Add pressed states for the all apps button and the home button.

We'll need another asset for the selected state, when we do that.
This also updates the all apps icon to be a grid.

res/drawable/all_apps_button.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2008 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.
+-->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="true" android:drawable="@drawable/all_apps_button_pressed" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/all_apps_button_pressed" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/all_apps_button_normal" />
+    <item android:drawable="@drawable/all_apps_button_normal" />
+</selector>
+

res/raw/rollo.c

@@ -301,7 +301,7 @@ void
 draw_home_button()
 {
     color(1.0f, 1.0f, 1.0f, 1.0f);
-    bindTexture(NAMED_PFTexLinear, 0, params->homeButtonId);
+    bindTexture(NAMED_PFTexLinear, 0, state->homeButtonId);
 
     float scale = 2.0f / SCREEN_WIDTH_PX;
 

res/raw/rollo2.c

@@ -246,7 +246,7 @@ void
 draw_home_button()
 {
     color(1.0f, 1.0f, 1.0f, 1.0f);
-    bindTexture(NAMED_PFTexLinear, 0, params->homeButtonId);
+    bindTexture(NAMED_PFTexLinear, 0, state->homeButtonId);
 
     float scale = 2.0f / SCREEN_WIDTH_PX;
 

res/raw/rollo3.c

@@ -233,7 +233,7 @@ void
 draw_home_button()
 {
     setColor(1.0f, 1.0f, 1.0f, 1.0f);
-    bindTexture(NAMED_PFTexLinear, 0, params->homeButtonId);
+    bindTexture(NAMED_PFTexLinear, 0, state->homeButtonId);
 
     float scale = 2.0f / SCREEN_WIDTH_PX;
 

res/raw/rollo4.c

@@ -301,7 +301,7 @@ void
 draw_home_button()
 {
     color(1.0f, 1.0f, 1.0f, 1.0f);
-    bindTexture(NAMED_PFTexLinear, 0, params->homeButtonId);
+    bindTexture(NAMED_PFTexLinear, 0, state->homeButtonId);
 
     float scale = 2.0f / SCREEN_WIDTH_PX;
 

src/com/android/launcher2/AllAppsView.java

@@ -225,6 +225,8 @@ public class AllAppsView extends RSSurfaceView
 
             if (y > mRollo.mTouchYBorders[mRollo.mTouchYBorders.length-1]) {
                 mTouchTracking = TRACKING_HOME;
+                mRollo.setHomeSelected(true);
+                mRollo.mState.save();
             } else {
                 mTouchTracking = TRACKING_FLING;
 
@@ -258,7 +260,8 @@ public class AllAppsView extends RSSurfaceView
         case MotionEvent.ACTION_MOVE:
         case MotionEvent.ACTION_OUTSIDE:
             if (mTouchTracking == TRACKING_HOME) {
-                // TODO: highlight?
+                mRollo.setHomeSelected(y > mRollo.mTouchYBorders[mRollo.mTouchYBorders.length-1]);
+                mRollo.mState.save();
             } else if (mTouchTracking == TRACKING_FLING) {
                 int rawX = (int)ev.getRawX();
                 int rawY = (int)ev.getRawY();
@@ -306,6 +309,8 @@ public class AllAppsView extends RSSurfaceView
                     if (y > mRollo.mTouchYBorders[mRollo.mTouchYBorders.length-1]) {
                         mLauncher.closeAllApps(true);
                     }
+                    mRollo.setHomeSelected(false);
+                    mRollo.mState.save();
                 }
             } else if (mTouchTracking == TRACKING_FLING) {
                 mRollo.mState.newTouchDown = 0;
@@ -533,7 +538,8 @@ public class AllAppsView extends RSSurfaceView
         private SimpleMesh mMesh;
         private SimpleMesh mMesh2;
 
-        private Allocation mHomeButton;
+        private Allocation mHomeButtonNormal;
+        private Allocation mHomeButtonPressed;
 
         private Allocation[] mIcons;
         private int[] mIconIds;
@@ -595,7 +601,6 @@ public class AllAppsView extends RSSurfaceView
             public int bubbleBitmapWidth;
             public int bubbleBitmapHeight;
 
-            public int homeButtonId;
             public int homeButtonWidth;
             public int homeButtonHeight;
             public int homeButtonTextureWidth;
@@ -610,6 +615,7 @@ public class AllAppsView extends RSSurfaceView
             public int selectedIconIndex = -1;
             public int selectedIconTexture;
             public float zoomTarget;
+            public int homeButtonId;
 
             State() {
                 mType = Type.createFromClass(mRS, State.class, 1, "StateClass");
@@ -814,15 +820,19 @@ public class AllAppsView extends RSSurfaceView
             mParams.bubbleBitmapWidth = bubble.getBitmapWidth();
             mParams.bubbleBitmapHeight = bubble.getBitmapHeight();
 
-            mHomeButton = Allocation.createFromBitmapResource(mRS, mRes,
-                    R.drawable.home_button, Element.RGBA_8888(mRS), false);
-            mHomeButton.uploadToTexture(0);
-            mParams.homeButtonId = mHomeButton.getID();
+            mHomeButtonNormal = Allocation.createFromBitmapResource(mRS, mRes,
+                    R.drawable.home_button_normal, Element.RGBA_8888(mRS), false);
+            mHomeButtonNormal.uploadToTexture(0);
+            mHomeButtonPressed = Allocation.createFromBitmapResource(mRS, mRes,
+                    R.drawable.home_button_pressed, Element.RGBA_8888(mRS), false);
+            mHomeButtonPressed.uploadToTexture(0);
             mParams.homeButtonWidth = 76;
             mParams.homeButtonHeight = 68;
             mParams.homeButtonTextureWidth = 128;
             mParams.homeButtonTextureHeight = 128;
 
+            mState.homeButtonId = mHomeButtonNormal.getID();
+
             mParams.save();
             mState.save();
 
@@ -1131,6 +1141,13 @@ public class AllAppsView extends RSSurfaceView
             mState.selectedIconIndex = -1;
         }
 
+        void setHomeSelected(boolean pressed) {
+            if (pressed) {
+                mState.homeButtonId = mHomeButtonPressed.getID();
+            } else {
+                mState.homeButtonId = mHomeButtonNormal.getID();
+            }
+        }
     }
 }