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guitarchordschemes.sty
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guitarchordschemes.sty
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% --------------------------------------------------------------------------
% the GUITARCHORDSCHEMES package
%
% Guitar Chord and Scale Tablatures with TikZ
%
% --------------------------------------------------------------------------
% Clemens Niederberger
% Web: https://bitbucket.org/cgnieder/guitarchordschemes/
% E-Mail: contact@mychemistry.eu
% --------------------------------------------------------------------------
% Copyright 2013-2016 Clemens Niederberger
%
% 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
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Clemens Niederberger.
% --------------------------------------------------------------------------
% The guitarchordschemes package consists of the files
% - guitarchordschemes.sty,
% - guitarchordschemes_en.tex,
% - guitarchordschemes_en.pdf,
% - README
% --------------------------------------------------------------------------
% If you have any ideas, questions, suggestions or bugs to report, please
% feel free to contact me.
% --------------------------------------------------------------------------
%
% package info and requirements:
\NeedsTeXFormat{LaTeX2e}
\def\gcs@date{2016/08/16}
\def\gcs@version{v0.7}
\def\gcs@description{Guitar Chord and Scale Tablatures with TikZ (CN)}
\ProvidesPackage{guitarchordschemes}[\gcs@date\space \gcs@version\space \gcs@description]
\RequirePackage{tikz,cnltx-base}
\usetikzlibrary{shapes.misc,arrows,calc}
% --------------------------------------------------------------------------
% message handling
\newcommand*\gcs@error@message{%
For details have a look at the `guitarchordschemes' manual.%
}
\cnltx@create@generic@message{gcs}{guitarchordschemes}{Error}{\gcs@error@message}
\cnltx@create@generic@message{gcs}{guitarchordschemes}{Warning}{}
\cnltx@create@generic@message{gcs}{guitarchordschemes}{WarningNoLine}{}
\cnltx@create@generic@message{gcs}{guitarchordschemes}{Info}{}
\newcommand*\gcs@missing@date@error[2]{%
\gcs@error
{#1: empty #2}
{#1: It seems you didn't specify the #2}%
}
\newrobustcmd*\gcs@def[1]{%
\ifdef{#1}
{%
\gcs@error
{The macro \string#1\space is already defined}
{%
The macro \string#1\space is already defined. Please let the package
author know%
}%
}
{\protected\def#1}%
}
\newrobustcmd*\gcs@deprecated@option[2]{%
\gcs@warning{Since version #1 the option `#2' has been dropped}%
}
% --------------------------------------------------------------------------
% package options and setup:
\newcommand*\gcs@finger@font{\sffamily\small}
\newcommand*\gcs@position@font{\sffamily}
\newcommand*\gcs@name@font{\large}
\newcommand*\gcs@string@name@format{\sffamily\small}
\newcommand*\gcs@name@distance{.5em}
\newcommand*\gcs@x@unit{.8cm}
\newcommand*\gcs@y@unit{.8cm}
\newcommand*\gcs@line@width{1pt}
\newcommand*\gcs@finger@radius{.1875}
\newcommand*\gcs@finger@x@offset{.375}
\newcommand*\gcs@finger@y@offset{.275}
\newcommand*\gcs@angle{0}
\newcommand*\gcs@string@number{6}
\newcommand*\gcs@setstringnumber[1]{%
\ifnumless{#1}{1}
{%
\gcs@warning{You can't use less than one string. Setting string number
to 1}%
\def\gcs@string@number{1}%
}
{%
\ifnumgreater{#1}{7}
{%
\gcs@warning{You can't use more than seven
strings. Setting string number to 6}%
\def\gcs@string@number{6}%
}
{\def\gcs@string@number{#1}}%
}%
}
\newbool{gcs@switch@name}
\newcommand*\gcs@chordscheme@fret@number{4}
\newcommand*\gcs@scales@fret@number{6}
\newrobustcmd*\gcs@chord@tuning[1]{%
\foreach \string@name [count=\x] in {#1}
{\csxdef{guitar@string@\x}{\expandonce\string@name}}%
}
\newbool{gcs@restrict@boundingbox}
\newcommand*\gcs@restrictboundingbox[1]{
\ifbool{gcs@restrict@boundingbox}
{
\ifnumequal{\gcs@string@number}{1}
{\useasboundingbox (0,-.4) --++ (1.5*\csname gcs@#1@fret@number\endcsname,.8) ; }
{
\useasboundingbox
(bass)
rectangle
(1.5*\csname gcs@#1@fret@number\endcsname,{.8*(\gcs@string@number-1)}) ;
}
}{}
}
\pgfkeys{
guitarchordschemes/.cd ,
x-unit/.code = \def\gcs@x@unit{#1} ,
y-unit/.code = \def\gcs@y@unit{#1} ,
rotate/.code = \def\gcs@angle{#1} ,
strings/.code = \gcs@setstringnumber{#1} ,
finger-format/.code = \def\gcs@finger@font{#1} ,
finger-format+/.code =
\expandafter\def\expandafter\gcs@finger@font
\expandafter{\gcs@finger@font#1} ,
position-format/.code = \def\gcs@position@font{#1} ,
position-format+/.code =
\expandafter\def\expandafter\gcs@position@font
\expandafter{\gcs@position@font#1} ,
name-format/.code = \def\gcs@name@font{#1} ,
name-format+/.code =
\expandafter\def\expandafter\gcs@name@font
\expandafter{\gcs@name@font#1} ,
name-distance/.code = \def\gcs@name@distance{#1} ,
name-below/.is if = gcs@switch@name ,
chord-name-cs/.code = {\let\gcs@chord@name@command=#1} ,
scales-name-cs/.code = {\let\gcs@scales@name@command=#1} ,
string-name-format/.code = \def\gcs@string@name@format{#1} ,
string-name-format+/.code =
\expandafter\def\expandafter\gcs@string@name@format
\expandafter{\gcs@string@name@format#1} ,
chord-frets/.code =
\ifnumless{#1}{4}
{%
\gcs@warning{You cannot use less than 4 frets for a chord!}%
\def\gcs@chordscheme@fret@number{4}%
}
{\def\gcs@chordscheme@fret@number{#1}} ,
scales-frets/.code =
\ifnumless{#1}{5}
{%
\gcs@warning{You cannot use less than 5 frets for a scale!}%
\def\gcs@scales@fret@number{5}%
}
{\def\gcs@scales@fret@number{#1}} ,
line-width/.code = \def\gcs@line@width{#1} ,
finger-radius/.code = \def\gcs@finger@radius{#1} ,
finger-x-offset/.code = \def\gcs@finger@x@offset{#1} ,
finger-y-offset/.code = \def\gcs@finger@y@offset{#1} ,
finger-style/.code = \tikzset{finger style/.style={#1}} ,
root-style/.code = \tikzset{root style/.style={#1}} ,
show-root-style/.code = \tikzset{show root style/.style={#1}} , ,
ringing-style/.code = \tikzset{ringing style/.style={#1}} ,
muted-style/.code = \tikzset{muted style/.style={#1}} ,
tuning/.code = \gcs@chord@tuning{#1} ,
use-rbc/.code = \gcs@deprecated@option{0.5}{use-rbc} ,
restrict-bounding-box/.is if = gcs@restrict@boundingbox
}
% the setup command:
\newrobustcmd*\setchordscheme[1]{\pgfqkeys{/guitarchordschemes}{#1}}
% some defaults -- need to be set before options are processed:
\setchordscheme{
tuning = {E,B,G,D,A,E} ,
muted-style = {cross out,draw} ,
root-style = {fill} ,
show-root-style = {draw} ,
ringing-style = {draw} ,
finger-style = {fill}
}
\ProcessPgfOptions*
% --------------------------------------------------------------------------
% settings for the whole scheme:
\tikzset{
gcs/finger/.style =
{
xshift = \gcs@finger@x@offset*\gcs@x@unit ,
yshift = \gcs@finger@y@offset*\gcs@y@unit ,
font = \gcs@finger@font
}
}
% setting a chord scheme:
\pgfkeys{
gcs/chord/.cd ,
name/.code = \gdef\gcs@chord@name{#1} ,
position/.code = \def\gcs@chord@position{#1} ,
finger/.code = \gcs@chord@finger{#1} ,
root/.code = \gcs@chord@root{#1} ,
show-root/.code = \gcs@chord@show@root{#1} ,
mute/.code = \gcs@chord@mute{#1} ,
ring/.code = \gcs@chord@ring{#1} ,
barre/.code = \gcs@chord@barre{#1} ,
fret-number/.code =
\ifnumless{#1}{4}
{%
\gcs@warning{You cannot use less than 4 frets for a chord!}%
\def\gcs@chordscheme@fret@number{4}%
}
{\def\gcs@chordscheme@fret@number{#1}}
}
\newrobustcmd*\setfingering[3]{%
\pgfkeys{
gcs/scales/.cd ,
fingering/#1/.code =
\gcs@scales@finger{#2}
\ifblank{#3}{}{\gcs@scales@root{#3}} ,
fingering*/#1/.code =
\def\gcs@tmp{}%
\foreach \gcs@str in {#2,#3}
{ \xappto\gcs@tmp{\gcs@str,} }%
\edef\gcs@tmp{\expandafter\cs@remove@comma\gcs@tmp\q@stop}%
\expandafter\gcs@scales@finger\expandafter{\gcs@tmp} ,
fingering?/#1/.code =
\def\gcs@tmp{}%
\foreach \gcs@str in {#2,#3}
{ \xappto\gcs@tmp{\expandafter\cs@remove@finger\gcs@str::\q@stop,} }%
\edef\gcs@tmp{\expandafter\cs@remove@comma\gcs@tmp\q@stop}%
\expandafter\gcs@scales@finger\expandafter{\gcs@tmp}%
}%
}
\def\cs@remove@finger#1:#2:#3\q@stop{#1}
\def\cs@remove@comma#1,\q@stop{#1}
% setting a scale:
\pgfkeys{
gcs/scales/.cd ,
name/.code = \gdef\gcs@scales@name{#1} ,
position/.code = \def\gcs@scales@position{#1} ,
finger/.code = \gcs@scales@finger{#1} ,
root/.code = \gcs@scales@root{#1} ,
fret-number/.code =
\ifnumless{#1}{5}
{%
\gcs@warning{You cannot use less than 5 frets for a scale!}%
\def\gcs@scales@fret@number{5}%
}
{\def\gcs@scales@fret@number{#1}} ,
fingering/.is choice ,
fingering*/.is choice ,
fingering?/.is choice
}
\setfingering{type 1}{
1/1:1s, 3/1:2, 5/1:4,
3/2:2, 5/2:4,
2/3:1, 4/3:3,
2/4:1, 3/4:2, 5/4:4,
2/5:1, 5/5:4,
1/6:1s, 3/6:2, 5/6:4
}{5/3:4, 3/5:2}
\setfingering{type 1A}{
3/1:2, 5/1:4,
3/2:2, 5/2:4,
2/3:1, 3/3:2, 5/3:4,
2/4:1, 5/4:4,
1/5:1s, 3/5:2, 5/5:4,
3/6:2, 5/6:4
}{1/1:1s, 3/4:2, 1/6:1s}
\setfingering{type 2}{
2/1:1, 5/1:4,
3/2:2, 5/2:4,
2/3:1, 4/3:3, 5/3:4,
2/4:1, 4/4:3,
2/5:1, 3/5:2, 5/5:4,
2/6:1, 5/6:4
}{3/1:2, 5/4:4, 3/6:2}
\setfingering{type 3}{
2/1:1, 3/1:2, 5/1:4,
2/2:1, 5/2:4,
2/3:1, 4/3:3,
2/4:1, 4/4:3, 5/4:4,
2/5:1, 4/5:3,
2/6:1, 3/6:2, 5/6:4
}{3/2:2, 5/5:4}
\setfingering{type 4}{
2/1:1, 4/1:3,
2/2:1, 3/2:2, 5/2:4,
4/3:3,
2/4:1, 4/4:3, 6/4:4s,
2/5:1, 4/5:3, 5/5:4,
2/6:1, 4/6:3
}{5/1:4, 2/3:1, 5/6:4}
% --------------------------------------------------------------------------
% the internal commands
% placing fingers:
% <fret>/<string>:<finger>
\newrobustcmd*\gcs@chord@finger[1]{%
\foreach \gcs@finger@spec in {#1}
{
\expandafter\gcs@get@finger@data\gcs@finger@spec::\q@stop
\ifdefvoid\gcs@finger@x
{\gcs@missing@date@error{finger}{position}}
{
\pgfmathsetmacro\gcs@finger@fret{1.5*\gcs@finger@x-0.75}
\ifdefvoid\gcs@finger@y
{\gcs@missing@date@error{finger}{string}}
{
\pgfmathsetmacro\gcs@finger@string{(\gcs@string@number-\gcs@finger@y)*4/5}
\draw[finger style]
(\gcs@finger@fret,\gcs@finger@string)
circle
(\gcs@finger@radius*\gcs@x@unit) ;
\node[gcs/finger]
at (\gcs@finger@fret,\gcs@finger@string)
{\gcs@finger@number} ;
}
}
}
}
\let\gcs@scales@finger\gcs@chord@finger
\gcs@def\gcs@get@finger@data#1/#2:#3:#4\q@stop{%
\def\gcs@finger@x{#1}%
\def\gcs@finger@y{#2}%
\def\gcs@finger@number{#3}%
}
% placing a barre:
% <fret>/<string>-<string>:<finger>
\newrobustcmd*\gcs@chord@barre[1]{%
\foreach \gcs@barre@spec in {#1}
{
\expandafter\gcs@get@barre@data\gcs@barre@spec::\q@stop
\ifdefvoid\gcs@barre@x
{\gcs@missing@date@error{barre}{position}}
{\pgfmathsetmacro\gcs@barre@fret{1.5*\gcs@barre@x-0.75}}
\ifdefvoid\gcs@barre@fromto
{\gcs@missing@date@error{barre}{string range}}
{
\expandafter\gcs@barre@getstrings\gcs@barre@fromto--\q@stop
\pgfmathsetmacro\gcs@barre@lower@string{(\gcs@string@number-\gcs@barre@lower@y)*4/5}
\pgfmathsetmacro\gcs@barre@upper@string{(\gcs@string@number-\gcs@barre@upper@y)*4/5}
\draw[finger style,round cap-round cap,line width=2*\gcs@finger@radius*\gcs@x@unit]
(\gcs@barre@fret,\gcs@barre@lower@string) node[gcs/finger] {\gcs@barre@finger}
++ (0,\gcs@finger@radius*\gcs@x@unit)
--
($(\gcs@barre@fret,\gcs@barre@upper@string)+(0,-\gcs@finger@radius*\gcs@x@unit)$)
;
}
}
}
\gcs@def\gcs@get@barre@data#1/#2:#3:#4\q@stop{%
\def\gcs@barre@x{#1}%
\def\gcs@barre@fromto{#2}%
\def\gcs@barre@finger{#3}%
}
\gcs@def\gcs@barre@getstrings#1-#2-#3\q@stop{%
\ifx#3-\relax
\def\gcs@barre@lower@y{#1}%
\def\gcs@barre@upper@y{#2}%
\else
\gcs@error
{barre: wrong string range syntax}
{barre: wrong string range syntax}%
\fi
}
% placing root fingers:
% <fret>/<string>:<finger>
\newrobustcmd*\gcs@chord@root[1]{%
\foreach \gcs@finger@spec in {#1}
{
\expandafter\gcs@get@finger@data\gcs@finger@spec::\q@stop
\ifdefvoid\gcs@finger@x
{\gcs@missing@date@error{root}{position}}
{
\pgfmathsetmacro\gcs@finger@fret{1.5*\gcs@finger@x-0.75}
\ifdefvoid\gcs@finger@y
{\gcs@missing@date@error{root}{string}}
{
\pgfmathsetmacro\gcs@finger@string{(\gcs@string@number-\gcs@finger@y)*4/5}
\node[minimum size=2*\gcs@finger@radius*\gcs@x@unit,inner sep=0pt,root style]
at (\gcs@finger@fret,\gcs@finger@string) {} ;
\node[gcs/finger]
at (\gcs@finger@fret,\gcs@finger@string)
{\gcs@finger@number} ;
}
}
}
}
\let\gcs@scales@root\gcs@chord@root
% placing ghost roots:
% <fret>/<string>
\newrobustcmd*\gcs@chord@show@root[1]{%
\foreach \gcs@finger@spec in {#1}
{
\expandafter\gcs@get@finger@data\gcs@finger@spec::\q@stop
\ifdefvoid\gcs@finger@x
{\gcs@missing@date@error{show-root}{position}}
{
\pgfmathsetmacro\gcs@finger@fret{1.5*\gcs@finger@x-0.75}
\ifdefvoid\gcs@finger@x
{\gcs@missing@date@error{show-root}{string}}
{
\pgfmathsetmacro\gcs@finger@string{(\gcs@string@number-\gcs@finger@y)*4/5}
\node[
minimum size=2*\gcs@finger@radius*\gcs@x@unit,
inner sep=0pt,
show root style]
at (\gcs@finger@fret,\gcs@finger@string) {} ;
}
}
}
}
% muted strings:
\newrobustcmd*\gcs@chord@mute[1]{%
\foreach \muted@string in {#1}
{
\pgfmathsetmacro\muted@string@pos{(6-\muted@string)*4/5}
\node[muted style] at (0,\muted@string@pos) {} ;
}
}
% ringing strings:
\newrobustcmd*\gcs@chord@ring[1]{%
\foreach \ringing@string in {#1}
{
\pgfmathsetmacro\ringing@string@pos{(\gcs@string@number-\ringing@string)*4/5}
\draw[ringing style]
(0,\ringing@string@pos) circle (\gcs@finger@radius*\gcs@x@unit) ;
}
}
% the chord name:
\newrobustcmd*\gcs@place@chord@name[1]{%
\node[
label={[text height=1.5ex,text depth=.2ex,font=\gcs@name@font,
label distance=\gcs@name@distance]\ifbool{gcs@switch@name}{below}{above}:{%
\foreach \gcs@chord@name@variant in {#1}
{%
% \space
\expandafter\gcs@chord@name@command
\expandafter{\gcs@chord@name@variant}%
% \space
}%
}}] at
(diagram.\ifbool{gcs@switch@name}{south}{north}) {} ;
}
\newrobustcmd*\gcs@chord@name@command[1]{#1}
% the scale name:
\newrobustcmd*\gcs@place@scales@name[1]{%
\node[
label={[text height=1.5ex,text depth=.2ex,font=\gcs@name@font,
label distance=\gcs@name@distance]\ifbool{gcs@switch@name}{below}{above}:{%
\foreach \gcs@scales@name@variant in {#1}
{%
% \space
\expandafter\gcs@scales@name@command
\expandafter{\gcs@scales@name@variant}%
% \space
}%
}}] at
(diagram.\ifbool{gcs@switch@name}{south}{north}) {} ;
}
\newrobustcmd*\gcs@scales@name@command[1]{#1}
% --------------------------------------------------------------------------
% the chord scheme command:
\newrobustcmd*\gcs@chordscheme[1]{%
\begingroup
\begin{tikzpicture}[
x=\gcs@x@unit,
y=\gcs@y@unit,
line width=\gcs@line@width,
baseline=(bass)
]
\begin{scope}[rotate=\gcs@angle,local bounding box=diagram]
\coordinate (bass) at (0,0) ;
\gcs@restrictboundingbox{chordscheme}
\pgfqkeys{/gcs/chord}{#1}%
\foreach \fretnumber
in {0,...,\gcs@chordscheme@fret@number}
{
\ifnumequal{\gcs@string@number}{1}
{ \draw (1.5*\fretnumber,-.4) --++ (0,.8) ; }
{ \draw (1.5*\fretnumber,0) -- ++(0,{.8*(\gcs@string@number-1)}) ; }
}
\foreach \gcs@string in {1,...,\gcs@string@number}
{
\draw
(0,{.8*(\gcs@string@number-\gcs@string)})
node[transform shape,
label={[text height=1.5ex,text depth=.2ex]left:%
\gcs@string@name@format\csuse{guitar@string@\gcs@string}}] {}
--++(1.5*\gcs@chordscheme@fret@number,0) ;
}
\ifdefvoid\gcs@chord@position
{}
{
\draw
(.75,{.8*(\gcs@string@number-1)})
node[transform shape,
label={[text height=1.5ex,text depth=.2ex,font=\gcs@position@font]%
above:\gcs@chord@position}] {} ;
}
\end{scope}
\ifdefvoid\gcs@chord@name
{}
{\expandafter\gcs@place@chord@name\expandafter{\gcs@chord@name}}
\gdef\gcs@chord@name{}
\end{tikzpicture}
\endgroup
}
% --------------------------------------------------------------------------
% the scales command:
\newrobustcmd*\gcs@scales[1]{%
\begingroup
\begin{tikzpicture}[
x=\gcs@x@unit,
y=\gcs@y@unit,
line width=\gcs@line@width,
baseline=(bass)
]
\begin{scope}[rotate=\gcs@angle,local bounding box=diagram]
\coordinate (bass) at (0,0) ;
\gcs@restrictboundingbox{scales}
\pgfqkeys{/gcs/scales}{#1}%
\foreach \fret in { 0,1,...,\gcs@scales@fret@number }
{ \draw (1.5*\fret,0) -- (1.5*\fret,{.8*(\gcs@string@number-1)}) ; }
\foreach \gcs@string in {1,...,\gcs@string@number}
{
\draw
(0,{.8*(\gcs@string@number-\gcs@string)})
node[transform shape,
label={[text height=1.5ex,text depth=.2ex]%
left:\gcs@string@name@format\csuse{guitar@string@\gcs@string}}] {}
--++(1.5*\gcs@scales@fret@number,0) ;
}
\ifdefvoid\gcs@scales@position
{}
{
\draw
(.75,{.8*(\gcs@string@number-1)})
node[transform shape,
label={[text height=1.5ex,text depth=.2ex,font=\gcs@position@font]%
above:\gcs@scales@position}] {} ;
}
\end{scope}
\ifdefvoid\gcs@scales@name
{}
{\expandafter\gcs@place@scales@name\expandafter{\gcs@scales@name}}
\gdef\gcs@scales@name{}
\end{tikzpicture}
\endgroup
}
% --------------------------------------------------------------------------
% the user commands:
\newrobustcmd*\chordscheme[1][]{\gcs@chordscheme{#1}}
\newrobustcmd*\scales[1][]{\gcs@scales{#1}}
% --------------------------------------------------------------------------
% the symbols for use outside of a scheme:
\newrobustcmd*\gcs@fingersymbol{%
\tikz\draw[finger style] (0,0) circle (\gcs@finger@radius*\gcs@x@unit);}
\newrobustcmd*\rootsymbol{%
\tikz\node[root style,minimum size=2*\gcs@finger@radius*\gcs@x@unit] at (0,0) {} ;}
\newrobustcmd*\showrootsymbol{%
\tikz\node[
show root style,
minimum size=2*\gcs@finger@radius*\gcs@x@unit,
line width=\gcs@line@width] at (0,0) {} ;}
\newrobustcmd*\ringingstring{%
\tikz\draw[
ringing style,
line width=\gcs@line@width] (0,0) circle (\gcs@finger@radius*\gcs@x@unit);}
\newrobustcmd*\mutedstring{%
\tikz\node[
muted style,
line width=\gcs@line@width] at (0,0) {};}
\endinput
% --------------------------------------------------------------------------
% HISTORY
2013/04/28 v0.1 - first version
2013/04/29 v0.1a - added error handling and messages
2013/04/30 v0.2 - it's stupid to set colors explicitly -- better define TikZ
styles for this
2013/05/01 v0.3 - added \scales command
2013/05/01 v0.3a - set all lengths as multiples of the base unit
2013/08/25 v0.4 - added scale option that allows variable number of frets
2014/07/16 v0.5 - add `inner sep=0pt' to `root' and `show root' styles
2014/09/15 v0.6 - new options `chord-frets', `scales-frets' and `fret-number'
2016/08/16 v0.7 - new option `strings=<num>' makes the string number
adaptable which allows creation of ukulele and bass guitar
diagrams
- new option `name-below'
- new option `rotate=<angle>'
- new option `name-distance'
- new command \newfingering{name}{fingers}{roots}