Tune window/icon alpha for swipe up to home animation. am: f462b251e1 (ddd80710) · Commits · e / os / android_packages_apps_Trebuchet

quickstep/recents_ui_overrides/src/com/android/quickstep/BaseSwipeUpHandler.java

+18 −5

Original line number	Diff line number	Diff line
		@@ -411,15 +411,27 @@ public abstract class BaseSwipeUpHandler<T extends BaseDraggingActivity, Q exten
		// FolderIconView can be seen morphing into the icon shape.
		final float windowAlphaThreshold = isFloatingIconView ? 1f - SHAPE_PROGRESS_DURATION : 1f;
		anim.addOnUpdateListener(new RectFSpringAnim.OnUpdateListener() {

		// Alpha interpolates between [1, 0] between progress values [start, end]
		final float start = 0f;
		final float end = 0.85f;

		private float getWindowAlpha(float progress) {
		if (progress <= start) {
		return 1f;
		}
		if (progress >= end) {
		return 0f;
		}
		return Utilities.mapToRange(progress, start, end, 1, 0, ACCEL_1_5);
		}

		@Override
		public void onUpdate(RectF currentRect, float progress) {
		homeAnim.setPlayFraction(progress);

		float alphaProgress = ACCEL_1_5.getInterpolation(progress);
		float windowAlpha = Utilities.boundToRange(Utilities.mapToRange(alphaProgress, 0,
		windowAlphaThreshold, 1.5f, 0f, Interpolators.LINEAR), 0, 1);
		mTransformParams.setProgress(progress)
		.setCurrentRectAndTargetAlpha(currentRect, windowAlpha);
		.setCurrentRectAndTargetAlpha(currentRect, getWindowAlpha(progress));
		if (isFloatingIconView) {
		mTransformParams.setCornerRadius(endRadius * progress + startRadius
		* (1f - progress));
		@@ -429,7 +441,8 @@ public abstract class BaseSwipeUpHandler<T extends BaseDraggingActivity, Q exten

		if (isFloatingIconView) {
		((FloatingIconView) floatingView).update(currentRect, 1f, progress,
		windowAlphaThreshold, mClipAnimationHelper.getCurrentCornerRadius(), false);
		windowAlphaThreshold, mClipAnimationHelper.getCurrentCornerRadius(),
		false);
		}
		}