summaryrefslogtreecommitdiffstats
path: root/demos/style-editor.tcl
blob: 232a534ff410ab91ebed009e34f3d6f31f43db30 (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
# RCS: @(#) $Id: style-editor.tcl,v 1.6 2005/07/11 01:59:07 treectrl Exp $

namespace eval StyleEditor {
	variable Info
	array unset Info
}

proc StyleEditor::Info {info args} {

    variable Info

    if {[llength $args]} {
	set Info($info) [lindex $args 0]
    }
    return $Info($info)
}

proc StyleEditor::Init {Tdemo} {

    set w .styleEditor
    toplevel $w
    wm title $w "TkTreeCtrl Style Editor"

    Info Tdemo $Tdemo

    panedwindow $w.pwH -orient horizontal -borderwidth 0

    panedwindow $w.pwH.pwV -orient vertical -borderwidth 0

    TreePlusScrollbarsInAFrame $w.pwH.pwV.styleList 0 1
    set T $w.pwH.pwV.styleList.t
    $T configure -showbuttons no -showlines no -showroot no -width 100 -height 200
    $T column create -text "Styles" -expand yes -button no -tag C0
    $T configure -treecolumn C0

    $T notify bind $T <Selection> {
	StyleEditor::SelectStyle
    }

    Info styleList $T

    TreePlusScrollbarsInAFrame $w.pwH.pwV.elementList 0 1
    set T $w.pwH.pwV.elementList.t
    $T configure -showbuttons no -showlines no -showroot no -width 100 -height 200
    $T column create -text "Elements" -expand yes -button no -tag C0
    $T configure -treecolumn C0

    $T notify bind $T <Selection> {
	StyleEditor::SelectElement
    }

    Info elementList $T

    $w.pwH.pwV add $w.pwH.pwV.styleList $w.pwH.pwV.elementList

    set fRight [panedwindow $w.pwH.pwV2 -orient vertical]

    #
    # Property editor
    #

    TreePlusScrollbarsInAFrame $fRight.propertyList 0 1
    set T $fRight.propertyList.t
    $T configure -showbuttons no -showlines no -showroot no
    $T column create -text "Property" -expand yes -button no -tag property \
	-itembackground {#E8E8E8 ""}
    $T column create -text "Value" -expand yes -button no -tag value \
	-itembackground {#E8E8E8 ""}
    $T configure -treecolumn property

    $T notify bind $T <Selection> {
	StyleEditor::SelectProperty %S %D
    }

    Info propertyList $T

    #
    # Style canvas
    #

    set fCanvas [frame $fRight.fCanvas -borderwidth 0]
    set canvas [canvas $fCanvas.canvas -background white \
	-scrollregion {0 0 0 0} -borderwidth 0 -highlightthickness 0 \
	-xscrollcommand [list $fCanvas.xscroll set] \
	-yscrollcommand [list $fCanvas.yscroll set]]
    scrollbar $fCanvas.xscroll -orient horizontal \
	-command [list $canvas xview]
    scrollbar $fCanvas.yscroll -orient vertical \
	-command [list $canvas yview]

    # Copy element config info from the selected item in the demo list
    $Tdemo notify bind StyleEditor <Selection> {
	if {[winfo ismapped .styleEditor]} {
	    StyleEditor::StyleToCanvas
	}
    }

    Info canvas $canvas

    # Create a new treectrl to copy the states/style/elements into, so I don't
    # have to worry about column width or item visibility in the demo list
    set T [treectrl $canvas.t]
    $T configure -itemheight 0 -minitemheight 0 -showbuttons no -showlines no \
	-font [$Tdemo cget -font]
    $T column create

    grid rowconfigure $fCanvas 0 -weight 1
    grid columnconfigure $fCanvas 0 -weight 1
    grid $canvas -row 0 -column 0 -sticky news
    grid $fCanvas.xscroll -row 1 -column 0 -sticky we
    grid $fCanvas.yscroll -row 0 -column 1 -sticky ns

    $w.pwH.pwV2 add $fRight.propertyList $fCanvas

    $w.pwH add $w.pwH.pwV $w.pwH.pwV2

    grid rowconfigure $w 0 -weight 1
    grid columnconfigure $w 0 -weight 1
    grid $w.pwH -row 0 -column 0 -sticky news

    Info selectedStyle ""
    Info selectedElement ""

    wm protocol $w WM_DELETE_WINDOW "ToggleStyleEditorWindow"
    wm geometry $w -0+0

    return
}

proc StyleEditor::SetListOfStyles {} {

    set T [Info styleList]
    set Tdemo [Info Tdemo]

    # Create elements and styles the first time this is called
    if {[llength [$T style names]] == 0} {
	$T element create e1 text -fill [list $::SystemHighlightText {selected focus}]
	$T element create e2 rect -fill [list $::SystemHighlight {selected focus} gray {selected !focus}] \
	    -showfocus yes

	$T style create s1
	$T style elements s1 {e2 e1}
	$T style layout s1 e2 -union [list e1] -ipadx 2 -ipady 2 -iexpand e

	$T configure -defaultstyle s1
    }

    # Clear the list
    $T item delete all

    # One item for each style in the demo list
    foreach style [lsort -dictionary [$Tdemo style names]] {
	set I [$T item create]
	$T item text $I C0 $style
	$T item lastchild root $I

	Info item2style,$I $style
    }

    return
}

proc StyleEditor::SelectStyle {} {

    set T [Info styleList]
    set Tdemo [Info Tdemo]

    set selection [$T selection get]
    if {![llength $selection]} {
	[Info elementList] item delete all
	Info selectedStyle ""
	StyleToCanvas
	return
    }

    set I [lindex $selection 0]
    set style [Info item2style,$I]
    Info selectedStyle $style
    SetListOfElements $style

    Info -orient [$Tdemo style cget $style -orient]

    StyleToCanvas 1

    return
}

proc StyleEditor::SetListOfElements {style} {

    set T [Info elementList]
    set Tdemo [Info Tdemo]

    # Create elements and styles the first time this is called
    if {[llength [$T style names]] == 0} {
	$T element create e1 text -fill [list $::SystemHighlightText {selected focus}]
	$T element create e2 rect -fill [list $::SystemHighlight {selected focus} gray {selected !focus}] \
	    -showfocus yes

	$T style create s1
	$T style elements s1 {e2 e1}
	$T style layout s1 e2 -union [list e1] -ipadx 2 -ipady 2 -iexpand e

	$T configure -defaultstyle s1
    }

    # Clear the list
    $T item delete all

    # One item for each element in the style
    foreach E [$Tdemo style elements $style] {
	set I [$T item create]
	$T item text $I C0 "$E ([$Tdemo element type $E])"
	$T item lastchild root $I

	Info item2element,$I $E
    }

    return
}

proc StyleEditor::SelectElement {} {

    set T [Info elementList]
    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]

    set selection [$T selection get]
    if {![llength $selection]} {
	Info selectedElement ""
	SetPropertyList
	CanvasSelectElement
	return
    }

    set I [lindex $selection 0]
    set element [Info item2element,$I]
    Info selectedElement $element

    SetPropertyList
    CanvasSelectElement

    return
}

proc StyleEditor::SetPropertyList {} {

    set T [Info propertyList]
    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]

    # Create elements and styles the first time this is called
    if {[llength [$T style names]] == 0} {
	$T state define header

	$T element create e1 text \
	    -fill [list $::SystemHighlightText selected white header] \
	    -font [list "[$T cget -font] bold" header]
	$T element create e2 rect \
	    -fill [list #ACA899 header $::SystemHighlight selected] \
	    -outline black -outlinewidth 1 -open nw -showfocus no

	$T element create eWindow window

	set S [$T style create s1]
	$T style elements $S {e2 e1}
	$T style layout $S e2 -detach yes -indent no -iexpand xy
	$T style layout $S e1 -expand ns -padx {4 0}

	set S [$T style create sWindow]
	$T style elements $S {e2 eWindow}
	$T style layout $S e2 -detach yes -indent no -iexpand xy
	$T style layout $S eWindow -expand ns -padx {0 1} -pady {0 1}

	set S [$T style create sHeader]
	$T style elements $S {e2 e1}
	$T style layout $S e2 -detach yes -iexpand xy
	$T style layout $S e1 -expand ns -padx {4 0}

	Info editor,pad [MakePadEditor $T]
	Info editor,expand [MakeExpandEditor $T]
	Info editor,iexpand [MakeIExpandEditor $T]
	Info editor,squeeze [MakeSqueezeEditor $T]
	Info editor,boolean [MakeBooleanEditor $T]
	Info editor,pixels [MakePixelsEditor $T]

	update idletasks
	set height 0
	foreach editor {pad expand iexpand squeeze boolean pixels} {	
	    set heightWin [winfo reqheight [Info editor,$editor]]
	    incr heightWin
	    if {$heightWin > $height} {
		set height $heightWin
	    }
	}
	$T configure -font [[Info editor,pad].v1 cget -font] \
	    -minitemheight $height

	$T configure -defaultstyle s1
    }

    $T item delete all

    if {$element eq ""} return

    foreach {header option} {
	"Detach" ""
	"" -detach
	"" -indent
	"Union" ""
	"" -union
	"Expand and Squeeze" ""
	"" -expand
	"" -iexpand
	"" -squeeze
	"Sticky" ""
	"" -sticky
	"Padding" ""
	"" -ipadx
	"" -ipady
	"" -padx
	"" -pady
	"Height" ""
	"" -minheight
	"" -height
	"" -maxheight
	"Width" ""
	"" -minwidth
	"" -width
	"" -maxwidth
    } {
 	set I [$T item create]
	if {$header ne ""} {
	    $T item style set $I 0 sHeader
	    $T item span $I 0 2
	    $T item element configure $I 0 e1 -text $header -fill White
	    $T item state set $I header
	} else {
	    $T item style set $I 1 s1
	    $T item text $I 0 $option 1 [$Tdemo style layout $style $element $option]
	}
	$T item lastchild root $I
   }

    $T column configure 0 -width [expr {[$T column neededwidth 0] * 1.0}]

    return
}

proc StyleEditor::SelectProperty {select deselect} {

    set T [Info propertyList]
    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]

    if {[llength $deselect] && ($element ne "")} { 
	set I [lindex $deselect 0]
	set option [$T item text $I 0]
	if {[string index $option 0] eq "-"} {
	    $T item style set $I 1 s1
	    $T item text $I 1 [$Tdemo style layout $style $element $option]
	}
    }

    set selection [$T selection get]
    if {![llength $selection]} {
	Info selectedOption ""
	return
    }

    set I [lindex $selection 0]
    set option [$T item text $I 0]
    if {[string index $option 0] ne "-"} {
	Info selectedOption ""
	return
    }
    Info selectedOption $option

    $T item style set $I 1 sWindow
    switch -- $option {
	-padx -
	-pady -
	-ipadx -
	-ipady {
	    $T item element configure $I 1 eWindow -window [Info editor,pad]
	    set pad [$Tdemo style layout $style $element $option]
	    if {[llength $pad] == 2} {
		Info -pad,1 [lindex $pad 0]
		Info -pad,2 [lindex $pad 1]
		Info -pad,equal 0
	    } else {
		Info -pad,1 $pad
		Info -pad,2 $pad
		Info -pad,equal 1
	    }
	    Info -pad,edit ""
	}
	-expand -
	-sticky {
	    $T item element configure $I 1 eWindow -window [Info editor,expand]
	    set value [$Tdemo style layout $style $element $option]
	    foreach flag {n s w e} {
		Info -expand,$flag [expr {[string first $flag $value] != -1}]
	    }
	}
	-iexpand {
	    $T item element configure $I 1 eWindow -window [Info editor,iexpand]
	    set value [$Tdemo style layout $style $element $option]
	    foreach flag {x y n s w e} {
		Info -iexpand,$flag [expr {[string first $flag $value] != -1}]
	    }
	}
	-detach -
	-indent {
	    $T item element configure $I 1 eWindow -window [Info editor,boolean]
	    Info -boolean [$Tdemo style layout $style $element $option]
	}
	-squeeze {
	    $T item element configure $I 1 eWindow -window [Info editor,squeeze]
	    set value [$Tdemo style layout $style $element $option]
	    foreach flag {x y} {
		Info -squeeze,$flag [expr {[string first $flag $value] != -1}]
	    }
	}
	-minheight -
	-height -
	-maxheight -
	-minwidth -
	-width -
	-maxwidth {
	    $T item element configure $I 1 eWindow -window [Info editor,pixels]
	    Info -pixels [$Tdemo style layout $style $element $option]
	    if {[Info -pixels] eq ""} {
		Info -pixels,empty 1
		[Info editor,pixels].v1 conf -state disabled
	    } else {
		Info -pixels,empty 0
		[Info editor,pixels].v1 conf -state normal
	    }
	}
    }

    return
}

proc StyleEditor::MakePadEditor {parent} {

    set f [frame $parent.editPad -borderwidth 0]
    spinbox $f.v1 -from 0 -to 100 -width 3 \
	-command {StyleEditor::Sync_pad 1} \
	-textvariable ::StyleEditor::Info(-pad,1)
    spinbox $f.v2 -from 0 -to 100 -width 3 \
	-command {StyleEditor::Sync_pad 2} \
	-textvariable ::StyleEditor::Info(-pad,2)
    checkbutton $f.cb -text "Equal" \
	-command {StyleEditor::Sync_pad_equal} \
	-variable ::StyleEditor::Info(-pad,equal)
    pack $f.v1 -side left -padx {0 10} -pady 0
    pack $f.v2 -side left -padx {0 10} -pady 0
    pack $f.cb -side left -padx 0 -pady 0

    bind $f.v1 <KeyPress-Return> {
	StyleEditor::Sync_pad 1
    }
    bind $f.v2 <KeyPress-Return> {
	StyleEditor::Sync_pad 2
    }

    return $f
}

proc StyleEditor::MakeExpandEditor {parent} {

    set f [frame $parent.editExpand -borderwidth 0]
    foreach flag {w n e s} {
	checkbutton $f.$flag -text $flag -width 1 \
	    -variable ::StyleEditor::Info(-expand,$flag) \
	    -command {StyleEditor::Sync_expand}
	pack $f.$flag -side left -padx 10
    }

    return $f
}

proc StyleEditor::MakeIExpandEditor {parent} {

    set f [frame $parent.editIExpand -borderwidth 0]
    foreach flag {x y w n e s} {
	checkbutton $f.$flag -text $flag -width 1 \
	    -variable ::StyleEditor::Info(-iexpand,$flag) \
	    -command {StyleEditor::Sync_iexpand}
	pack $f.$flag -side left -padx 10
    }

    return $f
}

proc StyleEditor::MakePixelsEditor {parent} {

    set f [frame $parent.editPixels -borderwidth 0]
    spinbox $f.v1 -from 0 -to 10000 -width 10 \
	-command {StyleEditor::Sync_pixels} \
	-textvariable ::StyleEditor::Info(-pixels) \
	-validate key -validatecommand {string is integer %P}
    checkbutton $f.cb -text "Unspecified" \
	-command {StyleEditor::Sync_pixels} \
	-variable ::StyleEditor::Info(-pixels,empty)
    pack $f.v1 -side left -padx 0 -pady 0
    pack $f.cb -side left -padx 0 -pady 0

    bind $f.v1 <KeyPress-Return> {
	StyleEditor::Sync_pixels
    }

    return $f
}

proc StyleEditor::MakeSqueezeEditor {parent} {

    set f [frame $parent.editSqueeze -borderwidth 0]
    foreach flag {x y} {
	checkbutton $f.$flag -text $flag -width 1 \
	    -variable ::StyleEditor::Info(-squeeze,$flag) \
	    -command {StyleEditor::Sync_squeeze}
	pack $f.$flag -side left -padx 10
    }

    return $f
}

proc StyleEditor::MakeBooleanEditor {parent} {

    set f [frame $parent.editBoolean -borderwidth 0]
    foreach value {yes no} {
	radiobutton $f.$value -text $value \
	    -variable ::StyleEditor::Info(-boolean) \
	    -value $value \
	    -command {StyleEditor::Sync_boolean}
	pack $f.$value -side left -padx 10
    }

    return $f
}

proc StyleEditor::Sync_orient {} {

    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    $Tdemo style configure $style -orient [Info -orient]
    return
}

proc StyleEditor::Sync_pad {index} {

    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]
    set option [Info selectedOption]
    if {[Info -pad,equal]} {
	if {$index == 1} {
	    Info -pad,2 [Info -pad,1]
	} else {
	    Info -pad,1 [Info -pad,2]
	}
    }
    $Tdemo style layout $style $element $option [list [Info -pad,1] [Info -pad,2]]
    Info -pad,edit $index
    StyleToCanvas
    return
}

proc StyleEditor::Sync_pad_equal {} {
    if {![Info -pad,equal]} return
    if {[Info -pad,edit] eq ""} {
	Info -pad,edit 1
    }
    if {[Info -pad,edit] == 1} {
	Info -pad,2 [Info -pad,1]
    } else {
	Info -pad,1 [Info -pad,2]
    }
    Sync_pad [Info -pad,edit]
    return
}

proc StyleEditor::Sync_expand {} {

    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]
    set option [Info selectedOption]
    set value ""
    foreach flag {n s w e} {
	if {[Info -expand,$flag]} {
	    append value $flag
	}
    }
    $Tdemo style layout $style $element $option $value
    StyleToCanvas
    return
}

proc StyleEditor::Sync_iexpand {} {

    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]
    set option [Info selectedOption]
    set value ""
    foreach flag {x y n s w e} {
	if {[Info -iexpand,$flag]} {
	    append value $flag
	}
    }
    $Tdemo style layout $style $element $option $value
    StyleToCanvas
    return
}

proc StyleEditor::Sync_squeeze {} {

    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]
    set option [Info selectedOption]
    set value ""
    foreach flag {x y} {
	if {[Info -squeeze,$flag]} {
	    append value $flag
	}
    }
    $Tdemo style layout $style $element -squeeze $value
    StyleToCanvas
    return
}

proc StyleEditor::Sync_boolean {} {

    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]
    set option [Info selectedOption]
    $Tdemo style layout $style $element $option [Info -boolean]
    StyleToCanvas
    return
}

proc StyleEditor::Sync_pixels {} {

    set Tdemo [Info Tdemo]
    set style [Info selectedStyle]
    set element [Info selectedElement]
    set option [Info selectedOption]
    set value [Info -pixels]
    if {[Info -pixels,empty]} {
	set value {}
	[Info editor,pixels].v1 conf -state disabled
    } else {
	[Info editor,pixels].v1 conf -state normal
    }
    $Tdemo style layout $style $element $option $value
    StyleToCanvas
    return
}

proc StyleEditor::StyleToCanvas {{scroll 0}} {

    set Tdemo [Info Tdemo]
    set canvas [Info canvas]
    set style [Info selectedStyle]

    $canvas delete all

    if {$style eq ""} {
	$canvas configure -scrollregion {0 0 0 0}
	return
    }

    set T $canvas.t

    $T configure -itemheight 0
    $T column configure 0 -width {}
    eval $T state undefine [$T state names]
    eval $T style delete [$T style names]
    eval $T element delete [$T element names]


    # Copy states
    foreach state [$Tdemo state names] {
	$T state define $state
    }

    # Copy elements
    foreach E [$Tdemo style elements $style] {
	$T element create $E [$Tdemo element type $E]
	foreach list [$Tdemo element configure $E] {
	    foreach {name x y default current} $list {}
	    $T element configure $E $name $current
	}
    }

    # Copy style
    $T style create $style -orient [$Tdemo style cget $style -orient]
    $T style elements $style [$Tdemo style elements $style]
    foreach E [$T style elements $style] {
	eval $T style layout $style $E [$Tdemo style layout $style $E]
    }

    # Find a selected item using the style to copy element config info from
    set match ""
    foreach I [$Tdemo selection get] {
	set C 0
	foreach S [$Tdemo item style set $I] {
	    if {$S eq $style} {
		set match $I
		break
	    }
	    incr C
	}
	if {$match ne ""} break
    }
    # No selected item uses the current style, look for an unselected item
    if {$match eq ""} {
	foreach I [$Tdemo range first last] {
	    set C 0
	    foreach S [$Tdemo item style set $I] {
		if {$S eq $style} {
		    set match $I
		    break
		}
		incr C
	    }
	    if {$match ne ""} break
	}
    }
    if {$match ne ""} {
	set I $match
	foreach E [$Tdemo item style elements $I $C] {
	    foreach list [$Tdemo item element configure $I $C $E] {
		foreach {name x y default current} $list {}
		set masterDefault [$Tdemo element cget $E $name]
		set sameAsMaster [string equal $masterDefault $current]
		if {!$sameAsMaster && ![string length $current]} {
		    set sameAsMaster 1
		    set current $masterDefault
		}
		if {$sameAsMaster} {
		} elseif {$name eq "-window"} {
		    $T style layout $style $E -width [winfo reqwidth $current] \
			-height [winfo reqheight $current]
		} else {
		    $T element configure $E $name $current
		}
	    }
	}
    }
if 0 {
    # Do this after creating styles so -defaultstyle works
    foreach list [$Tdemo configure] {
	if {[llength $list] == 2} continue
	foreach {name x y default current} $list {}
	
	$T configure $name $current
    }
}
    set I root
    $T item style set $I 0 $style

    set scale 2
    
    set dx 10
    set dy 10

    scan [$T item bbox $I 0] "%d %d %d %d" x1 y1 x2 y2
    $canvas create rectangle \
	[expr {$dx + $x1 * $scale}] [expr {$dy + $y1 * $scale}] \
	[expr {$dx + $x2 * $scale}] [expr {$dy + $y2 * $scale}] \
	-outline gray90

    foreach E [$T style elements $style] {
	scan [$T item bbox $I 0 $E] "%d %d %d %d" x1 y1 x2 y2
	$canvas create rectangle \
	    [expr {$dx + $x1 * $scale}] [expr {$dy + $y1 * $scale}] \
	    [expr {$dx + $x2 * $scale}] [expr {$dy + $y2 * $scale}] \
	    -tags $E
    }

    scan [$T item bbox $I 0] "%d %d %d %d" x1 y1 x2 y2
    incr dy [expr {($y2 - $y1) * $scale + 20}]

    # Now give the style 1.5 times its needed space to test expansion
    scan [$T item bbox $I 0] "%d %d %d %d" x1 y1 x2 y2
    $T column configure 0 -width [expr {($x2 - $x1) * 1.5}]
    $T configure -itemheight [expr {($y2 - $y1) * 1.5}]

    scan [$T item bbox $I 0] "%d %d %d %d" x1 y1 x2 y2

    $canvas create rectangle \
	[expr {$dx + $x1 * $scale}] [expr {$dy + $y1 * $scale}] \
	[expr {$dx + $x2 * $scale}] [expr {$dy + $y2 * $scale}] \
	-outline gray90

    foreach E [$T style elements $style] {
	scan [$T item bbox $I 0 $E] "%d %d %d %d" x1 y1 x2 y2
	$canvas create rectangle \
	    [expr {$dx + $x1 * $scale}] [expr {$dy + $y1 * $scale}] \
	    [expr {$dx + $x2 * $scale}] [expr {$dy + $y2 * $scale}] \
	    -tags $E
    }

    scan [$canvas bbox all] "%d %d %d %d" x1 y1 x2 y2
    incr x2 10
    incr y2 10
    $canvas configure -scrollregion [list 0 0 $x2 $y2]
    if {$scroll} {
	$canvas xview moveto 0.0
	$canvas yview moveto 0.0
    }

    CanvasSelectElement

    return
}

proc StyleEditor::CanvasSelectElement {} {

    set canvas [Info canvas]
    set style [Info selectedStyle]
    set element [Info selectedElement]

    $canvas itemconfigure all -fill ""
    if {$element ne ""} {
	$canvas itemconfigure $element -fill gray75
    }

    return
}