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