src/com/android/launcher/WallpaperChooser.java

   1 /*
   2  * Copyright (C) 2008 The Android Open Source Project
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package com.android.launcher;
  18
  19 import android.app.Activity;
  20 import android.os.Bundle;
  21 import android.util.Log;
  22 import android.view.LayoutInflater;
  23 import android.view.View;
  24 import android.view.ViewGroup;
  25 import android.view.Window;
  26 import android.view.View.OnClickListener;
  27 import android.widget.AdapterView;
  28 import android.widget.BaseAdapter;
  29 import android.widget.Button;
  30 import android.widget.Gallery;
  31 import android.widget.ImageView;
  32 import android.graphics.BitmapFactory;
  33 import android.graphics.Bitmap;
  34 import android.graphics.drawable.Drawable;
  35 import android.content.res.Resources;
  36
  37 import java.io.IOException;
  38 import java.io.InputStream;
  39 import java.util.ArrayList;
  40 import java.util.Collections;
  41
  42 public class WallpaperChooser extends Activity implements AdapterView.OnItemSelectedListener,
  43         OnClickListener {
  44
  45     private static final Integer[] THUMB_IDS = {
  46             R.drawable.wallpaper_lake_small,
  47             R.drawable.wallpaper_sunset_small,
  48             R.drawable.wallpaper_beach_small,
  49             R.drawable.wallpaper_snow_leopard_small,
  50             R.drawable.wallpaper_path_small,
  51             R.drawable.wallpaper_sunrise_small,
  52             R.drawable.wallpaper_mountain_small,
  53             R.drawable.wallpaper_road_small,
  54             R.drawable.wallpaper_jellyfish_small,
  55             R.drawable.wallpaper_zanzibar_small,
  56             R.drawable.wallpaper_blue_small,
  57             R.drawable.wallpaper_grey_small,
  58             R.drawable.wallpaper_green_small,
  59             R.drawable.wallpaper_pink_small,
  60     };
  61
  62     private static final Integer[] IMAGE_IDS = {
  63             com.android.internal.R.drawable.default_wallpaper,
  64             R.drawable.wallpaper_sunset,
  65             R.drawable.wallpaper_beach,
  66             R.drawable.wallpaper_snow_leopard,
  67             R.drawable.wallpaper_path,
  68             R.drawable.wallpaper_sunrise,
  69             R.drawable.wallpaper_mountain,
  70             R.drawable.wallpaper_road,
  71             R.drawable.wallpaper_jellyfish,
  72             R.drawable.wallpaper_zanzibar,
  73             R.drawable.wallpaper_blue,
  74             R.drawable.wallpaper_grey,
  75             R.drawable.wallpaper_green,
  76             R.drawable.wallpaper_pink,
  77     };
  78
  79     private Gallery mGallery;
  80     private ImageView mImageView;
  81     private boolean mIsWallpaperSet;
  82
  83     private BitmapFactory.Options mOptions;
  84     private Bitmap mBitmap;
  85
  86     private ArrayList<Integer> mThumbs;
  87     private ArrayList<Integer> mImages;
  88
  89     @Override
  90     public void onCreate(Bundle icicle) {
  91         super.onCreate(icicle);
  92         requestWindowFeature(Window.FEATURE_NO_TITLE);
  93
  94         findWallpapers();
  95
  96         setContentView(R.layout.wallpaper_chooser);
  97
  98         mOptions = new BitmapFactory.Options();
  99         mOptions.inDither = false;
 100         mOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;
 101
 102         mGallery = (Gallery) findViewById(R.id.gallery);
 103         mGallery.setAdapter(new ImageAdapter(this));
 104         mGallery.setOnItemSelectedListener(this);
 105         mGallery.setCallbackDuringFling(false);
 106
 107         Button b = (Button) findViewById(R.id.set);
 108         b.setOnClickListener(this);
 109
 110         mImageView = (ImageView) findViewById(R.id.wallpaper);
 111     }
 112
 113     private void findWallpapers() {
 114         mThumbs = new ArrayList<Integer>(THUMB_IDS.length + 4);
 115         Collections.addAll(mThumbs, THUMB_IDS);
 116
 117         mImages = new ArrayList<Integer>(IMAGE_IDS.length + 4);
 118         Collections.addAll(mImages, IMAGE_IDS);
 119
 120         final Resources resources = getResources();
 121         final String[] extras = resources.getStringArray(R.array.extra_wallpapers);
 122         final String packageName = getApplication().getPackageName();
 123
 124         for (String extra : extras) {
 125             int res = resources.getIdentifier(extra, "drawable", packageName);
 126             if (res != 0) {
 127                 final int thumbRes = resources.getIdentifier(extra + "_small",
 128                         "drawable", packageName);
 129
 130                 if (thumbRes != 0) {
 131                     mThumbs.add(thumbRes);
 132                     mImages.add(res);
 133                 }
 134             }
 135         }
 136     }
 137
 138     @Override
 139     protected void onResume() {
 140         super.onResume();
 141         mIsWallpaperSet = false;
 142     }
 143
 144     public void onItemSelected(AdapterView parent, View v, int position, long id) {
 145         final ImageView view = mImageView;
 146         Bitmap b = BitmapFactory.decodeResource(getResources(), mImages.get(position), mOptions);
 147         view.setImageBitmap(b);
 148
 149         // Help the GC
 150         if (mBitmap != null) {
 151             mBitmap.recycle();
 152         }
 153         mBitmap = b;
 154
 155         final Drawable drawable = view.getDrawable();
 156         drawable.setFilterBitmap(true);
 157         drawable.setDither(true);
 158     }
 159
 160     /*
 161      * When using touch if you tap an image it triggers both the onItemClick and
 162      * the onTouchEvent causing the wallpaper to be set twice. Ensure we only
 163      * set the wallpaper once.
 164      */
 165     private void selectWallpaper(int position) {
 166         if (mIsWallpaperSet) {
 167             return;
 168         }
 169
 170         mIsWallpaperSet = true;
 171         try {
 172             InputStream stream = getResources().openRawResource(mImages.get(position));
 173             setWallpaper(stream);
 174             setResult(RESULT_OK);
 175             finish();
 176         } catch (IOException e) {
 177             Log.e(Launcher.LOG_TAG, "Failed to set wallpaper: " + e);
 178         }
 179     }
 180
 181     public void onNothingSelected(AdapterView parent) {
 182     }
 183
 184     private class ImageAdapter extends BaseAdapter {
 185         private LayoutInflater mLayoutInflater;
 186
 187         ImageAdapter(WallpaperChooser context) {
 188             mLayoutInflater = context.getLayoutInflater();
 189         }
 190
 191         public int getCount() {
 192             return mThumbs.size();
 193         }
 194
 195         public Object getItem(int position) {
 196             return position;
 197         }
 198
 199         public long getItemId(int position) {
 200             return position;
 201         }
 202
 203         public View getView(int position, View convertView, ViewGroup parent) {
 204             ImageView image;
 205
 206             if (convertView == null) {
 207                 image = (ImageView) mLayoutInflater.inflate(R.layout.wallpaper_item, parent, false);
 208             } else {
 209                 image = (ImageView) convertView;
 210             }
 211
 212             image.setImageResource(mThumbs.get(position));
 213             image.getDrawable().setDither(true);
 214             return image;
 215         }
 216     }
 217
 218     public void onClick(View v) {
 219         selectWallpaper(mGallery.getSelectedItemPosition());
 220     }
 221 }