Damage IsolatedZVolume when shadows change (ff641477) · Commits · e / os / android_frameworks_base

core/java/android/view/View.java

+34 −1

Original line number	Diff line number	Diff line
		@@ -11554,6 +11554,11 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		receiver.damageInParent();
		}
		}

		// Damage the entire IsolatedZVolume recieving this view's shadow.
		if (getCastsShadow() && getTranslationZ() != 0) {
		damageIsolatedZVolume();
		}
		}
		}

		@@ -11580,6 +11585,29 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		return mBackground != null;
		}

		/**
		* Damage area of the screen covered by the current isolated Z volume
		*
		* This method will guarantee that any changes to shadows cast by a View
		* are damaged on the screen for future redraw.
		*/
		private void damageIsolatedZVolume() {
		final AttachInfo ai = mAttachInfo;
		if (ai != null) {
		ViewParent p = getParent();
		while (p != null) {
		if (p instanceof ViewGroup) {
		final ViewGroup vg = (ViewGroup) p;
		if (vg.hasIsolatedZVolume()) {
		vg.damageInParent();
		return;
		}
		}
		p = p.getParent();
		}
		}
		}

		/**
		* Quick invalidation for View property changes (alpha, translationXY, etc.). We don't want to
		* set any flags or handle all of the cases handled by the default invalidation methods.
		@@ -11608,12 +11636,17 @@ public class View implements Drawable.Callback, KeyEvent.Callback,
		} else {
		damageInParent();
		}
		if (invalidateParent && getCastsShadow() && getTranslationZ() != 0) {
		damageIsolatedZVolume();
		}
		}

		/**
		* Tells the parent view to damage this view's bounds.
		*
		* @hide
		*/
		private void damageInParent() {
		protected void damageInParent() {
		final AttachInfo ai = mAttachInfo;
		final ViewParent p = mParent;
		if (p != null && ai != null) {