#15046: implement placeCall / hangUp buttons
diff --git a/res/drawable/call_button.xml b/res/drawable/call_button.xml
new file mode 100644
index 0000000..206caf6
--- /dev/null
+++ b/res/drawable/call_button.xml
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_pressed="true"
+          android:state_enabled="true" >
+        <shape>
+            <gradient
+                android:startColor="#ccff00"
+                android:endColor="#99cc00"
+                android:angle="270" />
+            <stroke
+                android:width="3dp"
+                android:color="#99cc00" />
+            <corners
+                android:radius="3dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+
+    <item android:state_enabled="false" >
+        <shape>
+            <gradient
+                android:startColor="#cccccc"
+                android:endColor="#669900"
+                android:angle="270" />
+            <stroke
+                android:width="3dp"
+                android:color="#669900" />
+            <corners
+                android:radius="3dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+    
+    <item>        
+        <shape>
+            <gradient
+                android:startColor="#99cc00"
+                android:endColor="#669900"
+                android:angle="270" />
+            <stroke
+                android:width="3dp"
+                android:color="#669900" />
+            <corners
+                android:radius="3dp" />
+            <padding
+                android:left="10dp"
+                android:top="10dp"
+                android:right="10dp"
+                android:bottom="10dp" />
+        </shape>
+    </item>
+</selector>