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+# 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) ""
+}