namespace cc {
class LayerImpl;
-// Scrollbar animation that partially fades and thins after an idle delay.
+// Scrollbar animation that partially fades and thins after an idle delay,
+// and reacts to mouse movements.
class CC_EXPORT ScrollbarAnimationControllerThinning
: public ScrollbarAnimationController {
public:
static scoped_ptr<ScrollbarAnimationControllerThinning> Create(
- LayerImpl* scroll_layer);
-
- static scoped_ptr<ScrollbarAnimationControllerThinning> CreateForTest(
LayerImpl* scroll_layer,
- base::TimeDelta animation_delay,
- base::TimeDelta animation_duration);
+ ScrollbarAnimationControllerClient* client,
+ base::TimeDelta delay_before_starting,
+ base::TimeDelta duration);
virtual ~ScrollbarAnimationControllerThinning();
bool mouse_is_over_scrollbar() const { return mouse_is_over_scrollbar_; }
bool mouse_is_near_scrollbar() const { return mouse_is_near_scrollbar_; }
- // ScrollbarAnimationController overrides.
- virtual bool IsAnimating() const OVERRIDE;
- virtual base::TimeDelta DelayBeforeStart(base::TimeTicks now) const OVERRIDE;
-
- virtual bool Animate(base::TimeTicks now) OVERRIDE;
- virtual void DidScrollGestureBegin() OVERRIDE;
- virtual void DidScrollGestureEnd(base::TimeTicks now) OVERRIDE;
- virtual void DidMouseMoveOffScrollbar(base::TimeTicks now) OVERRIDE;
- virtual bool DidScrollUpdate(base::TimeTicks now) OVERRIDE;
- virtual bool DidMouseMoveNear(base::TimeTicks now, float distance) OVERRIDE;
+ virtual void DidScrollUpdate() OVERRIDE;
+ virtual void DidMouseMoveOffScrollbar() OVERRIDE;
+ virtual void DidMouseMoveNear(float distance) OVERRIDE;
protected:
- ScrollbarAnimationControllerThinning(LayerImpl* scroll_layer,
- base::TimeDelta animation_delay,
- base::TimeDelta animation_duration);
+ ScrollbarAnimationControllerThinning(
+ LayerImpl* scroll_layer,
+ ScrollbarAnimationControllerClient* client,
+ base::TimeDelta delay_before_starting,
+ base::TimeDelta duration);
+
+ virtual void RunAnimationFrame(float progress) OVERRIDE;
private:
// Describes whether the current animation should INCREASE (darken / thicken)
INCREASE,
DECREASE
};
- // Returns how far through the animation we are as a progress value from
- // 0 to 1.
- float AnimationProgressAtTime(base::TimeTicks now);
float OpacityAtAnimationProgress(float progress);
float ThumbThicknessScaleAtAnimationProgress(float progress);
float AdjustScale(float new_value,
LayerImpl* scroll_layer_;
- base::TimeTicks last_awaken_time_;
bool mouse_is_over_scrollbar_;
bool mouse_is_near_scrollbar_;
// Are we narrowing or thickening the bars.
AnimationChange thickness_change_;
// Are we darkening or lightening the bars.
AnimationChange opacity_change_;
- // Should the animation be delayed or start immediately.
- bool should_delay_animation_;
- // If |should_delay_animation_| is true, delay the animation by this amount.
- base::TimeDelta animation_delay_;
- // The time for the animation to run.
- base::TimeDelta animation_duration_;
// How close should the mouse be to the scrollbar before we thicken it.
float mouse_move_distance_to_trigger_animation_;