Show stop button in a pressed state when pressed.

Fix for http://b/issue?id=2533372

Change-Id: I9a614a95f5537d17c9cb89e96afe6c21fc56d59a
diff --git a/res/drawable/stop_background.xml b/res/drawable/stop_background.xml
new file mode 100644
index 0000000..a9a4dd4
--- /dev/null
+++ b/res/drawable/stop_background.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- Custom background for the stop button which mimics btn_search_dialog
+        but draws in a pressed state even if it is in an unfocused window -->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_pressed="true"
+        android:drawable="@*android:drawable/btn_search_dialog_pressed" />
+    <item android:state_pressed="false"
+         android:drawable="@*android:drawable/btn_search_dialog_default" />
+</selector>
diff --git a/res/layout/title_bar.xml b/res/layout/title_bar.xml
index 3765024..c251250 100644
--- a/res/layout/title_bar.xml
+++ b/res/layout/title_bar.xml
@@ -73,7 +73,7 @@
                 />
         </LinearLayout>
         <ImageView android:id="@+id/stop"
-            android:background="@*android:drawable/btn_search_dialog"
+            android:background="@drawable/stop_background"
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
             android:src="@drawable/ic_btn_stop_v2"