tcolor
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:11k
- #!/bin/sh
- # the next line restarts using wish
- exec wish "$0" "$@"
- # tcolor --
- # This script implements a simple color editor, where you can
- # create colors using either the RGB, HSB, or CYM color spaces
- # and apply the color to existing applications.
- #
- # RCS: @(#) $Id: tcolor,v 1.3 2001/10/29 16:23:32 dkf Exp $
- wm title . "Color Editor"
- # Global variables that control the program:
- #
- # colorSpace - Color space currently being used for
- # editing. Must be "rgb", "cmy", or "hsb".
- # label1, label2, label3 - Labels for the scales.
- # red, green, blue - Current color intensities in decimal
- # on a scale of 0-65535.
- # color - A string giving the current color value
- # in the proper form for x:
- # #RRRRGGGGBBBB
- # updating - Non-zero means that we're in the middle of
- # updating the scales to load a new color,so
- # information shouldn't be propagating back
- # from the scales to other elements of the
- # program: this would make an infinite loop.
- # command - Holds the command that has been typed
- # into the "Command" entry.
- # autoUpdate - 1 means execute the update command
- # automatically whenever the color changes.
- # name - Name for new color, typed into entry.
- set colorSpace hsb
- set red 65535
- set green 0
- set blue 0
- set color #ffff00000000
- set updating 0
- set autoUpdate 1
- set name ""
- if {$tcl_platform(platform) eq "unix"} {
- option add *Entry.background white
- }
- # Create the menu bar at the top of the window.
- . configure -menu [menu .menu]
- menu .menu.file
- .menu add cascade -menu .menu.file -label File -underline 0
- .menu.file add radio -label "RGB color space" -variable colorSpace
- -value rgb -underline 0 -command {changeColorSpace rgb}
- .menu.file add radio -label "CMY color space" -variable colorSpace
- -value cmy -underline 0 -command {changeColorSpace cmy}
- .menu.file add radio -label "HSB color space" -variable colorSpace
- -value hsb -underline 0 -command {changeColorSpace hsb}
- .menu.file add separator
- .menu.file add radio -label "Automatic updates" -variable autoUpdate
- -value 1 -underline 0
- .menu.file add radio -label "Manual updates" -variable autoUpdate
- -value 0 -underline 0
- .menu.file add separator
- .menu.file add command -label "Exit program" -underline 0 -command {exit}
- # Create the command entry window at the bottom of the window, along
- # with the update button.
- labelframe .command -text "Command:" -padx {1m 0}
- entry .command.e -relief sunken -borderwidth 2 -textvariable command
- -font {Courier 12}
- button .command.update -text Update -command doUpdate
- pack .command.update -side right -pady .1c -padx {.25c 0}
- pack .command.e -expand yes -fill x -ipadx 0.25c
- # Create the listbox that holds all of the color names in rgb.txt,
- # if an rgb.txt file can be found.
- grid .command -sticky nsew -row 2 -columnspan 3 -padx 1m -pady {0 1m}
- grid columnconfigure . {1 2} -weight 1
- grid rowconfigure . 0 -weight 1
- foreach i {
- /usr/local/lib/X11/rgb.txt /usr/lib/X11/rgb.txt
- /X11/R5/lib/X11/rgb.txt /X11/R4/lib/rgb/rgb.txt
- /usr/openwin/lib/X11/rgb.txt
- } {
- if {![file readable $i]} {
- continue;
- }
- set f [open $i]
- labelframe .names -text "Select:" -padx .1c -pady .1c
- grid .names -row 0 -column 0 -sticky nsew -padx .15c -pady .15c -rowspan 2
- grid columnconfigure . 0 -weight 1
- listbox .names.lb -width 20 -height 12 -yscrollcommand ".names.s set"
- -relief sunken -borderwidth 2 -exportselection false
- bind .names.lb <Double-1> {
- tc_loadNamedColor [.names.lb get [.names.lb curselection]]
- }
- scrollbar .names.s -orient vertical -command ".names.lb yview"
- -relief sunken -borderwidth 2
- pack .names.lb .names.s -side left -fill y -expand 1
- while {[gets $f line] >= 0} {
- if {[regexp {^s*d+s+d+s+d+s+(S+)$} $line -> col]} {
- .names.lb insert end $col
- }
- }
- close $f
- break
- }
- # Create the three scales for editing the color, and the entry for
- # typing in a color value.
- frame .adjust
- foreach i {1 2 3} {
- label .adjust.l$i -textvariable label$i -pady 0
- labelframe .adjust.$i -labelwidget .adjust.l$i -padx 1m -pady 1m
- scale .scale$i -from 0 -to 1000 -length 6c -orient horizontal
- -command tc_scaleChanged
- pack .scale$i -in .adjust.$i
- pack .adjust.$i
- }
- grid .adjust -row 0 -column 1 -sticky nsew -padx .15c -pady .15c
- labelframe .name -text "Name:" -padx 1m -pady 1m
- entry .name.e -relief sunken -borderwidth 2 -textvariable name -width 10
- -font {Courier 12}
- pack .name.e -side right -expand 1 -fill x
- bind .name.e <Return> {tc_loadNamedColor $name}
- grid .name -column 1 -row 1 -sticky nsew -padx .15c -pady .15c
- # Create the color display swatch on the right side of the window.
- labelframe .sample -text "Color:" -padx 1m -pady 1m
- frame .sample.swatch -width 2c -height 5c -background $color
- label .sample.value -textvariable color -width 13 -font {Courier 12}
- pack .sample.swatch -side top -expand yes -fill both
- pack .sample.value -side bottom -pady .25c
- grid .sample -row 0 -column 2 -sticky nsew -padx .15c -pady .15c -rowspan 2
- # The procedure below is invoked when one of the scales is adjusted.
- # It propagates color information from the current scale readings
- # to everywhere else that it is used.
- proc tc_scaleChanged args {
- global red green blue colorSpace color updating autoUpdate
- if {$updating} {
- return
- }
- switch $colorSpace {
- rgb {
- set red [format %.0f [expr {[.scale1 get]*65.535}]]
- set green [format %.0f [expr {[.scale2 get]*65.535}]]
- set blue [format %.0f [expr {[.scale3 get]*65.535}]]
- }
- cmy {
- set red [format %.0f [expr {65535 - [.scale1 get]*65.535}]]
- set green [format %.0f [expr {65535 - [.scale2 get]*65.535}]]
- set blue [format %.0f [expr {65535 - [.scale3 get]*65.535}]]
- }
- hsb {
- set list [hsbToRgb [expr {[.scale1 get]/1000.0}]
- [expr {[.scale2 get]/1000.0}]
- [expr {[.scale3 get]/1000.0}]]
- set red [lindex $list 0]
- set green [lindex $list 1]
- set blue [lindex $list 2]
- }
- }
- set color [format "#%04x%04x%04x" $red $green $blue]
- .sample.swatch config -bg $color
- if {$autoUpdate} doUpdate
- update idletasks
- }
- # The procedure below is invoked to update the scales from the
- # current red, green, and blue intensities. It's invoked after
- # a change in the color space and after a named color value has
- # been loaded.
- proc tc_setScales {} {
- global red green blue colorSpace updating
- set updating 1
- switch $colorSpace {
- rgb {
- .scale1 set [format %.0f [expr {$red/65.535}]]
- .scale2 set [format %.0f [expr {$green/65.535}]]
- .scale3 set [format %.0f [expr {$blue/65.535}]]
- }
- cmy {
- .scale1 set [format %.0f [expr {(65535-$red)/65.535}]]
- .scale2 set [format %.0f [expr {(65535-$green)/65.535}]]
- .scale3 set [format %.0f [expr {(65535-$blue)/65.535}]]
- }
- hsb {
- set list [rgbToHsv $red $green $blue]
- .scale1 set [format %.0f [expr {[lindex $list 0] * 1000.0}]]
- .scale2 set [format %.0f [expr {[lindex $list 1] * 1000.0}]]
- .scale3 set [format %.0f [expr {[lindex $list 2] * 1000.0}]]
- }
- }
- set updating 0
- }
- # The procedure below is invoked when a named color has been
- # selected from the listbox or typed into the entry. It loads
- # the color into the editor.
- proc tc_loadNamedColor name {
- global red green blue color autoUpdate
- if {[string index $name 0] != "#"} {
- set list [winfo rgb .sample.swatch $name]
- set red [lindex $list 0]
- set green [lindex $list 1]
- set blue [lindex $list 2]
- } else {
- switch [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 $format red green blue] != 3} {
- error "syntax error in color name "$name""
- }
- set red [expr {$red<<$shift}]
- set green [expr {$green<<$shift}]
- set blue [expr {$blue<<$shift}]
- }
- tc_setScales
- set color [format "#%04x%04x%04x" $red $green $blue]
- .sample.swatch config -bg $color
- if {$autoUpdate} doUpdate
- }
- # The procedure below is invoked when a new color space is selected.
- # It changes the labels on the scales and re-loads the scales with
- # the appropriate values for the current color in the new color space
- proc changeColorSpace space {
- global label1 label2 label3
- switch $space {
- rgb {
- set label1 "Adjust Red:"
- set label2 "Adjust Green:"
- set label3 "Adjust Blue:"
- tc_setScales
- return
- }
- cmy {
- set label1 "Adjust Cyan:"
- set label2 "Adjust Magenta:"
- set label3 "Adjust Yellow:"
- tc_setScales
- return
- }
- hsb {
- set label1 "Adjust Hue:"
- set label2 "Adjust Saturation:"
- set label3 "Adjust Brightness:"
- tc_setScales
- return
- }
- }
- }
- # The procedure below converts an RGB value to HSB. It takes red, green,
- # and blue components (0-65535) as arguments, and returns a list containing
- # HSB components (floating-point, 0-1) as result. The code here is a copy
- # of the code on page 615 of "Fundamentals of Interactive Computer Graphics"
- # by Foley and Van Dam.
- proc rgbToHsv {red green blue} {
- if {$red > $green} {
- set max [expr {double($red)}]
- set min [expr {double($green)}]
- } else {
- set max [expr {double($green)}]
- set min [expr {double($red)}]
- }
- if {$blue > $max} {
- set max [expr {double($blue)}]
- } elseif {$blue < $min} {
- set min [expr {double($blue)}]
- }
- set range [expr {$max-$min}]
- if {$max == 0} {
- set sat 0
- } else {
- set sat [expr {($max-$min)/$max}]
- }
- if {$sat == 0} {
- set hue 0
- } else {
- set rc [expr {($max - $red)/$range}]
- set gc [expr {($max - $green)/$range}]
- set bc [expr {($max - $blue)/$range}]
- if {$red == $max} {
- set hue [expr {($bc - $gc)/6.0}]
- } elseif {$green == $max} {
- set hue [expr {(2 + $rc - $bc)/6.0}]
- } else {
- set hue [expr {(4 + $gc - $rc)/6.0}]
- }
- if {$hue < 0.0} {
- set hue [expr {$hue + 1.0}]
- }
- }
- return [list $hue $sat [expr {$max/65535}]]
- }
- # The procedure below converts an HSB value to RGB. It takes hue, saturation,
- # and value components (floating-point, 0-1.0) as arguments, and returns a
- # list containing RGB components (integers, 0-65535) as result. The code
- # here is a copy of the code on page 616 of "Fundamentals of Interactive
- # Computer Graphics" by Foley and Van Dam.
- proc hsbToRgb {hue sat value} {
- set v [format %.0f [expr {65535.0*$value}]]
- if {$sat == 0} {
- return "$v $v $v"
- } else {
- set hue [expr {$hue*6.0}]
- if {$hue >= 6.0} {
- set hue 0.0
- }
- scan $hue. %d i
- set f [expr {$hue-$i}]
- set p [format %.0f [expr {65535.0*$value*(1 - $sat)}]]
- set q [format %.0f [expr {65535.0*$value*(1 - ($sat*$f))}]]
- set t [format %.0f [expr {65535.0*$value*(1 - ($sat*(1 - $f)))}]]
- switch $i {
- 0 {return "$v $t $p"}
- 1 {return "$q $v $p"}
- 2 {return "$p $v $t"}
- 3 {return "$p $q $v"}
- 4 {return "$t $p $v"}
- 5 {return "$v $p $q"}
- default {error "i value $i is out of range"}
- }
- }
- }
- # The procedure below is invoked when the "Update" button is pressed,
- # and whenever the color changes if update mode is enabled. It
- # propagates color information as determined by the command in the
- # Command entry.
- proc doUpdate {} {
- global color command
- set newCmd $command
- regsub -all %% $command $color newCmd
- eval $newCmd
- }
- changeColorSpace hsb
- # Local Variables:
- # mode: tcl
- # End: