Adding workaround to make voice button target area larger (Bug 5653332)

Change-Id: I8c4e940f9ae01ac4f6808ecfb10035249c12a499
diff --git a/res/layout-port/launcher.xml b/res/layout-port/launcher.xml
index 062656f..d7b3fee 100644
--- a/res/layout-port/launcher.xml
+++ b/res/layout-port/launcher.xml
@@ -70,6 +70,15 @@
         android:id="@+id/qsb_bar"
         layout="@layout/qsb_bar" />
 
+    <com.android.launcher2.DrawableStateProxyView
+        android:id="@+id/voice_button_proxy"
+        android:layout_width="@dimen/qsb_bar_height"
+        android:layout_height="@dimen/qsb_bar_height"
+        android:layout_gravity="right"
+        android:clickable="true"
+        android:onClick="onClickVoiceButton"
+        launcher:sourceViewId="@+id/voice_button" />
+
     <include layout="@layout/apps_customize_pane"
         android:id="@+id/apps_customize_pane"
         android:layout_width="match_parent"
diff --git a/res/values/attrs.xml b/res/values/attrs.xml
index 1258562..9ed824b 100644
--- a/res/values/attrs.xml
+++ b/res/values/attrs.xml
@@ -27,6 +27,13 @@
 
     <skip />
 
+    <!-- DrawableStateProxyView specific attributes. These attributes are used to customize
+         a DrawableStateProxyView view in XML files. -->
+    <declare-styleable name="DrawableStateProxyView">
+        <!-- The source view to delegate touch presses events to. -->
+        <attr name="sourceViewId" format="integer" />
+    </declare-styleable>
+
     <!-- Cling specific attributes. These attributes are used to customize
          the cling in XML files. -->
     <declare-styleable name="Cling">
diff --git a/src/com/android/launcher2/DrawableStateProxyView.java b/src/com/android/launcher2/DrawableStateProxyView.java
new file mode 100644
index 0000000..498730f
--- /dev/null
+++ b/src/com/android/launcher2/DrawableStateProxyView.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+package com.android.launcher2;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.StateListDrawable;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+
+import com.android.launcher.R;
+
+public class DrawableStateProxyView extends LinearLayout {
+
+    private View mView;
+    private int mViewId;
+
+    public DrawableStateProxyView(Context context) {
+        this(context, null);
+    }
+
+    public DrawableStateProxyView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public DrawableStateProxyView(Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+
+        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.DrawableStateProxyView,
+                defStyle, 0);
+        mViewId = a.getResourceId(R.styleable.DrawableStateProxyView_sourceViewId, -1);
+        a.recycle();
+
+        setFocusable(false);
+    }
+
+    @Override
+    protected void drawableStateChanged() {
+        super.drawableStateChanged();
+
+        if (mView == null) {
+            View parent = (View) getParent();
+            mView = parent.findViewById(mViewId);
+        }
+        mView.setPressed(isPressed());
+        mView.setHovered(isHovered());
+    }
+}