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https://gitlab.winehq.org/wine/wine-gecko.git
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c4e1059108
This patch causes animations whose corresponding animation-name is "none" to be dropped from the list of generated ElementAnimation objects. This means we avoid generating events for these animations.
564 lines
22 KiB
C++
564 lines
22 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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#ifndef mozilla_css_AnimationCommon_h
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#define mozilla_css_AnimationCommon_h
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#include "nsIStyleRuleProcessor.h"
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#include "nsIStyleRule.h"
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#include "nsRefreshDriver.h"
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#include "prclist.h"
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#include "nsCSSProperty.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/StyleAnimationValue.h"
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#include "mozilla/dom/Element.h"
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#include "nsSMILKeySpline.h"
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#include "nsStyleStruct.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/FloatingPoint.h"
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#include "nsCSSPseudoElements.h"
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class nsIFrame;
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class nsPresContext;
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class nsStyleChangeList;
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namespace mozilla {
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class StyleAnimationValue;
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struct ElementPropertyTransition;
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struct ElementAnimationCollection;
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namespace css {
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bool IsGeometricProperty(nsCSSProperty aProperty);
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class CommonAnimationManager : public nsIStyleRuleProcessor,
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public nsARefreshObserver {
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public:
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CommonAnimationManager(nsPresContext *aPresContext);
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIStyleRuleProcessor (parts)
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virtual nsRestyleHint HasStateDependentStyle(StateRuleProcessorData* aData) MOZ_OVERRIDE;
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virtual nsRestyleHint HasStateDependentStyle(PseudoElementStateRuleProcessorData* aData) MOZ_OVERRIDE;
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virtual bool HasDocumentStateDependentStyle(StateRuleProcessorData* aData) MOZ_OVERRIDE;
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virtual nsRestyleHint
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HasAttributeDependentStyle(AttributeRuleProcessorData* aData) MOZ_OVERRIDE;
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virtual bool MediumFeaturesChanged(nsPresContext* aPresContext) MOZ_OVERRIDE;
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virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf)
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const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;
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virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)
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const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;
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/**
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* Notify the manager that the pres context is going away.
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*/
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void Disconnect();
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enum FlushFlags {
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Can_Throttle,
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Cannot_Throttle
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};
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static bool ExtractComputedValueForTransition(
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nsCSSProperty aProperty,
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nsStyleContext* aStyleContext,
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mozilla::StyleAnimationValue& aComputedValue);
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protected:
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virtual ~CommonAnimationManager();
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// For ElementCollectionRemoved
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friend struct mozilla::ElementAnimationCollection;
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virtual void
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AddElementCollection(ElementAnimationCollection* aCollection) = 0;
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virtual void ElementCollectionRemoved() = 0;
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void RemoveAllElementCollections();
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// When this returns a value other than nullptr, it also,
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// as a side-effect, notifies the ActiveLayerTracker.
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static ElementAnimationCollection*
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GetAnimationsForCompositor(nsIContent* aContent,
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nsIAtom* aElementProperty,
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nsCSSProperty aProperty);
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// Update the style on aElement from the transition stored in this manager and
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// the new parent style - aParentStyle. aElement must be transitioning or
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// animated. Returns the updated style.
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nsStyleContext* UpdateThrottledStyle(mozilla::dom::Element* aElement,
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nsStyleContext* aParentStyle,
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nsStyleChangeList &aChangeList);
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// Reparent the style of aContent and any :before and :after pseudo-elements.
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already_AddRefed<nsStyleContext> ReparentContent(nsIContent* aContent,
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nsStyleContext* aParentStyle);
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// reparent :before and :after pseudo elements of aElement
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static void ReparentBeforeAndAfter(dom::Element* aElement,
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nsIFrame* aPrimaryFrame,
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nsStyleContext* aNewStyle,
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nsStyleSet* aStyleSet);
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PRCList mElementCollections;
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nsPresContext *mPresContext; // weak (non-null from ctor to Disconnect)
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};
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// The internals of UpdateAllThrottledStyles, used by nsAnimationManager and
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// nsTransitionManager, see the comments in the declaration of the latter.
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#define IMPL_UPDATE_ALL_THROTTLED_STYLES_INTERNAL(class_, animations_getter_) \
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void \
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class_::UpdateAllThrottledStylesInternal() \
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{ \
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TimeStamp now = mPresContext->RefreshDriver()->MostRecentRefresh(); \
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\
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nsStyleChangeList changeList; \
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\
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/* update each transitioning element by finding its root-most ancestor
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with a transition, and flushing the style on that ancestor and all
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its descendants*/ \
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PRCList *next = PR_LIST_HEAD(&mElementCollections); \
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while (next != &mElementCollections) { \
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ElementAnimationCollection* collection = \
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static_cast<ElementAnimationCollection*>(next); \
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next = PR_NEXT_LINK(next); \
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\
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if (collection->mFlushGeneration == now) { \
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/* this element has been ticked already */ \
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continue; \
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} \
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\
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/* element is initialised to the starting element (i.e., one we know has
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an animation) and ends up with the root-most animated ancestor,
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that is, the element where we begin updates. */ \
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dom::Element* element = collection->mElement; \
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/* make a list of ancestors */ \
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nsTArray<dom::Element*> ancestors; \
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do { \
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ancestors.AppendElement(element); \
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} while ((element = element->GetParentElement())); \
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\
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/* walk down the ancestors until we find one with a throttled transition */\
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for (int32_t i = ancestors.Length() - 1; i >= 0; --i) { \
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if (animations_getter_(ancestors[i], \
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nsCSSPseudoElements::ePseudo_NotPseudoElement, \
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false)) { \
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element = ancestors[i]; \
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break; \
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} \
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} \
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\
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nsIFrame* primaryFrame; \
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if (element && \
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(primaryFrame = nsLayoutUtils::GetStyleFrame(element))) { \
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UpdateThrottledStylesForSubtree(element, \
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primaryFrame->StyleContext()->GetParent(), changeList); \
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} \
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} \
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\
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RestyleManager* restyleManager = mPresContext->RestyleManager(); \
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restyleManager->ProcessRestyledFrames(changeList); \
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restyleManager->FlushOverflowChangedTracker(); \
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}
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/**
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* A style rule that maps property-StyleAnimationValue pairs.
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*/
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class AnimValuesStyleRule MOZ_FINAL : public nsIStyleRule
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{
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public:
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// nsISupports implementation
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NS_DECL_ISUPPORTS
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// nsIStyleRule implementation
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virtual void MapRuleInfoInto(nsRuleData* aRuleData) MOZ_OVERRIDE;
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#ifdef DEBUG
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virtual void List(FILE* out = stdout, int32_t aIndent = 0) const MOZ_OVERRIDE;
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#endif
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void AddValue(nsCSSProperty aProperty,
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mozilla::StyleAnimationValue &aStartValue)
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{
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PropertyValuePair v = { aProperty, aStartValue };
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mPropertyValuePairs.AppendElement(v);
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}
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// Caller must fill in returned value.
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mozilla::StyleAnimationValue* AddEmptyValue(nsCSSProperty aProperty)
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{
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PropertyValuePair *p = mPropertyValuePairs.AppendElement();
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p->mProperty = aProperty;
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return &p->mValue;
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}
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struct PropertyValuePair {
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nsCSSProperty mProperty;
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mozilla::StyleAnimationValue mValue;
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};
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private:
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~AnimValuesStyleRule() {}
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InfallibleTArray<PropertyValuePair> mPropertyValuePairs;
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};
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class ComputedTimingFunction {
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public:
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typedef nsTimingFunction::Type Type;
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void Init(const nsTimingFunction &aFunction);
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double GetValue(double aPortion) const;
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const nsSMILKeySpline* GetFunction() const {
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NS_ASSERTION(mType == nsTimingFunction::Function, "Type mismatch");
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return &mTimingFunction;
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}
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Type GetType() const { return mType; }
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uint32_t GetSteps() const { return mSteps; }
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private:
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Type mType;
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nsSMILKeySpline mTimingFunction;
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uint32_t mSteps;
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};
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} /* end css sub-namespace */
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struct AnimationPropertySegment
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{
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float mFromKey, mToKey;
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mozilla::StyleAnimationValue mFromValue, mToValue;
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mozilla::css::ComputedTimingFunction mTimingFunction;
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};
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struct AnimationProperty
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{
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nsCSSProperty mProperty;
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InfallibleTArray<AnimationPropertySegment> mSegments;
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};
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/**
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* Input timing parameters.
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*
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* Eventually this will represent all the input timing parameters specified
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* by content but for now it encapsulates just the subset of those
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* parameters passed to GetPositionInIteration.
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*/
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struct AnimationTiming
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{
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mozilla::TimeDuration mIterationDuration;
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mozilla::TimeDuration mDelay;
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float mIterationCount; // mozilla::PositiveInfinity<float>() means infinite
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uint8_t mDirection;
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uint8_t mFillMode;
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bool FillsForwards() const {
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return mFillMode == NS_STYLE_ANIMATION_FILL_MODE_BOTH ||
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mFillMode == NS_STYLE_ANIMATION_FILL_MODE_FORWARDS;
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}
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bool FillsBackwards() const {
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return mFillMode == NS_STYLE_ANIMATION_FILL_MODE_BOTH ||
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mFillMode == NS_STYLE_ANIMATION_FILL_MODE_BACKWARDS;
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}
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};
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/**
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* Stores the results of calculating the timing properties of an animation
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* at a given sample time.
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*
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* The members of a default-constructed object of this type are not meaningful.
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* Rather, this object is intended to be used as the return value of
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* ElementAnimation::GetComputedTimingAt which ensures all members are set
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* correctly.
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*/
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struct ComputedTiming
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{
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ComputedTiming()
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: mTimeFraction(kNullTimeFraction),
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mCurrentIteration(0)
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{ }
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static const double kNullTimeFraction;
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// The total duration of the animation including all iterations.
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// Will equal TimeDuration::Forever() if the animation repeats indefinitely.
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TimeDuration mActiveDuration;
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// Will be kNullTimeFraction if the animation is neither animating nor
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// filling at the sampled time.
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double mTimeFraction;
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// Zero-based iteration index (meaningless if mTimeFraction is
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// kNullTimeFraction).
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uint64_t mCurrentIteration;
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enum {
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// Sampled prior to the start of the active interval
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AnimationPhase_Before,
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// Sampled within the active interval
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AnimationPhase_Active,
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// Sampled after (or at) the end of the active interval
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AnimationPhase_After
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} mPhase;
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};
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/**
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* Data about one animation (i.e., one of the values of
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* 'animation-name') running on an element.
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*/
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struct ElementAnimation
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{
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protected:
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virtual ~ElementAnimation() { }
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public:
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ElementAnimation()
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: mIsRunningOnCompositor(false)
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, mLastNotification(LAST_NOTIFICATION_NONE)
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{
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}
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// FIXME: If we succeed in moving transition-specific code to a type of
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// AnimationEffect (as per the Web Animations API) we should remove these
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// virtual methods.
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virtual ElementPropertyTransition* AsTransition() { return nullptr; }
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virtual const ElementPropertyTransition* AsTransition() const {
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return nullptr;
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}
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bool IsPaused() const {
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return mPlayState == NS_STYLE_ANIMATION_PLAY_STATE_PAUSED;
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}
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// After transitions finish they need to be retained for one throttle-able
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// cycle (for reasons see explanation in nsTransitionManager.cpp). In the
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// meantime, however, they should be ignored.
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bool IsFinishedTransition() const {
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return mStartTime.IsNull();
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}
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void SetFinishedTransition() {
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MOZ_ASSERT(AsTransition(),
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"Calling SetFinishedTransition but it's not a transition");
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mStartTime = mozilla::TimeStamp();
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}
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bool HasAnimationOfProperty(nsCSSProperty aProperty) const;
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bool IsRunningAt(mozilla::TimeStamp aTime) const;
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bool IsCurrentAt(mozilla::TimeStamp aTime) const;
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// Return the duration at aTime (or, if paused, mPauseStart) since
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// the start of the delay period. May be negative.
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mozilla::TimeDuration GetLocalTimeAt(mozilla::TimeStamp aTime) const {
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MOZ_ASSERT(!IsPaused() || aTime >= mPauseStart,
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"if paused, aTime must be at least mPauseStart");
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MOZ_ASSERT(!IsFinishedTransition(),
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"GetLocalTimeAt should not be called on a finished transition");
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return (IsPaused() ? mPauseStart : aTime) - mStartTime;
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}
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// Return the duration from the start the active interval to the point where
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// the animation begins playback. This is zero unless the animation has
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// a negative delay in which case it is the absolute value of the delay.
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// This is used for setting the elapsedTime member of AnimationEvents.
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mozilla::TimeDuration InitialAdvance() const {
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return std::max(TimeDuration(), mTiming.mDelay * -1);
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}
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// This function takes as input the timing parameters of an animation and
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// returns the computed timing at the specified moment.
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//
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// This function returns ComputedTiming::kNullTimeFraction for the
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// mTimeFraction member of the return value if the animation should not be
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// run (because it is not currently active and is not filling at this time).
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static ComputedTiming GetComputedTimingAt(TimeDuration aLocalTime,
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const AnimationTiming& aTiming);
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// Return the duration of the active interval for the given timing parameters.
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static mozilla::TimeDuration ActiveDuration(const AnimationTiming& aTiming);
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nsString mName;
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AnimationTiming mTiming;
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// The beginning of the delay period. This is also set to a null
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// timestamp to mark transitions that have finished and are due to
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// be removed on the next throttle-able cycle.
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mozilla::TimeStamp mStartTime;
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mozilla::TimeStamp mPauseStart;
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uint8_t mPlayState;
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bool mIsRunningOnCompositor;
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enum {
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LAST_NOTIFICATION_NONE = uint64_t(-1),
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LAST_NOTIFICATION_END = uint64_t(-2)
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};
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// One of the above constants, or an integer for the iteration
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// whose start we last notified on.
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uint64_t mLastNotification;
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InfallibleTArray<AnimationProperty> mProperties;
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NS_INLINE_DECL_REFCOUNTING(ElementAnimation)
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};
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typedef InfallibleTArray<nsRefPtr<ElementAnimation> > ElementAnimationPtrArray;
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enum EnsureStyleRuleFlags {
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EnsureStyleRule_IsThrottled,
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EnsureStyleRule_IsNotThrottled
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};
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struct ElementAnimationCollection : public PRCList
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{
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ElementAnimationCollection(dom::Element *aElement, nsIAtom *aElementProperty,
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mozilla::css::CommonAnimationManager *aManager,
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TimeStamp aNow)
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: mElement(aElement)
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, mElementProperty(aElementProperty)
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, mManager(aManager)
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, mAnimationGeneration(0)
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, mFlushGeneration(aNow)
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, mNeedsRefreshes(true)
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#ifdef DEBUG
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, mCalledPropertyDtor(false)
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#endif
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{
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MOZ_COUNT_CTOR(ElementAnimationCollection);
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PR_INIT_CLIST(this);
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}
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~ElementAnimationCollection()
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{
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NS_ABORT_IF_FALSE(mCalledPropertyDtor,
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"must call destructor through element property dtor");
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MOZ_COUNT_DTOR(ElementAnimationCollection);
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PR_REMOVE_LINK(this);
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mManager->ElementCollectionRemoved();
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}
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void Destroy()
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{
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// This will call our destructor.
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mElement->DeleteProperty(mElementProperty);
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}
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static void PropertyDtor(void *aObject, nsIAtom *aPropertyName,
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void *aPropertyValue, void *aData);
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// This updates mNeedsRefreshes so the caller may need to check
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// for changes to values (for example, nsAnimationManager provides
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// CheckNeedsRefresh to register or unregister from observing the refresh
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// driver when this value changes).
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void EnsureStyleRuleFor(TimeStamp aRefreshTime, EnsureStyleRuleFlags aFlags);
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bool CanThrottleTransformChanges(mozilla::TimeStamp aTime);
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bool CanThrottleAnimation(mozilla::TimeStamp aTime);
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enum CanAnimateFlags {
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// Testing for width, height, top, right, bottom, or left.
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CanAnimate_HasGeometricProperty = 1,
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// Allow the case where OMTA is allowed in general, but not for the
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// specified property.
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CanAnimate_AllowPartial = 2
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};
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static bool
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CanAnimatePropertyOnCompositor(const dom::Element *aElement,
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nsCSSProperty aProperty,
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CanAnimateFlags aFlags);
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static bool IsCompositorAnimationDisabledForFrame(nsIFrame* aFrame);
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// True if this animation can be performed on the compositor thread.
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//
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// If aFlags contains CanAnimate_AllowPartial, returns whether the
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// state of this element's animations at the current refresh driver
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// time contains animation data that can be done on the compositor
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// thread. (This is useful for determining whether a layer should be
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// active, or whether to send data to the layer.)
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//
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// If aFlags does not contain CanAnimate_AllowPartial, returns whether
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// the state of this element's animations at the current refresh driver
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// time can be fully represented by data sent to the compositor.
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// (This is useful for determining whether throttle the animation
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// (suppress main-thread style updates).)
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bool CanPerformOnCompositorThread(CanAnimateFlags aFlags) const;
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bool HasAnimationOfProperty(nsCSSProperty aProperty) const;
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bool IsForElement() const { // rather than for a pseudo-element
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return mElementProperty == nsGkAtoms::animationsProperty ||
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mElementProperty == nsGkAtoms::transitionsProperty;
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}
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nsString PseudoElement()
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{
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if (IsForElement()) {
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return EmptyString();
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} else if (mElementProperty == nsGkAtoms::animationsOfBeforeProperty ||
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mElementProperty == nsGkAtoms::transitionsOfBeforeProperty) {
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return NS_LITERAL_STRING("::before");
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} else {
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return NS_LITERAL_STRING("::after");
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}
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}
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void PostRestyleForAnimation(nsPresContext *aPresContext) {
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nsRestyleHint styleHint = IsForElement() ? eRestyle_Self : eRestyle_Subtree;
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aPresContext->PresShell()->RestyleForAnimation(mElement, styleHint);
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}
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static void LogAsyncAnimationFailure(nsCString& aMessage,
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const nsIContent* aContent = nullptr);
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dom::Element *mElement;
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// the atom we use in mElement's prop table (must be a static atom,
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// i.e., in an atom list)
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nsIAtom *mElementProperty;
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mozilla::css::CommonAnimationManager *mManager;
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mozilla::ElementAnimationPtrArray mAnimations;
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// This style rule contains the style data for currently animating
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// values. It only matches when styling with animation. When we
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// style without animation, we need to not use it so that we can
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// detect any new changes; if necessary we restyle immediately
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// afterwards with animation.
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// NOTE: If we don't need to apply any styles, mStyleRule will be
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// null, but mStyleRuleRefreshTime will still be valid.
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nsRefPtr<mozilla::css::AnimValuesStyleRule> mStyleRule;
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// RestyleManager keeps track of the number of animation
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// 'mini-flushes' (see nsTransitionManager::UpdateAllThrottledStyles()).
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// mAnimationGeneration is the sequence number of the last flush where a
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// transition/animation changed. We keep a similar count on the
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// corresponding layer so we can check that the layer is up to date with
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// the animation manager.
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uint64_t mAnimationGeneration;
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// Update mAnimationGeneration to nsCSSFrameConstructor's count
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void UpdateAnimationGeneration(nsPresContext* aPresContext);
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// Returns true if there is an animation in the before or active phase at
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// the given time.
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bool HasCurrentAnimationsAt(mozilla::TimeStamp aTime);
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// The refresh time associated with mStyleRule.
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TimeStamp mStyleRuleRefreshTime;
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// Generation counter for flushes of throttled animations.
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// Used to prevent updating the styles twice for a given element during
|
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// UpdateAllThrottledStyles.
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TimeStamp mFlushGeneration;
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// False when we know that our current style rule is valid
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// indefinitely into the future (because all of our animations are
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// either completed or paused). May be invalidated by a style change.
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bool mNeedsRefreshes;
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#ifdef DEBUG
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bool mCalledPropertyDtor;
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#endif
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};
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}
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#endif /* !defined(mozilla_css_AnimationCommon_h) */
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