mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
b3a668dd2a
Fix the size check in nsDisplayBackground::ShouldFixToViewport so that async scrolling of fixed backgrounds works correctly when zoomed in on Firefox Mobile. Also make IsFixedItem in nsDisplayList public and use it in FrameLayerBuilder, so that fixed items are determined and treated consistently.
4017 lines
144 KiB
C++
4017 lines
144 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 "mozilla/layers/PLayers.h"
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#include "nsDisplayList.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 "nsFrameManager.h"
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#include "gfxContext.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 "nsSVGIntegrationUtils.h"
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#include "nsLayoutUtils.h"
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#include "nsIScrollableFrame.h"
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#include "nsThemeConstants.h"
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#include "imgIContainer.h"
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#include "nsIInterfaceRequestorUtils.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 "nsSVGEffects.h"
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#include "nsSVGElement.h"
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#include "nsSVGClipPathFrame.h"
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#include "sampler.h"
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#include "nsAnimationManager.h"
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#include "nsTransitionManager.h"
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#include "nsIViewManager.h"
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#include "ImageLayers.h"
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#include "ImageContainer.h"
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#include "mozilla/StandardInteger.h"
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using namespace mozilla;
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using namespace mozilla::css;
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using namespace mozilla::layers;
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typedef FrameMetrics::ViewID ViewID;
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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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nsRect& aBounds,
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float aAppUnitsPerPixel,
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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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bool canStoreInRuleTree = true;
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switch (nsStyleTransformMatrix::TransformFunctionOf(array)) {
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case eCSSKeyword_rotatex:
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{
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double theta = array->Item(1).GetAngleValueInRadians();
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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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double theta = array->Item(1).GetAngleValueInRadians();
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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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double theta = array->Item(1).GetAngleValueInRadians();
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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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double theta = array->Item(1).GetAngleValueInRadians();
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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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double theta = array->Item(4).GetAngleValueInRadians();
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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, canStoreInRuleTree,
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aBounds.Width(), aAppUnitsPerPixel);
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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, canStoreInRuleTree,
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aBounds.Height(), aAppUnitsPerPixel);
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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, canStoreInRuleTree,
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0, aAppUnitsPerPixel);
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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, canStoreInRuleTree,
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aBounds.Width(), aAppUnitsPerPixel);
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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, canStoreInRuleTree,
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aBounds.Height(), aAppUnitsPerPixel);
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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, canStoreInRuleTree,
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aBounds.Width(), aAppUnitsPerPixel);
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double y = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(2), aContext, aPresContext, canStoreInRuleTree,
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aBounds.Height(), aAppUnitsPerPixel);
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double z = nsStyleTransformMatrix::ProcessTranslatePart(
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array->Item(3), aContext, aPresContext, canStoreInRuleTree,
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0, aAppUnitsPerPixel);
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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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double x = array->Item(1).GetFloatValue();
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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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double y = array->Item(1).GetFloatValue();
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aFunctions.AppendElement(SkewY(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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gfx3DMatrix 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 = array->Item(3).GetFloatValue();
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matrix._21 = array->Item(4).GetFloatValue();
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matrix._22 = array->Item(5).GetFloatValue();
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matrix._23 = 0;
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matrix._24 = array->Item(6).GetFloatValue();
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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 = 0;
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matrix._42 = 0;
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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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gfx3DMatrix 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_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(css::ComputedTimingFunction& aCTF)
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{
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if (aCTF.GetType() == nsTimingFunction::Function) {
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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::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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AddAnimationsForProperty(nsIFrame* aFrame, nsCSSProperty aProperty,
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ElementAnimation* ea, Layer* aLayer,
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AnimationData& aData)
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{
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NS_ASSERTION(aLayer->AsContainerLayer(), "Should only animate ContainerLayer");
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nsStyleContext* styleContext = aFrame->GetStyleContext();
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nsPresContext* presContext = aFrame->PresContext();
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nsRect bounds = nsDisplayTransform::GetFrameBoundsForTransform(aFrame);
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float scale = presContext->AppUnitsPerDevPixel();
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TimeStamp startTime = ea->mStartTime;
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TimeDuration duration = ea->mIterationDuration;
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float iterations = ea->mIterationCount != NS_IEEEPositiveInfinity()
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? ea->mIterationCount : -1;
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int direction = ea->mDirection;
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Animation* animation = aLayer->AddAnimation(startTime, duration,
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iterations, direction,
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aProperty, aData);
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for (uint32_t propIdx = 0; propIdx < ea->mProperties.Length(); propIdx++) {
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AnimationProperty* property = &ea->mProperties[propIdx];
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if (aProperty != property->mProperty) {
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continue;
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}
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for (uint32_t segIdx = 0; segIdx < property->mSegments.Length(); segIdx++) {
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AnimationPropertySegment* segment = &property->mSegments[segIdx];
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AnimationSegment* animSegment = animation->segments().AppendElement();
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if (aProperty == eCSSProperty_transform) {
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animSegment->startState() = InfallibleTArray<TransformFunction>();
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animSegment->endState() = InfallibleTArray<TransformFunction>();
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nsCSSValueList* list = segment->mFromValue.GetCSSValueListValue();
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AddTransformFunctions(list, styleContext, presContext, bounds, scale,
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animSegment->startState().get_ArrayOfTransformFunction());
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list = segment->mToValue.GetCSSValueListValue();
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AddTransformFunctions(list, styleContext, presContext, bounds, scale,
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animSegment->endState().get_ArrayOfTransformFunction());
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} else if (aProperty == eCSSProperty_opacity) {
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animSegment->startState() = segment->mFromValue.GetFloatValue();
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animSegment->endState() = segment->mToValue.GetFloatValue();
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}
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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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}
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}
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}
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static void
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AddAnimationsAndTransitionsToLayer(Layer* aLayer, nsDisplayListBuilder* aBuilder,
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nsDisplayItem* aItem, nsCSSProperty aProperty)
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{
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aLayer->ClearAnimations();
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nsIFrame* frame = aItem->GetUnderlyingFrame();
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nsIContent* aContent = frame->GetContent();
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ElementTransitions* et =
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nsTransitionManager::GetTransitionsForCompositor(aContent, aProperty);
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ElementAnimations* ea =
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nsAnimationManager::GetAnimationsForCompositor(aContent, aProperty);
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if (!ea && !et) {
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return;
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}
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// If the frame is not prerendered, bail out. Layout will still perform the
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// animation.
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if (!aItem->CanUseAsyncAnimations(aBuilder)) {
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return;
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}
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mozilla::TimeStamp currentTime =
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frame->PresContext()->RefreshDriver()->MostRecentRefresh();
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AnimationData data;
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if (aProperty == eCSSProperty_transform) {
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nsRect bounds = nsDisplayTransform::GetFrameBoundsForTransform(frame);
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float scale = nsDeviceContext::AppUnitsPerCSSPixel();
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gfxPoint3D offsetToTransformOrigin =
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nsDisplayTransform::GetDeltaToMozTransformOrigin(frame, scale, &bounds);
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gfxPoint3D offsetToPerspectiveOrigin =
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nsDisplayTransform::GetDeltaToMozPerspectiveOrigin(frame, scale);
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nscoord perspective = 0.0;
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nsStyleContext* parentStyleContext = frame->GetStyleContext()->GetParent();
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if (parentStyleContext) {
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const nsStyleDisplay* disp = parentStyleContext->GetStyleDisplay();
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if (disp && disp->mChildPerspective.GetUnit() == eStyleUnit_Coord) {
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perspective = disp->mChildPerspective.GetCoordValue();
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}
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}
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nsPoint origin = aItem->ToReferenceFrame();
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data = TransformData(origin, offsetToTransformOrigin,
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offsetToPerspectiveOrigin, bounds, perspective);
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} else if (aProperty == eCSSProperty_opacity) {
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data = null_t();
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}
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if (et) {
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for (uint32_t tranIdx = 0; tranIdx < et->mPropertyTransitions.Length(); tranIdx++) {
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ElementPropertyTransition* pt = &et->mPropertyTransitions[tranIdx];
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if (pt->mProperty != aProperty || !pt->IsRunningAt(currentTime)) {
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continue;
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}
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ElementAnimation anim;
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anim.mIterationCount = 1;
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anim.mDirection = NS_STYLE_ANIMATION_DIRECTION_NORMAL;
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anim.mFillMode = NS_STYLE_ANIMATION_FILL_MODE_NONE;
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anim.mStartTime = pt->mStartTime;
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anim.mIterationDuration = pt->mDuration;
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AnimationProperty& prop = *anim.mProperties.AppendElement();
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prop.mProperty = pt->mProperty;
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AnimationPropertySegment& segment = *prop.mSegments.AppendElement();
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segment.mFromKey = 0;
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segment.mToKey = 1;
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segment.mFromValue = pt->mStartValue;
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segment.mToValue = pt->mEndValue;
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segment.mTimingFunction = pt->mTimingFunction;
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AddAnimationsForProperty(frame, aProperty, &anim,
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aLayer, data);
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}
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}
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if (ea) {
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for (uint32_t animIdx = 0; animIdx < ea->mAnimations.Length(); animIdx++) {
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ElementAnimation* anim = &ea->mAnimations[animIdx];
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if (!(anim->HasAnimationOfProperty(aProperty) &&
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anim->IsRunningAt(currentTime))) {
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continue;
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}
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AddAnimationsForProperty(frame, aProperty, anim,
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aLayer, data);
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}
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}
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}
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nsDisplayListBuilder::nsDisplayListBuilder(nsIFrame* aReferenceFrame,
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Mode aMode, bool aBuildCaret)
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: mReferenceFrame(aReferenceFrame),
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mIgnoreScrollFrame(nullptr),
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mCurrentTableItem(nullptr),
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mFinalTransparentRegion(nullptr),
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mCachedOffsetFrame(aReferenceFrame),
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mCachedOffset(0, 0),
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mGlassDisplayItem(nullptr),
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mMode(aMode),
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mBuildCaret(aBuildCaret),
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mIgnoreSuppression(false),
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mHadToIgnoreSuppression(false),
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mIsAtRootOfPseudoStackingContext(false),
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mIncludeAllOutOfFlows(false),
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mSelectedFramesOnly(false),
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mAccurateVisibleRegions(false),
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mInTransform(false),
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mSyncDecodeImages(false),
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mIsPaintingToWindow(false),
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mHasDisplayPort(false),
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mHasFixedItems(false),
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mIsInFixedPosition(false),
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mIsCompositingCheap(false)
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{
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MOZ_COUNT_CTOR(nsDisplayListBuilder);
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PL_InitArenaPool(&mPool, "displayListArena", 1024,
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NS_MAX(NS_ALIGNMENT_OF(void*),NS_ALIGNMENT_OF(double))-1);
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nsPresContext* pc = aReferenceFrame->PresContext();
|
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nsIPresShell *shell = pc->PresShell();
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if (pc->IsRenderingOnlySelection()) {
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nsCOMPtr<nsISelectionController> selcon(do_QueryInterface(shell));
|
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if (selcon) {
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selcon->GetSelection(nsISelectionController::SELECTION_NORMAL,
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getter_AddRefs(mBoundingSelection));
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}
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}
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if(mReferenceFrame->GetType() == nsGkAtoms::viewportFrame) {
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ViewportFrame* viewportFrame = static_cast<ViewportFrame*>(mReferenceFrame);
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if (!viewportFrame->GetChildList(nsIFrame::kFixedList).IsEmpty()) {
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mHasFixedItems = true;
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}
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}
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PR_STATIC_ASSERT(nsDisplayItem::TYPE_MAX < (1 << nsDisplayItem::TYPE_BITS));
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}
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static void MarkFrameForDisplay(nsIFrame* aFrame, nsIFrame* aStopAtFrame) {
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for (nsIFrame* f = aFrame; f;
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f = nsLayoutUtils::GetParentOrPlaceholderFor(f)) {
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if (f->GetStateBits() & NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO)
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return;
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f->AddStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO);
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if (f == aStopAtFrame) {
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// we've reached a frame that we know will be painted, so we can stop.
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break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool IsFixedFrame(nsIFrame* aFrame)
|
|
{
|
|
return aFrame && aFrame->GetParent() && !aFrame->GetParent()->GetParent();
|
|
}
|
|
|
|
bool
|
|
nsDisplayListBuilder::IsFixedItem(nsDisplayItem *aItem,
|
|
nsIFrame** aActiveScrolledRoot,
|
|
nsIFrame* aOverrideActiveScrolledRoot)
|
|
{
|
|
nsIFrame* activeScrolledRoot = aOverrideActiveScrolledRoot;
|
|
if (!activeScrolledRoot) {
|
|
if (aItem->GetType() == nsDisplayItem::TYPE_SCROLL_LAYER) {
|
|
nsDisplayScrollLayer* scrollLayerItem =
|
|
static_cast<nsDisplayScrollLayer*>(aItem);
|
|
activeScrolledRoot =
|
|
nsLayoutUtils::GetActiveScrolledRootFor(scrollLayerItem->GetScrolledFrame(),
|
|
ReferenceFrame());
|
|
} else {
|
|
activeScrolledRoot = nsLayoutUtils::GetActiveScrolledRootFor(aItem, this);
|
|
}
|
|
}
|
|
|
|
if (aActiveScrolledRoot) {
|
|
*aActiveScrolledRoot = activeScrolledRoot;
|
|
}
|
|
|
|
return activeScrolledRoot &&
|
|
!nsLayoutUtils::IsScrolledByRootContentDocumentDisplayportScrolling(activeScrolledRoot, this);
|
|
}
|
|
|
|
static bool ForceVisiblityForFixedItem(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem)
|
|
{
|
|
return aBuilder->GetDisplayPort() && aBuilder->GetHasFixedItems() &&
|
|
aBuilder->IsFixedItem(aItem);
|
|
}
|
|
|
|
void nsDisplayListBuilder::SetDisplayPort(const nsRect& aDisplayPort)
|
|
{
|
|
static bool fixedPositionLayersEnabled = getenv("MOZ_ENABLE_FIXED_POSITION_LAYERS") != 0;
|
|
if (fixedPositionLayersEnabled) {
|
|
mHasDisplayPort = true;
|
|
mDisplayPort = aDisplayPort;
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::MarkOutOfFlowFrameForDisplay(nsIFrame* aDirtyFrame,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aDirtyRect)
|
|
{
|
|
nsRect dirty = aDirtyRect - aFrame->GetOffsetTo(aDirtyFrame);
|
|
nsRect overflowRect = aFrame->GetVisualOverflowRect();
|
|
|
|
if (mHasDisplayPort && IsFixedFrame(aFrame)) {
|
|
dirty = overflowRect;
|
|
}
|
|
|
|
if (!dirty.IntersectRect(dirty, overflowRect))
|
|
return;
|
|
aFrame->Properties().Set(nsDisplayListBuilder::OutOfFlowDirtyRectProperty(),
|
|
new nsRect(dirty));
|
|
|
|
MarkFrameForDisplay(aFrame, aDirtyFrame);
|
|
}
|
|
|
|
static void UnmarkFrameForDisplay(nsIFrame* aFrame) {
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
presContext->PropertyTable()->
|
|
Delete(aFrame, nsDisplayListBuilder::OutOfFlowDirtyRectProperty());
|
|
|
|
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);
|
|
}
|
|
}
|
|
|
|
static void RecordFrameMetrics(nsIFrame* aForFrame,
|
|
nsIFrame* aScrollFrame,
|
|
ContainerLayer* aRoot,
|
|
const nsRect& aVisibleRect,
|
|
const nsRect& aViewport,
|
|
nsRect* aDisplayPort,
|
|
ViewID aScrollId,
|
|
const nsDisplayItem::ContainerParameters& aContainerParameters,
|
|
bool aMayHaveTouchListeners) {
|
|
nsPresContext* presContext = aForFrame->PresContext();
|
|
int32_t auPerDevPixel = presContext->AppUnitsPerDevPixel();
|
|
|
|
nsIntRect visible = aVisibleRect.ScaleToNearestPixels(
|
|
aContainerParameters.mXScale, aContainerParameters.mYScale, auPerDevPixel);
|
|
aRoot->SetVisibleRegion(nsIntRegion(visible));
|
|
|
|
FrameMetrics metrics;
|
|
|
|
metrics.mViewport = aViewport.ScaleToNearestPixels(
|
|
aContainerParameters.mXScale, aContainerParameters.mYScale, auPerDevPixel);
|
|
|
|
if (aDisplayPort) {
|
|
metrics.mDisplayPort = aDisplayPort->ScaleToNearestPixels(
|
|
aContainerParameters.mXScale, aContainerParameters.mYScale, auPerDevPixel);
|
|
}
|
|
|
|
nsIScrollableFrame* scrollableFrame = nullptr;
|
|
if (aScrollFrame)
|
|
scrollableFrame = aScrollFrame->GetScrollTargetFrame();
|
|
|
|
if (scrollableFrame) {
|
|
nsRect contentBounds = scrollableFrame->GetScrollRange();
|
|
contentBounds.width += scrollableFrame->GetScrollPortRect().width;
|
|
contentBounds.height += scrollableFrame->GetScrollPortRect().height;
|
|
metrics.mCSSContentRect =
|
|
mozilla::gfx::Rect(nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.x),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.y),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.width),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.height));
|
|
metrics.mContentRect = contentBounds.ScaleToNearestPixels(
|
|
aContainerParameters.mXScale, aContainerParameters.mYScale, auPerDevPixel);
|
|
nsPoint scrollPosition = scrollableFrame->GetScrollPosition();
|
|
metrics.mViewportScrollOffset = mozilla::gfx::Point(
|
|
NSAppUnitsToDoublePixels(scrollPosition.x, auPerDevPixel) * aContainerParameters.mXScale,
|
|
NSAppUnitsToDoublePixels(scrollPosition.y, auPerDevPixel) * aContainerParameters.mYScale);
|
|
}
|
|
else {
|
|
nsRect contentBounds = aForFrame->GetRect();
|
|
metrics.mCSSContentRect =
|
|
mozilla::gfx::Rect(nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.x),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.y),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.width),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(contentBounds.height));
|
|
metrics.mContentRect = contentBounds.ScaleToNearestPixels(
|
|
aContainerParameters.mXScale, aContainerParameters.mYScale, auPerDevPixel);
|
|
}
|
|
|
|
metrics.mScrollId = aScrollId;
|
|
|
|
nsIPresShell* presShell = presContext->GetPresShell();
|
|
metrics.mResolution = gfxSize(presShell->GetXResolution(), presShell->GetYResolution());
|
|
|
|
metrics.mMayHaveTouchListeners = aMayHaveTouchListeners;
|
|
|
|
aRoot->SetFrameMetrics(metrics);
|
|
}
|
|
|
|
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");
|
|
|
|
PL_FreeArenaPool(&mPool);
|
|
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;
|
|
}
|
|
|
|
static uint64_t RegionArea(const nsRegion& aRegion)
|
|
{
|
|
uint64_t area = 0;
|
|
nsRegionRectIterator iter(aRegion);
|
|
const nsRect* r;
|
|
while ((r = iter.Next()) != nullptr) {
|
|
area += uint64_t(r->width)*r->height;
|
|
}
|
|
return area;
|
|
}
|
|
|
|
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 ||
|
|
RegionArea(tmp) <= RegionArea(*aVisibleRegion)/2) {
|
|
*aVisibleRegion = tmp;
|
|
}
|
|
}
|
|
|
|
nsCaret *
|
|
nsDisplayListBuilder::GetCaret() {
|
|
nsRefPtr<nsCaret> caret = CurrentPresShellState()->mPresShell->GetCaret();
|
|
return caret;
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::EnterPresShell(nsIFrame* aReferenceFrame,
|
|
const nsRect& aDirtyRect) {
|
|
PresShellState* state = mPresShellStates.AppendElement();
|
|
if (!state)
|
|
return;
|
|
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;
|
|
}
|
|
|
|
if (!buildCaret)
|
|
return;
|
|
|
|
nsRefPtr<nsCaret> caret = state->mPresShell->GetCaret();
|
|
state->mCaretFrame = caret->GetCaretFrame();
|
|
|
|
if (state->mCaretFrame) {
|
|
// Check if the dirty rect intersects with the caret's dirty rect.
|
|
nsRect caretRect =
|
|
caret->GetCaretRect() + state->mCaretFrame->GetOffsetTo(aReferenceFrame);
|
|
if (caretRect.Intersects(aDirtyRect)) {
|
|
// Okay, our rects intersect, let's mark the frame and all of its ancestors.
|
|
mFramesMarkedForDisplay.AppendElement(state->mCaretFrame);
|
|
MarkFrameForDisplay(state->mCaretFrame, nullptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::LeavePresShell(nsIFrame* aReferenceFrame,
|
|
const nsRect& aDirtyRect) {
|
|
if (CurrentPresShellState()->mPresShell != aReferenceFrame->PresContext()->PresShell()) {
|
|
// Must have not allocated a state for this presshell, presumably due
|
|
// to OOM.
|
|
return;
|
|
}
|
|
|
|
// 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);
|
|
mPresShellStates.SetLength(mPresShellStates.Length() - 1);
|
|
}
|
|
|
|
void
|
|
nsDisplayListBuilder::MarkFramesForDisplayList(nsIFrame* aDirtyFrame,
|
|
const nsFrameList& aFrames,
|
|
const nsRect& aDirtyRect) {
|
|
for (nsFrameList::Enumerator e(aFrames); !e.AtEnd(); e.Next()) {
|
|
mFramesMarkedForDisplay.AppendElement(e.get());
|
|
MarkOutOfFlowFrameForDisplay(aDirtyFrame, e.get(), aDirtyRect);
|
|
}
|
|
}
|
|
|
|
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->Preserves3D()) {
|
|
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);
|
|
return tmp;
|
|
}
|
|
|
|
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());
|
|
}
|
|
|
|
void
|
|
nsDisplayList::FlattenTo(nsTArray<nsDisplayItem*>* aElements) {
|
|
nsDisplayItem* item;
|
|
while ((item = RemoveBottom()) != nullptr) {
|
|
if (item->GetType() == nsDisplayItem::TYPE_WRAP_LIST) {
|
|
item->GetList()->FlattenTo(aElements);
|
|
item->~nsDisplayItem();
|
|
} else {
|
|
aElements->AppendElement(item);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayList::GetBounds(nsDisplayListBuilder* aBuilder) const {
|
|
nsRect bounds;
|
|
for (nsDisplayItem* i = GetBottom(); i != nullptr; i = i->GetAbove()) {
|
|
bool snap;
|
|
bounds.UnionRect(bounds, i->GetBounds(aBuilder, &snap));
|
|
}
|
|
return bounds;
|
|
}
|
|
|
|
bool
|
|
nsDisplayList::ComputeVisibilityForRoot(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
SAMPLE_LABEL("nsDisplayList", "ComputeVisibilityForRoot");
|
|
nsRegion r;
|
|
r.And(*aVisibleRegion, GetBounds(aBuilder));
|
|
return ComputeVisibilityForSublist(aBuilder, aVisibleRegion, r.GetBounds(), r.GetBounds());
|
|
}
|
|
|
|
static nsRegion
|
|
TreatAsOpaque(nsDisplayItem* aItem, nsDisplayListBuilder* aBuilder)
|
|
{
|
|
bool snap;
|
|
nsRegion opaque = aItem->GetOpaqueRegion(aBuilder, &snap);
|
|
if (aBuilder->IsForPluginGeometry()) {
|
|
// Treat all 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.
|
|
nsIFrame* f = aItem->GetUnderlyingFrame();
|
|
if (f && f->PresContext()->IsChrome() && f->GetStyleDisplay()->mOpacity != 0.0) {
|
|
opaque = aItem->GetBounds(aBuilder, &snap);
|
|
}
|
|
}
|
|
return opaque;
|
|
}
|
|
|
|
static nsRect
|
|
GetDisplayPortBounds(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem)
|
|
{
|
|
// GetDisplayPortBounds() rectangle is used in order to restrict fixed aItem's
|
|
// visible bounds. nsDisplayTransform bounds already take item's
|
|
// transform into account, so there is no need to apply it here one more time.
|
|
// Start TransformRectToBoundsInAncestor() calculations from aItem's frame
|
|
// parent in this case.
|
|
nsIFrame* frame = aItem->GetUnderlyingFrame();
|
|
if (aItem->GetType() == nsDisplayItem::TYPE_TRANSFORM) {
|
|
frame = nsLayoutUtils::GetCrossDocParentFrame(frame);
|
|
}
|
|
|
|
const nsRect* displayport = aBuilder->GetDisplayPort();
|
|
nsRect result = nsLayoutUtils::TransformAncestorRectToFrame(
|
|
frame,
|
|
nsRect(0, 0, displayport->width, displayport->height),
|
|
aBuilder->ReferenceFrame());
|
|
result.MoveBy(aBuilder->ToReferenceFrame(frame));
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsDisplayList::ComputeVisibilityForSublist(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aListVisibleBounds,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
bool snap;
|
|
#ifdef DEBUG
|
|
nsRegion r;
|
|
r.And(*aVisibleRegion, GetBounds(aBuilder));
|
|
NS_ASSERTION(r.GetBounds().IsEqualInterior(aListVisibleBounds),
|
|
"bad aListVisibleBounds");
|
|
#endif
|
|
mVisibleRect = aListVisibleBounds;
|
|
bool anyVisible = false;
|
|
|
|
nsAutoTArray<nsDisplayItem*, 512> elements;
|
|
FlattenTo(&elements);
|
|
|
|
bool forceTransparentSurface = false;
|
|
|
|
for (int32_t i = elements.Length() - 1; i >= 0; --i) {
|
|
nsDisplayItem* item = elements[i];
|
|
nsDisplayItem* belowItem = i < 1 ? nullptr : elements[i - 1];
|
|
|
|
if (belowItem && item->TryMerge(aBuilder, belowItem)) {
|
|
belowItem->~nsDisplayItem();
|
|
elements.ReplaceElementsAt(i - 1, 1, item);
|
|
continue;
|
|
}
|
|
|
|
nsDisplayList* list = item->GetList();
|
|
if (list && item->ShouldFlattenAway(aBuilder)) {
|
|
// The elements on the list >= i no longer serve any use.
|
|
elements.SetLength(i);
|
|
list->FlattenTo(&elements);
|
|
i = elements.Length();
|
|
item->~nsDisplayItem();
|
|
continue;
|
|
}
|
|
|
|
nsRect bounds = item->GetBounds(aBuilder, &snap);
|
|
|
|
nsRegion itemVisible;
|
|
if (ForceVisiblityForFixedItem(aBuilder, item)) {
|
|
itemVisible.And(GetDisplayPortBounds(aBuilder, item), bounds);
|
|
} else {
|
|
itemVisible.And(*aVisibleRegion, bounds);
|
|
}
|
|
item->mVisibleRect = itemVisible.GetBounds();
|
|
|
|
if (item->ComputeVisibility(aBuilder, aVisibleRegion, aAllowVisibleRegionExpansion)) {
|
|
anyVisible = true;
|
|
nsRegion opaque = TreatAsOpaque(item, aBuilder);
|
|
// Subtract opaque item from the visible region
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, opaque);
|
|
if (aBuilder->NeedToForceTransparentSurfaceForItem(item) ||
|
|
(list && list->NeedsTransparentSurface())) {
|
|
forceTransparentSurface = true;
|
|
}
|
|
}
|
|
AppendToBottom(item);
|
|
}
|
|
|
|
mIsOpaque = !aVisibleRegion->Intersects(mVisibleRect);
|
|
mForceTransparentSurface = forceTransparentSurface;
|
|
#ifdef DEBUG
|
|
mDidComputeVisibility = true;
|
|
#endif
|
|
return anyVisible;
|
|
}
|
|
|
|
void nsDisplayList::PaintRoot(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx,
|
|
uint32_t aFlags) const {
|
|
SAMPLE_LABEL("nsDisplayList", "PaintRoot");
|
|
PaintForFrame(aBuilder, aCtx, aBuilder->ReferenceFrame(), aFlags);
|
|
}
|
|
|
|
/**
|
|
* 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 ThebesLayers.
|
|
*/
|
|
void nsDisplayList::PaintForFrame(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx,
|
|
nsIFrame* aForFrame,
|
|
uint32_t aFlags) const {
|
|
NS_ASSERTION(mDidComputeVisibility,
|
|
"Must call ComputeVisibility before calling Paint");
|
|
|
|
nsRefPtr<LayerManager> layerManager;
|
|
bool allowRetaining = false;
|
|
bool doBeginTransaction = true;
|
|
if (aFlags & PAINT_USE_WIDGET_LAYERS) {
|
|
nsIFrame* referenceFrame = aBuilder->ReferenceFrame();
|
|
NS_ASSERTION(referenceFrame == nsLayoutUtils::GetDisplayRootFrame(referenceFrame),
|
|
"Reference frame must be a display root for us to use the layer manager");
|
|
nsIWidget* window = referenceFrame->GetNearestWidget();
|
|
if (window) {
|
|
layerManager = window->GetLayerManager(&allowRetaining);
|
|
if (layerManager) {
|
|
doBeginTransaction = !(aFlags & PAINT_EXISTING_TRANSACTION);
|
|
}
|
|
}
|
|
}
|
|
if (!layerManager) {
|
|
if (!aCtx) {
|
|
NS_WARNING("Nowhere to paint into");
|
|
return;
|
|
}
|
|
layerManager = new BasicLayerManager();
|
|
}
|
|
|
|
FrameLayerBuilder *layerBuilder = new FrameLayerBuilder();
|
|
layerBuilder->Init(aBuilder, layerManager);
|
|
|
|
if (aFlags & PAINT_FLUSH_LAYERS) {
|
|
FrameLayerBuilder::InvalidateAllLayers(layerManager);
|
|
}
|
|
|
|
if (doBeginTransaction) {
|
|
if (aCtx) {
|
|
layerManager->BeginTransactionWithTarget(aCtx->ThebesContext());
|
|
} else {
|
|
layerManager->BeginTransaction();
|
|
}
|
|
}
|
|
if (allowRetaining) {
|
|
layerBuilder->DidBeginRetainedLayerTransaction(layerManager);
|
|
}
|
|
|
|
nsPresContext* presContext = aForFrame->PresContext();
|
|
nsIPresShell* presShell = presContext->GetPresShell();
|
|
|
|
nsDisplayItem::ContainerParameters containerParameters
|
|
(presShell->GetXResolution(), presShell->GetYResolution());
|
|
nsRefPtr<ContainerLayer> root = layerBuilder->
|
|
BuildContainerLayerFor(aBuilder, layerManager, aForFrame, nullptr, *this,
|
|
containerParameters, nullptr);
|
|
|
|
if (!root) {
|
|
layerManager->RemoveUserData(&gLayerManagerLayerBuilder);
|
|
return;
|
|
}
|
|
// Root is being scaled up by the X/Y resolution. Scale it back down.
|
|
root->SetPostScale(1.0f/containerParameters.mXScale,
|
|
1.0f/containerParameters.mYScale);
|
|
|
|
ViewID id = presContext->IsRootContentDocument() ? FrameMetrics::ROOT_SCROLL_ID
|
|
: FrameMetrics::NULL_SCROLL_ID;
|
|
|
|
nsIFrame* rootScrollFrame = presShell->GetRootScrollFrame();
|
|
nsRect displayport;
|
|
bool usingDisplayport = false;
|
|
if (rootScrollFrame) {
|
|
nsIContent* content = rootScrollFrame->GetContent();
|
|
if (content) {
|
|
usingDisplayport = nsLayoutUtils::GetDisplayPort(content, &displayport);
|
|
}
|
|
}
|
|
|
|
bool mayHaveTouchListeners = false;
|
|
if (presShell) {
|
|
nsIDocument* document = presShell->GetDocument();
|
|
if (document) {
|
|
nsCOMPtr<nsPIDOMWindow> innerWin(document->GetInnerWindow());
|
|
if (innerWin) {
|
|
mayHaveTouchListeners = innerWin->HasTouchEventListeners();
|
|
}
|
|
}
|
|
}
|
|
|
|
RecordFrameMetrics(aForFrame, rootScrollFrame,
|
|
root, mVisibleRect, mVisibleRect,
|
|
(usingDisplayport ? &displayport : nullptr), id,
|
|
containerParameters, mayHaveTouchListeners);
|
|
if (usingDisplayport &&
|
|
!(root->GetContentFlags() & Layer::CONTENT_OPAQUE)) {
|
|
// See bug 693938, attachment 567017
|
|
NS_WARNING("We don't support transparent content with displayports, force it to be opqaue");
|
|
root->SetContentFlags(Layer::CONTENT_OPAQUE);
|
|
}
|
|
|
|
layerManager->SetRoot(root);
|
|
layerBuilder->WillEndTransaction(layerManager);
|
|
bool temp = aBuilder->SetIsCompositingCheap(layerManager->IsCompositingCheap());
|
|
layerManager->EndTransaction(FrameLayerBuilder::DrawThebesLayer,
|
|
aBuilder, (aFlags & PAINT_NO_COMPOSITE) ? LayerManager::END_NO_COMPOSITE : LayerManager::END_DEFAULT);
|
|
aBuilder->SetIsCompositingCheap(temp);
|
|
layerBuilder->DidEndTransaction(layerManager);
|
|
|
|
if (aFlags & PAINT_FLUSH_LAYERS) {
|
|
FrameLayerBuilder::InvalidateAllLayers(layerManager);
|
|
}
|
|
|
|
nsCSSRendering::DidPaint();
|
|
layerManager->RemoveUserData(&gLayerManagerLayerBuilder);
|
|
}
|
|
|
|
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 = frame->GetParentBox();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// A list of frames, and their z depth. Used for sorting
|
|
// the results of hit testing.
|
|
struct FramesWithDepth
|
|
{
|
|
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->MoveElementsFrom(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;
|
|
if (aRect.Intersects(item->GetBounds(aBuilder, &snap))) {
|
|
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->GetUnderlyingFrame()->Preserves3D()) {
|
|
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(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) &&
|
|
f->GetStyleVisibility()->mPointerEvents != NS_STYLE_POINTER_EVENTS_NONE) {
|
|
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 bool IsContentLEQ(nsDisplayItem* aItem1, nsDisplayItem* aItem2,
|
|
void* aClosure) {
|
|
// These GetUnderlyingFrame calls return non-null because we're only used
|
|
// in sorting
|
|
return nsLayoutUtils::CompareTreePosition(
|
|
aItem1->GetUnderlyingFrame()->GetContent(),
|
|
aItem2->GetUnderlyingFrame()->GetContent(),
|
|
static_cast<nsIContent*>(aClosure)) <= 0;
|
|
}
|
|
|
|
static bool IsZOrderLEQ(nsDisplayItem* aItem1, nsDisplayItem* aItem2,
|
|
void* aClosure) {
|
|
// These GetUnderlyingFrame calls return non-null because we're only used
|
|
// in sorting. Note that we can't just take the difference of the two
|
|
// z-indices here, because that might overflow a 32-bit int.
|
|
int32_t index1 = nsLayoutUtils::GetZIndex(aItem1->GetUnderlyingFrame());
|
|
int32_t index2 = nsLayoutUtils::GetZIndex(aItem2->GetUnderlyingFrame());
|
|
return index1 <= index2;
|
|
}
|
|
|
|
void nsDisplayList::ExplodeAnonymousChildLists(nsDisplayListBuilder* aBuilder) {
|
|
// See if there's anything to do
|
|
bool anyAnonymousItems = false;
|
|
nsDisplayItem* i;
|
|
for (i = GetBottom(); i != nullptr; i = i->GetAbove()) {
|
|
if (!i->GetUnderlyingFrame()) {
|
|
anyAnonymousItems = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!anyAnonymousItems)
|
|
return;
|
|
|
|
nsDisplayList tmp;
|
|
while ((i = RemoveBottom()) != nullptr) {
|
|
if (i->GetUnderlyingFrame()) {
|
|
tmp.AppendToTop(i);
|
|
} else {
|
|
nsDisplayList* list = i->GetList();
|
|
NS_ASSERTION(list, "leaf items can't be anonymous");
|
|
list->ExplodeAnonymousChildLists(aBuilder);
|
|
nsDisplayItem* j;
|
|
while ((j = list->RemoveBottom()) != nullptr) {
|
|
tmp.AppendToTop(static_cast<nsDisplayWrapList*>(i)->
|
|
WrapWithClone(aBuilder, j));
|
|
}
|
|
i->~nsDisplayItem();
|
|
}
|
|
}
|
|
|
|
AppendToTop(&tmp);
|
|
}
|
|
|
|
void nsDisplayList::SortByZOrder(nsDisplayListBuilder* aBuilder,
|
|
nsIContent* aCommonAncestor) {
|
|
Sort(aBuilder, IsZOrderLEQ, aCommonAncestor);
|
|
}
|
|
|
|
void nsDisplayList::SortByContentOrder(nsDisplayListBuilder* aBuilder,
|
|
nsIContent* aCommonAncestor) {
|
|
Sort(aBuilder, IsContentLEQ, aCommonAncestor);
|
|
}
|
|
|
|
void nsDisplayList::Sort(nsDisplayListBuilder* aBuilder,
|
|
SortLEQ aCmp, void* aClosure) {
|
|
ExplodeAnonymousChildLists(aBuilder);
|
|
::Sort(this, Count(), aCmp, aClosure);
|
|
}
|
|
|
|
bool nsDisplayItem::RecomputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion) {
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
|
|
nsRegion itemVisible;
|
|
if (ForceVisiblityForFixedItem(aBuilder, this)) {
|
|
itemVisible.And(GetDisplayPortBounds(aBuilder, this), bounds);
|
|
} else {
|
|
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, nsRect()))
|
|
return false;
|
|
|
|
nsRegion opaque = TreatAsOpaque(this, aBuilder);
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, opaque);
|
|
return true;
|
|
}
|
|
|
|
nsRect
|
|
nsDisplaySolidColor::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
void
|
|
nsDisplaySolidColor::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
aCtx->SetColor(mColor);
|
|
aCtx->FillRect(mVisibleRect);
|
|
}
|
|
|
|
static void
|
|
RegisterThemeGeometry(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
|
|
{
|
|
nsIFrame* displayRoot = nsLayoutUtils::GetDisplayRootFrame(aFrame);
|
|
|
|
for (nsIFrame* f = aFrame; f; f = f->GetParent()) {
|
|
// Bail out if we're in a transformed subtree
|
|
if (f->IsTransformed())
|
|
return;
|
|
// Bail out if we're not in the displayRoot's document
|
|
if (!f->GetParent() && f != displayRoot)
|
|
return;
|
|
}
|
|
|
|
nsRect borderBox(aFrame->GetOffsetTo(displayRoot), aFrame->GetSize());
|
|
aBuilder->RegisterThemeGeometry(aFrame->GetStyleDisplay()->mAppearance,
|
|
borderBox.ToNearestPixels(aFrame->PresContext()->AppUnitsPerDevPixel()));
|
|
}
|
|
|
|
nsDisplayBackground::nsDisplayBackground(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
uint32_t aLayer,
|
|
bool aSkipFixedItemBoundsCheck)
|
|
: nsDisplayItem(aBuilder, aFrame)
|
|
, mIsFixed(false)
|
|
, mIsBottommostLayer(true)
|
|
, mLayer(aLayer)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayBackground);
|
|
const nsStyleDisplay* disp = mFrame->GetStyleDisplay();
|
|
mIsThemed = mFrame->IsThemed(disp, &mThemeTransparency);
|
|
|
|
if (mIsThemed) {
|
|
// Perform necessary RegisterThemeGeometry
|
|
if (disp->mAppearance == NS_THEME_MOZ_MAC_UNIFIED_TOOLBAR ||
|
|
disp->mAppearance == NS_THEME_TOOLBAR) {
|
|
RegisterThemeGeometry(aBuilder, aFrame);
|
|
} else if (disp->mAppearance == NS_THEME_WIN_BORDERLESS_GLASS ||
|
|
disp->mAppearance == NS_THEME_WIN_GLASS) {
|
|
aBuilder->SetGlassDisplayItem(this);
|
|
}
|
|
} else {
|
|
// Set HasFixedItems if we construct a background-attachment:fixed item
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsStyleContext* bgSC;
|
|
bool hasBG = nsCSSRendering::FindBackground(presContext, mFrame, &bgSC);
|
|
if (hasBG) {
|
|
const nsStyleBackground* bg = bgSC->GetStyleBackground();
|
|
if (mLayer != bg->mImageCount - 1) {
|
|
mIsBottommostLayer = false;
|
|
}
|
|
|
|
// Check if this background layer is attachment-fixed
|
|
if (!bg->mLayers[mLayer].mImage.IsEmpty() &&
|
|
bg->mLayers[mLayer].mAttachment == NS_STYLE_BG_ATTACHMENT_FIXED) {
|
|
aBuilder->SetHasFixedItems();
|
|
|
|
// Check whether we should fix to viewport scrolling
|
|
if (bg->mLayers[mLayer].mClip == NS_STYLE_BG_CLIP_BORDER &&
|
|
!nsLayoutUtils::HasNonZeroCorner(mFrame->GetStyleBorder()->mBorderRadius)) {
|
|
if (aSkipFixedItemBoundsCheck) {
|
|
mIsFixed = true;
|
|
} else {
|
|
nsIFrame* rootScrollFrame = presContext->PresShell()->GetRootScrollFrame();
|
|
if (rootScrollFrame) {
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
|
|
// This bounds check prevents an item fixing to the viewport unless it
|
|
// it encompasses the scroll-port. If a fixed background doesn't
|
|
// encompass the scroll-port, it usually means that scrolling will
|
|
// expose a new area of the fixed background and cause a lot of
|
|
// invalidation. This performs badly, and looks especially bad when
|
|
// async scrolling is being used.
|
|
// XXX A better check would be to see if the underlying frame is fixed to
|
|
// the viewport/is the viewport.
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(rootScrollFrame);
|
|
nsRect scrollport(scrollable->GetScrollPortRect().TopLeft() +
|
|
aBuilder->ToReferenceFrame(rootScrollFrame),
|
|
scrollable->GetScrollPositionClampingScrollPortSize());
|
|
|
|
mIsFixed = bounds.Contains(scrollport);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsDisplayBackground::~nsDisplayBackground()
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_DTOR(nsDisplayBackground);
|
|
#endif
|
|
}
|
|
|
|
/*static*/ nsresult
|
|
nsDisplayBackground::AppendBackgroundItemsToTop(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsDisplayList* aList,
|
|
nsDisplayBackground** aBackground)
|
|
{
|
|
nsStyleContext* bgSC;
|
|
const nsStyleBackground* bg = nullptr;
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
if (!aFrame->IsThemed() &&
|
|
nsCSSRendering::FindBackground(presContext, aFrame, &bgSC)) {
|
|
bg = bgSC->GetStyleBackground();
|
|
}
|
|
|
|
// Passing bg == nullptr in this macro will result in one iteration with
|
|
// i = 0.
|
|
bool backgroundSet = !aBackground;
|
|
NS_FOR_VISIBLE_BACKGROUND_LAYERS_BACK_TO_FRONT(i, bg) {
|
|
nsDisplayBackground* bgItem =
|
|
new (aBuilder) nsDisplayBackground(aBuilder, aFrame, i);
|
|
nsresult rv = aList->AppendNewToTop(bgItem);
|
|
if (rv != NS_OK) {
|
|
return rv;
|
|
}
|
|
if (!backgroundSet) {
|
|
*aBackground = bgItem;
|
|
backgroundSet = true;
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
// Helper for RoundedRectIntersectsRect.
|
|
static bool
|
|
CheckCorner(nscoord aXOffset, nscoord aYOffset,
|
|
nscoord aXRadius, nscoord aYRadius)
|
|
{
|
|
NS_ABORT_IF_FALSE(aXOffset > 0 && aYOffset > 0,
|
|
"must not pass nonpositives to CheckCorner");
|
|
NS_ABORT_IF_FALSE(aXRadius >= 0 && aYRadius >= 0,
|
|
"must not pass negatives to CheckCorner");
|
|
|
|
// Avoid floating point math unless we're either (1) within the
|
|
// quarter-ellipse area at the rounded corner or (2) outside the
|
|
// rounding.
|
|
if (aXOffset >= aXRadius || aYOffset >= aYRadius)
|
|
return true;
|
|
|
|
// Convert coordinates to a unit circle with (0,0) as the center of
|
|
// curvature, and see if we're inside the circle or outside.
|
|
float scaledX = float(aXRadius - aXOffset) / float(aXRadius);
|
|
float scaledY = float(aYRadius - aYOffset) / float(aYRadius);
|
|
return scaledX * scaledX + scaledY * scaledY < 1.0f;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return whether any part of aTestRect is inside of the rounded
|
|
* rectangle formed by aBounds and aRadii (which are indexed by the
|
|
* NS_CORNER_* constants in nsStyleConsts.h).
|
|
*
|
|
* See also RoundedRectContainsRect.
|
|
*/
|
|
static bool
|
|
RoundedRectIntersectsRect(const nsRect& aRoundedRect, nscoord aRadii[8],
|
|
const nsRect& aTestRect)
|
|
{
|
|
NS_ABORT_IF_FALSE(aTestRect.Intersects(aRoundedRect),
|
|
"we should already have tested basic rect intersection");
|
|
|
|
// distances from this edge of aRoundedRect to opposite edge of aTestRect,
|
|
// which we know are positive due to the Intersects check above.
|
|
nsMargin insets;
|
|
insets.top = aTestRect.YMost() - aRoundedRect.y;
|
|
insets.right = aRoundedRect.XMost() - aTestRect.x;
|
|
insets.bottom = aRoundedRect.YMost() - aTestRect.y;
|
|
insets.left = aTestRect.XMost() - aRoundedRect.x;
|
|
|
|
// Check whether the bottom-right corner of aTestRect is inside the
|
|
// top left corner of aBounds when rounded by aRadii, etc. If any
|
|
// corner is not, then fail; otherwise succeed.
|
|
return CheckCorner(insets.left, insets.top,
|
|
aRadii[NS_CORNER_TOP_LEFT_X],
|
|
aRadii[NS_CORNER_TOP_LEFT_Y]) &&
|
|
CheckCorner(insets.right, insets.top,
|
|
aRadii[NS_CORNER_TOP_RIGHT_X],
|
|
aRadii[NS_CORNER_TOP_RIGHT_Y]) &&
|
|
CheckCorner(insets.right, insets.bottom,
|
|
aRadii[NS_CORNER_BOTTOM_RIGHT_X],
|
|
aRadii[NS_CORNER_BOTTOM_RIGHT_Y]) &&
|
|
CheckCorner(insets.left, insets.bottom,
|
|
aRadii[NS_CORNER_BOTTOM_LEFT_X],
|
|
aRadii[NS_CORNER_BOTTOM_LEFT_Y]);
|
|
}
|
|
|
|
// 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) ||
|
|
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
|
|
nsDisplayBackground::IsSingleFixedPositionImage(nsDisplayListBuilder* aBuilder, const nsRect& aClipRect)
|
|
{
|
|
if (mIsThemed)
|
|
return false;
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsStyleContext* bgSC;
|
|
if (!nsCSSRendering::FindBackground(presContext, mFrame, &bgSC))
|
|
return false;
|
|
|
|
bool drawBackgroundImage;
|
|
bool drawBackgroundColor;
|
|
nsCSSRendering::DetermineBackgroundColor(presContext,
|
|
bgSC,
|
|
mFrame,
|
|
drawBackgroundImage,
|
|
drawBackgroundColor);
|
|
|
|
// For now we don't know how to draw image layers with a background color.
|
|
if (!drawBackgroundImage || drawBackgroundColor)
|
|
return false;
|
|
|
|
const nsStyleBackground *bg = bgSC->GetStyleBackground();
|
|
|
|
// We could pretty easily support multiple image layers, but for now we
|
|
// just punt here.
|
|
if (bg->mLayers.Length() != 1)
|
|
return false;
|
|
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderArea = nsRect(offset, mFrame->GetSize());
|
|
|
|
const nsStyleBackground::Layer &layer = bg->mLayers[0];
|
|
|
|
if (layer.mAttachment != NS_STYLE_BG_ATTACHMENT_FIXED)
|
|
return false;
|
|
|
|
nsBackgroundLayerState state =
|
|
nsCSSRendering::PrepareBackgroundLayer(presContext,
|
|
mFrame,
|
|
flags,
|
|
borderArea,
|
|
aClipRect,
|
|
*bg,
|
|
layer);
|
|
|
|
nsImageRenderer* imageRenderer = &state.mImageRenderer;
|
|
// We only care about images here, not gradients.
|
|
if (!imageRenderer->IsRasterImage())
|
|
return false;
|
|
|
|
int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
|
|
mDestRect = nsLayoutUtils::RectToGfxRect(state.mFillArea, appUnitsPerDevPixel);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackground::TryOptimizeToImageLayer(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (mIsThemed)
|
|
return false;
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsStyleContext* bgSC;
|
|
if (!nsCSSRendering::FindBackground(presContext, mFrame, &bgSC))
|
|
return false;
|
|
|
|
bool drawBackgroundImage;
|
|
bool drawBackgroundColor;
|
|
nsCSSRendering::DetermineBackgroundColor(presContext,
|
|
bgSC,
|
|
mFrame,
|
|
drawBackgroundImage,
|
|
drawBackgroundColor);
|
|
|
|
// For now we don't know how to draw image layers with a background color.
|
|
if (!drawBackgroundImage || drawBackgroundColor)
|
|
return false;
|
|
|
|
const nsStyleBackground *bg = bgSC->GetStyleBackground();
|
|
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderArea = nsRect(offset, mFrame->GetSize());
|
|
|
|
const nsStyleBackground::Layer &layer = bg->mLayers[mLayer];
|
|
|
|
nsBackgroundLayerState state =
|
|
nsCSSRendering::PrepareBackgroundLayer(presContext,
|
|
mFrame,
|
|
flags,
|
|
borderArea,
|
|
borderArea,
|
|
*bg,
|
|
layer);
|
|
|
|
nsImageRenderer* imageRenderer = &state.mImageRenderer;
|
|
// We only care about images here, not gradients.
|
|
if (imageRenderer->IsRasterImage())
|
|
return false;
|
|
|
|
nsRefPtr<ImageContainer> imageContainer = imageRenderer->GetContainer();
|
|
// Image is not ready to be made into a layer yet
|
|
if (!imageContainer)
|
|
return false;
|
|
|
|
// We currently can't handle tiled or partial backgrounds.
|
|
if (!state.mDestArea.IsEqualEdges(state.mFillArea)) {
|
|
return false;
|
|
}
|
|
|
|
// Sub-pixel alignment is hard, lets punt on that.
|
|
if (state.mAnchor != nsPoint(0.0f, 0.0f)) {
|
|
return false;
|
|
}
|
|
|
|
int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
|
|
mDestRect = nsLayoutUtils::RectToGfxRect(state.mDestArea, appUnitsPerDevPixel);
|
|
mImageContainer = imageContainer;
|
|
|
|
// Ok, we can turn this into a layer if needed.
|
|
return true;
|
|
}
|
|
|
|
LayerState
|
|
nsDisplayBackground::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const FrameLayerBuilder::ContainerParameters& aParameters)
|
|
{
|
|
if (!aManager->IsCompositingCheap() ||
|
|
!nsLayoutUtils::GPUImageScalingEnabled() ||
|
|
!TryOptimizeToImageLayer(aBuilder)) {
|
|
return LAYER_NONE;
|
|
}
|
|
|
|
gfxSize imageSize = mImageContainer->GetCurrentSize();
|
|
NS_ASSERTION(imageSize.width != 0 && imageSize.height != 0, "Invalid image size!");
|
|
|
|
gfxRect destRect = mDestRect;
|
|
|
|
destRect.width *= aParameters.mXScale;
|
|
destRect.height *= aParameters.mYScale;
|
|
|
|
// Calculate the scaling factor for the frame.
|
|
gfxSize scale = gfxSize(destRect.width / imageSize.width, destRect.height / imageSize.height);
|
|
|
|
// If we are not scaling at all, no point in separating this into a layer.
|
|
if (scale.width == 1.0f && scale.height == 1.0f) {
|
|
return LAYER_INACTIVE;
|
|
}
|
|
|
|
// If the target size is pretty small, no point in using a layer.
|
|
if (destRect.width * destRect.height < 64 * 64) {
|
|
return LAYER_INACTIVE;
|
|
}
|
|
|
|
return LAYER_ACTIVE;
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayBackground::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aParameters)
|
|
{
|
|
nsRefPtr<ImageLayer> layer = aManager->CreateImageLayer();
|
|
layer->SetContainer(mImageContainer);
|
|
ConfigureLayer(layer);
|
|
return layer.forget();
|
|
}
|
|
|
|
void
|
|
nsDisplayBackground::ConfigureLayer(ImageLayer* aLayer)
|
|
{
|
|
aLayer->SetFilter(nsLayoutUtils::GetGraphicsFilterForFrame(mFrame));
|
|
|
|
gfxIntSize imageSize = mImageContainer->GetCurrentSize();
|
|
NS_ASSERTION(imageSize.width != 0 && imageSize.height != 0, "Invalid image size!");
|
|
|
|
gfxMatrix transform;
|
|
transform.Translate(mDestRect.TopLeft());
|
|
transform.Scale(mDestRect.width/imageSize.width,
|
|
mDestRect.height/imageSize.height);
|
|
aLayer->SetBaseTransform(gfx3DMatrix::From2D(transform));
|
|
aLayer->SetVisibleRegion(nsIntRect(0, 0, imageSize.width, imageSize.height));
|
|
}
|
|
|
|
void
|
|
nsDisplayBackground::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
if (mIsThemed) {
|
|
// For theme backgrounds, assume that any point in our border rect is a hit.
|
|
if (!nsRect(ToReferenceFrame(), mFrame->GetSize()).Intersects(aRect))
|
|
return;
|
|
} else {
|
|
if (!RoundedBorderIntersectsRect(mFrame, ToReferenceFrame(), aRect)) {
|
|
// aRect doesn't intersect our border-radius curve.
|
|
return;
|
|
}
|
|
}
|
|
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackground::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion)
|
|
{
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion,
|
|
aAllowVisibleRegionExpansion)) {
|
|
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.
|
|
nsStyleContext* bgSC;
|
|
return mIsThemed ||
|
|
nsCSSRendering::FindBackground(mFrame->PresContext(), mFrame, &bgSC);
|
|
}
|
|
|
|
nsRegion
|
|
nsDisplayBackground::GetInsideClipRegion(nsPresContext* aPresContext,
|
|
uint8_t aClip, const nsRect& aRect,
|
|
bool* aSnap)
|
|
{
|
|
nsRegion result;
|
|
if (aRect.IsEmpty())
|
|
return result;
|
|
|
|
nscoord radii[8];
|
|
nsRect clipRect;
|
|
bool haveRadii;
|
|
switch (aClip) {
|
|
case NS_STYLE_BG_CLIP_BORDER:
|
|
haveRadii = mFrame->GetBorderRadii(radii);
|
|
clipRect = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
break;
|
|
case NS_STYLE_BG_CLIP_PADDING:
|
|
haveRadii = mFrame->GetPaddingBoxBorderRadii(radii);
|
|
clipRect = mFrame->GetPaddingRect() - mFrame->GetPosition() + ToReferenceFrame();
|
|
break;
|
|
case NS_STYLE_BG_CLIP_CONTENT:
|
|
haveRadii = mFrame->GetContentBoxBorderRadii(radii);
|
|
clipRect = mFrame->GetContentRect() - mFrame->GetPosition() + ToReferenceFrame();
|
|
break;
|
|
default:
|
|
NS_NOTREACHED("Unknown clip type");
|
|
return result;
|
|
}
|
|
|
|
if (haveRadii) {
|
|
*aSnap = false;
|
|
result = nsLayoutUtils::RoundedRectIntersectRect(clipRect, radii, aRect);
|
|
} else {
|
|
result = clipRect.Intersect(aRect);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsRegion
|
|
nsDisplayBackground::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) {
|
|
nsRegion result;
|
|
*aSnap = false;
|
|
// theme background overrides any other background
|
|
if (mIsThemed) {
|
|
if (mThemeTransparency == nsITheme::eOpaque) {
|
|
result = GetBounds(aBuilder, aSnap);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsStyleContext* bgSC;
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
if (!nsCSSRendering::FindBackground(presContext, mFrame, &bgSC))
|
|
return result;
|
|
const nsStyleBackground* bg = bgSC->GetStyleBackground();
|
|
const nsStyleBackground::Layer& bottomLayer = bg->BottomLayer();
|
|
|
|
*aSnap = true;
|
|
|
|
nsRect borderBox = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
if (mIsBottommostLayer && NS_GET_A(bg->mBackgroundColor) == 255 &&
|
|
!nsCSSRendering::IsCanvasFrame(mFrame)) {
|
|
result = GetInsideClipRegion(presContext, bottomLayer.mClip, borderBox, aSnap);
|
|
}
|
|
|
|
// For policies other than EACH_BOX, 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 (bg->mBackgroundInlinePolicy == NS_STYLE_BG_INLINE_POLICY_EACH_BOX ||
|
|
(!mFrame->GetPrevContinuation() && !mFrame->GetNextContinuation())) {
|
|
const nsStyleBackground::Layer& layer = bg->mLayers[mLayer];
|
|
if (layer.mImage.IsOpaque()) {
|
|
nsRect r = nsCSSRendering::GetBackgroundLayerRect(presContext, mFrame,
|
|
borderBox, *bg, layer);
|
|
result.Or(result, GetInsideClipRegion(presContext, layer.mClip, r, aSnap));
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackground::IsUniform(nsDisplayListBuilder* aBuilder, nscolor* aColor) {
|
|
// theme background overrides any other background
|
|
if (mIsThemed) {
|
|
const nsStyleDisplay* disp = mFrame->GetStyleDisplay();
|
|
if (disp->mAppearance == NS_THEME_WIN_BORDERLESS_GLASS ||
|
|
disp->mAppearance == NS_THEME_WIN_GLASS) {
|
|
*aColor = NS_RGBA(0,0,0,0);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsStyleContext *bgSC;
|
|
bool hasBG =
|
|
nsCSSRendering::FindBackground(mFrame->PresContext(), mFrame, &bgSC);
|
|
if (!hasBG) {
|
|
*aColor = NS_RGBA(0,0,0,0);
|
|
return true;
|
|
}
|
|
const nsStyleBackground* bg = bgSC->GetStyleBackground();
|
|
if (bg->BottomLayer().mImage.IsEmpty() &&
|
|
bg->mImageCount == 1 &&
|
|
!nsLayoutUtils::HasNonZeroCorner(mFrame->GetStyleBorder()->mBorderRadius) &&
|
|
bg->BottomLayer().mClip == NS_STYLE_BG_CLIP_BORDER) {
|
|
// Canvas frames don't actually render their background color, since that
|
|
// gets propagated to the solid color of the viewport
|
|
// (see nsCSSRendering::PaintBackgroundWithSC)
|
|
*aColor = nsCSSRendering::IsCanvasFrame(mFrame) ? NS_RGBA(0,0,0,0)
|
|
: bg->mBackgroundColor;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackground::IsVaryingRelativeToMovingFrame(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame)
|
|
{
|
|
// theme background overrides any other background and is never fixed
|
|
if (mIsThemed)
|
|
return false;
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsStyleContext *bgSC;
|
|
bool hasBG =
|
|
nsCSSRendering::FindBackground(presContext, mFrame, &bgSC);
|
|
if (!hasBG)
|
|
return false;
|
|
const nsStyleBackground* bg = bgSC->GetStyleBackground();
|
|
if (!bg->HasFixedBackground())
|
|
return false;
|
|
|
|
// If aFrame is mFrame or an ancestor in this document, and aFrame is
|
|
// not the viewport frame, then moving aFrame will move mFrame
|
|
// relative to the viewport, so our fixed-pos background will change.
|
|
return aFrame->GetParent() &&
|
|
(aFrame == mFrame ||
|
|
nsLayoutUtils::IsProperAncestorFrame(aFrame, mFrame));
|
|
}
|
|
|
|
bool
|
|
nsDisplayBackground::ShouldFixToViewport(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
return mIsFixed;
|
|
}
|
|
|
|
void
|
|
nsDisplayBackground::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
|
|
nsPoint offset = ToReferenceFrame();
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
nsDisplayItem* nextItem = GetAbove();
|
|
if (nextItem && nextItem->GetUnderlyingFrame() == mFrame &&
|
|
nextItem->GetType() == TYPE_BORDER) {
|
|
flags |= nsCSSRendering::PAINTBG_WILL_PAINT_BORDER;
|
|
}
|
|
nsCSSRendering::PaintBackground(mFrame->PresContext(), *aCtx, mFrame,
|
|
mVisibleRect,
|
|
nsRect(offset, mFrame->GetSize()),
|
|
flags, nullptr, mLayer);
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBackground::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
nsRect r(nsPoint(0,0), mFrame->GetSize());
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
|
|
if (mIsThemed) {
|
|
presContext->GetTheme()->
|
|
GetWidgetOverflow(presContext->DeviceContext(), mFrame,
|
|
mFrame->GetStyleDisplay()->mAppearance, &r);
|
|
}
|
|
|
|
*aSnap = true;
|
|
return r + ToReferenceFrame();
|
|
}
|
|
|
|
uint32_t
|
|
nsDisplayBackground::GetPerFrameKey()
|
|
{
|
|
return (mLayer << nsDisplayItem::TYPE_BITS) |
|
|
nsDisplayItem::GetPerFrameKey();
|
|
}
|
|
|
|
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->GetStyleContext());
|
|
}
|
|
|
|
bool
|
|
nsDisplayOutline::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion,
|
|
aAllowVisibleRegionExpansion)) {
|
|
return false;
|
|
}
|
|
|
|
const nsStyleOutline* outline = mFrame->GetStyleOutline();
|
|
nsRect borderBox(ToReferenceFrame(), mFrame->GetSize());
|
|
if (borderBox.Contains(aVisibleRegion->GetBounds()) &&
|
|
!nsLayoutUtils::HasNonZeroCorner(outline->mOutlineRadius)) {
|
|
if (outline->mOutlineOffset >= 0) {
|
|
// the visible region is entirely inside the border-rect, and the outline
|
|
// isn't rendered inside the border-rect, so the outline is not visible
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
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
|
|
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, mFrame, ToReferenceFrame());
|
|
}
|
|
|
|
bool
|
|
nsDisplayBorder::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion,
|
|
aAllowVisibleRegionExpansion)) {
|
|
return false;
|
|
}
|
|
|
|
nsRect paddingRect = mFrame->GetPaddingRect() - mFrame->GetPosition() +
|
|
ToReferenceFrame();
|
|
const nsStyleBorder *styleBorder;
|
|
if (paddingRect.Contains(aVisibleRegion->GetBounds()) &&
|
|
!(styleBorder = mFrame->GetStyleBorder())->IsBorderImageLoaded() &&
|
|
!nsLayoutUtils::HasNonZeroCorner(styleBorder->mBorderRadius)) {
|
|
// the visible region 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 false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsDisplayBorder::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsCSSRendering::PaintBorder(mFrame->PresContext(), *aCtx, mFrame,
|
|
mVisibleRect,
|
|
nsRect(offset, mFrame->GetSize()),
|
|
mFrame->GetStyleContext(),
|
|
mFrame->GetSkipSides());
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBorder::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap)
|
|
{
|
|
nsRect borderBounds(ToReferenceFrame(), mFrame->GetSize());
|
|
borderBounds.Inflate(mFrame->GetStyleBorder()->GetImageOutset());
|
|
*aSnap = true;
|
|
return borderBounds;
|
|
}
|
|
|
|
// 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 = nsRect(offset, mFrame->GetSize());
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
nsAutoTArray<nsRect,10> rects;
|
|
ComputeDisjointRectangles(mVisibleRegion, &rects);
|
|
|
|
SAMPLE_LABEL("nsDisplayBoxShadowOuter", "Paint");
|
|
for (uint32_t i = 0; i < rects.Length(); ++i) {
|
|
aCtx->PushState();
|
|
aCtx->IntersectClip(rects[i]);
|
|
nsCSSRendering::PaintBoxShadowOuter(presContext, *aCtx, mFrame,
|
|
borderRect, rects[i]);
|
|
aCtx->PopState();
|
|
}
|
|
}
|
|
|
|
nsRect
|
|
nsDisplayBoxShadowOuter::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
*aSnap = false;
|
|
return mFrame->GetVisualOverflowRectRelativeToSelf() + ToReferenceFrame();
|
|
}
|
|
|
|
bool
|
|
nsDisplayBoxShadowOuter::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion,
|
|
aAllowVisibleRegionExpansion)) {
|
|
return false;
|
|
}
|
|
|
|
// Store the actual visible region
|
|
mVisibleRegion.And(*aVisibleRegion, mVisibleRect);
|
|
|
|
nsPoint origin = ToReferenceFrame();
|
|
nsRect visibleBounds = aVisibleRegion->GetBounds();
|
|
nsRect frameRect(origin, mFrame->GetSize());
|
|
if (!frameRect.Contains(visibleBounds))
|
|
return true;
|
|
|
|
// 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 false;
|
|
|
|
return !RoundedRectContainsRect(frameRect, twipsRadii, visibleBounds);
|
|
}
|
|
|
|
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);
|
|
|
|
SAMPLE_LABEL("nsDisplayBoxShadowInner", "Paint");
|
|
for (uint32_t i = 0; i < rects.Length(); ++i) {
|
|
aCtx->PushState();
|
|
aCtx->IntersectClip(rects[i]);
|
|
nsCSSRendering::PaintBoxShadowInner(presContext, *aCtx, mFrame,
|
|
borderRect, rects[i]);
|
|
aCtx->PopState();
|
|
}
|
|
}
|
|
|
|
bool
|
|
nsDisplayBoxShadowInner::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
if (!nsDisplayItem::ComputeVisibility(aBuilder, aVisibleRegion,
|
|
aAllowVisibleRegionExpansion)) {
|
|
return false;
|
|
}
|
|
|
|
// Store the actual visible region
|
|
mVisibleRegion.And(*aVisibleRegion, mVisibleRect);
|
|
return true;
|
|
}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayItem(aBuilder, aFrame) {
|
|
mList.AppendToTop(aList);
|
|
UpdateBounds(aBuilder);
|
|
}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayItem* aItem)
|
|
: nsDisplayItem(aBuilder, aFrame) {
|
|
mList.AppendToTop(aItem);
|
|
UpdateBounds(aBuilder);
|
|
}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayItem* aItem,
|
|
const nsPoint& aToReferenceFrame)
|
|
: nsDisplayItem(aBuilder, aFrame, aToReferenceFrame) {
|
|
mList.AppendToTop(aItem);
|
|
mBounds = mList.GetBounds(aBuilder);
|
|
}
|
|
|
|
nsDisplayWrapList::~nsDisplayWrapList() {
|
|
mList.DeleteAll();
|
|
}
|
|
|
|
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,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
return mList.ComputeVisibilityForSublist(aBuilder, aVisibleRegion,
|
|
mVisibleRect,
|
|
aAllowVisibleRegionExpansion);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
bool nsDisplayWrapList::IsVaryingRelativeToMovingFrame(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame) {
|
|
NS_WARNING("nsDisplayWrapList::IsVaryingRelativeToMovingFrame called unexpectedly");
|
|
// We could try to do something but let's conservatively just return true.
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayWrapList::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
NS_ERROR("nsDisplayWrapList should have been flattened away for painting");
|
|
}
|
|
|
|
bool nsDisplayWrapList::ChildrenCanBeInactive(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aParameters,
|
|
const nsDisplayList& aList,
|
|
nsIFrame* aActiveScrolledRoot) {
|
|
for (nsDisplayItem* i = aList.GetBottom(); i; i = i->GetAbove()) {
|
|
nsIFrame* f = i->GetUnderlyingFrame();
|
|
if (f) {
|
|
nsIFrame* activeScrolledRoot =
|
|
nsLayoutUtils::GetActiveScrolledRootFor(f, nullptr);
|
|
if (activeScrolledRoot != aActiveScrolledRoot)
|
|
return false;
|
|
}
|
|
|
|
LayerState state = i->GetLayerState(aBuilder, aManager, aParameters);
|
|
if (state == LAYER_ACTIVE || state == LAYER_ACTIVE_FORCE)
|
|
return false;
|
|
if (state == LAYER_NONE) {
|
|
nsDisplayList* list = i->GetList();
|
|
if (list && !ChildrenCanBeInactive(aBuilder, aManager, aParameters, *list, aActiveScrolledRoot))
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsRect nsDisplayWrapList::GetComponentAlphaBounds(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
nsRect bounds;
|
|
for (nsDisplayItem* i = mList.GetBottom(); i; i = i->GetAbove()) {
|
|
bounds.UnionRect(bounds, i->GetComponentAlphaBounds(aBuilder));
|
|
}
|
|
return bounds;
|
|
}
|
|
|
|
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)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList) {
|
|
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;
|
|
// We are never opaque, if our opacity was < 1 then we wouldn't have
|
|
// been created.
|
|
return nsRegion();
|
|
}
|
|
|
|
// nsDisplayOpacity uses layers for rendering
|
|
already_AddRefed<Layer>
|
|
nsDisplayOpacity::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aContainerParameters) {
|
|
nsRefPtr<Layer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, mList,
|
|
aContainerParameters, nullptr);
|
|
if (!container)
|
|
return nullptr;
|
|
|
|
container->SetOpacity(mFrame->GetStyleDisplay()->mOpacity);
|
|
AddAnimationsAndTransitionsToLayer(container, aBuilder,
|
|
this, 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->GetUnderlyingFrame()->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);
|
|
}
|
|
|
|
nsDisplayItem::LayerState
|
|
nsDisplayOpacity::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aParameters) {
|
|
if (mFrame->AreLayersMarkedActive(nsChangeHint_UpdateOpacityLayer) &&
|
|
!IsItemTooSmallForActiveLayer(this))
|
|
return LAYER_ACTIVE;
|
|
if (mFrame->GetContent()) {
|
|
if (nsLayoutUtils::HasAnimationsForCompositor(mFrame->GetContent(),
|
|
eCSSProperty_opacity)) {
|
|
return LAYER_ACTIVE;
|
|
}
|
|
}
|
|
nsIFrame* activeScrolledRoot =
|
|
nsLayoutUtils::GetActiveScrolledRootFor(mFrame, nullptr);
|
|
return !ChildrenCanBeInactive(aBuilder, aManager, aParameters, mList, activeScrolledRoot)
|
|
? LAYER_ACTIVE : LAYER_INACTIVE;
|
|
}
|
|
|
|
bool
|
|
nsDisplayOpacity::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
// 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.
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
nsRegion visibleUnderChildren;
|
|
visibleUnderChildren.And(*aVisibleRegion, bounds);
|
|
nsRect allowExpansion = bounds.Intersect(aAllowVisibleRegionExpansion);
|
|
return
|
|
nsDisplayWrapList::ComputeVisibility(aBuilder, &visibleUnderChildren,
|
|
allowExpansion);
|
|
}
|
|
|
|
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->GetUnderlyingFrame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
MergeFromTrackingMergedFrames(static_cast<nsDisplayOpacity*>(aItem));
|
|
return true;
|
|
}
|
|
|
|
nsDisplayOwnLayer::nsDisplayOwnLayer(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList) {
|
|
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 ContainerParameters& aContainerParameters) {
|
|
nsRefPtr<Layer> layer = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, mList,
|
|
aContainerParameters, nullptr);
|
|
return layer.forget();
|
|
}
|
|
|
|
nsDisplayFixedPosition::nsDisplayFixedPosition(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsIFrame* aFixedPosFrame,
|
|
nsDisplayList* aList)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList)
|
|
, mFixedPosFrame(aFixedPosFrame) {
|
|
MOZ_COUNT_CTOR(nsDisplayFixedPosition);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayFixedPosition::~nsDisplayFixedPosition() {
|
|
MOZ_COUNT_DTOR(nsDisplayFixedPosition);
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayFixedPosition::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aContainerParameters) {
|
|
nsRefPtr<Layer> layer =
|
|
nsDisplayOwnLayer::BuildLayer(aBuilder, aManager, aContainerParameters);
|
|
|
|
// Work out the anchor point for this fixed position layer. We assume that
|
|
// any positioning set (left/top/right/bottom) indicates that the
|
|
// corresponding side of its container should be the anchor point,
|
|
// defaulting to top-left.
|
|
nsIFrame* viewportFrame = mFixedPosFrame->GetParent();
|
|
nsPresContext *presContext = viewportFrame->PresContext();
|
|
|
|
// Fixed position frames are reflowed into the scroll-port size if one has
|
|
// been set.
|
|
nsSize containingBlockSize = viewportFrame->GetSize();
|
|
if (presContext->PresShell()->IsScrollPositionClampingScrollPortSizeSet()) {
|
|
containingBlockSize = presContext->PresShell()->
|
|
GetScrollPositionClampingScrollPortSize();
|
|
}
|
|
|
|
// Find out the rect of the viewport frame relative to the reference frame.
|
|
// This, in conjunction with the container scale, will correspond to the
|
|
// coordinate-space of the built layer.
|
|
float factor = presContext->AppUnitsPerDevPixel();
|
|
nsPoint origin = aBuilder->ToReferenceFrame(viewportFrame);
|
|
gfxRect anchorRect(NSAppUnitsToFloatPixels(origin.x, factor) *
|
|
aContainerParameters.mXScale,
|
|
NSAppUnitsToFloatPixels(origin.y, factor) *
|
|
aContainerParameters.mYScale,
|
|
NSAppUnitsToFloatPixels(containingBlockSize.width, factor) *
|
|
aContainerParameters.mXScale,
|
|
NSAppUnitsToFloatPixels(containingBlockSize.height, factor) *
|
|
aContainerParameters.mYScale);
|
|
|
|
gfxPoint anchor(anchorRect.x, anchorRect.y);
|
|
|
|
const nsStylePosition* position = mFixedPosFrame->GetStylePosition();
|
|
if (position->mOffset.GetRightUnit() != eStyleUnit_Auto)
|
|
anchor.x = anchorRect.XMost();
|
|
if (position->mOffset.GetBottomUnit() != eStyleUnit_Auto)
|
|
anchor.y = anchorRect.YMost();
|
|
|
|
layer->SetFixedPositionAnchor(anchor);
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
bool nsDisplayFixedPosition::TryMerge(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem) {
|
|
if (aItem->GetType() != TYPE_FIXED_POSITION)
|
|
return false;
|
|
// Items with the same fixed position frame can be merged.
|
|
nsDisplayFixedPosition* other = static_cast<nsDisplayFixedPosition*>(aItem);
|
|
if (other->mFixedPosFrame != mFixedPosFrame)
|
|
return false;
|
|
MergeFromTrackingMergedFrames(other);
|
|
return true;
|
|
}
|
|
|
|
nsDisplayScrollLayer::nsDisplayScrollLayer(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList,
|
|
nsIFrame* aForFrame,
|
|
nsIFrame* aScrolledFrame,
|
|
nsIFrame* aScrollFrame)
|
|
: nsDisplayWrapList(aBuilder, aForFrame, aList)
|
|
, mScrollFrame(aScrollFrame)
|
|
, mScrolledFrame(aScrolledFrame)
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_CTOR(nsDisplayScrollLayer);
|
|
#endif
|
|
|
|
NS_ASSERTION(mScrolledFrame && mScrolledFrame->GetContent(),
|
|
"Need a child frame with content");
|
|
}
|
|
|
|
nsDisplayScrollLayer::nsDisplayScrollLayer(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem,
|
|
nsIFrame* aForFrame,
|
|
nsIFrame* aScrolledFrame,
|
|
nsIFrame* aScrollFrame)
|
|
: nsDisplayWrapList(aBuilder, aForFrame, aItem)
|
|
, mScrollFrame(aScrollFrame)
|
|
, mScrolledFrame(aScrolledFrame)
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_CTOR(nsDisplayScrollLayer);
|
|
#endif
|
|
|
|
NS_ASSERTION(mScrolledFrame && mScrolledFrame->GetContent(),
|
|
"Need a child frame with content");
|
|
}
|
|
|
|
nsDisplayScrollLayer::nsDisplayScrollLayer(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aForFrame,
|
|
nsIFrame* aScrolledFrame,
|
|
nsIFrame* aScrollFrame)
|
|
: nsDisplayWrapList(aBuilder, aForFrame)
|
|
, mScrollFrame(aScrollFrame)
|
|
, mScrolledFrame(aScrolledFrame)
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_CTOR(nsDisplayScrollLayer);
|
|
#endif
|
|
|
|
NS_ASSERTION(mScrolledFrame && mScrolledFrame->GetContent(),
|
|
"Need a child frame with content");
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayScrollLayer::~nsDisplayScrollLayer()
|
|
{
|
|
MOZ_COUNT_DTOR(nsDisplayScrollLayer);
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplayScrollLayer::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aContainerParameters) {
|
|
nsRefPtr<ContainerLayer> layer = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, mList,
|
|
aContainerParameters, nullptr);
|
|
|
|
// Get the already set unique ID for scrolling this content remotely.
|
|
// Or, if not set, generate a new ID.
|
|
nsIContent* content = mScrolledFrame->GetContent();
|
|
ViewID scrollId = nsLayoutUtils::FindIDFor(content);
|
|
|
|
nsRect viewport = mScrollFrame->GetRect() -
|
|
mScrollFrame->GetPosition() +
|
|
aBuilder->ToReferenceFrame(mScrollFrame);
|
|
|
|
bool usingDisplayport = false;
|
|
nsRect displayport;
|
|
if (content) {
|
|
usingDisplayport = nsLayoutUtils::GetDisplayPort(content, &displayport);
|
|
}
|
|
RecordFrameMetrics(mScrolledFrame, mScrollFrame, layer, mVisibleRect, viewport,
|
|
(usingDisplayport ? &displayport : nullptr), scrollId,
|
|
aContainerParameters, false);
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
bool
|
|
nsDisplayScrollLayer::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion)
|
|
{
|
|
nsRect displayport;
|
|
if (nsLayoutUtils::GetDisplayPort(mScrolledFrame->GetContent(), &displayport)) {
|
|
// 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.
|
|
|
|
nsRegion childVisibleRegion = displayport + aBuilder->ToReferenceFrame(mScrollFrame);
|
|
|
|
nsRect boundedRect =
|
|
childVisibleRegion.GetBounds().Intersect(mList.GetBounds(aBuilder));
|
|
nsRect allowExpansion = boundedRect.Intersect(aAllowVisibleRegionExpansion);
|
|
bool visible = mList.ComputeVisibilityForSublist(
|
|
aBuilder, &childVisibleRegion, boundedRect, allowExpansion);
|
|
mVisibleRect = boundedRect;
|
|
|
|
return visible;
|
|
|
|
} else {
|
|
return nsDisplayWrapList::ComputeVisibility(aBuilder, aVisibleRegion,
|
|
aAllowVisibleRegionExpansion);
|
|
}
|
|
}
|
|
|
|
LayerState
|
|
nsDisplayScrollLayer::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aParameters)
|
|
{
|
|
// Force this as a layer so we can scroll asynchronously.
|
|
// This causes incorrect rendering for rounded clips!
|
|
return LAYER_ACTIVE_FORCE;
|
|
}
|
|
|
|
bool
|
|
nsDisplayScrollLayer::TryMerge(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem)
|
|
{
|
|
if (aItem->GetType() != TYPE_SCROLL_LAYER) {
|
|
return false;
|
|
}
|
|
|
|
nsDisplayScrollLayer* other = static_cast<nsDisplayScrollLayer*>(aItem);
|
|
if (other->mScrolledFrame != this->mScrolledFrame) {
|
|
return false;
|
|
}
|
|
|
|
FrameProperties props = mScrolledFrame->Properties();
|
|
props.Set(nsIFrame::ScrollLayerCount(),
|
|
reinterpret_cast<void*>(GetScrollLayerCount() - 1));
|
|
|
|
MergeFromTrackingMergedFrames(other);
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsDisplayScrollLayer::ShouldFlattenAway(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
return GetScrollLayerCount() > 1;
|
|
}
|
|
|
|
intptr_t
|
|
nsDisplayScrollLayer::GetScrollLayerCount()
|
|
{
|
|
FrameProperties props = mScrolledFrame->Properties();
|
|
#ifdef DEBUG
|
|
bool hasCount = false;
|
|
intptr_t result = reinterpret_cast<intptr_t>(
|
|
props.Get(nsIFrame::ScrollLayerCount(), &hasCount));
|
|
// If this aborts, then the property was either not added before scroll
|
|
// layers were created or the property was deleted to early. If the latter,
|
|
// make sure that nsDisplayScrollInfoLayer is on the bottom of the list so
|
|
// that it is processed last.
|
|
NS_ABORT_IF_FALSE(hasCount, "nsDisplayScrollLayer should always be defined");
|
|
return result;
|
|
#else
|
|
return reinterpret_cast<intptr_t>(props.Get(nsIFrame::ScrollLayerCount()));
|
|
#endif
|
|
}
|
|
|
|
intptr_t
|
|
nsDisplayScrollLayer::RemoveScrollLayerCount()
|
|
{
|
|
intptr_t result = GetScrollLayerCount();
|
|
FrameProperties props = mScrolledFrame->Properties();
|
|
props.Remove(nsIFrame::ScrollLayerCount());
|
|
return result;
|
|
}
|
|
|
|
|
|
nsDisplayScrollInfoLayer::nsDisplayScrollInfoLayer(
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aScrolledFrame,
|
|
nsIFrame* aScrollFrame)
|
|
: nsDisplayScrollLayer(aBuilder, aScrolledFrame, aScrolledFrame, aScrollFrame)
|
|
{
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_CTOR(nsDisplayScrollInfoLayer);
|
|
#endif
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayScrollInfoLayer::~nsDisplayScrollInfoLayer()
|
|
{
|
|
MOZ_COUNT_DTOR(nsDisplayScrollInfoLayer);
|
|
}
|
|
#endif
|
|
|
|
LayerState
|
|
nsDisplayScrollInfoLayer::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aParameters)
|
|
{
|
|
return LAYER_ACTIVE_EMPTY;
|
|
}
|
|
|
|
bool
|
|
nsDisplayScrollInfoLayer::TryMerge(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayScrollInfoLayer::ShouldFlattenAway(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
// Layer metadata for a particular scroll frame needs to be unique. Only
|
|
// one nsDisplayScrollLayer (with rendered content) or one
|
|
// nsDisplayScrollInfoLayer (with only the metadata) should survive the
|
|
// visibility computation.
|
|
return RemoveScrollLayerCount() == 1;
|
|
}
|
|
|
|
nsDisplayClip::nsDisplayClip(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayItem* aItem,
|
|
const nsRect& aRect)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aItem,
|
|
aFrame == aItem->GetUnderlyingFrame() ? aItem->ToReferenceFrame() : aBuilder->ToReferenceFrame(aFrame)),
|
|
mClip(aRect) {
|
|
MOZ_COUNT_CTOR(nsDisplayClip);
|
|
}
|
|
|
|
nsDisplayClip::nsDisplayClip(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
const nsRect& aRect)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList), mClip(aRect) {
|
|
MOZ_COUNT_CTOR(nsDisplayClip);
|
|
}
|
|
|
|
nsRect nsDisplayClip::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
|
|
nsRect r = nsDisplayWrapList::GetBounds(aBuilder, aSnap);
|
|
*aSnap = false;
|
|
return mClip.Intersect(r);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayClip::~nsDisplayClip() {
|
|
MOZ_COUNT_DTOR(nsDisplayClip);
|
|
}
|
|
#endif
|
|
|
|
void nsDisplayClip::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx) {
|
|
NS_ERROR("nsDisplayClip should have been flattened away for painting");
|
|
}
|
|
|
|
bool nsDisplayClip::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
nsRegion clipped;
|
|
clipped.And(*aVisibleRegion, mClip);
|
|
|
|
nsRegion finalClipped(clipped);
|
|
nsRect allowExpansion = mClip.Intersect(aAllowVisibleRegionExpansion);
|
|
bool anyVisible =
|
|
nsDisplayWrapList::ComputeVisibility(aBuilder, &finalClipped,
|
|
allowExpansion);
|
|
|
|
nsRegion removed;
|
|
removed.Sub(clipped, finalClipped);
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, removed);
|
|
|
|
return anyVisible;
|
|
}
|
|
|
|
bool nsDisplayClip::TryMerge(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem) {
|
|
if (aItem->GetType() != TYPE_CLIP)
|
|
return false;
|
|
nsDisplayClip* other = static_cast<nsDisplayClip*>(aItem);
|
|
if (!other->mClip.IsEqualInterior(mClip))
|
|
return false;
|
|
// No need to track merged frames for clipping
|
|
MergeFrom(other);
|
|
return true;
|
|
}
|
|
|
|
nsDisplayWrapList* nsDisplayClip::WrapWithClone(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem) {
|
|
return new (aBuilder)
|
|
nsDisplayClip(aBuilder, aItem->GetUnderlyingFrame(), aItem, mClip);
|
|
}
|
|
|
|
nsDisplayClipRoundedRect::nsDisplayClipRoundedRect(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsDisplayItem* aItem,
|
|
const nsRect& aRect, nscoord aRadii[8])
|
|
: nsDisplayClip(aBuilder, aFrame, aItem, aRect)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayClipRoundedRect);
|
|
memcpy(mRadii, aRadii, sizeof(mRadii));
|
|
}
|
|
|
|
nsDisplayClipRoundedRect::nsDisplayClipRoundedRect(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsDisplayList* aList,
|
|
const nsRect& aRect, nscoord aRadii[8])
|
|
: nsDisplayClip(aBuilder, aFrame, aList, aRect)
|
|
{
|
|
MOZ_COUNT_CTOR(nsDisplayClipRoundedRect);
|
|
memcpy(mRadii, aRadii, sizeof(mRadii));
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayClipRoundedRect::~nsDisplayClipRoundedRect()
|
|
{
|
|
MOZ_COUNT_DTOR(nsDisplayClipRoundedRect);
|
|
}
|
|
#endif
|
|
|
|
nsRegion
|
|
nsDisplayClipRoundedRect::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap)
|
|
{
|
|
*aSnap = false;
|
|
return nsRegion();
|
|
}
|
|
|
|
void
|
|
nsDisplayClipRoundedRect::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect, HitTestState* aState,
|
|
nsTArray<nsIFrame*> *aOutFrames)
|
|
{
|
|
if (!RoundedRectIntersectsRect(mClip, mRadii, aRect)) {
|
|
// aRect doesn't intersect our border-radius curve.
|
|
|
|
// FIXME: This isn't quite sufficient for aRect having nontrivial
|
|
// size (which is the unusual case here), since it's possible that
|
|
// the part of aRect that intersects the the rounded rect isn't the
|
|
// part that intersects the items in mList.
|
|
return;
|
|
}
|
|
|
|
mList.HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
}
|
|
|
|
nsDisplayWrapList*
|
|
nsDisplayClipRoundedRect::WrapWithClone(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem) {
|
|
return new (aBuilder)
|
|
nsDisplayClipRoundedRect(aBuilder, aItem->GetUnderlyingFrame(), aItem,
|
|
mClip, mRadii);
|
|
}
|
|
|
|
bool nsDisplayClipRoundedRect::ComputeVisibility(
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion)
|
|
{
|
|
nsRegion clipped;
|
|
clipped.And(*aVisibleRegion, mClip);
|
|
|
|
return nsDisplayWrapList::ComputeVisibility(aBuilder, &clipped, nsRect());
|
|
// FIXME: Remove a *conservative* opaque region from aVisibleRegion
|
|
// (like in nsDisplayClip::ComputeVisibility).
|
|
}
|
|
|
|
bool nsDisplayClipRoundedRect::TryMerge(nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem)
|
|
{
|
|
if (aItem->GetType() != TYPE_CLIP_ROUNDED_RECT)
|
|
return false;
|
|
nsDisplayClipRoundedRect* other =
|
|
static_cast<nsDisplayClipRoundedRect*>(aItem);
|
|
if (!mClip.IsEqualInterior(other->mClip) ||
|
|
memcmp(mRadii, other->mRadii, sizeof(mRadii)) != 0)
|
|
return false;
|
|
// No need to track merged frames for clipping
|
|
MergeFrom(other);
|
|
return true;
|
|
}
|
|
|
|
nsDisplayZoom::nsDisplayZoom(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
int32_t aAPD, int32_t aParentAPD)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList), 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 = nsDisplayWrapList::GetBounds(aBuilder, aSnap);
|
|
*aSnap = false;
|
|
return bounds.ConvertAppUnitsRoundOut(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().ConvertAppUnits(mParentAPD, mAPD));
|
|
rect.width = rect.height = 1;
|
|
} else {
|
|
rect = aRect.ConvertAppUnitsRoundOut(mParentAPD, mAPD);
|
|
}
|
|
mList.HitTest(aBuilder, rect, aState, aOutFrames);
|
|
}
|
|
|
|
void nsDisplayZoom::Paint(nsDisplayListBuilder* aBuilder,
|
|
nsRenderingContext* aCtx)
|
|
{
|
|
mList.PaintForFrame(aBuilder, aCtx, mFrame, nsDisplayList::PAINT_DEFAULT);
|
|
}
|
|
|
|
bool nsDisplayZoom::ComputeVisibility(nsDisplayListBuilder *aBuilder,
|
|
nsRegion *aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion)
|
|
{
|
|
// Convert the passed in visible region to our appunits.
|
|
nsRegion visibleRegion =
|
|
aVisibleRegion->ConvertAppUnitsRoundOut(mParentAPD, mAPD);
|
|
nsRegion originalVisibleRegion = visibleRegion;
|
|
|
|
nsRect transformedVisibleRect =
|
|
mVisibleRect.ConvertAppUnitsRoundOut(mParentAPD, mAPD);
|
|
nsRect allowExpansion =
|
|
aAllowVisibleRegionExpansion.ConvertAppUnitsRoundIn(mParentAPD, mAPD);
|
|
bool retval =
|
|
mList.ComputeVisibilityForSublist(aBuilder, &visibleRegion,
|
|
transformedVisibleRect,
|
|
allowExpansion);
|
|
|
|
nsRegion removed;
|
|
// removed = originalVisibleRegion - visibleRegion
|
|
removed.Sub(originalVisibleRegion, visibleRegion);
|
|
// Convert removed region to parent appunits.
|
|
removed = removed.ConvertAppUnitsRoundIn(mAPD, mParentAPD);
|
|
// aVisibleRegion = aVisibleRegion - removed (modulo any simplifications
|
|
// SubtractFromVisibleRegion does)
|
|
aBuilder->SubtractFromVisibleRegion(aVisibleRegion, removed);
|
|
|
|
return retval;
|
|
}
|
|
|
|
///////////////////////////////////////////////////
|
|
// nsDisplayTransform Implementation
|
|
//
|
|
|
|
// Write #define UNIFIED_CONTINUATIONS here 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
|
|
|
|
/* Returns the bounds of a frame as defined for transforms. If
|
|
* UNIFIED_CONTINUATIONS is not defined, this is simply the frame's bounding
|
|
* rectangle, translated to the origin. Otherwise, returns the smallest
|
|
* rectangle containing a frame and all of its continuations. For example, if
|
|
* there is a <span> element with several continuations split over several
|
|
* lines, this function will return the rectangle containing all of those
|
|
* continuations. This rectangle is relative to the origin of the frame's local
|
|
* coordinate space.
|
|
*/
|
|
#ifndef UNIFIED_CONTINUATIONS
|
|
|
|
nsRect
|
|
nsDisplayTransform::GetFrameBoundsForTransform(const nsIFrame* aFrame)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't get the bounds of a nonexistent frame!");
|
|
|
|
if (aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT) {
|
|
// TODO: SVG needs to define what percentage translations resolve against.
|
|
return nsRect();
|
|
}
|
|
|
|
return nsRect(nsPoint(0, 0), aFrame->GetSize());
|
|
}
|
|
|
|
#else
|
|
|
|
nsRect
|
|
nsDisplayTransform::GetFrameBoundsForTransform(const nsIFrame* aFrame)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't get the bounds of a nonexistent frame!");
|
|
|
|
nsRect result;
|
|
|
|
if (aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT) {
|
|
// TODO: SVG needs to define what percentage translations resolve against.
|
|
return result;
|
|
}
|
|
|
|
/* Iterate through the continuation list, unioning together all the
|
|
* bounding rects.
|
|
*/
|
|
for (const nsIFrame *currFrame = aFrame->GetFirstContinuation();
|
|
currFrame != nullptr;
|
|
currFrame = currFrame->GetNextContinuation())
|
|
{
|
|
/* Get the frame rect in local coordinates, then translate back to the
|
|
* original coordinates.
|
|
*/
|
|
result.UnionRect(result, nsRect(currFrame->GetOffsetTo(aFrame),
|
|
currFrame->GetSize()));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
#endif
|
|
|
|
/* Returns the delta specified by the -moz-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 */ gfxPoint3D
|
|
nsDisplayTransform::GetDeltaToMozTransformOrigin(const nsIFrame* aFrame,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't get delta for a null frame!");
|
|
NS_PRECONDITION(aFrame->IsTransformed(),
|
|
"Shouldn't get a delta for an untransformed frame!");
|
|
|
|
/* For both of the coordinates, if the value of -moz-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->GetStyleDisplay();
|
|
nsRect boundingRect = (aBoundsOverride ? *aBoundsOverride :
|
|
nsDisplayTransform::GetFrameBoundsForTransform(aFrame));
|
|
|
|
/* Allows us to access named variables by index. */
|
|
float coords[3];
|
|
const nscoord* dimensions[2] =
|
|
{&boundingRect.width, &boundingRect.height};
|
|
|
|
for (uint8_t index = 0; index < 2; ++index) {
|
|
/* If the -moz-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(*dimensions[index], aAppUnitsPerPixel) *
|
|
calc->mPercent +
|
|
NSAppUnitsToFloatPixels(calc->mLength, aAppUnitsPerPixel);
|
|
} else if (coord.GetUnit() == eStyleUnit_Percent) {
|
|
coords[index] =
|
|
NSAppUnitsToFloatPixels(*dimensions[index], aAppUnitsPerPixel) *
|
|
coord.GetPercentValue();
|
|
} else {
|
|
NS_ABORT_IF_FALSE(coord.GetUnit() == eStyleUnit_Coord, "unexpected unit");
|
|
coords[index] =
|
|
NSAppUnitsToFloatPixels(coord.GetCoordValue(), aAppUnitsPerPixel);
|
|
}
|
|
if ((aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT) &&
|
|
coord.GetUnit() != eStyleUnit_Percent) {
|
|
// <length> values represent offsets from the origin of the SVG element's
|
|
// user space, not the top left of its bounds, so we must adjust for that:
|
|
nscoord offset =
|
|
(index == 0) ? aFrame->GetPosition().x : aFrame->GetPosition().y;
|
|
coords[index] -= NSAppUnitsToFloatPixels(offset, aAppUnitsPerPixel);
|
|
}
|
|
}
|
|
|
|
coords[2] = NSAppUnitsToFloatPixels(display->mTransformOrigin[2].GetCoordValue(),
|
|
aAppUnitsPerPixel);
|
|
/* Adjust based on the origin of the rectangle. */
|
|
coords[0] += NSAppUnitsToFloatPixels(boundingRect.x, aAppUnitsPerPixel);
|
|
coords[1] += NSAppUnitsToFloatPixels(boundingRect.y, aAppUnitsPerPixel);
|
|
|
|
return gfxPoint3D(coords[0], coords[1], coords[2]);
|
|
}
|
|
|
|
/* 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 */ gfxPoint3D
|
|
nsDisplayTransform::GetDeltaToMozPerspectiveOrigin(const nsIFrame* aFrame,
|
|
float aAppUnitsPerPixel)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't get delta for a null frame!");
|
|
NS_PRECONDITION(aFrame->IsTransformed(),
|
|
"Shouldn't get a delta for an untransformed frame!");
|
|
NS_PRECONDITION(aFrame->GetParentStyleContextFrame(),
|
|
"Can't get delta without a style parent!");
|
|
|
|
/* 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* parent = aFrame->GetParentStyleContextFrame();
|
|
const nsStyleDisplay* display = parent->GetStyleDisplay();
|
|
nsRect boundingRect = nsDisplayTransform::GetFrameBoundsForTransform(parent);
|
|
|
|
/* Allows us to access named variables by index. */
|
|
gfxPoint3D result;
|
|
result.z = 0.0f;
|
|
gfxFloat* coords[2] = {&result.x, &result.y};
|
|
const nscoord* dimensions[2] =
|
|
{&boundingRect.width, &boundingRect.height};
|
|
|
|
for (uint8_t index = 0; index < 2; ++index) {
|
|
/* If the -moz-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(*dimensions[index], aAppUnitsPerPixel) *
|
|
calc->mPercent +
|
|
NSAppUnitsToFloatPixels(calc->mLength, aAppUnitsPerPixel);
|
|
} else if (coord.GetUnit() == eStyleUnit_Percent) {
|
|
*coords[index] =
|
|
NSAppUnitsToFloatPixels(*dimensions[index], aAppUnitsPerPixel) *
|
|
coord.GetPercentValue();
|
|
} else {
|
|
NS_ABORT_IF_FALSE(coord.GetUnit() == eStyleUnit_Coord, "unexpected unit");
|
|
*coords[index] =
|
|
NSAppUnitsToFloatPixels(coord.GetCoordValue(), aAppUnitsPerPixel);
|
|
}
|
|
}
|
|
|
|
nsPoint parentOffset = aFrame->GetOffsetTo(parent);
|
|
gfxPoint3D gfxOffset(
|
|
NSAppUnitsToFloatPixels(parentOffset.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(parentOffset.y, aAppUnitsPerPixel),
|
|
0.0f);
|
|
|
|
return result - gfxOffset;
|
|
}
|
|
|
|
/* Wraps up the -moz-transform matrix in a change-of-basis matrix pair that
|
|
* translates from local coordinate space to transform coordinate space, then
|
|
* hands it back.
|
|
*/
|
|
gfx3DMatrix
|
|
nsDisplayTransform::GetResultingTransformMatrix(const nsIFrame* aFrame,
|
|
const nsPoint& aOrigin,
|
|
float aAppUnitsPerPixel,
|
|
const nsRect* aBoundsOverride,
|
|
const nsCSSValueList* aTransformOverride,
|
|
gfxPoint3D* aToMozOrigin,
|
|
gfxPoint3D* aToPerspectiveOrigin,
|
|
nscoord* aChildPerspective,
|
|
nsIFrame** aOutAncestor)
|
|
{
|
|
NS_PRECONDITION(aFrame || (aToMozOrigin && aBoundsOverride && aToPerspectiveOrigin &&
|
|
aTransformOverride && aChildPerspective),
|
|
"Should have frame or necessary infromation to construct matrix");
|
|
|
|
NS_PRECONDITION(!(aFrame && (aToMozOrigin || aToPerspectiveOrigin ||
|
|
aTransformOverride || aChildPerspective)),
|
|
"Should not have both frame and necessary infromation to construct matrix");
|
|
|
|
if (aOutAncestor) {
|
|
*aOutAncestor = nsLayoutUtils::GetCrossDocParentFrame(aFrame);
|
|
}
|
|
|
|
/* Account for the -moz-transform-origin property by translating the
|
|
* coordinate space to the new origin.
|
|
*/
|
|
gfxPoint3D toMozOrigin =
|
|
aFrame ? GetDeltaToMozTransformOrigin(aFrame, aAppUnitsPerPixel, aBoundsOverride) : *aToMozOrigin;
|
|
gfxPoint3D newOrigin =
|
|
gfxPoint3D(NSAppUnitsToFloatPixels(aOrigin.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aOrigin.y, aAppUnitsPerPixel),
|
|
0.0f);
|
|
|
|
/* Get the underlying transform matrix. This requires us to get the
|
|
* bounds of the frame.
|
|
*/
|
|
const nsStyleDisplay* disp = aFrame ? aFrame->GetStyleDisplay() : nullptr;
|
|
nsRect bounds = (aBoundsOverride ? *aBoundsOverride :
|
|
nsDisplayTransform::GetFrameBoundsForTransform(aFrame));
|
|
|
|
/* Get the matrix, then change its basis to factor in the origin. */
|
|
bool dummy;
|
|
gfx3DMatrix result;
|
|
// Call IsSVGTransformed() regardless of the value of
|
|
// disp->mSpecifiedTransform, since we still need any transformFromSVGParent.
|
|
gfxMatrix svgTransform, transformFromSVGParent;
|
|
bool hasSVGTransforms =
|
|
aFrame && aFrame->IsSVGTransformed(&svgTransform, &transformFromSVGParent);
|
|
/* Transformed frames always have a transform, or are preserving 3d (and might still have perspective!) */
|
|
if (aTransformOverride) {
|
|
result = nsStyleTransformMatrix::ReadTransforms(aTransformOverride, nullptr, nullptr,
|
|
dummy, bounds, aAppUnitsPerPixel);
|
|
} else if (disp->mSpecifiedTransform) {
|
|
result = nsStyleTransformMatrix::ReadTransforms(disp->mSpecifiedTransform,
|
|
aFrame->GetStyleContext(),
|
|
aFrame->PresContext(),
|
|
dummy, bounds, aAppUnitsPerPixel);
|
|
} else if (hasSVGTransforms) {
|
|
// Correct the translation components for zoom:
|
|
float pixelsPerCSSPx = aFrame->PresContext()->AppUnitsPerCSSPixel() /
|
|
aAppUnitsPerPixel;
|
|
svgTransform.x0 *= pixelsPerCSSPx;
|
|
svgTransform.y0 *= pixelsPerCSSPx;
|
|
result = gfx3DMatrix::From2D(svgTransform);
|
|
}
|
|
|
|
if (hasSVGTransforms && !transformFromSVGParent.IsIdentity()) {
|
|
// Correct the translation components for zoom:
|
|
float pixelsPerCSSPx = aFrame->PresContext()->AppUnitsPerCSSPixel() /
|
|
aAppUnitsPerPixel;
|
|
transformFromSVGParent.x0 *= pixelsPerCSSPx;
|
|
transformFromSVGParent.y0 *= pixelsPerCSSPx;
|
|
result = result * gfx3DMatrix::From2D(transformFromSVGParent);
|
|
}
|
|
|
|
const nsStyleDisplay* parentDisp = nullptr;
|
|
nsStyleContext* parentStyleContext = aFrame ? aFrame->GetStyleContext()->GetParent(): nullptr;
|
|
if (parentStyleContext) {
|
|
parentDisp = parentStyleContext->GetStyleDisplay();
|
|
}
|
|
nscoord perspectiveCoord = 0;
|
|
if (parentDisp && parentDisp->mChildPerspective.GetUnit() == eStyleUnit_Coord) {
|
|
perspectiveCoord = parentDisp->mChildPerspective.GetCoordValue();
|
|
}
|
|
if (aChildPerspective) {
|
|
perspectiveCoord = *aChildPerspective;
|
|
}
|
|
|
|
if (nsLayoutUtils::Are3DTransformsEnabled() && perspectiveCoord > 0.0) {
|
|
gfx3DMatrix perspective;
|
|
perspective._34 =
|
|
-1.0 / NSAppUnitsToFloatPixels(parentDisp->mChildPerspective.GetCoordValue(),
|
|
aAppUnitsPerPixel);
|
|
/* At the point when perspective is applied, we have been translated to the transform origin.
|
|
* The translation to the perspective origin is the difference between these values.
|
|
*/
|
|
gfxPoint3D toPerspectiveOrigin = aFrame ? GetDeltaToMozPerspectiveOrigin(aFrame, aAppUnitsPerPixel) : *aToPerspectiveOrigin;
|
|
result = result * nsLayoutUtils::ChangeMatrixBasis(toPerspectiveOrigin - toMozOrigin, perspective);
|
|
}
|
|
|
|
if (aFrame && aFrame->Preserves3D() && nsLayoutUtils::Are3DTransformsEnabled()) {
|
|
// Include the transform set on our parent
|
|
NS_ASSERTION(aFrame->GetParent() &&
|
|
aFrame->GetParent()->IsTransformed() &&
|
|
aFrame->GetParent()->Preserves3DChildren(),
|
|
"Preserve3D mismatch!");
|
|
gfx3DMatrix parent =
|
|
GetResultingTransformMatrix(aFrame->GetParent(),
|
|
aOrigin - aFrame->GetPosition(),
|
|
aAppUnitsPerPixel, nullptr, nullptr, nullptr,
|
|
nullptr, nullptr, aOutAncestor);
|
|
return nsLayoutUtils::ChangeMatrixBasis(newOrigin + toMozOrigin, result) * parent;
|
|
}
|
|
|
|
return nsLayoutUtils::ChangeMatrixBasis
|
|
(newOrigin + toMozOrigin, result);
|
|
}
|
|
|
|
bool
|
|
nsDisplayOpacity::CanUseAsyncAnimations(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
if (GetUnderlyingFrame()->AreLayersMarkedActive(nsChangeHint_UpdateOpacityLayer)) {
|
|
return true;
|
|
}
|
|
|
|
if (nsLayoutUtils::IsAnimationLoggingEnabled()) {
|
|
nsCString message;
|
|
message.AppendLiteral("Performance warning: Async animation disabled because frame was not marked active for opacity animation");
|
|
CommonElementAnimationData::LogAsyncAnimationFailure(message,
|
|
GetUnderlyingFrame()->GetContent());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool
|
|
nsDisplayTransform::CanUseAsyncAnimations(nsDisplayListBuilder* aBuilder)
|
|
{
|
|
return ShouldPrerenderTransformedContent(aBuilder,
|
|
GetUnderlyingFrame(),
|
|
nsLayoutUtils::IsAnimationLoggingEnabled());
|
|
}
|
|
|
|
/* static */ bool
|
|
nsDisplayTransform::ShouldPrerenderTransformedContent(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
bool aLogAnimations)
|
|
{
|
|
if (!aFrame->AreLayersMarkedActive(nsChangeHint_UpdateTransformLayer)) {
|
|
if (aLogAnimations) {
|
|
nsCString message;
|
|
message.AppendLiteral("Performance warning: Async animation disabled because frame was not marked active for transform animation");
|
|
CommonElementAnimationData::LogAsyncAnimationFailure(message,
|
|
aFrame->GetContent());
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsSize refSize = aBuilder->ReferenceFrame()->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();
|
|
if (frameSize <= refSize) {
|
|
// Bug 717521 - pre-render max 4096 x 4096 device pixels.
|
|
nscoord max = aFrame->PresContext()->DevPixelsToAppUnits(4096);
|
|
nsRect visual = aFrame->GetVisualOverflowRect();
|
|
if (visual.width <= max && visual.height <= max) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (aLogAnimations) {
|
|
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(")");
|
|
CommonElementAnimationData::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 gfx3DMatrix& aMatrix)
|
|
{
|
|
if (aMatrix.IsSingular()) {
|
|
return false;
|
|
}
|
|
if (aFrame->GetStyleDisplay()->mBackfaceVisibility == NS_STYLE_BACKFACE_VISIBILITY_HIDDEN &&
|
|
aMatrix.IsBackfaceVisible()) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
const gfx3DMatrix&
|
|
nsDisplayTransform::GetTransform(float aAppUnitsPerPixel)
|
|
{
|
|
if (mTransform.IsIdentity() || mCachedAppUnitsPerPixel != aAppUnitsPerPixel) {
|
|
mTransform =
|
|
GetResultingTransformMatrix(mFrame, ToReferenceFrame(),
|
|
aAppUnitsPerPixel);
|
|
mCachedAppUnitsPerPixel = aAppUnitsPerPixel;
|
|
}
|
|
return mTransform;
|
|
}
|
|
|
|
already_AddRefed<Layer> nsDisplayTransform::BuildLayer(nsDisplayListBuilder *aBuilder,
|
|
LayerManager *aManager,
|
|
const ContainerParameters& aContainerParameters)
|
|
{
|
|
const gfx3DMatrix& newTransformMatrix =
|
|
GetTransform(mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
if (!IsFrameVisible(mFrame, newTransformMatrix)) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsRefPtr<ContainerLayer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, *mStoredList.GetList(),
|
|
aContainerParameters, &newTransformMatrix);
|
|
|
|
// Add the preserve-3d flag for this layer, BuildContainerLayerFor clears all flags,
|
|
// so we never need to explicitely unset this flag.
|
|
if (mFrame->Preserves3D() || mFrame->Preserves3DChildren()) {
|
|
container->SetContentFlags(container->GetContentFlags() | Layer::CONTENT_PRESERVE_3D);
|
|
}
|
|
|
|
AddAnimationsAndTransitionsToLayer(container, aBuilder,
|
|
this, eCSSProperty_transform);
|
|
return container.forget();
|
|
}
|
|
|
|
nsDisplayItem::LayerState
|
|
nsDisplayTransform::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aParameters) {
|
|
// Here we check if the *post-transform* bounds of this item are big enough
|
|
// to justify an active layer.
|
|
if (mFrame->AreLayersMarkedActive(nsChangeHint_UpdateTransformLayer) &&
|
|
!IsItemTooSmallForActiveLayer(this))
|
|
return LAYER_ACTIVE;
|
|
if (!GetTransform(mFrame->PresContext()->AppUnitsPerDevPixel()).Is2D() || mFrame->Preserves3D())
|
|
return LAYER_ACTIVE;
|
|
if (mFrame->GetContent()) {
|
|
if (nsLayoutUtils::HasAnimationsForCompositor(mFrame->GetContent(),
|
|
eCSSProperty_transform)) {
|
|
return LAYER_ACTIVE;
|
|
}
|
|
}
|
|
nsIFrame* activeScrolledRoot =
|
|
nsLayoutUtils::GetActiveScrolledRootFor(mFrame, nullptr);
|
|
return !mStoredList.ChildrenCanBeInactive(aBuilder,
|
|
aManager,
|
|
aParameters,
|
|
*mStoredList.GetList(),
|
|
activeScrolledRoot)
|
|
? LAYER_ACTIVE : LAYER_INACTIVE;
|
|
}
|
|
|
|
bool nsDisplayTransform::ComputeVisibility(nsDisplayListBuilder *aBuilder,
|
|
nsRegion *aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion)
|
|
{
|
|
/* 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;
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
if (ShouldPrerenderTransformedContent(aBuilder, mFrame) ||
|
|
!UntransformRectMatrix(mVisibleRect,
|
|
GetTransform(factor),
|
|
factor,
|
|
&untransformedVisibleRect))
|
|
{
|
|
untransformedVisibleRect = mFrame->GetVisualOverflowRectRelativeToSelf() +
|
|
aBuilder->ToReferenceFrame(mFrame);
|
|
}
|
|
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.
|
|
*/
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
gfx3DMatrix matrix = GetTransform(factor);
|
|
|
|
if (!IsFrameVisible(mFrame, matrix)) {
|
|
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. */
|
|
nsRect resultingRect;
|
|
if (aRect.width == 1 && aRect.height == 1) {
|
|
// Magic width/height indicating we're hit testing a point, not a rect
|
|
gfxPoint point = matrix.Inverse().ProjectPoint(
|
|
gfxPoint(NSAppUnitsToFloatPixels(aRect.x, factor),
|
|
NSAppUnitsToFloatPixels(aRect.y, factor)));
|
|
|
|
resultingRect = nsRect(NSFloatPixelsToAppUnits(float(point.x), factor),
|
|
NSFloatPixelsToAppUnits(float(point.y), factor),
|
|
1, 1);
|
|
|
|
} else {
|
|
gfxRect originalRect(NSAppUnitsToFloatPixels(aRect.x, factor),
|
|
NSAppUnitsToFloatPixels(aRect.y, factor),
|
|
NSAppUnitsToFloatPixels(aRect.width, factor),
|
|
NSAppUnitsToFloatPixels(aRect.height, factor));
|
|
|
|
gfxRect rect = matrix.Inverse().ProjectRectBounds(originalRect);;
|
|
|
|
resultingRect = nsRect(NSFloatPixelsToAppUnits(float(rect.X()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Y()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Width()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Height()), factor));
|
|
}
|
|
|
|
|
|
#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(const nsPoint& aPoint)
|
|
{
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
gfx3DMatrix matrix = GetTransform(factor);
|
|
|
|
NS_ASSERTION(IsFrameVisible(mFrame, matrix), "We can't have hit a frame that isn't visible!");
|
|
|
|
gfxPoint point =
|
|
matrix.Inverse().ProjectPoint(gfxPoint(NSAppUnitsToFloatPixels(aPoint.x, factor),
|
|
NSAppUnitsToFloatPixels(aPoint.y, factor)));
|
|
|
|
gfxPoint3D transformed = matrix.Transform3D(gfxPoint3D(point.x, point.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)
|
|
{
|
|
nsRect untransformedBounds =
|
|
ShouldPrerenderTransformedContent(aBuilder, mFrame) ?
|
|
mFrame->GetVisualOverflowRectRelativeToSelf() + ToReferenceFrame() :
|
|
mStoredList.GetBounds(aBuilder, aSnap);
|
|
*aSnap = false;
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
return nsLayoutUtils::MatrixTransformRect(untransformedBounds,
|
|
GetTransform(factor),
|
|
factor);
|
|
}
|
|
|
|
/* 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;
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
if (!UntransformRectMatrix(mVisibleRect, GetTransform(factor), factor, &untransformedVisible)) {
|
|
return nsRegion();
|
|
}
|
|
|
|
const gfx3DMatrix& matrix = GetTransform(nsPresContext::AppUnitsPerCSSPixel());
|
|
|
|
nsRegion result;
|
|
gfxMatrix matrix2d;
|
|
bool tmpSnap;
|
|
if (matrix.Is2D(&matrix2d) &&
|
|
matrix2d.PreservesAxisAlignedRectangles() &&
|
|
mStoredList.GetOpaqueRegion(aBuilder, &tmpSnap).Contains(untransformedVisible)) {
|
|
result = mVisibleRect;
|
|
}
|
|
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;
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
if (!UntransformRectMatrix(mVisibleRect, GetTransform(factor), factor, &untransformedVisible)) {
|
|
return false;
|
|
}
|
|
const gfx3DMatrix& matrix = GetTransform(nsPresContext::AppUnitsPerCSSPixel());
|
|
|
|
gfxMatrix 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->GetUnderlyingFrame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
|
|
/* Now, move everything over to this frame and signal that
|
|
* we merged things!
|
|
*/
|
|
mStoredList.MergeFrom(&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)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't take the transform based on a null frame!");
|
|
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
return nsLayoutUtils::MatrixTransformRect
|
|
(aUntransformedBounds,
|
|
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 = nsPresContext::AppUnitsPerCSSPixel();
|
|
return nsLayoutUtils::MatrixTransformRectOut
|
|
(aUntransformedBounds,
|
|
GetResultingTransformMatrix(aFrame, aOrigin, factor, aBoundsOverride),
|
|
factor);
|
|
}
|
|
|
|
bool nsDisplayTransform::UntransformRectMatrix(const nsRect &aUntransformedBounds,
|
|
const gfx3DMatrix& aMatrix,
|
|
float aAppUnitsPerPixel,
|
|
nsRect *aOutRect)
|
|
{
|
|
if (aMatrix.IsSingular())
|
|
return false;
|
|
|
|
gfxRect result(NSAppUnitsToFloatPixels(aUntransformedBounds.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aUntransformedBounds.y, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aUntransformedBounds.width, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aUntransformedBounds.height, aAppUnitsPerPixel));
|
|
|
|
/* We want to untransform the matrix, so invert the transformation first! */
|
|
result = aMatrix.Inverse().ProjectRectBounds(result);
|
|
|
|
*aOutRect = nsLayoutUtils::RoundGfxRectToAppRect(result, aAppUnitsPerPixel);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayTransform::UntransformRect(const nsRect &aUntransformedBounds,
|
|
const nsIFrame* aFrame,
|
|
const nsPoint &aOrigin,
|
|
nsRect* aOutRect)
|
|
{
|
|
NS_PRECONDITION(aFrame, "Can't take the transform based on a null frame!");
|
|
|
|
/* Grab the matrix. If the transform is degenerate, just hand back the
|
|
* empty rect.
|
|
*/
|
|
float factor = nsPresContext::AppUnitsPerCSSPixel();
|
|
gfx3DMatrix matrix = GetResultingTransformMatrix(aFrame, aOrigin, factor);
|
|
|
|
return UntransformRectMatrix(aUntransformedBounds, matrix, factor, aOutRect);
|
|
}
|
|
|
|
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
|
|
|
|
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, mFrame,
|
|
mVisibleRect,
|
|
aBuilder, aManager);
|
|
}
|
|
|
|
LayerState
|
|
nsDisplaySVGEffects::GetLayerState(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& aParameters)
|
|
{
|
|
return LAYER_SVG_EFFECTS;
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
nsDisplaySVGEffects::BuildLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
const ContainerParameters& 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()->IsSVG()) {
|
|
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->GetStyleDisplay()->mOpacity;
|
|
if (opacity == 0.0f)
|
|
return nullptr;
|
|
|
|
nsIFrame* firstFrame =
|
|
nsLayoutUtils::GetFirstContinuationOrSpecialSibling(mFrame);
|
|
nsSVGEffects::EffectProperties effectProperties =
|
|
nsSVGEffects::GetEffectProperties(firstFrame);
|
|
|
|
bool isOK = true;
|
|
effectProperties.GetClipPathFrame(&isOK);
|
|
effectProperties.GetMaskFrame(&isOK);
|
|
effectProperties.GetFilterFrame(&isOK);
|
|
|
|
if (!isOK) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsRefPtr<ContainerLayer> container = aManager->GetLayerBuilder()->
|
|
BuildContainerLayerFor(aBuilder, aManager, mFrame, this, mList,
|
|
aContainerParameters, nullptr);
|
|
|
|
return container.forget();
|
|
}
|
|
|
|
bool nsDisplaySVGEffects::ComputeVisibility(nsDisplayListBuilder* aBuilder,
|
|
nsRegion* aVisibleRegion,
|
|
const nsRect& aAllowVisibleRegionExpansion) {
|
|
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, nsRect());
|
|
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->GetUnderlyingFrame()->GetContent() != mFrame->GetContent())
|
|
return false;
|
|
nsDisplaySVGEffects* other = static_cast<nsDisplaySVGEffects*>(aItem);
|
|
MergeFromTrackingMergedFrames(other);
|
|
mEffectsBounds.UnionRect(mEffectsBounds,
|
|
other->mEffectsBounds + other->mFrame->GetOffsetTo(mFrame));
|
|
return true;
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
void
|
|
nsDisplaySVGEffects::PrintEffects(FILE* aOutput)
|
|
{
|
|
nsIFrame* firstFrame =
|
|
nsLayoutUtils::GetFirstContinuationOrSpecialSibling(mFrame);
|
|
nsSVGEffects::EffectProperties effectProperties =
|
|
nsSVGEffects::GetEffectProperties(firstFrame);
|
|
bool isOK = true;
|
|
nsSVGClipPathFrame *clipPathFrame = effectProperties.GetClipPathFrame(&isOK);
|
|
bool first = true;
|
|
fprintf(aOutput, " effects=(");
|
|
if (mFrame->GetStyleDisplay()->mOpacity != 1.0f) {
|
|
first = false;
|
|
fprintf(aOutput, "opacity(%f)", mFrame->GetStyleDisplay()->mOpacity);
|
|
}
|
|
if (clipPathFrame) {
|
|
if (!first) {
|
|
fprintf(aOutput, ", ");
|
|
}
|
|
fprintf(aOutput, "clip(%s)", clipPathFrame->IsTrivial() ? "trivial" : "non-trivial");
|
|
first = false;
|
|
}
|
|
if (effectProperties.GetFilterFrame(&isOK)) {
|
|
if (!first) {
|
|
fprintf(aOutput, ", ");
|
|
}
|
|
fprintf(aOutput, "filter");
|
|
first = false;
|
|
}
|
|
if (effectProperties.GetMaskFrame(&isOK)) {
|
|
if (!first) {
|
|
fprintf(aOutput, ", ");
|
|
}
|
|
fprintf(aOutput, "mask");
|
|
}
|
|
fprintf(aOutput, ")");
|
|
}
|
|
#endif
|
|
|