1/*
2 * Copyright (C) 2009 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
17package com.android.wallpaper.livepicker;
18
19import android.app.Activity;
20import android.app.WallpaperManager;
21import android.app.WallpaperInfo;
22import android.app.Dialog;
23import android.service.wallpaper.IWallpaperConnection;
24import android.service.wallpaper.IWallpaperService;
25import android.service.wallpaper.IWallpaperEngine;
26import android.service.wallpaper.WallpaperSettingsActivity;
27import android.content.ServiceConnection;
28import android.content.Intent;
29import android.content.Context;
30import android.content.ComponentName;
31import android.os.RemoteException;
32import android.os.IBinder;
33import android.os.ParcelFileDescriptor;
34import android.os.Bundle;
35import android.view.MotionEvent;
36import android.view.View;
37import android.view.WindowManager;
38import android.view.ViewGroup;
39import android.view.Window;
40import android.view.LayoutInflater;
41import android.util.Log;
42import android.widget.TextView;
43
44public class LiveWallpaperPreview extends Activity {
45    static final String EXTRA_LIVE_WALLPAPER_INTENT = "android.live_wallpaper.intent";
46    static final String EXTRA_LIVE_WALLPAPER_SETTINGS = "android.live_wallpaper.settings";
47    static final String EXTRA_LIVE_WALLPAPER_PACKAGE = "android.live_wallpaper.package";
48
49    private static final String LOG_TAG = "LiveWallpaperPreview";
50
51    private WallpaperManager mWallpaperManager;
52    private WallpaperConnection mWallpaperConnection;
53
54    private String mSettings;
55    private String mPackageName;
56    private Intent mWallpaperIntent;
57    private View mView;
58    private Dialog mDialog;
59
60    static void showPreview(Activity activity, int code, Intent intent, WallpaperInfo info) {
61        if (info == null) {
62            Log.w(LOG_TAG, "Failure showing preview", new Throwable());
63            return;
64        }
65        Intent preview = new Intent(activity, LiveWallpaperPreview.class);
66        preview.putExtra(EXTRA_LIVE_WALLPAPER_INTENT, intent);
67        preview.putExtra(EXTRA_LIVE_WALLPAPER_SETTINGS, info.getSettingsActivity());
68        preview.putExtra(EXTRA_LIVE_WALLPAPER_PACKAGE, info.getPackageName());
69        activity.startActivityForResult(preview, code);
70    }
71
72    @Override
73    protected void onCreate(Bundle savedInstanceState) {
74        super.onCreate(savedInstanceState);
75
76        Bundle extras = getIntent().getExtras();
77        mWallpaperIntent = (Intent) extras.get(EXTRA_LIVE_WALLPAPER_INTENT);
78        if (mWallpaperIntent == null) {
79            setResult(RESULT_CANCELED);
80            finish();
81        }
82
83        setContentView(R.layout.live_wallpaper_preview);
84        mView = findViewById(R.id.configure);
85
86        mSettings = extras.getString(EXTRA_LIVE_WALLPAPER_SETTINGS);
87        mPackageName = extras.getString(EXTRA_LIVE_WALLPAPER_PACKAGE);
88        if (mSettings == null) {
89            mView.setVisibility(View.GONE);
90        }
91
92        mWallpaperManager = WallpaperManager.getInstance(this);
93
94        mWallpaperConnection = new WallpaperConnection(mWallpaperIntent);
95    }
96
97    public void setLiveWallpaper(View v) {
98        try {
99            mWallpaperManager.getIWallpaperManager().setWallpaperComponent(
100                    mWallpaperIntent.getComponent());
101            mWallpaperManager.setWallpaperOffsetSteps(0.5f, 0.0f);
102            mWallpaperManager.setWallpaperOffsets(v.getRootView().getWindowToken(), 0.5f, 0.0f);
103            setResult(RESULT_OK);
104        } catch (RemoteException e) {
105            // do nothing
106        } catch (RuntimeException e) {
107            Log.w(LOG_TAG, "Failure setting wallpaper", e);
108        }
109        finish();
110    }
111
112    @SuppressWarnings({"UnusedDeclaration"})
113    public void configureLiveWallpaper(View v) {
114        Intent intent = new Intent();
115        intent.setComponent(new ComponentName(mPackageName, mSettings));
116        intent.putExtra(WallpaperSettingsActivity.EXTRA_PREVIEW_MODE, true);
117        startActivity(intent);
118    }
119
120    @Override
121    public void onResume() {
122        super.onResume();
123        if (mWallpaperConnection != null && mWallpaperConnection.mEngine != null) {
124            try {
125                mWallpaperConnection.mEngine.setVisibility(true);
126            } catch (RemoteException e) {
127                // Ignore
128            }
129        }
130    }
131
132    @Override
133    public void onPause() {
134        super.onPause();
135        if (mWallpaperConnection != null && mWallpaperConnection.mEngine != null) {
136            try {
137                mWallpaperConnection.mEngine.setVisibility(false);
138            } catch (RemoteException e) {
139                // Ignore
140            }
141        }
142    }
143
144    @Override
145    public void onAttachedToWindow() {
146        super.onAttachedToWindow();
147
148        showLoading();
149
150        mView.post(new Runnable() {
151            public void run() {
152                if (!mWallpaperConnection.connect()) {
153                    mWallpaperConnection = null;
154                }
155            }
156        });
157    }
158
159    private void showLoading() {
160        LayoutInflater inflater = LayoutInflater.from(this);
161        TextView content = (TextView) inflater.inflate(R.layout.live_wallpaper_loading, null);
162
163        mDialog = new Dialog(this, android.R.style.Theme_Black);
164
165        Window window = mDialog.getWindow();
166        WindowManager.LayoutParams lp = window.getAttributes();
167
168        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
169        lp.height = WindowManager.LayoutParams.MATCH_PARENT;
170        window.setType(WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA);
171
172        mDialog.setContentView(content, new ViewGroup.LayoutParams(
173                ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT
174        ));
175        mDialog.show();
176    }
177
178    @Override
179    public void onDetachedFromWindow() {
180        super.onDetachedFromWindow();
181
182        if (mDialog != null) mDialog.dismiss();
183
184        if (mWallpaperConnection != null) {
185            mWallpaperConnection.disconnect();
186        }
187        mWallpaperConnection = null;
188    }
189
190    @Override
191    public boolean dispatchTouchEvent(MotionEvent ev) {
192        if (mWallpaperConnection != null && mWallpaperConnection.mEngine != null) {
193            MotionEvent dup = MotionEvent.obtainNoHistory(ev);
194            try {
195                mWallpaperConnection.mEngine.dispatchPointer(dup);
196            } catch (RemoteException e) {
197            }
198        }
199
200        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
201            onUserInteraction();
202        }
203        boolean handled = getWindow().superDispatchTouchEvent(ev);
204        if (!handled) {
205            handled = onTouchEvent(ev);
206        }
207
208        if (!handled && mWallpaperConnection != null && mWallpaperConnection.mEngine != null) {
209            int action = ev.getActionMasked();
210            try {
211                if (action == MotionEvent.ACTION_UP) {
212                    mWallpaperConnection.mEngine.dispatchWallpaperCommand(
213                            WallpaperManager.COMMAND_TAP,
214                            (int) ev.getX(), (int) ev.getY(), 0, null);
215                } else if (action == MotionEvent.ACTION_POINTER_UP) {
216                    int pointerIndex = ev.getActionIndex();
217                    mWallpaperConnection.mEngine.dispatchWallpaperCommand(
218                            WallpaperManager.COMMAND_SECONDARY_TAP,
219                            (int) ev.getX(pointerIndex), (int) ev.getY(pointerIndex), 0, null);
220                }
221            } catch (RemoteException e) {
222            }
223        }
224        return handled;
225    }
226
227    class WallpaperConnection extends IWallpaperConnection.Stub implements ServiceConnection {
228        final Intent mIntent;
229        IWallpaperService mService;
230        IWallpaperEngine mEngine;
231        boolean mConnected;
232
233        WallpaperConnection(Intent intent) {
234            mIntent = intent;
235        }
236
237        public boolean connect() {
238            synchronized (this) {
239                if (!bindService(mIntent, this, Context.BIND_AUTO_CREATE)) {
240                    return false;
241                }
242
243                mConnected = true;
244                return true;
245            }
246        }
247
248        public void disconnect() {
249            synchronized (this) {
250                mConnected = false;
251                if (mEngine != null) {
252                    try {
253                        mEngine.destroy();
254                    } catch (RemoteException e) {
255                        // Ignore
256                    }
257                    mEngine = null;
258                }
259                unbindService(this);
260                mService = null;
261            }
262        }
263
264        public void onServiceConnected(ComponentName name, IBinder service) {
265            if (mWallpaperConnection == this) {
266                mService = IWallpaperService.Stub.asInterface(service);
267                try {
268                    final View view = mView;
269                    final View root = view.getRootView();
270                    mService.attach(this, view.getWindowToken(),
271                            WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA_OVERLAY,
272                            true, root.getWidth(), root.getHeight());
273                } catch (RemoteException e) {
274                    Log.w(LOG_TAG, "Failed attaching wallpaper; clearing", e);
275                }
276            }
277        }
278
279        public void onServiceDisconnected(ComponentName name) {
280            mService = null;
281            mEngine = null;
282            if (mWallpaperConnection == this) {
283                Log.w(LOG_TAG, "Wallpaper service gone: " + name);
284            }
285        }
286
287        public void attachEngine(IWallpaperEngine engine) {
288            synchronized (this) {
289                if (mConnected) {
290                    mEngine = engine;
291                    try {
292                        engine.setVisibility(true);
293                    } catch (RemoteException e) {
294                        // Ignore
295                    }
296                } else {
297                    try {
298                        engine.destroy();
299                    } catch (RemoteException e) {
300                        // Ignore
301                    }
302                }
303            }
304        }
305
306        public ParcelFileDescriptor setWallpaper(String name) {
307            return null;
308        }
309
310        @Override
311        public void engineShown(IWallpaperEngine engine) throws RemoteException {
312        }
313    }
314}
315