Merge "Apply touch velocity to screenshot UI on dismissal ACTION_UP" into main (d901da1d) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/screenshot/ui/SwipeGestureListener.kt

+15 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,8 @@ class SwipeGestureListener(
		private val displayMetrics = view.resources.displayMetrics

		private var startX = 0f
		private var previousX = 0f
		private var previousTime = 0L

		fun onMotionEvent(ev: MotionEvent): Boolean {
		ev.offsetLocation(view.translationX, 0f)
		@@ -38,10 +40,20 @@ class SwipeGestureListener(
		MotionEvent.ACTION_DOWN -> {
		velocityTracker.addMovement(ev)
		startX = ev.rawX
		previousX = ev.rawX
		previousTime = ev.eventTime
		}
		MotionEvent.ACTION_UP -> {

		velocityTracker.computeCurrentVelocity(1)
		val xVelocity = velocityTracker.xVelocity

		val dt = ev.eventTime - previousTime
		// Apply the velocity for the time elapsed since the last translation (the animation
		// will not start immediately and doesn't know how much time has passed since the
		// last ACTION_MOVE).
		view.translationX = previousX + xVelocity * dt - startX

		if (
		abs(xVelocity) > FloatingWindowUtil.dpToPx(displayMetrics, FLING_THRESHOLD_DP)
		) {
		@@ -61,6 +73,9 @@ class SwipeGestureListener(
		MotionEvent.ACTION_MOVE -> {
		velocityTracker.addMovement(ev)
		view.translationX = ev.rawX - startX

		previousX = ev.rawX
		previousTime = ev.eventTime
		}
		}
		return false