Correctly report the transparent region am: f8da30dc65 am: 94a2f7e6fd (17890318) · Commits · e / os / android_frameworks_base

core/java/android/view/View.java

+8 −2

Original line number	Diff line number	Diff line
		@@ -20284,8 +20284,14 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		// remove it from the transparent region.
		final int[] location = attachInfo.mTransparentLocation;
		getLocationInWindow(location);
		region.op(location[0], location[1], location[0] + mRight - mLeft,
		location[1] + mBottom - mTop, Region.Op.DIFFERENCE);
		// When a view has Z value, then it will be better to leave some area below the view
		// for drawing shadow. The shadow outset is proportional to the Z value. Note that
		// the bottom part needs more offset than the left, top and right parts due to the
		// spot light effects.
		int shadowOffset = getZ() > 0 ? (int) getZ() : 0;
		region.op(location[0] - shadowOffset, location[1] - shadowOffset,
		location[0] + mRight - mLeft + shadowOffset,
		location[1] + mBottom - mTop + (shadowOffset * 3), Region.Op.DIFFERENCE);
		} else {
		if (mBackground != null && mBackground.getOpacity() != PixelFormat.TRANSPARENT) {
		// The SKIP_DRAW flag IS set and the background drawable exists, we remove

+19 −7

Original line number	Diff line number	Diff line
		@@ -6415,17 +6415,29 @@ public abstract class ViewGroup extends View implements ViewParent, ViewManager
		return true;
		}
		super.gatherTransparentRegion(region);
		final View[] children = mChildren;
		final int count = mChildrenCount;
		// Instead of naively traversing the view tree, we have to traverse according to the Z
		// order here. We need to go with the same order as dispatchDraw().
		// One example is that after surfaceView punch a hole, we will still allow other views drawn
		// on top of that hole. In this case, those other views should be able to cut the
		// transparent region into smaller area.
		final int childrenCount = mChildrenCount;
		boolean noneOfTheChildrenAreTransparent = true;
		for (int i = 0; i < count; i++) {
		final View child = children[i];
		if (childrenCount > 0) {
		final ArrayList<View> preorderedList = buildOrderedChildList();
		final boolean customOrder = preorderedList == null
		&& isChildrenDrawingOrderEnabled();
		final View[] children = mChildren;
		for (int i = 0; i < childrenCount; i++) {
		final int childIndex = getAndVerifyPreorderedIndex(childrenCount, i, customOrder);
		final View child = getAndVerifyPreorderedView(preorderedList, children, childIndex);
		if ((child.mViewFlags & VISIBILITY_MASK) == VISIBLE \|\| child.getAnimation() != null) {
		if (!child.gatherTransparentRegion(region)) {
		noneOfTheChildrenAreTransparent = false;
		}
		}
		}
		if (preorderedList != null) preorderedList.clear();
		}
		return meOpaque \|\| noneOfTheChildrenAreTransparent;
		}