summaryrefslogtreecommitdiff
path: root/src/compositor-x11.c
blob: 56b322876be143c1e6f017e5ca5498c1b8d93464 (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
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
/*
 * Copyright © 2008-2011 Kristian Høgsberg
 * Copyright © 2010-2011 Intel Corporation
 * Copyright © 2013 Vasily Khoruzhick <anarsoul@gmail.com>
 *
 * 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, and that the name of the copyright holders not be used in
 * advertising or publicity pertaining to distribution of the software
 * without specific, written prior permission.  The copyright holders make
 * no representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS 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.
 */

#include "config.h"

#include <assert.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <sys/shm.h>
#include <linux/input.h>

#include <xcb/xcb.h>
#include <xcb/shm.h>
#ifdef HAVE_XCB_XKB
#include <xcb/xkb.h>
#endif

#include <X11/Xlib.h>
#include <X11/Xlib-xcb.h>

#include <xkbcommon/xkbcommon.h>

#include "compositor.h"
#include "gl-renderer.h"
#include "pixman-renderer.h"
#include "../shared/config-parser.h"
#include "../shared/image-loader.h"

#define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)

static int option_width;
static int option_height;
static int option_scale;
static int option_count;

struct x11_compositor {
	struct weston_compositor	 base;

	Display			*dpy;
	xcb_connection_t	*conn;
	xcb_screen_t		*screen;
	xcb_cursor_t		 null_cursor;
	struct wl_array		 keys;
	struct wl_event_source	*xcb_source;
	struct xkb_keymap	*xkb_keymap;
	unsigned int		 has_xkb;
	uint8_t			 xkb_event_base;
	int			 use_pixman;

	int			 has_net_wm_state_fullscreen;

	/* We could map multi-pointer X to multiple wayland seats, but
	 * for now we only support core X input. */
	struct weston_seat		 core_seat;
	wl_fixed_t			 prev_x;
	wl_fixed_t			 prev_y;

	struct {
		xcb_atom_t		 wm_protocols;
		xcb_atom_t		 wm_normal_hints;
		xcb_atom_t		 wm_size_hints;
		xcb_atom_t		 wm_delete_window;
		xcb_atom_t		 wm_class;
		xcb_atom_t		 net_wm_name;
		xcb_atom_t		 net_supporting_wm_check;
		xcb_atom_t		 net_supported;
		xcb_atom_t		 net_wm_icon;
		xcb_atom_t		 net_wm_state;
		xcb_atom_t		 net_wm_state_fullscreen;
		xcb_atom_t		 string;
		xcb_atom_t		 utf8_string;
		xcb_atom_t		 cardinal;
		xcb_atom_t		 xkb_names;
	} atom;
};

struct x11_output {
	struct weston_output	base;

	xcb_window_t		window;
	struct weston_mode	mode;
	struct wl_event_source *finish_frame_timer;

	xcb_gc_t		gc;
	xcb_shm_seg_t		segment;
	pixman_image_t	       *hw_surface;
	int			shm_id;
	void		       *buf;
	uint8_t			depth;
	int32_t                 scale;
};

struct gl_renderer_interface *gl_renderer;

static struct xkb_keymap *
x11_compositor_get_keymap(struct x11_compositor *c)
{
	xcb_get_property_cookie_t cookie;
	xcb_get_property_reply_t *reply;
	struct xkb_rule_names names;
	struct xkb_keymap *ret;
	const char *value_all, *value_part;
	int length_all, length_part;

	memset(&names, 0, sizeof(names));

	cookie = xcb_get_property(c->conn, 0, c->screen->root,
				  c->atom.xkb_names, c->atom.string, 0, 1024);
	reply = xcb_get_property_reply(c->conn, cookie, NULL);
	if (reply == NULL)
		return NULL;

	value_all = xcb_get_property_value(reply);
	length_all = xcb_get_property_value_length(reply);
	value_part = value_all;

#define copy_prop_value(to) \
	length_part = strlen(value_part); \
	if (value_part + length_part < (value_all + length_all) && \
	    length_part > 0) \
		names.to = value_part; \
	value_part += length_part + 1;

	copy_prop_value(rules);
	copy_prop_value(model);
	copy_prop_value(layout);
	copy_prop_value(variant);
	copy_prop_value(options);
#undef copy_prop_value

	ret = xkb_map_new_from_names(c->base.xkb_context, &names, 0);

	free(reply);
	return ret;
}

static uint32_t
get_xkb_mod_mask(struct x11_compositor *c, uint32_t in)
{
	struct weston_xkb_info *info = c->core_seat.keyboard->xkb_info;
	uint32_t ret = 0;

	if ((in & ShiftMask) && info->shift_mod != XKB_MOD_INVALID)
		ret |= (1 << info->shift_mod);
	if ((in & LockMask) && info->caps_mod != XKB_MOD_INVALID)
		ret |= (1 << info->caps_mod);
	if ((in & ControlMask) && info->ctrl_mod != XKB_MOD_INVALID)
		ret |= (1 << info->ctrl_mod);
	if ((in & Mod1Mask) && info->alt_mod != XKB_MOD_INVALID)
		ret |= (1 << info->alt_mod);
	if ((in & Mod2Mask) && info->mod2_mod != XKB_MOD_INVALID)
		ret |= (1 << info->mod2_mod);
	if ((in & Mod3Mask) && info->mod3_mod != XKB_MOD_INVALID)
		ret |= (1 << info->mod3_mod);
	if ((in & Mod4Mask) && info->super_mod != XKB_MOD_INVALID)
		ret |= (1 << info->super_mod);
	if ((in & Mod5Mask) && info->mod5_mod != XKB_MOD_INVALID)
		ret |= (1 << info->mod5_mod);

	return ret;
}

static void
x11_compositor_setup_xkb(struct x11_compositor *c)
{
#ifndef HAVE_XCB_XKB
	weston_log("XCB-XKB not available during build\n");
	c->has_xkb = 0;
	c->xkb_event_base = 0;
	return;
#else
	const xcb_query_extension_reply_t *ext;
	xcb_generic_error_t *error;
	xcb_void_cookie_t select;
	xcb_xkb_use_extension_cookie_t use_ext;
	xcb_xkb_use_extension_reply_t *use_ext_reply;
	xcb_xkb_per_client_flags_cookie_t pcf;
	xcb_xkb_per_client_flags_reply_t *pcf_reply;
	xcb_xkb_get_state_cookie_t state;
	xcb_xkb_get_state_reply_t *state_reply;
	uint32_t values[1] = { XCB_EVENT_MASK_PROPERTY_CHANGE };

	c->has_xkb = 0;
	c->xkb_event_base = 0;

	ext = xcb_get_extension_data(c->conn, &xcb_xkb_id);
	if (!ext) {
		weston_log("XKB extension not available on host X11 server\n");
		return;
	}
	c->xkb_event_base = ext->first_event;

	select = xcb_xkb_select_events_checked(c->conn,
					       XCB_XKB_ID_USE_CORE_KBD,
					       XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
					       0,
					       XCB_XKB_EVENT_TYPE_STATE_NOTIFY,
					       0,
					       0,
					       NULL);
	error = xcb_request_check(c->conn, select);
	if (error) {
		weston_log("error: failed to select for XKB state events\n");
		free(error);
		return;
	}

	use_ext = xcb_xkb_use_extension(c->conn,
					XCB_XKB_MAJOR_VERSION,
					XCB_XKB_MINOR_VERSION);
	use_ext_reply = xcb_xkb_use_extension_reply(c->conn, use_ext, NULL);
	if (!use_ext_reply) {
		weston_log("couldn't start using XKB extension\n");
		return;
	}

	if (!use_ext_reply->supported) {
		weston_log("XKB extension version on the server is too old "
			   "(want %d.%d, has %d.%d)\n",
			   XCB_XKB_MAJOR_VERSION, XCB_XKB_MINOR_VERSION,
			   use_ext_reply->serverMajor, use_ext_reply->serverMinor);
		free(use_ext_reply);
		return;
	}
	free(use_ext_reply);

	pcf = xcb_xkb_per_client_flags(c->conn,
				       XCB_XKB_ID_USE_CORE_KBD,
				       XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
				       XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT,
				       0,
				       0,
				       0);
	pcf_reply = xcb_xkb_per_client_flags_reply(c->conn, pcf, NULL);
	if (!pcf_reply ||
	    !(pcf_reply->value & XCB_XKB_PER_CLIENT_FLAG_DETECTABLE_AUTO_REPEAT)) {
		weston_log("failed to set XKB per-client flags, not using "
			   "detectable repeat\n");
		free(pcf_reply);
		return;
	}
	free(pcf_reply);

	state = xcb_xkb_get_state(c->conn, XCB_XKB_ID_USE_CORE_KBD);
	state_reply = xcb_xkb_get_state_reply(c->conn, state, NULL);
	if (!state_reply) {
		weston_log("failed to get initial XKB state\n");
		return;
	}

	xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
			      get_xkb_mod_mask(c, state_reply->baseMods),
			      get_xkb_mod_mask(c, state_reply->latchedMods),
			      get_xkb_mod_mask(c, state_reply->lockedMods),
			      0,
			      0,
			      state_reply->group);

	free(state_reply);

	xcb_change_window_attributes(c->conn, c->screen->root,
				     XCB_CW_EVENT_MASK, values);

	c->has_xkb = 1;
#endif
}

#ifdef HAVE_XCB_XKB
static void
update_xkb_keymap(struct x11_compositor *c)
{
	struct xkb_keymap *keymap;

	keymap = x11_compositor_get_keymap(c);
	if (!keymap) {
		weston_log("failed to get XKB keymap\n");
		return;
	}
	weston_seat_update_keymap(&c->core_seat, keymap);
	xkb_keymap_unref(keymap);
}
#endif

static int
x11_input_create(struct x11_compositor *c, int no_input)
{
	struct xkb_keymap *keymap;

	weston_seat_init(&c->core_seat, &c->base, "default");

	if (no_input)
		return 0;

	weston_seat_init_pointer(&c->core_seat);

	keymap = x11_compositor_get_keymap(c);
	if (weston_seat_init_keyboard(&c->core_seat, keymap) < 0)
		return -1;
	if (keymap)
		xkb_map_unref(keymap);

	x11_compositor_setup_xkb(c);

	return 0;
}

static void
x11_input_destroy(struct x11_compositor *compositor)
{
	weston_seat_release(&compositor->core_seat);
}

static void
x11_output_start_repaint_loop(struct weston_output *output)
{
	uint32_t msec;
	struct timeval tv;

	gettimeofday(&tv, NULL);
	msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
	weston_output_finish_frame(output, msec);
}

static int
x11_output_repaint_gl(struct weston_output *output_base,
		      pixman_region32_t *damage)
{
	struct x11_output *output = (struct x11_output *)output_base;
	struct weston_compositor *ec = output->base.compositor;

	ec->renderer->repaint_output(output_base, damage);

	pixman_region32_subtract(&ec->primary_plane.damage,
				 &ec->primary_plane.damage, damage);

	wl_event_source_timer_update(output->finish_frame_timer, 10);
	return 0;
}

static void
set_clip_for_output(struct weston_output *output_base, pixman_region32_t *region)
{
	struct x11_output *output = (struct x11_output *)output_base;
	struct weston_compositor *ec = output->base.compositor;
	struct x11_compositor *c = (struct x11_compositor *)ec;
	pixman_region32_t transformed_region;
	pixman_box32_t *rects;
	xcb_rectangle_t *output_rects;
	xcb_void_cookie_t cookie;
	int nrects, i;
	xcb_generic_error_t *err;

	pixman_region32_init(&transformed_region);
	pixman_region32_copy(&transformed_region, region);
	pixman_region32_translate(&transformed_region,
				  -output_base->x, -output_base->y);
	weston_transformed_region(output_base->width, output_base->height,
				  output_base->transform,
				  output_base->current_scale,
				  &transformed_region, &transformed_region);

	rects = pixman_region32_rectangles(&transformed_region, &nrects);
	output_rects = calloc(nrects, sizeof(xcb_rectangle_t));

	if (output_rects == NULL) {
		pixman_region32_fini(&transformed_region);
		return;
	}

	for (i = 0; i < nrects; i++) {
		output_rects[i].x = rects[i].x1;
		output_rects[i].y = rects[i].y1;
		output_rects[i].width = rects[i].x2 - rects[i].x1;
		output_rects[i].height = rects[i].y2 - rects[i].y1;
	}

	pixman_region32_fini(&transformed_region);

	cookie = xcb_set_clip_rectangles_checked(c->conn, XCB_CLIP_ORDERING_UNSORTED,
					output->gc,
					0, 0, nrects,
					output_rects);
	err = xcb_request_check(c->conn, cookie);
	if (err != NULL) {
		weston_log("Failed to set clip rects, err: %d\n", err->error_code);
		free(err);
	}
	free(output_rects);
}


static int
x11_output_repaint_shm(struct weston_output *output_base,
		       pixman_region32_t *damage)
{
	struct x11_output *output = (struct x11_output *)output_base;
	struct weston_compositor *ec = output->base.compositor;
	struct x11_compositor *c = (struct x11_compositor *)ec;
	xcb_void_cookie_t cookie;
	xcb_generic_error_t *err;

	pixman_renderer_output_set_buffer(output_base, output->hw_surface);
	ec->renderer->repaint_output(output_base, damage);

	pixman_region32_subtract(&ec->primary_plane.damage,
				 &ec->primary_plane.damage, damage);
	set_clip_for_output(output_base, damage);
	cookie = xcb_shm_put_image_checked(c->conn, output->window, output->gc,
					pixman_image_get_width(output->hw_surface),
					pixman_image_get_height(output->hw_surface),
					0, 0,
					pixman_image_get_width(output->hw_surface),
					pixman_image_get_height(output->hw_surface),
					0, 0, output->depth, XCB_IMAGE_FORMAT_Z_PIXMAP,
					0, output->segment, 0);
	err = xcb_request_check(c->conn, cookie);
	if (err != NULL) {
		weston_log("Failed to put shm image, err: %d\n", err->error_code);
		free(err);
	}

	wl_event_source_timer_update(output->finish_frame_timer, 10);
	return 0;
}

static int
finish_frame_handler(void *data)
{
	struct x11_output *output = data;

	x11_output_start_repaint_loop(&output->base);

	return 1;
}

static void
x11_output_deinit_shm(struct x11_compositor *c, struct x11_output *output)
{
	xcb_void_cookie_t cookie;
	xcb_generic_error_t *err;
	xcb_free_gc(c->conn, output->gc);

	pixman_image_unref(output->hw_surface);
	output->hw_surface = NULL;
	cookie = xcb_shm_detach_checked(c->conn, output->segment);
	err = xcb_request_check(c->conn, cookie);
	if (err) {
		weston_log("xcb_shm_detach failed, error %d\n", err->error_code);
		free(err);
	}
	shmdt(output->buf);
}

static void
x11_output_destroy(struct weston_output *output_base)
{
	struct x11_output *output = (struct x11_output *)output_base;
	struct x11_compositor *compositor =
		(struct x11_compositor *)output->base.compositor;

	wl_event_source_remove(output->finish_frame_timer);

	if (compositor->use_pixman) {
		pixman_renderer_output_destroy(output_base);
		x11_output_deinit_shm(compositor, output);
	} else
		gl_renderer->output_destroy(output_base);

	xcb_destroy_window(compositor->conn, output->window);

	weston_output_destroy(&output->base);

	free(output);
}

static void
x11_output_set_wm_protocols(struct x11_compositor *c,
			    struct x11_output *output)
{
	xcb_atom_t list[1];

	list[0] = c->atom.wm_delete_window;
	xcb_change_property (c->conn, 
			     XCB_PROP_MODE_REPLACE,
			     output->window,
			     c->atom.wm_protocols,
			     XCB_ATOM_ATOM,
			     32,
			     ARRAY_LENGTH(list),
			     list);
}

struct wm_normal_hints {
    	uint32_t flags;
	uint32_t pad[4];
	int32_t min_width, min_height;
	int32_t max_width, max_height;
    	int32_t width_inc, height_inc;
    	int32_t min_aspect_x, min_aspect_y;
    	int32_t max_aspect_x, max_aspect_y;
	int32_t base_width, base_height;
	int32_t win_gravity;
};

#define WM_NORMAL_HINTS_MIN_SIZE	16
#define WM_NORMAL_HINTS_MAX_SIZE	32

static void
x11_output_set_icon(struct x11_compositor *c,
		    struct x11_output *output, const char *filename)
{
	uint32_t *icon;
	int32_t width, height;
	pixman_image_t *image;

	image = load_image(filename);
	if (!image)
		return;
	width = pixman_image_get_width(image);
	height = pixman_image_get_height(image);
	icon = malloc(width * height * 4 + 8);
	if (!icon) {
		pixman_image_unref(image);
		return;
	}

	icon[0] = width;
	icon[1] = height;
	memcpy(icon + 2, pixman_image_get_data(image), width * height * 4);
	xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
			    c->atom.net_wm_icon, c->atom.cardinal, 32,
			    width * height + 2, icon);
	free(icon);
	pixman_image_unref(image);
}

static void
x11_output_wait_for_map(struct x11_compositor *c, struct x11_output *output)
{
	xcb_map_notify_event_t *map_notify;
	xcb_configure_notify_event_t *configure_notify;
	xcb_generic_event_t *event;
	int mapped = 0, configured = 0;
	uint8_t response_type;

	/* This isn't the nicest way to do this.  Ideally, we could
	 * just go back to the main loop and once we get the configure
	 * notify, we add the output to the compositor.  While we do
	 * support output hotplug, we can't start up with no outputs.
	 * We could add the output and then resize once we get the
	 * configure notify, but we don't want to start up and
	 * immediately resize the output.
	 *
	 * Also, some window managers don't give us our final
	 * fullscreen size before map_notify, so if we don't get a
	 * configure_notify before map_notify, we just wait for the
	 * first one and hope that's our size. */

	xcb_flush(c->conn);

	while (!mapped || !configured) {
		event = xcb_wait_for_event(c->conn);
		response_type = event->response_type & ~0x80;

		switch (response_type) {
		case XCB_MAP_NOTIFY:
			map_notify = (xcb_map_notify_event_t *) event;
			if (map_notify->window == output->window)
				mapped = 1;
			break;

		case XCB_CONFIGURE_NOTIFY:
			configure_notify =
				(xcb_configure_notify_event_t *) event;


			if (configure_notify->width % output->scale != 0 ||
			    configure_notify->height % output->scale != 0)
				weston_log("Resolution is not a multiple of screen size, rounding\n");
			output->mode.width = configure_notify->width;
			output->mode.height = configure_notify->height;
			configured = 1;
			break;
		}
	}
}

static xcb_visualtype_t *
find_visual_by_id(xcb_screen_t *screen,
		   xcb_visualid_t id)
{
	xcb_depth_iterator_t i;
	xcb_visualtype_iterator_t j;
	for (i = xcb_screen_allowed_depths_iterator(screen);
	     i.rem;
	     xcb_depth_next(&i)) {
		for (j = xcb_depth_visuals_iterator(i.data);
		     j.rem;
		     xcb_visualtype_next(&j)) {
			if (j.data->visual_id == id)
				return j.data;
		}
	}
	return 0;
}

static uint8_t
get_depth_of_visual(xcb_screen_t *screen,
		   xcb_visualid_t id)
{
	xcb_depth_iterator_t i;
	xcb_visualtype_iterator_t j;
	for (i = xcb_screen_allowed_depths_iterator(screen);
	     i.rem;
	     xcb_depth_next(&i)) {
		for (j = xcb_depth_visuals_iterator(i.data);
		     j.rem;
		     xcb_visualtype_next(&j)) {
			if (j.data->visual_id == id)
				return i.data->depth;
		}
	}
	return 0;
}

static int
x11_output_init_shm(struct x11_compositor *c, struct x11_output *output,
	int width, int height)
{
	xcb_screen_iterator_t iter;
	xcb_visualtype_t *visual_type;
	xcb_format_iterator_t fmt;
	xcb_void_cookie_t cookie;
	xcb_generic_error_t *err;
	const xcb_query_extension_reply_t *ext;
	int bitsperpixel = 0;
	pixman_format_code_t pixman_format;

	/* Check if SHM is available */
	ext = xcb_get_extension_data(c->conn, &xcb_shm_id);
	if (ext == NULL || !ext->present) {
		/* SHM is missing */
		weston_log("SHM extension is not available\n");
		errno = ENOENT;
		return -1;
	}

	iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
	visual_type = find_visual_by_id(iter.data, iter.data->root_visual);
	if (!visual_type) {
		weston_log("Failed to lookup visual for root window\n");
		errno = ENOENT;
		return -1;
	}
	weston_log("Found visual, bits per value: %d, red_mask: %.8x, green_mask: %.8x, blue_mask: %.8x\n",
		visual_type->bits_per_rgb_value,
		visual_type->red_mask,
		visual_type->green_mask,
		visual_type->blue_mask);
	output->depth = get_depth_of_visual(iter.data, iter.data->root_visual);
	weston_log("Visual depth is %d\n", output->depth);

	for (fmt = xcb_setup_pixmap_formats_iterator(xcb_get_setup(c->conn));
	     fmt.rem;
	     xcb_format_next(&fmt)) {
		if (fmt.data->depth == output->depth) {
			bitsperpixel = fmt.data->bits_per_pixel;
			break;
		}
	}
	weston_log("Found format for depth %d, bpp: %d\n",
		output->depth, bitsperpixel);

	if  (bitsperpixel == 32 &&
	     visual_type->red_mask == 0xff0000 &&
	     visual_type->green_mask == 0x00ff00 &&
	     visual_type->blue_mask == 0x0000ff) {
		weston_log("Will use x8r8g8b8 format for SHM surfaces\n");
		pixman_format = PIXMAN_x8r8g8b8;
	} else if (bitsperpixel == 16 &&
	           visual_type->red_mask == 0x00f800 &&
	           visual_type->green_mask == 0x0007e0 &&
	           visual_type->blue_mask == 0x00001f) {
		weston_log("Will use r5g6b5 format for SHM surfaces\n");
		pixman_format = PIXMAN_r5g6b5;
	} else {
		weston_log("Can't find appropriate format for SHM pixmap\n");
		errno = ENOTSUP;
		return -1;
	}


	/* Create SHM segment and attach it */
	output->shm_id = shmget(IPC_PRIVATE, width * height * (bitsperpixel / 8), IPC_CREAT | S_IRWXU);
	if (output->shm_id == -1) {
		weston_log("x11shm: failed to allocate SHM segment\n");
		return -1;
	}
	output->buf = shmat(output->shm_id, NULL, 0 /* read/write */);
	if (-1 == (long)output->buf) {
		weston_log("x11shm: failed to attach SHM segment\n");
		return -1;
	}
	output->segment = xcb_generate_id(c->conn);
	cookie = xcb_shm_attach_checked(c->conn, output->segment, output->shm_id, 1);
	err = xcb_request_check(c->conn, cookie);
	if (err) {
		weston_log("x11shm: xcb_shm_attach error %d\n", err->error_code);
		free(err);
		return -1;
	}

	shmctl(output->shm_id, IPC_RMID, NULL);

	/* Now create pixman image */
	output->hw_surface = pixman_image_create_bits(pixman_format, width, height, output->buf,
		width * (bitsperpixel / 8));

	output->gc = xcb_generate_id(c->conn);
	xcb_create_gc(c->conn, output->gc, output->window, 0, NULL);

	return 0;
}

static struct x11_output *
x11_compositor_create_output(struct x11_compositor *c, int x, int y,
			     int width, int height, int fullscreen,
			     int no_input, char *configured_name,
			     uint32_t transform, int32_t scale)
{
	static const char name[] = "Weston Compositor";
	static const char class[] = "weston-1\0Weston Compositor";
	char title[32];
	struct x11_output *output;
	xcb_screen_iterator_t iter;
	struct wm_normal_hints normal_hints;
	struct wl_event_loop *loop;
	int output_width, output_height, width_mm, height_mm;
	int ret;
	uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
	xcb_atom_t atom_list[1];
	uint32_t values[2] = {
		XCB_EVENT_MASK_EXPOSURE |
		XCB_EVENT_MASK_STRUCTURE_NOTIFY,
		0
	};

	output_width = width * scale;
	output_height = height * scale;

	if (configured_name)
		sprintf(title, "%s - %s", name, configured_name);
	else
		strcpy(title, name);

	if (!no_input)
		values[0] |=
			XCB_EVENT_MASK_KEY_PRESS |
			XCB_EVENT_MASK_KEY_RELEASE |
			XCB_EVENT_MASK_BUTTON_PRESS |
			XCB_EVENT_MASK_BUTTON_RELEASE |
			XCB_EVENT_MASK_POINTER_MOTION |
			XCB_EVENT_MASK_ENTER_WINDOW |
			XCB_EVENT_MASK_LEAVE_WINDOW |
			XCB_EVENT_MASK_KEYMAP_STATE |
			XCB_EVENT_MASK_FOCUS_CHANGE;

	output = zalloc(sizeof *output);
	if (output == NULL)
		return NULL;

	output->mode.flags =
		WL_OUTPUT_MODE_CURRENT | WL_OUTPUT_MODE_PREFERRED;

	output->mode.width = output_width;
	output->mode.height = output_height;
	output->mode.refresh = 60000;
	output->scale = scale;
	wl_list_init(&output->base.mode_list);
	wl_list_insert(&output->base.mode_list, &output->mode.link);

	values[1] = c->null_cursor;
	output->window = xcb_generate_id(c->conn);
	iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
	xcb_create_window(c->conn,
			  XCB_COPY_FROM_PARENT,
			  output->window,
			  iter.data->root,
			  0, 0,
			  output_width, output_height,
			  0,
			  XCB_WINDOW_CLASS_INPUT_OUTPUT,
			  iter.data->root_visual,
			  mask, values);

	if (fullscreen) {
		atom_list[0] = c->atom.net_wm_state_fullscreen;
		xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE,
				    output->window,
				    c->atom.net_wm_state,
				    XCB_ATOM_ATOM, 32,
				    ARRAY_LENGTH(atom_list), atom_list);
	} else {
		/* Don't resize me. */
		memset(&normal_hints, 0, sizeof normal_hints);
		normal_hints.flags =
			WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
		normal_hints.min_width = output_width;
		normal_hints.min_height = output_height;
		normal_hints.max_width = output_width;
		normal_hints.max_height = output_height;
		xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
				    c->atom.wm_normal_hints,
				    c->atom.wm_size_hints, 32,
				    sizeof normal_hints / 4,
				    (uint8_t *) &normal_hints);
	}

	/* Set window name.  Don't bother with non-EWMH WMs. */
	xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
			    c->atom.net_wm_name, c->atom.utf8_string, 8,
			    strlen(title), title);
	xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
			    c->atom.wm_class, c->atom.string, 8,
			    sizeof class, class);

	x11_output_set_icon(c, output, DATADIR "/weston/wayland.png");

	x11_output_set_wm_protocols(c, output);

	xcb_map_window(c->conn, output->window);

	if (fullscreen)
		x11_output_wait_for_map(c, output);

	output->base.start_repaint_loop = x11_output_start_repaint_loop;
	if (c->use_pixman)
		output->base.repaint = x11_output_repaint_shm;
	else
		output->base.repaint = x11_output_repaint_gl;
	output->base.destroy = x11_output_destroy;
	output->base.assign_planes = NULL;
	output->base.set_backlight = NULL;
	output->base.set_dpms = NULL;
	output->base.switch_mode = NULL;
	output->base.current_mode = &output->mode;
	output->base.make = "xwayland";
	output->base.model = "none";

	if (configured_name)
		output->base.name = strdup(configured_name);

	width_mm = width * c->screen->width_in_millimeters /
		c->screen->width_in_pixels;
	height_mm = height * c->screen->height_in_millimeters /
		c->screen->height_in_pixels;
	weston_output_init(&output->base, &c->base,
			   x, y, width_mm, height_mm, transform, scale);

	if (c->use_pixman) {
		if (x11_output_init_shm(c, output,
					output->mode.width,
					output->mode.height) < 0)
			return NULL;
		if (pixman_renderer_output_create(&output->base) < 0) {
			x11_output_deinit_shm(c, output);
			return NULL;
		}
	} else {
		ret = gl_renderer->output_create(&output->base,
						 (EGLNativeWindowType) output->window,
						 gl_renderer->opaque_attribs,
						 NULL);
		if (ret < 0)
			return NULL;
	}

	loop = wl_display_get_event_loop(c->base.wl_display);
	output->finish_frame_timer =
		wl_event_loop_add_timer(loop, finish_frame_handler, output);

	wl_list_insert(c->base.output_list.prev, &output->base.link);

	weston_log("x11 output %dx%d, window id %d\n",
		   width, height, output->window);

	return output;
}

static struct x11_output *
x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
{
	struct x11_output *output;

	wl_list_for_each(output, &c->base.output_list, base.link) {
		if (output->window == window)
			return output;
	}

	assert(0);
}

static void
x11_compositor_delete_window(struct x11_compositor *c, xcb_window_t window)
{
	struct x11_output *output;

	output = x11_compositor_find_output(c, window);
	x11_output_destroy(&output->base);

	xcb_flush(c->conn);

	if (wl_list_empty(&c->base.output_list))
		wl_display_terminate(c->base.wl_display);
}

#ifdef HAVE_XCB_XKB
static void
update_xkb_state(struct x11_compositor *c, xcb_xkb_state_notify_event_t *state)
{
	xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
			      get_xkb_mod_mask(c, state->baseMods),
			      get_xkb_mod_mask(c, state->latchedMods),
			      get_xkb_mod_mask(c, state->lockedMods),
			      0,
			      0,
			      state->group);

	notify_modifiers(&c->core_seat,
			 wl_display_next_serial(c->base.wl_display));
}
#endif

/**
 * This is monumentally unpleasant.  If we don't have XCB-XKB bindings,
 * the best we can do (given that XCB also lacks XI2 support), is to take
 * the state from the core key events.  Unfortunately that only gives us
 * the effective (i.e. union of depressed/latched/locked) state, and we
 * need the granularity.
 *
 * So we still update the state with every key event we see, but also use
 * the state field from X11 events as a mask so we don't get any stuck
 * modifiers.
 */
static void
update_xkb_state_from_core(struct x11_compositor *c, uint16_t x11_mask)
{
	uint32_t mask = get_xkb_mod_mask(c, x11_mask);
	struct weston_keyboard *keyboard = c->core_seat.keyboard;

	xkb_state_update_mask(c->core_seat.keyboard->xkb_state.state,
			      keyboard->modifiers.mods_depressed & mask,
			      keyboard->modifiers.mods_latched & mask,
			      keyboard->modifiers.mods_locked & mask,
			      0,
			      0,
			      (x11_mask >> 13) & 3);
	notify_modifiers(&c->core_seat,
			 wl_display_next_serial(c->base.wl_display));
}

static void
x11_compositor_deliver_button_event(struct x11_compositor *c,
				    xcb_generic_event_t *event, int state)
{
	xcb_button_press_event_t *button_event =
		(xcb_button_press_event_t *) event;
	uint32_t button;
	struct x11_output *output;

	output = x11_compositor_find_output(c, button_event->event);

	if (state)
		xcb_grab_pointer(c->conn, 0, output->window,
				 XCB_EVENT_MASK_BUTTON_PRESS |
				 XCB_EVENT_MASK_BUTTON_RELEASE |
				 XCB_EVENT_MASK_POINTER_MOTION |
				 XCB_EVENT_MASK_ENTER_WINDOW |
				 XCB_EVENT_MASK_LEAVE_WINDOW,
				 XCB_GRAB_MODE_ASYNC,
				 XCB_GRAB_MODE_ASYNC,
				 output->window, XCB_CURSOR_NONE,
				 button_event->time);
	else
		xcb_ungrab_pointer(c->conn, button_event->time);

	if (!c->has_xkb)
		update_xkb_state_from_core(c, button_event->state);

	switch (button_event->detail) {
	default:
		button = button_event->detail + BTN_LEFT - 1;
		break;
	case 2:
		button = BTN_MIDDLE;
		break;
	case 3:
		button = BTN_RIGHT;
		break;
	case 4:
		/* Axis are measured in pixels, but the xcb events are discrete
		 * steps. Therefore move the axis by some pixels every step. */
		if (state)
			notify_axis(&c->core_seat,
				    weston_compositor_get_time(),
				    WL_POINTER_AXIS_VERTICAL_SCROLL,
				    -DEFAULT_AXIS_STEP_DISTANCE);
		return;
	case 5:
		if (state)
			notify_axis(&c->core_seat,
				    weston_compositor_get_time(),
				    WL_POINTER_AXIS_VERTICAL_SCROLL,
				    DEFAULT_AXIS_STEP_DISTANCE);
		return;
	case 6:
		if (state)
			notify_axis(&c->core_seat,
				    weston_compositor_get_time(),
				    WL_POINTER_AXIS_HORIZONTAL_SCROLL,
				    -DEFAULT_AXIS_STEP_DISTANCE);
		return;
	case 7:
		if (state)
			notify_axis(&c->core_seat,
				    weston_compositor_get_time(),
				    WL_POINTER_AXIS_HORIZONTAL_SCROLL,
				    DEFAULT_AXIS_STEP_DISTANCE);
		return;
	}

	notify_button(&c->core_seat,
		      weston_compositor_get_time(), button,
		      state ? WL_POINTER_BUTTON_STATE_PRESSED :
			      WL_POINTER_BUTTON_STATE_RELEASED);
}

static void
x11_compositor_deliver_motion_event(struct x11_compositor *c,
					xcb_generic_event_t *event)
{
	struct x11_output *output;
	wl_fixed_t x, y;
	xcb_motion_notify_event_t *motion_notify =
			(xcb_motion_notify_event_t *) event;

	if (!c->has_xkb)
		update_xkb_state_from_core(c, motion_notify->state);
	output = x11_compositor_find_output(c, motion_notify->event);
	weston_output_transform_coordinate(&output->base,
					   wl_fixed_from_int(motion_notify->event_x),
					   wl_fixed_from_int(motion_notify->event_y),
					   &x, &y);

	notify_motion(&c->core_seat, weston_compositor_get_time(),
		      x - c->prev_x, y - c->prev_y);

	c->prev_x = x;
	c->prev_y = y;
}

static void
x11_compositor_deliver_enter_event(struct x11_compositor *c,
					xcb_generic_event_t *event)
{
	struct x11_output *output;
	wl_fixed_t x, y;

	xcb_enter_notify_event_t *enter_notify =
			(xcb_enter_notify_event_t *) event;
	if (enter_notify->state >= Button1Mask)
		return;
	if (!c->has_xkb)
		update_xkb_state_from_core(c, enter_notify->state);
	output = x11_compositor_find_output(c, enter_notify->event);
	weston_output_transform_coordinate(&output->base,
					   wl_fixed_from_int(enter_notify->event_x),
					   wl_fixed_from_int(enter_notify->event_y), &x, &y);

	notify_pointer_focus(&c->core_seat, &output->base, x, y);

	c->prev_x = x;
	c->prev_y = y;
}

static int
x11_compositor_next_event(struct x11_compositor *c,
			  xcb_generic_event_t **event, uint32_t mask)
{
	if (mask & WL_EVENT_READABLE) {
		*event = xcb_poll_for_event(c->conn);
	} else {
#ifdef HAVE_XCB_POLL_FOR_QUEUED_EVENT
		*event = xcb_poll_for_queued_event(c->conn);
#else
		*event = xcb_poll_for_event(c->conn);
#endif
	}

	return *event != NULL;
}

static int
x11_compositor_handle_event(int fd, uint32_t mask, void *data)
{
	struct x11_compositor *c = data;
	struct x11_output *output;
	xcb_generic_event_t *event, *prev;
	xcb_client_message_event_t *client_message;
	xcb_enter_notify_event_t *enter_notify;
	xcb_key_press_event_t *key_press, *key_release;
	xcb_keymap_notify_event_t *keymap_notify;
	xcb_focus_in_event_t *focus_in;
	xcb_expose_event_t *expose;
	xcb_atom_t atom;
	xcb_window_t window;
	uint32_t *k;
	uint32_t i, set;
	uint8_t response_type;
	int count;

	prev = NULL;
	count = 0;
	while (x11_compositor_next_event(c, &event, mask)) {
		response_type = event->response_type & ~0x80;

		switch (prev ? prev->response_type & ~0x80 : 0x80) {
		case XCB_KEY_RELEASE:
			/* Suppress key repeat events; this is only used if we
			 * don't have XCB XKB support. */
			key_release = (xcb_key_press_event_t *) prev;
			key_press = (xcb_key_press_event_t *) event;
			if (response_type == XCB_KEY_PRESS &&
			    key_release->time == key_press->time &&
			    key_release->detail == key_press->detail) {
				/* Don't deliver the held key release
				 * event or the new key press event. */
				free(event);
				free(prev);
				prev = NULL;
				continue;
			} else {
				/* Deliver the held key release now
				 * and fall through and handle the new
				 * event below. */
				update_xkb_state_from_core(c, key_release->state);
				notify_key(&c->core_seat,
					   weston_compositor_get_time(),
					   key_release->detail - 8,
					   WL_KEYBOARD_KEY_STATE_RELEASED,
					   STATE_UPDATE_AUTOMATIC);
				free(prev);
				prev = NULL;
				break;
			}

		case XCB_FOCUS_IN:
			assert(response_type == XCB_KEYMAP_NOTIFY);
			keymap_notify = (xcb_keymap_notify_event_t *) event;
			c->keys.size = 0;
			for (i = 0; i < ARRAY_LENGTH(keymap_notify->keys) * 8; i++) {
				set = keymap_notify->keys[i >> 3] &
					(1 << (i & 7));
				if (set) {
					k = wl_array_add(&c->keys, sizeof *k);
					*k = i;
				}
			}

			/* Unfortunately the state only comes with the enter
			 * event, rather than with the focus event.  I'm not
			 * sure of the exact semantics around it and whether
			 * we can ensure that we get both? */
			notify_keyboard_focus_in(&c->core_seat, &c->keys,
						 STATE_UPDATE_AUTOMATIC);

			free(prev);
			prev = NULL;
			break;

		default:
			/* No previous event held */
			break;
		}

		switch (response_type) {
		case XCB_KEY_PRESS:
			key_press = (xcb_key_press_event_t *) event;
			if (!c->has_xkb)
				update_xkb_state_from_core(c, key_press->state);
			notify_key(&c->core_seat,
				   weston_compositor_get_time(),
				   key_press->detail - 8,
				   WL_KEYBOARD_KEY_STATE_PRESSED,
				   c->has_xkb ? STATE_UPDATE_NONE :
						STATE_UPDATE_AUTOMATIC);
			break;
		case XCB_KEY_RELEASE:
			/* If we don't have XKB, we need to use the lame
			 * autorepeat detection above. */
			if (!c->has_xkb) {
				prev = event;
				break;
			}
			key_release = (xcb_key_press_event_t *) event;
			notify_key(&c->core_seat,
				   weston_compositor_get_time(),
				   key_release->detail - 8,
				   WL_KEYBOARD_KEY_STATE_RELEASED,
				   STATE_UPDATE_NONE);
			break;
		case XCB_BUTTON_PRESS:
			x11_compositor_deliver_button_event(c, event, 1);
			break;
		case XCB_BUTTON_RELEASE:
			x11_compositor_deliver_button_event(c, event, 0);
			break;
		case XCB_MOTION_NOTIFY:
			x11_compositor_deliver_motion_event(c, event);
			break;

		case XCB_EXPOSE:
			expose = (xcb_expose_event_t *) event;
			output = x11_compositor_find_output(c, expose->window);
			weston_output_damage(&output->base);
			weston_output_schedule_repaint(&output->base);
			break;

		case XCB_ENTER_NOTIFY:
			x11_compositor_deliver_enter_event(c, event);
			break;

		case XCB_LEAVE_NOTIFY:
			enter_notify = (xcb_enter_notify_event_t *) event;
			if (enter_notify->state >= Button1Mask)
				break;
			if (!c->has_xkb)
				update_xkb_state_from_core(c, enter_notify->state);
			notify_pointer_focus(&c->core_seat, NULL, 0, 0);
			break;

		case XCB_CLIENT_MESSAGE:
			client_message = (xcb_client_message_event_t *) event;
			atom = client_message->data.data32[0];
			window = client_message->window;
			if (atom == c->atom.wm_delete_window)
				x11_compositor_delete_window(c, window);
			break;

		case XCB_FOCUS_IN:
			focus_in = (xcb_focus_in_event_t *) event;
			if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED)
				break;

			prev = event;
			break;

		case XCB_FOCUS_OUT:
			focus_in = (xcb_focus_in_event_t *) event;
			if (focus_in->mode == XCB_NOTIFY_MODE_WHILE_GRABBED ||
			    focus_in->mode == XCB_NOTIFY_MODE_UNGRAB)
				break;
			notify_keyboard_focus_out(&c->core_seat);
			break;

		default:
			break;
		}

#ifdef HAVE_XCB_XKB
		if (c->has_xkb) {
			if (response_type == c->xkb_event_base) {
				xcb_xkb_state_notify_event_t *state =
					(xcb_xkb_state_notify_event_t *) event;
				if (state->xkbType == XCB_XKB_STATE_NOTIFY)
					update_xkb_state(c, state);
			} else if (response_type == XCB_PROPERTY_NOTIFY) {
				xcb_property_notify_event_t *prop_notify =
					(xcb_property_notify_event_t *) event;
				if (prop_notify->window == c->screen->root &&
				    prop_notify->atom == c->atom.xkb_names &&
				    prop_notify->state == XCB_PROPERTY_NEW_VALUE)
					update_xkb_keymap(c);
			}
		}
#endif

		count++;
		if (prev != event)
			free (event);
	}

	switch (prev ? prev->response_type & ~0x80 : 0x80) {
	case XCB_KEY_RELEASE:
		key_release = (xcb_key_press_event_t *) prev;
		update_xkb_state_from_core(c, key_release->state);
		notify_key(&c->core_seat,
			   weston_compositor_get_time(),
			   key_release->detail - 8,
			   WL_KEYBOARD_KEY_STATE_RELEASED,
			   STATE_UPDATE_AUTOMATIC);
		free(prev);
		prev = NULL;
		break;
	default:
		break;
	}

	return count;
}

#define F(field) offsetof(struct x11_compositor, field)

static void
x11_compositor_get_resources(struct x11_compositor *c)
{
	static const struct { const char *name; int offset; } atoms[] = {
		{ "WM_PROTOCOLS",	F(atom.wm_protocols) },
		{ "WM_NORMAL_HINTS",	F(atom.wm_normal_hints) },
		{ "WM_SIZE_HINTS",	F(atom.wm_size_hints) },
		{ "WM_DELETE_WINDOW",	F(atom.wm_delete_window) },
		{ "WM_CLASS",		F(atom.wm_class) },
		{ "_NET_WM_NAME",	F(atom.net_wm_name) },
		{ "_NET_WM_ICON",	F(atom.net_wm_icon) },
		{ "_NET_WM_STATE",	F(atom.net_wm_state) },
		{ "_NET_WM_STATE_FULLSCREEN", F(atom.net_wm_state_fullscreen) },
		{ "_NET_SUPPORTING_WM_CHECK",
					F(atom.net_supporting_wm_check) },
		{ "_NET_SUPPORTED",     F(atom.net_supported) },
		{ "STRING",		F(atom.string) },
		{ "UTF8_STRING",	F(atom.utf8_string) },
		{ "CARDINAL",		F(atom.cardinal) },
		{ "_XKB_RULES_NAMES",	F(atom.xkb_names) },
	};

	xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
	xcb_intern_atom_reply_t *reply;
	xcb_pixmap_t pixmap;
	xcb_gc_t gc;
	unsigned int i;
	uint8_t data[] = { 0, 0, 0, 0 };

	for (i = 0; i < ARRAY_LENGTH(atoms); i++)
		cookies[i] = xcb_intern_atom (c->conn, 0,
					      strlen(atoms[i].name),
					      atoms[i].name);

	for (i = 0; i < ARRAY_LENGTH(atoms); i++) {
		reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
		*(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
		free(reply);
	}

	pixmap = xcb_generate_id(c->conn);
	gc = xcb_generate_id(c->conn);
	xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
	xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
	xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
		      pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
	c->null_cursor = xcb_generate_id(c->conn);
	xcb_create_cursor (c->conn, c->null_cursor,
			   pixmap, pixmap, 0, 0, 0,  0, 0, 0,  1, 1);
	xcb_free_gc(c->conn, gc);
	xcb_free_pixmap(c->conn, pixmap);
}

static void
x11_compositor_get_wm_info(struct x11_compositor *c)
{
	xcb_get_property_cookie_t cookie;
	xcb_get_property_reply_t *reply;
	xcb_atom_t *atom;
	unsigned int i;

	cookie = xcb_get_property(c->conn, 0, c->screen->root,
				  c->atom.net_supported,
				  XCB_ATOM_ATOM, 0, 1024);
	reply = xcb_get_property_reply(c->conn, cookie, NULL);
	if (reply == NULL)
		return;

	atom = (xcb_atom_t *) xcb_get_property_value(reply);

	for (i = 0; i < reply->value_len; i++) {
		if (atom[i] == c->atom.net_wm_state_fullscreen)
			c->has_net_wm_state_fullscreen = 1;
	}
}

static void
x11_restore(struct weston_compositor *ec)
{
}

static void
x11_destroy(struct weston_compositor *ec)
{
	struct x11_compositor *compositor = (struct x11_compositor *)ec;

	wl_event_source_remove(compositor->xcb_source);
	x11_input_destroy(compositor);

	weston_compositor_shutdown(ec); /* destroys outputs, too */

	XCloseDisplay(compositor->dpy);
	free(ec);
}

static uint32_t
parse_transform(const char *transform, const char *output_name)
{
	static const struct { const char *name; uint32_t token; } names[] = {
		{ "normal",	WL_OUTPUT_TRANSFORM_NORMAL },
		{ "90",		WL_OUTPUT_TRANSFORM_90 },
		{ "180",	WL_OUTPUT_TRANSFORM_180 },
		{ "270",	WL_OUTPUT_TRANSFORM_270 },
		{ "flipped",	WL_OUTPUT_TRANSFORM_FLIPPED },
		{ "flipped-90",	WL_OUTPUT_TRANSFORM_FLIPPED_90 },
		{ "flipped-180", WL_OUTPUT_TRANSFORM_FLIPPED_180 },
		{ "flipped-270", WL_OUTPUT_TRANSFORM_FLIPPED_270 },
	};
	unsigned int i;

	for (i = 0; i < ARRAY_LENGTH(names); i++)
		if (strcmp(names[i].name, transform) == 0)
			return names[i].token;

	weston_log("Invalid transform \"%s\" for output %s\n",
		   transform, output_name);

	return WL_OUTPUT_TRANSFORM_NORMAL;
}

static int
init_gl_renderer(struct x11_compositor *c)
{
	int ret;

	gl_renderer = weston_load_module("gl-renderer.so",
					 "gl_renderer_interface");
	if (!gl_renderer)
		return -1;

	ret = gl_renderer->create(&c->base, (EGLNativeDisplayType) c->dpy,
				  gl_renderer->opaque_attribs, NULL);

	return ret;
}
static struct weston_compositor *
x11_compositor_create(struct wl_display *display,
		      int fullscreen,
		      int no_input,
		      int use_pixman,
		      int *argc, char *argv[],
		      struct weston_config *config)
{
	struct x11_compositor *c;
	struct x11_output *output;
	struct weston_config_section *section;
	xcb_screen_iterator_t s;
	int i, x = 0, output_count = 0;
	int width, height, scale, count;
	const char *section_name;
	char *name, *t, *mode;
	uint32_t transform;

	weston_log("initializing x11 backend\n");

	c = zalloc(sizeof *c);
	if (c == NULL)
		return NULL;

	if (weston_compositor_init(&c->base, display, argc, argv, config) < 0)
		goto err_free;

	c->dpy = XOpenDisplay(NULL);
	if (c->dpy == NULL)
		goto err_free;

	c->conn = XGetXCBConnection(c->dpy);
	XSetEventQueueOwner(c->dpy, XCBOwnsEventQueue);

	if (xcb_connection_has_error(c->conn))
		goto err_xdisplay;

	s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
	c->screen = s.data;
	wl_array_init(&c->keys);

	x11_compositor_get_resources(c);
	x11_compositor_get_wm_info(c);

	if (!c->has_net_wm_state_fullscreen && fullscreen) {
		weston_log("Can not fullscreen without window manager support"
			   "(need _NET_WM_STATE_FULLSCREEN)\n");
		fullscreen = 0;
	}

	c->base.wl_display = display;
	c->use_pixman = use_pixman;
	if (c->use_pixman) {
		if (pixman_renderer_init(&c->base) < 0)
			goto err_xdisplay;
	}
	else if (init_gl_renderer(c) < 0) {
		goto err_xdisplay;
	}
	weston_log("Using %s renderer\n", use_pixman ? "pixman" : "gl");

	c->base.destroy = x11_destroy;
	c->base.restore = x11_restore;

	if (x11_input_create(c, no_input) < 0)
		goto err_renderer;

	width = option_width ? option_width : 1024;
	height = option_height ? option_height : 640;
	scale = option_scale ? option_scale : 1;
	count = option_count ? option_count : 1;

	section = NULL;
	while (weston_config_next_section(c->base.config,
					  &section, &section_name)) {
		if (strcmp(section_name, "output") != 0)
			continue;
		weston_config_section_get_string(section, "name", &name, NULL);
		if (name == NULL || name[0] != 'X') {
			free(name);
			continue;
		}

		weston_config_section_get_string(section,
						 "mode", &mode, "1024x600");
		if (sscanf(mode, "%dx%d", &width, &height) != 2) {
			weston_log("Invalid mode \"%s\" for output %s\n",
				   mode, name);
			width = 1024;
			height = 600;
		}
		free(mode);

		if (option_width)
			width = option_width;
		if (option_height)
			height = option_height;

		weston_config_section_get_int(section, "scale", &scale, 1);
		if (option_scale)
			scale = option_scale;

		weston_config_section_get_string(section,
						 "transform", &t, "normal");
		transform = parse_transform(t, name);
		free(t);

		output = x11_compositor_create_output(c, x, 0,
						      width, height,
						      fullscreen, no_input,
						      name, transform, scale);
		free(name);
		if (output == NULL)
			goto err_x11_input;

		x = pixman_region32_extents(&output->base.region)->x2;

		output_count++;
		if (option_count && output_count >= option_count)
			break;
	}

	for (i = output_count; i < count; i++) {
		output = x11_compositor_create_output(c, x, 0, width, height,
						      fullscreen, no_input, NULL,
						      WL_OUTPUT_TRANSFORM_NORMAL, scale);
		if (output == NULL)
			goto err_x11_input;
		x = pixman_region32_extents(&output->base.region)->x2;
	}

	c->xcb_source =
		wl_event_loop_add_fd(c->base.input_loop,
				     xcb_get_file_descriptor(c->conn),
				     WL_EVENT_READABLE,
				     x11_compositor_handle_event, c);
	wl_event_source_check(c->xcb_source);

	return &c->base;

err_x11_input:
	x11_input_destroy(c);
err_renderer:
	c->base.renderer->destroy(&c->base);
err_xdisplay:
	XCloseDisplay(c->dpy);
err_free:
	free(c);
	return NULL;
}

WL_EXPORT struct weston_compositor *
backend_init(struct wl_display *display, int *argc, char *argv[],
	     struct weston_config *config)
{
	int fullscreen = 0;
	int no_input = 0;
	int use_pixman = 0;

	const struct weston_option x11_options[] = {
		{ WESTON_OPTION_INTEGER, "width", 0, &option_width },
		{ WESTON_OPTION_INTEGER, "height", 0, &option_height },
		{ WESTON_OPTION_INTEGER, "scale", 0, &option_scale },
		{ WESTON_OPTION_BOOLEAN, "fullscreen", 'f', &fullscreen },
		{ WESTON_OPTION_INTEGER, "output-count", 0, &option_count },
		{ WESTON_OPTION_BOOLEAN, "no-input", 0, &no_input },
		{ WESTON_OPTION_BOOLEAN, "use-pixman", 0, &use_pixman },
	};

	parse_options(x11_options, ARRAY_LENGTH(x11_options), argc, argv);

	return x11_compositor_create(display,
				     fullscreen,
				     no_input,
				     use_pixman,
				     argc, argv, config);
}