|
accumulated.SetEmpty();
|
|
}
|
|
|
|
if (!r)
|
|
break;
|
|
|
|
accumulated = *r;
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDisplayBoxShadowOuter::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderRect = mFrame->VisualBorderRectRelativeToSelf() + offset;
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsAutoTArray<nsRect,10> rects;
|
|
ComputeDisjointRectangles(mVisibleRegion, &rects);
|
|
|
|
PROFILER_LABEL("nsDisplayBoxShadowOuter", "Paint",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
|
|
for (uint32_t i = 0; i < rects.Length(); ++i) {
|
|
nsCSSRendering::PaintBoxShadowOuter(presContext, *aCtx, mFrame,
|
|
borderRect, rects[i], mOpacity);
|
|
}
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBoxShadowOuter::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
*aSnap = false;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBoxShadowOuter::GetBoundsInternal() {
|
|
return nsLayoutUtils::GetBoxShadowRectForFrame(mFrame, mFrame->GetSize()) +
|
|
ToReferenceFrame();
|
|
}
|
|
|
|
bool
|
|
nsDisplayBoxShadowOuter::IsInvisibleInRect(const nsRect& aRect)
|
|
{
|
|
nsPoint origin = ToReferenceFrame();
|
|
nsRect frameRect(origin, mFrame->GetSize());
|
|
if (!frameRect.Contains(aRect))
|
|
return false;
|
|
|
|
// the visible region is entirely inside the border-rect, and box shadows
|
|
// never render within the border-rect (unless there's a border radius).
|
|
nscoord twipsRadii[8];
|
|
bool hasBorderRadii = mFrame->GetBorderRadii(twipsRadii);
|
|
if (!hasBorderRadii)
|
|
return true;
|
|
|
|
return RoundedRectContainsRect(frameRect, twipsRadii, aRect);
|
|
}
|
|
|
|
bool
|
|
nsDisplayBoxShadowOuter::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion)) {
|
|
return false;
|
|
}
|
|
|
|
// Store the actual visible region
|
|
mVisibleRegion.And(*aVisibleRegion, mVisibleRect);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsDisplayBoxShadowOuter::ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion)
|
|
{
|
|
const nsDisplayBoxShadowOuterGeometry* geometry =
|
|
static_cast<const nsDisplayBoxShadowOuterGeometry*>(aGeometry);
|
|
bool snap;
|
|
if (!geometry->mBounds.IsEqualInterior(GetBounds(aBuilder, &snap)) ||
|
|
!geometry->mBorderRect.IsEqualInterior(GetBorderRect()) ||
|
|
mOpacity != geometry->mOpacity) {
|
|
nsRegion oldShadow, newShadow;
|
|
nscoord dontCare[8];
|
|
bool hasBorderRadius = mFrame->GetBorderRadii(dontCare);
|
|
if (hasBorderRadius) {
|
|
// If we have rounded corners then we need to invalidate the frame area
|
|
// too since we paint into it.
|
|
oldShadow = geometry->mBounds;
|
|
newShadow = GetBounds(aBuilder, &snap);
|
|
} else {
|
|
oldShadow.Sub(geometry->mBounds, geometry->mBorderRect);
|
|
newShadow.Sub(GetBounds(aBuilder, &snap), GetBorderRect());
|
|
}
|
|
aInvalidRegion->Or(oldShadow, newShadow);
|
|
}
|
|
}
|
|
|
|
|
|
void
|
|
nsDisplayBoxShadowInner::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderRect = nsRect(offset, mFrame->GetSize());
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsAutoTArray<nsRect,10> rects;
|
|
ComputeDisjointRectangles(mVisibleRegion, &rects);
|
|
|
|
PROFILER_LABEL("nsDisplayBoxShadowInner", "Paint",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
|
|
DrawTarget* drawTarget = aCtx->GetDrawTarget();
|
|
gfxContext* gfx = aCtx->ThebesContext();
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
for (uint32_t i = 0; i < rects.Length(); ++i) {
|
|
gfx->Save();
|
|
gfx->Clip(NSRectToSnappedRect(rects[i], appUnitsPerDevPixel, *drawTarget));
|
|
nsCSSRendering::PaintBoxShadowInner(presContext, *aCtx, mFrame,
|
|
borderRect, rects[i]);
|
|
gfx->Restore();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsDisplayBoxShadowInner::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion)) {
|
|
return false;
|
|
}
|
|
|
|
// Store the actual visible region
|
|
mVisibleRegion.And(*aVisibleRegion, mVisibleRect);
|
|
return true;
|
|
}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mOverrideZIndex(0)
|
|
, mHasZIndexOverride(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayWrapList);
|
|
|
|
mBaseVisibleRect = mVisibleRect;
|
|
|
|
mList.AppendToTop(aList);
|
|
UpdateBounds(aBuilder);
|
|
|
|
if (!aFrame || !aFrame->IsTransformed()) {
|
|
return;
|
|
}
|
|
|
|
// If we're a transformed frame, then we need to find out if we're inside
|
|
// the nsDisplayTransform or outside of it. Frames inside the transform
|
|
// need mReferenceFrame == mFrame, outside needs the next ancestor
|
|
// reference frame.
|
|
// If we're inside the transform, then the nsDisplayItem constructor
|
|
// will have done the right thing.
|
|
// If we're outside the transform, then we should have only one child
|
|
// (since nsDisplayTransform wraps all actual content), and that child
|
|
// will have the correct reference frame set (since nsDisplayTransform
|
|
// handles this explictly).
|
|
nsDisplayItem *i = mList.GetBottom();
|
|
if (i && (!i->GetAbove() || i->GetType() == TYPE_TRANSFORM) &&
|
|
i->Frame() == mFrame) {
|
|
mReferenceFrame = i->ReferenceFrame();
|
|
mToReferenceFrame = i->ToReferenceFrame();
|
|
}
|
|
mVisibleRect = aBuilder->GetDirtyRect() +
|
|
aBuilder->GetCurrentFrameOffsetToReferenceFrame();
|
|
}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayItem* aItem)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mOverrideZIndex(0)
|
|
, mHasZIndexOverride(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayWrapList);
|
|
|
|
mBaseVisibleRect = mVisibleRect;
|
|
|
|
mList.AppendToTop(aItem);
|
|
UpdateBounds(aBuilder);
|
|
|
|
if (!aFrame || !aFrame->IsTransformed()) {
|
|
return;
|
|
}
|
|
|
|
// See the previous nsDisplayWrapList constructor
|
|
if (aItem->Frame() == aFrame) {
|
|
mReferenceFrame = aItem->ReferenceFrame();
|
|
mToReferenceFrame = aItem->ToReferenceFrame();
|
|
}
|
|
mVisibleRect = aBuilder->GetDirtyRect() +
|
|
aBuilder->GetCurrentFrameOffsetToReferenceFrame();
|
|
}
|
|
|
|
nsDisplayWrapList::~nsDisplayWrapList() {
|
|
mList.DeleteAll();
|
|
|
|
MOZ_COUNT_DTOR(nsDisplayWrapList);
|
|
}
|
|
|
|
void
|
|
nsDisplayWrapList::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
|
|
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) {
|
|
mList.HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayWrapList::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
*aSnap = false;
|
|
return mBounds;
|
|
}
|
|
|
|
bool
|
|
nsDisplayWrapList::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
// Convert the passed in visible region to our appunits.
|
|
nsRegion visibleRegion;
|
|
// mVisibleRect has been clipped to GetClippedBounds
|
|
visibleRegion.And(*aVisibleRegion, mVisibleRect);
|
|
nsRegion originalVisibleRegion = visibleRegion;
|
|
|
|
bool retval =
|
|
mList.ComputeVisibilityForSublist(aBuilder, &visibleRegion,
|
|
mVisibleRect);
|
|
|
|
nsRegion removed;
|
|
// removed = originalVisibleRegion - visibleRegion
|
|
removed.Sub(originalVisibleRegion, visibleRegion);
|
|
// aVisibleRegion = aVisibleRegion - removed (modulo any simplifications
|
|
// SubtractFromVisibleRegion does)
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, removed);
|
|
|
|
return retval;
|
|
}
|
|
|
|
nsRegion
|
|
nsDisplayWrapList::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) {
|
|
*aSnap = false;
|
|
nsRegion result;
|
|
if (mList.IsOpaque()) {
|
|
// Everything within GetBounds that's visible is opaque.
|
|
result = GetBounds(aBuilder, aSnap);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool nsDisplayWrapList::IsUniform(nsDisplayListBuilder* aBuilder, nscolor* aColor) {
|
|
// We could try to do something but let's conservatively just return false.
|
|
return false;
|
|
}
|
|
|
|
void nsDisplayWrapList::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
NS_ERROR("nsDisplayWrapList should have been flattened away for painting");
|
|
}
|
|
|
|
/**
|
|
* Returns true if all descendant display items can be placed in the same
|
|
* PaintedLayer --- GetLayerState returns LAYER_INACTIVE or LAYER_NONE,
|
|
* and they all have the expected animated geometry root.
|
|
*/
|
|
static LayerState
|
|
RequiredLayerStateForChildren(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters,
|
|
const nsDisplayList& aList,
|
|
nsIFrame* aExpectedAnimatedGeometryRootForChildren)
|
|
{
|
|
LayerState result = LAYER_INACTIVE;
|
|
for (nsDisplayItem* i = aList.GetBottom(); i; i = i->GetAbove()) {
|
|
if (result == LAYER_INACTIVE &&
|
|
nsLayoutUtils::GetAnimatedGeometryRootFor(i, aBuilder) !=
|
|
aExpectedAnimatedGeometryRootForChildren) {
|
|
result = LAYER_ACTIVE;
|
|
}
|
|
|
|
LayerState state = i->GetLayerState(aBuilder, aManager, aParameters);
|
|
if ((state == LAYER_ACTIVE || state == LAYER_ACTIVE_FORCE) &&
|
|
state > result) {
|
|
result = state;
|
|
}
|
|
if (state == LAYER_ACTIVE_EMPTY && state > result) {
|
|
result = LAYER_ACTIVE_FORCE;
|
|
}
|
|
if (state == LAYER_NONE) {
|
|
nsDisplayList* list = i->GetSameCoordinateSystemChildren();
|
|
if (list) {
|
|
LayerState childState =
|
|
RequiredLayerStateForChildren(aBuilder, aManager, aParameters, *list,
|
|
aExpectedAnimatedGeometryRootForChildren);
|
|
if (childState > result) {
|
|
result = childState;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsRect nsDisplayWrapList::GetComponentAlphaBounds(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
nsRect bounds;
|
|
for (nsDisplayItem* i = mList.GetBottom(); i; i = i->GetAbove()) {
|
|
bounds.UnionRect(bounds, i->GetComponentAlphaBounds(aBuilder));
|
|
}
|
|
return bounds;
|
|
}
|
|
|
|
void
|
|
nsDisplayWrapList::SetVisibleRect(const nsRect& aRect)
|
|
{
|
|
mVisibleRect = aRect;
|
|
}
|
|
|
|
void
|
|
nsDisplayWrapList::SetReferenceFrame(const nsIFrame* aFrame)
|
|
{
|
|
mReferenceFrame = aFrame;
|
|
mToReferenceFrame = mFrame->GetOffsetToCrossDoc(mReferenceFrame);
|
|
}
|
|
|
|
static nsresult
|
|
WrapDisplayList(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsDisplayList* aList, nsDisplayWrapper* aWrapper) {
|
|
if (!aList->GetTop())
|
|
return NS_OK;
|
|
nsDisplayItem* item = aWrapper->WrapList(aBuilder, aFrame, aList);
|
|
if (!item)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
// aList was emptied
|
|
aList->AppendToTop(item);
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult
|
|
WrapEachDisplayItem(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList, nsDisplayWrapper* aWrapper) {
|
|
nsDisplayList newList;
|
|
nsDisplayItem* item;
|
|
while ((item = aList->RemoveBottom())) {
|
|
item = aWrapper->WrapItem(aBuilder, item);
|
|
if (!item)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
newList.AppendToTop(item);
|
|
}
|
|
// aList was emptied
|
|
aList->AppendToTop(&newList);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDisplayWrapper::WrapLists(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, const nsDisplayListSet& aIn, const nsDisplayListSet& aOut)
|
|
{
|
|
nsresult rv = WrapListsInPlace(aBuilder, aFrame, aIn);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (&aOut == &aIn)
|
|
return NS_OK;
|
|
aOut.BorderBackground()->AppendToTop(aIn.BorderBackground());
|
|
aOut.BlockBorderBackgrounds()->AppendToTop(aIn.BlockBorderBackgrounds());
|
|
aOut.Floats()->AppendToTop(aIn.Floats());
|
|
aOut.Content()->AppendToTop(aIn.Content());
|
|
aOut.PositionedDescendants()->AppendToTop(aIn.PositionedDescendants());
|
|
aOut.Outlines()->AppendToTop(aIn.Outlines());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDisplayWrapper::WrapListsInPlace(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, const nsDisplayListSet& aLists)
|
|
{
|
|
nsresult rv;
|
|
if (WrapBorderBackground()) {
|
|
// Our border-backgrounds are in-flow
|
|
rv = WrapDisplayList(aBuilder, aFrame, aLists.BorderBackground(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
// Our block border-backgrounds are in-flow
|
|
rv = WrapDisplayList(aBuilder, aFrame, aLists.BlockBorderBackgrounds(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// The floats are not in flow
|
|
rv = WrapEachDisplayItem(aBuilder, aLists.Floats(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// Our child content is in flow
|
|
rv = WrapDisplayList(aBuilder, aFrame, aLists.Content(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// The positioned descendants may not be in-flow
|
|
rv = WrapEachDisplayItem(aBuilder, aLists.PositionedDescendants(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// The outlines may not be in-flow
|
|
return WrapEachDisplayItem(aBuilder, aLists.Outlines(), this);
|
|
}
|
|
|
|
nsDisplayOpacity::nsDisplayOpacity(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
bool aForEventsOnly)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList)
|
|
, mOpacity(aFrame->StyleDisplay()->mOpacity)
|
|
, mForEventsOnly(aForEventsOnly)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayOpacity);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayOpacity::~nsDisplayOpacity() {
|
|
MOZ_COUNT_DTOR(nsDisplayOpacity);
|
|
}
|
|
#endif
|
|
|
|
nsRegion nsDisplayOpacity::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) {
|
|
*aSnap = false;
|
|
// The only time where mOpacity == 1.0 should be when we have will-change.
|
|
// We could report this as opaque then but when the will-change value starts
|
|
// animating the element would become non opaque and could cause repaints.
|
|
return nsRegion();
|
|
}
|
|
|
|
// nsDisplayOpacity uses layers for rendering
|
|
already_AddRefed<Layer>
|
|
nsDisplayOpacity::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters) {
|
|
RefPtr<Layer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, &mList,
|
|
aContainerParameters, nullptr,
|
|
FrameLayerBuilder::CONTAINER_ALLOW_PULL_BACKGROUND_COLOR);
|
|
if (!container)
|
|
return nullptr;
|
|
|
|
container->SetOpacity(mOpacity);
|
|
nsDisplayListBuilder::AddAnimationsAndTransitionsToLayer(container, aBuilder,
|
|
this, mFrame,
|
|
eCSSProperty_opacity);
|
|
return container.forget();
|
|
}
|
|
|
|
/**
|
|
* This doesn't take into account layer scaling --- the layer may be
|
|
* rendered at a higher (or lower) resolution, affecting the retained layer
|
|
* size --- but this should be good enough.
|
|
*/
|
|
static bool
|
|
IsItemTooSmallForActiveLayer(nsDisplayItem* aItem)
|
|
{
|
|
nsIntRect visibleDevPixels = aItem->GetVisibleRect().ToOutsidePixels(
|
|
aItem->Frame()->PresContext()->AppUnitsPerDevPixel());
|
|
static const int MIN_ACTIVE_LAYER_SIZE_DEV_PIXELS = 16;
|
|
return visibleDevPixels.Size() <
|
|
nsIntSize(MIN_ACTIVE_LAYER_SIZE_DEV_PIXELS, MIN_ACTIVE_LAYER_SIZE_DEV_PIXELS);
|
|
}
|
|
|
|
bool
|
|
nsDisplayOpacity::NeedsActiveLayer(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (ActiveLayerTracker::IsStyleAnimated(aBuilder, mFrame, eCSSProperty_opacity) &&
|
|
!IsItemTooSmallForActiveLayer(this))
|
|
return true;
|
|
if (nsLayoutUtils::HasAnimationsForCompositor(mFrame, eCSSProperty_opacity)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
nsDisplayOpacity::ApplyOpacity(nsDisplayListBuilder* aBuilder,
|
|
float aOpacity,
|
|
const DisplayItemClip* aClip)
|
|
{
|
|
NS_ASSERTION(CanApplyOpacity(), "ApplyOpacity should be allowed");
|
|
mOpacity = mOpacity * aOpacity;
|
|
if (aClip) {
|
|
IntersectClip(aBuilder, *aClip);
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsDisplayOpacity::CanApplyOpacity() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsDisplayOpacity::ShouldFlattenAway(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (NeedsActiveLayer(aBuilder))
|
|
return false;
|
|
|
|
nsDisplayItem* child = mList.GetBottom();
|
|
// Only try folding our opacity down if we have at most three children
|
|
// that don't overlap and can all apply the opacity to themselves.
|
|
if (!child) {
|
|
return false;
|
|
}
|
|
struct {
|
|
nsDisplayItem* item;
|
|
nsRect bounds;
|
|
} children[3];
|
|
bool snap;
|
|
uint32_t numChildren = 0;
|
|
for (; numChildren < ArrayLength(children) && child; numChildren++, child = child->GetAbove()) {
|
|
if (child->GetType() == nsDisplayItem::TYPE_LAYER_EVENT_REGIONS) {
|
|
numChildren--;
|
|
continue;
|
|
}
|
|
if (!child->CanApplyOpacity()) {
|
|
return false;
|
|
}
|
|
children[numChildren].item = child;
|
|
children[numChildren].bounds = child->GetBounds(aBuilder, &snap);
|
|
}
|
|
if (child) {
|
|
// we have a fourth (or more) child
|
|
return false;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < numChildren; i++) {
|
|
for (uint32_t j = i+1; j < numChildren; j++) {
|
|
if (children[i].bounds.Intersects(children[j].bounds)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (uint32_t i = 0; i < numChildren; i++) {
|
|
children[i].item->ApplyOpacity(aBuilder, mOpacity, mClip);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsDisplayItem::LayerState
|
|
nsDisplayOpacity::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters) {
|
|
// If we only created this item so that we'd get correct nsDisplayEventRegions for child
|
|
// frames, then force us to inactive to avoid unnecessary layerization changes for content
|
|
// that won't ever be painted.
|
|
if (mForEventsOnly) {
|
|
MOZ_ASSERT(mOpacity == 0);
|
|
return LAYER_INACTIVE;
|
|
}
|
|
|
|
if (NeedsActiveLayer(aBuilder))
|
|
return LAYER_ACTIVE;
|
|
|
|
return RequiredLayerStateForChildren(aBuilder, aManager, aParameters, mList,
|
|
nsLayoutUtils::GetAnimatedGeometryRootFor(this, aBuilder));
|
|
}
|
|
|
|
bool
|
|
nsDisplayOpacity::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
// Our children are translucent so we should not allow them to subtract
|
|
// area from aVisibleRegion. We do need to find out what is visible under
|
|
// our children in the temporary compositing buffer, because if our children
|
|
// paint our entire bounds opaquely then we don't need an alpha channel in
|
|
// the temporary compositing buffer.
|
|
nsRect bounds = GetClippedBounds(aBuilder);
|
|
nsRegion visibleUnderChildren;
|
|
visibleUnderChildren.And(*aVisibleRegion, bounds);
|
|
return
|
|
nsDisplayWrapList::ComputeVisibility(aBuilder, &visibleUnderChildren);
|
|
}
|
|
|
|
bool nsDisplayOpacity::TryMerge(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem) {
|
|
if (aItem->GetType() != TYPE_OPACITY)
|
|
return false;
|
|
// items for the same content element should be merged into a single
|
|
// compositing group
|
|
// aItem->GetUnderlyingFrame() returns non-null because it's nsDisplayOpacity
|
|
if (aItem->Frame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
if (aItem->GetClip() != GetClip())
|
|
return false;
|
|
MergeFromTrackingMergedFrames(static_cast<nsDisplayOpacity*>(aItem));
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsDisplayOpacity::WriteDebugInfo(std::stringstream& aStream)
|
|
{
|
|
aStream << " (opacity " << mOpacity << ")";
|
|
}
|
|
|
|
nsDisplayMixBlendMode::nsDisplayMixBlendMode(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
uint32_t aFlags)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList) {
|
|
MOZ_COUNT_CTOR(nsDisplayMixBlendMode);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayMixBlendMode::~nsDisplayMixBlendMode() {
|
|
MOZ_COUNT_DTOR(nsDisplayMixBlendMode);
|
|
}
|
|
#endif
|
|
|
|
nsRegion nsDisplayMixBlendMode::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) {
|
|
*aSnap = false;
|
|
// We are never considered opaque
|
|
return nsRegion();
|
|
}
|
|
|
|
LayerState
|
|
nsDisplayMixBlendMode::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
CompositionOp op =
|
|
nsCSSRendering::GetGFXBlendMode(mFrame->StyleDisplay()->mMixBlendMode);
|
|
return aManager->SupportsMixBlendMode(op)
|
|
? LAYER_ACTIVE
|
|
: LAYER_INACTIVE;
|
|
}
|
|
|
|
// nsDisplayMixBlendMode uses layers for rendering
|
|
already_AddRefed<Layer>
|
|
nsDisplayMixBlendMode::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters) {
|
|
ContainerLayerParameters newContainerParameters = aContainerParameters;
|
|
newContainerParameters.mDisableSubpixelAntialiasingInDescendants = true;
|
|
|
|
RefPtr<Layer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, &mList,
|
|
newContainerParameters, nullptr);
|
|
if (!container) {
|
|
return nullptr;
|
|
}
|
|
|
|
container->SetMixBlendMode(nsCSSRendering::GetGFXBlendMode(mFrame->StyleDisplay()->mMixBlendMode));
|
|
|
|
return container.forget();
|
|
}
|
|
|
|
bool nsDisplayMixBlendMode::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
// Our children are need their backdrop so we should not allow them to subtract
|
|
// area from aVisibleRegion. We do need to find out what is visible under
|
|
// our children in the temporary compositing buffer, because if our children
|
|
// paint our entire bounds opaquely then we don't need an alpha channel in
|
|
// the temporary compositing buffer.
|
|
nsRect bounds = GetClippedBounds(aBuilder);
|
|
nsRegion visibleUnderChildren;
|
|
visibleUnderChildren.And(*aVisibleRegion, bounds);
|
|
return nsDisplayWrapList::ComputeVisibility(aBuilder, &visibleUnderChildren);
|
|
}
|
|
|
|
bool nsDisplayMixBlendMode::TryMerge(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem) {
|
|
if (aItem->GetType() != TYPE_MIX_BLEND_MODE)
|
|
return false;
|
|
// items for the same content element should be merged into a single
|
|
// compositing group
|
|
// aItem->GetUnderlyingFrame() returns non-null because it's nsDisplayOpacity
|
|
if (aItem->Frame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
if (aItem->GetClip() != GetClip())
|
|
return false;
|
|
MergeFromTrackingMergedFrames(static_cast<nsDisplayMixBlendMode*>(aItem));
|
|
return true;
|
|
}
|
|
|
|
nsDisplayBlendContainer::nsDisplayBlendContainer(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
BlendModeSet& aContainedBlendModes)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList)
|
|
, mContainedBlendModes(aContainedBlendModes)
|
|
, mCanBeActive(true)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayBlendContainer);
|
|
}
|
|
|
|
nsDisplayBlendContainer::nsDisplayBlendContainer(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList)
|
|
, mCanBeActive(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayBlendContainer);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayBlendContainer::~nsDisplayBlendContainer() {
|
|
MOZ_COUNT_DTOR(nsDisplayBlendContainer);
|
|
}
|
|
#endif
|
|
|
|
// nsDisplayBlendContainer uses layers for rendering
|
|
already_AddRefed<Layer>
|
|
nsDisplayBlendContainer::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters) {
|
|
// turn off anti-aliasing in the parent stacking context because it changes
|
|
// how the group is initialized.
|
|
ContainerLayerParameters newContainerParameters = aContainerParameters;
|
|
newContainerParameters.mDisableSubpixelAntialiasingInDescendants = true;
|
|
|
|
RefPtr<Layer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, &mList,
|
|
newContainerParameters, nullptr);
|
|
if (!container) {
|
|
return nullptr;
|
|
}
|
|
|
|
container->SetForceIsolatedGroup(true);
|
|
return container.forget();
|
|
}
|
|
|
|
LayerState
|
|
nsDisplayBlendContainer::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
if (mCanBeActive && aManager->SupportsMixBlendModes(mContainedBlendModes)) {
|
|
return mozilla::LAYER_ACTIVE;
|
|
}
|
|
return mozilla::LAYER_INACTIVE;
|
|
}
|
|
|
|
bool nsDisplayBlendContainer::TryMerge(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem) {
|
|
if (aItem->GetType() != TYPE_BLEND_CONTAINER)
|
|
return false;
|
|
// items for the same content element should be merged into a single
|
|
// compositing group
|
|
// aItem->GetUnderlyingFrame() returns non-null because it's nsDisplayOpacity
|
|
if (aItem->Frame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
if (aItem->GetClip() != GetClip())
|
|
return false;
|
|
MergeFromTrackingMergedFrames(static_cast<nsDisplayBlendContainer*>(aItem));
|
|
return true;
|
|
}
|
|
|
|
nsDisplayOwnLayer::nsDisplayOwnLayer(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
uint32_t aFlags, ViewID aScrollTarget,
|
|
float aScrollbarThumbRatio)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList)
|
|
, mFlags(aFlags)
|
|
, mScrollTarget(aScrollTarget)
|
|
, mScrollbarThumbRatio(aScrollbarThumbRatio)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayOwnLayer);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayOwnLayer::~nsDisplayOwnLayer() {
|
|
MOZ_COUNT_DTOR(nsDisplayOwnLayer);
|
|
}
|
|
#endif
|
|
|
|
// nsDisplayOpacity uses layers for rendering
|
|
already_AddRefed<Layer>
|
|
nsDisplayOwnLayer::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
RefPtr<ContainerLayer> layer = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, &mList,
|
|
aContainerParameters, nullptr,
|
|
FrameLayerBuilder::CONTAINER_ALLOW_PULL_BACKGROUND_COLOR);
|
|
if (mFlags & VERTICAL_SCROLLBAR) {
|
|
layer->SetScrollbarData(mScrollTarget, Layer::ScrollDirection::VERTICAL, mScrollbarThumbRatio);
|
|
}
|
|
if (mFlags & HORIZONTAL_SCROLLBAR) {
|
|
layer->SetScrollbarData(mScrollTarget, Layer::ScrollDirection::HORIZONTAL, mScrollbarThumbRatio);
|
|
}
|
|
if (mFlags & SCROLLBAR_CONTAINER) {
|
|
layer->SetIsScrollbarContainer();
|
|
}
|
|
|
|
if (mFlags & GENERATE_SUBDOC_INVALIDATIONS) {
|
|
mFrame->PresContext()->SetNotifySubDocInvalidationData(layer);
|
|
}
|
|
return layer.forget();
|
|
}
|
|
|
|
nsDisplaySubDocument::nsDisplaySubDocument(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
uint32_t aFlags)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList, aFlags)
|
|
, mScrollParentId(aBuilder->GetCurrentScrollParentId())
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplaySubDocument);
|
|
mForceDispatchToContentRegion =
|
|
aBuilder->IsBuildingLayerEventRegions() &&
|
|
nsLayoutUtils::HasDocumentLevelListenersForApzAwareEvents(aFrame->PresContext()->PresShell());
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplaySubDocument::~nsDisplaySubDocument() {
|
|
MOZ_COUNT_DTOR(nsDisplaySubDocument);
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplaySubDocument::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters) {
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsIFrame* rootScrollFrame = presContext->PresShell()->GetRootScrollFrame();
|
|
ContainerLayerParameters params = aContainerParameters;
|
|
if ((mFlags & GENERATE_SCROLLABLE_LAYER) &&
|
|
rootScrollFrame->GetContent() &&
|
|
nsLayoutUtils::GetCriticalDisplayPort(rootScrollFrame->GetContent(), nullptr)) {
|
|
params.mInLowPrecisionDisplayPort = true;
|
|
}
|
|
|
|
RefPtr<Layer> layer = nsDisplayOwnLayer::BuildLayer(aBuilder, aManager, params);
|
|
layer->AsContainerLayer()->SetEventRegionsOverride(mForceDispatchToContentRegion
|
|
? EventRegionsOverride::ForceDispatchToContent
|
|
: EventRegionsOverride::NoOverride);
|
|
return layer.forget();
|
|
}
|
|
|
|
UniquePtr<FrameMetrics>
|
|
nsDisplaySubDocument::ComputeFrameMetrics(Layer* aLayer,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
if (!(mFlags & GENERATE_SCROLLABLE_LAYER)) {
|
|
return UniquePtr<FrameMetrics>(nullptr);
|
|
}
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsIFrame* rootScrollFrame = presContext->PresShell()->GetRootScrollFrame();
|
|
bool isRootContentDocument = presContext->IsRootContentDocument();
|
|
nsIPresShell* presShell = presContext->PresShell();
|
|
ContainerLayerParameters params(
|
|
aContainerParameters.mXScale * presShell->GetResolution(),
|
|
aContainerParameters.mYScale * presShell->GetResolution(),
|
|
nsIntPoint(), aContainerParameters);
|
|
if ((mFlags & GENERATE_SCROLLABLE_LAYER) &&
|
|
rootScrollFrame->GetContent() &&
|
|
nsLayoutUtils::GetCriticalDisplayPort(rootScrollFrame->GetContent(), nullptr)) {
|
|
params.mInLowPrecisionDisplayPort = true;
|
|
}
|
|
|
|
nsRect viewport = mFrame->GetRect() -
|
|
mFrame->GetPosition() +
|
|
mFrame->GetOffsetToCrossDoc(ReferenceFrame());
|
|
|
|
return MakeUnique<FrameMetrics>(
|
|
nsLayoutUtils::ComputeFrameMetrics(
|
|
mFrame, rootScrollFrame, rootScrollFrame->GetContent(), ReferenceFrame(),
|
|
aLayer, mScrollParentId, viewport, Nothing(),
|
|
isRootContentDocument, params));
|
|
}
|
|
|
|
static bool
|
|
UseDisplayPortForViewport(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsRect* aDisplayPort = nullptr)
|
|
{
|
|
return aBuilder->IsPaintingToWindow() &&
|
|
nsLayoutUtils::ViewportHasDisplayPort(aFrame->PresContext(), aDisplayPort);
|
|
}
|
|
|
|
nsRect
|
|
nsDisplaySubDocument::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
bool usingDisplayPort = UseDisplayPortForViewport(aBuilder, mFrame);
|
|
|
|
if ((mFlags & GENERATE_SCROLLABLE_LAYER) && usingDisplayPort) {
|
|
*aSnap = false;
|
|
return mFrame->GetRect() + aBuilder->ToReferenceFrame(mFrame);
|
|
}
|
|
|
|
return nsDisplayOwnLayer::GetBounds(aBuilder, aSnap);
|
|
}
|
|
|
|
bool
|
|
nsDisplaySubDocument::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion)
|
|
{
|
|
nsRect displayport;
|
|
bool usingDisplayPort = UseDisplayPortForViewport(aBuilder, mFrame, &displayport);
|
|
|
|
if (!(mFlags & GENERATE_SCROLLABLE_LAYER) || !usingDisplayPort) {
|
|
return nsDisplayWrapList::ComputeVisibility(aBuilder, aVisibleRegion);
|
|
}
|
|
|
|
nsRegion childVisibleRegion;
|
|
// The visible region for the children may be much bigger than the hole we
|
|
// are viewing the children from, so that the compositor process has enough
|
|
// content to asynchronously pan while content is being refreshed.
|
|
childVisibleRegion = displayport + mFrame->GetOffsetToCrossDoc(ReferenceFrame());
|
|
|
|
nsRect boundedRect =
|
|
childVisibleRegion.GetBounds().Intersect(mList.GetBounds(aBuilder));
|
|
bool visible = mList.ComputeVisibilityForSublist(
|
|
aBuilder, &childVisibleRegion, boundedRect,
|
|
usingDisplayPort ? mFrame : nullptr);
|
|
|
|
// If APZ is enabled then don't allow this computation to influence
|
|
// aVisibleRegion, on the assumption that the layer can be asynchronously
|
|
// scrolled so we'll definitely need all the content under it.
|
|
if (!nsLayoutUtils::UsesAsyncScrolling(mFrame)) {
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
nsRegion removed;
|
|
removed.Sub(bounds, childVisibleRegion);
|
|
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, removed);
|
|
}
|
|
|
|
return visible;
|
|
}
|
|
|
|
bool
|
|
nsDisplaySubDocument::ShouldBuildLayerEvenIfInvisible(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
bool usingDisplayPort = UseDisplayPortForViewport(aBuilder, mFrame);
|
|
|
|
if ((mFlags & GENERATE_SCROLLABLE_LAYER) && usingDisplayPort) {
|
|
return true;
|
|
}
|
|
|
|
return nsDisplayOwnLayer::ShouldBuildLayerEvenIfInvisible(aBuilder);
|
|
}
|
|
|
|
nsRegion
|
|
nsDisplaySubDocument::GetOpaqueRegion(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
bool usingDisplayPort = UseDisplayPortForViewport(aBuilder, mFrame);
|
|
|
|
if ((mFlags & GENERATE_SCROLLABLE_LAYER) && usingDisplayPort) {
|
|
*aSnap = false;
|
|
return nsRegion();
|
|
}
|
|
|
|
return nsDisplayOwnLayer::GetOpaqueRegion(aBuilder, aSnap);
|
|
}
|
|
|
|
nsDisplayResolution::nsDisplayResolution(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
uint32_t aFlags)
|
|
: nsDisplaySubDocument(aBuilder, aFrame, aList, aFlags) {
|
|
MOZ_COUNT_CTOR(nsDisplayResolution);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayResolution::~nsDisplayResolution() {
|
|
MOZ_COUNT_DTOR(nsDisplayResolution);
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayResolution::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters) {
|
|
nsIPresShell* presShell = mFrame->PresContext()->PresShell();
|
|
ContainerLayerParameters containerParameters(
|
|
presShell->GetResolution(), presShell->GetResolution(), nsIntPoint(),
|
|
aContainerParameters);
|
|
|
|
RefPtr<Layer> layer = nsDisplaySubDocument::BuildLayer(
|
|
aBuilder, aManager, containerParameters);
|
|
layer->SetPostScale(1.0f / presShell->GetResolution(),
|
|
1.0f / presShell->GetResolution());
|
|
layer->AsContainerLayer()->SetScaleToResolution(
|
|
presShell->ScaleToResolution(), presShell->GetResolution());
|
|
return layer.forget();
|
|
}
|
|
|
|
nsDisplayStickyPosition::nsDisplayStickyPosition(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsDisplayList* aList)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayStickyPosition);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayStickyPosition::~nsDisplayStickyPosition() {
|
|
MOZ_COUNT_DTOR(nsDisplayStickyPosition);
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayStickyPosition::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters) {
|
|
RefPtr<Layer> layer =
|
|
nsDisplayOwnLayer::BuildLayer(aBuilder, aManager, aContainerParameters);
|
|
|
|
StickyScrollContainer* stickyScrollContainer = StickyScrollContainer::
|
|
GetStickyScrollContainerForFrame(mFrame);
|
|
if (!stickyScrollContainer) {
|
|
return layer.forget();
|
|
}
|
|
|
|
nsIFrame* scrollFrame = do_QueryFrame(stickyScrollContainer->ScrollFrame());
|
|
nsPresContext* presContext = scrollFrame->PresContext();
|
|
|
|
// Sticky position frames whose scroll frame is the root scroll frame are
|
|
// reflowed into the scroll-port size if one has been set.
|
|
nsSize scrollFrameSize = scrollFrame->GetSize();
|
|
if (scrollFrame == presContext->PresShell()->GetRootScrollFrame() &&
|
|
presContext->PresShell()->IsScrollPositionClampingScrollPortSizeSet()) {
|
|
scrollFrameSize = presContext->PresShell()->
|
|
GetScrollPositionClampingScrollPortSize();
|
|
}
|
|
|
|
nsLayoutUtils::SetFixedPositionLayerData(layer, scrollFrame,
|
|
nsRect(scrollFrame->GetOffsetToCrossDoc(ReferenceFrame()), scrollFrameSize),
|
|
mFrame, presContext, aContainerParameters, /* clip is fixed = */ true);
|
|
|
|
ViewID scrollId = nsLayoutUtils::FindOrCreateIDFor(
|
|
stickyScrollContainer->ScrollFrame()->GetScrolledFrame()->GetContent());
|
|
|
|
float factor = presContext->AppUnitsPerDevPixel();
|
|
nsRect outer;
|
|
nsRect inner;
|
|
stickyScrollContainer->GetScrollRanges(mFrame, &outer, &inner);
|
|
LayerRect stickyOuter(NSAppUnitsToFloatPixels(outer.x, factor) *
|
|
aContainerParameters.mXScale,
|
|
NSAppUnitsToFloatPixels(outer.y, factor) *
|
|
aContainerParameters.mYScale,
|
|
NSAppUnitsToFloatPixels(outer.width, factor) *
|
|
aContainerParameters.mXScale,
|
|
NSAppUnitsToFloatPixels(outer.height, factor) *
|
|
aContainerParameters.mYScale);
|
|
LayerRect stickyInner(NSAppUnitsToFloatPixels(inner.x, factor) *
|
|
aContainerParameters.mXScale,
|
|
NSAppUnitsToFloatPixels(inner.y, factor) *
|
|
aContainerParameters.mYScale,
|
|
NSAppUnitsToFloatPixels(inner.width, factor) *
|
|
aContainerParameters.mXScale,
|
|
NSAppUnitsToFloatPixels(inner.height, factor) *
|
|
aContainerParameters.mYScale);
|
|
layer->SetStickyPositionData(scrollId, stickyOuter, stickyInner);
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
bool nsDisplayStickyPosition::TryMerge(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem) {
|
|
if (aItem->GetType() != TYPE_STICKY_POSITION)
|
|
return false;
|
|
// Items with the same fixed position frame can be merged.
|
|
nsDisplayStickyPosition* other = static_cast<nsDisplayStickyPosition*>(aItem);
|
|
if (other->mFrame != mFrame)
|
|
return false;
|
|
if (aItem->GetClip() != GetClip())
|
|
return false;
|
|
MergeFromTrackingMergedFrames(other);
|
|
return true;
|
|
}
|
|
|
|
nsDisplayScrollInfoLayer::nsDisplayScrollInfoLayer(
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aScrolledFrame,
|
|
nsIFrame* aScrollFrame)
|
|
: nsDisplayWrapList(aBuilder, aScrollFrame)
|
|
, mScrollFrame(aScrollFrame)
|
|
, mScrolledFrame(aScrolledFrame)
|
|
, mScrollParentId(aBuilder->GetCurrentScrollParentId())
|
|
, mIgnoreIfCompositorSupportsBlending(false)
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_CTOR(nsDisplayScrollInfoLayer);
|
|
#endif
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayScrollInfoLayer::~nsDisplayScrollInfoLayer()
|
|
{
|
|
MOZ_COUNT_DTOR(nsDisplayScrollInfoLayer);
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayScrollInfoLayer::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
// In general for APZ with event-regions we no longer have a need for
|
|
// scrollinfo layers. However, in some cases, there might be content that
|
|
// cannot be layerized, and so needs to scroll synchronously. To handle those
|
|
// cases, we still want to generate scrollinfo layers.
|
|
|
|
if (mIgnoreIfCompositorSupportsBlending) {
|
|
// This item was created pessimistically because, during display list
|
|
// building, we encountered a mix blend mode. If our layer manager
|
|
// supports compositing this mix blend mode, we don't actually need to
|
|
// create a scroll info layer.
|
|
if (aManager->SupportsMixBlendModes(mContainedBlendModes)) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
ContainerLayerParameters params = aContainerParameters;
|
|
if (mScrolledFrame->GetContent() &&
|
|
nsLayoutUtils::GetCriticalDisplayPort(mScrolledFrame->GetContent(), nullptr)) {
|
|
params.mInLowPrecisionDisplayPort = true;
|
|
}
|
|
|
|
return aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, &mList,
|
|
params, nullptr,
|
|
FrameLayerBuilder::CONTAINER_ALLOW_PULL_BACKGROUND_COLOR);
|
|
}
|
|
|
|
LayerState
|
|
nsDisplayScrollInfoLayer::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
return LAYER_ACTIVE_EMPTY;
|
|
}
|
|
|
|
UniquePtr<FrameMetrics>
|
|
nsDisplayScrollInfoLayer::ComputeFrameMetrics(Layer* aLayer,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
ContainerLayerParameters params = aContainerParameters;
|
|
if (mScrolledFrame->GetContent() &&
|
|
nsLayoutUtils::GetCriticalDisplayPort(mScrolledFrame->GetContent(), nullptr)) {
|
|
params.mInLowPrecisionDisplayPort = true;
|
|
}
|
|
|
|
nsRect viewport = mScrollFrame->GetRect() -
|
|
mScrollFrame->GetPosition() +
|
|
mScrollFrame->GetOffsetToCrossDoc(ReferenceFrame());
|
|
|
|
return UniquePtr<FrameMetrics>(new FrameMetrics(
|
|
nsLayoutUtils::ComputeFrameMetrics(
|
|
mScrolledFrame, mScrollFrame, mScrollFrame->GetContent(),
|
|
ReferenceFrame(), aLayer,
|
|
mScrollParentId, viewport, Nothing(), false, params)));
|
|
}
|
|
|
|
void
|
|
nsDisplayScrollInfoLayer::IgnoreIfCompositorSupportsBlending(BlendModeSet aBlendModes)
|
|
{
|
|
mContainedBlendModes += aBlendModes;
|
|
mIgnoreIfCompositorSupportsBlending = true;
|
|
}
|
|
|
|
void
|
|
nsDisplayScrollInfoLayer::UnsetIgnoreIfCompositorSupportsBlending()
|
|
{
|
|
mIgnoreIfCompositorSupportsBlending = false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayScrollInfoLayer::ContainedInMixBlendMode() const
|
|
{
|
|
return mIgnoreIfCompositorSupportsBlending;
|
|
}
|
|
|
|
void
|
|
nsDisplayScrollInfoLayer::WriteDebugInfo(std::stringstream& aStream)
|
|
{
|
|
aStream << " (scrollframe " << mScrollFrame
|
|
<< " scrolledFrame " << mScrolledFrame << ")";
|
|
}
|
|
|
|
nsDisplayZoom::nsDisplayZoom(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
int32_t aAPD, int32_t aParentAPD,
|
|
uint32_t aFlags)
|
|
: nsDisplaySubDocument(aBuilder, aFrame, aList, aFlags)
|
|
, mAPD(aAPD), mParentAPD(aParentAPD) {
|
|
MOZ_COUNT_CTOR(nsDisplayZoom);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayZoom::~nsDisplayZoom() {
|
|
MOZ_COUNT_DTOR(nsDisplayZoom);
|
|
}
|
|
#endif
|
|
|
|
nsRect nsDisplayZoom::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
nsRect bounds = nsDisplaySubDocument::GetBounds(aBuilder, aSnap);
|
|
*aSnap = false;
|
|
return bounds.ScaleToOtherAppUnitsRoundOut(mAPD, mParentAPD);
|
|
}
|
|
|
|
void nsDisplayZoom::HitTest(nsDisplayListBuilder *aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState *aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
nsRect rect;
|
|
// A 1x1 rect indicates we are just hit testing a point, so pass down a 1x1
|
|
// rect as well instead of possibly rounding the width or height to zero.
|
|
if (aRect.width == 1 && aRect.height == 1) {
|
|
rect.MoveTo(aRect.TopLeft().ScaleToOtherAppUnits(mParentAPD, mAPD));
|
|
rect.width = rect.height = 1;
|
|
} else {
|
|
rect = aRect.ScaleToOtherAppUnitsRoundOut(mParentAPD, mAPD);
|
|
}
|
|
mList.HitTest(aBuilder, rect, aState, aOutFrames);
|
|
}
|
|
|
|
bool nsDisplayZoom::ComputeVisibility(nsDisplayListBuilder *aBuilder,
|
|
nsRegion *aVisibleRegion)
|
|
{
|
|
// Convert the passed in visible region to our appunits.
|
|
nsRegion visibleRegion;
|
|
// mVisibleRect has been clipped to GetClippedBounds
|
|
visibleRegion.And(*aVisibleRegion, mVisibleRect);
|
|
visibleRegion = visibleRegion.ScaleToOtherAppUnitsRoundOut(mParentAPD, mAPD);
|
|
nsRegion originalVisibleRegion = visibleRegion;
|
|
|
|
nsRect transformedVisibleRect =
|
|
mVisibleRect.ScaleToOtherAppUnitsRoundOut(mParentAPD, mAPD);
|
|
bool retval;
|
|
// If we are to generate a scrollable layer we call
|
|
// nsDisplaySubDocument::ComputeVisibility to make the necessary adjustments
|
|
// for ComputeVisibility, it does all it's calculations in the child APD.
|
|
bool usingDisplayPort = UseDisplayPortForViewport(aBuilder, mFrame);
|
|
if (!(mFlags & GENERATE_SCROLLABLE_LAYER) || !usingDisplayPort) {
|
|
retval =
|
|
mList.ComputeVisibilityForSublist(aBuilder, &visibleRegion,
|
|
transformedVisibleRect);
|
|
} else {
|
|
retval =
|
|
nsDisplaySubDocument::ComputeVisibility(aBuilder, &visibleRegion);
|
|
}
|
|
|
|
nsRegion removed;
|
|
// removed = originalVisibleRegion - visibleRegion
|
|
removed.Sub(originalVisibleRegion, visibleRegion);
|
|
// Convert removed region to parent appunits.
|
|
removed = removed.ScaleToOtherAppUnitsRoundIn(mAPD, mParentAPD);
|
|
// aVisibleRegion = aVisibleRegion - removed (modulo any simplifications
|
|
// SubtractFromVisibleRegion does)
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, removed);
|
|
|
|
return retval;
|
|
}
|
|
|
|
///////////////////////////////////////////////////
|
|
// nsDisplayTransform Implementation
|
|
//
|
|
|
|
// Write #define UNIFIED_CONTINUATIONS here and in
|
|
// TransformReferenceBox::Initialize to have the transform property try
|
|
// to transform content with continuations as one unified block instead of
|
|
// several smaller ones. This is currently disabled because it doesn't work
|
|
// correctly, since when the frames are initially being reflowed, their
|
|
// continuations all compute their bounding rects independently of each other
|
|
// and consequently get the wrong value. Write #define DEBUG_HIT here to have
|
|
// the nsDisplayTransform class dump out a bunch of information about hit
|
|
// detection.
|
|
#undef UNIFIED_CONTINUATIONS
|
|
#undef DEBUG_HIT
|
|
|
|
nsDisplayTransform::nsDisplayTransform(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame *aFrame, nsDisplayList *aList,
|
|
const nsRect& aChildrenVisibleRect,
|
|
ComputeTransformFunction aTransformGetter,
|
|
uint32_t aIndex)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mStoredList(aBuilder, aFrame, aList)
|
|
, mTransformGetter(aTransformGetter)
|
|
, mChildrenVisibleRect(aChildrenVisibleRect)
|
|
, mIndex(aIndex)
|
|
, mNoExtendContext(false)
|
|
, mIsTransformSeparator(false)
|
|
, mTransformPreserves3DInited(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayTransform);
|
|
MOZ_ASSERT(aFrame, "Must have a frame!");
|
|
Init(aBuilder);
|
|
}
|
|
|
|
void
|
|
nsDisplayTransform::SetReferenceFrameToAncestor(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (mFrame == aBuilder->RootReferenceFrame()) {
|
|
return;
|
|
}
|
|
nsIFrame *outerFrame = nsLayoutUtils::GetCrossDocParentFrame(mFrame);
|
|
mReferenceFrame =
|
|
aBuilder->FindReferenceFrameFor(outerFrame);
|
|
mToReferenceFrame = mFrame->GetOffsetToCrossDoc(mReferenceFrame);
|
|
mVisibleRect = aBuilder->GetDirtyRect() + mToReferenceFrame;
|
|
}
|
|
|
|
void
|
|
nsDisplayTransform::Init(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
mHasBounds = false;
|
|
mStoredList.SetClip(aBuilder, DisplayItemClip::NoClip());
|
|
mStoredList.SetVisibleRect(mChildrenVisibleRect);
|
|
mMaybePrerender = ShouldPrerenderTransformedContent(aBuilder, mFrame);
|
|
|
|
const nsStyleDisplay* disp = mFrame->StyleDisplay();
|
|
if ((disp->mWillChangeBitField & NS_STYLE_WILL_CHANGE_TRANSFORM)) {
|
|
// We will only pre-render if this will-change is on budget.
|
|
mMaybePrerender = true;
|
|
}
|
|
|
|
if (mMaybePrerender) {
|
|
bool snap;
|
|
mVisibleRect = GetBounds(aBuilder, &snap);
|
|
}
|
|
}
|
|
|
|
nsDisplayTransform::nsDisplayTransform(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame *aFrame, nsDisplayList *aList,
|
|
const nsRect& aChildrenVisibleRect,
|
|
uint32_t aIndex)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mStoredList(aBuilder, aFrame, aList)
|
|
, mTransformGetter(nullptr)
|
|
, mChildrenVisibleRect(aChildrenVisibleRect)
|
|
, mIndex(aIndex)
|
|
, mNoExtendContext(false)
|
|
, mIsTransformSeparator(false)
|
|
, mTransformPreserves3DInited(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayTransform);
|
|
MOZ_ASSERT(aFrame, "Must have a frame!");
|
|
SetReferenceFrameToAncestor(aBuilder);
|
|
Init(aBuilder);
|
|
UpdateBoundsFor3D(aBuilder);
|
|
}
|
|
|
|
nsDisplayTransform::nsDisplayTransform(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame *aFrame, nsDisplayItem *aItem,
|
|
const nsRect& aChildrenVisibleRect,
|
|
uint32_t aIndex)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mStoredList(aBuilder, aFrame, aItem)
|
|
, mTransformGetter(nullptr)
|
|
, mChildrenVisibleRect(aChildrenVisibleRect)
|
|
, mIndex(aIndex)
|
|
, mNoExtendContext(false)
|
|
, mIsTransformSeparator(false)
|
|
, mTransformPreserves3DInited(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayTransform);
|
|
MOZ_ASSERT(aFrame, "Must have a frame!");
|
|
SetReferenceFrameToAncestor(aBuilder);
|
|
Init(aBuilder);
|
|
}
|
|
|
|
nsDisplayTransform::nsDisplayTransform(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame *aFrame, nsDisplayList *aList,
|
|
const nsRect& aChildrenVisibleRect,
|
|
const Matrix4x4& aTransform,
|
|
uint32_t aIndex)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mStoredList(aBuilder, aFrame, aList)
|
|
, mTransform(aTransform)
|
|
, mTransformGetter(nullptr)
|
|
, mChildrenVisibleRect(aChildrenVisibleRect)
|
|
, mIndex(aIndex)
|
|
, mNoExtendContext(false)
|
|
, mIsTransformSeparator(true)
|
|
, mTransformPreserves3DInited(false)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayTransform);
|
|
MOZ_ASSERT(aFrame, "Must have a frame!");
|
|
Init(aBuilder);
|
|
UpdateBoundsFor3D(aBuilder);
|
|
}
|
|
|
|
/* Returns the delta specified by the transform-origin property.
|
|
* This is a positive delta, meaning that it indicates the direction to move
|
|
* to get from (0, 0) of the frame to the transform origin. This function is
|
|
* called off the main thread.
|
|
*/
|
|
/* static */ Point3D
|
|
nsDisplayTransform::GetDeltaToTransformOrigin(const nsIFrame* aFrame,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't get delta for a null frame!");
|
|
NS_PRECONDITION(aFrame->IsTransformed() ||
|
|
aFrame->StyleDisplay()->BackfaceIsHidden() ||
|
|
aFrame->Combines3DTransformWithAncestors(),
|
|
"Shouldn't get a delta for an untransformed frame!");
|
|
|
|
if (!aFrame->IsTransformed()) {
|
|
return Point3D();
|
|
}
|
|
|
|
/* For both of the coordinates, if the value of transform is a
|
|
* percentage, it's relative to the size of the frame. Otherwise, if it's
|
|
* a distance, it's already computed for us!
|
|
*/
|
|
const nsStyleDisplay* display = aFrame->StyleDisplay();
|
|
// We don't use aBoundsOverride for SVG since we need to account for
|
|
// refBox.X/Y(). This happens to work because ReflowSVG sets the frame's
|
|
// mRect before calling FinishAndStoreOverflow so we don't need the override.
|
|
TransformReferenceBox refBox;
|
|
if (aBoundsOverride &&
|
|
!(aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT)) {
|
|
refBox.Init(aBoundsOverride->Size());
|
|
} else {
|
|
refBox.Init(aFrame);
|
|
}
|
|
|
|
/* Allows us to access dimension getters by index. */
|
|
float coords[2];
|
|
TransformReferenceBox::DimensionGetter dimensionGetter[] =
|
|
{ &TransformReferenceBox::Width, &TransformReferenceBox::Height };
|
|
TransformReferenceBox::DimensionGetter offsetGetter[] =
|
|
{ &TransformReferenceBox::X, &TransformReferenceBox::Y };
|
|
|
|
for (uint8_t index = 0; index < 2; ++index) {
|
|
/* If the transform-origin specifies a percentage, take the percentage
|
|
* of the size of the box.
|
|
*/
|
|
const nsStyleCoord &coord = display->mTransformOrigin[index];
|
|
if (coord.GetUnit() == eStyleUnit_Calc) {
|
|
const nsStyleCoord::Calc *calc = coord.GetCalcValue();
|
|
coords[index] =
|
|
NSAppUnitsToFloatPixels((refBox.*dimensionGetter[index])(), aAppUnitsPerPixel) *
|
|
calc->mPercent +
|
|
NSAppUnitsToFloatPixels(calc->mLength, aAppUnitsPerPixel);
|
|
} else if (coord.GetUnit() == eStyleUnit_Percent) {
|
|
coords[index] =
|
|
NSAppUnitsToFloatPixels((refBox.*dimensionGetter[index])(), aAppUnitsPerPixel) *
|
|
coord.GetPercentValue();
|
|
} else {
|
|
MOZ_ASSERT(coord.GetUnit() == eStyleUnit_Coord, "unexpected unit");
|
|
coords[index] =
|
|
NSAppUnitsToFloatPixels(coord.GetCoordValue(), aAppUnitsPerPixel);
|
|
}
|
|
|
|
if (aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT) {
|
|
// SVG frames (unlike other frames) have a reference box that can be (and
|
|
// typically is) offset from the TopLeft() of the frame. We need to
|
|
// account for that here.
|
|
coords[index] +=
|
|
NSAppUnitsToFloatPixels((refBox.*offsetGetter[index])(), aAppUnitsPerPixel);
|
|
}
|
|
}
|
|
|
|
return Point3D(coords[0], coords[1],
|
|
NSAppUnitsToFloatPixels(display->mTransformOrigin[2].GetCoordValue(),
|
|
aAppUnitsPerPixel));
|
|
}
|
|
|
|
/* Returns the delta specified by the -moz-perspective-origin property.
|
|
* This is a positive delta, meaning that it indicates the direction to move
|
|
* to get from (0, 0) of the frame to the perspective origin. This function is
|
|
* called off the main thread.
|
|
*/
|
|
/* static */ Point3D
|
|
nsDisplayTransform::GetDeltaToPerspectiveOrigin(const nsIFrame* aFrame,
|
|
float aAppUnitsPerPixel)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't get delta for a null frame!");
|
|
NS_PRECONDITION(aFrame->IsTransformed() ||
|
|
aFrame->StyleDisplay()->BackfaceIsHidden() ||
|
|
aFrame->Combines3DTransformWithAncestors(),
|
|
"Shouldn't get a delta for an untransformed frame!");
|
|
|
|
if (!aFrame->IsTransformed()) {
|
|
return Point3D();
|
|
}
|
|
|
|
/* For both of the coordinates, if the value of -moz-perspective-origin is a
|
|
* percentage, it's relative to the size of the frame. Otherwise, if it's
|
|
* a distance, it's already computed for us!
|
|
*/
|
|
|
|
//TODO: Should this be using our bounds or the parent's bounds?
|
|
// How do we handle aBoundsOverride in the latter case?
|
|
nsIFrame* cbFrame = aFrame->GetContainingBlock(nsIFrame::SKIP_SCROLLED_FRAME);
|
|
if (!cbFrame) {
|
|
return Point3D();
|
|
}
|
|
const nsStyleDisplay* display = cbFrame->StyleDisplay();
|
|
TransformReferenceBox refBox(cbFrame);
|
|
|
|
/* Allows us to access named variables by index. */
|
|
Point3D result;
|
|
result.z = 0.0f;
|
|
gfx::Float* coords[2] = {&result.x, &result.y};
|
|
TransformReferenceBox::DimensionGetter dimensionGetter[] =
|
|
{ &TransformReferenceBox::Width, &TransformReferenceBox::Height };
|
|
|
|
for (uint8_t index = 0; index < 2; ++index) {
|
|
/* If the transform-origin specifies a percentage, take the percentage
|
|
* of the size of the box.
|
|
*/
|
|
const nsStyleCoord &coord = display->mPerspectiveOrigin[index];
|
|
if (coord.GetUnit() == eStyleUnit_Calc) {
|
|
const nsStyleCoord::Calc *calc = coord.GetCalcValue();
|
|
*coords[index] =
|
|
NSAppUnitsToFloatPixels((refBox.*dimensionGetter[index])(), aAppUnitsPerPixel) *
|
|
calc->mPercent +
|
|
NSAppUnitsToFloatPixels(calc->mLength, aAppUnitsPerPixel);
|
|
} else if (coord.GetUnit() == eStyleUnit_Percent) {
|
|
*coords[index] =
|
|
NSAppUnitsToFloatPixels((refBox.*dimensionGetter[index])(), aAppUnitsPerPixel) *
|
|
coord.GetPercentValue();
|
|
} else {
|
|
MOZ_ASSERT(coord.GetUnit() == eStyleUnit_Coord, "unexpected unit");
|
|
*coords[index] =
|
|
NSAppUnitsToFloatPixels(coord.GetCoordValue(), aAppUnitsPerPixel);
|
|
}
|
|
}
|
|
|
|
nsPoint parentOffset = aFrame->GetOffsetTo(cbFrame);
|
|
Point3D gfxOffset(
|
|
NSAppUnitsToFloatPixels(parentOffset.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(parentOffset.y, aAppUnitsPerPixel),
|
|
0.0f);
|
|
|
|
return result - gfxOffset;
|
|
}
|
|
|
|
nsDisplayTransform::FrameTransformProperties::FrameTransformProperties(const nsIFrame* aFrame,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride)
|
|
: mFrame(aFrame)
|
|
, mTransformList(aFrame->StyleDisplay()->mSpecifiedTransform)
|
|
, mToTransformOrigin(GetDeltaToTransformOrigin(aFrame, aAppUnitsPerPixel, aBoundsOverride))
|
|
, mChildPerspective(0)
|
|
{
|
|
nsIFrame* cbFrame = aFrame->GetContainingBlock(nsIFrame::SKIP_SCROLLED_FRAME);
|
|
if (cbFrame) {
|
|
const nsStyleDisplay* display = cbFrame->StyleDisplay();
|
|
if (display->mChildPerspective.GetUnit() == eStyleUnit_Coord) {
|
|
mChildPerspective = display->mChildPerspective.GetCoordValue();
|
|
// Calling GetDeltaToPerspectiveOrigin can be expensive, so we avoid
|
|
// calling it unnecessarily.
|
|
if (mChildPerspective > 0.0) {
|
|
mToPerspectiveOrigin = GetDeltaToPerspectiveOrigin(aFrame, aAppUnitsPerPixel);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Wraps up the transform matrix in a change-of-basis matrix pair that
|
|
* translates from local coordinate space to transform coordinate space, then
|
|
* hands it back.
|
|
*/
|
|
Matrix4x4
|
|
nsDisplayTransform::GetResultingTransformMatrix(const FrameTransformProperties& aProperties,
|
|
const nsPoint& aOrigin,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride,
|
|
nsIFrame** aOutAncestor)
|
|
{
|
|
return GetResultingTransformMatrixInternal(aProperties, aOrigin, aAppUnitsPerPixel,
|
|
aBoundsOverride, aOutAncestor, false, false);
|
|
}
|
|
|
|
Matrix4x4
|
|
nsDisplayTransform::GetResultingTransformMatrix(const nsIFrame* aFrame,
|
|
const nsPoint& aOrigin,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride,
|
|
nsIFrame** aOutAncestor,
|
|
bool aOffsetByOrigin)
|
|
{
|
|
FrameTransformProperties props(aFrame,
|
|
aAppUnitsPerPixel,
|
|
aBoundsOverride);
|
|
|
|
return GetResultingTransformMatrixInternal(props, aOrigin, aAppUnitsPerPixel,
|
|
aBoundsOverride, aOutAncestor,
|
|
aOffsetByOrigin, false);
|
|
}
|
|
|
|
Matrix4x4
|
|
nsDisplayTransform::GetResultingTransformMatrixP3D(const nsIFrame* aFrame,
|
|
const nsPoint& aOrigin,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride,
|
|
nsIFrame** aOutAncestor,
|
|
bool aOffsetByOrigin)
|
|
{
|
|
FrameTransformProperties props(aFrame,
|
|
aAppUnitsPerPixel,
|
|
aBoundsOverride);
|
|
|
|
return GetResultingTransformMatrixInternal(props, aOrigin, aAppUnitsPerPixel,
|
|
aBoundsOverride, aOutAncestor,
|
|
aOffsetByOrigin, true);
|
|
}
|
|
|
|
Matrix4x4
|
|
nsDisplayTransform::GetResultingTransformMatrixInternal(const FrameTransformProperties& aProperties,
|
|
const nsPoint& aOrigin,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride,
|
|
nsIFrame** aOutAncestor,
|
|
bool aOffsetByOrigin,
|
|
bool aDoPreserves3D)
|
|
{
|
|
const nsIFrame *frame = aProperties.mFrame;
|
|
|
|
if (aOutAncestor) {
|
|
*aOutAncestor = nsLayoutUtils::GetCrossDocParentFrame(frame);
|
|
}
|
|
|
|
// Get the underlying transform matrix:
|
|
|
|
// We don't use aBoundsOverride for SVG since we need to account for
|
|
// refBox.X/Y(). This happens to work because ReflowSVG sets the frame's
|
|
// mRect before calling FinishAndStoreOverflow so we don't need the override.
|
|
TransformReferenceBox refBox;
|
|
if (aBoundsOverride &&
|
|
(!frame || !(frame->GetStateBits() & NS_FRAME_SVG_LAYOUT))) {
|
|
refBox.Init(aBoundsOverride->Size());
|
|
} else {
|
|
refBox.Init(frame);
|
|
}
|
|
|
|
/* Get the matrix, then change its basis to factor in the origin. */
|
|
RuleNodeCacheConditions dummy;
|
|
Matrix4x4 result;
|
|
// Call IsSVGTransformed() regardless of the value of
|
|
// disp->mSpecifiedTransform, since we still need any transformFromSVGParent.
|
|
Matrix svgTransform, transformFromSVGParent;
|
|
bool hasSVGTransforms =
|
|
frame && frame->IsSVGTransformed(&svgTransform, &transformFromSVGParent);
|
|
bool hasTransformFromSVGParent =
|
|
hasSVGTransforms && !transformFromSVGParent.IsIdentity();
|
|
/* Transformed frames always have a transform, or are preserving 3d (and might still have perspective!) */
|
|
if (aProperties.mTransformList) {
|
|
result = nsStyleTransformMatrix::ReadTransforms(aProperties.mTransformList->mHead,
|
|
frame ? frame->StyleContext() : nullptr,
|
|
frame ? frame->PresContext() : nullptr,
|
|
dummy, refBox, aAppUnitsPerPixel);
|
|
} else if (hasSVGTransforms) {
|
|
// Correct the translation components for zoom:
|
|
float pixelsPerCSSPx = frame->PresContext()->AppUnitsPerCSSPixel() /
|
|
aAppUnitsPerPixel;
|
|
svgTransform._31 *= pixelsPerCSSPx;
|
|
svgTransform._32 *= pixelsPerCSSPx;
|
|
result = Matrix4x4::From2D(svgTransform);
|
|
}
|
|
|
|
/* Account for the transform-origin property by translating the
|
|
* coordinate space to the new origin.
|
|
*/
|
|
Point3D newOrigin =
|
|
Point3D(NSAppUnitsToFloatPixels(aOrigin.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aOrigin.y, aAppUnitsPerPixel),
|
|
0.0f);
|
|
Point3D roundedOrigin(hasSVGTransforms ? newOrigin.x : NS_round(newOrigin.x),
|
|
hasSVGTransforms ? newOrigin.y : NS_round(newOrigin.y),
|
|
0);
|
|
|
|
bool hasPerspective = aProperties.mChildPerspective > 0.0;
|
|
|
|
if (!hasSVGTransforms || !hasTransformFromSVGParent) {
|
|
// This is a simplification of the following |else| block, the
|
|
// simplification being possible because we don't need to apply
|
|
// mToTransformOrigin between two transforms.
|
|
Point3D offsets = roundedOrigin + aProperties.mToTransformOrigin;
|
|
if (aOffsetByOrigin &&
|
|
!hasPerspective) {
|
|
// We can fold the final translation by roundedOrigin into the first matrix
|
|
// basis change translation. This is more stable against variation due to
|
|
// insufficient floating point precision than reversing the translation
|
|
// afterwards.
|
|
result.PreTranslate(-aProperties.mToTransformOrigin);
|
|
result.PostTranslate(offsets);
|
|
} else {
|
|
result.ChangeBasis(offsets);
|
|
}
|
|
} else {
|
|
Point3D refBoxOffset(NSAppUnitsToFloatPixels(refBox.X(), aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(refBox.Y(), aAppUnitsPerPixel),
|
|
0);
|
|
// We have both a transform and children-only transform. The
|
|
// 'transform-origin' must apply between the two, so we need to apply it
|
|
// now before we apply transformFromSVGParent. Since mToTransformOrigin is
|
|
// relative to the frame's TopLeft(), we need to convert it to SVG user
|
|
// space by subtracting refBoxOffset. (Then after applying
|
|
// transformFromSVGParent we have to reapply refBoxOffset below.)
|
|
result.ChangeBasis(aProperties.mToTransformOrigin - refBoxOffset);
|
|
|
|
// Now apply the children-only transforms, converting the translation
|
|
// components to device pixels:
|
|
float pixelsPerCSSPx =
|
|
frame->PresContext()->AppUnitsPerCSSPixel() / aAppUnitsPerPixel;
|
|
transformFromSVGParent._31 *= pixelsPerCSSPx;
|
|
transformFromSVGParent._32 *= pixelsPerCSSPx;
|
|
result = result * Matrix4x4::From2D(transformFromSVGParent);
|
|
|
|
// Similar to the code in the |if| block above, but since we've accounted
|
|
// for mToTransformOrigin so we don't include that. We also need to reapply
|
|
// refBoxOffset.
|
|
Point3D offsets = roundedOrigin + refBoxOffset;
|
|
if (aOffsetByOrigin &&
|
|
!hasPerspective) {
|
|
result.PreTranslate(-refBoxOffset);
|
|
result.PostTranslate(offsets);
|
|
} else {
|
|
result.ChangeBasis(offsets);
|
|
}
|
|
}
|
|
|
|
if (hasPerspective) {
|
|
Matrix4x4 perspective;
|
|
perspective._34 =
|
|
-1.0 / NSAppUnitsToFloatPixels(aProperties.mChildPerspective, aAppUnitsPerPixel);
|
|
|
|
perspective.ChangeBasis(aProperties.GetToPerspectiveOrigin() + roundedOrigin);
|
|
result = result * perspective;
|
|
|
|
if (aOffsetByOrigin) {
|
|
result.PreTranslate(roundedOrigin);
|
|
}
|
|
}
|
|
|
|
if (aDoPreserves3D && frame && frame->Combines3DTransformWithAncestors()) {
|
|
// Include the transform set on our parent
|
|
NS_ASSERTION(frame->GetParent() &&
|
|
frame->GetParent()->IsTransformed() &&
|
|
frame->GetParent()->Extend3DContext(),
|
|
"Preserve3D mismatch!");
|
|
FrameTransformProperties props(frame->GetParent(),
|
|
aAppUnitsPerPixel,
|
|
nullptr);
|
|
|
|
// If this frame isn't transformed (but we exist for backface-visibility),
|
|
// then we're not a reference frame so no offset to origin will be added. Our
|
|
// parent transform however *is* the reference frame, so we pass true for
|
|
// aOffsetByOrigin to convert into the correct coordinate space.
|
|
Matrix4x4 parent =
|
|
GetResultingTransformMatrixInternal(props,
|
|
aOrigin - frame->GetPosition(),
|
|
aAppUnitsPerPixel, nullptr,
|
|
aOutAncestor, !frame->IsTransformed(),
|
|
aDoPreserves3D);
|
|
result = result * parent;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsDisplayOpacity::CanUseAsyncAnimations(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (ActiveLayerTracker::IsStyleAnimated(aBuilder, mFrame, eCSSProperty_opacity)) {
|
|
return true;
|
|
}
|
|
|
|
if (nsLayoutUtils::IsAnimationLoggingEnabled()) {
|
|
nsCString message;
|
|
message.AppendLiteral("Performance warning: Async animation disabled because frame was not marked active for opacity animation");
|
|
AnimationCollection::LogAsyncAnimationFailure(message,
|
|
Frame()->GetContent());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayTransform::ShouldPrerender(nsDisplayListBuilder* aBuilder) {
|
|
if (!mMaybePrerender) {
|
|
return false;
|
|
}
|
|
|
|
if (ShouldPrerenderTransformedContent(aBuilder, mFrame)) {
|
|
return true;
|
|
}
|
|
|
|
const nsStyleDisplay* disp = mFrame->StyleDisplay();
|
|
if ((disp->mWillChangeBitField & NS_STYLE_WILL_CHANGE_TRANSFORM) &&
|
|
aBuilder->IsInWillChangeBudget(mFrame, mFrame->GetSize())) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayTransform::CanUseAsyncAnimations(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (mMaybePrerender) {
|
|
// TODO We need to make sure that if we use async animation we actually
|
|
// pre-render even if we're out of will change budget.
|
|
return true;
|
|
}
|
|
DebugOnly<bool> prerender = ShouldPrerenderTransformedContent(aBuilder, mFrame, true);
|
|
NS_ASSERTION(!prerender, "Something changed under us!");
|
|
return false;
|
|
}
|
|
|
|
/* static */ bool
|
|
nsDisplayTransform::ShouldPrerenderTransformedContent(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
bool aLogAnimations)
|
|
{
|
|
// Elements whose transform has been modified recently, or which
|
|
// have a compositor-animated transform, can be prerendered. An element
|
|
// might have only just had its transform animated in which case
|
|
// the ActiveLayerManager may not have been notified yet.
|
|
if (!ActiveLayerTracker::IsStyleMaybeAnimated(aFrame, eCSSProperty_transform) &&
|
|
!nsLayoutUtils::HasAnimationsForCompositor(aFrame, eCSSProperty_transform)) {
|
|
if (aLogAnimations) {
|
|
nsCString message;
|
|
message.AppendLiteral("Performance warning: Async animation disabled because frame was not marked active for transform animation");
|
|
AnimationCollection::LogAsyncAnimationFailure(message,
|
|
aFrame->GetContent());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsSize refSize = aBuilder->RootReferenceFrame()->GetSize();
|
|
// Only prerender if the transformed frame's size is <= the
|
|
// reference frame size (~viewport), allowing a 1/8th fuzz factor
|
|
// for shadows, borders, etc.
|
|
refSize += nsSize(refSize.width / 8, refSize.height / 8);
|
|
nsSize frameSize = aFrame->GetVisualOverflowRectRelativeToSelf().Size();
|
|
nscoord maxInAppUnits = nscoord_MAX;
|
|
if (frameSize <= refSize) {
|
|
maxInAppUnits = aFrame->PresContext()->DevPixelsToAppUnits(4096);
|
|
nsRect visual = aFrame->GetVisualOverflowRect();
|
|
if (visual.width <= maxInAppUnits && visual.height <= maxInAppUnits) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (aLogAnimations) {
|
|
nsRect visual = aFrame->GetVisualOverflowRect();
|
|
|
|
nsCString message;
|
|
message.AppendLiteral("Performance warning: Async animation disabled because frame size (");
|
|
message.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(frameSize.width));
|
|
message.AppendLiteral(", ");
|
|
message.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(frameSize.height));
|
|
message.AppendLiteral(") is bigger than the viewport (");
|
|
message.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(refSize.width));
|
|
message.AppendLiteral(", ");
|
|
message.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(refSize.height));
|
|
message.AppendLiteral(") or the visual rectangle (");
|
|
message.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(visual.width));
|
|
message.AppendLiteral(", ");
|
|
message.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(visual.height));
|
|
message.AppendLiteral(") is larger than the max allowable value (");
|
|
message.AppendInt(nsPresContext::AppUnitsToIntCSSPixels(maxInAppUnits));
|
|
message.Append(')');
|
|
AnimationCollection::LogAsyncAnimationFailure(message,
|
|
aFrame->GetContent());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/* If the matrix is singular, or a hidden backface is shown, the frame won't be visible or hit. */
|
|
static bool IsFrameVisible(nsIFrame* aFrame, const Matrix4x4& aMatrix)
|
|
{
|
|
if (aMatrix.IsSingular()) {
|
|
return false;
|
|
}
|
|
if (aFrame->StyleDisplay()->mBackfaceVisibility == NS_STYLE_BACKFACE_VISIBILITY_HIDDEN &&
|
|
aMatrix.IsBackfaceVisible()) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
const Matrix4x4&
|
|
nsDisplayTransform::GetTransform()
|
|
{
|
|
if (mTransform.IsIdentity()) {
|
|
float scale = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Point3D newOrigin =
|
|
Point3D(NSAppUnitsToFloatPixels(mToReferenceFrame.x, scale),
|
|
NSAppUnitsToFloatPixels(mToReferenceFrame.y, scale),
|
|
0.0f);
|
|
if (mTransformGetter) {
|
|
mTransform = mTransformGetter(mFrame, scale);
|
|
mTransform.ChangeBasis(newOrigin.x, newOrigin.y, newOrigin.z);
|
|
} else if (!mIsTransformSeparator) {
|
|
bool isReference =
|
|
mFrame->IsTransformed() ||
|
|
mFrame->Combines3DTransformWithAncestors() || mFrame->Extend3DContext();
|
|
/**
|
|
* Passing true as the final argument means that we want to shift the
|
|
* coordinates to be relative to our reference frame instead of relative
|
|
* to this frame.
|
|
* When we have preserve-3d, our reference frame is already guaranteed
|
|
* to be an ancestor of the preserve-3d chain, so we only need to do
|
|
* this once.
|
|
* For preserve-3d leaf, itself is a refrence frame.
|
|
*/
|
|
mTransform = GetResultingTransformMatrix(mFrame, ToReferenceFrame(),
|
|
scale, nullptr, nullptr,
|
|
isReference);
|
|
}
|
|
}
|
|
return mTransform;
|
|
}
|
|
|
|
const Matrix4x4&
|
|
nsDisplayTransform::GetAccumulatedPreserved3DTransform()
|
|
{
|
|
// XXX: should go back to fix mTransformGetter.
|
|
if (!mTransformPreserves3DInited) {
|
|
mTransformPreserves3DInited = true;
|
|
if (!mFrame->Combines3DTransformWithAncestors()) {
|
|
mTransformPreserves3D = GetTransform();
|
|
return mTransformPreserves3D;
|
|
}
|
|
float scale = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
bool isReference =
|
|
mFrame->IsTransformed() ||
|
|
mFrame->Combines3DTransformWithAncestors() || mFrame->Extend3DContext();
|
|
mTransformPreserves3D =
|
|
GetResultingTransformMatrixP3D(mFrame, ToReferenceFrame(), scale,
|
|
nullptr, nullptr, isReference);
|
|
}
|
|
return mTransformPreserves3D;
|
|
}
|
|
|
|
bool
|
|
nsDisplayTransform::ShouldBuildLayerEvenIfInvisible(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
// The visible rect of a Preserves-3D frame is just an intermediate
|
|
// result. It should always build a layer to make sure it is
|
|
// rendering correctly.
|
|
return ShouldPrerender(aBuilder) || mFrame->Combines3DTransformWithAncestors();
|
|
}
|
|
|
|
already_AddRefed<Layer> nsDisplayTransform::BuildLayer(nsDisplayListBuilder *aBuilder,
|
|
LayerManager *aManager,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
/* For frames without transform, it would not be removed for
|
|
* backface hidden here. But, it would be removed by the init
|
|
* function of nsDisplayTransform.
|
|
*/
|
|
const Matrix4x4& newTransformMatrix = GetTransform();
|
|
|
|
uint32_t flags = ShouldPrerender(aBuilder) ?
|
|
FrameLayerBuilder::CONTAINER_NOT_CLIPPED_BY_ANCESTORS : 0;
|
|
flags |= FrameLayerBuilder::CONTAINER_ALLOW_PULL_BACKGROUND_COLOR;
|
|
RefPtr<ContainerLayer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, mStoredList.GetChildren(),
|
|
aContainerParameters, &newTransformMatrix, flags);
|
|
|
|
if (!container) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Add the preserve-3d flag for this layer, BuildContainerLayerFor clears all flags,
|
|
// so we never need to explicitely unset this flag.
|
|
if (mFrame->Extend3DContext() && !mNoExtendContext) {
|
|
container->SetContentFlags(container->GetContentFlags() | Layer::CONTENT_EXTEND_3D_CONTEXT);
|
|
} else {
|
|
container->SetContentFlags(container->GetContentFlags() & ~Layer::CONTENT_EXTEND_3D_CONTEXT);
|
|
}
|
|
|
|
nsDisplayListBuilder::AddAnimationsAndTransitionsToLayer(container, aBuilder,
|
|
this, mFrame,
|
|
eCSSProperty_transform);
|
|
if (ShouldPrerender(aBuilder)) {
|
|
container->SetUserData(nsIFrame::LayerIsPrerenderedDataKey(),
|
|
/*the value is irrelevant*/nullptr);
|
|
container->SetContentFlags(container->GetContentFlags() | Layer::CONTENT_MAY_CHANGE_TRANSFORM);
|
|
} else {
|
|
container->RemoveUserData(nsIFrame::LayerIsPrerenderedDataKey());
|
|
container->SetContentFlags(container->GetContentFlags() & ~Layer::CONTENT_MAY_CHANGE_TRANSFORM);
|
|
}
|
|
return container.forget();
|
|
}
|
|
|
|
nsDisplayItem::LayerState
|
|
nsDisplayTransform::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters) {
|
|
// If the transform is 3d, the layer takes part in preserve-3d
|
|
// sorting, or the layer is a separator then we *always* want this
|
|
// to be an active layer.
|
|
if (!GetTransform().Is2D() || mFrame->Combines3DTransformWithAncestors() ||
|
|
mIsTransformSeparator) {
|
|
return LAYER_ACTIVE_FORCE;
|
|
}
|
|
// Here we check if the *post-transform* bounds of this item are big enough
|
|
// to justify an active layer.
|
|
if (ActiveLayerTracker::IsStyleAnimated(aBuilder, mFrame, eCSSProperty_transform) &&
|
|
!IsItemTooSmallForActiveLayer(this))
|
|
return LAYER_ACTIVE;
|
|
if (nsLayoutUtils::HasAnimationsForCompositor(mFrame, eCSSProperty_transform)) {
|
|
return LAYER_ACTIVE;
|
|
}
|
|
|
|
const nsStyleDisplay* disp = mFrame->StyleDisplay();
|
|
if ((disp->mWillChangeBitField & NS_STYLE_WILL_CHANGE_TRANSFORM)) {
|
|
return LAYER_ACTIVE;
|
|
}
|
|
|
|
// Expect the child display items to have this frame as their animated
|
|
// geometry root (since it will be their reference frame). If they have a
|
|
// different animated geometry root, we'll make this an active layer so the
|
|
// animation can be accelerated.
|
|
return RequiredLayerStateForChildren(aBuilder, aManager, aParameters,
|
|
*mStoredList.GetChildren(), Frame());
|
|
}
|
|
|
|
bool nsDisplayTransform::ComputeVisibility(nsDisplayListBuilder *aBuilder,
|
|
nsRegion *aVisibleRegion)
|
|
{
|
|
/* As we do this, we need to be sure to
|
|
* untransform the visible rect, since we want everything that's painting to
|
|
* think that it's painting in its original rectangular coordinate space.
|
|
* If we can't untransform, take the entire overflow rect */
|
|
nsRect untransformedVisibleRect;
|
|
if (ShouldPrerender(aBuilder) ||
|
|
!UntransformVisibleRect(aBuilder, &untransformedVisibleRect))
|
|
{
|
|
untransformedVisibleRect = mFrame->GetVisualOverflowRectRelativeToSelf();
|
|
}
|
|
nsRegion untransformedVisible = untransformedVisibleRect;
|
|
// Call RecomputeVisiblity instead of ComputeVisibility since
|
|
// nsDisplayItem::ComputeVisibility should only be called from
|
|
// nsDisplayList::ComputeVisibility (which sets mVisibleRect on the item)
|
|
mStoredList.RecomputeVisibility(aBuilder, &untransformedVisible);
|
|
return true;
|
|
}
|
|
|
|
#ifdef DEBUG_HIT
|
|
#include <time.h>
|
|
#endif
|
|
|
|
/* HitTest does some fun stuff with matrix transforms to obtain the answer. */
|
|
void nsDisplayTransform::HitTest(nsDisplayListBuilder *aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState *aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
/* Here's how this works:
|
|
* 1. Get the matrix. If it's singular, abort (clearly we didn't hit
|
|
* anything).
|
|
* 2. Invert the matrix.
|
|
* 3. Use it to transform the rect into the correct space.
|
|
* 4. Pass that rect down through to the list's version of HitTest.
|
|
*/
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Matrix4x4 matrix = GetTransform();
|
|
|
|
if (!IsFrameVisible(mFrame, GetAccumulatedPreserved3DTransform())) {
|
|
return;
|
|
}
|
|
|
|
/* We want to go from transformed-space to regular space.
|
|
* Thus we have to invert the matrix, which normally does
|
|
* the reverse operation (e.g. regular->transformed)
|
|
*/
|
|
|
|
/* Now, apply the transform and pass it down the channel. */
|
|
matrix.Invert();
|
|
nsRect resultingRect;
|
|
if (aRect.width == 1 && aRect.height == 1) {
|
|
// Magic width/height indicating we're hit testing a point, not a rect
|
|
Point4D point = matrix.ProjectPoint(Point(NSAppUnitsToFloatPixels(aRect.x, factor),
|
|
NSAppUnitsToFloatPixels(aRect.y, factor)));
|
|
if (!point.HasPositiveWCoord()) {
|
|
return;
|
|
}
|
|
|
|
Point point2d = point.As2DPoint();
|
|
|
|
resultingRect = nsRect(NSFloatPixelsToAppUnits(float(point2d.x), factor),
|
|
NSFloatPixelsToAppUnits(float(point2d.y), factor),
|
|
1, 1);
|
|
|
|
} else {
|
|
Rect originalRect(NSAppUnitsToFloatPixels(aRect.x, factor),
|
|
NSAppUnitsToFloatPixels(aRect.y, factor),
|
|
NSAppUnitsToFloatPixels(aRect.width, factor),
|
|
NSAppUnitsToFloatPixels(aRect.height, factor));
|
|
|
|
|
|
bool snap;
|
|
nsRect childBounds = mStoredList.GetBounds(aBuilder, &snap);
|
|
Rect childGfxBounds(NSAppUnitsToFloatPixels(childBounds.x, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.y, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.width, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.height, factor));
|
|
|
|
Rect rect = matrix.ProjectRectBounds(originalRect, childGfxBounds);
|
|
|
|
resultingRect = nsRect(NSFloatPixelsToAppUnits(float(rect.X()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Y()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Width()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Height()), factor));
|
|
}
|
|
|
|
if (resultingRect.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
|
|
#ifdef DEBUG_HIT
|
|
printf("Frame: %p\n", dynamic_cast<void *>(mFrame));
|
|
printf(" Untransformed point: (%f, %f)\n", resultingRect.X(), resultingRect.Y());
|
|
uint32_t originalFrameCount = aOutFrames.Length();
|
|
#endif
|
|
|
|
mStoredList.HitTest(aBuilder, resultingRect, aState, aOutFrames);
|
|
|
|
#ifdef DEBUG_HIT
|
|
if (originalFrameCount != aOutFrames.Length())
|
|
printf(" Hit! Time: %f, first frame: %p\n", static_cast<double>(clock()),
|
|
dynamic_cast<void *>(aOutFrames.ElementAt(0)));
|
|
printf("=== end of hit test ===\n");
|
|
#endif
|
|
|
|
}
|
|
|
|
float
|
|
nsDisplayTransform::GetHitDepthAtPoint(nsDisplayListBuilder* aBuilder, const nsPoint& aPoint)
|
|
{
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Matrix4x4 matrix = GetTransform();
|
|
|
|
NS_ASSERTION(IsFrameVisible(mFrame, GetAccumulatedPreserved3DTransform()),
|
|
"We can't have hit a frame that isn't visible!");
|
|
|
|
Matrix4x4 inverse = matrix;
|
|
inverse.Invert();
|
|
Point4D point = inverse.ProjectPoint(Point(NSAppUnitsToFloatPixels(aPoint.x, factor),
|
|
NSAppUnitsToFloatPixels(aPoint.y, factor)));
|
|
NS_ASSERTION(point.HasPositiveWCoord(), "Why are we trying to get the depth for a point we didn't hit?");
|
|
|
|
Point point2d = point.As2DPoint();
|
|
|
|
Point3D transformed = matrix * Point3D(point2d.x, point2d.y, 0);
|
|
return transformed.z;
|
|
}
|
|
|
|
/* The bounding rectangle for the object is the overflow rectangle translated
|
|
* by the reference point.
|
|
*/
|
|
nsRect
|
|
nsDisplayTransform::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
*aSnap = false;
|
|
|
|
if (mHasBounds) {
|
|
return mBounds;
|
|
}
|
|
|
|
if (mFrame->Extend3DContext() && !mIsTransformSeparator) {
|
|
return nsRect();
|
|
}
|
|
|
|
nsRect untransformedBounds = MaybePrerender() ?
|
|
mFrame->GetVisualOverflowRectRelativeToSelf() :
|
|
mStoredList.GetBounds(aBuilder, aSnap);
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
mBounds = nsLayoutUtils::MatrixTransformRect(untransformedBounds,
|
|
GetTransform(),
|
|
factor);
|
|
mHasBounds = true;
|
|
return mBounds;
|
|
}
|
|
|
|
void
|
|
nsDisplayTransform::ComputeBounds(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
MOZ_ASSERT(mFrame->Extend3DContext() || IsLeafOf3DContext());
|
|
|
|
/* For some cases, the transform would make an empty bounds, but it
|
|
* may be turned back again to get a non-empty bounds. We should
|
|
* not depend on transforming bounds level by level.
|
|
*
|
|
* Here, it applies accumulated transforms on the leaf frames of the
|
|
* 3d rendering context, and track and accmulate bounds at
|
|
* nsDisplayListBuilder.
|
|
*/
|
|
nsDisplayListBuilder::AutoAccumulateTransform accTransform(aBuilder);
|
|
|
|
accTransform.Accumulate(GetTransform());
|
|
|
|
if (!IsLeafOf3DContext()) {
|
|
// Do not dive into another 3D context.
|
|
mStoredList.DoUpdateBoundsPreserves3D(aBuilder);
|
|
}
|
|
|
|
/* For Preserves3D, it is bounds of only children as leaf frames.
|
|
* For non-leaf frames, their bounds are accumulated and kept at
|
|
* nsDisplayListBuilder.
|
|
*/
|
|
bool snap;
|
|
nsRect untransformedBounds = MaybePrerender() ?
|
|
mFrame->GetVisualOverflowRectRelativeToSelf() :
|
|
mStoredList.GetBounds(aBuilder, &snap);
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
nsRect rect =
|
|
nsLayoutUtils::MatrixTransformRect(untransformedBounds,
|
|
accTransform.GetCurrentTransform(),
|
|
factor);
|
|
|
|
aBuilder->AccumulateRect(rect);
|
|
}
|
|
|
|
/* The transform is opaque iff the transform consists solely of scales and
|
|
* translations and if the underlying content is opaque. Thus if the transform
|
|
* is of the form
|
|
*
|
|
* |a c e|
|
|
* |b d f|
|
|
* |0 0 1|
|
|
*
|
|
* We need b and c to be zero.
|
|
*
|
|
* We also need to check whether the underlying opaque content completely fills
|
|
* our visible rect. We use UntransformRect which expands to the axis-aligned
|
|
* bounding rect, but that's OK since if
|
|
* mStoredList.GetVisibleRect().Contains(untransformedVisible), then it
|
|
* certainly contains the actual (non-axis-aligned) untransformed rect.
|
|
*/
|
|
nsRegion nsDisplayTransform::GetOpaqueRegion(nsDisplayListBuilder *aBuilder,
|
|
bool* aSnap)
|
|
{
|
|
*aSnap = false;
|
|
nsRect untransformedVisible;
|
|
// If we're going to prerender all our content, pretend like we
|
|
// don't have opqaue content so that everything under us is rendered
|
|
// as well. That will increase graphics memory usage if our frame
|
|
// covers the entire window, but it allows our transform to be
|
|
// updated extremely cheaply, without invalidating any other
|
|
// content.
|
|
if (MaybePrerender() ||
|
|
!UntransformVisibleRect(aBuilder, &untransformedVisible)) {
|
|
return nsRegion();
|
|
}
|
|
|
|
const Matrix4x4& matrix = GetTransform();
|
|
|
|
nsRegion result;
|
|
Matrix matrix2d;
|
|
bool tmpSnap;
|
|
if (matrix.Is2D(&matrix2d) &&
|
|
matrix2d.PreservesAxisAlignedRectangles() &&
|
|
mStoredList.GetOpaqueRegion(aBuilder, &tmpSnap).Contains(untransformedVisible)) {
|
|
result = mVisibleRect.Intersect(GetBounds(aBuilder, &tmpSnap));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/* The transform is uniform if it fills the entire bounding rect and the
|
|
* wrapped list is uniform. See GetOpaqueRegion for discussion of why this
|
|
* works.
|
|
*/
|
|
bool nsDisplayTransform::IsUniform(nsDisplayListBuilder *aBuilder, nscolor* aColor)
|
|
{
|
|
nsRect untransformedVisible;
|
|
if (!UntransformVisibleRect(aBuilder, &untransformedVisible)) {
|
|
return false;
|
|
}
|
|
const Matrix4x4& matrix = GetTransform();
|
|
|
|
Matrix matrix2d;
|
|
return matrix.Is2D(&matrix2d) &&
|
|
matrix2d.PreservesAxisAlignedRectangles() &&
|
|
mStoredList.GetVisibleRect().Contains(untransformedVisible) &&
|
|
mStoredList.IsUniform(aBuilder, aColor);
|
|
}
|
|
|
|
/* If UNIFIED_CONTINUATIONS is defined, we can merge two display lists that
|
|
* share the same underlying content. Otherwise, doing so results in graphical
|
|
* glitches.
|
|
*/
|
|
#ifndef UNIFIED_CONTINUATIONS
|
|
|
|
bool
|
|
nsDisplayTransform::TryMerge(nsDisplayListBuilder *aBuilder,
|
|
nsDisplayItem *aItem)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
#else
|
|
|
|
bool
|
|
nsDisplayTransform::TryMerge(nsDisplayListBuilder *aBuilder,
|
|
nsDisplayItem *aItem)
|
|
{
|
|
NS_PRECONDITION(aItem, "Why did you try merging with a null item?");
|
|
NS_PRECONDITION(aBuilder, "Why did you try merging with a null builder?");
|
|
|
|
/* Make sure that we're dealing with two transforms. */
|
|
if (aItem->GetType() != TYPE_TRANSFORM)
|
|
return false;
|
|
|
|
/* Check to see that both frames are part of the same content. */
|
|
if (aItem->Frame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
|
|
if (aItem->GetClip() != GetClip())
|
|
return false;
|
|
|
|
/* Now, move everything over to this frame and signal that
|
|
* we merged things!
|
|
*/
|
|
mStoredList.MergeFromTrackingMergedFrames(&static_cast<nsDisplayTransform*>(aItem)->mStoredList);
|
|
return true;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* TransformRect takes in as parameters a rectangle (in app space) and returns
|
|
* the smallest rectangle (in app space) containing the transformed image of
|
|
* that rectangle. That is, it takes the four corners of the rectangle,
|
|
* transforms them according to the matrix associated with the specified frame,
|
|
* then returns the smallest rectangle containing the four transformed points.
|
|
*
|
|
* @param aUntransformedBounds The rectangle (in app units) to transform.
|
|
* @param aFrame The frame whose transformation should be applied.
|
|
* @param aOrigin The delta from the frame origin to the coordinate space origin
|
|
* @param aBoundsOverride (optional) Force the frame bounds to be the
|
|
* specified bounds.
|
|
* @return The smallest rectangle containing the image of the transformed
|
|
* rectangle.
|
|
*/
|
|
nsRect nsDisplayTransform::TransformRect(const nsRect &aUntransformedBounds,
|
|
const nsIFrame* aFrame,
|
|
const nsPoint &aOrigin,
|
|
const nsRect* aBoundsOverride,
|
|
bool aPreserves3D)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't take the transform based on a null frame!");
|
|
|
|
float factor = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
return nsLayoutUtils::MatrixTransformRect
|
|
(aUntransformedBounds,
|
|
(aPreserves3D ?
|
|
GetResultingTransformMatrixP3D(aFrame, aOrigin, factor,
|
|
aBoundsOverride) :
|
|
GetResultingTransformMatrix(aFrame, aOrigin, factor, aBoundsOverride)),
|
|
factor);
|
|
}
|
|
|
|
nsRect nsDisplayTransform::TransformRectOut(const nsRect &aUntransformedBounds,
|
|
const nsIFrame* aFrame,
|
|
const nsPoint &aOrigin,
|
|
const nsRect* aBoundsOverride)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't take the transform based on a null frame!");
|
|
|
|
float factor = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
return nsLayoutUtils::MatrixTransformRectOut
|
|
(aUntransformedBounds,
|
|
GetResultingTransformMatrixP3D(aFrame, aOrigin, factor, aBoundsOverride),
|
|
factor);
|
|
}
|
|
|
|
bool nsDisplayTransform::UntransformRect(const nsRect &aTransformedBounds,
|
|
const nsRect &aChildBounds,
|
|
const nsIFrame* aFrame,
|
|
const nsPoint &aOrigin,
|
|
nsRect *aOutRect,
|
|
bool aPreserves3D)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't take the transform based on a null frame!");
|
|
|
|
float factor = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
Matrix4x4 transform = aPreserves3D ?
|
|
GetResultingTransformMatrixP3D(aFrame, aOrigin, factor, nullptr) :
|
|
GetResultingTransformMatrix(aFrame, aOrigin, factor, nullptr);
|
|
if (transform.IsSingular()) {
|
|
return false;
|
|
}
|
|
|
|
Rect result(NSAppUnitsToFloatPixels(aTransformedBounds.x, factor),
|
|
NSAppUnitsToFloatPixels(aTransformedBounds.y, factor),
|
|
NSAppUnitsToFloatPixels(aTransformedBounds.width, factor),
|
|
NSAppUnitsToFloatPixels(aTransformedBounds.height, factor));
|
|
|
|
Rect childGfxBounds(NSAppUnitsToFloatPixels(aChildBounds.x, factor),
|
|
NSAppUnitsToFloatPixels(aChildBounds.y, factor),
|
|
NSAppUnitsToFloatPixels(aChildBounds.width, factor),
|
|
NSAppUnitsToFloatPixels(aChildBounds.height, factor));
|
|
|
|
result = transform.Inverse().ProjectRectBounds(result, childGfxBounds);
|
|
*aOutRect = nsLayoutUtils::RoundGfxRectToAppRect(ThebesRect(result), factor);
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayTransform::UntransformVisibleRect(nsDisplayListBuilder* aBuilder,
|
|
nsRect *aOutRect)
|
|
{
|
|
const Matrix4x4& matrix = GetTransform();
|
|
if (matrix.IsSingular())
|
|
return false;
|
|
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Rect result(NSAppUnitsToFloatPixels(mVisibleRect.x, factor),
|
|
NSAppUnitsToFloatPixels(mVisibleRect.y, factor),
|
|
NSAppUnitsToFloatPixels(mVisibleRect.width, factor),
|
|
NSAppUnitsToFloatPixels(mVisibleRect.height, factor));
|
|
|
|
bool snap;
|
|
nsRect childBounds = mStoredList.GetBounds(aBuilder, &snap);
|
|
Rect childGfxBounds(NSAppUnitsToFloatPixels(childBounds.x, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.y, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.width, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.height, factor));
|
|
|
|
/* We want to untransform the matrix, so invert the transformation first! */
|
|
result = matrix.Inverse().ProjectRectBounds(result, childGfxBounds);
|
|
|
|
*aOutRect = nsLayoutUtils::RoundGfxRectToAppRect(ThebesRect(result), factor);
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsDisplayTransform::WriteDebugInfo(std::stringstream& aStream)
|
|
{
|
|
AppendToString(aStream, GetTransform());
|
|
}
|
|
|
|
nsDisplayItemGeometry*
|
|
nsCharClipDisplayItem::AllocateGeometry(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
return new nsCharClipGeometry(this, aBuilder);
|
|
}
|
|
|
|
void
|
|
nsCharClipDisplayItem::ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion)
|
|
{
|
|
const nsCharClipGeometry* geometry = static_cast<const nsCharClipGeometry*>(aGeometry);
|
|
|
|
bool snap;
|
|
nsRect newRect = geometry->mBounds;
|
|
nsRect oldRect = GetBounds(aBuilder, &snap);
|
|
if (mVisIStartEdge != geometry->mVisIStartEdge ||
|
|
mVisIEndEdge != geometry->mVisIEndEdge ||
|
|
!oldRect.IsEqualInterior(newRect) ||
|
|
!geometry->mBorderRect.IsEqualInterior(GetBorderRect())) {
|
|
aInvalidRegion->Or(oldRect, newRect);
|
|
}
|
|
}
|
|
|
|
nsDisplaySVGEffects::nsDisplaySVGEffects(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList),
|
|
mEffectsBounds(aFrame->GetVisualOverflowRectRelativeToSelf())
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplaySVGEffects);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplaySVGEffects::~nsDisplaySVGEffects()
|
|
{
|
|
MOZ_COUNT_DTOR(nsDisplaySVGEffects);
|
|
}
|
|
#endif
|
|
|
|
nsDisplayVR::nsDisplayVR(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsDisplayList* aList, mozilla::gfx::VRHMDInfo* aHMD)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList)
|
|
, mHMD(aHMD)
|
|
{
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayVR::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
ContainerLayerParameters newContainerParameters = aContainerParameters;
|
|
uint32_t flags = FrameLayerBuilder::CONTAINER_NOT_CLIPPED_BY_ANCESTORS |
|
|
FrameLayerBuilder::CONTAINER_ALLOW_PULL_BACKGROUND_COLOR;
|
|
RefPtr<ContainerLayer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, &mList,
|
|
newContainerParameters, nullptr, flags);
|
|
|
|
container->SetVRHMDInfo(mHMD);
|
|
container->SetUserData(nsIFrame::LayerIsPrerenderedDataKey(),
|
|
/*the value is irrelevant*/nullptr);
|
|
|
|
return container.forget();
|
|
}
|
|
nsRegion nsDisplaySVGEffects::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap)
|
|
{
|
|
*aSnap = false;
|
|
return nsRegion();
|
|
}
|
|
|
|
void
|
|
nsDisplaySVGEffects::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
|
|
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
nsPoint rectCenter(aRect.x + aRect.width / 2, aRect.y + aRect.height / 2);
|
|
if (nsSVGIntegrationUtils::HitTestFrameForEffects(mFrame,
|
|
rectCenter - ToReferenceFrame())) {
|
|
mList.HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDisplaySVGEffects::PaintAsLayer(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx,
|
|
LayerManager* aManager)
|
|
{
|
|
nsSVGIntegrationUtils::PaintFramesWithEffects(*aCtx->ThebesContext(), mFrame,
|
|
mVisibleRect,
|
|
aBuilder, aManager);
|
|
}
|
|
|
|
LayerState
|
|
nsDisplaySVGEffects::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aParameters)
|
|
{
|
|
return LAYER_SVG_EFFECTS;
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplaySVGEffects::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerLayerParameters& aContainerParameters)
|
|
{
|
|
const nsIContent* content = mFrame->GetContent();
|
|
bool hasSVGLayout = (mFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT);
|
|
if (hasSVGLayout) {
|
|
nsISVGChildFrame *svgChildFrame = do_QueryFrame(mFrame);
|
|
if (!svgChildFrame || !mFrame->GetContent()->IsSVGElement()) {
|
|
NS_ASSERTION(false, "why?");
|
|
return nullptr;
|
|
}
|
|
if (!static_cast<const nsSVGElement*>(content)->HasValidDimensions()) {
|
|
return nullptr; // The SVG spec says not to draw filters for this
|
|
}
|
|
}
|
|
|
|
float opacity = mFrame->StyleDisplay()->mOpacity;
|
|
if (opacity == 0.0f)
|
|
return nullptr;
|
|
|
|
nsIFrame* firstFrame =
|
|
nsLayoutUtils::FirstContinuationOrIBSplitSibling(mFrame);
|
|
nsSVGEffects::EffectProperties effectProperties =
|
|
nsSVGEffects::GetEffectProperties(firstFrame);
|
|
|
|
bool isOK = effectProperties.HasNoFilterOrHasValidFilter();
|
|
effectProperties.GetClipPathFrame(&isOK);
|
|
effectProperties.GetMaskFrame(&isOK);
|
|
|
|
if (!isOK) {
|
|
return nullptr;
|
|
}
|
|
|
|
ContainerLayerParameters newContainerParameters = aContainerParameters;
|
|
if (effectProperties.HasValidFilter()) {
|
|
newContainerParameters.mDisableSubpixelAntialiasingInDescendants = true;
|
|
}
|
|
|
|
RefPtr<ContainerLayer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, &mList,
|
|
newContainerParameters, nullptr);
|
|
|
|
return container.forget();
|
|
}
|
|
|
|
bool nsDisplaySVGEffects::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect dirtyRect =
|
|
nsSVGIntegrationUtils::GetRequiredSourceForInvalidArea(mFrame,
|
|
mVisibleRect - offset) +
|
|
offset;
|
|
|
|
// Our children may be made translucent or arbitrarily deformed so we should
|
|
// not allow them to subtract area from aVisibleRegion.
|
|
nsRegion childrenVisible(dirtyRect);
|
|
nsRect r = dirtyRect.Intersect(mList.GetBounds(aBuilder));
|
|
mList.ComputeVisibilityForSublist(aBuilder, &childrenVisible, r);
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplaySVGEffects::TryMerge(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem)
|
|
{
|
|
if (aItem->GetType() != TYPE_SVG_EFFECTS)
|
|
return false;
|
|
// items for the same content element should be merged into a single
|
|
// compositing group
|
|
// aItem->GetUnderlyingFrame() returns non-null because it's nsDisplaySVGEffects
|
|
if (aItem->Frame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
if (aItem->GetClip() != GetClip())
|
|
return false;
|
|
nsDisplaySVGEffects* other = static_cast<nsDisplaySVGEffects*>(aItem);
|
|
MergeFromTrackingMergedFrames(other);
|
|
mEffectsBounds.UnionRect(mEffectsBounds,
|
|
other->mEffectsBounds + other->mFrame->GetOffsetTo(mFrame));
|
|
return true;
|
|
}
|
|
|
|
gfxRect
|
|
nsDisplaySVGEffects::BBoxInUserSpace() const
|
|
{
|
|
return nsSVGUtils::GetBBox(mFrame);
|
|
}
|
|
|
|
gfxPoint
|
|
nsDisplaySVGEffects::UserSpaceOffset() const
|
|
{
|
|
return nsSVGUtils::FrameSpaceInCSSPxToUserSpaceOffset(mFrame);
|
|
}
|
|
|
|
void
|
|
nsDisplaySVGEffects::ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
|
|
const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion)
|
|
{
|
|
const nsDisplaySVGEffectsGeometry* geometry =
|
|
static_cast<const nsDisplaySVGEffectsGeometry*>(aGeometry);
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
if (geometry->mFrameOffsetToReferenceFrame != ToReferenceFrame() ||
|
|
geometry->mUserSpaceOffset != UserSpaceOffset() ||
|
|
!geometry->mBBox.IsEqualInterior(BBoxInUserSpace())) {
|
|
// Filter and mask output can depend on the location of the frame's user
|
|
// space and on the frame's BBox. We need to invalidate if either of these
|
|
// change relative to the reference frame.
|
|
// Invalidations from our inactive layer manager are not enough to catch
|
|
// some of these cases because filters can produce output even if there's
|
|
// nothing in the filter input.
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
void
|
|
nsDisplaySVGEffects::PrintEffects(nsACString& aTo)
|
|
{
|
|
nsIFrame* firstFrame =
|
|
nsLayoutUtils::FirstContinuationOrIBSplitSibling(mFrame);
|
|
nsSVGEffects::EffectProperties effectProperties =
|
|
nsSVGEffects::GetEffectProperties(firstFrame);
|
|
bool isOK = true;
|
|
nsSVGClipPathFrame *clipPathFrame = effectProperties.GetClipPathFrame(&isOK);
|
|
bool first = true;
|
|
aTo += " effects=(";
|
|
if (mFrame->StyleDisplay()->mOpacity != 1.0f) {
|
|
first = false;
|
|
aTo += nsPrintfCString("opacity(%f)", mFrame->StyleDisplay()->mOpacity);
|
|
}
|
|
if (clipPathFrame) {
|
|
if (!first) {
|
|
aTo += ", ";
|
|
}
|
|
aTo += nsPrintfCString("clip(%s)", clipPathFrame->IsTrivial() ? "trivial" : "non-trivial");
|
|
first = false;
|
|
}
|
|
if (effectProperties.HasValidFilter()) {
|
|
if (!first) {
|
|
aTo += ", ";
|
|
}
|
|
aTo += "filter";
|
|
first = false;
|
|
}
|
|
if (effectProperties.GetMaskFrame(&isOK)) {
|
|
if (!first) {
|
|
aTo += ", ";
|
|
}
|
|
aTo += "mask";
|
|
}
|
|
aTo += ")";
|
|
}
|
|
#endif
|
|
|