WindowManager.java revision 8eb2e244f9b14d946ee587d0b673b866865026c0
1/*
2 * Copyright (C) 2006 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 android.view;
18
19import android.content.pm.ActivityInfo;
20import android.graphics.PixelFormat;
21import android.os.IBinder;
22import android.os.Parcel;
23import android.os.Parcelable;
24import android.text.TextUtils;
25import android.util.Log;
26
27
28/**
29 * The interface that apps use to talk to the window manager.
30 * <p>
31 * Use <code>Context.getSystemService(Context.WINDOW_SERVICE)</code> to get one of these.
32 *
33 * @see android.content.Context#getSystemService
34 * @see android.content.Context#WINDOW_SERVICE
35 */
36public interface WindowManager extends ViewManager {
37    /**
38     * Exception that is thrown when trying to add view whose
39     * {@link WindowManager.LayoutParams} {@link WindowManager.LayoutParams#token}
40     * is invalid.
41     */
42    public static class BadTokenException extends RuntimeException {
43        public BadTokenException() {
44        }
45
46        public BadTokenException(String name) {
47            super(name);
48        }
49    }
50
51    /**
52     * Use this method to get the default Display object.
53     *
54     * @return default Display object
55     */
56    public Display getDefaultDisplay();
57
58    /**
59     * Special variation of {@link #removeView} that immediately invokes
60     * the given view hierarchy's {@link View#onDetachedFromWindow()
61     * View.onDetachedFromWindow()} methods before returning.  This is not
62     * for normal applications; using it correctly requires great care.
63     *
64     * @param view The view to be removed.
65     */
66    public void removeViewImmediate(View view);
67
68    public static class LayoutParams extends ViewGroup.LayoutParams
69            implements Parcelable {
70        /**
71         * X position for this window.  With the default gravity it is ignored.
72         * When using {@link Gravity#LEFT} or {@link Gravity#RIGHT} it provides
73         * an offset from the given edge.
74         */
75        @ViewDebug.ExportedProperty
76        public int x;
77
78        /**
79         * Y position for this window.  With the default gravity it is ignored.
80         * When using {@link Gravity#TOP} or {@link Gravity#BOTTOM} it provides
81         * an offset from the given edge.
82         */
83        @ViewDebug.ExportedProperty
84        public int y;
85
86        /**
87         * Indicates how much of the extra space will be allocated horizontally
88         * to the view associated with these LayoutParams. Specify 0 if the view
89         * should not be stretched. Otherwise the extra pixels will be pro-rated
90         * among all views whose weight is greater than 0.
91         */
92        @ViewDebug.ExportedProperty
93        public float horizontalWeight;
94
95        /**
96         * Indicates how much of the extra space will be allocated vertically
97         * to the view associated with these LayoutParams. Specify 0 if the view
98         * should not be stretched. Otherwise the extra pixels will be pro-rated
99         * among all views whose weight is greater than 0.
100         */
101        @ViewDebug.ExportedProperty
102        public float verticalWeight;
103
104        /**
105         * The general type of window.  There are three main classes of
106         * window types:
107         * <ul>
108         * <li> <strong>Application windows</strong> (ranging from
109         * {@link #FIRST_APPLICATION_WINDOW} to
110         * {@link #LAST_APPLICATION_WINDOW}) are normal top-level application
111         * windows.  For these types of windows, the {@link #token} must be
112         * set to the token of the activity they are a part of (this will
113         * normally be done for you if {@link #token} is null).
114         * <li> <strong>Sub-windows</strong> (ranging from
115         * {@link #FIRST_SUB_WINDOW} to
116         * {@link #LAST_SUB_WINDOW}) are associated with another top-level
117         * window.  For these types of windows, the {@link #token} must be
118         * the token of the window it is attached to.
119         * <li> <strong>System windows</strong> (ranging from
120         * {@link #FIRST_SYSTEM_WINDOW} to
121         * {@link #LAST_SYSTEM_WINDOW}) are special types of windows for
122         * use by the system for specific purposes.  They should not normally
123         * be used by applications, and a special permission is required
124         * to use them.
125         * </ul>
126         *
127         * @see #TYPE_BASE_APPLICATION
128         * @see #TYPE_APPLICATION
129         * @see #TYPE_APPLICATION_STARTING
130         * @see #TYPE_APPLICATION_PANEL
131         * @see #TYPE_APPLICATION_MEDIA
132         * @see #TYPE_APPLICATION_SUB_PANEL
133         * @see #TYPE_APPLICATION_ATTACHED_DIALOG
134         * @see #TYPE_STATUS_BAR
135         * @see #TYPE_SEARCH_BAR
136         * @see #TYPE_PHONE
137         * @see #TYPE_SYSTEM_ALERT
138         * @see #TYPE_KEYGUARD
139         * @see #TYPE_TOAST
140         * @see #TYPE_SYSTEM_OVERLAY
141         * @see #TYPE_PRIORITY_PHONE
142         * @see #TYPE_STATUS_BAR_PANEL
143         * @see #TYPE_SYSTEM_DIALOG
144         * @see #TYPE_KEYGUARD_DIALOG
145         * @see #TYPE_SYSTEM_ERROR
146         * @see #TYPE_INPUT_METHOD
147         * @see #TYPE_INPUT_METHOD_DIALOG
148         */
149        @ViewDebug.ExportedProperty(mapping = {
150            @ViewDebug.IntToString(from = TYPE_BASE_APPLICATION, to = "TYPE_BASE_APPLICATION"),
151            @ViewDebug.IntToString(from = TYPE_APPLICATION, to = "TYPE_APPLICATION"),
152            @ViewDebug.IntToString(from = TYPE_APPLICATION_STARTING, to = "TYPE_APPLICATION_STARTING"),
153            @ViewDebug.IntToString(from = TYPE_APPLICATION_PANEL, to = "TYPE_APPLICATION_PANEL"),
154            @ViewDebug.IntToString(from = TYPE_APPLICATION_MEDIA, to = "TYPE_APPLICATION_MEDIA"),
155            @ViewDebug.IntToString(from = TYPE_APPLICATION_SUB_PANEL, to = "TYPE_APPLICATION_SUB_PANEL"),
156            @ViewDebug.IntToString(from = TYPE_APPLICATION_ATTACHED_DIALOG, to = "TYPE_APPLICATION_ATTACHED_DIALOG"),
157            @ViewDebug.IntToString(from = TYPE_STATUS_BAR, to = "TYPE_STATUS_BAR"),
158            @ViewDebug.IntToString(from = TYPE_SEARCH_BAR, to = "TYPE_SEARCH_BAR"),
159            @ViewDebug.IntToString(from = TYPE_PHONE, to = "TYPE_PHONE"),
160            @ViewDebug.IntToString(from = TYPE_SYSTEM_ALERT, to = "TYPE_SYSTEM_ALERT"),
161            @ViewDebug.IntToString(from = TYPE_KEYGUARD, to = "TYPE_KEYGUARD"),
162            @ViewDebug.IntToString(from = TYPE_TOAST, to = "TYPE_TOAST"),
163            @ViewDebug.IntToString(from = TYPE_SYSTEM_OVERLAY, to = "TYPE_SYSTEM_OVERLAY"),
164            @ViewDebug.IntToString(from = TYPE_PRIORITY_PHONE, to = "TYPE_PRIORITY_PHONE"),
165            @ViewDebug.IntToString(from = TYPE_STATUS_BAR_PANEL, to = "TYPE_STATUS_BAR_PANEL"),
166            @ViewDebug.IntToString(from = TYPE_SYSTEM_DIALOG, to = "TYPE_SYSTEM_DIALOG"),
167            @ViewDebug.IntToString(from = TYPE_KEYGUARD_DIALOG, to = "TYPE_KEYGUARD_DIALOG"),
168            @ViewDebug.IntToString(from = TYPE_SYSTEM_ERROR, to = "TYPE_SYSTEM_ERROR"),
169            @ViewDebug.IntToString(from = TYPE_INPUT_METHOD, to = "TYPE_INPUT_METHOD"),
170            @ViewDebug.IntToString(from = TYPE_INPUT_METHOD_DIALOG, to = "TYPE_INPUT_METHOD_DIALOG"),
171            @ViewDebug.IntToString(from = TYPE_SECURE_SYSTEM_OVERLAY, to = "TYPE_SECURE_SYSTEM_OVERLAY")
172        })
173        public int type;
174
175        /**
176         * Start of window types that represent normal application windows.
177         */
178        public static final int FIRST_APPLICATION_WINDOW = 1;
179
180        /**
181         * Window type: an application window that serves as the "base" window
182         * of the overall application; all other application windows will
183         * appear on top of it.
184         */
185        public static final int TYPE_BASE_APPLICATION   = 1;
186
187        /**
188         * Window type: a normal application window.  The {@link #token} must be
189         * an Activity token identifying who the window belongs to.
190         */
191        public static final int TYPE_APPLICATION        = 2;
192
193        /**
194         * Window type: special application window that is displayed while the
195         * application is starting.  Not for use by applications themselves;
196         * this is used by the system to display something until the
197         * application can show its own windows.
198         */
199        public static final int TYPE_APPLICATION_STARTING = 3;
200
201        /**
202         * End of types of application windows.
203         */
204        public static final int LAST_APPLICATION_WINDOW = 99;
205
206        /**
207         * Start of types of sub-windows.  The {@link #token} of these windows
208         * must be set to the window they are attached to.  These types of
209         * windows are kept next to their attached window in Z-order, and their
210         * coordinate space is relative to their attached window.
211         */
212        public static final int FIRST_SUB_WINDOW        = 1000;
213
214        /**
215         * Window type: a panel on top of an application window.  These windows
216         * appear on top of their attached window.
217         */
218        public static final int TYPE_APPLICATION_PANEL  = FIRST_SUB_WINDOW;
219
220        /**
221         * Window type: window for showing media (e.g. video).  These windows
222         * are displayed behind their attached window.
223         */
224        public static final int TYPE_APPLICATION_MEDIA  = FIRST_SUB_WINDOW+1;
225
226        /**
227         * Window type: a sub-panel on top of an application window.  These
228         * windows are displayed on top their attached window and any
229         * {@link #TYPE_APPLICATION_PANEL} panels.
230         */
231        public static final int TYPE_APPLICATION_SUB_PANEL = FIRST_SUB_WINDOW+2;
232
233        /** Window type: like {@link #TYPE_APPLICATION_PANEL}, but layout
234         * of the window happens as that of a top-level window, <em>not</em>
235         * as a child of its container.
236         */
237        public static final int TYPE_APPLICATION_ATTACHED_DIALOG = FIRST_SUB_WINDOW+3;
238
239        /**
240         * Window type: window for showing overlays on top of media windows.
241         * These windows are displayed between TYPE_APPLICATION_MEDIA and the
242         * application window.  They should be translucent to be useful.  This
243         * is a big ugly hack so:
244         * @hide
245         */
246        public static final int TYPE_APPLICATION_MEDIA_OVERLAY  = FIRST_SUB_WINDOW+4;
247
248        /**
249         * End of types of sub-windows.
250         */
251        public static final int LAST_SUB_WINDOW         = 1999;
252
253        /**
254         * Start of system-specific window types.  These are not normally
255         * created by applications.
256         */
257        public static final int FIRST_SYSTEM_WINDOW     = 2000;
258
259        /**
260         * Window type: the status bar.  There can be only one status bar
261         * window; it is placed at the top of the screen, and all other
262         * windows are shifted down so they are below it.
263         */
264        public static final int TYPE_STATUS_BAR         = FIRST_SYSTEM_WINDOW;
265
266        /**
267         * Window type: the search bar.  There can be only one search bar
268         * window; it is placed at the top of the screen.
269         */
270        public static final int TYPE_SEARCH_BAR         = FIRST_SYSTEM_WINDOW+1;
271
272        /**
273         * Window type: phone.  These are non-application windows providing
274         * user interaction with the phone (in particular incoming calls).
275         * These windows are normally placed above all applications, but behind
276         * the status bar.
277         */
278        public static final int TYPE_PHONE              = FIRST_SYSTEM_WINDOW+2;
279
280        /**
281         * Window type: system window, such as low power alert. These windows
282         * are always on top of application windows.
283         */
284        public static final int TYPE_SYSTEM_ALERT       = FIRST_SYSTEM_WINDOW+3;
285
286        /**
287         * Window type: keyguard window.
288         */
289        public static final int TYPE_KEYGUARD           = FIRST_SYSTEM_WINDOW+4;
290
291        /**
292         * Window type: transient notifications.
293         */
294        public static final int TYPE_TOAST              = FIRST_SYSTEM_WINDOW+5;
295
296        /**
297         * Window type: system overlay windows, which need to be displayed
298         * on top of everything else.  These windows must not take input
299         * focus, or they will interfere with the keyguard.
300         */
301        public static final int TYPE_SYSTEM_OVERLAY     = FIRST_SYSTEM_WINDOW+6;
302
303        /**
304         * Window type: priority phone UI, which needs to be displayed even if
305         * the keyguard is active.  These windows must not take input
306         * focus, or they will interfere with the keyguard.
307         */
308        public static final int TYPE_PRIORITY_PHONE     = FIRST_SYSTEM_WINDOW+7;
309
310        /**
311         * Window type: panel that slides out from the status bar
312         */
313        public static final int TYPE_SYSTEM_DIALOG      = FIRST_SYSTEM_WINDOW+8;
314
315        /**
316         * Window type: dialogs that the keyguard shows
317         */
318        public static final int TYPE_KEYGUARD_DIALOG    = FIRST_SYSTEM_WINDOW+9;
319
320        /**
321         * Window type: internal system error windows, appear on top of
322         * everything they can.
323         */
324        public static final int TYPE_SYSTEM_ERROR       = FIRST_SYSTEM_WINDOW+10;
325
326        /**
327         * Window type: internal input methods windows, which appear above
328         * the normal UI.  Application windows may be resized or panned to keep
329         * the input focus visible while this window is displayed.
330         */
331        public static final int TYPE_INPUT_METHOD       = FIRST_SYSTEM_WINDOW+11;
332
333        /**
334         * Window type: internal input methods dialog windows, which appear above
335         * the current input method window.
336         */
337        public static final int TYPE_INPUT_METHOD_DIALOG= FIRST_SYSTEM_WINDOW+12;
338
339        /**
340         * Window type: wallpaper window, placed behind any window that wants
341         * to sit on top of the wallpaper.
342         */
343        public static final int TYPE_WALLPAPER          = FIRST_SYSTEM_WINDOW+13;
344
345        /**
346         * Window type: panel that slides out from the status bar
347         */
348        public static final int TYPE_STATUS_BAR_PANEL   = FIRST_SYSTEM_WINDOW+14;
349
350        /**
351         * Window type: secure system overlay windows, which need to be displayed
352         * on top of everything else.  These windows must not take input
353         * focus, or they will interfere with the keyguard.
354         *
355         * This is exactly like {@link #TYPE_SYSTEM_OVERLAY} except that only the
356         * system itself is allowed to create these overlays.  Applications cannot
357         * obtain permission to create secure system overlays.
358         * @hide
359         */
360        public static final int TYPE_SECURE_SYSTEM_OVERLAY = FIRST_SYSTEM_WINDOW+15;
361
362        /**
363         * Window type: the drag-and-drop pseudowindow.  There is only one
364         * drag layer (at most), and it is placed on top of all other windows.
365         * @hide
366         */
367        public static final int TYPE_DRAG               = FIRST_SYSTEM_WINDOW+16;
368
369        /**
370         * End of types of system windows.
371         */
372        public static final int LAST_SYSTEM_WINDOW      = 2999;
373
374        /**
375         * Specifies what type of memory buffers should be used by this window.
376         * Default is normal.
377         *
378         * @see #MEMORY_TYPE_NORMAL
379         * @see #MEMORY_TYPE_PUSH_BUFFERS
380         */
381        public int memoryType;
382
383        /** Memory type: The window's surface is allocated in main memory. */
384        public static final int MEMORY_TYPE_NORMAL = 0;
385        /** Memory type: The window's surface is configured to be accessible
386         * by DMA engines and hardware accelerators.
387         * @deprecated this is ignored, this value is set automatically when needed.
388         */
389        @Deprecated
390        public static final int MEMORY_TYPE_HARDWARE = 1;
391        /** Memory type: The window's surface is configured to be accessible
392         * by graphics accelerators.
393         * @deprecated this is ignored, this value is set automatically when needed.
394         */
395        @Deprecated
396        public static final int MEMORY_TYPE_GPU = 2;
397        /** Memory type: The window's surface doesn't own its buffers and
398         * therefore cannot be locked. Instead the buffers are pushed to
399         * it through native binder calls. */
400        public static final int MEMORY_TYPE_PUSH_BUFFERS = 3;
401
402        /**
403         * Various behavioral options/flags.  Default is none.
404         *
405         * @see #FLAG_BLUR_BEHIND
406         * @see #FLAG_DIM_BEHIND
407         * @see #FLAG_NOT_FOCUSABLE
408         * @see #FLAG_NOT_TOUCHABLE
409         * @see #FLAG_NOT_TOUCH_MODAL
410         * @see #FLAG_LAYOUT_IN_SCREEN
411         * @see #FLAG_DITHER
412         * @see #FLAG_KEEP_SCREEN_ON
413         * @see #FLAG_FULLSCREEN
414         * @see #FLAG_FORCE_NOT_FULLSCREEN
415         * @see #FLAG_IGNORE_CHEEK_PRESSES
416         * @see #FLAG_HARDWARE_ACCELERATED
417         */
418        @ViewDebug.ExportedProperty(flagMapping = {
419            @ViewDebug.FlagToString(mask = FLAG_BLUR_BEHIND, equals = FLAG_BLUR_BEHIND,
420                    name = "FLAG_BLUR_BEHIND"),
421            @ViewDebug.FlagToString(mask = FLAG_DIM_BEHIND, equals = FLAG_DIM_BEHIND,
422                    name = "FLAG_DIM_BEHIND"),
423            @ViewDebug.FlagToString(mask = FLAG_NOT_FOCUSABLE, equals = FLAG_NOT_FOCUSABLE,
424                    name = "FLAG_NOT_FOCUSABLE"),
425            @ViewDebug.FlagToString(mask = FLAG_NOT_TOUCHABLE, equals = FLAG_NOT_TOUCHABLE,
426                    name = "FLAG_NOT_TOUCHABLE"),
427            @ViewDebug.FlagToString(mask = FLAG_NOT_TOUCH_MODAL, equals = FLAG_NOT_TOUCH_MODAL,
428                    name = "FLAG_NOT_TOUCH_MODAL"),
429            @ViewDebug.FlagToString(mask = FLAG_LAYOUT_IN_SCREEN, equals = FLAG_LAYOUT_IN_SCREEN,
430                    name = "FLAG_LAYOUT_IN_SCREEN"),
431            @ViewDebug.FlagToString(mask = FLAG_DITHER, equals = FLAG_DITHER,
432                    name = "FLAG_DITHER"),
433            @ViewDebug.FlagToString(mask = FLAG_TURN_SCREEN_ON, equals = FLAG_TURN_SCREEN_ON,
434                    name = "FLAG_TURN_SCREEN_ON"),
435            @ViewDebug.FlagToString(mask = FLAG_KEEP_SCREEN_ON, equals = FLAG_KEEP_SCREEN_ON,
436                    name = "FLAG_KEEP_SCREEN_ON"),
437            @ViewDebug.FlagToString(mask = FLAG_SHOW_WHEN_LOCKED, equals = FLAG_SHOW_WHEN_LOCKED,
438                    name = "FLAG_SHOW_WHEN_LOCKED"),
439            @ViewDebug.FlagToString(mask = FLAG_ALLOW_LOCK_WHILE_SCREEN_ON, equals = FLAG_ALLOW_LOCK_WHILE_SCREEN_ON,
440                    name = "FLAG_ALLOW_LOCK_WHILE_SCREEN_ON"),
441            @ViewDebug.FlagToString(mask = FLAG_DISMISS_KEYGUARD, equals = FLAG_DISMISS_KEYGUARD,
442                    name = "FLAG_DISMISS_KEYGUARD"),
443            @ViewDebug.FlagToString(mask = FLAG_FULLSCREEN, equals = FLAG_FULLSCREEN,
444                    name = "FLAG_FULLSCREEN"),
445            @ViewDebug.FlagToString(mask = FLAG_FORCE_NOT_FULLSCREEN,
446                    equals = FLAG_FORCE_NOT_FULLSCREEN, name = "FLAG_FORCE_NOT_FULLSCREEN"),
447            @ViewDebug.FlagToString(mask = FLAG_IGNORE_CHEEK_PRESSES,
448                    equals = FLAG_IGNORE_CHEEK_PRESSES, name = "FLAG_IGNORE_CHEEK_PRESSES"),
449            @ViewDebug.FlagToString(mask = FLAG_HARDWARE_ACCELERATED,
450                    equals = FLAG_HARDWARE_ACCELERATED, name = "FLAG_HARDWARE_ACCELERATED")
451        })
452        public int flags;
453
454        /** Window flag: as long as this window is visible to the user, allow
455         *  the lock screen to activate while the screen is on.
456         *  This can be used independently, or in combination with
457         *  {@link #FLAG_KEEP_SCREEN_ON} and/or {@link #FLAG_SHOW_WHEN_LOCKED} */
458        public static final int FLAG_ALLOW_LOCK_WHILE_SCREEN_ON     = 0x00000001;
459
460        /** Window flag: everything behind this window will be dimmed.
461         *  Use {@link #dimAmount} to control the amount of dim. */
462        public static final int FLAG_DIM_BEHIND        = 0x00000002;
463
464        /** Window flag: blur everything behind this window. */
465        public static final int FLAG_BLUR_BEHIND        = 0x00000004;
466
467        /** Window flag: this window won't ever get key input focus, so the
468         * user can not send key or other button events to it.  Those will
469         * instead go to whatever focusable window is behind it.  This flag
470         * will also enable {@link #FLAG_NOT_TOUCH_MODAL} whether or not that
471         * is explicitly set.
472         *
473         * <p>Setting this flag also implies that the window will not need to
474         * interact with
475         * a soft input method, so it will be Z-ordered and positioned
476         * independently of any active input method (typically this means it
477         * gets Z-ordered on top of the input method, so it can use the full
478         * screen for its content and cover the input method if needed.  You
479         * can use {@link #FLAG_ALT_FOCUSABLE_IM} to modify this behavior. */
480        public static final int FLAG_NOT_FOCUSABLE      = 0x00000008;
481
482        /** Window flag: this window can never receive touch events. */
483        public static final int FLAG_NOT_TOUCHABLE      = 0x00000010;
484
485        /** Window flag: Even when this window is focusable (its
486         * {@link #FLAG_NOT_FOCUSABLE is not set), allow any pointer events
487         * outside of the window to be sent to the windows behind it.  Otherwise
488         * it will consume all pointer events itself, regardless of whether they
489         * are inside of the window. */
490        public static final int FLAG_NOT_TOUCH_MODAL    = 0x00000020;
491
492        /** Window flag: When set, if the device is asleep when the touch
493         * screen is pressed, you will receive this first touch event.  Usually
494         * the first touch event is consumed by the system since the user can
495         * not see what they are pressing on.
496         */
497        public static final int FLAG_TOUCHABLE_WHEN_WAKING = 0x00000040;
498
499        /** Window flag: as long as this window is visible to the user, keep
500         *  the device's screen turned on and bright. */
501        public static final int FLAG_KEEP_SCREEN_ON     = 0x00000080;
502
503        /** Window flag: place the window within the entire screen, ignoring
504         *  decorations around the border (a.k.a. the status bar).  The
505         *  window must correctly position its contents to take the screen
506         *  decoration into account.  This flag is normally set for you
507         *  by Window as described in {@link Window#setFlags}. */
508        public static final int FLAG_LAYOUT_IN_SCREEN   = 0x00000100;
509
510        /** Window flag: allow window to extend outside of the screen. */
511        public static final int FLAG_LAYOUT_NO_LIMITS   = 0x00000200;
512
513        /** Window flag: Hide all screen decorations (e.g. status bar) while
514         * this window is displayed.  This allows the window to use the entire
515         * display space for itself -- the status bar will be hidden when
516         * an app window with this flag set is on the top layer. */
517        public static final int FLAG_FULLSCREEN      = 0x00000400;
518
519        /** Window flag: Override {@link #FLAG_FULLSCREEN and force the
520         *  screen decorations (such as status bar) to be shown. */
521        public static final int FLAG_FORCE_NOT_FULLSCREEN   = 0x00000800;
522
523        /** Window flag: turn on dithering when compositing this window to
524         *  the screen. */
525        public static final int FLAG_DITHER             = 0x00001000;
526
527        /** Window flag: don't allow screen shots while this window is
528         * displayed. */
529        public static final int FLAG_SECURE             = 0x00002000;
530
531        /** Window flag: a special mode where the layout parameters are used
532         * to perform scaling of the surface when it is composited to the
533         * screen. */
534        public static final int FLAG_SCALED             = 0x00004000;
535
536        /** Window flag: intended for windows that will often be used when the user is
537         * holding the screen against their face, it will aggressively filter the event
538         * stream to prevent unintended presses in this situation that may not be
539         * desired for a particular window, when such an event stream is detected, the
540         * application will receive a CANCEL motion event to indicate this so applications
541         * can handle this accordingly by taking no action on the event
542         * until the finger is released. */
543        public static final int FLAG_IGNORE_CHEEK_PRESSES    = 0x00008000;
544
545        /** Window flag: a special option only for use in combination with
546         * {@link #FLAG_LAYOUT_IN_SCREEN}.  When requesting layout in the
547         * screen your window may appear on top of or behind screen decorations
548         * such as the status bar.  By also including this flag, the window
549         * manager will report the inset rectangle needed to ensure your
550         * content is not covered by screen decorations.  This flag is normally
551         * set for you by Window as described in {@link Window#setFlags}.*/
552        public static final int FLAG_LAYOUT_INSET_DECOR = 0x00010000;
553
554        /** Window flag: invert the state of {@link #FLAG_NOT_FOCUSABLE} with
555         * respect to how this window interacts with the current method.  That
556         * is, if FLAG_NOT_FOCUSABLE is set and this flag is set, then the
557         * window will behave as if it needs to interact with the input method
558         * and thus be placed behind/away from it; if FLAG_NOT_FOCUSABLE is
559         * not set and this flag is set, then the window will behave as if it
560         * doesn't need to interact with the input method and can be placed
561         * to use more space and cover the input method.
562         */
563        public static final int FLAG_ALT_FOCUSABLE_IM = 0x00020000;
564
565        /** Window flag: if you have set {@link #FLAG_NOT_TOUCH_MODAL}, you
566         * can set this flag to receive a single special MotionEvent with
567         * the action
568         * {@link MotionEvent#ACTION_OUTSIDE MotionEvent.ACTION_OUTSIDE} for
569         * touches that occur outside of your window.  Note that you will not
570         * receive the full down/move/up gesture, only the location of the
571         * first down as an ACTION_OUTSIDE.
572         */
573        public static final int FLAG_WATCH_OUTSIDE_TOUCH = 0x00040000;
574
575        /** Window flag: special flag to let windows be shown when the screen
576         * is locked. This will let application windows take precedence over
577         * key guard or any other lock screens. Can be used with
578         * {@link #FLAG_KEEP_SCREEN_ON} to turn screen on and display windows
579         * directly before showing the key guard window.  Can be used with
580         * {@link #FLAG_DISMISS_KEYGUARD} to automatically fully dismisss
581         * non-secure keyguards.  This flag only applies to the top-most
582         * full-screen window.
583         */
584        public static final int FLAG_SHOW_WHEN_LOCKED = 0x00080000;
585
586        /** Window flag: ask that the system wallpaper be shown behind
587         * your window.  The window surface must be translucent to be able
588         * to actually see the wallpaper behind it; this flag just ensures
589         * that the wallpaper surface will be there if this window actually
590         * has translucent regions.
591         */
592        public static final int FLAG_SHOW_WALLPAPER = 0x00100000;
593
594        /** Window flag: when set as a window is being added or made
595         * visible, once the window has been shown then the system will
596         * poke the power manager's user activity (as if the user had woken
597         * up the device) to turn the screen on. */
598        public static final int FLAG_TURN_SCREEN_ON = 0x00200000;
599
600        /** Window flag: when set the window will cause the keyguard to
601         * be dismissed, only if it is not a secure lock keyguard.  Because such
602         * a keyguard is not needed for security, it will never re-appear if
603         * the user navigates to another window (in contrast to
604         * {@link #FLAG_SHOW_WHEN_LOCKED}, which will only temporarily
605         * hide both secure and non-secure keyguards but ensure they reappear
606         * when the user moves to another UI that doesn't hide them).
607         * If the keyguard is currently active and is secure (requires an
608         * unlock pattern) than the user will still need to confirm it before
609         * seeing this window, unless {@link #FLAG_SHOW_WHEN_LOCKED} has
610         * also been set.
611         */
612        public static final int FLAG_DISMISS_KEYGUARD = 0x00400000;
613
614        /** Window flag: when set the window will accept for touch events
615         * outside of its bounds to be sent to other windows that also
616         * support split touch.  When this flag is not set, the first pointer
617         * that goes down determines the window to which all subsequent touches
618         * go until all pointers go up.  When this flag is set, each pointer
619         * (not necessarily the first) that goes down determines the window
620         * to which all subsequent touches of that pointer will go until that
621         * pointer goes up thereby enabling touches with multiple pointers
622         * to be split across multiple windows.
623         *
624         * {@hide} */
625        public static final int FLAG_SPLIT_TOUCH = 0x00800000;
626
627        /**
628         * Flag for a window belonging to an activity that responds to {@link KeyEvent#KEYCODE_MENU}
629         * and therefore needs a Menu key. For devices where Menu is a physical button this flag is
630         * ignored, but on devices where the Menu key is drawn in software it may be hidden unless
631         * this flag is set.
632         *
633         * (Note that Action Bars, when available, are the preferred way to offer additional
634         * functions otherwise accessed via an options menu.)
635         *
636         * {@hide}
637         */
638        public static final int FLAG_NEEDS_MENU_KEY = 0x01000000;
639
640        /** Window flag: *sigh* The lock screen wants to continue running its
641         * animation while it is fading.  A kind-of hack to allow this.  Maybe
642         * in the future we just make this the default behavior.
643         *
644         * {@hide} */
645        public static final int FLAG_KEEP_SURFACE_WHILE_ANIMATING = 0x10000000;
646
647        /** Window flag: special flag to limit the size of the window to be
648         * original size ([320x480] x density). Used to create window for applications
649         * running under compatibility mode.
650         *
651         * {@hide} */
652        public static final int FLAG_COMPATIBLE_WINDOW = 0x20000000;
653
654        /** Window flag: a special option intended for system dialogs.  When
655         * this flag is set, the window will demand focus unconditionally when
656         * it is created.
657         * {@hide} */
658        public static final int FLAG_SYSTEM_ERROR = 0x40000000;
659
660        /**
661         * Indicates whether this window should be hardware accelerated.
662         * Requesting hardware acceleration does not guarantee it will happen.
663         */
664        public static final int FLAG_HARDWARE_ACCELERATED = 0x80000000;
665
666        /**
667         * Given a particular set of window manager flags, determine whether
668         * such a window may be a target for an input method when it has
669         * focus.  In particular, this checks the
670         * {@link #FLAG_NOT_FOCUSABLE} and {@link #FLAG_ALT_FOCUSABLE_IM}
671         * flags and returns true if the combination of the two corresponds
672         * to a window that needs to be behind the input method so that the
673         * user can type into it.
674         *
675         * @param flags The current window manager flags.
676         *
677         * @return Returns true if such a window should be behind/interact
678         * with an input method, false if not.
679         */
680        public static boolean mayUseInputMethod(int flags) {
681            switch (flags&(FLAG_NOT_FOCUSABLE|FLAG_ALT_FOCUSABLE_IM)) {
682                case 0:
683                case FLAG_NOT_FOCUSABLE|FLAG_ALT_FOCUSABLE_IM:
684                    return true;
685            }
686            return false;
687        }
688
689        /**
690         * Mask for {@link #softInputMode} of the bits that determine the
691         * desired visibility state of the soft input area for this window.
692         */
693        public static final int SOFT_INPUT_MASK_STATE = 0x0f;
694
695        /**
696         * Visibility state for {@link #softInputMode}: no state has been specified.
697         */
698        public static final int SOFT_INPUT_STATE_UNSPECIFIED = 0;
699
700        /**
701         * Visibility state for {@link #softInputMode}: please don't change the state of
702         * the soft input area.
703         */
704        public static final int SOFT_INPUT_STATE_UNCHANGED = 1;
705
706        /**
707         * Visibility state for {@link #softInputMode}: please hide any soft input
708         * area when normally appropriate (when the user is navigating
709         * forward to your window).
710         */
711        public static final int SOFT_INPUT_STATE_HIDDEN = 2;
712
713        /**
714         * Visibility state for {@link #softInputMode}: please always hide any
715         * soft input area when this window receives focus.
716         */
717        public static final int SOFT_INPUT_STATE_ALWAYS_HIDDEN = 3;
718
719        /**
720         * Visibility state for {@link #softInputMode}: please show the soft
721         * input area when normally appropriate (when the user is navigating
722         * forward to your window).
723         */
724        public static final int SOFT_INPUT_STATE_VISIBLE = 4;
725
726        /**
727         * Visibility state for {@link #softInputMode}: please always make the
728         * soft input area visible when this window receives input focus.
729         */
730        public static final int SOFT_INPUT_STATE_ALWAYS_VISIBLE = 5;
731
732        /**
733         * Mask for {@link #softInputMode} of the bits that determine the
734         * way that the window should be adjusted to accommodate the soft
735         * input window.
736         */
737        public static final int SOFT_INPUT_MASK_ADJUST = 0xf0;
738
739        /** Adjustment option for {@link #softInputMode}: nothing specified.
740         * The system will try to pick one or
741         * the other depending on the contents of the window.
742         */
743        public static final int SOFT_INPUT_ADJUST_UNSPECIFIED = 0x00;
744
745        /** Adjustment option for {@link #softInputMode}: set to allow the
746         * window to be resized when an input
747         * method is shown, so that its contents are not covered by the input
748         * method.  This can <em>not</em> be combined with
749         * {@link #SOFT_INPUT_ADJUST_PAN}; if
750         * neither of these are set, then the system will try to pick one or
751         * the other depending on the contents of the window.
752         */
753        public static final int SOFT_INPUT_ADJUST_RESIZE = 0x10;
754
755        /** Adjustment option for {@link #softInputMode}: set to have a window
756         * pan when an input method is
757         * shown, so it doesn't need to deal with resizing but just panned
758         * by the framework to ensure the current input focus is visible.  This
759         * can <em>not</em> be combined with {@link #SOFT_INPUT_ADJUST_RESIZE}; if
760         * neither of these are set, then the system will try to pick one or
761         * the other depending on the contents of the window.
762         */
763        public static final int SOFT_INPUT_ADJUST_PAN = 0x20;
764
765        /** Adjustment option for {@link #softInputMode}: set to have a window
766         * not adjust for a shown input method.  The window will not be resized,
767         * and it will not be panned to make its focus visible.
768         */
769        public static final int SOFT_INPUT_ADJUST_NOTHING = 0x30;
770
771        /**
772         * Bit for {@link #softInputMode}: set when the user has navigated
773         * forward to the window.  This is normally set automatically for
774         * you by the system, though you may want to set it in certain cases
775         * when you are displaying a window yourself.  This flag will always
776         * be cleared automatically after the window is displayed.
777         */
778        public static final int SOFT_INPUT_IS_FORWARD_NAVIGATION = 0x100;
779
780        /**
781         * Desired operating mode for any soft input area.  May any combination
782         * of:
783         *
784         * <ul>
785         * <li> One of the visibility states
786         * {@link #SOFT_INPUT_STATE_UNSPECIFIED}, {@link #SOFT_INPUT_STATE_UNCHANGED},
787         * {@link #SOFT_INPUT_STATE_HIDDEN}, {@link #SOFT_INPUT_STATE_ALWAYS_VISIBLE}, or
788         * {@link #SOFT_INPUT_STATE_VISIBLE}.
789         * <li> One of the adjustment options
790         * {@link #SOFT_INPUT_ADJUST_UNSPECIFIED},
791         * {@link #SOFT_INPUT_ADJUST_RESIZE}, or
792         * {@link #SOFT_INPUT_ADJUST_PAN}.
793         */
794        public int softInputMode;
795
796        /**
797         * Placement of window within the screen as per {@link Gravity}.  Both
798         * {@link Gravity#apply(int, int, int, android.graphics.Rect, int, int,
799         * android.graphics.Rect) Gravity.apply} and
800         * {@link Gravity#applyDisplay(int, android.graphics.Rect, android.graphics.Rect)
801         * Gravity.applyDisplay} are used during window layout, with this value
802         * given as the desired gravity.  For example you can specify
803         * {@link Gravity#DISPLAY_CLIP_HORIZONTAL Gravity.DISPLAY_CLIP_HORIZONTAL} and
804         * {@link Gravity#DISPLAY_CLIP_VERTICAL Gravity.DISPLAY_CLIP_VERTICAL} here
805         * to control the behavior of
806         * {@link Gravity#applyDisplay(int, android.graphics.Rect, android.graphics.Rect)
807         * Gravity.applyDisplay}.
808         *
809         * @see Gravity
810         */
811        public int gravity;
812
813        /**
814         * The horizontal margin, as a percentage of the container's width,
815         * between the container and the widget.  See
816         * {@link Gravity#apply(int, int, int, android.graphics.Rect, int, int,
817         * android.graphics.Rect) Gravity.apply} for how this is used.  This
818         * field is added with {@link #x} to supply the <var>xAdj</var> parameter.
819         */
820        public float horizontalMargin;
821
822        /**
823         * The vertical margin, as a percentage of the container's height,
824         * between the container and the widget.  See
825         * {@link Gravity#apply(int, int, int, android.graphics.Rect, int, int,
826         * android.graphics.Rect) Gravity.apply} for how this is used.  This
827         * field is added with {@link #y} to supply the <var>yAdj</var> parameter.
828         */
829        public float verticalMargin;
830
831        /**
832         * The desired bitmap format.  May be one of the constants in
833         * {@link android.graphics.PixelFormat}.  Default is OPAQUE.
834         */
835        public int format;
836
837        /**
838         * A style resource defining the animations to use for this window.
839         * This must be a system resource; it can not be an application resource
840         * because the window manager does not have access to applications.
841         */
842        public int windowAnimations;
843
844        /**
845         * An alpha value to apply to this entire window.
846         * An alpha of 1.0 means fully opaque and 0.0 means fully transparent
847         */
848        public float alpha = 1.0f;
849
850        /**
851         * When {@link #FLAG_DIM_BEHIND} is set, this is the amount of dimming
852         * to apply.  Range is from 1.0 for completely opaque to 0.0 for no
853         * dim.
854         */
855        public float dimAmount = 1.0f;
856
857        /**
858         * Default value for {@link #screenBrightness} and {@link #buttonBrightness}
859         * indicating that the brightness value is not overridden for this window
860         * and normal brightness policy should be used.
861         */
862        public static final float BRIGHTNESS_OVERRIDE_NONE = -1.0f;
863
864        /**
865         * Value for {@link #screenBrightness} and {@link #buttonBrightness}
866         * indicating that the screen or button backlight brightness should be set
867         * to the lowest value when this window is in front.
868         */
869        public static final float BRIGHTNESS_OVERRIDE_OFF = 0.0f;
870
871        /**
872         * Value for {@link #screenBrightness} and {@link #buttonBrightness}
873         * indicating that the screen or button backlight brightness should be set
874         * to the hightest value when this window is in front.
875         */
876        public static final float BRIGHTNESS_OVERRIDE_FULL = 1.0f;
877
878        /**
879         * This can be used to override the user's preferred brightness of
880         * the screen.  A value of less than 0, the default, means to use the
881         * preferred screen brightness.  0 to 1 adjusts the brightness from
882         * dark to full bright.
883         */
884        public float screenBrightness = BRIGHTNESS_OVERRIDE_NONE;
885
886        /**
887         * This can be used to override the standard behavior of the button and
888         * keyboard backlights.  A value of less than 0, the default, means to
889         * use the standard backlight behavior.  0 to 1 adjusts the brightness
890         * from dark to full bright.
891         */
892        public float buttonBrightness = BRIGHTNESS_OVERRIDE_NONE;
893
894        /**
895         * Identifier for this window.  This will usually be filled in for
896         * you.
897         */
898        public IBinder token = null;
899
900        /**
901         * Name of the package owning this window.
902         */
903        public String packageName = null;
904
905        /**
906         * Specific orientation value for a window.
907         * May be any of the same values allowed
908         * for {@link android.content.pm.ActivityInfo#screenOrientation}.
909         * If not set, a default value of
910         * {@link android.content.pm.ActivityInfo#SCREEN_ORIENTATION_UNSPECIFIED}
911         * will be used.
912         */
913        public int screenOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
914
915
916        public LayoutParams() {
917            super(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
918            type = TYPE_APPLICATION;
919            format = PixelFormat.OPAQUE;
920        }
921
922        public LayoutParams(int _type) {
923            super(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
924            type = _type;
925            format = PixelFormat.OPAQUE;
926        }
927
928        public LayoutParams(int _type, int _flags) {
929            super(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
930            type = _type;
931            flags = _flags;
932            format = PixelFormat.OPAQUE;
933        }
934
935        public LayoutParams(int _type, int _flags, int _format) {
936            super(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
937            type = _type;
938            flags = _flags;
939            format = _format;
940        }
941
942        public LayoutParams(int w, int h, int _type, int _flags, int _format) {
943            super(w, h);
944            type = _type;
945            flags = _flags;
946            format = _format;
947        }
948
949        public LayoutParams(int w, int h, int xpos, int ypos, int _type,
950                int _flags, int _format) {
951            super(w, h);
952            x = xpos;
953            y = ypos;
954            type = _type;
955            flags = _flags;
956            format = _format;
957        }
958
959        public final void setTitle(CharSequence title) {
960            if (null == title)
961                title = "";
962
963            mTitle = TextUtils.stringOrSpannedString(title);
964        }
965
966        public final CharSequence getTitle() {
967            return mTitle;
968        }
969
970        public int describeContents() {
971            return 0;
972        }
973
974        public void writeToParcel(Parcel out, int parcelableFlags) {
975            out.writeInt(width);
976            out.writeInt(height);
977            out.writeInt(x);
978            out.writeInt(y);
979            out.writeInt(type);
980            out.writeInt(memoryType);
981            out.writeInt(flags);
982            out.writeInt(softInputMode);
983            out.writeInt(gravity);
984            out.writeFloat(horizontalMargin);
985            out.writeFloat(verticalMargin);
986            out.writeInt(format);
987            out.writeInt(windowAnimations);
988            out.writeFloat(alpha);
989            out.writeFloat(dimAmount);
990            out.writeFloat(screenBrightness);
991            out.writeFloat(buttonBrightness);
992            out.writeStrongBinder(token);
993            out.writeString(packageName);
994            TextUtils.writeToParcel(mTitle, out, parcelableFlags);
995            out.writeInt(screenOrientation);
996        }
997
998        public static final Parcelable.Creator<LayoutParams> CREATOR
999                    = new Parcelable.Creator<LayoutParams>() {
1000            public LayoutParams createFromParcel(Parcel in) {
1001                return new LayoutParams(in);
1002            }
1003
1004            public LayoutParams[] newArray(int size) {
1005                return new LayoutParams[size];
1006            }
1007        };
1008
1009
1010        public LayoutParams(Parcel in) {
1011            width = in.readInt();
1012            height = in.readInt();
1013            x = in.readInt();
1014            y = in.readInt();
1015            type = in.readInt();
1016            memoryType = in.readInt();
1017            flags = in.readInt();
1018            softInputMode = in.readInt();
1019            gravity = in.readInt();
1020            horizontalMargin = in.readFloat();
1021            verticalMargin = in.readFloat();
1022            format = in.readInt();
1023            windowAnimations = in.readInt();
1024            alpha = in.readFloat();
1025            dimAmount = in.readFloat();
1026            screenBrightness = in.readFloat();
1027            buttonBrightness = in.readFloat();
1028            token = in.readStrongBinder();
1029            packageName = in.readString();
1030            mTitle = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in);
1031            screenOrientation = in.readInt();
1032        }
1033
1034        @SuppressWarnings({"PointlessBitwiseExpression"})
1035        public static final int LAYOUT_CHANGED = 1<<0;
1036        public static final int TYPE_CHANGED = 1<<1;
1037        public static final int FLAGS_CHANGED = 1<<2;
1038        public static final int FORMAT_CHANGED = 1<<3;
1039        public static final int ANIMATION_CHANGED = 1<<4;
1040        public static final int DIM_AMOUNT_CHANGED = 1<<5;
1041        public static final int TITLE_CHANGED = 1<<6;
1042        public static final int ALPHA_CHANGED = 1<<7;
1043        public static final int MEMORY_TYPE_CHANGED = 1<<8;
1044        public static final int SOFT_INPUT_MODE_CHANGED = 1<<9;
1045        public static final int SCREEN_ORIENTATION_CHANGED = 1<<10;
1046        public static final int SCREEN_BRIGHTNESS_CHANGED = 1<<11;
1047        /** {@hide} */
1048        public static final int BUTTON_BRIGHTNESS_CHANGED = 1<<12;
1049
1050        // internal buffer to backup/restore parameters under compatibility mode.
1051        private int[] mCompatibilityParamsBackup = null;
1052
1053        public final int copyFrom(LayoutParams o) {
1054            int changes = 0;
1055
1056            if (width != o.width) {
1057                width = o.width;
1058                changes |= LAYOUT_CHANGED;
1059            }
1060            if (height != o.height) {
1061                height = o.height;
1062                changes |= LAYOUT_CHANGED;
1063            }
1064            if (x != o.x) {
1065                x = o.x;
1066                changes |= LAYOUT_CHANGED;
1067            }
1068            if (y != o.y) {
1069                y = o.y;
1070                changes |= LAYOUT_CHANGED;
1071            }
1072            if (horizontalWeight != o.horizontalWeight) {
1073                horizontalWeight = o.horizontalWeight;
1074                changes |= LAYOUT_CHANGED;
1075            }
1076            if (verticalWeight != o.verticalWeight) {
1077                verticalWeight = o.verticalWeight;
1078                changes |= LAYOUT_CHANGED;
1079            }
1080            if (horizontalMargin != o.horizontalMargin) {
1081                horizontalMargin = o.horizontalMargin;
1082                changes |= LAYOUT_CHANGED;
1083            }
1084            if (verticalMargin != o.verticalMargin) {
1085                verticalMargin = o.verticalMargin;
1086                changes |= LAYOUT_CHANGED;
1087            }
1088            if (type != o.type) {
1089                type = o.type;
1090                changes |= TYPE_CHANGED;
1091            }
1092            if (memoryType != o.memoryType) {
1093                memoryType = o.memoryType;
1094                changes |= MEMORY_TYPE_CHANGED;
1095            }
1096            if (flags != o.flags) {
1097                flags = o.flags;
1098                changes |= FLAGS_CHANGED;
1099            }
1100            if (softInputMode != o.softInputMode) {
1101                softInputMode = o.softInputMode;
1102                changes |= SOFT_INPUT_MODE_CHANGED;
1103            }
1104            if (gravity != o.gravity) {
1105                gravity = o.gravity;
1106                changes |= LAYOUT_CHANGED;
1107            }
1108            if (horizontalMargin != o.horizontalMargin) {
1109                horizontalMargin = o.horizontalMargin;
1110                changes |= LAYOUT_CHANGED;
1111            }
1112            if (verticalMargin != o.verticalMargin) {
1113                verticalMargin = o.verticalMargin;
1114                changes |= LAYOUT_CHANGED;
1115            }
1116            if (format != o.format) {
1117                format = o.format;
1118                changes |= FORMAT_CHANGED;
1119            }
1120            if (windowAnimations != o.windowAnimations) {
1121                windowAnimations = o.windowAnimations;
1122                changes |= ANIMATION_CHANGED;
1123            }
1124            if (token == null) {
1125                // NOTE: token only copied if the recipient doesn't
1126                // already have one.
1127                token = o.token;
1128            }
1129            if (packageName == null) {
1130                // NOTE: packageName only copied if the recipient doesn't
1131                // already have one.
1132                packageName = o.packageName;
1133            }
1134            if (!mTitle.equals(o.mTitle)) {
1135                mTitle = o.mTitle;
1136                changes |= TITLE_CHANGED;
1137            }
1138            if (alpha != o.alpha) {
1139                alpha = o.alpha;
1140                changes |= ALPHA_CHANGED;
1141            }
1142            if (dimAmount != o.dimAmount) {
1143                dimAmount = o.dimAmount;
1144                changes |= DIM_AMOUNT_CHANGED;
1145            }
1146            if (screenBrightness != o.screenBrightness) {
1147                screenBrightness = o.screenBrightness;
1148                changes |= SCREEN_BRIGHTNESS_CHANGED;
1149            }
1150            if (buttonBrightness != o.buttonBrightness) {
1151                buttonBrightness = o.buttonBrightness;
1152                changes |= BUTTON_BRIGHTNESS_CHANGED;
1153            }
1154
1155            if (screenOrientation != o.screenOrientation) {
1156                screenOrientation = o.screenOrientation;
1157                changes |= SCREEN_ORIENTATION_CHANGED;
1158            }
1159
1160            return changes;
1161        }
1162
1163        @Override
1164        public String debug(String output) {
1165            output += "Contents of " + this + ":";
1166            Log.d("Debug", output);
1167            output = super.debug("");
1168            Log.d("Debug", output);
1169            Log.d("Debug", "");
1170            Log.d("Debug", "WindowManager.LayoutParams={title=" + mTitle + "}");
1171            return "";
1172        }
1173
1174        @Override
1175        public String toString() {
1176            StringBuilder sb = new StringBuilder(256);
1177            sb.append("WM.LayoutParams{");
1178            sb.append("(");
1179            sb.append(x);
1180            sb.append(',');
1181            sb.append(y);
1182            sb.append(")(");
1183            sb.append((width== MATCH_PARENT ?"fill":(width==WRAP_CONTENT?"wrap":width)));
1184            sb.append('x');
1185            sb.append((height== MATCH_PARENT ?"fill":(height==WRAP_CONTENT?"wrap":height)));
1186            sb.append(")");
1187            if (horizontalMargin != 0) {
1188                sb.append(" hm=");
1189                sb.append(horizontalMargin);
1190            }
1191            if (verticalMargin != 0) {
1192                sb.append(" vm=");
1193                sb.append(verticalMargin);
1194            }
1195            if (gravity != 0) {
1196                sb.append(" gr=#");
1197                sb.append(Integer.toHexString(gravity));
1198            }
1199            if (softInputMode != 0) {
1200                sb.append(" sim=#");
1201                sb.append(Integer.toHexString(softInputMode));
1202            }
1203            sb.append(" ty=");
1204            sb.append(type);
1205            sb.append(" fl=#");
1206            sb.append(Integer.toHexString(flags));
1207            sb.append(" fmt=");
1208            sb.append(format);
1209            if (windowAnimations != 0) {
1210                sb.append(" wanim=0x");
1211                sb.append(Integer.toHexString(windowAnimations));
1212            }
1213            if (screenOrientation != ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED) {
1214                sb.append(" or=");
1215                sb.append(screenOrientation);
1216            }
1217            if (alpha != 1.0f) {
1218                sb.append(" alpha=");
1219                sb.append(alpha);
1220            }
1221            if (screenBrightness != BRIGHTNESS_OVERRIDE_NONE) {
1222                sb.append(" sbrt=");
1223                sb.append(screenBrightness);
1224            }
1225            if (buttonBrightness != BRIGHTNESS_OVERRIDE_NONE) {
1226                sb.append(" bbrt=");
1227                sb.append(buttonBrightness);
1228            }
1229            if ((flags & FLAG_COMPATIBLE_WINDOW) != 0) {
1230                sb.append(" compatible=true");
1231            }
1232            sb.append('}');
1233            return sb.toString();
1234        }
1235
1236        /**
1237         * Scale the layout params' coordinates and size.
1238         * @hide
1239         */
1240        public void scale(float scale) {
1241            x = (int) (x * scale + 0.5f);
1242            y = (int) (y * scale + 0.5f);
1243            if (width > 0) {
1244                width = (int) (width * scale + 0.5f);
1245            }
1246            if (height > 0) {
1247                height = (int) (height * scale + 0.5f);
1248            }
1249        }
1250
1251        /**
1252         * Backup the layout parameters used in compatibility mode.
1253         * @see LayoutParams#restore()
1254         */
1255        void backup() {
1256            int[] backup = mCompatibilityParamsBackup;
1257            if (backup == null) {
1258                // we backup 4 elements, x, y, width, height
1259                backup = mCompatibilityParamsBackup = new int[4];
1260            }
1261            backup[0] = x;
1262            backup[1] = y;
1263            backup[2] = width;
1264            backup[3] = height;
1265        }
1266
1267        /**
1268         * Restore the layout params' coordinates, size and gravity
1269         * @see LayoutParams#backup()
1270         */
1271        void restore() {
1272            int[] backup = mCompatibilityParamsBackup;
1273            if (backup != null) {
1274                x = backup[0];
1275                y = backup[1];
1276                width = backup[2];
1277                height = backup[3];
1278            }
1279        }
1280
1281        private CharSequence mTitle = "";
1282    }
1283}
1284