gecko/layout/style/nsAnimationManager.h

182 lines
6.4 KiB
C++

/* vim: set shiftwidth=2 tabstop=8 autoindent cindent expandtab: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsAnimationManager_h_
#define nsAnimationManager_h_
#include "mozilla/Attributes.h"
#include "mozilla/ContentEvents.h"
#include "AnimationCommon.h"
#include "nsCSSPseudoElements.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/TimeStamp.h"
class nsCSSKeyframesRule;
class nsStyleContext;
namespace mozilla {
namespace css {
class Declaration;
}
}
struct AnimationEventInfo {
nsRefPtr<mozilla::dom::Element> mElement;
mozilla::InternalAnimationEvent mEvent;
AnimationEventInfo(mozilla::dom::Element *aElement,
const nsString& aAnimationName,
uint32_t aMessage, mozilla::TimeDuration aElapsedTime,
const nsAString& aPseudoElement)
: mElement(aElement), mEvent(true, aMessage)
{
// XXX Looks like nobody initialize WidgetEvent::time
mEvent.animationName = aAnimationName;
mEvent.elapsedTime = aElapsedTime.ToSeconds();
mEvent.pseudoElement = aPseudoElement;
}
// InternalAnimationEvent doesn't support copy-construction, so we need
// to ourselves in order to work with nsTArray
AnimationEventInfo(const AnimationEventInfo &aOther)
: mElement(aOther.mElement), mEvent(true, aOther.mEvent.message)
{
mEvent.AssignAnimationEventData(aOther.mEvent, false);
}
};
typedef InfallibleTArray<AnimationEventInfo> EventArray;
class nsAnimationManager MOZ_FINAL
: public mozilla::css::CommonAnimationManager
{
public:
nsAnimationManager(nsPresContext *aPresContext)
: mozilla::css::CommonAnimationManager(aPresContext)
, mObservingRefreshDriver(false)
{
}
static mozilla::ElementAnimationCollection*
GetAnimationsForCompositor(nsIContent* aContent, nsCSSProperty aProperty)
{
return mozilla::css::CommonAnimationManager::GetAnimationsForCompositor(
aContent, nsGkAtoms::animationsProperty, aProperty);
}
// Returns true if aContent or any of its ancestors has an animation.
static bool ContentOrAncestorHasAnimation(nsIContent* aContent) {
do {
if (aContent->GetProperty(nsGkAtoms::animationsProperty)) {
return true;
}
} while ((aContent = aContent->GetParent()));
return false;
}
void UpdateStyleAndEvents(mozilla::ElementAnimationCollection* aEA,
mozilla::TimeStamp aRefreshTime,
mozilla::EnsureStyleRuleFlags aFlags);
void GetEventsAt(mozilla::ElementAnimationCollection* aEA,
mozilla::TimeStamp aRefreshTime,
EventArray &aEventsToDispatch);
// nsIStyleRuleProcessor (parts)
virtual void RulesMatching(ElementRuleProcessorData* aData) MOZ_OVERRIDE;
virtual void RulesMatching(PseudoElementRuleProcessorData* aData) MOZ_OVERRIDE;
virtual void RulesMatching(AnonBoxRuleProcessorData* aData) MOZ_OVERRIDE;
#ifdef MOZ_XUL
virtual void RulesMatching(XULTreeRuleProcessorData* aData) MOZ_OVERRIDE;
#endif
virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf)
const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;
virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)
const MOZ_MUST_OVERRIDE MOZ_OVERRIDE;
// nsARefreshObserver
virtual void WillRefresh(mozilla::TimeStamp aTime) MOZ_OVERRIDE;
void FlushAnimations(FlushFlags aFlags);
/**
* Return the style rule that RulesMatching should add for
* aStyleContext. This might be different from what RulesMatching
* actually added during aStyleContext's construction because the
* element's animation-name may have changed. (However, this does
* return null during the non-animation restyling phase, as
* RulesMatching does.)
*
* aStyleContext may be a style context for aElement or for its
* :before or :after pseudo-element.
*/
nsIStyleRule* CheckAnimationRule(nsStyleContext* aStyleContext,
mozilla::dom::Element* aElement);
/**
* Dispatch any pending events. We accumulate animationend and
* animationiteration events only during refresh driver notifications
* (and dispatch them at the end of such notifications), but we
* accumulate animationstart events at other points when style
* contexts are created.
*/
void DispatchEvents() {
// Fast-path the common case: no events
if (!mPendingEvents.IsEmpty()) {
DoDispatchEvents();
}
}
mozilla::ElementAnimationCollection*
GetElementAnimations(mozilla::dom::Element *aElement,
nsCSSPseudoElements::Type aPseudoType,
bool aCreateIfNeeded);
// Updates styles on throttled animations. See note on nsTransitionManager
void UpdateAllThrottledStyles();
protected:
virtual void ElementCollectionRemoved() MOZ_OVERRIDE
{
CheckNeedsRefresh();
}
virtual void
AddElementCollection(mozilla::ElementAnimationCollection* aData) MOZ_OVERRIDE;
/**
* Check to see if we should stop or start observing the refresh driver
*/
void CheckNeedsRefresh();
private:
void BuildAnimations(nsStyleContext* aStyleContext,
mozilla::ElementAnimationPtrArray& aAnimations);
bool BuildSegment(InfallibleTArray<mozilla::AnimationPropertySegment>&
aSegments,
nsCSSProperty aProperty,
const mozilla::StyleAnimation& aAnimation,
float aFromKey, nsStyleContext* aFromContext,
mozilla::css::Declaration* aFromDeclaration,
float aToKey, nsStyleContext* aToContext);
nsIStyleRule* GetAnimationRule(mozilla::dom::Element* aElement,
nsCSSPseudoElements::Type aPseudoType);
// Update the animated styles of an element and its descendants.
// If the element has an animation, it is flushed back to its primary frame.
// If the element does not have an animation, then its style is reparented.
void UpdateThrottledStylesForSubtree(nsIContent* aContent,
nsStyleContext* aParentStyle,
nsStyleChangeList &aChangeList);
void UpdateAllThrottledStylesInternal();
// The guts of DispatchEvents
void DoDispatchEvents();
EventArray mPendingEvents;
bool mObservingRefreshDriver;
};
#endif /* !defined(nsAnimationManager_h_) */