Introduced animations for the clipTopAmount of notifications.
Bug: 14081264
Change-Id: I09ca8161807d9dea7ca118601ddff9a28c373de5
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
index bd2541a..2b52c7e 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/stack/StackScrollAlgorithm.java
@@ -49,6 +49,7 @@
private int mBottomStackPeekSize;
private int mZDistanceBetweenElements;
private int mZBasicHeight;
+ private int mRoundedRectCornerRadius;
private StackIndentationFunctor mTopStackIndentationFunctor;
private StackIndentationFunctor mBottomStackIndentationFunctor;
@@ -111,6 +112,8 @@
mZBasicHeight = (MAX_ITEMS_IN_BOTTOM_STACK + 1) * mZDistanceBetweenElements;
mBottomStackSlowDownLength = context.getResources()
.getDimensionPixelSize(R.dimen.bottom_stack_slow_down_length);
+ mRoundedRectCornerRadius = context.getResources().getDimensionPixelSize(
+ com.android.internal.R.dimen.notification_quantum_rounded_rect_radius);
}
@@ -146,6 +149,67 @@
handleDraggedViews(ambientState, resultState, algorithmState);
updateDimmedActivated(ambientState, resultState, algorithmState);
+ updateClipping(resultState, algorithmState);
+ }
+
+ private void updateClipping(StackScrollState resultState,
+ StackScrollAlgorithmState algorithmState) {
+ float previousNotificationEnd = 0;
+ float previousNotificationStart = 0;
+ boolean previousNotificationIsSwiped = false;
+ int childCount = algorithmState.visibleChildren.size();
+ for (int i = 0; i < childCount; i++) {
+ ExpandableView child = algorithmState.visibleChildren.get(i);
+ StackScrollState.ViewState state = resultState.getViewStateForView(child);
+ float newYTranslation = state.yTranslation;
+ int newHeight = state.height;
+ // apply clipping and shadow
+ float newNotificationEnd = newYTranslation + newHeight;
+
+ // In the unlocked shade we have to clip a little bit higher because of the rounded
+ // corners of the notifications.
+ float clippingCorrection = state.dimmed ? 0 : mRoundedRectCornerRadius;
+
+ // When the previous notification is swiped, we don't clip the content to the
+ // bottom of it.
+ float clipHeight = previousNotificationIsSwiped
+ ? newHeight
+ : newNotificationEnd - (previousNotificationEnd - clippingCorrection);
+
+ updateChildClippingAndBackground(state, newHeight, clipHeight,
+ (int) (newHeight - (previousNotificationStart - newYTranslation)));
+
+ if (!child.isTransparent()) {
+ // Only update the previous values if we are not transparent,
+ // otherwise we would clip to a transparent view.
+ previousNotificationStart = newYTranslation + child.getClipTopAmount();
+ previousNotificationEnd = newNotificationEnd;
+ previousNotificationIsSwiped = child.getTranslationX() != 0;
+ }
+ }
+ }
+
+ /**
+ * Updates the shadow outline and the clipping for a view.
+ *
+ * @param state the viewState to update
+ * @param realHeight the currently applied height of the view
+ * @param clipHeight the desired clip height, the rest of the view will be clipped from the top
+ * @param backgroundHeight the desired background height. The shadows of the view will be
+ * based on this height and the content will be clipped from the top
+ */
+ private void updateChildClippingAndBackground(StackScrollState.ViewState state, int realHeight,
+ float clipHeight, int backgroundHeight) {
+ if (realHeight > clipHeight) {
+ state.topOverLap = (int) (realHeight - clipHeight);
+ } else {
+ state.topOverLap = 0;
+ }
+ if (realHeight > backgroundHeight) {
+ state.clipTopAmount = (realHeight - backgroundHeight);
+ } else {
+ state.clipTopAmount = 0;
+ }
}
/**