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author | Karl Berry <karl@freefriends.org> | 2011-07-27 23:15:42 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2011-07-27 23:15:42 +0000 |
commit | 62263d6664dd3ca8d42bcfc6445e2c189154745b (patch) | |
tree | 5d8c5f33a619380e316ca222a26e1807be042e57 /Master/texmf-dist/doc/metapost/mpcolornames/mpcolornames.tex | |
parent | a5f505fa400aa240740da0daee3c527b2e63934c (diff) |
new metapost package mpcolornames (27jul11)
git-svn-id: svn://tug.org/texlive/trunk@23252 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/doc/metapost/mpcolornames/mpcolornames.tex')
-rw-r--r-- | Master/texmf-dist/doc/metapost/mpcolornames/mpcolornames.tex | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/Master/texmf-dist/doc/metapost/mpcolornames/mpcolornames.tex b/Master/texmf-dist/doc/metapost/mpcolornames/mpcolornames.tex new file mode 100644 index 00000000000..68fe0fe8f26 --- /dev/null +++ b/Master/texmf-dist/doc/metapost/mpcolornames/mpcolornames.tex @@ -0,0 +1,359 @@ +%%% file mpcolornames.tex +%%% Copyright 2009, 2011 Stephan Hennig +% +% This work may be distributed and/or modified under the conditions of +% the LaTeX Project Public License, either version 1.3 of this license +% or (at your option) any later version. The latest version of this +% license is in http://www.latex-project.org/lppl.txt +% +\RequirePackage{cmap} +\documentclass[DIV=9, captions=tableheading]{scrartcl} +\usepackage[T1]{fontenc} +\usepackage[charter]{mathdesign} +\usepackage{berasans} +\usepackage{textcomp} +\renewcommand*{\ttdefault}{fvs} +\setkomafont{disposition}{\normalfont\bfseries} +\usepackage{caption} +\captionsetup[table]{position=top} +\usepackage{amsmath} +% \usepackage{amssymb} +\usepackage[x11names]{xcolor} +\colorlet{framecol}{black!50} +\usepackage{listings} +\lstloadlanguages{MetaPost, [LaTeX]TeX} +\lstdefinelanguage[ext]{MetaPost}[]{MetaPost}{ + morekeywords={verbatimtex}, + morekeywords=[2]{blackpart, cmykcolor, colormodel, colorpart, + cyanpart, greypart, magentapart, rgbcolor, yellowpart}, + morekeywords=[3]{withcmykcolor, withgreyscale, withoutcolor, + withpostscript, withprescript, withrgbcolor}, + morekeywords=[5]{defaultcolormodel, mpprocset, outputformat, + outputtemplate}, + morekeywords=[6]{mpversion}, +% morecomment=[s][basicstyle]{\%}{&}, + deletekeywords=[4]{z} +} +\colorlet{mpcolor}{RoyalBlue4} +\colorlet{latexcolor}{IndianRed4} +\colorlet{textcolor}{black} +\lstset{ + columns=fullflexible, breaklines=true, breakatwhitespace=true, + escapechar=|, + aboveskip=10pt, belowskip=10pt, + frame=tb, framerule=2pt, framesep=6pt, + framexleftmargin=10pt, framexrightmargin=10pt, + xleftmargin=20pt, xrightmargin=20pt, +} +\lstdefinestyle{MP}{ + language=[ext]MetaPost, + basicstyle=\normalfont\ttfamily,%\color{mpcolor}, + keywordstyle=\bfseries, + commentstyle=\itshape, + rulecolor=\color{mpcolor!40}, +} +\lstdefinestyle{LaTeX}{ + language=[LaTeX]TeX, + basicstyle=\normalfont\sffamily,%\color{latexcolor}, + keywordstyle={}, commentstyle=\itshape, + rulecolor=\color{latexcolor!40}, +} +\lstdefinestyle{text}{ + basicstyle=\normalfont\sffamily,%\color{textcolor}, + keywordstyle={}, commentstyle={}, + rulecolor=\color{textcolor!40}, +} +\lstdefinestyle{textnof}{ + style=text, + frame=none +} +\lstMakeShortInline[style=MP, +basicstyle=\normalfont\ttfamily\color{mpcolor}, keywordstyle={}, +commentstyle={}]| + +\usepackage{array} +\usepackage{booktabs} +\usepackage{longtable} +\usepackage{multicol} +\usepackage{graphicx} +\setcounter{topnumber}{2} +\setcounter{bottomnumber}{0} +\usepackage[USenglish]{babel} +\usepackage{hyperref} +\hypersetup{ + pdfstartview={XYZ null null null},% Zoom factor is determined by viewer. + pdfpagemode=UseNone, + colorlinks=true, + linkcolor=DarkOrange2, + urlcolor=Chocolate4, + citecolor=DeepPink2 +} + +\newcommand*{\cmd}[1]{\texttt{#1}} +\newcommand*{\name}[1]{\textsf{\mdseries\emph{#1}}} +\newcommand*{\pkg}{\name{mpcolornames}} +\newcommand{\user}[1]{\emph{#1}} +\newcommand*{\macro}[1]{% + \marginpar{% + \hspace*{-\marginparsep}% + \hspace*{-\textwidth}% + \hspace*{-\marginparsep}% + \hspace*{-\marginparwidth}% + \makebox[\marginparwidth][r]{% + \color{mpcolor}% + \texttt{#1}% + }% + }% +} + +\urlstyle{same}% See url.sty. +\newcommand*{\colorproof}[2][]{% + \includegraphics{proof-spec-#1-#2.mps}% + \hspace{5pt}% + \nolinkurl{#2}% +} + +\typearea{last} + +\begin{document} +\title{The \pkg\ package\thanks{This document describes \pkg\ v0.20, + last revised 2011/07/14.}} +\author{Stephan Hennig\thanks{stephanhennig@arcor.de}} +\maketitle + +\begin{abstract} + The MetaPost format \cmd{plain.mp} provides only five built-in color + names (variables), all defined in the RGB model: |red|, |green| and + |blue| for the primary colors and |black| and |white| + (\autoref{tab:spec-plain-mp}). The \pkg\ package makes more than 500 + color names from different color sets in different color models + available to MetaPost. Color sets include X11, SVG, DVIPS and + \name{xcolor} specifications. +\end{abstract} + +\setcounter{secnumdepth}{3} +\setcounter{tocdepth}{3} +\begin{multicols}{2} +\tableofcontents +\end{multicols} + + +\section{Color model constants} +\label{sec:color-model-constants} +Before discussing color names, lets have a look at some other constants +that are provided by the \pkg\ package. MetaPost supports the CMYK and +grey scale color models since version~1.000. At that time a new +internal variable |defaultcolormodel| was introduced, whose value +determines the color model of the black color used for drawing and +filling in absence of a |withcolor| statement---either explicit or via +|drawoptions|---and if the output format supports more than one color +model (cf. section~9 of the MetaPost manual). Note, |defaultcolormodel| +never triggers a color model conversion. + +Do you remember what value of variable |defaultcolormodel| corresponds +to the CMYK color model? And do you remember what color model +corresponds to a value of~3? Memoizing these numbers, which you need to +know only once in a while, isn't easy and in code they are less +descriptive than names. For that reason, the \pkg\ package declares a +few internal variables with the values shown in +\autoref{tab:color-model-constants} that should help switching between +color models. + +\begin{table} + \centering + \caption{Color model constants.} + \label{tab:color-model-constants} + \begin{tabular}{lc} + internal variable & value\\ + \addlinespace\toprule\addlinespace + |nomodel| & 1\\ + |greyscalemodel| & 3\\ + |rgbmodel| & 5\\ + |cmykmodel| & 7\\ + \end{tabular} +\end{table} + + +\section{Color sets} +\label{sec:colorsets} +This package provides color names from four color sets in three +different color models. Color definitions are taken from X11 +(\autoref{tab:spec-x11nam-def}), SVG (\autoref{tab:spec-svgnam-def}) and +DVIPS (\autoref{tab:spec-dvipsnam-def}) specifications as distributed by +packages \name{color} and \name{xcolor}. Additionally, there is a small +set of colors that are defined by package \name{xcolor} +(\autoref{tab:spec-xcolor-sty}). All color specifications have +automatically been translated into MetaPost code by scripts. + +Colors defined in the X11 and SVG specifications are in the RGB color +space, i.e., the corresponding variables are of type |rgbcolor|. Colors +defined in the DVIPS specification are in the CMYK color space, i.e., +the corresponding variables are of type |cmykcolor|. The set of colors +from the \name{xcolor} package are in the CMYK, RGB and grey scale color +model. The corresponding variable identifiers have been augmented by a +prefix |cmyk_|, |rgb_| and |grey_| that indicates the color model used. +Variables are of type |cmykcolor|, |rgbcolor| and |numeric|, resp. + +The package can be loaded by writing + +\begin{lstlisting}[style=MP] +input mpcolornames +\end{lstlisting} +% +in the MetaPost source file. After that, all color names defined in the +above mentioned color specifications are available as (array) variables. +This is possible, because the sets of color names defined in the color +specifications are nearly disjoint. Only a few color names are defined +in more than one color specification. + +Array variables can be indexed the usual way. As long as the index is a +constant number, brackets can be omitted. That way, color names, like +e.g., |VioletRed1| from X11 specification, can easily be used in +MetaPost. If the index is a not a constant, brackets are mandatory. As +an example, the color definitions of colors |VioletRed1| to |VioletRed4| +can be output like this + +\lstinputlisting[style=MP, firstline=9]{expl-array-index.mp} +% +and the result would look like + +\lstinputlisting[style=text, firstline=9]{expl-array-index.log} + + +\section{SVG and DVIPS color name clash} +\label{sec:nameclash} +There is a name clash between forty of the color names defined by the +SVG and DVIPS specifications. The problem is that both specifications +define colors in different color models, RGB for the SVG specification +and CMYK for the DVIPS specification. Additionally, the visual +impression of most colors with the same name varies quite drastically, +e.g., for the name |Lavender| (see \autoref{fig:clash-svg-dvips}). The +set of clashing color names is listed in \autoref{tab:clash-svg-dvips}. +Here is how name clashes are handled by the \pkg\ package: When loading +the \pkg\ package, definitions of the SVG specification are processed +after those of the DVIPS specification and hence, for the clashing +names, definitions of the SVG specification ``win.'' Note, the variable +type of all clashing color names is therefore |rgbcolor|. + +To control the active set of clashing color definitions two user macro +are provided: |svgnames|\macro{svgnames} and +|dvipsnames|\macro{dvipsnames}. Calling any of both macros re-applies +all SVG or DVIPS color name declarations, overwriting all current +definitions of the respective set. As an example, DVIPS definitions for +all clashing color names can be activated in the preamble by loading the +\pkg\ package as follows: + +\begin{lstlisting}[style=MP] +input mpcolornames +dvipsnames; +\end{lstlisting} + +One can switch back and forth between SVG and DVIPS definitions by +repeatedly calling macros |dvipsnames| and |svgnames| within one figure. +A better alternative, however, is to call these macros within a group, +since both macros save the set of clashing identifiers w.\,r.\,t. the +current group before setting the new definitions into effect. As an +example, \autoref{fig:clash-svg-dvips} has been drawn with the following +code: + +\lstinputlisting[style=MP, firstline=10]{fig-clash-svg-dvips.mp} + +\begin{figure} + \centering + \includegraphics{fig-clash-svg-dvips-1.mps} + \caption{Color \texttt{\color{mpcolor}Lavender} with DVIPS and SVG + definitions within one figure.} + \label{fig:clash-svg-dvips} +\end{figure} + + +\section{Related packages} +\label{sec:relatedpkg} +Package \name{mfpic} distributes a file \cmd{dvipsnam.mp} that contains +the same color definitions from the DVIPS specification that this +package provides. For backwards compatibility, package \name{mfpic} +converts all colors into the RGB color model for MetaPost version that +don't support the CMYK color model. Be careful when using both packages +in parallel! + +\begin{flushleft} + \itshape% + Happy \TeX ing!\par + Stephan Hennig +\end{flushleft} + + +\appendix +\section{Proof tables} +\label{sec:prooftables} +The following proof tables are sorted by color model. + + +\clearpage +% Enlarge width of typearea. +\areaset{1.2\textwidth}{\textheight} +\setlength{\columnsep}{3pt} + +\subsection{Color names for multiple color models} +\label{sec:multinames} + +%%% names from xcolor.sty +\newlength{\tabcolwidth} +\begingroup +\renewcommand*{\colorproof}[2][]{% + \includegraphics{proof-spec-#1-rgb_#2.mps}% + \hspace{5pt}% + \nolinkurl{rgb_#2}% + & \includegraphics{proof-spec-#1-cmyk_#2.mps}% + \hspace{5pt}% + \nolinkurl{cmyk_#2}% + & \includegraphics{proof-spec-#1-grey_#2.mps}% + \hspace{5pt}% + \nolinkurl{grey_#2}% +} +\input{tab-spec-xcolor-sty} +\endgroup + +\clearpage +\subsection{RGB color names} +\label{sec:rgbnames} + +%%% names from plain.mp +\input{tab-spec-plain-mp} + +%%% names from x11nam.def +\input{tab-spec-x11nam-def} + +%%% names from svgnam.def +\input{tab-spec-svgnam-def} + +\clearpage +\subsection{CMYK color names} +\label{sec:cmyknames} + +%%% names from dvipsnam.def +\input{tab-spec-dvipsnam-def} + + +\clearpage +\section{Color name clashes} +\label{sec:nameclashes} + +% svgnam.def and dvipsnam.def name clash +\begingroup +\renewcommand*{\colorproof}[2][]{% + \includegraphics{proof-spec-svgnam-def-#2.mps}% + \includegraphics{proof-spec-dvipsnam-def-#2.mps}% + \hspace{5pt}% + \nolinkurl{#2}% +} +\input{tab-clash-svg-dvips} +\endgroup + +\end{document} + +%%% Local Variables: +%%% mode: latex +%%% TeX-PDF-mode: t +%%% TeX-master: t +%%% End: |