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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.app.WallpaperManager;
     22 import android.content.ActivityNotFoundException;
     23 import android.content.Intent;
     24 import android.graphics.Point;
     25 import android.net.Uri;
     26 import android.os.Build;
     27 import android.os.Bundle;
     28 import android.view.Display;
     29 
     30 import com.android.gallery3d.common.ApiHelper;
     31 import com.android.gallery3d.filtershow.crop.CropActivity;
     32 import com.android.gallery3d.filtershow.crop.CropExtras;
     33 
     34 import java.lang.IllegalArgumentException;
     35 
     36 /**
     37  * Wallpaper picker for the gallery application. This just redirects to the
     38  * standard pick action.
     39  */
     40 public class Wallpaper extends Activity {
     41     @SuppressWarnings("unused")
     42     private static final String TAG = "Wallpaper";
     43 
     44     private static final String IMAGE_TYPE = "image/*";
     45     private static final String KEY_STATE = "activity-state";
     46     private static final String KEY_PICKED_ITEM = "picked-item";
     47 
     48     private static final int STATE_INIT = 0;
     49     private static final int STATE_PHOTO_PICKED = 1;
     50 
     51     private int mState = STATE_INIT;
     52     private Uri mPickedItem;
     53 
     54     @Override
     55     protected void onCreate(Bundle bundle) {
     56         super.onCreate(bundle);
     57         if (bundle != null) {
     58             mState = bundle.getInt(KEY_STATE);
     59             mPickedItem = (Uri) bundle.getParcelable(KEY_PICKED_ITEM);
     60         }
     61     }
     62 
     63     @Override
     64     protected void onSaveInstanceState(Bundle saveState) {
     65         saveState.putInt(KEY_STATE, mState);
     66         if (mPickedItem != null) {
     67             saveState.putParcelable(KEY_PICKED_ITEM, mPickedItem);
     68         }
     69     }
     70 
     71     @SuppressWarnings("deprecation")
     72     @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
     73     private Point getDefaultDisplaySize(Point size) {
     74         Display d = getWindowManager().getDefaultDisplay();
     75         if (Build.VERSION.SDK_INT >= ApiHelper.VERSION_CODES.HONEYCOMB_MR2) {
     76             d.getSize(size);
     77         } else {
     78             size.set(d.getWidth(), d.getHeight());
     79         }
     80         return size;
     81     }
     82 
     83     @SuppressWarnings("fallthrough")
     84     @Override
     85     protected void onResume() {
     86         super.onResume();
     87         Intent intent = getIntent();
     88         switch (mState) {
     89             case STATE_INIT: {
     90                 mPickedItem = intent.getData();
     91                 if (mPickedItem == null) {
     92                     Intent request = new Intent(Intent.ACTION_GET_CONTENT)
     93                             .setClass(this, DialogPicker.class)
     94                             .setType(IMAGE_TYPE);
     95                     startActivityForResult(request, STATE_PHOTO_PICKED);
     96                     return;
     97                 }
     98                 mState = STATE_PHOTO_PICKED;
     99                 // fall-through
    100             }
    101             case STATE_PHOTO_PICKED: {
    102                 Intent cropAndSetWallpaperIntent;
    103                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
    104                     WallpaperManager wpm = WallpaperManager.getInstance(getApplicationContext());
    105                     try {
    106                         cropAndSetWallpaperIntent = wpm.getCropAndSetWallpaperIntent(mPickedItem);
    107                         startActivity(cropAndSetWallpaperIntent);
    108                         finish();
    109                         return;
    110                     } catch (ActivityNotFoundException anfe) {
    111                         // ignored; fallthru to existing crop activity
    112                     } catch (IllegalArgumentException iae) {
    113                         // ignored; fallthru to existing crop activity
    114                     }
    115                 }
    116 
    117                 int width = getWallpaperDesiredMinimumWidth();
    118                 int height = getWallpaperDesiredMinimumHeight();
    119                 Point size = getDefaultDisplaySize(new Point());
    120                 float spotlightX = (float) size.x / width;
    121                 float spotlightY = (float) size.y / height;
    122                 cropAndSetWallpaperIntent = new Intent(CropActivity.CROP_ACTION)
    123                     .setClass(this, CropActivity.class)
    124                     .setDataAndType(mPickedItem, IMAGE_TYPE)
    125                     .addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT)
    126                     .putExtra(CropExtras.KEY_OUTPUT_X, width)
    127                     .putExtra(CropExtras.KEY_OUTPUT_Y, height)
    128                     .putExtra(CropExtras.KEY_ASPECT_X, width)
    129                     .putExtra(CropExtras.KEY_ASPECT_Y, height)
    130                     .putExtra(CropExtras.KEY_SPOTLIGHT_X, spotlightX)
    131                     .putExtra(CropExtras.KEY_SPOTLIGHT_Y, spotlightY)
    132                     .putExtra(CropExtras.KEY_SCALE, true)
    133                     .putExtra(CropExtras.KEY_SCALE_UP_IF_NEEDED, true)
    134                     .putExtra(CropExtras.KEY_SET_AS_WALLPAPER, true);
    135                 startActivity(cropAndSetWallpaperIntent);
    136                 finish();
    137             }
    138         }
    139     }
    140 
    141     @Override
    142     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    143         if (resultCode != RESULT_OK) {
    144             setResult(resultCode);
    145             finish();
    146             return;
    147         }
    148         mState = requestCode;
    149         if (mState == STATE_PHOTO_PICKED) {
    150             mPickedItem = data.getData();
    151         }
    152 
    153         // onResume() would be called next
    154     }
    155 }
    156