10564b1175
groff 1.23.0 added .MR to its -man macro package. The NEWS file states
that the inclusion of the macro "was prompted by its introduction to
Plan 9 from User Space's troff in August 2020." From d32deab it seems
that the name for Plan 9 from User Space's implementation was suggested
by groff maintainer G. Brandon Robinson.
Not sure if the intention was to make these definitions compatible, but
it would be nice if they were.
Currently, Plan 9 from User Space's .MR expects its second argument to
be parenthesized. groff's .MR does not. This results in extra
parentheses appearing in manual references when viewing Plan 9 from User
Space's manual pages on a system using groff.
57 lines
1.1 KiB
Groff
57 lines
1.1 KiB
Groff
.TH COLORS 1
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.SH NAME
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colors, cmapcube \- display color map
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.SH SYNOPSIS
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.PP
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.B colors
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[
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.B -r
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.B -x
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]
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.PP
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.B cmapcube
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[
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.B -nbw
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]
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.SH DESCRIPTION
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.I Colors
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presents a grid showing the colors in the RGBV color map
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(see
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.MR color 7 ).
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.PP
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Clicking mouse button 1 over a color in the grid will display the map index for that color,
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its
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red, green, and blue components,
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and the 32-bit hexadecimal color value as defined in
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.MR allocimage 3 .
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If the
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.B -x
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option is specified, the components will also be listed in hexadecimal.
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.PP
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The
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.B -r
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option instead shows, in the same form, a grey-scale ramp.
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.PP
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A menu on mouse button 3 contains a single entry, to exit the program.
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.PP
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.I Cmapcube
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presents the same colors but in a 3-dimensional cube.
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Dragging with button 1 rotates the cube.
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Clicking on a color with button 2
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displays the map index for that color.
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Clicking button 3 exits.
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.PP
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The
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.B -n
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option disables drawing of the color squares.
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The
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.B -b
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and
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.B -w
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options set the background (default grey)
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to black or white.
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.SH SOURCE
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.B \*9/src/cmd/draw/colors.c
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.SH SEE ALSO
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.MR color 7
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