From Newsgroup: comp.lang.tcl

Tk recognises a lot of colour names, as documented at, say, https://www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible to
get a list of them?

I guess I could hack it out of one of the source files, but I'd hope to
be able to get it in a cleaner fashion.
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From Newsgroup: comp.lang.tcl

* Alan Grunwald <nospam.nurdglaw@gmail.com>
| Tk recognises a lot of colour names, as documented at, say,
| https://www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible
| to get a list of them?

| I guess I could hack it out of one of the source files, but I'd hope
| to be able to get it in a cleaner fashion.

That would probably be xlib/xcolors.c with a very tricky table and
binary search algo.

Note that the plain text doc/colors.n contains at least one error
('agua' vs 'aqua').

R'
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From Newsgroup: comp.lang.tcl

Alan Grunwald wrote:

Tk recognises a lot of colour names, as documented at, say, https://www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible
to get a list of them?

I guess I could hack it out of one of the source files, but I'd hope
to be able to get it in a cleaner fashion.

They're listed in the Tk html docs under 'colors'.
--
*********** To reply by e-mail, make w single in address **************
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From Newsgroup: comp.lang.tcl

Are these colors any different from the X11 colors, listed in /usr/share/X11/rgb.txt ?
At Mon, 19 May 2025 09:49:11 -0700 Ian <gay@sfuu.ca> wrote:

Alan Grunwald wrote:

Tk recognises a lot of colour names, as documented at, say, https://www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible
to get a list of them?

I guess I could hack it out of one of the source files, but I'd hope
to be able to get it in a cleaner fashion.

They're listed in the Tk html docs under 'colors'.

--
Robert Heller -- Cell: 413-658-7953 GV: 978-633-5364
Deepwoods Software -- Custom Software Services
http://www.deepsoft.com/ -- Linux Administration Services
heller@deepsoft.com -- Webhosting Services
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From Newsgroup: comp.lang.tcl

Robert Heller wrote:

Are these colors any different from the X11 colors, listed in /usr/share/X11/rgb.txt ?

Hard to compare, the ordering is different. They look pretty similar superficially.

At Mon, 19 May 2025 09:49:11 -0700 Ian <gay@sfuu.ca> wrote:

Alan Grunwald wrote:

Tk recognises a lot of colour names, as documented at, say,
https://www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it
possible to get a list of them?

I guess I could hack it out of one of the source files, but I'd
hope to be able to get it in a cleaner fashion.

They're listed in the Tk html docs under 'colors'.

--
*********** To reply by e-mail, make w single in address **************
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From Newsgroup: comp.lang.tcl

On 5/19/2025 7:05 AM, Alan Grunwald wrote:

Tk recognises a lot of colour names, as documented at, say, https://www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible to get a list of them?

I guess I could hack it out of one of the source files, but I'd hope to be able to get it in a cleaner fashion.

What sort of format do you want? Are there others that this page doesn't document?

I displayed the above link in FF, and then did a click, move pointer to end, shift click, copy, paste into my editor, and made a text file, a:/colors.txt. There were 8360 lines, looking like:

alice blue


240


248


255

AliceBlue


240


248


255

...


YellowGreen


154


205


50

So, each color took up 11 lines, and multi-word names appeared on a single line. So, exactly 760 colors on that page.

Very easy to process with a small tcl script. I didn't look at the system specific colors however.


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From Newsgroup: comp.lang.tcl

On 19/05/2025 20:04, Robert Heller wrote:

Are these colors any different from the X11 colors, listed in /usr/share/X11/rgb.txt ?

Yes, there are a few small differences. See tip 403: https://core.tcl-lang.org/tips/doc/trunk/tip/403.md


Schelte.

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From Newsgroup: comp.lang.tcl

Am 19.05.2025 um 16:05 schrieb Alan Grunwald:

Tk recognises a lot of colour names, as documented at, say, https:// www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible to get a
list of them?

I guess I could hack it out of one of the source files, but I'd hope to
be able to get it in a cleaner fashion.

Alan,
this is a long awaited low hanging fruit in Tk.
An "tkinfo colornames" should be implemented.

I would love to use it in colour chooser dropdown boxes etc.

Thanks,
Harald
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From Newsgroup: comp.lang.tcl

On 20/05/2025 09:32, Harald Oehlmann wrote:

Am 19.05.2025 um 16:05 schrieb Alan Grunwald:

Tk recognises a lot of colour names, as documented at, say, https://
www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible to get a
list of them?

I guess I could hack it out of one of the source files, but I'd hope
to be able to get it in a cleaner fashion.

Alan,
this is a long awaited low hanging fruit in Tk.
An "tkinfo colornames" should be implemented.

I would love to use it in colour chooser dropdown boxes etc.

Thanks,
Harald

Thanks Harald,

That indeed is what I hope to use it for. I'm going to parse rgb.txt as recommended elsewhere. At times like this, I wish I understood the
Tcl/Tk internals better; I might have a go at implimenting [tkinfo colournames] myself - I'm a Brit, I look forward to the
colournames/colornames argument :-)

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From Newsgroup: comp.lang.tcl

On 19/05/2025 19:04, Robert Heller wrote:

Are these colors any different from the X11 colors, listed in /usr/share/X11/rgb.txt ?

Thanks Robert. I'll have a go at parsing rgb.txt

Alan
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From Newsgroup: comp.lang.tcl


Alan Grunwald <nospam.nurdglaw@gmail.com> posted:

Tk recognises a lot of colour names, as documented at, say, https://www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible to
get a list of them?

I guess I could hack it out of one of the source files, but I'd hope to
be able to get it in a cleaner fashion.

Most color pickers have a list of them. The most useful is probably this one ( https://wiki.tcl-lang.org/page/Color+pickers ) because of its hexedecimalcorresponding values.

Olivier.
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From Newsgroup: comp.lang.tcl

Am 19.05.25 um 16:05 schrieb Alan Grunwald:

Tk recognises a lot of colour names, as documented at, say, https:// www.tcl-lang.org/man/tcl9.0/TkCmd/colors.html Is it possible to get a
list of them?

I guess I could hack it out of one of the source files, but I'd hope to
be able to get it in a cleaner fashion.

I need a list of color names.
Linux Debian:
/usr/share/X11/rgb.txt
or
https://gitlab.freedesktop.org/xorg/app/rgb/raw/master/rgb.txt

or
in the demo directory is a file with color name
file join $::tk_library demos colors.tcl


Then use winfo to check. https://www.tcl-lang.org/man/tcl8.6/TkCmd/winfo.htm#M30


}
package require Tk

#the proc can only read rgb.txt
proc readRgbFile {rgbFile} {
set fh [open $rgbFile r]
set db {}
while {[gets $fh line] >= 0} {
if {[string match {!*} $line]} continue
set name [lassign $line r g b]
set hex [format "#%02X%02X%02X" $r $g $b]
# Use {-1 -1 -1} if in list, or continue if not recognized
set winfo [expr {[catch {winfo rgb . $name} msg] ? [continue] : $msg}]
#set winfo [expr {[catch {winfo rgb . $name} msg] ? {-1 -1 -1} : $msg}]
dict set db $name [dict create r $r g $g b $b hex $hex winfo $winfo]
}
close $fh
return $db
}
set namergb [readRgbFile rgb.txt]
#set namergb [readRgbFile /usr/share/X11/rgb.txt]
foreach sc {red green lime blue white black yellow "DebianRed"} {
if {[dict exists $namergb $sc]} {
puts "searchColor $sc: [dict get $namergb $sc]"
} else {
puts "searchColor $sc: Not found"
}
}


# or just a proc for checking
proc colorExists {color} {
return [expr {![catch {winfo rgb . $color}]}]
}



if {0} {
#Output:
./nn-example.tcl


searchColor red: r 255 g 0 b 0 hex #FF0000 winfo {65535 0 0}
searchColor green: r 0 g 255 b 0 hex #00FF00 winfo {0 32896 0}
searchColor lime: r 0 g 255 b 0 hex #00FF00 winfo {0 65535 0}
searchColor blue: r 0 g 0 b 255 hex #0000FF winfo {0 0 65535}
searchColor white: r 255 g 255 b 255 hex #FFFFFF winfo {65535 65535 65535} searchColor black: r 0 g 0 b 0 hex #000000 winfo {0 0 0}
searchColor yellow: r 255 g 255 b 0 hex #FFFF00 winfo {65535 65535 0} searchColor debianred: Not found


}
best regards
Gregor

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