/usr/share/plplot5.10.0/tcl/plcolor.tcl is in plplot-tcl 5.10.0+dfsg2-0.4+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#----------------------------------------------------------------------------
# Color palette editors in iTcl for PLPlot.
# Maurice LeBrun
# 13-Apr-1994
# IFS, University of Texas at Austin
#
# Conversion to iTcl by Vince Darley.
# Based on the very nice pixmap editor by Sam Shen (sls@aero.org)
# Also some code taken from "coloredit.tk" (author?)
#----------------------------------------------------------------------------
#----------------------------------------------------------------------------
# plfile_open
#
# A simple proc to get a file for i/o, with some error checking.
#----------------------------------------------------------------------------
proc plfile_open {op} {
set file [getPaletteFile]
if { [string index $file 0] == "~" } {
set file [glob ~][string trimleft $file ~]
}
if { [string length $file] > 0 } {
if {$op == "r"} {
if { ! [file readable $file] } {
bogue_out "Can't read file $file"
return {}
}
return $file
}
if {$op == "w"} {
if { [file exists $file] } {
if {![confirm "File $file already exists. Are you sure?"]} {
return {}
}
}
if { [catch {open $file w} f] } {
bogue_out "Can't write to file $file"
return {}
} else {
close $f
return $file
}
}
} else {
bogue_out "No file specified"
return {}
}
}
#----------------------------------------------------------------------------
# ColorEditor is ripped off from the Tk demo program tcolor.
# This version differs from the one by Sam Shen in that:
#
# 1. Only 8 bits is retained for each RGB component. I find this to be
# clearer and easier to deal with than the default 16 bits used by X.
# In addition, plplot only wants 8 bits and most devices only display 8
# bits. The main disadvantage is that there is more roundoff when
# switching between color spaces.
# 2. HSL color space is used instead of HSV (or HSB). I'm just more used
# to HSL.
# 3. Hue goes from 0 to 359 (degrees).
# 4. Saturation and Lightness go from 0 to 100. I'd really prefer 0 to 1
# but TK doesn't support floating point scales yet, so this is the next
# best thing.
#----------------------------------------------------------------------------
set colorSpace hsl
eval package require $pl_itcl_package_name
itcl::class ColorEditor {
private variable r 255
private variable g 0
private variable b 0
private variable color "#ff0000"
private variable updating 0
private variable name ""
private variable w .ceditor
private variable ok 0
method run {{_color gray} {cmd none} {instance {}} args} {
global colorSpace
set color $_color
catch {destroy $w}
toplevel $w
wm title $w "Color Editor"
frame $w.buttons
radiobutton $w.rgb -text "RGB" -variable colorSpace \
-value rgb -relief flat \
-command "$this changeColorSpace rgb"
radiobutton $w.cmy -text "CMY" -variable colorSpace \
-value cmy -relief flat \
-command "$this changeColorSpace cmy"
radiobutton $w.hsl -text "HSL" -variable colorSpace \
-value hsl -relief flat \
-command "$this changeColorSpace hsl"
button $w.ok -text "Ok" -command "$this ok"
button $w.cancel -text "Cancel" -command "$this cancel"
pack append $w.buttons \
$w.rgb "left padx 4" \
$w.cmy "left padx 4" \
$w.hsl "left padx 4" \
$w.cancel "right padx 4 pady 2" \
$w.ok "right padx 4 pady 2"
frame $w.left
foreach i {1 2 3} {
frame $w.left$i
label $w.label$i
scale $w.scale$i -from 0 -to 255 -length 10c -orient horizontal \
-command "$this colChanged $cmd $instance $args"
button $w.up$i -width 2 -text + \
-command "$this inc $i 1"
button $w.down$i -width 2 -text - \
-command "$this inc $i -1"
pack append $w.left$i \
$w.label$i {top frame w} \
$w.down$i {left padx .5c} \
$w.scale$i left \
$w.up$i {left padx .5c}
pack append $w.left $w.left$i "top expand"
}
frame $w.right
frame $w.swatch -width 2c -height 5c -background $color
global gen_fixed_font
label $w.value -text $color -width 13 -font $gen_fixed_font
pack append $w.right \
$w.swatch {top expand fill} \
$w.value {bottom pady .5c}
pack append $w \
$w.buttons "top fillx" \
$w.left "left expand filly" \
$w.right "right padx .5c pady .5c frame s"
loadNamedColor $color
changeColorSpace $colorSpace
grab set $w
tkwait window $w
if {$ok} {
return $color
} else {
return {}
}
}
method cancel {} {
set ok 0
destroy $w
}
method ok {} {
set ok 1
destroy $w
}
method inc {i inc} {
$w.scale$i set [expr [$w.scale$i get]+$inc]
}
method colChanged {cmd instance args} {
if {$updating} {
return
}
global colorSpace
if {$colorSpace == "rgb"} {
set r [format %.0f [$w.scale1 get]]
set g [format %.0f [$w.scale2 get]]
set b [format %.0f [$w.scale3 get]]
}
if {$colorSpace == "cmy"} {
set r [format %.0f [expr {255 - [$w.scale1 get]}]]
set g [format %.0f [expr {255 - [$w.scale2 get]}]]
set b [format %.0f [expr {255 - [$w.scale3 get]}]]
}
if {$colorSpace == "hsl"} {
set list [hslToRgb \
[expr {[$w.scale1 get]}] \
[expr {[$w.scale2 get]/100.0}] \
[expr {[$w.scale3 get]/100.0}]]
set r [format %.0f [expr [lindex $list 0]*255]]
set g [format %.0f [expr [lindex $list 1]*255]]
set b [format %.0f [expr [lindex $list 2]*255]]
}
set color [format "#%02x%02x%02x" $r $g $b]
$w.swatch config -bg $color
$w.value config -text $color
if { $cmd != "none" } {
$cmd $instance $args $color
}
update idletasks
}
method setScales {} {
set updating 1
global colorSpace
if {$colorSpace == "rgb"} {
$w.scale1 config -to 255
$w.scale2 config -to 255
$w.scale3 config -to 255
$w.scale1 set [format %.0f $r]
$w.scale2 set [format %.0f $g]
$w.scale3 set [format %.0f $b]
}
if {$colorSpace == "cmy"} {
$w.scale1 config -to 255
$w.scale2 config -to 255
$w.scale3 config -to 255
$w.scale1 set [format %.0f [expr (255-$r)]]
$w.scale2 set [format %.0f [expr (255-$g)]]
$w.scale3 set [format %.0f [expr (255-$b)]]
}
if {$colorSpace == "hsl"} {
$w.scale1 config -to 359
$w.scale2 config -to 100
$w.scale3 config -to 100
set list [rgbToHsl $r $g $b]
$w.scale1 set [format %.0f [expr {[lindex $list 0]}]]
$w.scale2 set [format %.0f [expr {[lindex $list 1] * 100.0}]]
$w.scale3 set [format %.0f [expr {[lindex $list 2] * 100.0}]]
}
set updating 0
}
method loadNamedColor name {
if {[string index $name 0] != "#"} {
set list [winfo rgb $w.swatch $name]
set r [lindex $list 0]
set g [lindex $list 1]
set b [lindex $list 2]
} else {
case [string length $name] {
4 {set format "#%1x%1x%1x"; set shift 12}
7 {set format "#%2x%2x%2x"; set shift 8}
10 {set format "#%3x%3x%3x"; set shift 4}
13 {set format "#%4x%4x%4x"; set shift 0}
default {error "syntax error in color name \"$name\""}
}
if {[scan $name $format r g b] != 3} {
error "syntax error in color name \"$name\""
}
set r [expr $r<<$shift]
set g [expr $g<<$shift]
set b [expr $b<<$shift]
}
set r [expr $r>>8]
set g [expr $g>>8]
set b [expr $b>>8]
set color [format "#%02x%02x%02x" $r $g $b]
setScales
$w.swatch config -bg $color
$w.value config -text $name
}
method setLabels {l1 l2 l3} {
$w.label1 config -text $l1
$w.label2 config -text $l2
$w.label3 config -text $l3
}
method changeColorSpace space {
global colorSpace
set colorSpace $space
if {$space == "rgb"} {
setLabels Red Green Blue
setScales
return
}
if {$space == "cmy"} {
setLabels Cyan Magenta Yellow
setScales
return
}
if {$space == "hsl"} {
setLabels Hue Saturation Lightness
setScales
return
}
}
method rgbToHsl {r g b} {
set r [expr $r/255.0]
set g [expr $g/255.0]
set b [expr $b/255.0]
set MIN [min $r $g $b]
set MAX [max $r $g $b]
set l [expr ($MIN+$MAX)/2.0]
if {$MIN == $MAX} {
set s 0
set h 0
} else {
if {$l < 0.5} {
set s [expr ($MAX-$MIN)/($MAX+$MIN)]
} else {
set s [expr ($MAX-$MIN)/(2.0-$MAX-$MIN)]
}
set d [expr $MAX-$MIN]
set rc [expr ($MAX-$r)/$d]
set gc [expr ($MAX-$g)/$d]
set bc [expr ($MAX-$b)/$d]
if {$r == $MAX} {
set h [expr $bc-$gc]
} else {
if {$g == $MAX} {
set h [expr $rc-$bc+2]
} else {
set h [expr $gc-$rc-2]
}
}
set h [expr {$h*60}]
if {$h < 0} {set h [expr $h+360]}
if {$h >= 360} {set h [expr $h-360]}
}
set h [format %.0f $h]
return [list $h $s $l]
}
method value {n1 n2 h} {
while {$h > 360} {set h [expr {$h-360}]}
while {$h < 0} {set h [expr {$h+360}]}
if {$h < 60} {
set val [expr {$n1+($n2-$n1)*$h/60.}]
} elseif {$h < 180} {
set val $n2
} elseif {$h < 240} {
set val [expr {$n1+($n2-$n1)*(240-$h)/60.}]
} else {
set val $n1
}
return $val
}
method hslToRgb {h s l} {
if {$l <= 0.5} {
set m2 [expr {$l*($s+1)}]
} else {
set m2 [expr {$l+$s-$l*$s}]
}
set m1 [expr {2*$l-$m2}]
set r [value $m1 $m2 [expr {$h+120}]]
set g [value $m1 $m2 $h]
set b [value $m1 $m2 [expr {$h-120}]]
return "$r $g $b"
}
}
#----------------------------------------------------------------------------
# Color map 0 editor
#
# For now, the colors are only actually set when you punch the OK button.
# Eventually they will be dynamically set (best to use a custom color
# map in this case so only the color cell values need to be changed).
#----------------------------------------------------------------------------
# Buttons0 implements the buttons on the main window.
itcl::class Buttons0 {
constructor {w plot plw} {
frame $w
button $w.savep -text "Save Palette" \
-command "$this savePalette"
button $w.loadp -text "Load Palette" \
-command "$this loadPalette $plot $plw"
button $w.ok -text "OK" \
-command "$this ok"
pack append $w \
$w.savep "left fill expand" \
$w.loadp "left fill expand" \
$w.ok "left fill expand"
return $w
}
method ok {} {
destroy .edit
}
method savePalette {} {
global palette
$palette savePalette
}
method loadPalette {plot plw} {
global palette
$palette loadPalette $plot $plw
}
}
# ColorPalette0 implements the color palette.
itcl::class ColorPalette0 {
variable w {}
variable editor {}
constructor {_w plot plw} {
set w $_w
global ncol0 plcmap0_col
frame $w -bd 2 -relief raised
set cmap0 [$plot gcmap0]
set ncol0 [lindex $cmap0 0]
for {set i 0} {$i < $ncol0} {incr i} {
set plcmap0_col($i) [lindex $cmap0 [expr $i+1]]
frame $w.$i
label $w.$i.color -width 14 \
-anchor w
button $w.$i.patch -text Edit \
-command "$this edit $i $plot $plw"
pack append $w.$i \
$w.$i.color "right frame e" \
$w.$i.patch "left padx 4 pady 4 frame w"
pack append $w $w.$i "top fillx"
}
loadcmap
set editor [ColorEditor \#auto]
return $w
}
method savePalette {} {
set file [plfile_open w]
if {$file != {}} {
set f [open $file "w"]
global ncol0
puts $f "$ncol0"
for {set i 0} {$i < $ncol0} {incr i} {
set color [getColor $i]
puts $f "$color"
}
close $f
}
}
method loadPalette {plot plw} {
set file [plfile_open r]
if {$file != {}} {
global ncol0 plcmap0_col
set f [open $file "r"]
set ncol0 [gets $f]
if {$ncol0 < 0 || $ncol0 > 255} {
bogue_out "Illegal number of colors: $ncol0"
close $f
return
}
for {set i 0} {$i < $ncol0} {incr i} {
set line [gets $f]
set plcmap0_col($i) [lindex $line 0]
}
close $f
setcmap $plot $plw
destroy .edit.palette
ColorPalette0 \#auto .edit.palette $plot $plw
pack append .edit .edit.palette "left filly"
}
}
method loadcmap {} {
global ncol0 plcmap0_col
for {set i 0} {$i < $ncol0} {incr i} {
$w.$i.color config -text $plcmap0_col($i)
$w.$i.patch config -background $plcmap0_col($i)
}
}
method edit {i plot plw} {
global ncol0 plcmap0_col
global plopt_static_redraw plopt_dynamic_redraw
set orig [getColor $i]
set color [$editor run \
[lindex [$w.$i.patch config -background] 4] \
$this colChanged $i $plot $plw]
if {$color != {}} {
set plcmap0_col($i) $color
} else {
set color $orig
}
$w.$i.color config -text $color
$w.$i.patch config -background $color
$plot scol0 $i $color
if $plopt_static_redraw($plw) {
$plot redraw
}
}
method colChanged {data color} {
global plopt_static_redraw plopt_dynamic_redraw
set i [lindex $data 0]
set plot [lindex $data 1]
set plw [lindex $data 2]
$w.$i.color config -text $color
$w.$i.patch config -background $color
$plot scol0 $i $color
if $plopt_dynamic_redraw($plw) {
$plot redraw
}
}
method setcmap {plot plw} {
global ncol0 plcmap0_col
global plopt_static_redraw plopt_dynamic_redraw
set cmap0 ""
for {set i 0} {$i < $ncol0} {incr i} {
set cmap0 "$cmap0 $plcmap0_col($i)"
}
$plot scmap0 $ncol0 $cmap0
if $plopt_static_redraw($plw) {
$plot redraw
}
}
method getColor {i} {
return [lindex [$w.$i.patch config -background] 4]
}
}
# External entry point
proc plcmap0_edit {plot plw} {
global ncol0 plcmap0_col palette
catch {destroy .edit}
toplevel .edit
dpos .edit
wm title .edit "Color Map 0 Editor"
wm iconname .edit "Cmap0 Editor"
wm minsize .edit 100 100
Buttons0 \#auto .edit.buttons $plot $plw
pack append .edit .edit.buttons \
"top fillx"
set palette [ColorPalette0 \#auto .edit.palette $plot $plw]
pack append .edit .edit.palette \
"left filly"
}
#----------------------------------------------------------------------------
# Color map 1 editor
#
# The default colors are set the first time this file is sourced.
#----------------------------------------------------------------------------
# Buttons1 implements the buttons on the main window.
itcl::class Buttons1 {
constructor {w plot plw} {
frame $w
button $w.savep -text "Save Palette" \
-command "$this savePalette"
button $w.loadp -text "Load Palette" \
-command "$this loadPalette $plot $plw"
button $w.ok -text "OK" \
-command "$this ok"
pack append $w \
$w.savep "left fill expand" \
$w.loadp "left fill expand" \
$w.ok "left fill expand"
return $w
}
method ok {} {
destroy .edit
}
method savePalette {} {
global palette
$palette savePalette
}
method loadPalette {plot plw} {
global palette
$palette loadPalette $plot $plw
}
}
# ColorPalette1 implements the color palette.
#
# Anchor the position of each control point by its neighboring control points.
# The ones at the end must stay fixed.
itcl::class ColorPalette1 {
variable w {}
variable editor {}
constructor {_w plot plw} {
set w $_w
global ncol1 plcmap1_col plcmap1_pos plcmap1_rev
frame $w -bd 2 -relief flat
frame $w.l -bd 2 -relief flat
frame $w.r -bd 2 -relief flat
frame $w.lab
global gen_font
label $w.lab.color -font $gen_font -relief flat -text "Color"
label $w.lab.pos -relief flat -text "Position in cmap1 space"
label $w.lab.rev -relief flat -text "Reverse"
pack append $w.lab \
$w.lab.color \
{left padx 50}
pack append $w.lab \
$w.lab.rev \
{right fillx}
pack append $w.lab \
$w.lab.pos \
{right padx 200}
set cmap1 [$plot gcmap1]
set ncol1 [lindex $cmap1 0]
for {set i 0} {$i < $ncol1} {incr i} {
set plcmap1_col($i) [lindex $cmap1 [expr 3*$i+1]]
set plcmap1_pos($i) [lindex $cmap1 [expr 3*$i+2]]
set plcmap1_rev($i) [lindex $cmap1 [expr 3*$i+3]]
frame $w.l.$i
label $w.l.$i.color -width 14 -anchor w
button $w.l.$i.patch -text Edit \
-command "$this edit $i $plot $plw"
scale $w.l.$i.scale -from 0 -to 100 -length 8c \
-orient horizontal \
-command "$this posChanged $i $plot $plw"
# I only decorate the movable sliders (i.e. not endpoints) by +/-
# buttons. But the sliders themselves are a good visual cue as to
# what's going on so they get to stay.
if {$i == 0 || $i == $ncol1-1} {
pack append $w.l.$i \
$w.l.$i.scale "right expand padx 8 pady 4"
} else {
button $w.l.$i.up -width 2 -text + \
-command "$this inc $i 1"
button $w.l.$i.down -width 2 -text - \
-command "$this inc $i -1"
pack append $w.l.$i \
$w.l.$i.up "right padx .5c" \
$w.l.$i.scale "right expand padx 8 pady 4" \
$w.l.$i.down "right padx .5c"
}
pack append $w.l.$i \
$w.l.$i.color "right frame e" \
$w.l.$i.patch "left padx 4 pady 4 frame w"
pack append $w.l $w.l.$i "top fillx"
}
# Reverse button -- indicates hue interpolation to be done around back
# side.
for {set i 0} {$i < $ncol1} {incr i} {
frame $w.r.$i
if {$i < $ncol1-1} {
checkbutton $w.r.$i.rev \
-variable plcmap1_rev($i) -relief flat \
-command "$this setcmap $plot $plw"
pack append $w.r.$i \
$w.r.$i.rev "right padx .5c"
}
pack append $w.r $w.r.$i "top filly expand"
}
$this loadcmap
set editor [ColorEditor \#auto]
pack append $w \
$w.lab "top fillx" \
$w.l "left" \
$w.r "right filly expand"
return $w
}
method savePalette {} {
set file [plfile_open w]
if {$file != {}} {
set f [open $file "w"]
global ncol1 plcmap1_pos plcmap1_rev
puts $f "$ncol1"
for {set i 0} {$i < $ncol1} {incr i} {
set color [$this getColor $i]
puts $f "$color $plcmap1_pos($i) $plcmap1_rev($i)"
}
close $f
}
}
method loadPalette {plot plw} {
set file [plfile_open r]
if {$file != {}} {
set f [open $file "r"]
global ncol1 plcmap1_col plcmap1_pos plcmap1_rev
set ncol1 [gets $f]
if {$ncol1 < 0 || $ncol1 > 255} {
bogue_out "Illegal number of colors: $ncol1"
close $f
return
}
for {set i 0} {$i < $ncol1} {incr i} {
set line [gets $f]
set plcmap1_col($i) [lindex $line 0]
set plcmap1_pos($i) [lindex $line 1]
set plcmap1_rev($i) [lindex $line 2]
if {$plcmap1_rev($i) == {}} {
set plcmap1_rev($i) 0
}
}
close $f
setcmap $plot $plw
destroy .edit.palette
ColorPalette1 \#auto .edit.palette $plot $plw
pack append .edit .edit.palette "left filly"
}
}
method inc {i inc} {
$w.l.$i.scale set [expr [$w.l.$i.scale get]+$inc]
}
method posChanged {i plot plw args} {
global plcmap1_pos
set curr [getpos $i]
$w.l.$i.scale set $curr
set plcmap1_pos($i) $curr
setcmap $plot $plw 1
}
method getpos {i} {
global ncol1
if {$i == 0} {
return 0
}
if {$i == $ncol1-1} {
return 100
}
set l [expr $i-1]
set r [expr $i+1]
set prev [$w.l.$l.scale get]
set curr [$w.l.$i.scale get]
set next [$w.l.$r.scale get]
while { $curr < $prev } {
if { $l == 0 } break
$w.l.$l.scale set $curr
set plcmap1_pos($l) $curr
incr l -1
set prev [$w.l.$l.scale get]
}
while { $curr > $next } {
if { $r == $ncol1-1 } break
$w.l.$r.scale set $curr
set plcmap1_pos($r) $curr
incr r
set next [$w.l.$r.scale get]
}
return $curr
}
method loadcmap {} {
global ncol1 plcmap1_col plcmap1_pos
for {set i 0} {$i < $ncol1} {incr i} {
$w.l.$i.color config -text $plcmap1_col($i)
$w.l.$i.patch config -background $plcmap1_col($i)
$w.l.$i.scale set $plcmap1_pos($i)
}
}
method edit {i plot plw} {
global ncol1 plcmap1_col plcmap1_pos plcmap1_rev
global plopt_static_redraw plopt_dynamic_redraw
set orig [$this getColor $i]
set color [$editor run \
[lindex [$w.l.$i.patch config -background] 4] \
$this colChanged $i $plot $plw]
if {$color != {}} {
set plcmap1_col($i) $color
} else {
set color $orig
}
$w.l.$i.color config -text $color
$w.l.$i.patch config -background $color
$plot scol1 $i $color $plcmap1_pos($i) $plcmap1_rev($i)
if $plopt_static_redraw($plw) {
$plot redraw
}
}
method colChanged {data color} {
global plcmap1_pos plcmap1_rev
global plopt_static_redraw plopt_dynamic_redraw
set i [lindex $data 0]
set plot [lindex $data 1]
set plw [lindex $data 2]
$w.l.$i.color config -text $color
$w.l.$i.patch config -background $color
$plot scol1 $i $color $plcmap1_pos($i) $plcmap1_rev($i)
if $plopt_dynamic_redraw($plw) {
$plot redraw
}
}
method setcmap {plot plw {dynamic 0}} {
global ncol1 plcmap1_col plcmap1_pos plcmap1_rev
global plopt_static_redraw plopt_dynamic_redraw
set cmap1 ""
for {set i 0} {$i < $ncol1} {incr i} {
set cmap1 \
"$cmap1 $plcmap1_col($i) $plcmap1_pos($i) $plcmap1_rev($i)"
}
$plot scmap1 $ncol1 $cmap1
if { (!$dynamic && $plopt_static_redraw($plw)) ||
($dynamic && $plopt_dynamic_redraw($plw)) } {
$plot redraw
}
}
method getColor {i} {
return [lindex [$w.l.$i.patch config -background] 4]
}
}
# External entry point
proc plcmap1_edit {plot plw} {
global ncol1 plcmap1_col plcmap1_pos palette
catch {destroy .edit}
toplevel .edit
dpos .edit
wm title .edit "Color Map 1 Editor"
wm iconname .edit "Cmap1 Editor"
wm minsize .edit 100 100
Buttons1 \#auto .edit.buttons $plot $plw
pack append .edit .edit.buttons \
"top fillx"
set palette [ColorPalette1 \#auto .edit.palette $plot $plw]
pack append .edit .edit.palette \
"left filly"
}
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