commit 06d582d4e42893e7e061477004d991d35b5f0d78
author Doris Liu <tianliu@google.com> Mon Jun 01 13:18:43 2015 -0700
committer Doris Liu <tianliu@google.com> Mon Jun 01 17:34:20 2015 -0700
tree 4497b34765e519afb96cfe8058eafe2a0a7a4d5d
parent 63428ccde7e925ceb94aa40e933b3d51954a7797

Fix calls to Rect.intersect(Rect) in package com.android.server.wm

This CL checks for the return value for Rect.intersect(Rect) for whether
there is actually an intersection before taking the calling rect as the
intersection. In addtion, this CL handles the cases where there is no
intersection (Rect.intersect(Rect) returns false).

bug: 7368679
Change-Id: I7d5ef7059ac432170470a108c0d6dece230ec0b3

services/core/java/com/android/server/wm/DisplayContent.java

diff --git a/services/core/java/com/android/server/wm/DisplayContent.java b/services/core/java/com/android/server/wm/DisplayContent.java
index f914369..5d6df26 100644
--- a/services/core/java/com/android/server/wm/DisplayContent.java
+++ b/services/core/java/com/android/server/wm/DisplayContent.java
@@ -238,6 +238,7 @@
             final TaskStack stack = win.getStack();
             if (win.isVisibleLw() && stack != null && stack != focusedStack) {
                 mTmpRect.set(win.mVisibleFrame);
+                // If no intersection, we need mTmpRect to be unmodified.
                 mTmpRect.intersect(win.mVisibleInsets);
                 mTouchExcludeRegion.op(mTmpRect, Region.Op.DIFFERENCE);
             }