Fixed that the top card casts a shadow on the second (4e456bee) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java

+15 −0

Original line number	Diff line number	Diff line
		@@ -587,6 +587,7 @@ public class StackScrollAlgorithm {
		algorithmState.itemsInTopStack += algorithmState.partialInTop;
		newSize = Math.max(mCollapsedSize, newSize);
		if (i == 0) {
		algorithmState.itemsInTopStack = 1.0f;
		childViewState.height = (int) newSize;
		}
		algorithmState.lastTopStackIndex = i;
		@@ -617,6 +618,20 @@ public class StackScrollAlgorithm {
		if (i < algorithmState.itemsInTopStack) {
		float stackIndex = algorithmState.itemsInTopStack - i;
		stackIndex = Math.min(stackIndex, MAX_ITEMS_IN_TOP_STACK + 2);
		if (i == 0 && algorithmState.itemsInTopStack < 2.0f) {

		// We only have the top item and an additional item in the top stack,
		// Interpolate the index from 0 to 2 while the second item is
		// translating in.
		stackIndex -= 1.0f;
		if (algorithmState.scrollY > mCollapsedSize) {

		// Since there is a shadow treshhold, we cant just interpolate from 0 to
		// 2 but we interpolate from 0.1f to 2.0f when scrolled in. The jump in
		// height will not be noticable since we have padding in between.
		stackIndex = 0.1f + stackIndex * 1.9f;
		}
		}
		childViewState.zTranslation = mZBasicHeight
		+ stackIndex * mZDistanceBetweenElements;
		} else if (i > (childCount - 1 - algorithmState.itemsInBottomStack)) {