File: tixImgCmp.c

package info (click to toggle)
tix 8.4.3-10
  • links: PTS
  • area: main
  • in suites: bookworm, bullseye, buster, sid
  • size: 9,080 kB
  • ctags: 7,129
  • sloc: ansic: 28,082; tcl: 22,774; python: 7,577; makefile: 331; cs: 253; sh: 210; perl: 128
file content (1513 lines) | stat: -rw-r--r-- 42,951 bytes parent folder | download | duplicates (5)
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

/*	$Id: tixImgCmp.c,v 1.7 2008/02/28 04:05:29 hobbs Exp $	*/

/* 
 * tkImgCmp.c --
 *
 *	This procedure implements images of type "compound" for Tix.
 *
 * Copyright (c) 1996, Expert Interface Technologies
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 */

#include <tixPort.h>
#include <tixInt.h>
#include <tixDef.h>

/*
 * ToDo: 
 *	- lineconfig and itemconfig command
 */

/*
 * The following data structure represents the master for a bitmap
 * image:
 */
typedef struct CmpMaster {
    Tk_ImageMaster tkMaster;	/* Tk's token for image master.  NULL means
				 * the image is being deleted. */
    Tcl_Interp *interp;		/* Interpreter for application that is
				 * using image. */
    Tcl_Command imageCmd;	/* Token for image command (used to delete
				 * it when the image goes away).  NULL means
				 * the image command has already been
				 * deleted. */
    Display * display;		/* Display of the the window associated with
				 * this image. We need to keep it
				 * because Tk_Display(CmpMaster.tkwin) may
				 * be invalid. */
    Tk_Window tkwin;		/* default options are taken from this window.
				 * If undefined, will use the main window
				 * of this application */
    int width, height;		/* Dimensions of image. */
    int padX, padY;
    struct CmpLine * lineHead;
    struct CmpLine * lineTail;

    /* Thde default options, etc */
    int borderWidth;		/* Width of 3-D borders. */
    Tk_3DBorder background;	/* Used for drawing background. */
    int relief;			/* Indicates whether window as a whole is
				 * raised, sunken, or flat. */

    TixFont font;		/* Information about text font.*/
    XColor *foreground;		/* Color for drawing text and bitmaps */
    GC gc;			/* default GC for drawing text. */

    int showBackground;		/* whether the background should be drawn */
    unsigned int changing;	/* is this image going to call Tk_ImageChanged
				 * in an idle event? */
    unsigned int isDeleted;
} CmpMaster;

#define TYPE_TEXT	0
#define TYPE_SPACE	1
#define TYPE_IMAGE	2
#define TYPE_BITMAP	3
#define TYPE_WIDGET	4

typedef struct CmpLine {
    struct CmpMaster *masterPtr;
    struct CmpLine * next;
    struct CmpItem * itemHead;
    struct CmpItem * itemTail;
    int padX, padY;
    Tk_Anchor anchor;
    int width, height;		/* Dimensions of this line. */

} CmpLine;

/* abstract type */

#define COMMON_MEMBERS \
    struct CmpLine * line; \
    struct CmpItem * next; \
    Tk_Anchor anchor; \
    char type; \
    int width; \
    int height; \
    int padX, padY

typedef struct CmpItem {
    COMMON_MEMBERS;
} CmpItem;

typedef struct CmpBitmapItem {
    COMMON_MEMBERS;

    Pixmap bitmap;
    XColor *foreground;
    XColor *background;
    GC gc;			/* GC for drawing the bitmap. */
} CmpBitmapItem;

typedef struct CmpImageItem {
    COMMON_MEMBERS;

    Tk_Image image;
    char * imageString;
} CmpImageItem;

typedef struct CmpSpaceItem {
    COMMON_MEMBERS;

} CmpSpaceItem;

typedef struct CmpTextItem {
    COMMON_MEMBERS;

    char * text;
    int numChars;
    Tk_Justify justify;		/* Justification to use for multi-line text. */
    int wrapLength;
    int underline;		/* Index of character to underline.  < 0 means
				 * don't underline anything. */
    XColor *foreground;
    TixFont font;		/* Information about text font, or NULL. */
    GC gc;			/* GC for drawing the bitmap. */
} CmpTextItem;

typedef union CmpItemPtr {
    CmpItem	  * item;
    CmpBitmapItem * bitmap;
    CmpImageItem  * image;
    CmpSpaceItem  * space;
    CmpTextItem  * text;
} CmpItemPtr;

/*
 * The type record for bitmap images:
 */
static int		ImgCmpCreate _ANSI_ARGS_((Tcl_Interp *interp,
			    char *name, int argc, Tcl_Obj *CONST objv[],
			    Tk_ImageType *typePtr, Tk_ImageMaster master,
			    ClientData *clientDataPtr));
static ClientData	ImgCmpGet _ANSI_ARGS_((Tk_Window tkwin,
			    ClientData clientData));
static void		ImgCmpDisplay _ANSI_ARGS_((ClientData clientData,
			    Display *display, Drawable drawable, 
			    int imageX, int imageY, int width, int height,
			    int drawableX, int drawableY));
static void		ImgCmpFree _ANSI_ARGS_((ClientData clientData,
			    Display *display));
static void		ImgCmpDelete _ANSI_ARGS_((ClientData clientData));
static void		ImgCmpFreeResources _ANSI_ARGS_((ClientData clientData));

Tk_ImageType tixCompoundImageType = {
    "compound",                     /* name */
    ImgCmpCreate,                   /* createProc */
    ImgCmpGet,                      /* getProc */
    ImgCmpDisplay,                  /* displayProc */
    ImgCmpFree,                     /* freeProc */
    ImgCmpDelete,                   /* deleteProc */
    NULL,                           /* postscriptProc (tk8.3 or later)*/
    NULL,                           /* nextPtr */
    NULL,                           /* reserved */
};

static Tk_ConfigSpec configSpecs[] = {
    {TK_CONFIG_BORDER, "-background", "background", "Background",
       DEF_CMPIMAGE_BG_COLOR, Tk_Offset(CmpMaster, background),
       TK_CONFIG_COLOR_ONLY},

    {TK_CONFIG_BORDER, "-background", "background", "Background",
       DEF_CMPIMAGE_BG_MONO, Tk_Offset(CmpMaster, background),
       TK_CONFIG_MONO_ONLY},

    {TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
       (char *) NULL, 0, 0},

    {TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
       (char *) NULL, 0, 0},

    {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", (char *) NULL,
       "0", Tk_Offset(CmpMaster, borderWidth), 0},

    {TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
       (char *) NULL, 0, 0},

    {TK_CONFIG_FONT, "-font", "font", "Font",
       DEF_CMPIMAGE_FONT, Tk_Offset(CmpMaster, font), 0},

    {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
       DEF_CMPIMAGE_FG_COLOR, Tk_Offset(CmpMaster, foreground),
       TK_CONFIG_COLOR_ONLY},

    {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
       DEF_CMPIMAGE_FG_MONO, Tk_Offset(CmpMaster, foreground),
       TK_CONFIG_MONO_ONLY},

    {TK_CONFIG_PIXELS, "-padx", (char *) NULL, (char *) NULL,
	"0", Tk_Offset(CmpMaster, padX), 0},

    {TK_CONFIG_PIXELS, "-pady", (char *) NULL, (char *) NULL,
	"0", Tk_Offset(CmpMaster, padY), 0},

    {TK_CONFIG_RELIEF, "-relief", (char *) NULL, (char *) NULL,
	"flat", Tk_Offset(CmpMaster, relief), 0},

    {TK_CONFIG_BOOLEAN, "-showbackground", (char *) NULL, (char *) NULL,
	"0", Tk_Offset(CmpMaster, showBackground), 0},

    {TK_CONFIG_WINDOW, "-window", (char *) NULL, (char *) NULL,
	(char *) NULL, Tk_Offset(CmpMaster, tkwin), TK_CONFIG_NULL_OK},

    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
	(char *) NULL, 0, 0}
};

static Tk_ConfigSpec lineConfigSpecs[] = {
    {TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
       "c", Tk_Offset(CmpLine, anchor), 0},
    {TK_CONFIG_PIXELS, "-padx", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpLine, padX), 0},
    {TK_CONFIG_PIXELS, "-pady", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpLine, padY), 0},
    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
	(char *) NULL, 0, 0}
};

static Tk_ConfigSpec bitmapConfigSpecs[] = {
    {TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
       "c", Tk_Offset(CmpBitmapItem, anchor), 0},

    {TK_CONFIG_COLOR, "-background", "background", "Background",
       "", Tk_Offset(CmpBitmapItem, background),
       TK_CONFIG_NULL_OK},

    {TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
       (char *) NULL, 0, 0},

    {TK_CONFIG_BITMAP, "-bitmap", (char *) NULL, (char *) NULL,
       "",  Tk_Offset(CmpBitmapItem, bitmap), TK_CONFIG_NULL_OK},

    {TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
       (char *) NULL, 0, 0},

    {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
       "", Tk_Offset(CmpBitmapItem, foreground),
       TK_CONFIG_NULL_OK},

    {TK_CONFIG_PIXELS, "-padx", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpBitmapItem, padX), 0},

    {TK_CONFIG_PIXELS, "-pady", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpBitmapItem, padY), 0},

    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
        (char *) NULL, 0, 0}
};

static Tk_ConfigSpec imageConfigSpecs[] = {
    {TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
       "c", Tk_Offset(CmpImageItem, anchor), 0},
    {TK_CONFIG_STRING, "-image", (char *) NULL, (char *) NULL,
       (char *) NULL, Tk_Offset(CmpImageItem, imageString), TK_CONFIG_NULL_OK},
    {TK_CONFIG_PIXELS, "-padx", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpImageItem, padX), 0},
    {TK_CONFIG_PIXELS, "-pady", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpImageItem, padY), 0},
    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
        (char *) NULL, 0, 0}
};

static Tk_ConfigSpec spaceConfigSpecs[] = {
    {TK_CONFIG_PIXELS, "-height", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpSpaceItem, height), 0},
    {TK_CONFIG_PIXELS, "-width", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpSpaceItem, width), 0},
    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
	(char *) NULL, 0, 0}
};

static Tk_ConfigSpec textConfigSpecs[] = {
    {TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
       "c", Tk_Offset(CmpTextItem, anchor), 0},

    {TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
       (char *) NULL, 0, 0},

    {TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL,
       "", Tk_Offset(CmpTextItem, font), TK_CONFIG_NULL_OK},

    {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
       "", Tk_Offset(CmpTextItem, foreground),
       TK_CONFIG_NULL_OK},

    {TK_CONFIG_JUSTIFY, "-justify", (char *) NULL, (char *) NULL,
       "left", Tk_Offset(CmpTextItem, justify), 0},

    {TK_CONFIG_PIXELS, "-padx", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpTextItem, padX), 0},

    {TK_CONFIG_PIXELS, "-pady", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpTextItem, padY), 0},

    {TK_CONFIG_STRING, "-text", (char *) NULL, (char *) NULL,
       "",  Tk_Offset(CmpTextItem, text), TK_CONFIG_NULL_OK},

    {TK_CONFIG_INT, "-underline", (char *) NULL, (char *) NULL,
       "-1", Tk_Offset(CmpTextItem, underline), 0},

    {TK_CONFIG_PIXELS, "-wraplength", (char *) NULL, (char *) NULL,
       "0", Tk_Offset(CmpTextItem, wrapLength), 0},

    {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
        (char *) NULL, 0, 0}
};

/*
 * Prototypes for procedures used only locally in this file:
 */

static int		ImgCmpCmd _ANSI_ARGS_((ClientData clientData,
			    Tcl_Interp *interp, int argc, CONST84 char **argv));
static void		ImgCmpCmdDeletedProc _ANSI_ARGS_((
			    ClientData clientData));
static int		ImgCmpConfigureMaster _ANSI_ARGS_((
			    CmpMaster *masterPtr, int argc, CONST84 char **argv,
			    int flags));
CmpBitmapItem *		AddNewBitmap _ANSI_ARGS_((CmpMaster *masterPtr,
			    CmpLine *line,
			    int argc, CONST84 char **argv));
CmpImageItem * 		AddNewImage _ANSI_ARGS_((CmpMaster *masterPtr,
			    CmpLine *line,
			    int argc, CONST84 char **argv));
CmpSpaceItem * 		AddNewSpace _ANSI_ARGS_((CmpMaster *masterPtr,
			    CmpLine *line,
			    int argc, CONST84 char **argv));
CmpTextItem * 		AddNewText _ANSI_ARGS_((CmpMaster *masterPtr,
			    CmpLine *line,
			    int argc, CONST84 char **argv));
CmpLine* 		AddNewLine _ANSI_ARGS_((CmpMaster *masterPtr,
			    int argc, CONST84 char **argv));
static void		CalculateMasterSize _ANSI_ARGS_((
			    ClientData clientData));
static void		ChangeImageWhenIdle _ANSI_ARGS_((
			    CmpMaster *masterPtr));
static void		ImageProc _ANSI_ARGS_((ClientData clientData,
			    int x, int y, int width, int height,
			    int imgWidth, int imgHeight));
static void 		FreeLine _ANSI_ARGS_((CmpLine * lPtr));
static void 		FreeItem _ANSI_ARGS_((CmpItemPtr p));
static void		CmpEventProc _ANSI_ARGS_((ClientData clientData,
			    XEvent *eventPtr));

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpCreate --
 *
 *	This procedure is called by the Tk image code to create "test"
 *	images.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	The data structure for a new image is allocated.
 *
 *----------------------------------------------------------------------
 */

	/* ARGSUSED */
static int
ImgCmpCreate(interp, name, argc, objv, typePtr, master, clientDataPtr)
    Tcl_Interp *interp;		/* Interpreter for application containing
				 * image. */
    char *name;			/* Name to use for image. */
    int argc;			/* Number of arguments. */
    Tcl_Obj *CONST objv[];	/* Argument strings for options (doesn't
				 * include image name or type). */
    Tk_ImageType *typePtr;	/* Pointer to our type record (not used). */
    Tk_ImageMaster master;	/* Token for image, to be used by us in
				 * later callbacks. */
    ClientData *clientDataPtr;	/* Store manager's token for image here;
				 * it will be returned in later callbacks. */
{
    CmpMaster *masterPtr;
    int i;
    CONST84 char *argvbuf[10];
    CONST84 char **argv = argvbuf;

    /*
     * Convert the objv arguments into string equivalent.
     */
    if (argc > 10) {
	argv = (CONST84 char **) ckalloc(argc * sizeof(char *));
    }
    for (i = 0; i < argc; i++) {
        /*
         * no need to free the value returned by Tcl_GetString. It's
         * managed by Tcl's object system.
         */

	argv[i] = Tcl_GetString(objv[i]);
    }

    masterPtr = (CmpMaster *) ckalloc(sizeof(CmpMaster));
    masterPtr->tkMaster = master;
    masterPtr->interp = interp;
    masterPtr->imageCmd = Tcl_CreateCommand(interp, name, ImgCmpCmd,
	(ClientData)masterPtr, ImgCmpCmdDeletedProc);
    masterPtr->tkwin = NULL;
    masterPtr->display = NULL;
    masterPtr->width = 0;
    masterPtr->height = 0;
    masterPtr->padX = 0;
    masterPtr->padY = 0;
    masterPtr->lineHead = NULL;
    masterPtr->lineTail = NULL;
    masterPtr->borderWidth = 0;
    masterPtr->background = NULL;
    masterPtr->relief = 0;
    masterPtr->font = NULL;
    masterPtr->foreground = NULL;
    masterPtr->gc = None;
    masterPtr->showBackground = 0;
    masterPtr->changing = 0;
    masterPtr->isDeleted = 0;
	
    if (ImgCmpConfigureMaster(masterPtr, argc, argv, 0) != TCL_OK) {
	ImgCmpDelete((ClientData) masterPtr);
	if (argv != argvbuf) {
	    ckfree((char *) argv);
	}
	return TCL_ERROR;
    }
    *clientDataPtr = (ClientData) masterPtr;
    if (argv != argvbuf) {
	ckfree((char *) argv);
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpConfigureMaster --
 *
 *	This procedure is called when a bitmap image is created or
 *	reconfigured.  It process configuration options and resets
 *	any instances of the image.
 *
 * Results:
 *	A standard Tcl return value.  If TCL_ERROR is returned then
 *	an error message is left in interp's result.
 *
 * Side effects:
 *	Existing instances of the image will be redisplayed to match
 *	the new configuration options.
 *
 *----------------------------------------------------------------------
 */
static int
ImgCmpConfigureMaster(masterPtr, argc, argv, flags)
    CmpMaster *masterPtr;	/* Pointer to data structure describing
				 * overall bitmap image to (reconfigure). */
    int argc;			/* Number of entries in argv. */
    CONST84 char **argv;	/* Pairs of configuration options for image. */
    int flags;			/* Flags to pass to Tk_ConfigureWidget,
				 * such as TK_CONFIG_ARGV_ONLY. */
{
    XGCValues gcValues;
    GC newGC;
    int i;

    if (argc %2) {
	Tcl_AppendResult(masterPtr->interp, "value missing for option \"",
	    argv[argc-1], "\"", NULL);
	return TCL_ERROR;
    }
    for (i=0; i<argc; i+=2) {
	size_t length = strlen(argv[i]);
	if (strncmp(argv[i], "-window", length) == 0) {
	    masterPtr->tkwin = Tk_NameToWindow(masterPtr->interp, argv[i+1],
		Tk_MainWindow(masterPtr->interp));
	    if (masterPtr->tkwin == NULL) {
		return TCL_ERROR;
	    }
	}
    }
    if (masterPtr->tkwin == NULL) {
	Tcl_AppendResult(masterPtr->interp, 
	    "no value given for -window option.", NULL);
	return TCL_ERROR;
    }
    masterPtr->display = Tk_Display(masterPtr->tkwin);

    if (Tk_ConfigureWidget(masterPtr->interp, masterPtr->tkwin,
	    configSpecs, argc, argv, (char *) masterPtr, flags) != TCL_OK) {
	return TCL_ERROR;
    }

    Tk_CreateEventHandler(masterPtr->tkwin,
	StructureNotifyMask, CmpEventProc, (ClientData)masterPtr);

    /*
     * Get the default GC for text and bitmaps
     */
    gcValues.foreground = masterPtr->foreground->pixel;
    gcValues.background = Tk_3DBorderColor(masterPtr->background)->pixel;
    gcValues.font = TixFontId(masterPtr->font);
    gcValues.graphics_exposures = False;
    newGC = Tk_GetGC(masterPtr->tkwin,
	 GCBackground|GCForeground|GCFont|GCGraphicsExposures,
	 &gcValues);
    if (masterPtr->gc != None) {
	Tk_FreeGC(Tk_Display(masterPtr->tkwin), masterPtr->gc);
    }
    masterPtr->gc = newGC;

    ChangeImageWhenIdle(masterPtr);
    return TCL_OK;
}

/*
 *--------------------------------------------------------------
 *
 * ImgCmpCmd --
 *
 *	This procedure is invoked to process the Tcl command
 *	that corresponds to an image managed by this module.
 *	See the user documentation for details on what it does.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	See the user documentation.
 *
 *--------------------------------------------------------------
 */
static int
ImgCmpCmd(clientData, interp, argc, argv)
    ClientData clientData;	/* Information about button widget. */
    Tcl_Interp *interp;		/* Current interpreter. */
    int argc;			/* Number of arguments. */
    CONST84 char **argv;	/* Argument strings. */
{
    CmpMaster *masterPtr = (CmpMaster *) clientData;
    int c, code;
    size_t length;

    if (argc < 2) {
	Tcl_AppendResult(interp, "wrong # args: should be \"",
		argv[0], " option ?arg arg ...?\"", NULL);
	return TCL_ERROR;
    }
    c = argv[1][0];
    length = strlen(argv[1]);
    if ((c == 'a') && (strncmp(argv[1], "add", length) == 0)) {
	if (argc < 3) {
	    return Tix_ArgcError(interp, argc, argv, 2, 
		"type ?option value? ...");
	}
	c = argv[2][0];
	length = strlen(argv[2]);

	if ((c == 'l') && (strncmp(argv[2], "line", length) == 0)) {
	    CmpLine * newLine;

	    newLine = AddNewLine(masterPtr, argc-3, argv+3);
	    if (newLine == NULL) {
		return TCL_ERROR;
	    }
	}
	else {
	    CmpItemPtr p;

	    if (masterPtr->lineTail == 0) {
		if (AddNewLine(masterPtr, 0, 0) == NULL) {
		    return TCL_ERROR;
		}
	    }
	    if ((c == 'b') && (strncmp(argv[2], "bitmap", length) == 0)) {
		p.bitmap = AddNewBitmap(masterPtr, masterPtr->lineTail, 
		    argc-3, argv+3);
		if (p.bitmap == NULL) {
		    return TCL_ERROR;
		}
	    }
	    else if ((c == 'i') && (strncmp(argv[2], "image", length) == 0)) {
		p.image = AddNewImage(masterPtr, masterPtr->lineTail, 
		    argc-3, argv+3);
		if (p.image == NULL) {
		    return TCL_ERROR;
		}
	    }
	    else if ((c == 's') && (strncmp(argv[2], "space", length) == 0)) {
		p.space = AddNewSpace(masterPtr, masterPtr->lineTail, 
		    argc-3, argv+3);
		if (p.space == NULL) {
		    return TCL_ERROR;
		}
	    }
	    else if ((c == 't') && (strncmp(argv[2], "text", length) == 0)) {
		p.text = AddNewText(masterPtr, masterPtr->lineTail, 
		    argc-3, argv+3);
		if (p.text == NULL) {
		    return TCL_ERROR;
		}
	    }
	    else {
		Tcl_AppendResult(interp, "unknown option \"",
		    argv[2], "\", must be bitmap, image, line, ",
		    "space, text or widget", NULL);
		return TCL_ERROR;
	    }

	    /* append to the end of the line */
	    if (masterPtr->lineTail->itemHead == NULL) {
		masterPtr->lineTail->itemHead =  p.item;
		masterPtr->lineTail->itemTail = p.item;
	    } else {
		masterPtr->lineTail->itemTail->next = p.item;
		masterPtr->lineTail->itemTail = p.item;
	    }
	}
	ChangeImageWhenIdle(masterPtr);
	return TCL_OK;
    } else if ((c == 'c') && (strncmp(argv[1], "cget", length) == 0)
	    && (length >= 2)) {
	if (argc != 3) {
	    Tcl_AppendResult(interp, "wrong # args: should be \"",
		    argv[0], " cget option\"",
		    (char *) NULL);
	    return TCL_ERROR;
	}
	return Tk_ConfigureValue(interp, Tk_MainWindow(interp), configSpecs,
		(char *) masterPtr, argv[2], 0);
    } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
	    && (length >= 2)) {
	if (argc == 2) {
	    code = Tk_ConfigureInfo(interp, Tk_MainWindow(interp),
		configSpecs, (char *) masterPtr, (char *) NULL, 0);
	} else if (argc == 3) {
	    code = Tk_ConfigureInfo(interp, Tk_MainWindow(interp),
		configSpecs, (char *) masterPtr, argv[2], 0);
	} else {
	    int i;
	    for (i=2; i<argc-2; i++) {
		length = strlen(argv[i]);
		if (strncmp(argv[i], "-window", length) == 0) {
		    Tcl_AppendResult(interp, "The -window option cannot ",
			"be changed.", (char *) NULL);
		    return TCL_ERROR;
		}
	    }
	    code = ImgCmpConfigureMaster(masterPtr, argc-2, argv+2,
		TK_CONFIG_ARGV_ONLY);
	}
	return code;
    } else if ((c == 'i') && (strncmp(argv[1], "itemconfigure", length)== 0)) {
	Tcl_AppendResult(interp, "unimplemented", NULL);
	return TCL_ERROR;
    } else if ((c == 'l') && (strncmp(argv[1], "lineconfigure", length)== 0)) {
	Tcl_AppendResult(interp, "unimplemented", NULL);
	return TCL_ERROR;
    } else {
	Tcl_AppendResult(interp, "bad option \"", argv[1],
	    "\": must be cget or configure", (char *) NULL);
	return TCL_ERROR;
    }
    return TCL_OK;
}

/*----------------------------------------------------------------------
 *
 *
 *----------------------------------------------------------------------
 */
CmpLine * 
AddNewLine(masterPtr, argc, argv)
    CmpMaster *masterPtr;
    int argc;			/* Number of arguments. */
    CONST84 char **argv;	/* Argument strings. */
{
    CmpLine * lPtr = (CmpLine *)ckalloc(sizeof(CmpLine));

    lPtr->masterPtr = masterPtr;
    lPtr->next = NULL;
    lPtr->itemHead = NULL;
    lPtr->itemTail = NULL;
    lPtr->padX   = 0;
    lPtr->padY   = 0;
    lPtr->width  = 1;
    lPtr->height = 1;

    lPtr->anchor = TK_ANCHOR_CENTER;

    if (Tk_ConfigureWidget(masterPtr->interp, masterPtr->tkwin,
	    lineConfigSpecs, argc, argv, (char *) lPtr, 
	    TK_CONFIG_ARGV_ONLY) != TCL_OK) {
	FreeLine(lPtr);
	return NULL;
    }

    /*
     * Append to the end of the master's lines
     */
    if (masterPtr->lineHead == NULL) {
	masterPtr->lineHead = masterPtr->lineTail = lPtr;
    } else {
	masterPtr->lineTail->next = lPtr;
	masterPtr->lineTail = lPtr;
    }

    return lPtr;
}

/*----------------------------------------------------------------------
 *
 *
 *----------------------------------------------------------------------
 */
CmpBitmapItem *
AddNewBitmap(masterPtr, line, argc, argv)
    CmpMaster *masterPtr;
    CmpLine *line;
    int argc;			/* Number of arguments. */
    CONST84 char **argv;	/* Argument strings. */
{
    CmpItemPtr p;
    XGCValues gcValues;

    p.bitmap = (CmpBitmapItem*) ckalloc(sizeof(CmpBitmapItem));
    p.bitmap->line = line;
    p.bitmap->next = NULL;
    p.bitmap->anchor = TK_ANCHOR_CENTER;
    p.bitmap->type = TYPE_BITMAP;
    p.bitmap->padX = 0;
    p.bitmap->padY = 0;
    p.bitmap->width = 0;
    p.bitmap->height = 0;
   
    p.bitmap->bitmap = None;
    p.bitmap->foreground = NULL;
    p.bitmap->background = NULL;
    p.bitmap->gc = None;

    if (Tk_ConfigureWidget(masterPtr->interp, masterPtr->tkwin,
	    bitmapConfigSpecs, argc, argv, (char *) p.bitmap, 
	    TK_CONFIG_ARGV_ONLY) != TCL_OK) {
	goto error;
    }

    /* Get the GC for the bitmap */
    if (p.bitmap->background) {
	gcValues.background = p.bitmap->background->pixel;
    } else {
	gcValues.background = Tk_3DBorderColor(masterPtr->background)->pixel;
    }
    if (p.bitmap->foreground) {
	gcValues.foreground = p.bitmap->foreground->pixel;
    } else {
	gcValues.foreground = masterPtr->foreground->pixel;
    }
    gcValues.graphics_exposures = False;
    p.bitmap->gc = Tk_GetGC(masterPtr->tkwin,
	 GCBackground|GCForeground|GCGraphicsExposures,
	 &gcValues);

    return p.bitmap;

  error:

    FreeItem(p);
    return NULL;
}

/*----------------------------------------------------------------------
 *
 *
 *----------------------------------------------------------------------
 */
CmpImageItem *
AddNewImage(masterPtr, line, argc, argv)
    CmpMaster *masterPtr;
    CmpLine *line;
    int argc;			/* Number of arguments. */
    CONST84 char **argv;	/* Argument strings. */
{
    CmpItemPtr p;


    p.image = (CmpImageItem*) ckalloc(sizeof(CmpImageItem));
    p.image->line = line;
    p.image->next = NULL;
    p.image->anchor = TK_ANCHOR_CENTER;
    p.image->type = TYPE_IMAGE;
    p.image->padX = 0;
    p.image->padY = 0;
    p.image->width = 0;
    p.image->height = 0;
   
    p.image->imageString = NULL;
    p.image->image = NULL;

    if (Tk_ConfigureWidget(masterPtr->interp, masterPtr->tkwin,
	    imageConfigSpecs, argc, argv, (char *) p.image, 
	    TK_CONFIG_ARGV_ONLY) != TCL_OK) {
	goto error;
    }

    /* Get the image */
    if (p.image->imageString != NULL) {
	p.image->image = Tk_GetImage(masterPtr->interp, masterPtr->tkwin,
	    p.image->imageString, ImageProc, (ClientData)p.image);
	if (p.image->image == NULL) {
	    goto error;
	}
    }

    return p.image;

  error:

    FreeItem(p);
    return NULL;
}

/*----------------------------------------------------------------------
 *
 *
 *----------------------------------------------------------------------
 */
CmpSpaceItem *
AddNewSpace(masterPtr, line, argc, argv)
    CmpMaster *masterPtr;
    CmpLine *line;
    int argc;			/* Number of arguments. */
    CONST84 char **argv;	/* Argument strings. */
{
    CmpItemPtr p;

    p.space = (CmpSpaceItem*) ckalloc(sizeof(CmpSpaceItem));
    p.space->line = line;
    p.space->next = NULL;
    p.space->anchor = TK_ANCHOR_CENTER;
    p.space->type = TYPE_SPACE;
    p.space->padX = 0;
    p.space->padY = 0;
    p.space->width = 0;
    p.space->height = 0;

    if (Tk_ConfigureWidget(masterPtr->interp, masterPtr->tkwin,
	spaceConfigSpecs, argc, argv, (char *)p.space, 
	TK_CONFIG_ARGV_ONLY) != TCL_OK) {
	goto error;
    }

    return p.space;

  error:

    FreeItem(p);
    return NULL;
}

/*----------------------------------------------------------------------
 *
 *
 *----------------------------------------------------------------------
 */
CmpTextItem *
AddNewText(masterPtr, line, argc, argv)
    CmpMaster *masterPtr;
    CmpLine *line;
    int argc;			/* Number of arguments. */
    CONST84 char **argv;	/* Argument strings. */
{
    CmpItemPtr p;
    XGCValues gcValues;

    p.text = (CmpTextItem*) ckalloc(sizeof(CmpTextItem));
    p.text->line = line;
    p.text->next = NULL;
    p.text->anchor = TK_ANCHOR_CENTER;
    p.text->type = TYPE_TEXT;
    p.text->padX = 0;
    p.text->padY = 0;
    p.text->width = 0;
    p.text->height = 0;
   
    p.text->text = NULL;
    p.text->numChars = 0;
    p.text->justify = TK_JUSTIFY_CENTER;
    p.text->underline = -1;
    p.text->wrapLength = 0;

    p.text->foreground = NULL;
    p.text->font = NULL;
    p.text->gc = None;

    if (Tk_ConfigureWidget(masterPtr->interp, masterPtr->tkwin,
	textConfigSpecs, argc, argv, (char *) p.text, 
	TK_CONFIG_ARGV_ONLY) != TCL_OK) {

	goto error;
    }

    /* Get the GC for the text */
    if (p.text->foreground) {
	gcValues.foreground = p.text->foreground->pixel;
    } else {
	gcValues.foreground = masterPtr->foreground->pixel;
    }
    if (p.text->font) {
	gcValues.font = TixFontId(p.text->font);
    } else {
	gcValues.font = TixFontId(masterPtr->font);
    }
    gcValues.graphics_exposures = False;
    p.text->gc = Tk_GetGC(masterPtr->tkwin,
	 GCFont|GCForeground|GCGraphicsExposures,
	 &gcValues);

    return p.text;

  error:

    FreeItem(p);
    return NULL;
}

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpGet --
 *
 *	This procedure is called for each use of a bitmap image in a
 *	widget.
 *
 * Results:
 *	The return value is a token for the instance, which is passed
 *	back to us in calls to ImgCmpDisplay and ImgCmpFree.
 *
 * Side effects:
 *	A data structure is set up for the instance (or, an existing
 *	instance is re-used for the new one).
 *
 *----------------------------------------------------------------------
 */
static ClientData
ImgCmpGet(tkwin, masterData)
    Tk_Window tkwin;		/* Window in which the instance will be
				 * used. */
    ClientData masterData;	/* Pointer to our master structure for the
				 * image. */
{
    CmpMaster *masterPtr = (CmpMaster *)masterData;
    
    if (tkwin == masterPtr->tkwin) {
	return masterData;
    }

    Tcl_AppendResult(masterPtr->interp, 
	"Image \"",
	Tk_NameOfImage(masterPtr->tkMaster),
	"\" can only be assigned to window \"",
	Tk_PathName(masterPtr->tkwin), "\"", NULL);
    Tcl_AddErrorInfo(masterPtr->interp, "\n    (while configuring image \"");
    Tcl_AddErrorInfo(masterPtr->interp, Tk_NameOfImage(masterPtr->tkMaster));
    Tcl_AddErrorInfo(masterPtr->interp, "\")");
    Tk_BackgroundError(masterPtr->interp);

    return NULL;
}

static void
CalculateMasterSize(clientData)
    ClientData clientData;
{
    CmpMaster *masterPtr = (CmpMaster *)clientData;
    CmpLine *lPtr;
    CmpItemPtr p;

    masterPtr->width  = 0;
    masterPtr->height = 0;

    for (lPtr = masterPtr->lineHead; lPtr; lPtr=lPtr->next) {
	lPtr->width  = 0;
	lPtr->height = 0;
	for (p.item = lPtr->itemHead; p.item; p.item=p.item->next) {

	    switch (p.item->type) {
	      case TYPE_IMAGE:
		Tk_SizeOfImage(p.image->image, 
		    &p.image->width, &p.image->height);
		break;

	      case TYPE_SPACE:
		/* Do nothing */
		break;

	      case TYPE_TEXT:
		{
		    TixFont font;

		    if (p.text->text == NULL) {
			break;
		    }
		  
		    if (p.text->font) {
			font = p.text->font;
		    } else {
			font = masterPtr->font;
		    }
		    
		    p.text->numChars = -1;
		    TixComputeTextGeometry(font, p.text->text,
			p.text->numChars,
			p.text->wrapLength,
			&p.text->width, &p.text->height);
	        }
		break;
		
	      case TYPE_BITMAP:
		Tk_SizeOfBitmap(Tk_Display(masterPtr->tkwin),
		    p.bitmap->bitmap, &p.bitmap->width,
		    &p.bitmap->height);
		break;

	      case TYPE_WIDGET:

		
		break;
	    }
	    p.item->width  += 2*p.item->padX;
	    p.item->height += 2*p.item->padY;

	    lPtr->width += p.item->width;
	    if (lPtr->height < p.item->height) {
		lPtr->height = p.item->height;
	    }
	}
	lPtr->width  += 2*lPtr->padX;
	lPtr->height += 2*lPtr->padY;

	if (masterPtr->width < lPtr->width) {
	    masterPtr->width = lPtr->width;
	}
	masterPtr->height += lPtr->height;
    }
    masterPtr->width  += 2*masterPtr->padX + 2*masterPtr->borderWidth;
    masterPtr->height += 2*masterPtr->padY + 2*masterPtr->borderWidth;

    Tk_ImageChanged(masterPtr->tkMaster, 0, 0, masterPtr->width,
	masterPtr->height, masterPtr->width, masterPtr->height);
    masterPtr->changing = 0;
}

static void
ChangeImageWhenIdle(masterPtr)
    CmpMaster *masterPtr;
{
    if (!masterPtr->changing) {
	masterPtr->changing = 1;
	Tk_DoWhenIdle(CalculateMasterSize, (ClientData)masterPtr);
    }
}

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpDisplay --
 *
 *	This procedure is invoked to draw a bitmap image.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	A portion of the image gets rendered in a pixmap or window.
 *
 *----------------------------------------------------------------------
 */
static void
ImgCmpDisplay(clientData, display, drawable, imageX, imageY, width,
	height, drawableX, drawableY)
    ClientData clientData;	/* Pointer to CmpInstance structure for
				 * for instance to be displayed. */
    Display *display;		/* Display on which to draw image. */
    Drawable drawable;		/* Pixmap or window in which to draw image. */
    int imageX, imageY;		/* Upper-left corner of region within image
				 * to draw. */
    int width, height;		/* Dimensions of region within image to draw.*/
    int drawableX, drawableY;	/* Coordinates within drawable that
				 * correspond to imageX and imageY. */
{
    CmpMaster * masterPtr = (CmpMaster*)clientData;
    CmpLine *lPtr;
    CmpItemPtr p;
    int dx, dy, extraX;

    if (masterPtr == NULL) {
	/* attempting to draw into a invalid window (can only be drawn into
	 * the original window set by the -window option */
	return;
    }

    if (masterPtr->showBackground) {
	Tk_Fill3DRectangle(masterPtr->tkwin, drawable, 
	    masterPtr->background,
	    drawableX + masterPtr->padX - imageX,
	    drawableY + masterPtr->padY - imageY,
	    masterPtr->width  - 2*masterPtr->padX,
	    masterPtr->height - 2*masterPtr->padY,
	    masterPtr->borderWidth, masterPtr->relief);
    }

    /* ToDo: Set the clipping region according to the imageX,Y, and 
     * width, height */
    dy = drawableY + masterPtr->padY + masterPtr->borderWidth - imageY;

    for (lPtr = masterPtr->lineHead; lPtr; lPtr=lPtr->next) {
	dx = drawableX + masterPtr->padX - imageX;
	dx += lPtr->padX;
	dy += lPtr->padY;

	extraX = masterPtr->width - 2*masterPtr->padX - lPtr->width;
	switch (lPtr->anchor) {
	  case TK_ANCHOR_SW: case TK_ANCHOR_W: case TK_ANCHOR_NW:
	    extraX = 0;
	    break;
	  case TK_ANCHOR_N: case TK_ANCHOR_CENTER: case TK_ANCHOR_S:
	    extraX /= 2;
	    break;
	  case TK_ANCHOR_SE: case TK_ANCHOR_E: case TK_ANCHOR_NE:
	    break;
	}
	dx += extraX;

	for (p.item = lPtr->itemHead; p.item; p.item=p.item->next) {
	    int extraY;
	    dx += p.item->padX;

	    extraY = lPtr->height - 2*lPtr->padY - p.item->height;
	    switch (p.item->anchor) {
	      case TK_ANCHOR_SW: case TK_ANCHOR_S: case TK_ANCHOR_SE:
		break;
	      case TK_ANCHOR_W: case TK_ANCHOR_CENTER: case TK_ANCHOR_E:
		extraY /= 2;
		break;
	      case TK_ANCHOR_NW: case TK_ANCHOR_N: case TK_ANCHOR_NE:
		extraY = 0;
		break;
	    }

	    switch (p.item->type) {
	      case TYPE_IMAGE:
		Tk_RedrawImage(p.image->image, 0, 0, 
		    p.image->width  - 2*p.item->padX,
		    p.image->height - 2*p.item->padY,
		    drawable, dx, dy+extraY);
		break;

	      case TYPE_SPACE:
		/* Do nothing */
		break;

	      case TYPE_TEXT:
		{
		    TixFont font;

		    if (p.text->text == NULL) {
			break;
		    }
		  
		    if (p.text->font) {
			font = p.text->font;
		    } else {
			font = masterPtr->font;
		    }

		    TixDisplayText(Tk_Display(masterPtr->tkwin), drawable,
			font, p.text->text, p.text->numChars,
			dx, dy+extraY,	    
			p.text->width - 2*p.item->padX,
			p.text->justify,
			p.text->underline,
			p.text->gc);
	        }
		break;
		
	      case TYPE_BITMAP:
		XCopyPlane(Tk_Display(masterPtr->tkwin), p.bitmap->bitmap,
		    drawable, p.bitmap->gc, 0, 0,
		    (unsigned) p.bitmap->width  - 2*p.item->padX,
		    (unsigned) p.bitmap->height - 2*p.item->padY,
		    dx, dy+extraY, 1);

		break;

	      case TYPE_WIDGET:

		
		break;
	    }
	    dx += p.item->width - p.item->padX;
	}
	dy += lPtr->height - lPtr->padY;
    }
}

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpFree --
 *
 *	This procedure is called when a widget ceases to use a
 *	particular instance of an image.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Internal data structures get cleaned up.
 *
 * Arguments:
 *  clientData -- Pointer to CmpInstance for instance to be displayed
 *  display    -- Display containing image window
 *
 *----------------------------------------------------------------------
 */

static void
ImgCmpFree(clientData, display)
    ClientData clientData;
    Display *display;
{
    /*
     * Since one compound image can only be used in one window, when
     * that window is deleted, this image is now useless and should be
     * deleted as well
     */
}

static void FreeLine(lPtr)
    CmpLine * lPtr;
{
    Tk_FreeOptions(lineConfigSpecs, (char *)lPtr,
	Tk_Display(lPtr->masterPtr->tkwin), 0);
    ckfree((char *) lPtr);
}

static void FreeItem(p)
    CmpItemPtr p;
{
    switch (p.item->type) {
      case TYPE_IMAGE:
	if (p.image->image) {
	    Tk_FreeImage(p.image->image);
	}
	Tk_FreeOptions(imageConfigSpecs, (char *)p.image, 
	    Tk_Display(p.item->line->masterPtr->tkwin), 0);
	break;

      case TYPE_SPACE:
	Tk_FreeOptions(spaceConfigSpecs, (char *)p.space, 
	    Tk_Display(p.item->line->masterPtr->tkwin), 0);
	break;

      case TYPE_TEXT:
	if (p.text->gc != None) {
	    Tk_FreeGC(Tk_Display(p.text->line->masterPtr->tkwin),
		p.text->gc);
	}
	Tk_FreeOptions(textConfigSpecs, (char *)p.text, 
	    Tk_Display(p.item->line->masterPtr->tkwin), 0);
	break;

      case TYPE_BITMAP:
	if (p.bitmap->gc != None) {
	    Tk_FreeGC(Tk_Display(p.bitmap->line->masterPtr->tkwin),
		p.bitmap->gc);
	}
	Tk_FreeOptions(bitmapConfigSpecs, (char *)p.bitmap, 
	    Tk_Display(p.item->line->masterPtr->tkwin), 0);
	break;

      case TYPE_WIDGET:
	break;
    }
    ckfree((char *) p.item);
}

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpFreeResources --
 *
 *	This procedure frees resources associated with the window
 *	specified with the -window arg to "image create compound ..."
 *
 *	This procedure must be called from both ImgCmpDelete and from
 *	the destroy notifier CmpEventProc() (for the -window window)
 * 	in order to ensure resources are freed under all circumstances.
 *
 *	The way Tk shuts down windows (in tkWindow.c) does not allow
 *	the destroy notifier CmpEventProc() to just delete the TCL
 *	command associated with the image.  The destroy notifier for
 *	the TCL command calls Tk_DeleteImage().  This command has no
 *	effect when Tk is shutting down (see tkImage.c) since the main
 *	window has already been removed from the main window list. As
 *	a result, ImgCmpDelete() doesn't get called when we want it to.
 *
 *	Later, tkWindow.c will call tkDeleteAllImages() to delete all 
 *	images, but by then the window referred to by masterPtr->tkwin
 *	is gone.  ImgCmdDelete cannot free the resources.
 * 
 *	By allowing CmpEventProc() to do most of the cleanup, we avoid
 *	this situation.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Resources associated with the image get freed, new image command
 *	is removed from interpreter.
 *
 *----------------------------------------------------------------------
 */
static void
ImgCmpFreeResources(masterData)
    ClientData masterData;	/* Pointer to CmpMaster structure for
				 * image.  Must not have any more instances. */
{
    CmpMaster *masterPtr = (CmpMaster *) masterData;
    CmpLine * lPtr;
    CmpItemPtr p;

    if (masterPtr->tkwin == NULL) {
        return ;
    }

    Tk_Preserve((ClientData) masterPtr);

    if (masterPtr->isDeleted == 0) {
        masterPtr->isDeleted = 1;

        Tk_DeleteEventHandler(masterPtr->tkwin,
		StructureNotifyMask, 
		CmpEventProc, (ClientData)masterPtr);
        for (lPtr=masterPtr->lineHead; lPtr;) {
            CmpLine * toDelete = lPtr;
            lPtr = lPtr->next;
		    
            for (p.item=toDelete->itemHead; p.item;) {
                CmpItemPtr toDelete;
			    
                toDelete.item = p.item;
                p.item=p.item->next;
			    
                FreeItem(toDelete);
            }
            FreeLine(toDelete);
        }

        if (masterPtr->changing) {
            Tk_CancelIdleCall(CalculateMasterSize, (ClientData)masterPtr);
        }
        masterPtr->tkMaster = NULL;

        if (masterPtr->imageCmd != NULL) {
            CONST84 char * cmd = Tcl_GetCommandName(masterPtr->interp,
                masterPtr->imageCmd);
            masterPtr->imageCmd = NULL;
            Tcl_DeleteCommand(masterPtr->interp, cmd);
        }

        if (masterPtr->gc != None) {
            Tk_FreeGC(masterPtr->display, masterPtr->gc);
        }
	    
        Tk_FreeOptions(configSpecs, (char *) masterPtr, masterPtr->display, 0);
    }

    Tk_Release((ClientData) masterPtr);
}

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpDelete --
 *
 *	This procedure is called by the image code to delete the
 *	master structure for an image.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Resources associated with the image get freed.
 *
 *----------------------------------------------------------------------
 */
static void
ImgCmpDelete(masterData)
    ClientData masterData;	/* Pointer to CmpMaster structure for
				 * image.  Must not have any more instances. */
{
    CmpMaster *masterPtr = (CmpMaster *) masterData;

    ImgCmpFreeResources(masterData);
    ckfree((char *) masterPtr);
}

/*
 *----------------------------------------------------------------------
 *
 * ImgCmpCmdDeletedProc --
 *
 *	This procedure is invoked when the image command for an image
 *	is deleted.  It deletes the image.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The image is deleted.
 *
 *----------------------------------------------------------------------
 */
static void
ImgCmpCmdDeletedProc(clientData)
    ClientData clientData;	/* Pointer to CmpMaster structure for
				 * image. */
{
    CmpMaster *masterPtr = (CmpMaster *) clientData;

    masterPtr->imageCmd = NULL;

    if (masterPtr->tkMaster != NULL) {
	    Tk_DeleteImage(masterPtr->interp, 
			   Tk_NameOfImage(masterPtr->tkMaster));
    }
}
/*
 *----------------------------------------------------------------------
 *
 * ImageProc --
 *
 *	This procedure is invoked by the image code whenever the manager
 *	for an image does something that affects the size or contents
 *	of an image displayed in a button.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Arranges for the HList to get redisplayed.
 *
 *----------------------------------------------------------------------
 */
static void
ImageProc(clientData, x, y, width, height, imgWidth, imgHeight)
    ClientData clientData;		/* Pointer to widget record. */
    int x, y;				/* Upper left pixel (within image)
					 * that must be redisplayed. */
    int width, height;			/* Dimensions of area to redisplay
					 * (may be <= 0). */
    int imgWidth, imgHeight;		/* New dimensions of image. */
{
    CmpItemPtr p;

    p.image = (CmpImageItem *)clientData;

    ChangeImageWhenIdle(p.item->line->masterPtr);
}

/*
 *--------------------------------------------------------------
 *
 * CmpEventProc --
 *
 *	This procedure is invoked by the Tk dispatcher for various
 *	events on the window that employs this compound image.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	When the window gets deleted, internal structures get
 *	cleaned up. 
 *
 *--------------------------------------------------------------
 */

static void
CmpEventProc(clientData, eventPtr)
    ClientData clientData;	/* Information about window. */
    XEvent *eventPtr;		/* Information about event. */
{
    /* CmpMaster *masterPtr = (CmpMaster *)clientData; */

    if (eventPtr->type == DestroyNotify) {
	    ImgCmpFreeResources(clientData);
    }
}