mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
0354744354
This moves restyling management out of nsCSSFrameConstructor (thus reducing its size), and keeps the restyling code closer together. This is the first of two big chunks of code moved in this patch series. A later patch in this series will move related code from nsFrameManager into the same destination file.
390 lines
12 KiB
C++
390 lines
12 KiB
C++
/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
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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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#include "gfxPlatform.h"
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#include "AnimationCommon.h"
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#include "nsRuleData.h"
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#include "nsCSSFrameConstructor.h"
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#include "nsCSSValue.h"
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#include "nsStyleContext.h"
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#include "nsIFrame.h"
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#include "nsLayoutUtils.h"
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#include "mozilla/LookAndFeel.h"
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#include "Layers.h"
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#include "FrameLayerBuilder.h"
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#include "nsDisplayList.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/Preferences.h"
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using namespace mozilla::layers;
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namespace mozilla {
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namespace css {
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/* static */ bool
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IsGeometricProperty(nsCSSProperty aProperty)
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{
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switch (aProperty) {
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case eCSSProperty_bottom:
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case eCSSProperty_height:
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case eCSSProperty_left:
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case eCSSProperty_right:
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case eCSSProperty_top:
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case eCSSProperty_width:
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return true;
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default:
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return false;
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}
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}
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CommonAnimationManager::CommonAnimationManager(nsPresContext *aPresContext)
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: mPresContext(aPresContext)
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{
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PR_INIT_CLIST(&mElementData);
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}
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CommonAnimationManager::~CommonAnimationManager()
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{
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NS_ABORT_IF_FALSE(!mPresContext, "Disconnect should have been called");
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}
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void
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CommonAnimationManager::Disconnect()
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{
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// Content nodes might outlive the transition or animation manager.
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RemoveAllElementData();
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mPresContext = nullptr;
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}
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void
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CommonAnimationManager::RemoveAllElementData()
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{
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while (!PR_CLIST_IS_EMPTY(&mElementData)) {
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CommonElementAnimationData *head =
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static_cast<CommonElementAnimationData*>(PR_LIST_HEAD(&mElementData));
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head->Destroy();
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}
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}
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/*
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* nsISupports implementation
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*/
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NS_IMPL_ISUPPORTS1(CommonAnimationManager, nsIStyleRuleProcessor)
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nsRestyleHint
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CommonAnimationManager::HasStateDependentStyle(StateRuleProcessorData* aData)
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{
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return nsRestyleHint(0);
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}
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bool
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CommonAnimationManager::HasDocumentStateDependentStyle(StateRuleProcessorData* aData)
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{
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return false;
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}
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nsRestyleHint
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CommonAnimationManager::HasAttributeDependentStyle(AttributeRuleProcessorData* aData)
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{
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return nsRestyleHint(0);
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}
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/* virtual */ bool
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CommonAnimationManager::MediumFeaturesChanged(nsPresContext* aPresContext)
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{
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return false;
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}
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/* virtual */ size_t
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CommonAnimationManager::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
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{
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// Measurement of the following members may be added later if DMD finds it is
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// worthwhile:
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// - mElementData
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//
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// The following members are not measured
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// - mPresContext, because it's non-owning
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return 0;
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}
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/* virtual */ size_t
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CommonAnimationManager::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
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{
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return aMallocSizeOf(this) + SizeOfExcludingThis(aMallocSizeOf);
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}
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/* static */ bool
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CommonAnimationManager::ExtractComputedValueForTransition(
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nsCSSProperty aProperty,
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nsStyleContext* aStyleContext,
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nsStyleAnimation::Value& aComputedValue)
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{
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bool result =
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nsStyleAnimation::ExtractComputedValue(aProperty, aStyleContext,
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aComputedValue);
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if (aProperty == eCSSProperty_visibility) {
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NS_ABORT_IF_FALSE(aComputedValue.GetUnit() ==
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nsStyleAnimation::eUnit_Enumerated,
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"unexpected unit");
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aComputedValue.SetIntValue(aComputedValue.GetIntValue(),
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nsStyleAnimation::eUnit_Visibility);
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}
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return result;
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}
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NS_IMPL_ISUPPORTS1(AnimValuesStyleRule, nsIStyleRule)
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/* virtual */ void
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AnimValuesStyleRule::MapRuleInfoInto(nsRuleData* aRuleData)
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{
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nsStyleContext *contextParent = aRuleData->mStyleContext->GetParent();
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if (contextParent && contextParent->HasPseudoElementData()) {
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// Don't apply transitions or animations to things inside of
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// pseudo-elements.
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// FIXME (Bug 522599): Add tests for this.
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return;
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}
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for (uint32_t i = 0, i_end = mPropertyValuePairs.Length(); i < i_end; ++i) {
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PropertyValuePair &cv = mPropertyValuePairs[i];
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if (aRuleData->mSIDs & nsCachedStyleData::GetBitForSID(
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nsCSSProps::kSIDTable[cv.mProperty]))
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{
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nsCSSValue *prop = aRuleData->ValueFor(cv.mProperty);
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if (prop->GetUnit() == eCSSUnit_Null) {
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#ifdef DEBUG
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bool ok =
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#endif
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nsStyleAnimation::UncomputeValue(cv.mProperty, cv.mValue, *prop);
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NS_ABORT_IF_FALSE(ok, "could not store computed value");
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}
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}
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}
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}
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#ifdef DEBUG
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/* virtual */ void
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AnimValuesStyleRule::List(FILE* out, int32_t aIndent) const
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{
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for (int32_t index = aIndent; --index >= 0; ) fputs(" ", out);
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fputs("[anim values] { ", out);
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for (uint32_t i = 0, i_end = mPropertyValuePairs.Length(); i < i_end; ++i) {
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const PropertyValuePair &pair = mPropertyValuePairs[i];
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nsAutoString value;
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nsStyleAnimation::UncomputeValue(pair.mProperty, pair.mValue, value);
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fprintf(out, "%s: %s; ", nsCSSProps::GetStringValue(pair.mProperty).get(),
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NS_ConvertUTF16toUTF8(value).get());
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}
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fputs("}\n", out);
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}
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#endif
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void
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ComputedTimingFunction::Init(const nsTimingFunction &aFunction)
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{
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mType = aFunction.mType;
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if (mType == nsTimingFunction::Function) {
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mTimingFunction.Init(aFunction.mFunc.mX1, aFunction.mFunc.mY1,
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aFunction.mFunc.mX2, aFunction.mFunc.mY2);
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} else {
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mSteps = aFunction.mSteps;
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}
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}
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static inline double
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StepEnd(uint32_t aSteps, double aPortion)
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{
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NS_ABORT_IF_FALSE(0.0 <= aPortion && aPortion <= 1.0, "out of range");
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uint32_t step = uint32_t(aPortion * aSteps); // floor
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return double(step) / double(aSteps);
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}
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double
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ComputedTimingFunction::GetValue(double aPortion) const
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{
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switch (mType) {
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case nsTimingFunction::Function:
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return mTimingFunction.GetSplineValue(aPortion);
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case nsTimingFunction::StepStart:
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// There are diagrams in the spec that seem to suggest this check
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// and the bounds point should not be symmetric with StepEnd, but
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// should actually step up at rather than immediately after the
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// fraction points. However, we rely on rounding negative values
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// up to zero, so we can't do that. And it's not clear the spec
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// really meant it.
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return 1.0 - StepEnd(mSteps, 1.0 - aPortion);
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default:
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NS_ABORT_IF_FALSE(false, "bad type");
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// fall through
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case nsTimingFunction::StepEnd:
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return StepEnd(mSteps, aPortion);
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}
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}
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bool
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CommonElementAnimationData::CanAnimatePropertyOnCompositor(const dom::Element *aElement,
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nsCSSProperty aProperty,
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CanAnimateFlags aFlags)
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{
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bool shouldLog = nsLayoutUtils::IsAnimationLoggingEnabled();
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if (shouldLog && !gfxPlatform::OffMainThreadCompositingEnabled()) {
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nsCString message;
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message.AppendLiteral("Performance warning: Compositor disabled");
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LogAsyncAnimationFailure(message);
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return false;
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}
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nsIFrame* frame = nsLayoutUtils::GetStyleFrame(aElement);
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if (IsGeometricProperty(aProperty)) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Performance warning: Async animation of geometric property '");
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message.Append(nsCSSProps::GetStringValue(aProperty));
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message.AppendLiteral("' is disabled");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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if (aProperty == eCSSProperty_transform) {
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if (frame->Preserves3D() &&
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frame->Preserves3DChildren()) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Gecko bug: Async animation of 'preserve-3d' transforms is not supported. See bug 779598");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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if (frame->IsSVGTransformed()) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Gecko bug: Async 'transform' animations of frames with SVG transforms is not supported. See bug 779599");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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if (aFlags & CanAnimate_HasGeometricProperty) {
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if (shouldLog) {
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nsCString message;
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message.AppendLiteral("Performance warning: Async animation of 'transform' not possible due to presence of geometric properties");
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LogAsyncAnimationFailure(message, aElement);
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}
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return false;
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}
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}
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bool enabled = nsLayoutUtils::AreAsyncAnimationsEnabled();
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if (!enabled && shouldLog) {
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nsCString message;
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message.AppendLiteral("Performance warning: Async animations are disabled");
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LogAsyncAnimationFailure(message);
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}
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bool propertyAllowed = (aProperty == eCSSProperty_transform) ||
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(aProperty == eCSSProperty_opacity) ||
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(aFlags & CanAnimate_AllowPartial);
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return enabled && propertyAllowed;
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}
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/* static */ void
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CommonElementAnimationData::LogAsyncAnimationFailure(nsCString& aMessage,
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const nsIContent* aContent)
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{
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if (aContent) {
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aMessage.AppendLiteral(" [");
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aMessage.Append(nsAtomCString(aContent->Tag()));
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nsIAtom* id = aContent->GetID();
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if (id) {
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aMessage.AppendLiteral(" with id '");
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aMessage.Append(nsAtomCString(aContent->GetID()));
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aMessage.AppendLiteral("'");
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}
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aMessage.AppendLiteral("]");
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}
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aMessage.AppendLiteral("\n");
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printf_stderr(aMessage.get());
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}
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bool
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CommonElementAnimationData::CanThrottleTransformChanges(TimeStamp aTime)
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{
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if (!nsLayoutUtils::AreAsyncAnimationsEnabled()) {
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return false;
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}
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// If we know that the animation cannot cause overflow,
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// we can just disable flushes for this animation.
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// If we don't show scrollbars, we don't care about overflow.
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if (LookAndFeel::GetInt(LookAndFeel::eIntID_ShowHideScrollbars) == 0) {
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return true;
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}
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// If this animation can cause overflow, we can throttle some of the ticks.
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if ((aTime - mStyleRuleRefreshTime) < TimeDuration::FromMilliseconds(200)) {
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return true;
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}
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// If the nearest scrollable ancestor has overflow:hidden,
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// we don't care about overflow.
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nsIScrollableFrame* scrollable = nsLayoutUtils::GetNearestScrollableFrame(
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nsLayoutUtils::GetStyleFrame(mElement));
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if (!scrollable) {
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return true;
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}
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nsPresContext::ScrollbarStyles ss = scrollable->GetScrollbarStyles();
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if (ss.mVertical == NS_STYLE_OVERFLOW_HIDDEN &&
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ss.mHorizontal == NS_STYLE_OVERFLOW_HIDDEN &&
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scrollable->GetLogicalScrollPosition() == nsPoint(0, 0)) {
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return true;
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}
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return false;
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}
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bool
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CommonElementAnimationData::CanThrottleAnimation(TimeStamp aTime)
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{
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nsIFrame* frame = nsLayoutUtils::GetStyleFrame(mElement);
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if (!frame) {
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return false;
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}
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bool hasTransform = HasAnimationOfProperty(eCSSProperty_transform);
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bool hasOpacity = HasAnimationOfProperty(eCSSProperty_opacity);
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if (hasOpacity) {
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Layer* layer = FrameLayerBuilder::GetDedicatedLayer(
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frame, nsDisplayItem::TYPE_OPACITY);
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if (!layer || mAnimationGeneration > layer->GetAnimationGeneration()) {
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return false;
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}
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}
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if (!hasTransform) {
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return true;
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}
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Layer* layer = FrameLayerBuilder::GetDedicatedLayer(
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frame, nsDisplayItem::TYPE_TRANSFORM);
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if (!layer || mAnimationGeneration > layer->GetAnimationGeneration()) {
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return false;
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}
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return CanThrottleTransformChanges(aTime);
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}
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void
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CommonElementAnimationData::UpdateAnimationGeneration(nsPresContext* aPresContext)
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{
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mAnimationGeneration =
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aPresContext->RestyleManager()->GetAnimationGeneration();
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}
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}
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}
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