summaryrefslogtreecommitdiff
path: root/systems/texlive/tlnet/tlpkg/tltcl/lib/tk8.6/demos/widget
blob: 1530ac5034e8bfbec1701ddd9717002f86c8e3f0 (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
#!/bin/sh
# the next line restarts using wish \
exec wish86 "$0" ${1+"$@"}

# widget --
# This script demonstrates the various widgets provided by Tk, along with many
# of the features of the Tk toolkit. This file only contains code to generate
# the main window for the application, which invokes individual
# demonstrations. The code for the actual demonstrations is contained in
# separate ".tcl" files is this directory, which are sourced by this script as
# needed.

package require Tk	8.5
package require msgcat

eval destroy [winfo child .]
set tk_demoDirectory [file join [pwd] [file dirname [info script]]]
::msgcat::mcload $tk_demoDirectory
namespace import ::msgcat::mc
wm title . [mc "Widget Demonstration"]
if {[tk windowingsystem] eq "x11"} {
    # This won't work everywhere, but there's no other way in core Tk at the
    # moment to display a coloured icon.
    image create photo TclPowered \
	    -file [file join $tk_library images logo64.gif]
    wm iconwindow . [toplevel ._iconWindow]
    pack [label ._iconWindow.i -image TclPowered]
    wm iconname . [mc "tkWidgetDemo"]
}

if {"defaultFont" ni [font names]} {
    # TIP #145 defines some standard named fonts
    if {"TkDefaultFont" in [font names] && "TkFixedFont" in [font names]} {
        # FIX ME: the following technique of cloning the font to copy it works
        #         fine but means that if the system font is changed by Tk
        #         cannot update the copied font. font alias might be useful
        #         here -- or fix the app to use TkDefaultFont etc.
        font create mainFont   {*}[font configure TkDefaultFont]
        font create fixedFont  {*}[font configure TkFixedFont]
        font create boldFont   {*}[font configure TkDefaultFont] -weight bold
        font create titleFont  {*}[font configure TkDefaultFont] -weight bold
        font create statusFont {*}[font configure TkDefaultFont]
        font create varsFont   {*}[font configure TkDefaultFont]
	if {[tk windowingsystem] eq "aqua"} {
	    font configure titleFont -size 17
	}
    } else {
        font create mainFont   -family Helvetica -size 12
        font create fixedFont  -family Courier   -size 10
        font create boldFont   -family Helvetica -size 12 -weight bold
        font create titleFont  -family Helvetica -size 18 -weight bold
        font create statusFont -family Helvetica -size 10
        font create varsFont   -family Helvetica -size 14
    }
}

set widgetDemo 1
set font mainFont

image create photo ::img::refresh -format GIF -data {
    R0lGODlhEAAQAJEDAP///wAAACpnKv///yH5BAEAAAMALAAAAAAQABAAAAI63IKp
    xgcPH2ouwgBCw1HIxHCQ4F3hSJKmwZXqWrmWxj7lKJ2dndcon9EBUq+gz3brVXAR
    2tICU0gXBQA7
}

image create photo ::img::view -format GIF -data {
    R0lGODlhEAAQAKIHAP///wwMDAAAAMDAwNnZ2SYmJmZmZv///yH5BAEAAAcALAAA
    AAAQABAAAANMKLos90+ASamDRxJCgw9YVnlDOXiQBgRDBRgHKE6sW8QR3doPKK27
    yg33q/GIOhdg6OsEJzeZykiBSUcs06e56Xx6np8ScIkFGuhQAgA7
}

image create photo ::img::delete -format GIF -data {
    R0lGODlhEAAQAIABAIQAAP///yH5BAEAAAEALAAAAAAQABAAAAIjjI+pmwAc3HGy
    PUSvqYpuvWQg40FfSVacBa5nN6JYDI3mzRQAOw==
}

image create photo ::img::print -format GIF -data {
    R0lGODlhEAAQALMKAAAAAP///52VunNkl8C82Yl+qldBgq+pyrOzs1fYAP///wAA
    AAAAAAAAAAAAAAAAACH5BAEAAAoALAAAAAAQABAAAARGUMlJKwU4AztB+ODGeUiJ
    fGLlgeEYmGWQXmx7aXgmAUTv/74N4EAsGhOJg1DAbDqbwoJ0Sp0KB9isNis0eL/g
    ryhH5pgnEQA7
}

# Note that this is run through the message catalog! This is because this is
# actually an image of a word.
image create photo ::img::new -format PNG -data [mc {
    iVBORw0KGgoAAAANSUhEUgAAAB4AAAAOCAYAAAA45qw5AAACMElEQVR4AeVTAwxd
    QRCc2tZHGtQ2w9q2bdsOa9u2bUW1bdt2Z372JZe6DapJLqtb3h7+T8yKi5j4CsYD
    EUQXxETclT7kWOlH2VV+tFkdQHPSwksSISF+BauCqL0qgOcMWgGfgEkaMsHxqUBk
    3plE/sOnh/qDPAPJH/CKFBivGHWzFwBRnHhlqbu1Mh6CoFNnC/JshQ9p4YC2lrKt
    DCAV+THiVejyhMjAbrNSrroiEfKR9g7ZfCgOog8QfnUQV62wAk68ndQ9ZbyoWO1H
    Y6eDY1LCQL6a9ApOp9Hi1T0+gQq2JKMlky/oTKQliKWxEZvyG575kpW4pl1aZnQK
    CLOVt45Lkp8uXp2SL8KO6uitNTZLdpK6s+I/eZbhpmsmWeOGOVQNKYLITzpKPAO3
    tY7LSNZ7ccSLxX9y3uuOxRkg3dKESMoCHvL+GRVCutXsB3guLgDCeXOv4iWWkvwG
    BaS+PmlpK6SI9ApI2oC2UtrwZQEkhkH+NtolVlQXJl1I+QltuU3XEc721bIRFpa8
    IA5iqTo6vNNWmkNBLQbPeXwF2g17Q94nTQAfY3YzeY+WSu8MDzQ2kpELUhSGJUHE
    0zeR3rY1L+Xl5G/re+jbiK6KhThwwInsts1fbMUUcpZszKeVtggZEiGdZDe5AtHh
    7vL4CGiRvvKPS8FAvq9Nr4ZkFadR2y6kggu1z4vlyIbBp6BugQ8JLEg4bTkD9eMZ
    QZ8hpJ3VvTtuvbWrY/ElvP/9R+Aj3603+iE3fkEAAAAASUVORK5CYII=
}]

#----------------------------------------------------------------
# The code below creates the main window, consisting of a menu bar and a text
# widget that explains how to use the program, plus lists all of the demos as
# hypertext items.
#----------------------------------------------------------------

menu .menuBar -tearoff 0

# On Aqua, just use the default menu.
if {[tk windowingsystem] ne "aqua"} {
    # This is a tk-internal procedure to make i18n easier
    ::tk::AmpMenuArgs .menuBar add cascade -label [mc "&File"] \
	    -menu .menuBar.file
    menu .menuBar.file -tearoff 0
    ::tk::AmpMenuArgs .menuBar.file add command -label [mc "&About..."] \
	    -command {tkAboutDialog} -accelerator [mc "<F1>"]
    bind . <F1> {tkAboutDialog}
    .menuBar.file add sep
    if {[string match win* [tk windowingsystem]]} {
	# Windows doesn't usually have a Meta key
	::tk::AmpMenuArgs .menuBar.file add command -label [mc "&Quit"] \
		-command {exit} -accelerator [mc "Ctrl+Q"]
	bind . <[mc "Control-q"]> {exit}
    } else {
	::tk::AmpMenuArgs .menuBar.file add command -label [mc "&Quit"] \
		-command {exit} -accelerator [mc "Meta-Q"]
	bind . <[mc "Meta-q"]> {exit}
    }
    . configure -menu .menuBar
}

ttk::frame .statusBar
ttk::label .statusBar.lab -text "   " -anchor w
if {[tk windowingsystem] eq "aqua"} {
    ttk::separator .statusBar.sep
    pack .statusBar.sep -side top -expand yes -fill x -pady 0
}
pack .statusBar.lab -side left -padx 2 -expand yes -fill both
if {[tk windowingsystem] ne "aqua"} {
    ttk::sizegrip .statusBar.foo
    pack .statusBar.foo -side left -padx 2
}
pack .statusBar -side bottom -fill x -pady 2

set textheight 30
catch {
    set textheight [expr {
	([winfo screenheight .] * 0.7) /
	[font metrics mainFont -displayof . -linespace]
    }]
}

ttk::frame .textFrame
ttk::scrollbar .s -orient vertical -command {.t yview} -takefocus 1
pack .s -in .textFrame -side right -fill y
text .t -yscrollcommand {.s set} -wrap word -width 70 -height $textheight \
	-font mainFont -setgrid 1 -highlightthickness 0 \
	-padx 4 -pady 2 -takefocus 0
pack .t -in .textFrame -expand y -fill both -padx 1
pack .textFrame -expand yes -fill both
if {[tk windowingsystem] eq "aqua"} {
    pack configure .statusBar.lab -padx {10 18} -pady {4 6}
    pack configure .statusBar -pady 0
    .t configure -padx 10 -pady 0
}

# Create a bunch of tags to use in the text widget, such as those for section
# titles and demo descriptions. Also define the bindings for tags.

.t tag configure title -font titleFont
.t tag configure subtitle -font titleFont
.t tag configure bold  -font boldFont
if {[tk windowingsystem] eq "aqua"} {
    .t tag configure title -spacing1 8
    .t tag configure subtitle -spacing3 3
}

# We put some "space" characters to the left and right of each demo
# description so that the descriptions are highlighted only when the mouse
# cursor is right over them (but not when the cursor is to their left or
# right).
#
.t tag configure demospace -lmargin1 1c -lmargin2 1c

if {[winfo depth .] == 1} {
    .t tag configure demo -lmargin1 1c -lmargin2 1c \
	-underline 1
    .t tag configure visited -lmargin1 1c -lmargin2 1c \
	-underline 1
    .t tag configure hot -background black -foreground white
} else {
    .t tag configure demo -lmargin1 1c -lmargin2 1c \
	-foreground blue -underline 1
    .t tag configure visited -lmargin1 1c -lmargin2 1c \
	-foreground #303080 -underline 1
    if {[tk windowingsystem] eq "aqua"} {
	.t tag configure demo -foreground systemLinkColor
	.t tag configure visited -foreground purple
    }
    .t tag configure hot -foreground red -underline 1
}
.t tag bind demo <ButtonRelease-1> {
    invoke [.t index {@%x,%y}]
}
set lastLine ""
.t tag bind demo <Enter> {
    set lastLine [.t index {@%x,%y linestart}]
    .t tag add hot "$lastLine +1 chars" "$lastLine lineend -1 chars"
    .t config -cursor [::ttk::cursor link]
    showStatus [.t index {@%x,%y}]
}
.t tag bind demo <Leave> {
    .t tag remove hot 1.0 end
    .t config -cursor [::ttk::cursor text]
    .statusBar.lab config -text ""
}
.t tag bind demo <Motion> {
    set newLine [.t index {@%x,%y linestart}]
    if {$newLine ne $lastLine} {
	.t tag remove hot 1.0 end
	set lastLine $newLine

	set tags [.t tag names {@%x,%y}]
	set i [lsearch -glob $tags demo-*]
	if {$i >= 0} {
	    .t tag add hot "$lastLine +1 chars" "$lastLine lineend -1 chars"
	}
    }
    showStatus [.t index {@%x,%y}]
}

##############################################################################
# Create the text for the text widget.

# addFormattedText --
#
#	Add formatted text (but not hypertext) to the text widget after first
#	passing it through the message catalog to allow for localization.
#	Lines starting with @@ are formatting directives (insert title, insert
#	demo hyperlink, begin newline, or change style) and all other lines
#	are literal strings to be inserted. Substitutions are performed,
#	allowing processing pieces through the message catalog. Blank lines
#	are ignored.
#
proc addFormattedText {formattedText} {
    set style normal
    set isNL 1
    set demoCount 0
    set new 0
    foreach line [split $formattedText \n] {
	set line [string trim $line]
	if {$line eq ""} {
	    continue
	}
	if {[string match @@* $line]} {
	    set data [string range $line 2 end]
	    set key [lindex $data 0]
	    set values [lrange $data 1 end]
	    switch -exact -- $key {
		title {
		    .t insert end [mc $values]\n title \n normal
		}
		newline {
		    .t insert end \n $style
		    set isNL 1
		}
		subtitle {
		    .t insert end "\n" {} [mc $values] subtitle \
			    " \n " demospace
		    set demoCount 0
		}
		demo {
		    set description [lassign $values name]
		    .t insert end "[incr demoCount]. [mc $description]" \
			    [list demo demo-$name]
		    if {$new} {
			.t image create end -image ::img::new -padx 5
			set new 0
		    }
		    .t insert end " \n " demospace
		}
		new {
		    set new 1
		}
		default {
		    set style $key
		}
	    }
	    continue
	}
	if {!$isNL} {
	    .t insert end " " $style
	}
	set isNL 0
	.t insert end [mc $line] $style
    }
}

addFormattedText {
    @@title	Tk Widget Demonstrations

    This application provides a front end for several short scripts
    that demonstrate what you can do with Tk widgets.  Each of the
    numbered lines below describes a demonstration; you can click on
    it to invoke the demonstration.  Once the demonstration window
    appears, you can click the
    @@bold
    See Code
    @@normal
    button to see the Tcl/Tk code that created the demonstration.  If
    you wish, you can edit the code and click the
    @@bold
    Rerun Demo
    @@normal
    button in the code window to reinvoke the demonstration with the
    modified code.
    @@newline

    @@subtitle	Labels, buttons, checkbuttons, and radiobuttons
    @@demo label	Labels (text and bitmaps)
    @@demo unicodeout	Labels and UNICODE text
    @@demo button	Buttons
    @@demo check	Check-buttons (select any of a group)
    @@demo radio	Radio-buttons (select one of a group)
    @@demo puzzle	A 15-puzzle game made out of buttons
    @@demo icon		Iconic buttons that use bitmaps
    @@demo image1	Two labels displaying images
    @@demo image2	A simple user interface for viewing images
    @@demo labelframe	Labelled frames
    @@demo ttkbut	The simple Themed Tk widgets

    @@subtitle	Listboxes and Trees
    @@demo states	The 50 states
    @@demo colors	Colors: change the color scheme for the application
    @@demo sayings	A collection of famous and infamous sayings
    @@demo mclist	A multi-column list of countries
    @@demo tree		A directory browser tree

    @@subtitle	Entries, Spin-boxes and Combo-boxes
    @@demo entry1	Entries without scrollbars
    @@demo entry2	Entries with scrollbars
    @@demo entry3	Validated entries and password fields
    @@demo spin		Spin-boxes
    @@demo combo	Combo-boxes
    @@demo form		Simple Rolodex-like form

    @@subtitle	Text
    @@demo text		Basic editable text
    @@demo style	Text display styles
    @@demo bind		Hypertext (tag bindings)
    @@demo twind	A text widget with embedded windows and other features
    @@demo search	A search tool built with a text widget
    @@demo textpeer	Peering text widgets

    @@subtitle	Canvases
    @@demo items	The canvas item types
    @@demo plot		A simple 2-D plot
    @@demo ctext	Text items in canvases
    @@demo arrow	An editor for arrowheads on canvas lines
    @@demo ruler	A ruler with adjustable tab stops
    @@demo floor	A building floor plan
    @@demo cscroll	A simple scrollable canvas
    @@demo knightstour  A Knight's tour of the chess board

    @@subtitle	Scales and Progress Bars
    @@demo hscale	Horizontal scale
    @@demo vscale	Vertical scale
    @@new
    @@demo ttkscale	Themed scale linked to a label with traces
    @@demo ttkprogress	Progress bar

    @@subtitle	Paned Windows and Notebooks
    @@demo paned1	Horizontal paned window
    @@demo paned2	Vertical paned window
    @@demo ttkpane	Themed nested panes
    @@demo ttknote	Notebook widget

    @@subtitle	Menus and Toolbars
    @@demo menu		Menus and cascades (sub-menus)
    @@demo menubu	Menu-buttons
    @@demo ttkmenu	Themed menu buttons
    @@demo toolbar	Themed toolbar

    @@subtitle	Common Dialogs
    @@demo msgbox	Message boxes
    @@demo filebox	File selection dialog
    @@demo clrpick	Color picker
    @@demo fontchoose	Font selection dialog

    @@subtitle	Animation
    @@demo anilabel	Animated labels
    @@demo aniwave	Animated wave
    @@demo pendulum	Pendulum simulation
    @@demo goldberg	A celebration of Rube Goldberg

    @@subtitle	Miscellaneous
    @@demo bitmap	The built-in bitmaps
    @@demo dialog1	A dialog box with a local grab
    @@demo dialog2	A dialog box with a global grab
}

##############################################################################

.t configure -state disabled
focus .s

# addSeeDismiss --
# Add "See Code" and "Dismiss" button frame, with optional "See Vars"
#
# Arguments:
# w -		The name of the frame to use.

proc addSeeDismiss {w show {vars {}} {extra {}}} {
    ## See Code / Dismiss buttons
    ttk::frame $w
    ttk::separator $w.sep
    #ttk::frame $w.sep -height 2 -relief sunken
    grid $w.sep -columnspan 4 -row 0 -sticky ew -pady 2
    ttk::button $w.dismiss -text [mc "Dismiss"] \
	-image ::img::delete -compound left \
	-command [list destroy [winfo toplevel $w]]
    ttk::button $w.code -text [mc "See Code"] \
	-image ::img::view -compound left \
	-command [list showCode $show]
    set buttons [list x $w.code $w.dismiss]
    if {[llength $vars]} {
	ttk::button $w.vars -text [mc "See Variables"] \
	    -image ::img::view -compound left \
	    -command [concat [list showVars $w.dialog] $vars]
	set buttons [linsert $buttons 1 $w.vars]
    }
    if {$extra ne ""} {
	set buttons [linsert $buttons 1 [uplevel 1 $extra]]
    }
    grid {*}$buttons -padx 4 -pady 4
    grid columnconfigure $w 0 -weight 1
    if {[tk windowingsystem] eq "aqua"} {
	foreach b [lrange $buttons 1 end] {$b configure -takefocus 0}
	grid configure $w.sep -pady 0
	grid configure {*}$buttons -pady {10 12}
	grid configure [lindex $buttons 1] -padx {16 4}
	grid configure [lindex $buttons end] -padx {4 18}
    }
    return $w
}

# positionWindow --
# This procedure is invoked by most of the demos to position a new demo
# window.
#
# Arguments:
# w -		The name of the window to position.

proc positionWindow w {
    wm geometry $w +300+300
}

# showVars --
# Displays the values of one or more variables in a window, and updates the
# display whenever any of the variables changes.
#
# Arguments:
# w -		Name of new window to create for display.
# args -	Any number of names of variables.

proc showVars {w args} {
    catch {destroy $w}
    toplevel $w
    if {[tk windowingsystem] eq "x11"} {wm attributes $w -type dialog}
    wm title $w [mc "Variable values"]

    set b [ttk::frame $w.frame]
    grid $b -sticky news
    set f [ttk::labelframe $b.title -text [mc "Variable values:"]]
    foreach var $args {
	ttk::label $f.n$var -text "$var:" -anchor w
	ttk::label $f.v$var -textvariable $var -anchor w
	grid $f.n$var $f.v$var -padx 2 -pady 2 -sticky w
    }
    ttk::button $b.ok -text [mc "OK"] \
	-command [list destroy $w] -default active
    bind $w <Return> [list $b.ok invoke]
    bind $w <Escape> [list $b.ok invoke]

    grid $f -sticky news -padx 4
    grid $b.ok -sticky e -padx 4 -pady {6 4}
    if {[tk windowingsystem] eq "aqua"} {
	$b.ok configure -takefocus 0
	grid configure $b.ok -pady {10 12} -padx {16 18}
	grid configure $f -padx 10 -pady {10 0}
    }
    grid columnconfig $f 1 -weight 1
    grid rowconfigure $f 100 -weight 1
    grid columnconfig $b 0 -weight 1
    grid rowconfigure $b 0 -weight 1
    grid columnconfig $w 0 -weight 1
    grid rowconfigure $w 0 -weight 1
}

# invoke --
# This procedure is called when the user clicks on a demo description. It is
# responsible for invoking the demonstration.
#
# Arguments:
# index -	The index of the character that the user clicked on.

proc invoke index {
    global tk_demoDirectory
    set tags [.t tag names $index]
    set i [lsearch -glob $tags demo-*]
    if {$i < 0} {
	return
    }
    set cursor [.t cget -cursor]
    .t configure -cursor [::ttk::cursor busy]
    update
    set demo [string range [lindex $tags $i] 5 end]
    uplevel 1 [list source -encoding utf-8 [file join $tk_demoDirectory $demo.tcl]]
    update
    .t configure -cursor $cursor

    .t tag add visited "$index linestart +1 chars" "$index lineend -1 chars"
}

# showStatus --
#
#	Show the name of the demo program in the status bar. This procedure is
#	called when the user moves the cursor over a demo description.
#
proc showStatus index {
    set tags [.t tag names $index]
    set i [lsearch -glob $tags demo-*]
    set cursor [.t cget -cursor]
    if {$i < 0} {
	.statusBar.lab config -text " "
	set newcursor [::ttk::cursor text]
    } else {
	set demo [string range [lindex $tags $i] 5 end]
	.statusBar.lab config -text [mc "Run the \"%s\" sample program" $demo]
	set newcursor [::ttk::cursor link]
    }
    if {$cursor ne $newcursor} {
	.t config -cursor $newcursor
    }
}

# evalShowCode --
#
# Arguments:
# w -		Name of text widget containing code to eval

proc evalShowCode {w} {
    set code [$w get 1.0 end-1c]
    uplevel #0 $code
}

# showCode --
# This procedure creates a toplevel window that displays the code for a
# demonstration and allows it to be edited and reinvoked.
#
# Arguments:
# w -		The name of the demonstration's window, which can be used to
#		derive the name of the file containing its code.

proc showCode w {
    global tk_demoDirectory
    set file [string range $w 1 end].tcl
    set top .code
    if {![winfo exists $top]} {
	toplevel $top
	if {[tk windowingsystem] eq "x11"} {wm attributes $top -type dialog}

	set t [frame $top.f]
	set text [text $t.text -font fixedFont -height 24 -wrap word \
		      -xscrollcommand [list $t.xscroll set] \
		      -yscrollcommand [list $t.yscroll set] \
		      -setgrid 1 -highlightthickness 0 -pady 2 -padx 3]
	ttk::scrollbar $t.xscroll -command [list $t.text xview] \
	    -orient horizontal
	ttk::scrollbar $t.yscroll -command [list $t.text yview] \
	    -orient vertical

	grid $t.text $t.yscroll -sticky news
	#grid $t.xscroll
	grid rowconfigure $t 0 -weight 1
	grid columnconfig $t 0 -weight 1

	set btns [ttk::frame $top.btns]
	ttk::separator $btns.sep
	grid $btns.sep -columnspan 4 -row 0 -sticky ew -pady 2
	ttk::button $btns.dismiss -text [mc "Dismiss"] \
	    -default active -command [list destroy $top] \
	    -image ::img::delete -compound left
	ttk::button $btns.print   -text [mc "Print Code"] \
	    -command [list printCode $text $file] \
	    -image ::img::print -compound left
	ttk::button $btns.rerun   -text [mc "Rerun Demo"] \
	    -command [list evalShowCode $text] \
	    -image ::img::refresh -compound left
	set buttons [list x $btns.rerun $btns.print $btns.dismiss]
	grid {*}$buttons -padx 4 -pady 4
	grid columnconfigure $btns 0 -weight 1
	if {[tk windowingsystem] eq "aqua"} {
	    foreach b [lrange $buttons 1 end] {$b configure -takefocus 0}
	    grid configure $btns.sep -pady 0
	    grid configure {*}$buttons -pady {10 12}
	    grid configure [lindex $buttons 1] -padx {16 4}
	    grid configure [lindex $buttons end] -padx {4 18}
	}
	grid $t    -sticky news
	grid $btns -sticky ew
	grid rowconfigure $top 0 -weight 1
	grid columnconfig $top 0 -weight 1

	bind $top <Return> {
	    if {[winfo class %W] ne "Text"} { .code.btns.dismiss invoke }
	}
	bind $top <Escape> [bind $top <Return>]
    } else {
	wm deiconify $top
	raise $top
    }
    wm title $top [mc "Demo code: %s" [file join $tk_demoDirectory $file]]
    wm iconname $top $file
    set id [open [file join $tk_demoDirectory $file]]
    fconfigure $id -encoding utf-8 -eofchar "\032 {}"
    $top.f.text delete 1.0 end
    $top.f.text insert 1.0 [read $id]
    $top.f.text mark set insert 1.0
    close $id
}

# printCode --
# Prints the source code currently displayed in the See Code dialog. Much
# thanks to Arjen Markus for this.
#
# Arguments:
# w -		Name of text widget containing code to print
# file -		Name of the original file (implicitly for title)

proc printCode {w file} {
    set code [$w get 1.0 end-1c]

    set dir "."
    if {[info exists ::env(HOME)]} {
	set dir "$::env(HOME)"
    }
    if {[info exists ::env(TMP)]} {
	set dir $::env(TMP)
    }
    if {[info exists ::env(TEMP)]} {
	set dir $::env(TEMP)
    }

    set filename [file join $dir "tkdemo-$file"]
    set outfile [open $filename "w"]
    puts $outfile $code
    close $outfile

    switch -- $::tcl_platform(platform) {
	unix {
	    if {[catch {exec lp -c $filename} msg]} {
		tk_messageBox -title "Print spooling failure" \
			-message "Print spooling probably failed: $msg"
	    }
	}
	windows {
	    if {[catch {PrintTextWin32 $filename} msg]} {
		tk_messageBox -title "Print spooling failure" \
			-message "Print spooling probably failed: $msg"
	    }
	}
	default {
	    tk_messageBox -title "Operation not Implemented" \
		    -message "Wow! Unknown platform: $::tcl_platform(platform)"
	}
    }

    #
    # Be careful to throw away the temporary file in a gentle manner ...
    #
    if {[file exists $filename]} {
	catch {file delete $filename}
    }
}

# PrintTextWin32 --
#    Print a file under Windows using all the "intelligence" necessary
#
# Arguments:
# filename -		Name of the file
#
# Note:
# Taken from the Wiki page by Keith Vetter, "Printing text files under
# Windows".
# Note:
# Do not execute the command in the background: that way we can dispose of the
# file smoothly.
#
proc PrintTextWin32 {filename} {
    package require registry
    set app [auto_execok notepad.exe]
    set pcmd "$app /p %1"
    catch {
	set app [registry get {HKEY_CLASSES_ROOT\.txt} {}]
	set pcmd [registry get \
		{HKEY_CLASSES_ROOT\\$app\\shell\\print\\command} {}]
    }

    regsub -all {%1} $pcmd $filename pcmd
    puts $pcmd

    regsub -all {\\} $pcmd {\\\\} pcmd
    set command "[auto_execok start] /min $pcmd"
    eval exec $command
}

# tkAboutDialog --
#
#	Pops up a message box with an "about" message
#
proc tkAboutDialog {} {
    tk_messageBox -icon info -type ok -title [mc "About Widget Demo"] \
	    -message [mc "Tk widget demonstration application"] -detail \
"[mc "Copyright \xA9 %s" {1996-1997 Sun Microsystems, Inc.}]
[mc "Copyright \xA9 %s" {1997-2000 Ajuba Solutions, Inc.}]
[mc "Copyright \xA9 %s" {2001-2009 Donal K. Fellows}]
[mc "Copyright \xA9 %s" {2002-2007 Daniel A. Steffen}]"
}

# Local Variables:
# mode: tcl
# End: