python-2.5.2/win32/tcl/tk8.4/clrpick.tcl
changeset 0 ae805ac0140d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python-2.5.2/win32/tcl/tk8.4/clrpick.tcl	Fri Apr 03 17:19:34 2009 +0100
@@ -0,0 +1,697 @@
+# clrpick.tcl --
+#
+#	Color selection dialog for platforms that do not support a
+#	standard color selection dialog.
+#
+# RCS: @(#) $Id: clrpick.tcl,v 1.20 2003/02/21 14:40:26 dkf Exp $
+#
+# 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 || [string compare $sc [winfo screen $w]]} {
+	if {$winExists} {
+	    destroy $w
+	}
+	toplevel $w -class TkColorDialog -screen $sc
+	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 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)
+    ::tk::RestoreFocusGrab $w $data(okBtn)
+    unset data
+
+    return $Priv(selectColor)
+}
+
+# ::tk::dialog::color::InitValues --
+#
+#	Get called during initialization or when user resets NUM_COLORBARS
+#
+proc ::tk::dialog::color::InitValues {dataName} {
+    upvar ::tk::dialog::color::$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)] && \
+	    [string compare $Priv(selectColor) ""]} {
+	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 {[string equal $data(-title) ""]} {
+	set data(-title) " "
+    }
+    if {[catch {winfo rgb . $data(-initialcolor)} err]} {
+	error $err
+    }
+
+    if {![winfo exists $data(-parent)]} {
+	error "bad window path name \"$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 [list \
+	    red		[mc "&Red"]	\
+	    green	[mc "&Green"]	\
+	    blue	[mc "&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]
+
+	bind [::tk::AmpWidget label $box.label -text $l: -width $maxWidth \
+	    -anchor ne] <<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]
+}
+
+# ::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 [list 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 {[string equal $c "red"]} {
+	    set color [format "#%02x%02x%02x" \
+			   $intensity \
+			   $data(green,intensity) \
+			   $data(blue,intensity)]
+	} elseif {[string equal $c "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)} {
+	set data(BARS_WIDTH) $data(NUM_COLORBARS)
+    }
+    InitValues [winfo name $w]
+    foreach color [list 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 $w] data
+
+    foreach c [list red green blue] {
+	if {[catch {
+	    set data($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) itemconfig $data($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) itemconfig $data($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
+#
+proc ::tk::dialog::color::CancelCmd {w} {
+    variable ::tk::Priv
+    set Priv(selectColor) ""
+}
+