Difference between revisions of "Command/definecolor"
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{{Reference | {{Reference | ||
|name=definecolor | |name=definecolor | ||
Line 6: | Line 4: | ||
}} | }} | ||
+ | == [[Help:Reference|Syntax]] (autogenerated) == | ||
+ | <syntax>definecolor</syntax> | ||
== [[Help:Reference|Syntax]] == | == [[Help:Reference|Syntax]] == | ||
<table cellspacing="4" cellpadding="2" class="cmd"> | <table cellspacing="4" cellpadding="2" class="cmd"> | ||
Line 16: | Line 16: | ||
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:r|r]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] red channel (RGB)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:g|g]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] green channel (RGB)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:b|b]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] blue channel (RGB)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:c|c]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] cyan channel (CMYK)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:m|m]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] magenta channel (CMYK)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:y|y]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] yellow channel (CMYK)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:k|k]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] black channel (CMYK)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:s|s]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] gray value (Grayscale), if v isn't set</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:h|h]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] hue (HSB)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:s|s]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] saturation (HSB)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:v|v]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] brightness/value (HSB)</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:t|t]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] transparency factor</td> |
</tr> | </tr> | ||
<tr valign="top" class="second"> | <tr valign="top" class="second"> | ||
− | <td class="cmd">[[ | + | <td class="cmd">[[Command/keyword:a|a]]</td> |
− | <td>[[ | + | <td>[[Command/value:number|number]] alternative (transparency method)</td> |
+ | </tr> | ||
+ | <tr valign="top" class="second"> | ||
+ | <td class="cmd">[[Command/keyword:p|p]]</td> | ||
+ | <td>[[Command/value:number|number]] spotcolor percentage</td> | ||
+ | </tr> | ||
+ | <tr valign="top" class="second"> | ||
+ | <td class="cmd">[[Command/keyword:e|e]]</td> | ||
+ | <td>[[Command/value:text|text]] spotcolor name</td> | ||
+ | </tr> | ||
+ | <tr valign="top" class="second"> | ||
+ | <td class="cmd">[[Command/keyword:x|x]]</td> | ||
+ | <td>[[Command/value:text|text]] Hexadecimal RGB value (like in HTML), only with hex module</td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
− | |||
== Description == | == Description == | ||
− | < | + | <code>\definecolor</code> associates a name with a color, for later use with the |
− | \definecolor | + | <code>\color</code> command. |
− | \color | ||
− | </ | ||
− | To use hexadecimal colors you need to load the proper module first: | + | To use hexadecimal colors in mkii you need to load the proper module first: |
− | < | + | <texcode> |
\setupcolor[hex] | \setupcolor[hex] | ||
− | </ | + | </texcode> |
Then the colors can be specified with | Then the colors can be specified with | ||
− | < | + | <texcode> |
\definecolor[hex-red][h=FF0000] | \definecolor[hex-red][h=FF0000] | ||
− | </ | + | </texcode> |
+ | Regarding the key {{code|a}}, which means transparency alternative method, there are a certain number of values (actually at least 13, from 0 to 12) whose meanings can be seen from below: | ||
+ | <texcode> | ||
+ | \definetransparency [none] [0] | ||
+ | \definetransparency [normal] [1] | ||
+ | \definetransparency [multiply] [2] | ||
+ | \definetransparency [screen] [3] | ||
+ | \definetransparency [overlay] [4] | ||
+ | \definetransparency [softlight] [5] | ||
+ | \definetransparency [hardlight] [6] | ||
+ | \definetransparency [colordodge] [7] | ||
+ | \definetransparency [colorburn] [8] | ||
+ | \definetransparency [darken] [9] | ||
+ | \definetransparency [lighten] [10] | ||
+ | \definetransparency [difference] [11] | ||
+ | \definetransparency [exclusion] [12] | ||
+ | </texcode> | ||
+ | |||
+ | === Defining derivative colors === | ||
+ | |||
+ | Colors defined in terms of other colors are processed at the Lua end, unless they are direct clones. In that case, the new name is never told to Lua. That means that this does not work: | ||
+ | |||
+ | <texcode> | ||
+ | % direct clone, processed by TeX | ||
+ | \definecolor[ColorA][red] | ||
+ | % fails, ColorA not known to Lua | ||
+ | \definecolor[ColorB][.5(ColorA)] | ||
+ | </texcode> | ||
+ | |||
+ | Writing it as a fake fraction works. | ||
+ | |||
+ | <texcode> | ||
+ | % definition involves a fraction, processed by Lua. | ||
+ | \definecolor[ColorA][1.0(red)] | ||
+ | % succeeds | ||
+ | \definecolor[ColorB][.5(ColorA)] | ||
+ | </texcode> | ||
== Example == | == Example == | ||
− | <! | + | <context source=yes mode=mkiv> |
+ | % mode=mkiv | ||
+ | |||
+ | % rgb | ||
+ | \definecolor[bluu][r=.25, g = .1, b=1] | ||
+ | Hey, \color[bluu]{look at that!} | ||
+ | |||
+ | % hex | ||
+ | %\setupcolor[hex] % needed in mkii only | ||
+ | \definecolor[salmon][h=AB5757] | ||
+ | Hey, \color[salmon]{look at that!} | ||
+ | </context> | ||
== See also == | == See also == | ||
− | + | * [[Color]] | |
+ | * {{cmd|definetransparency}} | ||
+ | |||
+ | == Help from ConTeXt-Mailinglist/Forum == | ||
+ | All issues with: | ||
+ | {{Forum|{{SUBPAGENAME}}}} | ||
− | [[Category: | + | [[Category:Command/Colors|definecolor]] |
Revision as of 13:35, 13 October 2019
\definecolor
Syntax (autogenerated)
\definecolor[...][...=...,...] | |
[...] | name |
r | number |
g | number |
b | number |
c | number |
m | number |
y | number |
k | number |
h | number |
s | number |
v | number |
w | number |
x | number |
a | number none normal multiply screen overlay softlight hardlight colordodge colorburn darken lighten difference exclusion hue saturation color luminosity |
t | number |
\definecolor[...][...] | |
[...] | name |
[...] | color |
Syntax
\definecolor[...][...,...=...,...] | |
[...] | name |
r | number red channel (RGB) |
g | number green channel (RGB) |
b | number blue channel (RGB) |
c | number cyan channel (CMYK) |
m | number magenta channel (CMYK) |
y | number yellow channel (CMYK) |
k | number black channel (CMYK) |
s | number gray value (Grayscale), if v isn't set |
h | number hue (HSB) |
s | number saturation (HSB) |
v | number brightness/value (HSB) |
t | number transparency factor |
a | number alternative (transparency method) |
p | number spotcolor percentage |
e | text spotcolor name |
x | text Hexadecimal RGB value (like in HTML), only with hex module |
Description
\definecolor
associates a name with a color, for later use with the
\color
command.
To use hexadecimal colors in mkii you need to load the proper module first:
\setupcolor[hex]
Then the colors can be specified with
\definecolor[hex-red][h=FF0000]
Regarding the key a
, which means transparency alternative method, there are a certain number of values (actually at least 13, from 0 to 12) whose meanings can be seen from below:
\definetransparency [none] [0] \definetransparency [normal] [1] \definetransparency [multiply] [2] \definetransparency [screen] [3] \definetransparency [overlay] [4] \definetransparency [softlight] [5] \definetransparency [hardlight] [6] \definetransparency [colordodge] [7] \definetransparency [colorburn] [8] \definetransparency [darken] [9] \definetransparency [lighten] [10] \definetransparency [difference] [11] \definetransparency [exclusion] [12]
Defining derivative colors
Colors defined in terms of other colors are processed at the Lua end, unless they are direct clones. In that case, the new name is never told to Lua. That means that this does not work:
% direct clone, processed by TeX \definecolor[ColorA][red] % fails, ColorA not known to Lua \definecolor[ColorB][.5(ColorA)]
Writing it as a fake fraction works.
% definition involves a fraction, processed by Lua. \definecolor[ColorA][1.0(red)] % succeeds \definecolor[ColorB][.5(ColorA)]
Example
% mode=mkiv % rgb \definecolor[bluu][r=.25, g = .1, b=1] Hey, \color[bluu]{look at that!} % hex %\setupcolor[hex] % needed in mkii only \definecolor[salmon][h=AB5757] Hey, \color[salmon]{look at that!}
See also
Help from ConTeXt-Mailinglist/Forum
All issues with: