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
onCreate(Bundle bundle)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
onSaveInstanceState(Bundle saveState)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)
getDefaultDisplaySize(Point size)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
onResume()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
onActivityResult(int requestCode, int resultCode, Intent data)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