aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/include/inputstr.h
blob: 5aae1b5128592afc661b80c2670b062824d98471 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
/************************************************************

Copyright 1987, 1998  The Open Group

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.


Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

                        All Rights Reserved

Permission to use, copy, modify, and distribute this software and its 
documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in 
supporting documentation, and that the name of Digital not be
used in advertising or publicity pertaining to distribution of the
software without specific, written prior permission.  

DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.

********************************************************/


#ifndef INPUTSTRUCT_H
#define INPUTSTRUCT_H

#include <pixman.h>
#include "input.h"
#include "window.h"
#include "dixstruct.h"
#include "cursorstr.h"
#include "geext.h"
#include "privates.h"

#define BitIsOn(ptr, bit) (!!(((const BYTE *) (ptr))[(bit)>>3] & (1 << ((bit) & 7))))
#define SetBit(ptr, bit)  (((BYTE *) (ptr))[(bit)>>3] |= (1 << ((bit) & 7)))
#define ClearBit(ptr, bit) (((BYTE *)(ptr))[(bit)>>3] &= ~(1 << ((bit) & 7)))
extern _X_EXPORT int CountBits(const uint8_t *mask, int len);

#define SameClient(obj,client) \
	(CLIENT_BITS((obj)->resource) == (client)->clientAsMask)

#define EMASKSIZE	MAXDEVICES + 2

/* This is the last XI2 event supported by the server. If you add
 * events to the protocol, the server will not support these events until
 * this number here is bumped.
 */
#define XI2LASTEVENT    17 /* XI_RawMotion */
#define XI2MASKSIZE     ((XI2LASTEVENT >> 3) + 1) /* no of bytes for masks */

/**
 * Scroll types for ::SetScrollValuator and the scroll type in the
 * ::ScrollInfoPtr.
 */
enum ScrollType {
    SCROLL_TYPE_NONE = 0,           /**< Not a scrolling valuator */
    SCROLL_TYPE_VERTICAL = 8,
    SCROLL_TYPE_HORIZONTAL = 9,
};

/**
 * This struct stores the core event mask for each client except the client
 * that created the window.
 *
 * Each window that has events selected from other clients has at least one of
 * these masks. If multiple clients selected for events on the same window,
 * these masks are in a linked list.
 *
 * The event mask for the client that created the window is stored in
 * win->eventMask instead.
 *
 * The resource id is simply a fake client ID to associate this mask with a
 * client.
 *
 * Kludge: OtherClients and InputClients must be compatible, see code.
 */
typedef struct _OtherClients {
    OtherClientsPtr	next; /**< Pointer to the next mask */
    XID			resource; /**< id for putting into resource manager */
    Mask		mask; /**< Core event mask */
} OtherClients;

/**
 * This struct stores the XI event mask for each client.
 *
 * Each window that has events selected has at least one of these masks. If
 * multiple client selected for events on the same window, these masks are in
 * a linked list.
 */
typedef struct _InputClients {
    InputClientsPtr	next; /**< Pointer to the next mask */
    XID			resource; /**< id for putting into resource manager */
    Mask		mask[EMASKSIZE]; /**< Actual XI event mask, deviceid is index */
    /** XI2 event masks. One per device, each bit is a mask of (1 << type) */
    struct _XI2Mask     *xi2mask;
} InputClients;

/**
 * Combined XI event masks from all devices.
 *
 * This is the XI equivalent of the deliverableEvents, eventMask and
 * dontPropagate mask of the WindowRec (or WindowOptRec).
 *
 * A window that has an XI client selecting for events has exactly one
 * OtherInputMasks struct and exactly one InputClients struct hanging off
 * inputClients. Each further client appends to the inputClients list.
 * Each Mask field is per-device, with the device id as the index.
 * Exception: for non-device events (Presence events), the MAXDEVICES
 * deviceid is used.
 */
typedef struct _OtherInputMasks {
    /**
     * Bitwise OR of all masks by all clients and the window's parent's masks.
     */
    Mask		deliverableEvents[EMASKSIZE];
    /**
     * Bitwise OR of all masks by all clients on this window.
     */
    Mask		inputEvents[EMASKSIZE];
    /** The do-not-propagate masks for each device. */
    Mask		dontPropagateMask[EMASKSIZE];
    /** The clients that selected for events */
    InputClientsPtr	inputClients;
    /* XI2 event masks. One per device, each bit is a mask of (1 << type) */
    struct _XI2Mask     *xi2mask;
} OtherInputMasks;

/*
 * The following structure gets used for both active and passive grabs. For
 * active grabs some of the fields (e.g. modifiers) are not used. However,
 * that is not much waste since there aren't many active grabs (one per
 * keyboard/pointer device) going at once in the server.
 */

#define MasksPerDetailMask 8		/* 256 keycodes and 256 possible
                                           modifier combinations, but only	
                                           3 buttons. */

typedef struct _DetailRec {		/* Grab details may be bit masks */
    unsigned int        exact;
    Mask                *pMask;
} DetailRec;

union _GrabMask {
    Mask core;
    Mask xi;
    struct _XI2Mask *xi2mask;
};

/**
 * Central struct for device grabs. 
 * The same struct is used for both core grabs and device grabs, with
 * different fields being set. 
 * If the grab is a core grab (GrabPointer/GrabKeyboard), then the eventMask
 * is a combination of standard event masks (i.e. PointerMotionMask |
 * ButtonPressMask).
 * If the grab is a device grab (GrabDevice), then the eventMask is a
 * combination of event masks for a given XI event type (see SetEventInfo).
 *
 * If the grab is a result of a ButtonPress, then eventMask is the core mask
 * and deviceMask is set to the XI event mask for the grab.
 */
typedef struct _GrabRec {
    GrabPtr		next;		/* for chain of passive grabs */
    XID			resource;
    DeviceIntPtr	device;
    WindowPtr		window;
    unsigned		ownerEvents:1;
    unsigned		keyboardMode:1;
    unsigned		pointerMode:1;
    enum InputLevel	grabtype;
    CARD8		type;		/* event type */
    DetailRec		modifiersDetail;
    DeviceIntPtr	modifierDevice;
    DetailRec		detail;		/* key or button */
    WindowPtr		confineTo;	/* always NULL for keyboards */
    CursorPtr		cursor;		/* always NULL for keyboards */
    Mask		eventMask;
    Mask                deviceMask;     
    /* XI2 event masks. One per device, each bit is a mask of (1 << type) */
    struct _XI2Mask *xi2mask;
} GrabRec;

/**
 * Sprite information for a device.
 */
typedef struct _SpriteRec {
    CursorPtr	current;
    BoxRec	hotLimits;	/* logical constraints of hot spot */
    Bool	confined;	/* confined to screen */
    RegionPtr	hotShape;	/* additional logical shape constraint */
    BoxRec	physLimits;	/* physical constraints of hot spot */
    WindowPtr	win;		/* window of logical position */
    HotSpot	hot;		/* logical pointer position */
    HotSpot	hotPhys;	/* physical pointer position */
#ifdef PANORAMIX
    ScreenPtr	screen;		/* all others are in Screen 0 coordinates */
    RegionRec   Reg1;	        /* Region 1 for confining motion */
    RegionRec   Reg2;		/* Region 2 for confining virtual motion */
    WindowPtr   windows[MAXSCREENS];
    WindowPtr	confineWin;	/* confine window */
#endif
    /* The window trace information is used at dix/events.c to avoid having
     * to compute all the windows between the root and the current pointer
     * window each time a button or key goes down. The grabs on each of those
     * windows must be checked.
     * spriteTraces should only be used at dix/events.c! */
    WindowPtr *spriteTrace;
    int spriteTraceSize;
    int spriteTraceGood;

    /* Due to delays between event generation and event processing, it is
     * possible that the pointer has crossed screen boundaries between the
     * time in which it begins generating events and the time when
     * those events are processed.
     *
     * pEnqueueScreen: screen the pointer was on when the event was generated
     * pDequeueScreen: screen the pointer was on when the event is processed
     */
    ScreenPtr pEnqueueScreen;
    ScreenPtr pDequeueScreen;

} SpriteRec;

typedef struct _KeyClassRec {
    int			sourceid;
    CARD8		down[DOWN_LENGTH];
    CARD8		postdown[DOWN_LENGTH];
    int                 modifierKeyCount[8];
    struct _XkbSrvInfo *xkbInfo;
} KeyClassRec, *KeyClassPtr;

typedef struct _ScrollInfo {
    enum ScrollType	type;
    double		increment;
    int			flags;
} ScrollInfo, *ScrollInfoPtr;

typedef struct _AxisInfo {
    int		resolution;
    int		min_resolution;
    int		max_resolution;
    int		min_value;
    int		max_value;
    Atom	label;
    CARD8	mode;
    ScrollInfo  scroll;
} AxisInfo, *AxisInfoPtr;

typedef struct _ValuatorAccelerationRec {
    int                         number;
    PointerAccelSchemeProc      AccelSchemeProc;
    void                       *accelData; /* at disposal of AccelScheme */
    PointerAccelSchemeInitProc  AccelInitProc;
    DeviceCallbackProc          AccelCleanupProc;
} ValuatorAccelerationRec, *ValuatorAccelerationPtr;

typedef struct _ValuatorClassRec {
    int                   sourceid;
    int		 	  numMotionEvents;
    int                   first_motion;
    int                   last_motion;
    void                  *motion; /* motion history buffer. Different layout
                                      for MDs and SDs!*/
    WindowPtr             motionHintWindow;

    AxisInfoPtr 	  axes;
    unsigned short	  numAxes;
    double		  *axisVal; /* always absolute, but device-coord system */
    ValuatorAccelerationRec	accelScheme;
    int                   h_scroll_axis; /* horiz smooth-scrolling axis */
    int                   v_scroll_axis; /* vert smooth-scrolling axis */
} ValuatorClassRec;

typedef struct _ButtonClassRec {
    int			sourceid;
    CARD8		numButtons;
    CARD8		buttonsDown;	/* number of buttons currently down
                                           This counts logical buttons, not
					   physical ones, i.e if some buttons
					   are mapped to 0, they're not counted
					   here */
    unsigned short	state;
    Mask		motionMask;
    CARD8		down[DOWN_LENGTH];
    CARD8		postdown[DOWN_LENGTH];
    CARD8		map[MAP_LENGTH];
    union _XkbAction    *xkb_acts;
    Atom		labels[MAX_BUTTONS];
} ButtonClassRec, *ButtonClassPtr;

typedef struct _FocusClassRec {
    int		sourceid;
    WindowPtr	win; /* May be set to a int constant (e.g. PointerRootWin)! */
    int		revert;
    TimeStamp	time;
    WindowPtr	*trace;
    int		traceSize;
    int		traceGood;
} FocusClassRec, *FocusClassPtr;

typedef struct _ProximityClassRec {
    int		sourceid;
    char	in_proximity;
} ProximityClassRec, *ProximityClassPtr;

typedef struct _KbdFeedbackClassRec *KbdFeedbackPtr;
typedef struct _PtrFeedbackClassRec *PtrFeedbackPtr;
typedef struct _IntegerFeedbackClassRec *IntegerFeedbackPtr;
typedef struct _StringFeedbackClassRec *StringFeedbackPtr;
typedef struct _BellFeedbackClassRec *BellFeedbackPtr;
typedef struct _LedFeedbackClassRec *LedFeedbackPtr;

typedef struct _KbdFeedbackClassRec {
    BellProcPtr		BellProc;
    KbdCtrlProcPtr	CtrlProc;
    KeybdCtrl	 	ctrl;
    KbdFeedbackPtr	next;
    struct _XkbSrvLedInfo *xkb_sli;
} KbdFeedbackClassRec;

typedef struct _PtrFeedbackClassRec {
    PtrCtrlProcPtr	CtrlProc;
    PtrCtrl		ctrl;
    PtrFeedbackPtr	next;
} PtrFeedbackClassRec;

typedef struct _IntegerFeedbackClassRec {
    IntegerCtrlProcPtr	CtrlProc;
    IntegerCtrl	 	ctrl;
    IntegerFeedbackPtr	next;
} IntegerFeedbackClassRec;

typedef struct _StringFeedbackClassRec {
    StringCtrlProcPtr	CtrlProc;
    StringCtrl	 	ctrl;
    StringFeedbackPtr	next;
} StringFeedbackClassRec;

typedef struct _BellFeedbackClassRec {
    BellProcPtr		BellProc;
    BellCtrlProcPtr	CtrlProc;
    BellCtrl	 	ctrl;
    BellFeedbackPtr	next;
} BellFeedbackClassRec;

typedef struct _LedFeedbackClassRec {
    LedCtrlProcPtr	CtrlProc;
    LedCtrl	 	ctrl;
    LedFeedbackPtr	next;
    struct _XkbSrvLedInfo *xkb_sli;
} LedFeedbackClassRec;


typedef struct _ClassesRec {
    KeyClassPtr		key;
    ValuatorClassPtr	valuator;
    ButtonClassPtr	button;
    FocusClassPtr	focus;
    ProximityClassPtr	proximity;
    KbdFeedbackPtr	kbdfeed;
    PtrFeedbackPtr	ptrfeed;
    IntegerFeedbackPtr	intfeed;
    StringFeedbackPtr	stringfeed;
    BellFeedbackPtr	bell;
    LedFeedbackPtr	leds;
} ClassesRec;


/* Device properties */
typedef struct _XIPropertyValue
{
    Atom                type;           /* ignored by server */
    short               format;         /* format of data for swapping - 8,16,32 */
    long                size;           /* size of data in (format/8) bytes */
    pointer             data;           /* private to client */
} XIPropertyValueRec;

typedef struct _XIProperty
{
    struct _XIProperty   *next;
    Atom                  propertyName;
    BOOL                  deletable;    /* clients can delete this prop? */
    XIPropertyValueRec    value;
} XIPropertyRec;

typedef XIPropertyRec      *XIPropertyPtr;
typedef XIPropertyValueRec *XIPropertyValuePtr;


typedef struct _XIPropertyHandler
{
    struct _XIPropertyHandler* next;
    long id;
    int (*SetProperty) (DeviceIntPtr dev,
                        Atom property,
                        XIPropertyValuePtr prop,
                        BOOL checkonly);
    int (*GetProperty) (DeviceIntPtr dev,
                        Atom property);
    int (*DeleteProperty) (DeviceIntPtr dev,
                           Atom property);
} XIPropertyHandler, *XIPropertyHandlerPtr;

/* states for devices */

#define NOT_GRABBED		0
#define THAWED			1
#define THAWED_BOTH		2	/* not a real state */
#define FREEZE_NEXT_EVENT	3
#define FREEZE_BOTH_NEXT_EVENT	4
#define FROZEN			5	/* any state >= has device frozen */
#define FROZEN_NO_EVENT		5
#define FROZEN_WITH_EVENT	6
#define THAW_OTHERS		7


typedef struct _GrabInfoRec {
    TimeStamp	    grabTime;
    Bool            fromPassiveGrab;    /* true if from passive grab */
    Bool            implicitGrab;       /* implicit from ButtonPress */
    GrabPtr         activeGrab;
    GrabPtr         grab;
    CARD8           activatingKey;
    void	    (*ActivateGrab) (
                    DeviceIntPtr /*device*/,
                    GrabPtr /*grab*/,
                    TimeStamp /*time*/,
                    Bool /*autoGrab*/);
    void	    (*DeactivateGrab)(
                    DeviceIntPtr /*device*/);
    struct {
	Bool		frozen;
	int		state;
	GrabPtr		other;		/* if other grab has this frozen */
	DeviceEvent	*event;		/* saved to be replayed */
    } sync;
} GrabInfoRec, *GrabInfoPtr;

typedef struct _SpriteInfoRec {
    /* sprite must always point to a valid sprite. For devices sharing the
     * sprite, let sprite point to a paired spriteOwner's sprite. */
    SpritePtr           sprite;      /* sprite information */
    Bool                spriteOwner; /* True if device owns the sprite */
    DeviceIntPtr        paired;      /* The paired device. Keyboard if
                                        spriteOwner is TRUE, otherwise the
                                        pointer that owns the sprite. */ 

    /* keep states for animated cursor */
    struct {
        CursorPtr       pCursor;
        ScreenPtr       pScreen;
        int             elt;
        CARD32          time;
    } anim;
} SpriteInfoRec, *SpriteInfoPtr;

/* device types */
#define MASTER_POINTER          1
#define MASTER_KEYBOARD         2
#define SLAVE                   3
/* special types for GetMaster */
#define MASTER_ATTACHED         4       /* Master for this device */
#define KEYBOARD_OR_FLOAT       5       /* Keyboard master for this device or this device if floating */
#define POINTER_OR_FLOAT        6       /* Pointer master for this device or this device if floating */

typedef struct _DeviceIntRec {
    DeviceRec	public;
    DeviceIntPtr next;
    Bool	startup;		/* true if needs to be turned on at
				          server intialization time */
    DeviceProc	deviceProc;		/* proc(DevicePtr, DEVICE_xx). It is
					  used to initialize, turn on, or
					  turn off the device */
    Bool	inited;			/* TRUE if INIT returns Success */
    Bool        enabled;                /* TRUE if ON returns Success */
    Bool        coreEvents;             /* TRUE if device also sends core */
    GrabInfoRec deviceGrab;             /* grab on the device */
    int         type;                   /* MASTER_POINTER, MASTER_KEYBOARD, SLAVE */
    Atom		xinput_type;
    char		*name;
    int			id;
    KeyClassPtr		key;
    ValuatorClassPtr	valuator;
    ButtonClassPtr	button;
    FocusClassPtr	focus;
    ProximityClassPtr	proximity;
    KbdFeedbackPtr	kbdfeed;
    PtrFeedbackPtr	ptrfeed;
    IntegerFeedbackPtr	intfeed;
    StringFeedbackPtr	stringfeed;
    BellFeedbackPtr	bell;
    LedFeedbackPtr	leds;
    struct _XkbInterest *xkb_interest;
    char                *config_info; /* used by the hotplug layer */
    ClassesPtr		unused_classes; /* for master devices */
    int			saved_master_id;	/* for slaves while grabbed */
    PrivateRec		*devPrivates;
    DeviceUnwrapProc    unwrapProc;
    SpriteInfoPtr       spriteInfo;
    DeviceIntPtr        master;     /* master device */
    DeviceIntPtr        lastSlave;  /* last slave device used */

    /* last valuator values recorded, not posted to client;
     * for slave devices, valuators is in device coordinates, mapped to the
     * desktop
     * for master devices, valuators is in desktop coordinates.
     * see dix/getevents.c
     * remainder supports acceleration
     */
    struct {
        double          valuators[MAX_VALUATORS];
        int             numValuators;
        DeviceIntPtr    slave;
        ValuatorMask    *scroll;
    } last;

    /* Input device property handling. */
    struct {
        XIPropertyPtr   properties;
        XIPropertyHandlerPtr handlers; /* NULL-terminated */
    } properties;

    /* coordinate transformation matrix for absolute input devices */
    struct pixman_f_transform transform;

    /* XTest related master device id */
    int xtest_master_id;
} DeviceIntRec;

typedef struct {
    int			numDevices;	/* total number of devices */
    DeviceIntPtr	devices;	/* all devices turned on */
    DeviceIntPtr	off_devices;	/* all devices turned off */
    DeviceIntPtr	keyboard;	/* the main one for the server */
    DeviceIntPtr	pointer;
    DeviceIntPtr	all_devices;
    DeviceIntPtr	all_master_devices;
} InputInfo;

extern _X_EXPORT InputInfo inputInfo;

/* for keeping the events for devices grabbed synchronously */
typedef struct _QdEvent *QdEventPtr;
typedef struct _QdEvent {
    struct list		next;
    DeviceIntPtr	device;
    ScreenPtr		pScreen;	/* what screen the pointer was on */
    unsigned long	months;		/* milliseconds is in the event */
    InternalEvent	*event;
} QdEventRec;

/**
 * syncEvents is the global structure for queued events.
 *
 * Devices can be frozen through GrabModeSync pointer grabs. If this is the
 * case, events from these devices are added to "pending" instead of being
 * processed normally. When the device is unfrozen, events in "pending" are
 * replayed and processed as if they would come from the device directly.
 */
typedef struct _EventSyncInfo {
    struct list         pending;

    /** The device to replay events for. Only set in AllowEvents(), in which
     * case it is set to the device specified in the request. */
    DeviceIntPtr        replayDev;      /* kludgy rock to put flag for */

    /**
     * The window the events are supposed to be replayed on.
     * This window may be set to the grab's window (but only when
     * Replay{Pointer|Keyboard} is given in the XAllowEvents()
     * request. */
    WindowPtr           replayWin;      /*   ComputeFreezes            */
    /**
     * Flag to indicate whether we're in the process of
     * replaying events. Only set in ComputeFreezes(). */
    Bool                playingEvents;
    TimeStamp           time;
} EventSyncInfoRec, *EventSyncInfoPtr;

extern EventSyncInfoRec syncEvents;

/**
 * Given a sprite, returns the window at the bottom of the trace (i.e. the
 * furthest window from the root).
 */
static inline WindowPtr DeepestSpriteWin(SpritePtr sprite)
{
    assert(sprite->spriteTraceGood > 0);
    return sprite->spriteTrace[sprite->spriteTraceGood - 1];
}

struct _XI2Mask {
    unsigned char **masks;      /* event mask in masks[deviceid][event type byte] */
    size_t nmasks;              /* number of masks */
    size_t mask_size;           /* size of each mask in bytes */
};

#endif /* INPUTSTRUCT_H */