New position indicators and icons for Launcher2.

Change-Id: Id444943a3cc2e9db78733614141cbe2be837fdbf

res/drawable/all_apps_button.xml

@@ -16,7 +16,7 @@
 
 <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="true" android:drawable="@drawable/all_apps_button_focused" />
     <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/drawable/home_arrows_left.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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.
+-->
+
+<level-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:maxLevel="0" android:drawable="@android:color/transparent" />
+    <item android:maxLevel="1" android:drawable="@drawable/home_arrows_left_1" />
+    <item android:maxLevel="2" android:drawable="@drawable/home_arrows_left_2" />
+    <item android:maxLevel="3" android:drawable="@drawable/home_arrows_left_3" />
+    <item android:maxLevel="4" android:drawable="@drawable/home_arrows_left_4" />
+</level-list>

res/drawable/home_arrows_left_1.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_1_press" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_1_focus" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_1_normal" />
+    <item android:drawable="@drawable/ic_home_arrows_1_normal" />
+</selector>

res/drawable/home_arrows_left_2.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_2_press" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_2_focus" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_2_normal" />
+    <item android:drawable="@drawable/ic_home_arrows_2_normal" />
+</selector>

res/drawable/home_arrows_left_3.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_3_press" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_3_focus" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_3_normal" />
+    <item android:drawable="@drawable/ic_home_arrows_3_normal" />
+</selector>

res/drawable/home_arrows_left_4.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_4_press" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_4_focus" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_4_normal" />
+    <item android:drawable="@drawable/ic_home_arrows_4_normal" />
+</selector>

res/drawable/home_arrows_right.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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.
+-->
+
+<level-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:maxLevel="0" android:drawable="@drawable/home_arrows_right_4" />
+    <item android:maxLevel="1" android:drawable="@drawable/home_arrows_right_3" />
+    <item android:maxLevel="2" android:drawable="@drawable/home_arrows_right_2" />
+    <item android:maxLevel="3" android:drawable="@drawable/home_arrows_right_1" />
+    <item android:maxLevel="4" android:drawable="@android:color/transparent" />
+</level-list>

res/drawable/home_arrows_right_1.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_1_press_right" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_1_focus_right" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_1_normal_right" />
+    <item android:drawable="@drawable/ic_home_arrows_1_normal_right" />
+</selector>

res/drawable/home_arrows_right_2.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_2_press_right" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_2_focus_right" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_2_normal_right" />
+    <item android:drawable="@drawable/ic_home_arrows_2_normal_right" />
+</selector>

res/drawable/home_arrows_right_3.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_3_press_right" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_3_focus_right" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_3_normal_right" />
+    <item android:drawable="@drawable/ic_home_arrows_3_normal_right" />
+</selector>

res/drawable/home_arrows_right_4.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2009 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/ic_home_arrows_4_press_right" />
+    <item android:state_focused="true" android:state_window_focused="true" android:drawable="@drawable/ic_home_arrows_4_focus_right" />
+    <item android:state_focused="true" android:state_window_focused="false" android:drawable="@drawable/ic_home_arrows_4_normal_right" />
+    <item android:drawable="@drawable/ic_home_arrows_4_normal_right" />
+</selector>

res/layout-port/launcher.xml

@@ -40,8 +40,6 @@
         android:id="@+id/workspace"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
-        android:scrollbars="horizontal"
-        android:fadeScrollbars="true"
         launcher:defaultScreen="2">
 
         <include android:id="@+id/cell1" layout="@layout/workspace_screen" />
@@ -52,9 +50,37 @@
                 
     </com.android.launcher2.Workspace>
 
+    <ImageView
+        android:id="@+id/previous_screen"
+        android:layout_width="53dip"
+        android:layout_height="@dimen/button_bar_height"
+        android:layout_gravity="bottom|left"
+        android:layout_marginLeft="6dip"
+
+        android:src="@drawable/home_arrows_left"
+        
+        android:onClick="previousScreen"
+
+        android:focusable="true"
+        android:clickable="true" />
+
+    <ImageView
+        android:id="@+id/next_screen"
+        android:layout_width="53dip"
+        android:layout_height="@dimen/button_bar_height"
+        android:layout_gravity="bottom|right"
+        android:layout_marginRight="6dip"
+
+        android:src="@drawable/home_arrows_right"
+        
+        android:onClick="nextScreen"
+        
+        android:focusable="true"
+        android:clickable="true" />
+
     <com.android.launcher2.HandleView
         android:id="@+id/all_apps_button"
-        android:layout_width="fill_parent"
+        android:layout_width="wrap_content"
         android:layout_height="@dimen/button_bar_height"
         android:layout_gravity="bottom|center_horizontal"
 
@@ -68,8 +94,8 @@
 
     <com.android.launcher2.DeleteZone
         android:id="@+id/delete_zone"
-        android:layout_width="fill_parent"
-        android:layout_height="49dip"
+        android:layout_width="wrap_content"
+        android:layout_height="@dimen/button_bar_height"
         android:layout_gravity="bottom|center_horizontal"
 
         android:scaleType="center"

src/com/android/launcher2/DragLayer.java

@@ -17,31 +17,15 @@
 package com.android.launcher2;
 
 import android.content.Context;
-import android.graphics.Bitmap;
-import android.graphics.Canvas;
-import android.graphics.Matrix;
-import android.graphics.Rect;
-import android.graphics.RectF;
-import android.graphics.Paint;
-import android.graphics.PorterDuffColorFilter;
-import android.graphics.PorterDuff;
-import android.os.Vibrator;
-import android.os.SystemClock;
 import android.util.AttributeSet;
-import android.util.Log;
 import android.view.MotionEvent;
-import android.view.View;
-import android.view.ViewGroup;
 import android.view.KeyEvent;
-import android.view.inputmethod.InputMethodManager;
 import android.widget.FrameLayout;
 
 /**
  * A ViewGroup that coordinated dragging across its dscendants
  */
 public class DragLayer extends FrameLayout {
-    private static final String TAG = "Launcher.DragLayer";
-
     DragController mDragController;
 
     /**

src/com/android/launcher2/Launcher.java

@@ -65,11 +65,11 @@ import android.view.inputmethod.InputMethodManager;
 import android.widget.EditText;
 import android.widget.TextView;
 import android.widget.Toast;
+import android.widget.ImageView;
 import android.appwidget.AppWidgetManager;
 import android.appwidget.AppWidgetProviderInfo;
 
 import java.util.ArrayList;
-import java.util.Map.Entry;
 import java.util.HashMap;
 import java.io.DataOutputStream;
 import java.io.FileNotFoundException;
@@ -550,10 +550,10 @@ public final class Launcher extends Activity
         mHandleView = (HandleView) findViewById(R.id.all_apps_button);
         mHandleView.setLauncher(this);
         mHandleView.setOnClickListener(this);
-        /* TODO
-        TransitionDrawable handleIcon = (TransitionDrawable) mHandleView.getDrawable();
-        handleIocon.setCrossFadeEnabled(true);
-        */
+        
+        Drawable previous = ((ImageView) dragLayer.findViewById(R.id.previous_screen)).getDrawable();
+        Drawable next = ((ImageView) dragLayer.findViewById(R.id.next_screen)).getDrawable();
+        mWorkspace.setIndicators(previous, next);
 
         workspace.setOnLongClickListener(this);
         workspace.setDragController(dragController);
@@ -572,6 +572,16 @@ public final class Launcher extends Activity
         dragController.addDropTarget(deleteZone);
     }
 
+    @SuppressWarnings({"UnusedDeclaration"})
+    public void previousScreen(View v) {
+        mWorkspace.scrollLeft();
+    }
+
+    @SuppressWarnings({"UnusedDeclaration"})
+    public void nextScreen(View v) {
+        mWorkspace.scrollRight();
+    }
+    
     /**
      * Creates a view representing a shortcut.
      *

src/com/android/launcher2/Workspace.java

@@ -108,6 +108,9 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
     int mDrawerContentHeight;
     int mDrawerContentWidth;
 
+    private Drawable mPreviousIndicator;
+    private Drawable mNextIndicator;
+
     /**
      * Used to inflate the Workspace from XML.
      *
@@ -462,6 +465,8 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
             postInvalidate();
         } else if (mNextScreen != INVALID_SCREEN) {
             mCurrentScreen = Math.max(0, Math.min(mNextScreen, getChildCount() - 1));
+            mPreviousIndicator.setLevel(mCurrentScreen);
+            mNextIndicator.setLevel(mCurrentScreen);
             Launcher.setScreen(mCurrentScreen);
             mNextScreen = INVALID_SCREEN;
             clearChildrenCache();
@@ -543,14 +548,6 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
         if (restore) {
             canvas.restoreToCount(restoreCount);
         }
-        
-        onDrawScrollBars(canvas);
-    }
-
-    @Override
-    protected int computeHorizontalScrollRange() {
-        final int count = getChildCount();
-        return count == 0 ? getWidth() : (getChildAt(count - 1)).getRight();
     }
 
     private float mScale = 1.0f;
@@ -794,7 +791,6 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
 
     void enableChildrenCache(int fromScreen, int toScreen) {
         if (fromScreen > toScreen) {
-            int temp = fromScreen;
             fromScreen = toScreen;
             toScreen = fromScreen;
         }
@@ -805,7 +801,6 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
         toScreen = Math.min(toScreen, count - 1);
         
         for (int i = fromScreen; i <= toScreen; i++) {
-            // Log.d("TAG", "enablingChildrenCache: " + i);
             final CellLayout layout = (CellLayout) getChildAt(i);
             layout.setChildrenDrawnWithCacheEnabled(true);
             layout.setChildrenDrawingCacheEnabled(true);
@@ -1392,6 +1387,13 @@ public class Workspace extends ViewGroup implements DropTarget, DragSource, Drag
         getChildAt(mDefaultScreen).requestFocus();
     }
 
+    void setIndicators(Drawable previous, Drawable next) {
+        mPreviousIndicator = previous;
+        mNextIndicator = next;
+        previous.setLevel(mCurrentScreen);
+        next.setLevel(mCurrentScreen);
+    }
+
     public static class SavedState extends BaseSavedState {
         int currentScreen = -1;