| // Copyright (c) 2012 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 UI_COMPOSITOR_LAYER_ANIMATOR_H_ |
| #define UI_COMPOSITOR_LAYER_ANIMATOR_H_ |
| |
| #include <deque> |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/gtest_prod_util.h" |
| #include "base/macros.h" |
| #include "base/memory/linked_ptr.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/observer_list.h" |
| #include "base/time/time.h" |
| #include "cc/animation/animation_delegate.h" |
| #include "cc/animation/target_property.h" |
| #include "ui/compositor/compositor_export.h" |
| #include "ui/compositor/layer_animation_element.h" |
| #include "ui/compositor/layer_threaded_animation_delegate.h" |
| #include "ui/gfx/animation/tween.h" |
| |
| namespace cc { |
| class Animation; |
| class AnimationPlayer; |
| class AnimationTimeline; |
| class ElementAnimations; |
| class Layer; |
| } |
| |
| namespace gfx { |
| class Animation; |
| class Rect; |
| class Transform; |
| } |
| |
| namespace ui { |
| class Compositor; |
| class Layer; |
| class LayerAnimationSequence; |
| class LayerAnimationDelegate; |
| class LayerAnimationObserver; |
| class LayerAnimatorCollection; |
| class ScopedLayerAnimationSettings; |
| |
| // When a property of layer needs to be changed it is set by way of |
| // LayerAnimator. This enables LayerAnimator to animate property changes. |
| // NB: during many tests, set_disable_animations_for_test is used and causes |
| // all animations to complete immediately. The layer animation is ref counted |
| // so that if its owning layer is deleted (and the owning layer is only other |
| // class that should ever hold a ref ptr to a LayerAnimator), the animator can |
| // ensure that it is not disposed of until it finishes executing. It does this |
| // by holding a reference to itself for the duration of methods for which it |
| // must guarantee that |this| is valid. |
| class COMPOSITOR_EXPORT LayerAnimator |
| : public base::RefCounted<LayerAnimator>, |
| public LayerThreadedAnimationDelegate, |
| NON_EXPORTED_BASE(public cc::AnimationDelegate) { |
| public: |
| enum PreemptionStrategy { |
| IMMEDIATELY_SET_NEW_TARGET, |
| IMMEDIATELY_ANIMATE_TO_NEW_TARGET, |
| ENQUEUE_NEW_ANIMATION, |
| REPLACE_QUEUED_ANIMATIONS, |
| BLEND_WITH_CURRENT_ANIMATION |
| }; |
| |
| explicit LayerAnimator(base::TimeDelta transition_duration); |
| |
| // No implicit animations when properties are set. |
| static LayerAnimator* CreateDefaultAnimator(); |
| |
| // Implicitly animates when properties are set. |
| static LayerAnimator* CreateImplicitAnimator(); |
| |
| // Sets the transform on the delegate. May cause an implicit animation. |
| virtual void SetTransform(const gfx::Transform& transform); |
| gfx::Transform GetTargetTransform() const; |
| |
| // Sets the bounds on the delegate. May cause an implicit animation. |
| virtual void SetBounds(const gfx::Rect& bounds); |
| gfx::Rect GetTargetBounds() const; |
| |
| // Sets the opacity on the delegate. May cause an implicit animation. |
| virtual void SetOpacity(float opacity); |
| float GetTargetOpacity() const; |
| |
| // Sets the visibility of the delegate. May cause an implicit animation. |
| virtual void SetVisibility(bool visibility); |
| bool GetTargetVisibility() const; |
| |
| // Sets the brightness on the delegate. May cause an implicit animation. |
| virtual void SetBrightness(float brightness); |
| float GetTargetBrightness() const; |
| |
| // Sets the grayscale on the delegate. May cause an implicit animation. |
| virtual void SetGrayscale(float grayscale); |
| float GetTargetGrayscale() const; |
| |
| // Sets the color on the delegate. May cause an implicit animation. |
| virtual void SetColor(SkColor color); |
| SkColor GetTargetColor() const; |
| |
| // Returns the default length of animations, including adjustment for slow |
| // animation mode if set. |
| base::TimeDelta GetTransitionDuration() const; |
| |
| // Sets the layer animation delegate the animator is associated with. The |
| // animator does not own the delegate. The layer animator expects a non-NULL |
| // delegate for most of its operations, so do not call any methods without |
| // a valid delegate installed. |
| void SetDelegate(LayerAnimationDelegate* delegate); |
| |
| // Unsubscribe from |cc_layer_| and subscribe to |new_layer|. |
| void SwitchToLayer(scoped_refptr<cc::Layer> new_layer); |
| |
| // Attach AnimationPlayer to Layer and AnimationTimeline |
| void AttachLayerAndTimeline(Compositor* compositor); |
| // Detach AnimationPlayer from Layer and AnimationTimeline |
| void DetachLayerAndTimeline(Compositor* compositor); |
| |
| cc::AnimationPlayer* GetAnimationPlayerForTesting() const; |
| |
| // Sets the animation preemption strategy. This determines the behaviour if |
| // a property is set during an animation. The default is |
| // IMMEDIATELY_SET_NEW_TARGET (see ImmediatelySetNewTarget below). |
| void set_preemption_strategy(PreemptionStrategy strategy) { |
| preemption_strategy_ = strategy; |
| } |
| |
| PreemptionStrategy preemption_strategy() const { |
| return preemption_strategy_; |
| } |
| |
| // Start an animation sequence. If an animation for the same property is in |
| // progress, it needs to be interrupted with the new animation. The animator |
| // takes ownership of this animation sequence. |
| void StartAnimation(LayerAnimationSequence* animation); |
| |
| // Schedule an animation to be run when possible. The animator takes ownership |
| // of this animation sequence. |
| void ScheduleAnimation(LayerAnimationSequence* animation); |
| |
| // Starts the animations to be run together, ensuring that the first elements |
| // in these sequences have the same effective start time even when some of |
| // them start on the compositor thread (but there is no such guarantee for |
| // the effective start time of subsequent elements). Obviously will not work |
| // if they animate any common properties. The animator takes ownership of the |
| // animation sequences. Takes PreemptionStrategy into account. |
| void StartTogether(const std::vector<LayerAnimationSequence*>& animations); |
| |
| // Schedules the animations to be run together, ensuring that the first |
| // elements in these sequences have the same effective start time even when |
| // some of them start on the compositor thread (but there is no such guarantee |
| // for the effective start time of subsequent elements). Obviously will not |
| // work if they animate any common properties. The animator takes ownership |
| // of the animation sequences. |
| void ScheduleTogether(const std::vector<LayerAnimationSequence*>& animations); |
| |
| // Schedules a pause for length |duration| of all the specified properties. |
| // End the list with -1. |
| void SchedulePauseForProperties( |
| base::TimeDelta duration, |
| LayerAnimationElement::AnimatableProperties properties_to_pause); |
| |
| // Returns true if there is an animation in the queue (animations remain in |
| // the queue until they complete, so this includes running animations). |
| bool is_animating() const { return !animation_queue_.empty(); } |
| |
| // Returns true if there is an animation in the queue that animates the given |
| // property (animations remain in the queue until they complete, so this |
| // includes running animations). |
| bool IsAnimatingProperty( |
| LayerAnimationElement::AnimatableProperty property) const; |
| |
| // Stops animating the given property. No effect if there is no running |
| // animation for the given property. Skips to the final state of the |
| // animation. |
| void StopAnimatingProperty( |
| LayerAnimationElement::AnimatableProperty property); |
| |
| // Stops all animation and clears any queued animations. This call progresses |
| // animations to their end points and notifies all observers. |
| void StopAnimating() { StopAnimatingInternal(false); } |
| |
| // This is similar to StopAnimating, but aborts rather than finishes the |
| // animations and notifies all observers. |
| void AbortAllAnimations() { StopAnimatingInternal(true); } |
| |
| // These functions are used for adding or removing observers from the observer |
| // list. The observers are notified when animations end. |
| void AddObserver(LayerAnimationObserver* observer); |
| void RemoveObserver(LayerAnimationObserver* observer); |
| |
| // Called when a threaded animation is actually started. |
| void OnThreadedAnimationStarted(base::TimeTicks monotonic_time, |
| cc::TargetProperty::Type target_property, |
| int group_id); |
| |
| // This determines how implicit animations will be tweened. This has no |
| // effect on animations that are explicitly started or scheduled. The default |
| // is Tween::LINEAR. |
| void set_tween_type(gfx::Tween::Type tween_type) { tween_type_ = tween_type; } |
| gfx::Tween::Type tween_type() const { return tween_type_; } |
| |
| // For testing purposes only. |
| void set_disable_timer_for_test(bool disable_timer) { |
| disable_timer_for_test_ = disable_timer; |
| } |
| |
| void set_last_step_time(base::TimeTicks time) { |
| last_step_time_ = time; |
| } |
| base::TimeTicks last_step_time() const { return last_step_time_; } |
| |
| void Step(base::TimeTicks time_now); |
| |
| void AddToCollection(LayerAnimatorCollection* collection); |
| void RemoveFromCollection(LayerAnimatorCollection* collection); |
| |
| protected: |
| ~LayerAnimator() override; |
| |
| LayerAnimationDelegate* delegate() { return delegate_; } |
| const LayerAnimationDelegate* delegate() const { return delegate_; } |
| |
| // Virtual for testing. |
| virtual void ProgressAnimation(LayerAnimationSequence* sequence, |
| base::TimeTicks now); |
| |
| void ProgressAnimationToEnd(LayerAnimationSequence* sequence); |
| |
| // Returns true if the sequence is owned by this animator. |
| bool HasAnimation(LayerAnimationSequence* sequence) const; |
| |
| private: |
| friend class base::RefCounted<LayerAnimator>; |
| friend class ScopedLayerAnimationSettings; |
| friend class LayerAnimatorTestController; |
| FRIEND_TEST_ALL_PREFIXES(LayerAnimatorTest, AnimatorStartedCorrectly); |
| FRIEND_TEST_ALL_PREFIXES(LayerAnimatorTest, |
| AnimatorRemovedFromCollectionWhenLayerIsDestroyed); |
| |
| class RunningAnimation { |
| public: |
| RunningAnimation(const base::WeakPtr<LayerAnimationSequence>& sequence); |
| RunningAnimation(const RunningAnimation& other); |
| ~RunningAnimation(); |
| |
| bool is_sequence_alive() const { return !!sequence_.get(); } |
| LayerAnimationSequence* sequence() const { return sequence_.get(); } |
| |
| private: |
| base::WeakPtr<LayerAnimationSequence> sequence_; |
| |
| // Copy and assign are allowed. |
| }; |
| |
| typedef std::vector<RunningAnimation> RunningAnimations; |
| typedef std::deque<linked_ptr<LayerAnimationSequence> > AnimationQueue; |
| |
| // Finishes all animations by either advancing them to their final state or by |
| // aborting them. |
| void StopAnimatingInternal(bool abort); |
| |
| // Starts or stops stepping depending on whether thare are running animations. |
| void UpdateAnimationState(); |
| |
| // Removes the sequences from both the running animations and the queue. |
| // Returns a pointer to the removed animation, if any. NOTE: the caller is |
| // responsible for deleting the returned pointer. |
| LayerAnimationSequence* RemoveAnimation( |
| LayerAnimationSequence* sequence) WARN_UNUSED_RESULT; |
| |
| // Progresses to the end of the sequence before removing it. |
| void FinishAnimation(LayerAnimationSequence* sequence, bool abort); |
| |
| // Finishes any running animation with zero duration. |
| void FinishAnyAnimationWithZeroDuration(); |
| |
| // Clears the running animations and the queue. No sequences are progressed. |
| void ClearAnimations(); |
| |
| // Returns the running animation animating the given property, if any. |
| RunningAnimation* GetRunningAnimation( |
| LayerAnimationElement::AnimatableProperty property); |
| |
| // Checks if the sequence has already been added to the queue and adds it |
| // to the front if note. |
| void AddToQueueIfNotPresent(LayerAnimationSequence* sequence); |
| |
| // Any running or queued animation that affects a property in common with |
| // |sequence| is either finished or aborted depending on |abort|. |
| void RemoveAllAnimationsWithACommonProperty(LayerAnimationSequence* sequence, |
| bool abort); |
| |
| // Preempts a running animation by progressing both the running animation and |
| // the given sequence to the end. |
| void ImmediatelySetNewTarget(LayerAnimationSequence* sequence); |
| |
| // Preempts by aborting the running animation, and starts the given animation. |
| void ImmediatelyAnimateToNewTarget(LayerAnimationSequence* sequence); |
| |
| // Preempts by adding the new animation to the queue. |
| void EnqueueNewAnimation(LayerAnimationSequence* sequence); |
| |
| // Preempts by wiping out any unstarted animation in the queue and then |
| // enqueuing this animation. |
| void ReplaceQueuedAnimations(LayerAnimationSequence* sequence); |
| |
| // If there's an animation in the queue that doesn't animate the same property |
| // as a running animation, or an animation schedule to run before it, start it |
| // up. Repeat until there are no such animations. |
| void ProcessQueue(); |
| |
| // Attempts to add the sequence to the list of running animations. Returns |
| // false if there is an animation running that already animates one of the |
| // properties affected by |sequence|. |
| bool StartSequenceImmediately(LayerAnimationSequence* sequence); |
| |
| // Sets the value of target as if all the running and queued animations were |
| // allowed to finish. |
| void GetTargetValue(LayerAnimationElement::TargetValue* target) const; |
| |
| // Called whenever an animation is added to the animation queue. Either by |
| // starting the animation or adding to the queue. |
| void OnScheduled(LayerAnimationSequence* sequence); |
| |
| // Sets |transition_duration_| unless |is_transition_duration_locked_| is set. |
| void SetTransitionDuration(base::TimeDelta duration); |
| |
| // Clears the animation queues and notifies any running animations that they |
| // have been aborted. |
| void ClearAnimationsInternal(); |
| |
| // Cleans up any running animations that may have been deleted. |
| void PurgeDeletedAnimations(); |
| |
| LayerAnimatorCollection* GetLayerAnimatorCollection(); |
| |
| // cc::AnimationDelegate implementation. |
| void NotifyAnimationStarted(base::TimeTicks monotonic_time, |
| cc::TargetProperty::Type target_property, |
| int group_id) override; |
| void NotifyAnimationFinished(base::TimeTicks monotonic_time, |
| cc::TargetProperty::Type target_property, |
| int group_id) override {} |
| void NotifyAnimationAborted(base::TimeTicks monotonic_time, |
| cc::TargetProperty::Type target_property, |
| int group_id) override {} |
| void NotifyAnimationTakeover( |
| base::TimeTicks monotonic_time, |
| cc::TargetProperty::Type target_property, |
| double animation_start_time, |
| std::unique_ptr<cc::AnimationCurve> curve) override {} |
| |
| // Implementation of LayerThreadedAnimationDelegate. |
| void AddThreadedAnimation(std::unique_ptr<cc::Animation> animation) override; |
| void RemoveThreadedAnimation(int animation_id) override; |
| |
| void AttachLayerToAnimationPlayer(int layer_id); |
| void DetachLayerFromAnimationPlayer(); |
| |
| // This is the queue of animations to run. |
| AnimationQueue animation_queue_; |
| |
| // The target of all layer animations. |
| LayerAnimationDelegate* delegate_; |
| |
| // Plays CC animations. |
| scoped_refptr<cc::AnimationPlayer> animation_player_; |
| |
| // The currently running animations. |
| RunningAnimations running_animations_; |
| |
| // Determines how animations are replaced. |
| PreemptionStrategy preemption_strategy_; |
| |
| // Whether the length of animations is locked. While it is locked |
| // SetTransitionDuration does not set |transition_duration_|. |
| bool is_transition_duration_locked_; |
| |
| // The default length of animations. |
| base::TimeDelta transition_duration_; |
| |
| // The default tween type for implicit transitions |
| gfx::Tween::Type tween_type_; |
| |
| // Used for coordinating the starting of animations. |
| base::TimeTicks last_step_time_; |
| |
| // True if we are being stepped by our container. |
| bool is_started_; |
| |
| // This prevents the animator from automatically stepping through animations |
| // and allows for manual stepping. |
| bool disable_timer_for_test_; |
| |
| // Prevents timer adjustments in case when we start multiple animations |
| // with preemption strategies that discard previous animations. |
| bool adding_animations_; |
| |
| // Observers are notified when layer animations end, are scheduled or are |
| // aborted. |
| base::ObserverList<LayerAnimationObserver> observers_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LayerAnimator); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_COMPOSITOR_LAYER_ANIMATOR_H_ |