This file is indexed.

/usr/share/tcltk/tk8.6/clrpick.tcl is in libtk8.6 8.6.6-1+b1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
# clrpick.tcl --
#
#	Color selection dialog for platforms that do not support a
#	standard color selection dialog.
#
# Copyright (c) 1996 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# ToDo:
#
#	(1): Find out how many free colors are left in the colormap and
#	     don't allocate too many colors.
#	(2): Implement HSV color selection.
#

# Make sure namespaces exist
namespace eval ::tk {}
namespace eval ::tk::dialog {}
namespace eval ::tk::dialog::color {
    namespace import ::tk::msgcat::*
}

# ::tk::dialog::color:: --
#
#	Create a color dialog and let the user choose a color. This function
#	should not be called directly. It is called by the tk_chooseColor
#	function when a native color selector widget does not exist
#
proc ::tk::dialog::color:: {args} {
    variable ::tk::Priv
    set dataName __tk__color
    upvar ::tk::dialog::color::$dataName data
    set w .$dataName

    # The lines variables track the start and end indices of the line
    # elements in the colorbar canvases.
    set data(lines,red,start)   0
    set data(lines,red,last)   -1
    set data(lines,green,start) 0
    set data(lines,green,last) -1
    set data(lines,blue,start)  0
    set data(lines,blue,last)  -1

    # This is the actual number of lines that are drawn in each color strip.
    # Note that the bars may be of any width.
    # However, NUM_COLORBARS must be a number that evenly divides 256.
    # Such as 256, 128, 64, etc.
    set data(NUM_COLORBARS) 16

    # BARS_WIDTH is the number of pixels wide the color bar portion of the
    # canvas is. This number must be a multiple of NUM_COLORBARS
    set data(BARS_WIDTH) 160

    # PLGN_WIDTH is the number of pixels wide of the triangular selection
    # polygon. This also results in the definition of the padding on the
    # left and right sides which is half of PLGN_WIDTH. Make this number even.
    set data(PLGN_HEIGHT) 10

    # PLGN_HEIGHT is the height of the selection polygon and the height of the
    # selection rectangle at the bottom of the color bar. No restrictions.
    set data(PLGN_WIDTH) 10

    Config $dataName $args
    InitValues $dataName

    set sc [winfo screen $data(-parent)]
    set winExists [winfo exists $w]
    if {!$winExists || $sc ne [winfo screen $w]} {
	if {$winExists} {
	    destroy $w
	}
	toplevel $w -class TkColorDialog -screen $sc
	if {[tk windowingsystem] eq "x11"} {wm attributes $w -type dialog}
	BuildDialog $w
    }

    # Dialog boxes should be transient with respect to their parent,
    # so that they will always stay on top of their parent window.  However,
    # some window managers will create the window as withdrawn if the parent
    # window is withdrawn or iconified.  Combined with the grab we put on the
    # window, this can hang the entire application.  Therefore we only make
    # the dialog transient if the parent is viewable.

    if {[winfo viewable [winfo toplevel $data(-parent)]] } {
	wm transient $w $data(-parent)
    }

    # 5. Withdraw the window, then update all the geometry information
    # so we know how big it wants to be, then center the window in the
    # display (Motif style) and de-iconify it.

    ::tk::PlaceWindow $w widget $data(-parent)
    wm title $w $data(-title)

    # 6. Set a grab and claim the focus too.

    ::tk::SetFocusGrab $w $data(okBtn)

    # 7. Wait for the user to respond, then restore the focus and
    # return the index of the selected button.  Restore the focus
    # before deleting the window, since otherwise the window manager
    # may take the focus away so we can't redirect it.  Finally,
    # restore any grab that was in effect.

    vwait ::tk::Priv(selectColor)
    set result $Priv(selectColor)
    ::tk::RestoreFocusGrab $w $data(okBtn)
    unset data

    return $result
}

# ::tk::dialog::color::InitValues --
#
#	Get called during initialization or when user resets NUM_COLORBARS
#
proc ::tk::dialog::color::InitValues {dataName} {
    upvar ::tk::dialog::color::$dataName data

    # IntensityIncr is the difference in color intensity between a colorbar
    # and its neighbors.
    set data(intensityIncr) [expr {256 / $data(NUM_COLORBARS)}]

    # ColorbarWidth is the width of each colorbar
    set data(colorbarWidth) [expr {$data(BARS_WIDTH) / $data(NUM_COLORBARS)}]

    # Indent is the width of the space at the left and right side of the
    # colorbar. It is always half the selector polygon width, because the
    # polygon extends into the space.
    set data(indent) [expr {$data(PLGN_WIDTH) / 2}]

    set data(colorPad) 2
    set data(selPad)   [expr {$data(PLGN_WIDTH) / 2}]

    #
    # minX is the x coordinate of the first colorbar
    #
    set data(minX) $data(indent)

    #
    # maxX is the x coordinate of the last colorbar
    #
    set data(maxX) [expr {$data(BARS_WIDTH) + $data(indent)-1}]

    #
    # canvasWidth is the width of the entire canvas, including the indents
    #
    set data(canvasWidth) [expr {$data(BARS_WIDTH) + $data(PLGN_WIDTH)}]

    # Set the initial color, specified by -initialcolor, or the
    # color chosen by the user the last time.
    set data(selection) $data(-initialcolor)
    set data(finalColor)  $data(-initialcolor)
    set rgb [winfo rgb . $data(selection)]

    set data(red,intensity)   [expr {[lindex $rgb 0]/0x100}]
    set data(green,intensity) [expr {[lindex $rgb 1]/0x100}]
    set data(blue,intensity)  [expr {[lindex $rgb 2]/0x100}]
}

# ::tk::dialog::color::Config  --
#
#	Parses the command line arguments to tk_chooseColor
#
proc ::tk::dialog::color::Config {dataName argList} {
    variable ::tk::Priv
    upvar ::tk::dialog::color::$dataName data

    # 1: the configuration specs
    #
    if {[info exists Priv(selectColor)] && $Priv(selectColor) ne ""} {
	set defaultColor $Priv(selectColor)
    } else {
	set defaultColor [. cget -background]
    }

    set specs [list \
	    [list -initialcolor "" "" $defaultColor] \
	    [list -parent "" "" "."] \
	    [list -title "" "" [mc "Color"]] \
	    ]

    # 2: parse the arguments
    #
    tclParseConfigSpec ::tk::dialog::color::$dataName $specs "" $argList

    if {$data(-title) eq ""} {
	set data(-title) " "
    }
    if {[catch {winfo rgb . $data(-initialcolor)} err]} {
	return -code error -errorcode [list TK LOOKUP COLOR $data(-initialcolor)] \
	    $err
    }

    if {![winfo exists $data(-parent)]} {
	return -code error -errorcode [list TK LOOKUP WINDOW $data(-parent)] \
	    "bad window path name \"$data(-parent)\""
    }
}

# ::tk::dialog::color::BuildDialog --
#
#	Build the dialog.
#
proc ::tk::dialog::color::BuildDialog {w} {
    upvar ::tk::dialog::color::[winfo name $w] data

    # TopFrame contains the color strips and the color selection
    #
    set topFrame [frame $w.top -relief raised -bd 1]

    # StripsFrame contains the colorstrips and the individual RGB entries
    set stripsFrame [frame $topFrame.colorStrip]

    set maxWidth [::tk::mcmaxamp &Red &Green &Blue]
    set maxWidth [expr {$maxWidth<6 ? 6 : $maxWidth}]
    set colorList {
	red   "&Red"
	green "&Green"
	blue  "&Blue"
    }
    foreach {color l} $colorList {
	# each f frame contains an [R|G|B] entry and the equiv. color strip.
	set f [frame $stripsFrame.$color]

	# The box frame contains the label and entry widget for an [R|G|B]
	set box [frame $f.box]

	::tk::AmpWidget label $box.label -text "[mc $l]:" \
		-width $maxWidth -anchor ne
	bind $box.label <<AltUnderlined>> [list focus $box.entry]

	entry $box.entry -textvariable \
		::tk::dialog::color::[winfo name $w]($color,intensity) \
		-width 4
	pack $box.label -side left -fill y -padx 2 -pady 3
	pack $box.entry -side left -anchor n -pady 0
	pack $box -side left -fill both

	set height [expr {
	    [winfo reqheight $box.entry] -
	    2*([$box.entry cget -highlightthickness] + [$box.entry cget -bd])
	}]

	canvas $f.color -height $height \
		-width $data(BARS_WIDTH) -relief sunken -bd 2
	canvas $f.sel -height $data(PLGN_HEIGHT) \
		-width $data(canvasWidth) -highlightthickness 0
	pack $f.color -expand yes -fill both
	pack $f.sel -expand yes -fill both

	pack $f -side top -fill x -padx 0 -pady 2

	set data($color,entry) $box.entry
	set data($color,col) $f.color
	set data($color,sel) $f.sel

	bind $data($color,col) <Configure> \
		[list tk::dialog::color::DrawColorScale $w $color 1]
	bind $data($color,col) <Enter> \
		[list tk::dialog::color::EnterColorBar $w $color]
	bind $data($color,col) <Leave> \
		[list tk::dialog::color::LeaveColorBar $w $color]

	bind $data($color,sel) <Enter> \
		[list tk::dialog::color::EnterColorBar $w $color]
	bind $data($color,sel) <Leave> \
		[list tk::dialog::color::LeaveColorBar $w $color]

	bind $box.entry <Return> [list tk::dialog::color::HandleRGBEntry $w]
    }

    pack $stripsFrame -side left -fill both -padx 4 -pady 10

    # The selFrame contains a frame that demonstrates the currently
    # selected color
    #
    set selFrame [frame $topFrame.sel]
    set lab [::tk::AmpWidget label $selFrame.lab \
	    -text [mc "&Selection:"] -anchor sw]
    set ent [entry $selFrame.ent \
	    -textvariable ::tk::dialog::color::[winfo name $w](selection) \
	    -width 16]
    set f1  [frame $selFrame.f1 -relief sunken -bd 2]
    set data(finalCanvas) [frame $f1.demo -bd 0 -width 100 -height 70]

    pack $lab $ent -side top -fill x -padx 4 -pady 2
    pack $f1 -expand yes -anchor nw -fill both -padx 6 -pady 10
    pack $data(finalCanvas) -expand yes -fill both

    bind $ent <Return> [list tk::dialog::color::HandleSelEntry $w]

    pack $selFrame -side left -fill none -anchor nw
    pack $topFrame -side top -expand yes -fill both -anchor nw

    # the botFrame frame contains the buttons
    #
    set botFrame [frame $w.bot -relief raised -bd 1]

    ::tk::AmpWidget button $botFrame.ok     -text [mc "&OK"]		\
	    -command [list tk::dialog::color::OkCmd $w]
    ::tk::AmpWidget button $botFrame.cancel -text [mc "&Cancel"]	\
	    -command [list tk::dialog::color::CancelCmd $w]

    set data(okBtn)      $botFrame.ok
    set data(cancelBtn)  $botFrame.cancel

    grid x $botFrame.ok x $botFrame.cancel x -sticky ew
    grid configure $botFrame.ok $botFrame.cancel -padx 10 -pady 10
    grid columnconfigure $botFrame {0 4} -weight 1 -uniform space
    grid columnconfigure $botFrame {1 3} -weight 1 -uniform button
    grid columnconfigure $botFrame 2 -weight 2 -uniform space
    pack $botFrame -side bottom -fill x

    # Accelerator bindings
    bind $lab <<AltUnderlined>> [list focus $ent]
    bind $w <KeyPress-Escape> [list tk::ButtonInvoke $data(cancelBtn)]
    bind $w <Alt-Key> [list tk::AltKeyInDialog $w %A]

    wm protocol $w WM_DELETE_WINDOW [list tk::dialog::color::CancelCmd $w]
    bind $lab <Destroy> [list tk::dialog::color::CancelCmd $w]
}

# ::tk::dialog::color::SetRGBValue --
#
#	Sets the current selection of the dialog box
#
proc ::tk::dialog::color::SetRGBValue {w color} {
    upvar ::tk::dialog::color::[winfo name $w] data

    set data(red,intensity)   [lindex $color 0]
    set data(green,intensity) [lindex $color 1]
    set data(blue,intensity)  [lindex $color 2]

    RedrawColorBars $w all

    # Now compute the new x value of each colorbars pointer polygon
    foreach color {red green blue} {
	set x [RgbToX $w $data($color,intensity)]
	MoveSelector $w $data($color,sel) $color $x 0
    }
}

# ::tk::dialog::color::XToRgb --
#
#	Converts a screen coordinate to intensity
#
proc ::tk::dialog::color::XToRgb {w x} {
    upvar ::tk::dialog::color::[winfo name $w] data

    set x [expr {($x * $data(intensityIncr))/ $data(colorbarWidth)}]
    if {$x > 255} {
	set x 255
    }
    return $x
}

# ::tk::dialog::color::RgbToX
#
#	Converts an intensity to screen coordinate.
#
proc ::tk::dialog::color::RgbToX {w color} {
    upvar ::tk::dialog::color::[winfo name $w] data

    return [expr {($color * $data(colorbarWidth)/ $data(intensityIncr))}]
}

# ::tk::dialog::color::DrawColorScale --
#
#	Draw color scale is called whenever the size of one of the color
#	scale canvases is changed.
#
proc ::tk::dialog::color::DrawColorScale {w c {create 0}} {
    upvar ::tk::dialog::color::[winfo name $w] data

    # col: color bar canvas
    # sel: selector canvas
    set col $data($c,col)
    set sel $data($c,sel)

    # First handle the case that we are creating everything for the first time.
    if {$create} {
	# First remove all the lines that already exist.
	if { $data(lines,$c,last) > $data(lines,$c,start)} {
	    for {set i $data(lines,$c,start)} \
		    {$i <= $data(lines,$c,last)} {incr i} {
		$sel delete $i
	    }
	}
	# Delete the selector if it exists
	if {[info exists data($c,index)]} {
	    $sel delete $data($c,index)
	}

	# Draw the selection polygons
	CreateSelector $w $sel $c
	$sel bind $data($c,index) <ButtonPress-1> \
		[list tk::dialog::color::StartMove $w $sel $c %x $data(selPad) 1]
	$sel bind $data($c,index) <B1-Motion> \
		[list tk::dialog::color::MoveSelector $w $sel $c %x $data(selPad)]
	$sel bind $data($c,index) <ButtonRelease-1> \
		[list tk::dialog::color::ReleaseMouse $w $sel $c %x $data(selPad)]

	set height [winfo height $col]
	# Create an invisible region under the colorstrip to catch mouse clicks
	# that aren't on the selector.
	set data($c,clickRegion) [$sel create rectangle 0 0 \
		$data(canvasWidth) $height -fill {} -outline {}]

	bind $col <ButtonPress-1> \
		[list tk::dialog::color::StartMove $w $sel $c %x $data(colorPad)]
	bind $col <B1-Motion> \
		[list tk::dialog::color::MoveSelector $w $sel $c %x $data(colorPad)]
	bind $col <ButtonRelease-1> \
		[list tk::dialog::color::ReleaseMouse $w $sel $c %x $data(colorPad)]

	$sel bind $data($c,clickRegion) <ButtonPress-1> \
		[list tk::dialog::color::StartMove $w $sel $c %x $data(selPad)]
	$sel bind $data($c,clickRegion) <B1-Motion> \
		[list tk::dialog::color::MoveSelector $w $sel $c %x $data(selPad)]
	$sel bind $data($c,clickRegion) <ButtonRelease-1> \
		[list tk::dialog::color::ReleaseMouse $w $sel $c %x $data(selPad)]
    } else {
	# l is the canvas index of the first colorbar.
	set l $data(lines,$c,start)
    }

    # Draw the color bars.
    set highlightW [expr {[$col cget -highlightthickness] + [$col cget -bd]}]
    for {set i 0} { $i < $data(NUM_COLORBARS)} { incr i} {
	set intensity [expr {$i * $data(intensityIncr)}]
	set startx [expr {$i * $data(colorbarWidth) + $highlightW}]
	if {$c eq "red"} {
	    set color [format "#%02x%02x%02x" \
		    $intensity $data(green,intensity) $data(blue,intensity)]
	} elseif {$c eq "green"} {
	    set color [format "#%02x%02x%02x" \
		    $data(red,intensity) $intensity $data(blue,intensity)]
	} else {
	    set color [format "#%02x%02x%02x" \
		    $data(red,intensity) $data(green,intensity) $intensity]
	}

	if {$create} {
	    set index [$col create rect $startx $highlightW \
		    [expr {$startx +$data(colorbarWidth)}] \
		    [expr {[winfo height $col] + $highlightW}] \
		    -fill $color -outline $color]
	} else {
	    $col itemconfigure $l -fill $color -outline $color
	    incr l
	}
    }
    $sel raise $data($c,index)

    if {$create} {
	set data(lines,$c,last) $index
	set data(lines,$c,start) [expr {$index - $data(NUM_COLORBARS) + 1}]
    }

    RedrawFinalColor $w
}

# ::tk::dialog::color::CreateSelector --
#
#	Creates and draws the selector polygon at the position
#	$data($c,intensity).
#
proc ::tk::dialog::color::CreateSelector {w sel c } {
    upvar ::tk::dialog::color::[winfo name $w] data
    set data($c,index) [$sel create polygon \
	    0 $data(PLGN_HEIGHT) \
	    $data(PLGN_WIDTH) $data(PLGN_HEIGHT) \
	    $data(indent) 0]
    set data($c,x) [RgbToX $w $data($c,intensity)]
    $sel move $data($c,index) $data($c,x) 0
}

# ::tk::dialog::color::RedrawFinalColor
#
#	Combines the intensities of the three colors into the final color
#
proc ::tk::dialog::color::RedrawFinalColor {w} {
    upvar ::tk::dialog::color::[winfo name $w] data

    set color [format "#%02x%02x%02x" $data(red,intensity) \
	    $data(green,intensity) $data(blue,intensity)]

    $data(finalCanvas) configure -bg $color
    set data(finalColor) $color
    set data(selection) $color
    set data(finalRGB) [list \
	    $data(red,intensity) \
	    $data(green,intensity) \
	    $data(blue,intensity)]
}

# ::tk::dialog::color::RedrawColorBars --
#
# Only redraws the colors on the color strips that were not manipulated.
# Params: color of colorstrip that changed. If color is not [red|green|blue]
#         Then all colorstrips will be updated
#
proc ::tk::dialog::color::RedrawColorBars {w colorChanged} {
    upvar ::tk::dialog::color::[winfo name $w] data

    switch $colorChanged {
	red {
	    DrawColorScale $w green
	    DrawColorScale $w blue
	}
	green {
	    DrawColorScale $w red
	    DrawColorScale $w blue
	}
	blue {
	    DrawColorScale $w red
	    DrawColorScale $w green
	}
	default {
	    DrawColorScale $w red
	    DrawColorScale $w green
	    DrawColorScale $w blue
	}
    }
    RedrawFinalColor $w
}

#----------------------------------------------------------------------
#			Event handlers
#----------------------------------------------------------------------

# ::tk::dialog::color::StartMove --
#
#	Handles a mousedown button event over the selector polygon.
#	Adds the bindings for moving the mouse while the button is
#	pressed.  Sets the binding for the button-release event.
#
# Params: sel is the selector canvas window, color is the color of the strip.
#
proc ::tk::dialog::color::StartMove {w sel color x delta {dontMove 0}} {
    upvar ::tk::dialog::color::[winfo name $w] data

    if {!$dontMove} {
	MoveSelector $w $sel $color $x $delta
    }
}

# ::tk::dialog::color::MoveSelector --
#
# Moves the polygon selector so that its middle point has the same
# x value as the specified x. If x is outside the bounds [0,255],
# the selector is set to the closest endpoint.
#
# Params: sel is the selector canvas, c is [red|green|blue]
#         x is a x-coordinate.
#
proc ::tk::dialog::color::MoveSelector {w sel color x delta} {
    upvar ::tk::dialog::color::[winfo name $w] data

    incr x -$delta

    if { $x < 0 } {
	set x 0
    } elseif { $x > $data(BARS_WIDTH)} {
	set x $data(BARS_WIDTH)
    }
    set diff [expr {$x - $data($color,x)}]
    $sel move $data($color,index) $diff 0
    set data($color,x) [expr {$data($color,x) + $diff}]

    # Return the x value that it was actually set at
    return $x
}

# ::tk::dialog::color::ReleaseMouse
#
# Removes mouse tracking bindings, updates the colorbars.
#
# Params: sel is the selector canvas, color is the color of the strip,
#         x is the x-coord of the mouse.
#
proc ::tk::dialog::color::ReleaseMouse {w sel color x delta} {
    upvar ::tk::dialog::color::[winfo name $w] data

    set x [MoveSelector $w $sel $color $x $delta]

    # Determine exactly what color we are looking at.
    set data($color,intensity) [XToRgb $w $x]

    RedrawColorBars $w $color
}

# ::tk::dialog::color::ResizeColorbars --
#
#	Completely redraws the colorbars, including resizing the
#	colorstrips
#
proc ::tk::dialog::color::ResizeColorBars {w} {
    upvar ::tk::dialog::color::[winfo name $w] data

    if {
	($data(BARS_WIDTH) < $data(NUM_COLORBARS)) ||
	(($data(BARS_WIDTH) % $data(NUM_COLORBARS)) != 0)
    } then {
	set data(BARS_WIDTH) $data(NUM_COLORBARS)
    }
    InitValues [winfo name $w]
    foreach color {red green blue} {
	$data($color,col) configure -width $data(canvasWidth)
	DrawColorScale $w $color 1
    }
}

# ::tk::dialog::color::HandleSelEntry --
#
#	Handles the return keypress event in the "Selection:" entry
#
proc ::tk::dialog::color::HandleSelEntry {w} {
    upvar ::tk::dialog::color::[winfo name $w] data

    set text [string trim $data(selection)]
    # Check to make sure that the color is valid
    if {[catch {set color [winfo rgb . $text]} ]} {
	set data(selection) $data(finalColor)
	return
    }

    set R [expr {[lindex $color 0]/0x100}]
    set G [expr {[lindex $color 1]/0x100}]
    set B [expr {[lindex $color 2]/0x100}]

    SetRGBValue $w "$R $G $B"
    set data(selection) $text
}

# ::tk::dialog::color::HandleRGBEntry --
#
#	Handles the return keypress event in the R, G or B entry
#
proc ::tk::dialog::color::HandleRGBEntry {w} {
    upvar ::tk::dialog::color::[winfo name $w] data

    foreach c {red green blue} {
	if {[catch {
	    set data($c,intensity) [expr {int($data($c,intensity))}]
	}]} {
	    set data($c,intensity) 0
	}

	if {$data($c,intensity) < 0} {
	    set data($c,intensity) 0
	}
	if {$data($c,intensity) > 255} {
	    set data($c,intensity) 255
	}
    }

    SetRGBValue $w "$data(red,intensity) \
	$data(green,intensity) $data(blue,intensity)"
}

# mouse cursor enters a color bar
#
proc ::tk::dialog::color::EnterColorBar {w color} {
    upvar ::tk::dialog::color::[winfo name $w] data

    $data($color,sel) itemconfigure $data($color,index) -fill red
}

# mouse leaves enters a color bar
#
proc ::tk::dialog::color::LeaveColorBar {w color} {
    upvar ::tk::dialog::color::[winfo name $w] data

    $data($color,sel) itemconfigure $data($color,index) -fill black
}

# user hits OK button
#
proc ::tk::dialog::color::OkCmd {w} {
    variable ::tk::Priv
    upvar ::tk::dialog::color::[winfo name $w] data

    set Priv(selectColor) $data(finalColor)
}

# user hits Cancel button or destroys window
#
proc ::tk::dialog::color::CancelCmd {w} {
    variable ::tk::Priv
    set Priv(selectColor) ""
}