A fullscreen wallpaper chooser for all screen sizes.

The wallpaper preview covers the whole screen,
with background protection for the gallery items and button.

Change-Id: Ice31c4fea6503d1a59b59d6fbffb5e4a28eb2143

9 files changed, 109 insertions, 129 deletions

diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index d9404a7bc..feba679f9 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -85,10 +85,9 @@
 
         <activity
             android:name="com.android.launcher2.WallpaperChooser"
-            style="@style/config_orientation"
+            style="@style/Theme.WallpaperPicker"
             android:label="@string/pick_wallpaper"
             android:icon="@drawable/ic_launcher_wallpaper"
-            android:theme="@style/Theme.WallpaperPicker"
             android:finishOnCloseSystemDialogs="true">
             <intent-filter>
                 <action android:name="android.intent.action.SET_WALLPAPER" />
diff --git a/res/drawable/wallpaper_gallery_background.xml b/res/drawable/wallpaper_gallery_background.xml
new file mode 100644
index 000000000..271c1dfb8
--- /dev/null
+++ b/res/drawable/wallpaper_gallery_background.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2011 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.
+-->
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <gradient android:startColor="#0000" android:endColor="#D0000000"
+            android:angle="270"/>
+</shape>
\ No newline at end of file
diff --git a/res/layout-large/wallpaper_chooser.xml b/res/layout-large/wallpaper_chooser.xml
deleted file mode 100644
index b48dbd9ad..000000000
--- a/res/layout-large/wallpaper_chooser.xml
+++ /dev/null
@@ -1,51 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-/*
-**
-** Copyright 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.
-*/
--->
-
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/wallpaper_list"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:paddingLeft="24dp"
-    android:paddingRight="24dp"
-    android:paddingTop="24dp"
-    android:paddingBottom="24dp"
-    android:gravity="center">
-    <GridView
-        android:id="@+id/gallery"
-        android:layout_width="636dp"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
-        android:numColumns="3"
-        android:stretchMode="none"
-        android:columnWidth="@dimen/live_wallpaper_column_width"
-        android:verticalSpacing="0dp"
-        android:horizontalSpacing="0dp"
-        android:drawSelectorOnTop="false" />
-    <TextView
-        android:id="@android:id/empty"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-
-        android:gravity="center"
-        android:visibility="gone"
-
-        android:text="@string/wallpaper_chooser_empty"
-        android:textAppearance="?android:attr/textAppearanceMedium" />
-</FrameLayout>
\ No newline at end of file
diff --git a/res/layout-large/wallpaper_chooser_base.xml b/res/layout-large/wallpaper_chooser_base.xml
deleted file mode 100644
index ba5ac5304..000000000
--- a/res/layout-large/wallpaper_chooser_base.xml
+++ /dev/null
@@ -1,23 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-/*
-**
-** Copyright 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.
-*/
--->
-
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content" />
diff --git a/res/layout/wallpaper_chooser.xml b/res/layout/wallpaper_chooser.xml
index 92a6596ee..c0a5fdf9e 100644
--- a/res/layout/wallpaper_chooser.xml
+++ b/res/layout/wallpaper_chooser.xml
@@ -18,26 +18,26 @@
 */
 -->
 
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:orientation="vertical"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <ImageView android:id="@+id/wallpaper"
-        android:layout_width="match_parent"
-        android:layout_height="0dip"
-        android:layout_weight="1.0"
-        android:scaleType="fitCenter" />
+    <LinearLayout
+            android:orientation="vertical"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_alignParentBottom="true"
+            android:background="@drawable/wallpaper_gallery_background">
 
-    <Gallery android:id="@+id/gallery"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
-        
-    <Button android:id="@+id/set"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="@string/wallpaper_instructions"
-        android:layout_gravity="center_horizontal" />
-
-</LinearLayout>
+        <Gallery android:id="@+id/gallery"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+            
+        <Button android:id="@+id/set"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/wallpaper_instructions"
+            android:layout_gravity="center_horizontal" />
+    </LinearLayout>
+</RelativeLayout>
 
diff --git a/res/values-large/styles.xml b/res/values-large/styles.xml
index 7e19e89fa..f44bfa58a 100644
--- a/res/values-large/styles.xml
+++ b/res/values-large/styles.xml
@@ -18,9 +18,6 @@
 -->
 
 <resources>
-    <style name="Theme.WallpaperPicker" parent="@*android:Theme.Holo.Dialog.NoFrame">
-    </style>
-
     <style name="Theme" parent="android:Theme.Holo">
         <item name="android:windowNoTitle">true</item>
         <item name="android:windowActionModeOverlay">true</item>
@@ -30,6 +27,10 @@
         <item name="android:windowShowWallpaper">true</item>
     </style>
 
+    <style name="Theme.WallpaperPicker">
+        <item name="android:screenOrientation">unspecified</item>
+    </style>
+
     <style name="WorkspaceIcon.Portrait">
         <item name="android:drawablePadding">2dip</item>
         <item name="android:paddingTop">0dip</item>
@@ -83,8 +84,4 @@
         <item name="android:textColor">#FFFFFFFF</item>
         <item name="android:textSize">16sp</item>
     </style>
-
-    <style name="config_orientation">
-        <item name="@android:screenOrientation">unspecified</item>
-    </style>
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 3c0ae8d46..0449b9349 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -18,8 +18,8 @@
 -->
 
 <resources>
-    <style name="Theme.WallpaperPicker" parent="android:Theme">
-        <item name="android:windowNoTitle">true</item>
+    <style name="Theme.WallpaperPicker">
+        <item name="android:screenOrientation">nosensor</item>
     </style>
 
     <style name="Theme.Base" parent="android:Theme.Wallpaper">
@@ -155,8 +155,4 @@
         <item name="android:layout_marginRight">4dip</item>
         <item name="android:background">@drawable/hotseat_bg_right</item>
     </style>
-
-    <style name="config_orientation">
-        <item name="@android:screenOrientation">nosensor</item>
-    </style>
 </resources>
diff --git a/src/com/android/launcher2/WallpaperChooser.java b/src/com/android/launcher2/WallpaperChooser.java
index 2311d1e9a..8a9d92f4a 100644
--- a/src/com/android/launcher2/WallpaperChooser.java
+++ b/src/com/android/launcher2/WallpaperChooser.java
@@ -33,6 +33,8 @@ public class WallpaperChooser extends Activity {
 
         Fragment fragmentView =
                 getFragmentManager().findFragmentById(R.id.wallpaper_chooser_fragment);
+        // TODO: The following code is currently not exercised. Leaving it here in case it
+        // needs to be revived again.
         if (fragmentView == null) {
             /* When the screen is XLarge, the fragment is not included in the layout, so show it
              * as a dialog
diff --git a/src/com/android/launcher2/WallpaperChooserDialogFragment.java b/src/com/android/launcher2/WallpaperChooserDialogFragment.java
index 4f133324c..c9e21f2da 100644
--- a/src/com/android/launcher2/WallpaperChooserDialogFragment.java
+++ b/src/com/android/launcher2/WallpaperChooserDialogFragment.java
@@ -15,8 +15,6 @@
  */
 package com.android.launcher2;
 
-import com.android.launcher.R;
-
 import android.app.Activity;
 import android.app.AlertDialog;
 import android.app.Dialog;
@@ -27,14 +25,17 @@ import android.content.DialogInterface;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.Paint;
 import android.graphics.drawable.Drawable;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
-import android.view.View.OnClickListener;
 import android.view.ViewGroup;
+import android.view.View.OnClickListener;
 import android.widget.AdapterView;
 import android.widget.BaseAdapter;
 import android.widget.FrameLayout;
@@ -44,6 +45,8 @@ import android.widget.ImageView;
 import android.widget.ListAdapter;
 import android.widget.SpinnerAdapter;
 
+import com.android.launcher.R;
+
 import java.io.IOException;
 import java.util.ArrayList;
 
@@ -55,12 +58,12 @@ public class WallpaperChooserDialogFragment extends DialogFragment implements
             + "WallpaperChooserDialogFragment.EMBEDDED_KEY";
 
     private boolean mEmbedded;
-    private ImageView mImageView = null;
     private Bitmap mBitmap = null;
 
     private ArrayList<Integer> mThumbs;
     private ArrayList<Integer> mImages;
     private WallpaperLoader mLoader;
+    private WallpaperDrawable mWallpaperDrawable = new WallpaperDrawable();
 
     public static WallpaperChooserDialogFragment newInstance() {
         WallpaperChooserDialogFragment fragment = new WallpaperChooserDialogFragment();
@@ -113,6 +116,9 @@ public class WallpaperChooserDialogFragment extends DialogFragment implements
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         findWallpapers();
 
+        // TODO: The following code is not exercised right now and may be removed
+        // if the dialog version is not needed.
+        /*
         final View v = getActivity().getLayoutInflater().inflate(
                 R.layout.wallpaper_chooser, null, false);
 
@@ -122,13 +128,15 @@ public class WallpaperChooserDialogFragment extends DialogFragment implements
 
         final int viewInset =
                 getResources().getDimensionPixelSize(R.dimen.alert_dialog_content_inset);
-
+        
         FrameLayout wallPaperList = (FrameLayout) v.findViewById(R.id.wallpaper_list);
         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
         builder.setNegativeButton(R.string.wallpaper_cancel, null);
         builder.setTitle(R.string.wallpaper_dialog_title);
-        builder.setView(wallPaperList, viewInset, viewInset, viewInset, viewInset);
-        return builder.create();
+        builder.setView(wallPaperList,
+        viewInset, viewInset, viewInset, viewInset); return builder.create();
+        */
+        return null;
     }
 
     @Override
@@ -142,6 +150,7 @@ public class WallpaperChooserDialogFragment extends DialogFragment implements
          */
         if (mEmbedded) {
             View view = inflater.inflate(R.layout.wallpaper_chooser, container, false);
+            view.setBackgroundDrawable(mWallpaperDrawable);
 
             final Gallery gallery = (Gallery) view.findViewById(R.id.gallery);
             gallery.setCallbackDuringFling(false);
@@ -155,7 +164,6 @@ public class WallpaperChooserDialogFragment extends DialogFragment implements
                     selectWallpaper(gallery.getSelectedItemPosition());
                 }
             });
-            mImageView = (ImageView) view.findViewById(R.id.wallpaper);
             return view;
         }
         return null;
@@ -299,20 +307,9 @@ public class WallpaperChooserDialogFragment extends DialogFragment implements
                     mBitmap.recycle();
                 }
 
-                // This should always be the case, but check anyways
-                final ImageView view = mImageView;
-                if (view != null) {
-                    view.setImageBitmap(b);
-
-                    mBitmap = b;
-
-                    final Drawable drawable = view.getDrawable();
-                    drawable.setFilterBitmap(true);
-                    drawable.setDither(true);
-
-                    view.postInvalidate();
-                }
-
+                mBitmap = b;
+                mWallpaperDrawable.setBitmap(b);
+                getView().postInvalidate();
                 mLoader = null;
             } else {
                b.recycle();
@@ -324,4 +321,47 @@ public class WallpaperChooserDialogFragment extends DialogFragment implements
             super.cancel(true);
         }
     }
+
+    /**
+     * Custom drawable that centers the bitmap fed to it.
+     */
+    static class WallpaperDrawable extends Drawable {
+
+        Bitmap mBitmap;
+        int mIntrinsicWidth;
+        int mIntrinsicHeight;
+
+        /* package */void setBitmap(Bitmap bitmap) {
+            mBitmap = bitmap;
+            if (mBitmap == null)
+                return;
+            mIntrinsicWidth = mBitmap.getWidth();
+            mIntrinsicHeight = mBitmap.getHeight();
+        }
+
+        @Override
+        public void draw(Canvas canvas) {
+            if (mBitmap == null) return;
+            int width = canvas.getWidth();
+            int height = canvas.getHeight();
+            int x = (width - mIntrinsicWidth) / 2;
+            int y = (height - mIntrinsicHeight) / 2;
+            canvas.drawBitmap(mBitmap, x, y, null);
+        }
+
+        @Override
+        public int getOpacity() {
+            return android.graphics.PixelFormat.OPAQUE;
+        }
+
+        @Override
+        public void setAlpha(int alpha) {
+            // Ignore
+        }
+
+        @Override
+        public void setColorFilter(ColorFilter cf) {
+            // Ignore
+        }
+    }
 }
\ No newline at end of file