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Add workspace scrim animation to the state transition to reduce jankiness.

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b/20956087

Note: Will work on creating a separate view for the scrim animation rather
than the drag layer on a separate CL.

Change-Id: Idaced5c6867abe3ed9afa984c885023676b3a141
This commit is contained in:
Hyunyoung Song
2015-06-19 18:03:35 -07:00
parent e91a14c698
commit 5796b03f6d
1 changed files with 9 additions and 17 deletions
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26
src/com/android/launcher3/WorkspaceStateTransitionAnimation.java
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@@ -192,8 +192,7 @@ public class WorkspaceStateTransitionAnimation {
@Thunk final ZoomInInterpolator mZoomInInterpolator = new ZoomInInterpolator();
// These properties refer to the background protection gradient used for AllApps and Customize
@Thunk ValueAnimator mBackgroundFadeInAnimation;
// These properties refer to the background protection gradient used for AllApps and Widget tray.
@Thunk ValueAnimator mBackgroundFadeOutAnimation;
@Thunk float mSpringLoadedShrinkFactor;
@@ -232,6 +231,7 @@ public class WorkspaceStateTransitionAnimation {
accessibilityEnabled);
animateSearchBar(states, animated, duration, hasOverlaySearchBar, layerViews,
accessibilityEnabled);
animateBackgroundGradient(states, animated, BACKGROUND_FADE_OUT_DURATION);
return mStateAnimator;
}
@@ -473,12 +473,6 @@ public class WorkspaceStateTransitionAnimation {
AccessibilityNodeInfo.ACTION_ACCESSIBILITY_FOCUS, null);
}
}
if (states.stateIsNormal) {
animateBackgroundGradient(0f, animated);
} else {
animateBackgroundGradient(mWorkspaceScrimAlpha, animated);
}
}
/**
@@ -548,19 +542,17 @@ public class WorkspaceStateTransitionAnimation {
}
/**
* Animates the background scrim.
* TODO(winsonc): Is there a better place for this?
* Animates the background scrim. Add to the state animator to prevent jankiness.
*
* @param finalAlpha the final alpha for the background scrim
* @param animated whether or not to set the background alpha immediately
* @duration duration of the animation
*/
private void animateBackgroundGradient(float finalAlpha, boolean animated) {
// Cancel any running background animations
cancelAnimator(mBackgroundFadeInAnimation);
cancelAnimator(mBackgroundFadeOutAnimation);
private void animateBackgroundGradient(TransitionStates states, boolean animated, int duration) {
final DragLayer dragLayer = mLauncher.getDragLayer();
final float startAlpha = dragLayer.getBackgroundAlpha();
float finalAlpha = states.stateIsNormal ? 0 : mWorkspaceScrimAlpha;
if (finalAlpha != startAlpha) {
if (animated) {
mBackgroundFadeOutAnimation =
@@ -573,8 +565,8 @@ public class WorkspaceStateTransitionAnimation {
}
});
mBackgroundFadeOutAnimation.setInterpolator(new DecelerateInterpolator(1.5f));
mBackgroundFadeOutAnimation.setDuration(BACKGROUND_FADE_OUT_DURATION);
mBackgroundFadeOutAnimation.start();
mBackgroundFadeOutAnimation.setDuration(duration);
mStateAnimator.play(mBackgroundFadeOutAnimation);
} else {
dragLayer.setBackgroundAlpha(finalAlpha);
}