aboutsummaryrefslogtreecommitdiff
path: root/xorg-server/dix/eventconvert.c
blob: 760729beb13a3e3aa41ac79eedc932e044a055b4 (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
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
/*
 * Copyright © 2009 Red Hat, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
 *
 */

/**
 * @file eventconvert.c
 * This file contains event conversion routines from InternalEvent to the
 * matching protocol events.
 */

#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif

#include <stdint.h>
#include <X11/X.h>
#include <X11/extensions/XIproto.h>
#include <X11/extensions/XI2proto.h>
#include <X11/extensions/XI.h>
#include <X11/extensions/XI2.h>

#include "dix.h"
#include "inputstr.h"
#include "misc.h"
#include "eventstr.h"
#include "exglobals.h"
#include "eventconvert.h"
#include "xiquerydevice.h"
#include "xkbsrv.h"


static int countValuators(DeviceEvent *ev, int *first);
static int getValuatorEvents(DeviceEvent *ev, deviceValuator *xv);
static int eventToKeyButtonPointer(DeviceEvent *ev, xEvent **xi, int *count);
static int eventToDeviceChanged(DeviceChangedEvent *ev, xEvent **dcce);
static int eventToDeviceEvent(DeviceEvent *ev, xEvent **xi);
static int eventToRawEvent(RawDeviceEvent *ev, xEvent **xi);

/* Do not use, read comments below */
BOOL EventIsKeyRepeat(xEvent *event);

/**
 * Hack to allow detectable autorepeat for core and XI1 events.
 * The sequence number is unused until we send to the client and can be
 * misused to store data. More or less, anyway.
 *
 * Do not use this. It may change any time without warning, eat your babies
 * and piss on your cat.
 */
static void
EventSetKeyRepeatFlag(xEvent *event, BOOL on)
{
    event->u.u.sequenceNumber = on;
}

/**
 * Check if the event was marked as a repeat event before.
 * NOTE: This is a nasty hack and should NOT be used by anyone else but
 * TryClientEvents.
 */
BOOL
EventIsKeyRepeat(xEvent *event)
{
    return !!event->u.u.sequenceNumber;
}

/**
 * Convert the given event to the respective core event.
 *
 * Return values:
 * Success ... core contains the matching core event.
 * BadValue .. One or more values in the internal event are invalid.
 * BadMatch .. The event has no core equivalent.
 *
 * @param[in] event The event to convert into a core event.
 * @param[in] core The memory location to store the core event at.
 * @return Success or the matching error code.
 */
int
EventToCore(InternalEvent *event, xEvent **core_out, int *count_out)
{
    xEvent *core = NULL;
    int count = 0;
    int ret = BadImplementation;

    switch(event->any.type)
    {
        case ET_Motion:
            {
                DeviceEvent *e = &event->device_event;
                /* Don't create core motion event if neither x nor y are
                 * present */
                if (!BitIsOn(e->valuators.mask, 0) &&
                    !BitIsOn(e->valuators.mask, 1))
                {
                    ret = BadMatch;
                    goto out;
                }
            }
            /* fallthrough */
        case ET_ButtonPress:
        case ET_ButtonRelease:
        case ET_KeyPress:
        case ET_KeyRelease:
            {
                DeviceEvent *e = &event->device_event;

                if (e->detail.key > 0xFF)
                {
                    ret = BadMatch;
                    goto out;
                }

                core = calloc(1, sizeof(*core));
                if (!core)
                    return BadAlloc;
                count = 1;
                core->u.u.type = e->type - ET_KeyPress + KeyPress;
                core->u.u.detail = e->detail.key & 0xFF;
                core->u.keyButtonPointer.time = e->time;
                core->u.keyButtonPointer.rootX = e->root_x;
                core->u.keyButtonPointer.rootY = e->root_y;
                core->u.keyButtonPointer.state = e->corestate;
                core->u.keyButtonPointer.root = e->root;
                EventSetKeyRepeatFlag(core,
                                      (e->type == ET_KeyPress &&
                                       e->key_repeat));
                ret = Success;
            }
            break;
        case ET_ProximityIn:
        case ET_ProximityOut:
        case ET_RawKeyPress:
        case ET_RawKeyRelease:
        case ET_RawButtonPress:
        case ET_RawButtonRelease:
        case ET_RawMotion:
            ret = BadMatch;
            goto out;
        default:
            /* XXX: */
            ErrorF("[dix] EventToCore: Not implemented yet \n");
            ret = BadImplementation;
    }

out:
    *core_out = core;
    *count_out = count;
    return ret;
}

/**
 * Convert the given event to the respective XI 1.x event and store it in
 * xi. xi is allocated on demand and must be freed by the caller.
 * count returns the number of events in xi. If count is 1, and the type of
 * xi is GenericEvent, then xi may be larger than 32 bytes.
 *
 * Return values:
 * Success ... core contains the matching core event.
 * BadValue .. One or more values in the internal event are invalid.
 * BadMatch .. The event has no XI equivalent.
 *
 * @param[in] ev The event to convert into an XI 1 event.
 * @param[out] xi Future memory location for the XI event.
 * @param[out] count Number of elements in xi.
 *
 * @return Success or the error code.
 */
int
EventToXI(InternalEvent *ev, xEvent **xi, int *count)
{
    switch (ev->any.type)
    {
        case ET_Motion:
        case ET_ButtonPress:
        case ET_ButtonRelease:
        case ET_KeyPress:
        case ET_KeyRelease:
        case ET_ProximityIn:
        case ET_ProximityOut:
            return eventToKeyButtonPointer(&ev->device_event, xi, count);
        case ET_DeviceChanged:
        case ET_RawKeyPress:
        case ET_RawKeyRelease:
        case ET_RawButtonPress:
        case ET_RawButtonRelease:
        case ET_RawMotion:
            *count = 0;
            *xi = NULL;
            return BadMatch;
        default:
            break;
    }

    ErrorF("[dix] EventToXI: Not implemented for %d \n", ev->any.type);
    return BadImplementation;
}

/**
 * Convert the given event to the respective XI 2.x event and store it in xi.
 * xi is allocated on demand and must be freed by the caller.
 *
 * Return values:
 * Success ... core contains the matching core event.
 * BadValue .. One or more values in the internal event are invalid.
 * BadMatch .. The event has no XI2 equivalent.
 *
 * @param[in] ev The event to convert into an XI2 event
 * @param[out] xi Future memory location for the XI2 event.
 *
 * @return Success or the error code.
 */
int
EventToXI2(InternalEvent *ev, xEvent **xi)
{
    switch (ev->any.type)
    {
        /* Enter/FocusIn are for grabs. We don't need an actual event, since
         * the real events delivered are triggered elsewhere */
        case ET_Enter:
        case ET_FocusIn:
            *xi = NULL;
            return Success;
        case ET_Motion:
        case ET_ButtonPress:
        case ET_ButtonRelease:
        case ET_KeyPress:
        case ET_KeyRelease:
            return eventToDeviceEvent(&ev->device_event, xi);
        case ET_ProximityIn:
        case ET_ProximityOut:
            *xi = NULL;
            return BadMatch;
        case ET_DeviceChanged:
            return eventToDeviceChanged(&ev->changed_event, xi);
        case ET_RawKeyPress:
        case ET_RawKeyRelease:
        case ET_RawButtonPress:
        case ET_RawButtonRelease:
        case ET_RawMotion:
            return eventToRawEvent(&ev->raw_event, xi);
        default:
            break;
    }

    ErrorF("[dix] EventToXI2: Not implemented for %d \n", ev->any.type);
    return BadImplementation;
}

static int
eventToKeyButtonPointer(DeviceEvent *ev, xEvent **xi, int *count)
{
    int num_events;
    int first; /* dummy */
    deviceKeyButtonPointer *kbp;

    /* Sorry, XI 1.x protocol restrictions. */
    if (ev->detail.button > 0xFF || ev->deviceid >= 0x80)
    {
        *count = 0;
        return Success;
    }

    num_events = (countValuators(ev, &first) + 5)/6; /* valuator ev */
    if (num_events <= 0)
    {
        switch (ev->type)
        {
            case ET_KeyPress:
            case ET_KeyRelease:
            case ET_ButtonPress:
            case ET_ButtonRelease:
                /* no axes is ok */
                break;
            case ET_Motion:
            case ET_ProximityIn:
            case ET_ProximityOut:
                *count = 0;
                return BadMatch;
        }
    }

    num_events++; /* the actual event event */

    *xi = calloc(num_events, sizeof(xEvent));
    if (!(*xi))
    {
        return BadAlloc;
    }

    kbp           = (deviceKeyButtonPointer*)(*xi);
    kbp->detail   = ev->detail.button;
    kbp->time     = ev->time;
    kbp->root     = ev->root;
    kbp->root_x   = ev->root_x;
    kbp->root_y   = ev->root_y;
    kbp->deviceid = ev->deviceid;
    kbp->state    = ev->corestate;
    EventSetKeyRepeatFlag((xEvent*)kbp,
                          (ev->type == ET_KeyPress && ev->key_repeat));

    if (num_events > 1)
        kbp->deviceid |= MORE_EVENTS;

    switch(ev->type)
    {
        case ET_Motion:        kbp->type = DeviceMotionNotify;  break;
        case ET_ButtonPress:   kbp->type = DeviceButtonPress;   break;
        case ET_ButtonRelease: kbp->type = DeviceButtonRelease; break;
        case ET_KeyPress:      kbp->type = DeviceKeyPress;      break;
        case ET_KeyRelease:    kbp->type = DeviceKeyRelease;    break;
        case ET_ProximityIn:   kbp->type = ProximityIn;         break;
        case ET_ProximityOut:  kbp->type = ProximityOut;        break;
        default:
            break;
    }

    if (num_events > 1)
    {
        getValuatorEvents(ev, (deviceValuator*)(kbp + 1));
    }

    *count = num_events;
    return Success;
}


/**
 * Set first to the first valuator in the event ev and return the number of
 * valuators from first to the last set valuator.
 */
static int
countValuators(DeviceEvent *ev, int *first)
{
    int first_valuator = -1, last_valuator = -1, num_valuators = 0;
    int i;

    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)
    {
        if (BitIsOn(ev->valuators.mask, i))
        {
            if (first_valuator == -1)
                first_valuator = i;
            last_valuator = i;
        }
    }

    if (first_valuator != -1)
    {
        num_valuators = last_valuator - first_valuator + 1;
        *first = first_valuator;
    }

    return num_valuators;
}

static int
getValuatorEvents(DeviceEvent *ev, deviceValuator *xv)
{
    int i;
    int state = 0;
    int first_valuator, num_valuators;


    num_valuators = countValuators(ev, &first_valuator);
    if (num_valuators > 0)
    {
        DeviceIntPtr dev = NULL;
        dixLookupDevice(&dev, ev->deviceid, serverClient, DixUseAccess);
        /* State needs to be assembled BEFORE the device is updated. */
        state = (dev && dev->key) ? XkbStateFieldFromRec(&dev->key->xkbInfo->state) : 0;
        state |= (dev && dev->button) ? (dev->button->state) : 0;
    }

    /* FIXME: non-continuous valuator data in internal events*/
    for (i = 0; i < num_valuators; i += 6, xv++) {
        xv->type = DeviceValuator;
        xv->first_valuator = first_valuator + i;
        xv->num_valuators = ((num_valuators - i) > 6) ? 6 : (num_valuators - i);
        xv->deviceid = ev->deviceid;
        xv->device_state = state;
        switch (xv->num_valuators) {
        case 6:
            xv->valuator5 = ev->valuators.data[xv->first_valuator + 5];
        case 5:
            xv->valuator4 = ev->valuators.data[xv->first_valuator + 4];
        case 4:
            xv->valuator3 = ev->valuators.data[xv->first_valuator + 3];
        case 3:
            xv->valuator2 = ev->valuators.data[xv->first_valuator + 2];
        case 2:
            xv->valuator1 = ev->valuators.data[xv->first_valuator + 1];
        case 1:
            xv->valuator0 = ev->valuators.data[xv->first_valuator + 0];
        }

        if (i + 6 < num_valuators)
            xv->deviceid |= MORE_EVENTS;
    }

    return (num_valuators + 5) / 6;
}


static int
appendKeyInfo(DeviceChangedEvent *dce, xXIKeyInfo* info)
{
    uint32_t *kc;
    int i;

    info->type = XIKeyClass;
    info->num_keycodes = dce->keys.max_keycode - dce->keys.min_keycode + 1;
    info->length = sizeof(xXIKeyInfo)/4 + info->num_keycodes;
    info->sourceid = dce->sourceid;

    kc = (uint32_t*)&info[1];
    for (i = 0; i < info->num_keycodes; i++)
        *kc++ = i + dce->keys.min_keycode;

    return info->length * 4;
}

static int
appendButtonInfo(DeviceChangedEvent *dce, xXIButtonInfo *info)
{
    unsigned char *bits;
    int mask_len;

    mask_len = bytes_to_int32(bits_to_bytes(dce->buttons.num_buttons));

    info->type = XIButtonClass;
    info->num_buttons = dce->buttons.num_buttons;
    info->length = bytes_to_int32(sizeof(xXIButtonInfo)) +
                   info->num_buttons + mask_len;
    info->sourceid = dce->sourceid;

    bits = (unsigned char*)&info[1];
    memset(bits, 0, mask_len * 4);
    /* FIXME: is_down? */

    bits += mask_len * 4;
    memcpy(bits, dce->buttons.names, dce->buttons.num_buttons * sizeof(Atom));

    return info->length * 4;
}

static int
appendValuatorInfo(DeviceChangedEvent *dce, xXIValuatorInfo *info, int axisnumber)
{
    info->type = XIValuatorClass;
    info->length = sizeof(xXIValuatorInfo)/4;
    info->label = dce->valuators[axisnumber].name;
    info->min.integral = dce->valuators[axisnumber].min;
    info->min.frac = 0;
    info->max.integral = dce->valuators[axisnumber].max;
    info->max.frac = 0;
    /* FIXME: value */
    info->value.integral = 0;
    info->value.frac = 0;
    info->resolution = dce->valuators[axisnumber].resolution;
    info->number = axisnumber;
    info->mode = dce->valuators[axisnumber].mode;
    info->sourceid = dce->sourceid;

    return info->length * 4;
}

static int
eventToDeviceChanged(DeviceChangedEvent *dce, xEvent **xi)
{
    xXIDeviceChangedEvent *dcce;
    int len = sizeof(xXIDeviceChangedEvent);
    int nkeys;
    char *ptr;

    if (dce->buttons.num_buttons)
    {
        len += sizeof(xXIButtonInfo);
        len += dce->buttons.num_buttons * sizeof(Atom); /* button names */
        len += pad_to_int32(bits_to_bytes(dce->buttons.num_buttons));
    }
    if (dce->num_valuators)
        len += sizeof(xXIValuatorInfo) * dce->num_valuators;

    nkeys = (dce->keys.max_keycode > 0) ?
                dce->keys.max_keycode - dce->keys.min_keycode + 1 : 0;
    if (nkeys > 0)
    {
        len += sizeof(xXIKeyInfo);
        len += sizeof(CARD32) * nkeys; /* keycodes */
    }

    dcce = calloc(1, len);
    if (!dcce)
    {
        ErrorF("[Xi] BadAlloc in SendDeviceChangedEvent.\n");
        return BadAlloc;
    }

    dcce->type         = GenericEvent;
    dcce->extension    = IReqCode;
    dcce->evtype       = XI_DeviceChanged;
    dcce->time         = dce->time;
    dcce->deviceid     = dce->deviceid;
    dcce->sourceid     = dce->sourceid;
    dcce->reason       = (dce->flags & DEVCHANGE_DEVICE_CHANGE) ? XIDeviceChange : XISlaveSwitch;
    dcce->num_classes  = 0;
    dcce->length = bytes_to_int32(len - sizeof(xEvent));

    ptr = (char*)&dcce[1];
    if (dce->buttons.num_buttons)
    {
        dcce->num_classes++;
        ptr += appendButtonInfo(dce, (xXIButtonInfo*)ptr);
    }

    if (nkeys)
    {
        dcce->num_classes++;
        ptr += appendKeyInfo(dce, (xXIKeyInfo*)ptr);
    }

    if (dce->num_valuators)
    {
        int i;

        dcce->num_classes += dce->num_valuators;
        for (i = 0; i < dce->num_valuators; i++)
            ptr += appendValuatorInfo(dce, (xXIValuatorInfo*)ptr, i);
    }

    *xi = (xEvent*)dcce;

    return Success;
}

static int count_bits(unsigned char* ptr, int len)
{
    int bits = 0;
    unsigned int i;
    unsigned char x;

    for (i = 0; i < len; i++)
    {
        x = ptr[i];
        while(x > 0)
        {
            bits += (x & 0x1);
            x >>= 1;
        }
    }
    return bits;
}

static int
eventToDeviceEvent(DeviceEvent *ev, xEvent **xi)
{
    int len = sizeof(xXIDeviceEvent);
    xXIDeviceEvent *xde;
    int i, btlen, vallen;
    char *ptr;
    FP3232 *axisval;

    /* FIXME: this should just send the buttons we have, not MAX_BUTTONs. Same
     * with MAX_VALUATORS below */
    /* btlen is in 4 byte units */
    btlen = bytes_to_int32(bits_to_bytes(MAX_BUTTONS));
    len += btlen * 4; /* buttonmask len */


    vallen = count_bits(ev->valuators.mask, sizeof(ev->valuators.mask)/sizeof(ev->valuators.mask[0]));
    len += vallen * 2 * sizeof(uint32_t); /* axisvalues */
    vallen = bytes_to_int32(bits_to_bytes(MAX_VALUATORS));
    len += vallen * 4; /* valuators mask */

    *xi = calloc(1, len);
    xde = (xXIDeviceEvent*)*xi;
    xde->type           = GenericEvent;
    xde->extension      = IReqCode;
    xde->evtype         = GetXI2Type((InternalEvent*)ev);
    xde->time           = ev->time;
    xde->length         = bytes_to_int32(len - sizeof(xEvent));
    xde->detail         = ev->detail.button;
    xde->root           = ev->root;
    xde->buttons_len    = btlen;
    xde->valuators_len  = vallen;
    xde->deviceid       = ev->deviceid;
    xde->sourceid       = ev->sourceid;
    xde->root_x         = FP1616(ev->root_x, ev->root_x_frac);
    xde->root_y         = FP1616(ev->root_y, ev->root_y_frac);

    if (ev->key_repeat)
        xde->flags      |= XIKeyRepeat;

    xde->mods.base_mods         = ev->mods.base;
    xde->mods.latched_mods      = ev->mods.latched;
    xde->mods.locked_mods       = ev->mods.locked;
    xde->mods.effective_mods    = ev->mods.effective;

    xde->group.base_group       = ev->group.base;
    xde->group.latched_group    = ev->group.latched;
    xde->group.locked_group     = ev->group.locked;
    xde->group.effective_group  = ev->group.effective;

    ptr = (char*)&xde[1];
    for (i = 0; i < sizeof(ev->buttons) * 8; i++)
    {
        if (BitIsOn(ev->buttons, i))
            SetBit(ptr, i);
    }

    ptr += xde->buttons_len * 4;
    axisval = (FP3232*)(ptr + xde->valuators_len * 4);
    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)
    {
        if (BitIsOn(ev->valuators.mask, i))
        {
            SetBit(ptr, i);
            axisval->integral = ev->valuators.data[i];
            axisval->frac = ev->valuators.data_frac[i];
            axisval++;
        }
    }

    return Success;
}

static int
eventToRawEvent(RawDeviceEvent *ev, xEvent **xi)
{
    xXIRawEvent* raw;
    int vallen, nvals;
    int i, len = sizeof(xXIRawEvent);
    char *ptr;
    FP3232 *axisval;

    nvals = count_bits(ev->valuators.mask, sizeof(ev->valuators.mask));
    len += nvals * sizeof(FP3232) * 2; /* 8 byte per valuator, once
                                    raw, once processed */
    vallen = bytes_to_int32(bits_to_bytes(MAX_VALUATORS));
    len += vallen * 4; /* valuators mask */

    *xi = calloc(1, len);
    raw = (xXIRawEvent*)*xi;
    raw->type           = GenericEvent;
    raw->extension      = IReqCode;
    raw->evtype         = GetXI2Type((InternalEvent*)ev);
    raw->time           = ev->time;
    raw->length         = bytes_to_int32(len - sizeof(xEvent));
    raw->detail         = ev->detail.button;
    raw->deviceid       = ev->deviceid;
    raw->valuators_len  = vallen;

    ptr = (char*)&raw[1];
    axisval = (FP3232*)(ptr + raw->valuators_len * 4);
    for (i = 0; i < sizeof(ev->valuators.mask) * 8; i++)
    {
        if (BitIsOn(ev->valuators.mask, i))
        {
            SetBit(ptr, i);
            axisval->integral = ev->valuators.data[i];
            axisval->frac = ev->valuators.data_frac[i];
            (axisval + nvals)->integral = ev->valuators.data_raw[i];
            (axisval + nvals)->frac = ev->valuators.data_raw_frac[i];
            axisval++;
        }
    }

    return Success;
}

/**
 * Return the corresponding core type for the given event or 0 if no core
 * equivalent exists.
 */
int
GetCoreType(InternalEvent *event)
{
    int coretype = 0;
    switch(event->any.type)
    {
        case ET_Motion:         coretype = MotionNotify;  break;
        case ET_ButtonPress:    coretype = ButtonPress;   break;
        case ET_ButtonRelease:  coretype = ButtonRelease; break;
        case ET_KeyPress:       coretype = KeyPress;      break;
        case ET_KeyRelease:     coretype = KeyRelease;    break;
        default:
            break;
    }
    return coretype;
}

/**
 * Return the corresponding XI 1.x type for the given event or 0 if no
 * equivalent exists.
 */
int
GetXIType(InternalEvent *event)
{
    int xitype = 0;
    switch(event->any.type)
    {
        case ET_Motion:         xitype = DeviceMotionNotify;  break;
        case ET_ButtonPress:    xitype = DeviceButtonPress;   break;
        case ET_ButtonRelease:  xitype = DeviceButtonRelease; break;
        case ET_KeyPress:       xitype = DeviceKeyPress;      break;
        case ET_KeyRelease:     xitype = DeviceKeyRelease;    break;
        case ET_ProximityIn:    xitype = ProximityIn;         break;
        case ET_ProximityOut:   xitype = ProximityOut;        break;
        default:
            break;
    }
    return xitype;
}

/**
 * Return the corresponding XI 2.x type for the given event or 0 if no
 * equivalent exists.
 */
int
GetXI2Type(InternalEvent *event)
{
    int xi2type = 0;

    switch(event->any.type)
    {
        case ET_Motion:         xi2type = XI_Motion;           break;
        case ET_ButtonPress:    xi2type = XI_ButtonPress;      break;
        case ET_ButtonRelease:  xi2type = XI_ButtonRelease;    break;
        case ET_KeyPress:       xi2type = XI_KeyPress;         break;
        case ET_KeyRelease:     xi2type = XI_KeyRelease;       break;
        case ET_Enter:          xi2type = XI_Enter;            break;
        case ET_Leave:          xi2type = XI_Leave;            break;
        case ET_Hierarchy:      xi2type = XI_HierarchyChanged; break;
        case ET_DeviceChanged:  xi2type = XI_DeviceChanged;    break;
        case ET_RawKeyPress:    xi2type = XI_RawKeyPress;      break;
        case ET_RawKeyRelease:  xi2type = XI_RawKeyRelease;    break;
        case ET_RawButtonPress: xi2type = XI_RawButtonPress;   break;
        case ET_RawButtonRelease: xi2type = XI_RawButtonRelease; break;
        case ET_RawMotion:      xi2type = XI_RawMotion;        break;
        case ET_FocusIn:        xi2type = XI_FocusIn;          break;
        case ET_FocusOut:       xi2type = XI_FocusOut;         break;
        default:
            break;
    }
    return xi2type;
}