src/com/android/gallery3d/app/Wallpaper.java

   1 /*
   2  * Copyright (C) 2007 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.gallery3d.app;
  18
  19 import android.annotation.TargetApi;
  20 import android.app.Activity;
  21 import android.content.Intent;
  22 import android.graphics.Point;
  23 import android.net.Uri;
  24 import android.os.Build;
  25 import android.os.Bundle;
  26 import android.view.Display;
  27
  28 import com.android.gallery3d.common.ApiHelper;
  29
  30 /**
  31  * Wallpaper picker for the gallery application. This just redirects to the
  32  * standard pick action.
  33  */
  34 public class Wallpaper extends Activity {
  35     @SuppressWarnings("unused")
  36     private static final String TAG = "Wallpaper";
  37
  38     private static final String IMAGE_TYPE = "image/*";
  39     private static final String KEY_STATE = "activity-state";
  40     private static final String KEY_PICKED_ITEM = "picked-item";
  41
  42     private static final int STATE_INIT = 0;
  43     private static final int STATE_PHOTO_PICKED = 1;
  44
  45     private int mState = STATE_INIT;
  46     private Uri mPickedItem;
  47
  48     @Override
  49     protected void onCreate(Bundle bundle) {
  50         super.onCreate(bundle);
  51         if (bundle != null) {
  52             mState = bundle.getInt(KEY_STATE);
  53             mPickedItem = (Uri) bundle.getParcelable(KEY_PICKED_ITEM);
  54         }
  55     }
  56
  57     @Override
  58     protected void onSaveInstanceState(Bundle saveState) {
  59         saveState.putInt(KEY_STATE, mState);
  60         if (mPickedItem != null) {
  61             saveState.putParcelable(KEY_PICKED_ITEM, mPickedItem);
  62         }
  63     }
  64
  65     @SuppressWarnings("deprecation")
  66     @TargetApi(ApiHelper.VERSION_CODES.HONEYCOMB_MR2)
  67     private Point getDefaultDisplaySize(Point size) {
  68         Display d = getWindowManager().getDefaultDisplay();
  69         if (Build.VERSION.SDK_INT >= ApiHelper.VERSION_CODES.HONEYCOMB_MR2) {
  70             d.getSize(size);
  71         } else {
  72             size.set(d.getWidth(), d.getHeight());
  73         }
  74         return size;
  75     }
  76
  77     @SuppressWarnings("fallthrough")
  78     @Override
  79     protected void onResume() {
  80         super.onResume();
  81         Intent intent = getIntent();
  82         switch (mState) {
  83             case STATE_INIT: {
  84                 mPickedItem = intent.getData();
  85                 if (mPickedItem == null) {
  86                     Intent request = new Intent(Intent.ACTION_GET_CONTENT)
  87                             .setClass(this, DialogPicker.class)
  88                             .setType(IMAGE_TYPE);
  89                     startActivityForResult(request, STATE_PHOTO_PICKED);
  90                     return;
  91                 }
  92                 mState = STATE_PHOTO_PICKED;
  93                 // fall-through
  94             }
  95             case STATE_PHOTO_PICKED: {
  96                 int width = getWallpaperDesiredMinimumWidth();
  97                 int height = getWallpaperDesiredMinimumHeight();
  98                 Point size = getDefaultDisplaySize(new Point());
  99                 float spotlightX = (float) size.x / width;
 100                 float spotlightY = (float) size.y / height;
 101                 Intent request = new Intent(CropImage.ACTION_CROP)
 102                         .setDataAndType(mPickedItem, IMAGE_TYPE)
 103                         .addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT)
 104                         .putExtra(CropImage.KEY_OUTPUT_X, width)
 105                         .putExtra(CropImage.KEY_OUTPUT_Y, height)
 106                         .putExtra(CropImage.KEY_ASPECT_X, width)
 107                         .putExtra(CropImage.KEY_ASPECT_Y, height)
 108                         .putExtra(CropImage.KEY_SPOTLIGHT_X, spotlightX)
 109                         .putExtra(CropImage.KEY_SPOTLIGHT_Y, spotlightY)
 110                         .putExtra(CropImage.KEY_SCALE, true)
 111                         .putExtra(CropImage.KEY_SCALE_UP_IF_NEEDED, true)
 112                         .putExtra(CropImage.KEY_NO_FACE_DETECTION, true)
 113                         .putExtra(CropImage.KEY_SET_AS_WALLPAPER, true);
 114                 startActivity(request);
 115                 finish();
 116             }
 117         }
 118     }
 119
 120     @Override
 121     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 122         if (resultCode != RESULT_OK) {
 123             setResult(resultCode);
 124             finish();
 125             return;
 126         }
 127         mState = requestCode;
 128         if (mState == STATE_PHOTO_PICKED) {
 129             mPickedItem = data.getData();
 130         }
 131
 132         // onResume() would be called next
 133     }
 134 }