| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef ProgrammaticScrollAnimator_h |
| #define ProgrammaticScrollAnimator_h |
| |
| #include "platform/geometry/FloatPoint.h" |
| #include "platform/heap/Handle.h" |
| #include "public/platform/WebCompositorAnimationDelegate.h" |
| #include "public/platform/WebCompositorAnimationPlayerClient.h" |
| #include "wtf/Allocator.h" |
| #include "wtf/Noncopyable.h" |
| #include "wtf/OwnPtr.h" |
| #include "wtf/PassOwnPtr.h" |
| |
| namespace blink { |
| |
| class ScrollableArea; |
| class WebCompositorAnimationPlayer; |
| class WebCompositorAnimationTimeline; |
| class WebScrollOffsetAnimationCurve; |
| |
| // Animator for fixed-destination scrolls, such as those triggered by |
| // CSSOM View scroll APIs. |
| class ProgrammaticScrollAnimator : private WebCompositorAnimationPlayerClient, WebCompositorAnimationDelegate { |
| WTF_MAKE_NONCOPYABLE(ProgrammaticScrollAnimator); |
| USING_FAST_MALLOC(ProgrammaticScrollAnimator); |
| public: |
| static PassOwnPtr<ProgrammaticScrollAnimator> create(ScrollableArea*); |
| |
| ~ProgrammaticScrollAnimator(); |
| |
| void scrollToOffsetWithoutAnimation(const FloatPoint&); |
| void animateToOffset(FloatPoint); |
| void cancelAnimation(); |
| void tickAnimation(double monotonicTime); |
| bool hasAnimationThatRequiresService() const; |
| void updateCompositorAnimations(); |
| void layerForCompositedScrollingDidChange(WebCompositorAnimationTimeline*); |
| void notifyCompositorAnimationFinished(int groupId); |
| // WebCompositorAnimationDelegate implementation. |
| void notifyAnimationStarted(double monotonicTime, int group) override; |
| void notifyAnimationFinished(double monotonicTime, int group) override; |
| |
| // WebCompositorAnimationPlayerClient implementation. |
| WebCompositorAnimationPlayer* compositorPlayer() const override; |
| |
| private: |
| explicit ProgrammaticScrollAnimator(ScrollableArea*); |
| |
| enum class RunState { |
| // No animation. |
| Idle, |
| |
| // Waiting to send an animation to the compositor. There might also |
| // already be another animation running on the compositor that will need |
| // to be canceled first. |
| WaitingToSendToCompositor, |
| |
| // Running an animation on the compositor. |
| RunningOnCompositor, |
| |
| // Running an animation on the main thread. |
| RunningOnMainThread, |
| |
| // Waiting to cancel the animation currently running on the compositor. |
| // There is no pending animation to replace the canceled animation. |
| WaitingToCancelOnCompositor |
| }; |
| |
| void resetAnimationState(); |
| void notifyPositionChanged(const DoublePoint&); |
| void reattachCompositorPlayerIfNeeded(WebCompositorAnimationTimeline*); |
| |
| OwnPtr<WebCompositorAnimationPlayer> m_compositorPlayer; |
| int m_compositorAnimationAttachedToLayerId; |
| |
| GC_PLUGIN_IGNORE("509911") |
| ScrollableArea* m_scrollableArea; |
| OwnPtr<WebScrollOffsetAnimationCurve> m_animationCurve; |
| FloatPoint m_targetOffset; |
| double m_startTime; |
| RunState m_runState; |
| int m_compositorAnimationId; |
| int m_compositorAnimationGroupId; |
| }; |
| |
| } // namespace blink |
| |
| #endif // ProgrammaticScrollAnimator_h |