summaryrefslogtreecommitdiffstats
path: root/tk8.6/generic/tkOldConfig.c
blob: 920d93e53d3285db580b089020016059d9c062dc (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
/*
 * tkOldConfig.c --
 *
 *	This file contains the Tk_ConfigureWidget function. THIS FILE IS HERE
 *	FOR BACKWARD COMPATIBILITY; THE NEW CONFIGURATION PACKAGE SHOULD BE
 *	USED FOR NEW PROJECTS.
 *
 * Copyright (c) 1990-1994 The Regents of the University of California.
 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 */

#include "tkInt.h"

/*
 * Values for "flags" field of Tk_ConfigSpec structures. Be sure to coordinate
 * these values with those defined in tk.h (TK_CONFIG_COLOR_ONLY, etc.) There
 * must not be overlap!
 *
 * INIT -		Non-zero means (char *) things have been converted to
 *			Tk_Uid's.
 */

#define INIT		0x20

/*
 * Forward declarations for functions defined later in this file:
 */

static int		DoConfig(Tcl_Interp *interp, Tk_Window tkwin,
			    Tk_ConfigSpec *specPtr, Tk_Uid value,
			    int valueIsUid, char *widgRec);
static Tk_ConfigSpec *	FindConfigSpec(Tcl_Interp *interp,
			    Tk_ConfigSpec *specs, const char *argvName,
			    int needFlags, int hateFlags);
static char *		FormatConfigInfo(Tcl_Interp *interp, Tk_Window tkwin,
			    const Tk_ConfigSpec *specPtr, char *widgRec);
static const char *	FormatConfigValue(Tcl_Interp *interp, Tk_Window tkwin,
			    const Tk_ConfigSpec *specPtr, char *widgRec,
			    char *buffer, Tcl_FreeProc **freeProcPtr);
static Tk_ConfigSpec *	GetCachedSpecs(Tcl_Interp *interp,
			    const Tk_ConfigSpec *staticSpecs);
static void		DeleteSpecCacheTable(ClientData clientData,
			    Tcl_Interp *interp);

/*
 *--------------------------------------------------------------
 *
 * Tk_ConfigureWidget --
 *
 *	Process command-line options and database options to fill in fields of
 *	a widget record with resources and other parameters.
 *
 * Results:
 *	A standard Tcl return value. In case of an error, the interp's result
 *	will hold an error message.
 *
 * Side effects:
 *	The fields of widgRec get filled in with information from argc/argv
 *	and the option database. Old information in widgRec's fields gets
 *	recycled. A copy of the spec-table is taken with (some of) the char*
 *	fields converted into Tk_Uid fields; this copy will be released when
 *	the interpreter terminates.
 *
 *--------------------------------------------------------------
 */

int
Tk_ConfigureWidget(
    Tcl_Interp *interp,		/* Interpreter for error reporting. */
    Tk_Window tkwin,		/* Window containing widget (needed to set up
				 * X resources). */
    const Tk_ConfigSpec *specs,	/* Describes legal options. */
    int argc,			/* Number of elements in argv. */
    const char **argv,		/* Command-line options. */
    char *widgRec,		/* Record whose fields are to be modified.
				 * Values must be properly initialized. */
    int flags)			/* Used to specify additional flags that must
				 * be present in config specs for them to be
				 * considered. Also, may have
				 * TK_CONFIG_ARGV_ONLY set. */
{
    register Tk_ConfigSpec *specPtr, *staticSpecs;
    Tk_Uid value;		/* Value of option from database. */
    int needFlags;		/* Specs must contain this set of flags or
				 * else they are not considered. */
    int hateFlags;		/* If a spec contains any bits here, it's not
				 * considered. */

    if (tkwin == NULL) {
	/*
	 * Either we're not really in Tk, or the main window was destroyed and
	 * we're on our way out of the application
	 */

	Tcl_SetObjResult(interp, Tcl_NewStringObj("NULL main window", -1));
	Tcl_SetErrorCode(interp, "TK", "NO_MAIN_WINDOW", NULL);
	return TCL_ERROR;
    }

    needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
    if (Tk_Depth(tkwin) <= 1) {
	hateFlags = TK_CONFIG_COLOR_ONLY;
    } else {
	hateFlags = TK_CONFIG_MONO_ONLY;
    }

    /*
     * Get the build of the config for this interpreter.
     */

    staticSpecs = GetCachedSpecs(interp, specs);

    for (specPtr = staticSpecs; specPtr->type != TK_CONFIG_END; specPtr++) {
	specPtr->specFlags &= ~TK_CONFIG_OPTION_SPECIFIED;
    }

    /*
     * Pass one: scan through all of the arguments, processing those that
     * match entries in the specs.
     */

    for ( ; argc > 0; argc -= 2, argv += 2) {
	const char *arg;

	if (flags & TK_CONFIG_OBJS) {
	    arg = Tcl_GetString((Tcl_Obj *) *argv);
	} else {
	    arg = *argv;
	}
	specPtr = FindConfigSpec(interp, staticSpecs, arg, needFlags, hateFlags);
	if (specPtr == NULL) {
	    return TCL_ERROR;
	}

	/*
	 * Process the entry.
	 */

	if (argc < 2) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "value for \"%s\" missing", arg));
	    Tcl_SetErrorCode(interp, "TK", "VALUE_MISSING", NULL);
	    return TCL_ERROR;
	}
	if (flags & TK_CONFIG_OBJS) {
	    arg = Tcl_GetString((Tcl_Obj *) argv[1]);
	} else {
	    arg = argv[1];
	}
	if (DoConfig(interp, tkwin, specPtr, arg, 0, widgRec) != TCL_OK) {
	    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
		    "\n    (processing \"%.40s\" option)",specPtr->argvName));
	    return TCL_ERROR;
	}
	if (!(flags & TK_CONFIG_ARGV_ONLY)) {
	    specPtr->specFlags |= TK_CONFIG_OPTION_SPECIFIED;
	}
    }

    /*
     * Pass two: scan through all of the specs again; if no command-line
     * argument matched a spec, then check for info in the option database.
     * If there was nothing in the database, then use the default.
     */

    if (!(flags & TK_CONFIG_ARGV_ONLY)) {
	for (specPtr = staticSpecs; specPtr->type != TK_CONFIG_END; specPtr++) {
	    if ((specPtr->specFlags & TK_CONFIG_OPTION_SPECIFIED)
		    || (specPtr->argvName == NULL)
		    || (specPtr->type == TK_CONFIG_SYNONYM)) {
		continue;
	    }
	    if (((specPtr->specFlags & needFlags) != needFlags)
		    || (specPtr->specFlags & hateFlags)) {
		continue;
	    }
	    value = NULL;
	    if (specPtr->dbName != NULL) {
		value = Tk_GetOption(tkwin, specPtr->dbName, specPtr->dbClass);
	    }
	    if (value != NULL) {
		if (DoConfig(interp, tkwin, specPtr, value, 1, widgRec) !=
			TCL_OK) {
		    Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
			    "\n    (%s \"%.50s\" in widget \"%.50s\")",
			    "database entry for", specPtr->dbName,
			    Tk_PathName(tkwin)));
		    return TCL_ERROR;
		}
	    } else {
		if (specPtr->defValue != NULL) {
		    value = Tk_GetUid(specPtr->defValue);
		} else {
		    value = NULL;
		}
		if ((value != NULL) && !(specPtr->specFlags
			& TK_CONFIG_DONT_SET_DEFAULT)) {
		    if (DoConfig(interp, tkwin, specPtr, value, 1, widgRec) !=
			    TCL_OK) {
			Tcl_AppendObjToErrorInfo(interp, Tcl_ObjPrintf(
				"\n    (%s \"%.50s\" in widget \"%.50s\")",
				"default value for", specPtr->dbName,
				Tk_PathName(tkwin)));
			return TCL_ERROR;
		    }
		}
	    }
	}
    }

    return TCL_OK;
}

/*
 *--------------------------------------------------------------
 *
 * FindConfigSpec --
 *
 *	Search through a table of configuration specs, looking for one that
 *	matches a given argvName.
 *
 * Results:
 *	The return value is a pointer to the matching entry, or NULL if
 *	nothing matched. In that case an error message is left in the interp's
 *	result.
 *
 * Side effects:
 *	None.
 *
 *--------------------------------------------------------------
 */

static Tk_ConfigSpec *
FindConfigSpec(
    Tcl_Interp *interp,		/* Used for reporting errors. */
    Tk_ConfigSpec *specs,	/* Pointer to table of configuration
				 * specifications for a widget. */
    const char *argvName,	/* Name (suitable for use in a "config"
				 * command) identifying particular option. */
    int needFlags,		/* Flags that must be present in matching
				 * entry. */
    int hateFlags)		/* Flags that must NOT be present in matching
				 * entry. */
{
    register Tk_ConfigSpec *specPtr;
    register char c;		/* First character of current argument. */
    Tk_ConfigSpec *matchPtr;	/* Matching spec, or NULL. */
    size_t length;

    c = argvName[1];
    length = strlen(argvName);
    matchPtr = NULL;
    for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
	if (specPtr->argvName == NULL) {
	    continue;
	}
	if ((specPtr->argvName[1] != c)
		|| (strncmp(specPtr->argvName, argvName, length) != 0)) {
	    continue;
	}
	if (((specPtr->specFlags & needFlags) != needFlags)
		|| (specPtr->specFlags & hateFlags)) {
	    continue;
	}
	if (specPtr->argvName[length] == 0) {
	    matchPtr = specPtr;
	    goto gotMatch;
	}
	if (matchPtr != NULL) {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "ambiguous option \"%s\"", argvName));
	    Tcl_SetErrorCode(interp, "TK", "LOOKUP", "OPTION", argvName,NULL);
	    return NULL;
	}
	matchPtr = specPtr;
    }

    if (matchPtr == NULL) {
	Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		"unknown option \"%s\"", argvName));
	Tcl_SetErrorCode(interp, "TK", "LOOKUP", "OPTION", argvName, NULL);
	return NULL;
    }

    /*
     * Found a matching entry. If it's a synonym, then find the entry that
     * it's a synonym for.
     */

  gotMatch:
    specPtr = matchPtr;
    if (specPtr->type == TK_CONFIG_SYNONYM) {
	for (specPtr = specs; ; specPtr++) {
	    if (specPtr->type == TK_CONFIG_END) {
		Tcl_SetObjResult(interp, Tcl_ObjPrintf(
			"couldn't find synonym for option \"%s\"",
			argvName));
		Tcl_SetErrorCode(interp, "TK", "LOOKUP", "OPTION", argvName,
			NULL);
		return NULL;
	    }
	    if ((specPtr->dbName == matchPtr->dbName)
		    && (specPtr->type != TK_CONFIG_SYNONYM)
		    && ((specPtr->specFlags & needFlags) == needFlags)
		    && !(specPtr->specFlags & hateFlags)) {
		break;
	    }
	}
    }
    return specPtr;
}

/*
 *--------------------------------------------------------------
 *
 * DoConfig --
 *
 *	This function applies a single configuration option to a widget
 *	record.
 *
 * Results:
 *	A standard Tcl return value.
 *
 * Side effects:
 *	WidgRec is modified as indicated by specPtr and value. The old value
 *	is recycled, if that is appropriate for the value type.
 *
 *--------------------------------------------------------------
 */

static int
DoConfig(
    Tcl_Interp *interp,		/* Interpreter for error reporting. */
    Tk_Window tkwin,		/* Window containing widget (needed to set up
				 * X resources). */
    Tk_ConfigSpec *specPtr,	/* Specifier to apply. */
    Tk_Uid value,		/* Value to use to fill in widgRec. */
    int valueIsUid,		/* Non-zero means value is a Tk_Uid; zero
				 * means it's an ordinary string. */
    char *widgRec)		/* Record whose fields are to be modified.
				 * Values must be properly initialized. */
{
    char *ptr;
    Tk_Uid uid;
    int nullValue;

    nullValue = 0;
    if ((*value == 0) && (specPtr->specFlags & TK_CONFIG_NULL_OK)) {
	nullValue = 1;
    }

    do {
	ptr = widgRec + specPtr->offset;
	switch (specPtr->type) {
	case TK_CONFIG_BOOLEAN:
	    if (Tcl_GetBoolean(interp, value, (int *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_INT:
	    if (Tcl_GetInt(interp, value, (int *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_DOUBLE:
	    if (Tcl_GetDouble(interp, value, (double *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_STRING: {
	    char *oldStr, *newStr;

	    if (nullValue) {
		newStr = NULL;
	    } else {
		newStr = ckalloc(strlen(value) + 1);
		strcpy(newStr, value);
	    }
	    oldStr = *((char **) ptr);
	    if (oldStr != NULL) {
		ckfree(oldStr);
	    }
	    *((char **) ptr) = newStr;
	    break;
	}
	case TK_CONFIG_UID:
	    if (nullValue) {
		*((Tk_Uid *) ptr) = NULL;
	    } else {
		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
		*((Tk_Uid *) ptr) = uid;
	    }
	    break;
	case TK_CONFIG_COLOR: {
	    XColor *newPtr, *oldPtr;

	    if (nullValue) {
		newPtr = NULL;
	    } else {
		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
		newPtr = Tk_GetColor(interp, tkwin, uid);
		if (newPtr == NULL) {
		    return TCL_ERROR;
		}
	    }
	    oldPtr = *((XColor **) ptr);
	    if (oldPtr != NULL) {
		Tk_FreeColor(oldPtr);
	    }
	    *((XColor **) ptr) = newPtr;
	    break;
	}
	case TK_CONFIG_FONT: {
	    Tk_Font newFont;

	    if (nullValue) {
		newFont = NULL;
	    } else {
		newFont = Tk_GetFont(interp, tkwin, value);
		if (newFont == NULL) {
		    return TCL_ERROR;
		}
	    }
	    Tk_FreeFont(*((Tk_Font *) ptr));
	    *((Tk_Font *) ptr) = newFont;
	    break;
	}
	case TK_CONFIG_BITMAP: {
	    Pixmap newBmp, oldBmp;

	    if (nullValue) {
		newBmp = None;
	    } else {
		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
		newBmp = Tk_GetBitmap(interp, tkwin, uid);
		if (newBmp == None) {
		    return TCL_ERROR;
		}
	    }
	    oldBmp = *((Pixmap *) ptr);
	    if (oldBmp != None) {
		Tk_FreeBitmap(Tk_Display(tkwin), oldBmp);
	    }
	    *((Pixmap *) ptr) = newBmp;
	    break;
	}
	case TK_CONFIG_BORDER: {
	    Tk_3DBorder newBorder, oldBorder;

	    if (nullValue) {
		newBorder = NULL;
	    } else {
		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
		newBorder = Tk_Get3DBorder(interp, tkwin, uid);
		if (newBorder == NULL) {
		    return TCL_ERROR;
		}
	    }
	    oldBorder = *((Tk_3DBorder *) ptr);
	    if (oldBorder != NULL) {
		Tk_Free3DBorder(oldBorder);
	    }
	    *((Tk_3DBorder *) ptr) = newBorder;
	    break;
	}
	case TK_CONFIG_RELIEF:
	    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
	    if (Tk_GetRelief(interp, uid, (int *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_CURSOR:
	case TK_CONFIG_ACTIVE_CURSOR: {
	    Tk_Cursor newCursor, oldCursor;

	    if (nullValue) {
		newCursor = None;
	    } else {
		uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
		newCursor = Tk_GetCursor(interp, tkwin, uid);
		if (newCursor == None) {
		    return TCL_ERROR;
		}
	    }
	    oldCursor = *((Tk_Cursor *) ptr);
	    if (oldCursor != None) {
		Tk_FreeCursor(Tk_Display(tkwin), oldCursor);
	    }
	    *((Tk_Cursor *) ptr) = newCursor;
	    if (specPtr->type == TK_CONFIG_ACTIVE_CURSOR) {
		Tk_DefineCursor(tkwin, newCursor);
	    }
	    break;
	}
	case TK_CONFIG_JUSTIFY:
	    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
	    if (Tk_GetJustify(interp, uid, (Tk_Justify *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_ANCHOR:
	    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
	    if (Tk_GetAnchor(interp, uid, (Tk_Anchor *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_CAP_STYLE:
	    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
	    if (Tk_GetCapStyle(interp, uid, (int *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_JOIN_STYLE:
	    uid = valueIsUid ? (Tk_Uid) value : Tk_GetUid(value);
	    if (Tk_GetJoinStyle(interp, uid, (int *) ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_PIXELS:
	    if (Tk_GetPixels(interp, tkwin, value, (int *) ptr)
		!= TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_MM:
	    if (Tk_GetScreenMM(interp, tkwin, value, (double*)ptr) != TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	case TK_CONFIG_WINDOW: {
	    Tk_Window tkwin2;

	    if (nullValue) {
		tkwin2 = NULL;
	    } else {
		tkwin2 = Tk_NameToWindow(interp, value, tkwin);
		if (tkwin2 == NULL) {
		    return TCL_ERROR;
		}
	    }
	    *((Tk_Window *) ptr) = tkwin2;
	    break;
	}
	case TK_CONFIG_CUSTOM:
	    if (specPtr->customPtr->parseProc(specPtr->customPtr->clientData,
		    interp, tkwin, value, widgRec, specPtr->offset)!=TCL_OK) {
		return TCL_ERROR;
	    }
	    break;
	default:
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		    "bad config table: unknown type %d", specPtr->type));
	    Tcl_SetErrorCode(interp, "TK", "BAD_CONFIG", NULL);
	    return TCL_ERROR;
	}
	specPtr++;
    } while ((specPtr->argvName == NULL) && (specPtr->type != TK_CONFIG_END));
    return TCL_OK;
}

/*
 *--------------------------------------------------------------
 *
 * Tk_ConfigureInfo --
 *
 *	Return information about the configuration options for a window, and
 *	their current values.
 *
 * Results:
 *	Always returns TCL_OK. The interp's result will be modified hold a
 *	description of either a single configuration option available for
 *	"widgRec" via "specs", or all the configuration options available. In
 *	the "all" case, the result will available for "widgRec" via "specs".
 *	The result will be a list, each of whose entries describes one option.
 *	Each entry will itself be a list containing the option's name for use
 *	on command lines, database name, database class, default value, and
 *	current value (empty string if none). For options that are synonyms,
 *	the list will contain only two values: name and synonym name. If the
 *	"name" argument is non-NULL, then the only information returned is
 *	that for the named argument (i.e. the corresponding entry in the
 *	overall list is returned).
 *
 * Side effects:
 *	None.
 *
 *--------------------------------------------------------------
 */

int
Tk_ConfigureInfo(
    Tcl_Interp *interp,		/* Interpreter for error reporting. */
    Tk_Window tkwin,		/* Window corresponding to widgRec. */
    const Tk_ConfigSpec *specs, /* Describes legal options. */
    char *widgRec,		/* Record whose fields contain current values
				 * for options. */
    const char *argvName,	/* If non-NULL, indicates a single option
				 * whose info is to be returned. Otherwise
				 * info is returned for all options. */
    int flags)			/* Used to specify additional flags that must
				 * be present in config specs for them to be
				 * considered. */
{
    register Tk_ConfigSpec *specPtr, *staticSpecs;
    int needFlags, hateFlags;
    char *list;
    const char *leader = "{";

    needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
    if (Tk_Depth(tkwin) <= 1) {
	hateFlags = TK_CONFIG_COLOR_ONLY;
    } else {
	hateFlags = TK_CONFIG_MONO_ONLY;
    }

    /*
     * Get the build of the config for this interpreter.
     */

    staticSpecs = GetCachedSpecs(interp, specs);

    /*
     * If information is only wanted for a single configuration spec, then
     * handle that one spec specially.
     */

    Tcl_ResetResult(interp);
    if (argvName != NULL) {
	specPtr = FindConfigSpec(interp, staticSpecs, argvName, needFlags,
		hateFlags);
	if (specPtr == NULL) {
	    return TCL_ERROR;
	}
	list = FormatConfigInfo(interp, tkwin, specPtr, widgRec);
	Tcl_SetObjResult(interp, Tcl_NewStringObj(list, -1));
	ckfree(list);
	return TCL_OK;
    }

    /*
     * Loop through all the specs, creating a big list with all their
     * information.
     */

    for (specPtr = staticSpecs; specPtr->type != TK_CONFIG_END; specPtr++) {
	if ((argvName != NULL) && (specPtr->argvName != argvName)) {
	    continue;
	}
	if (((specPtr->specFlags & needFlags) != needFlags)
		|| (specPtr->specFlags & hateFlags)) {
	    continue;
	}
	if (specPtr->argvName == NULL) {
	    continue;
	}
	list = FormatConfigInfo(interp, tkwin, specPtr, widgRec);
	Tcl_AppendResult(interp, leader, list, "}", NULL);
	ckfree(list);
	leader = " {";
    }
    return TCL_OK;
}

/*
 *--------------------------------------------------------------
 *
 * FormatConfigInfo --
 *
 *	Create a valid Tcl list holding the configuration information for a
 *	single configuration option.
 *
 * Results:
 *	A Tcl list, dynamically allocated. The caller is expected to arrange
 *	for this list to be freed eventually.
 *
 * Side effects:
 *	Memory is allocated.
 *
 *--------------------------------------------------------------
 */

static char *
FormatConfigInfo(
    Tcl_Interp *interp,		/* Interpreter to use for things like
				 * floating-point precision. */
    Tk_Window tkwin,		/* Window corresponding to widget. */
    register const Tk_ConfigSpec *specPtr,
				/* Pointer to information describing
				 * option. */
    char *widgRec)		/* Pointer to record holding current values of
				 * info for widget. */
{
    const char *argv[6];
    char *result;
    char buffer[200];
    Tcl_FreeProc *freeProc = NULL;

    argv[0] = specPtr->argvName;
    argv[1] = specPtr->dbName;
    argv[2] = specPtr->dbClass;
    argv[3] = specPtr->defValue;
    if (specPtr->type == TK_CONFIG_SYNONYM) {
	return Tcl_Merge(2, argv);
    }
    argv[4] = FormatConfigValue(interp, tkwin, specPtr, widgRec, buffer,
	    &freeProc);
    if (argv[1] == NULL) {
	argv[1] = "";
    }
    if (argv[2] == NULL) {
	argv[2] = "";
    }
    if (argv[3] == NULL) {
	argv[3] = "";
    }
    if (argv[4] == NULL) {
	argv[4] = "";
    }
    result = Tcl_Merge(5, argv);
    if (freeProc != NULL) {
	if ((freeProc == TCL_DYNAMIC) || (freeProc == (Tcl_FreeProc *) free)) {
	    ckfree((char *) argv[4]);
	} else {
	    freeProc((char *) argv[4]);
	}
    }
    return result;
}

/*
 *----------------------------------------------------------------------
 *
 * FormatConfigValue --
 *
 *	This function formats the current value of a configuration option.
 *
 * Results:
 *	The return value is the formatted value of the option given by specPtr
 *	and widgRec. If the value is static, so that it need not be freed,
 *	*freeProcPtr will be set to NULL; otherwise *freeProcPtr will be set
 *	to the address of a function to free the result, and the caller must
 *	invoke this function when it is finished with the result.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

static const char *
FormatConfigValue(
    Tcl_Interp *interp,		/* Interpreter for use in real conversions. */
    Tk_Window tkwin,		/* Window corresponding to widget. */
    const Tk_ConfigSpec *specPtr, /* Pointer to information describing option.
				 * Must not point to a synonym option. */
    char *widgRec,		/* Pointer to record holding current values of
				 * info for widget. */
    char *buffer,		/* Static buffer to use for small values.
				 * Must have at least 200 bytes of storage. */
    Tcl_FreeProc **freeProcPtr)	/* Pointer to word to fill in with address of
				 * function to free the result, or NULL if
				 * result is static. */
{
    const char *ptr, *result;

    *freeProcPtr = NULL;
    ptr = widgRec + specPtr->offset;
    result = "";
    switch (specPtr->type) {
    case TK_CONFIG_BOOLEAN:
	if (*((int *) ptr) == 0) {
	    result = "0";
	} else {
	    result = "1";
	}
	break;
    case TK_CONFIG_INT:
	sprintf(buffer, "%d", *((int *) ptr));
	result = buffer;
	break;
    case TK_CONFIG_DOUBLE:
	Tcl_PrintDouble(interp, *((double *) ptr), buffer);
	result = buffer;
	break;
    case TK_CONFIG_STRING:
	result = (*(char **) ptr);
	if (result == NULL) {
	    result = "";
	}
	break;
    case TK_CONFIG_UID: {
	Tk_Uid uid = *((Tk_Uid *) ptr);

	if (uid != NULL) {
	    result = uid;
	}
	break;
    }
    case TK_CONFIG_COLOR: {
	XColor *colorPtr = *((XColor **) ptr);

	if (colorPtr != NULL) {
	    result = Tk_NameOfColor(colorPtr);
	}
	break;
    }
    case TK_CONFIG_FONT: {
	Tk_Font tkfont = *((Tk_Font *) ptr);

	if (tkfont != NULL) {
	    result = Tk_NameOfFont(tkfont);
	}
	break;
    }
    case TK_CONFIG_BITMAP: {
	Pixmap pixmap = *((Pixmap *) ptr);

	if (pixmap != None) {
	    result = Tk_NameOfBitmap(Tk_Display(tkwin), pixmap);
	}
	break;
    }
    case TK_CONFIG_BORDER: {
	Tk_3DBorder border = *((Tk_3DBorder *) ptr);

	if (border != NULL) {
	    result = Tk_NameOf3DBorder(border);
	}
	break;
    }
    case TK_CONFIG_RELIEF:
	result = Tk_NameOfRelief(*((int *) ptr));
	break;
    case TK_CONFIG_CURSOR:
    case TK_CONFIG_ACTIVE_CURSOR: {
	Tk_Cursor cursor = *((Tk_Cursor *) ptr);

	if (cursor != None) {
	    result = Tk_NameOfCursor(Tk_Display(tkwin), cursor);
	}
	break;
    }
    case TK_CONFIG_JUSTIFY:
	result = Tk_NameOfJustify(*((Tk_Justify *) ptr));
	break;
    case TK_CONFIG_ANCHOR:
	result = Tk_NameOfAnchor(*((Tk_Anchor *) ptr));
	break;
    case TK_CONFIG_CAP_STYLE:
	result = Tk_NameOfCapStyle(*((int *) ptr));
	break;
    case TK_CONFIG_JOIN_STYLE:
	result = Tk_NameOfJoinStyle(*((int *) ptr));
	break;
    case TK_CONFIG_PIXELS:
	sprintf(buffer, "%d", *((int *) ptr));
	result = buffer;
	break;
    case TK_CONFIG_MM:
	Tcl_PrintDouble(interp, *((double *) ptr), buffer);
	result = buffer;
	break;
    case TK_CONFIG_WINDOW: {
	Tk_Window tkwin;

	tkwin = *((Tk_Window *) ptr);
	if (tkwin != NULL) {
	    result = Tk_PathName(tkwin);
	}
	break;
    }
    case TK_CONFIG_CUSTOM:
	result = specPtr->customPtr->printProc(specPtr->customPtr->clientData,
		tkwin, widgRec, specPtr->offset, freeProcPtr);
	break;
    default:
	result = "?? unknown type ??";
    }
    return result;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_ConfigureValue --
 *
 *	This function returns the current value of a configuration option for
 *	a widget.
 *
 * Results:
 *	The return value is a standard Tcl completion code (TCL_OK or
 *	TCL_ERROR). The interp's result will be set to hold either the value
 *	of the option given by argvName (if TCL_OK is returned) or an error
 *	message (if TCL_ERROR is returned).
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */

int
Tk_ConfigureValue(
    Tcl_Interp *interp,		/* Interpreter for error reporting. */
    Tk_Window tkwin,		/* Window corresponding to widgRec. */
    const Tk_ConfigSpec *specs, /* Describes legal options. */
    char *widgRec,		/* Record whose fields contain current values
				 * for options. */
    const char *argvName,	/* Gives the command-line name for the option
				 * whose value is to be returned. */
    int flags)			/* Used to specify additional flags that must
				 * be present in config specs for them to be
				 * considered. */
{
    Tk_ConfigSpec *specPtr;
    int needFlags, hateFlags;
    Tcl_FreeProc *freeProc;
    const char *result;
    char buffer[200];

    needFlags = flags & ~(TK_CONFIG_USER_BIT - 1);
    if (Tk_Depth(tkwin) <= 1) {
	hateFlags = TK_CONFIG_COLOR_ONLY;
    } else {
	hateFlags = TK_CONFIG_MONO_ONLY;
    }

    /*
     * Get the build of the config for this interpreter.
     */

    specPtr = GetCachedSpecs(interp, specs);

    specPtr = FindConfigSpec(interp, specPtr, argvName, needFlags, hateFlags);
    if (specPtr == NULL) {
	return TCL_ERROR;
    }
    result = FormatConfigValue(interp, tkwin, specPtr, widgRec, buffer,
	    &freeProc);
    Tcl_SetObjResult(interp, Tcl_NewStringObj(result, -1));
    if (freeProc != NULL) {
	if ((freeProc == TCL_DYNAMIC) || (freeProc == (Tcl_FreeProc *) free)) {
	    ckfree((char *) result);
	} else {
	    freeProc((char *) result);
	}
    }
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * Tk_FreeOptions --
 *
 *	Free up all resources associated with configuration options.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Any resource in widgRec that is controlled by a configuration option
 *	(e.g. a Tk_3DBorder or XColor) is freed in the appropriate fashion.
 *
 * Notes:
 *	Since this is not looking anything up, this uses the static version of
 *	the config specs.
 *
 *----------------------------------------------------------------------
 */

	/* ARGSUSED */
void
Tk_FreeOptions(
    const Tk_ConfigSpec *specs,	/* Describes legal options. */
    char *widgRec,		/* Record whose fields contain current values
				 * for options. */
    Display *display,		/* X display; needed for freeing some
				 * resources. */
    int needFlags)		/* Used to specify additional flags that must
				 * be present in config specs for them to be
				 * considered. */
{
    register const Tk_ConfigSpec *specPtr;
    char *ptr;

    for (specPtr = specs; specPtr->type != TK_CONFIG_END; specPtr++) {
	if ((specPtr->specFlags & needFlags) != needFlags) {
	    continue;
	}
	ptr = widgRec + specPtr->offset;
	switch (specPtr->type) {
	case TK_CONFIG_STRING:
	    if (*((char **) ptr) != NULL) {
		ckfree(*((char **) ptr));
		*((char **) ptr) = NULL;
	    }
	    break;
	case TK_CONFIG_COLOR:
	    if (*((XColor **) ptr) != NULL) {
		Tk_FreeColor(*((XColor **) ptr));
		*((XColor **) ptr) = NULL;
	    }
	    break;
	case TK_CONFIG_FONT:
	    Tk_FreeFont(*((Tk_Font *) ptr));
	    *((Tk_Font *) ptr) = NULL;
	    break;
	case TK_CONFIG_BITMAP:
	    if (*((Pixmap *) ptr) != None) {
		Tk_FreeBitmap(display, *((Pixmap *) ptr));
		*((Pixmap *) ptr) = None;
	    }
	    break;
	case TK_CONFIG_BORDER:
	    if (*((Tk_3DBorder *) ptr) != NULL) {
		Tk_Free3DBorder(*((Tk_3DBorder *) ptr));
		*((Tk_3DBorder *) ptr) = NULL;
	    }
	    break;
	case TK_CONFIG_CURSOR:
	case TK_CONFIG_ACTIVE_CURSOR:
	    if (*((Tk_Cursor *) ptr) != None) {
		Tk_FreeCursor(display, *((Tk_Cursor *) ptr));
		*((Tk_Cursor *) ptr) = None;
	    }
	}
    }
}

/*
 *--------------------------------------------------------------
 *
 * GetCachedSpecs --
 *
 *	Returns a writable per-interpreter (and hence thread-local) copy of
 *	the given spec-table with (some of) the char* fields converted into
 *	Tk_Uid fields; this copy will be released when the interpreter
 *	terminates (during AssocData cleanup).
 *
 * Results:
 *	A pointer to the copied table.
 *
 * Notes:
 *	The conversion to Tk_Uid is only done the first time, when the table
 *	copy is taken. After that, the table is assumed to have Tk_Uids where
 *	they are needed. The time of deletion of the caches isn't very
 *	important unless you've got a lot of code that uses Tk_ConfigureWidget
 *	(or *Info or *Value} when the interpreter is being deleted.
 *
 *--------------------------------------------------------------
 */

static Tk_ConfigSpec *
GetCachedSpecs(
    Tcl_Interp *interp,		/* Interpreter in which to store the cache. */
    const Tk_ConfigSpec *staticSpecs)
				/* Value to cache a copy of; it is also used
				 * as a key into the cache. */
{
    Tk_ConfigSpec *cachedSpecs;
    Tcl_HashTable *specCacheTablePtr;
    Tcl_HashEntry *entryPtr;
    int isNew;

    /*
     * Get (or allocate if it doesn't exist) the hash table that the writable
     * copies of the widget specs are stored in. In effect, this is
     * self-initializing code.
     */

    specCacheTablePtr =
	    Tcl_GetAssocData(interp, "tkConfigSpec.threadTable", NULL);
    if (specCacheTablePtr == NULL) {
	specCacheTablePtr = ckalloc(sizeof(Tcl_HashTable));
	Tcl_InitHashTable(specCacheTablePtr, TCL_ONE_WORD_KEYS);
	Tcl_SetAssocData(interp, "tkConfigSpec.threadTable",
		DeleteSpecCacheTable, specCacheTablePtr);
    }

    /*
     * Look up or create the hash entry that the constant specs are mapped to,
     * which will have the writable specs as its associated value.
     */

    entryPtr = Tcl_CreateHashEntry(specCacheTablePtr, (char *) staticSpecs,
	    &isNew);
    if (isNew) {
	unsigned int entrySpace = sizeof(Tk_ConfigSpec);
	const Tk_ConfigSpec *staticSpecPtr;
	Tk_ConfigSpec *specPtr;

	/*
	 * OK, no working copy in this interpreter so copy. Need to work out
	 * how much space to allocate first.
	 */

	for (staticSpecPtr=staticSpecs; staticSpecPtr->type!=TK_CONFIG_END;
		staticSpecPtr++) {
	    entrySpace += sizeof(Tk_ConfigSpec);
	}

	/*
	 * Now allocate our working copy's space and copy over the contents
	 * from the master copy.
	 */

	cachedSpecs = ckalloc(entrySpace);
	memcpy(cachedSpecs, staticSpecs, entrySpace);
	Tcl_SetHashValue(entryPtr, cachedSpecs);

	/*
	 * Finally, go through and replace database names, database classes
	 * and default values with Tk_Uids. This is the bit that has to be
	 * per-thread.
	 */

	for (specPtr=cachedSpecs; specPtr->type!=TK_CONFIG_END; specPtr++) {
	    if (specPtr->argvName != NULL) {
		if (specPtr->dbName != NULL) {
		    specPtr->dbName = Tk_GetUid(specPtr->dbName);
		}
		if (specPtr->dbClass != NULL) {
		    specPtr->dbClass = Tk_GetUid(specPtr->dbClass);
		}
		if (specPtr->defValue != NULL) {
		    specPtr->defValue = Tk_GetUid(specPtr->defValue);
		}
	    }
	}
    } else {
	cachedSpecs = Tcl_GetHashValue(entryPtr);
    }

    return cachedSpecs;
}

/*
 *--------------------------------------------------------------
 *
 * DeleteSpecCacheTable --
 *
 *	Delete the per-interpreter copy of all the Tk_ConfigSpec tables which
 *	were stored in the interpreter's assoc-data store.
 *
 * Results:
 *	None
 *
 * Side effects:
 *	None (does *not* use any Tk API).
 *
 *--------------------------------------------------------------
 */

static void
DeleteSpecCacheTable(
    ClientData clientData,
    Tcl_Interp *interp)
{
    Tcl_HashTable *tablePtr = clientData;
    Tcl_HashEntry *entryPtr;
    Tcl_HashSearch search;

    for (entryPtr = Tcl_FirstHashEntry(tablePtr,&search); entryPtr != NULL;
	    entryPtr = Tcl_NextHashEntry(&search)) {
	/*
	 * Someone else deallocates the Tk_Uids themselves.
	 */

	ckfree(Tcl_GetHashValue(entryPtr));
    }
    Tcl_DeleteHashTable(tablePtr);
    ckfree(tablePtr);
}

/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 4
 * fill-column: 78
 * End:
 */