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Remove overscroll on running task when it's not attached to RecentsView

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This allows the running task to follow the finger freely until motion
pause is detected (or when trying to quick switch in a direciton that
has no tasks, as RecentsView is still attached until you swipe up).

Bug: 149934536
Change-Id: If68166e962af9f28c56017838f720e15ddb96560
This commit is contained in:
Tony Wickham
2020-08-05 13:32:37 -07:00
parent ffc06198ff
commit 3af714f052
2 changed files with 18 additions and 1 deletions
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10
quickstep/recents_ui_overrides/src/com/android/quickstep/BaseSwipeUpHandlerV2.java
View File

@@ -488,6 +488,16 @@ public abstract class BaseSwipeUpHandlerV2<T extends StatefulActivity<?>, Q exte
recentsAttachedToAppWindow = mIsShelfPeeking || mIsLikelyToStartNewTask;
}
mAnimationFactory.setRecentsAttachedToAppWindow(recentsAttachedToAppWindow, animate);
// Reapply window transform throughout the attach animation, as the animation affects how
// much the window is bound by overscroll (vs moving freely).
if (animate) {
ValueAnimator reapplyWindowTransformAnim = ValueAnimator.ofFloat(0, 1);
reapplyWindowTransformAnim.addUpdateListener(anim -> applyWindowTransform());
reapplyWindowTransformAnim.setDuration(RECENTS_ATTACH_DURATION).start();
} else {
applyWindowTransform();
}
}
@Override

9
quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
View File

@@ -2290,7 +2290,14 @@ public abstract class RecentsView<T extends StatefulActivity> extends PagedView
if (pageIndex == -1) {
return 0;
}
return getScrollForPage(pageIndex) - mOrientationHandler.getPrimaryScroll(this);
// Unbound the scroll (due to overscroll) if the adjacent tasks are offset away from it.
// This allows the page to move freely, given there's no visual indication why it shouldn't.
int boundedScroll = mOrientationHandler.getPrimaryScroll(this);
int unboundedScroll = getUnboundedScroll();
float unboundedProgress = mAdjacentPageOffset;
int scroll = Math.round(unboundedScroll * unboundedProgress
+ boundedScroll * (1 - unboundedProgress));
return getScrollForPage(pageIndex) - scroll;
}
public Consumer<MotionEvent> getEventDispatcher(float navbarRotation) {