| // Copyright (c) 2016 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 CC_ANIMATION_SCROLL_OFFSET_ANIMATIONS_IMPL_H_ |
| #define CC_ANIMATION_SCROLL_OFFSET_ANIMATIONS_IMPL_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "cc/animation/animation_delegate.h" |
| #include "cc/animation/scroll_offset_animation_curve.h" |
| #include "cc/trees/mutator_host_client.h" |
| #include "ui/gfx/geometry/scroll_offset.h" |
| |
| namespace cc { |
| |
| class AnimationHost; |
| class AnimationTimeline; |
| class SingleKeyframeEffectAnimation; |
| |
| // Contains an AnimationTimeline and its Animation that owns the impl |
| // only scroll offset animations running on a particular CC Layer. |
| // We have just one animation for impl-only scroll offset animations. I.e. only |
| // one element can have an impl-only scroll offset animation at any given time. |
| // Note that this class only exists on the compositor thread. |
| class CC_ANIMATION_EXPORT ScrollOffsetAnimationsImpl |
| : public AnimationDelegate { |
| public: |
| explicit ScrollOffsetAnimationsImpl(AnimationHost* animation_host); |
| |
| ~ScrollOffsetAnimationsImpl() override; |
| |
| // |delayed_by| shrinks the duration of the |
| // animation. |animation_start_offset| causes us to start the animation |
| // partway through. |
| void ScrollAnimationCreate(ElementId element_id, |
| const gfx::ScrollOffset& target_offset, |
| const gfx::ScrollOffset& current_offset, |
| base::TimeDelta delayed_by, |
| base::TimeDelta animation_start_offset); |
| |
| bool ScrollAnimationUpdateTarget(ElementId element_id, |
| const gfx::Vector2dF& scroll_delta, |
| const gfx::ScrollOffset& max_scroll_offset, |
| base::TimeTicks frame_monotonic_time, |
| base::TimeDelta delayed_by); |
| |
| // Aborts the currently running scroll offset animation on an element and |
| // starts a new one offsetted by adjustment. |
| void ScrollAnimationApplyAdjustment(ElementId element_id, |
| const gfx::Vector2dF& adjustment); |
| |
| void ScrollAnimationAbort(bool needs_completion); |
| |
| // AnimationDelegate implementation. |
| void NotifyAnimationStarted(base::TimeTicks monotonic_time, |
| int target_property, |
| int group) override {} |
| void NotifyAnimationFinished(base::TimeTicks monotonic_time, |
| int target_property, |
| int group) override; |
| void NotifyAnimationAborted(base::TimeTicks monotonic_time, |
| int target_property, |
| int group) override {} |
| void NotifyAnimationTakeover(base::TimeTicks monotonic_time, |
| int target_property, |
| base::TimeTicks animation_start_time, |
| std::unique_ptr<AnimationCurve> curve) override { |
| } |
| |
| private: |
| void ReattachScrollOffsetAnimationIfNeeded(ElementId element_id); |
| |
| AnimationHost* animation_host_; |
| scoped_refptr<AnimationTimeline> scroll_offset_timeline_; |
| |
| // We have just one animation for impl-only scroll offset animations. |
| // I.e. only one element can have an impl-only scroll offset animation at |
| // any given time. |
| scoped_refptr<SingleKeyframeEffectAnimation> scroll_offset_animation_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ScrollOffsetAnimationsImpl); |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_ANIMATION_SCROLL_OFFSET_ANIMATIONS_IMPL_H_ |