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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.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 import com.android.gallery3d.filtershow.FilterShowActivity;
     30 import com.android.gallery3d.filtershow.crop.CropExtras;
     31 
     32 /**
     33  * Wallpaper picker for the gallery application. This just redirects to the
     34  * standard pick action.
     35  */
     36 public class Wallpaper extends Activity {
     37     @SuppressWarnings("unused")
     38     private static final String TAG = "Wallpaper";
     39 
     40     private static final String IMAGE_TYPE = "image/*";
     41     private static final String KEY_STATE = "activity-state";
     42     private static final String KEY_PICKED_ITEM = "picked-item";
     43 
     44     private static final int STATE_INIT = 0;
     45     private static final int STATE_PHOTO_PICKED = 1;
     46 
     47     private int mState = STATE_INIT;
     48     private Uri mPickedItem;
     49 
     50     @Override
     51     protected void onCreate(Bundle bundle) {
     52         super.onCreate(bundle);
     53         if (bundle != null) {
     54             mState = bundle.getInt(KEY_STATE);
     55             mPickedItem = (Uri) bundle.getParcelable(KEY_PICKED_ITEM);
     56         }
     57     }
     58 
     59     @Override
     60     protected void onSaveInstanceState(Bundle saveState) {
     61         saveState.putInt(KEY_STATE, mState);
     62         if (mPickedItem != null) {
     63             saveState.putParcelable(KEY_PICKED_ITEM, mPickedItem);
     64         }
     65     }
     66 
     67     @SuppressWarnings("deprecation")
     68     @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
     69     private Point getDefaultDisplaySize(Point size) {
     70         Display d = getWindowManager().getDefaultDisplay();
     71         if (Build.VERSION.SDK_INT >= ApiHelper.VERSION_CODES.HONEYCOMB_MR2) {
     72             d.getSize(size);
     73         } else {
     74             size.set(d.getWidth(), d.getHeight());
     75         }
     76         return size;
     77     }
     78 
     79     @SuppressWarnings("fallthrough")
     80     @Override
     81     protected void onResume() {
     82         super.onResume();
     83         Intent intent = getIntent();
     84         switch (mState) {
     85             case STATE_INIT: {
     86                 mPickedItem = intent.getData();
     87                 if (mPickedItem == null) {
     88                     Intent request = new Intent(Intent.ACTION_GET_CONTENT)
     89                             .setClass(this, DialogPicker.class)
     90                             .setType(IMAGE_TYPE);
     91                     startActivityForResult(request, STATE_PHOTO_PICKED);
     92                     return;
     93                 }
     94                 mState = STATE_PHOTO_PICKED;
     95                 // fall-through
     96             }
     97             case STATE_PHOTO_PICKED: {
     98                 int width = getWallpaperDesiredMinimumWidth();
     99                 int height = getWallpaperDesiredMinimumHeight();
    100                 Point size = getDefaultDisplaySize(new Point());
    101                 float spotlightX = (float) size.x / width;
    102                 float spotlightY = (float) size.y / height;
    103                 Intent request = new Intent(FilterShowActivity.CROP_ACTION)
    104                         .setDataAndType(mPickedItem, IMAGE_TYPE)
    105                         .addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT)
    106                         .putExtra(CropExtras.KEY_OUTPUT_X, width)
    107                         .putExtra(CropExtras.KEY_OUTPUT_Y, height)
    108                         .putExtra(CropExtras.KEY_ASPECT_X, width)
    109                         .putExtra(CropExtras.KEY_ASPECT_Y, height)
    110                         .putExtra(CropExtras.KEY_SPOTLIGHT_X, spotlightX)
    111                         .putExtra(CropExtras.KEY_SPOTLIGHT_Y, spotlightY)
    112                         .putExtra(CropExtras.KEY_SCALE, true)
    113                         .putExtra(CropExtras.KEY_SCALE_UP_IF_NEEDED, true)
    114                         .putExtra(CropExtras.KEY_SET_AS_WALLPAPER, true);
    115                 startActivity(request);
    116                 finish();
    117             }
    118         }
    119     }
    120 
    121     @Override
    122     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    123         if (resultCode != RESULT_OK) {
    124             setResult(resultCode);
    125             finish();
    126             return;
    127         }
    128         mState = requestCode;
    129         if (mState == STATE_PHOTO_PICKED) {
    130             mPickedItem = data.getData();
    131         }
    132 
    133         // onResume() would be called next
    134     }
    135 }
    136