1%D \module 2%D [ file=colo-grp, 3%D version=2011.12.27, % moved from colo-ini 4%D title=\CONTEXT\ Color Macros, 5%D subtitle=Groups, 6%D author=Hans Hagen, 7%D date=\currentdate, 8%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] 9%C 10%C This module is part of the \CONTEXT\ macro||package and is 11%C therefore copyrighted by \PRAGMA. See mreadme.pdf for 12%C details. 13 14%D Regular colors and palets are used most, contrary to groups 15%D which is why we define their support in a separate module. 16 17\writestatus{loading}{ConTeXt Color Macros / Groups} 18 19\unprotect 20 21%D \macros 22%D {definecolorgroup} 23%D 24%D The naming of the colors in this palet suggests some 25%D ordening, which in turn is suported by color grouping. 26%D 27%D \starttyping 28%D \definecolorgroup 29%D [red] 30%D [1.00:0.90:0.90, 31%D 1.00:0.80:0.80, 32%D 1.00:0.70:0.70, 33%D 1.00:0.55:0.55, 34%D 1.00:0.40:0.40, 35%D 1.00:0.25:0.25, 36%D 1.00:0.15:0.15, 37%D 0.90:0.00:0.00] 38%D \stoptyping 39%D 40%D In such a color group colors are numbered from~$1$ to~$n$. 41%D 42%D \showsetup{definecolorgroup} 43%D 44%D This kind of specification is not only more compact than 45%D defining each color separate, it also loads faster and takes 46%D less bytes. 47 48\installcorenamespace{colorgroup} 49\installcorenamespace{colorgroupsetter} 50 51\newcount\c_colo_groups_n % scratch counter 52 53\unexpanded\def\definecolorgroup % sort of obsolete, just use palets directly 54 {\dotripleempty\colo_groups_define} 55 56\def\colo_groups_define 57 {\ifthirdargument 58 \expandafter\colo_groups_define_normal 59 \else 60 \expandafter\colo_groups_define_checked 61 \fi} 62 63\def\colo_groups_define_normal[#1][#2][#3]% 64 {\c_colo_groups_n\zerocount 65 \processcommalist[#3]{\colo_groups_define_entry{#1}{#2}}} 66 67\def\colo_groups_define_checked[#1][#2][#3]% 68 {\doifelseinstring{:}{#2} 69 {\colo_groups_define_normal[#1][\v!rgb][#2]} 70 {\doloop % inherited 71 {\ifcsname#2:##1\endcsname 72 \definecolor[#1:##1][#2:##1]% 73 \else 74 \exitloop 75 \fi}}} 76 77\def\colo_groups_define_entry#1#2#3% name mode specification 78 {\advance\c_colo_groups_n\plusone 79 \csname\??colorgroupsetter\ifcsname\??colorgroupsetter#2\endcsname#2\else\s!rgb\fi\endcsname[#1:\the\c_colo_groups_n][#3:0:0:0:0]} 80 81\setvalue{\??colorgroupsetter\s!gray}[#1][#2:#3]{\definecolor[#1][s=#2]} 82\setvalue{\??colorgroupsetter\s!rgb }[#1][#2:#3:#4:#5]{\definecolor[#1][r=#2,g=#3,b=#4]} 83\setvalue{\??colorgroupsetter\s!cmyk}[#1][#2:#3:#4:#5:#6]{\definecolor[#1][c=#2,m=#3=,y=#4,k=#5]} 84\setvalue{\??colorgroupsetter\s!spot}[#1][#2:#3:#4]{\definespotcolor[#1][#2][p=#3]} 85 86%D \macros 87%D {showcolorgroup} 88%D 89%D We can show the group by: 90%D 91%D \startbuffer 92%D \showcolorgroup [blue] [horizontal,name,number,value] 93%D \stopbuffer 94%D 95%D \typebuffer 96%D 97%D or in color: 98%D 99%D \startlinecorrection 100%D \getbuffer 101%D \stoplinecorrection 102%D 103%D which uses: 104%D 105%D \showsetup{showcolorgroup} 106 107\fetchruntimecommand \showcolorgroup \f!colo_run 108 109%D There are ten predefined color groups, like 110%D \color[green]{\em groen}, \color[red]{\em rood}, 111%D \color[blue]{\em blauw}, \color[cyan]{\em cyaan}, 112%D \color[magenta]{\em magenta} and \color[yellow]{\em geel}. 113%D 114%D \startlinecorrection 115%D \hbox to \hsize 116%D {\hss 117%D \showcolorgroup [red] [vertical,name,number]\hss 118%D \showcolorgroup [green] [vertical,name]\hss 119%D \showcolorgroup [blue] [vertical,name]\hss 120%D \showcolorgroup [cyan] [vertical,name]\hss 121%D \showcolorgroup [magenta][vertical,name]\hss 122%D \showcolorgroup [yellow] [vertical,name]\hss} 123%D \stoplinecorrection 124%D 125%D These groups are used to define palets {\em alfa} upto {\em 126%D zeta}. As long as we don't use colors from the same row, we 127%D get ourselves distinctive palets. By activating such a palet 128%D one gains access to its members {\em top} to {\em charm} (of 129%D course one should use more suitable names than these). 130%D 131%D \startlinecorrection 132%D \hbox to \hsize 133%D {\showpalet [alfa] [vertical,name,number]\hss 134%D \showpalet [beta] [vertical,name]\hss 135%D \showpalet [gamma] [vertical,name]\hss 136%D \showpalet [delta] [vertical,name]\hss 137%D \showpalet [epsilon] [vertical,name]\hss 138%D \showpalet [zeta] [vertical,name]} 139%D \stoplinecorrection 140%D 141%D By using the keyword \type {value} the individual color 142%D components are shown too. When printed in color, these 143%D showcases show both the colors and the gray value. 144 145%D \macros 146%D {comparecolorgroup} 147%D 148%D The similar command: 149%D 150%D \startbuffer 151%D \comparecolorgroup [blue] 152%D \stopbuffer 153%D 154%D \typebuffer 155%D 156%D shows color groups: 157%D 158%D \startlinecorrection 159%D \getbuffer 160%D \stoplinecorrection 161%D 162%D this commands are defined as: 163%D 164%D \showsetup{comparecolorgroup} 165 166\fetchruntimecommand \comparecolorgroup \f!colo_run 167 168\protect \endinput 169 |
