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%D \module
%D [ file=t-gantt,
%D version=2011.09.11,
%D title=\CONTEXT\ User Module,
%D subtitle=Drawing Gantt charts,
%D author={Adam Reviczky and Aditya Mahajan},
%D date=\currentdate,
%D copyright={Adam Reviczky and Aditya Mahajan},
%D license=Public Domain]
%D Some macros for drawing Gantt charts using MetaPost.
\writestatus{loading}{ConTeXt User Module / metapost gantt chart}
\startmodule[gantt-s-mp]
\unprotect
\def\????gantt{@@@@gantt}
\definesystemvariable{gantt}
\startMPinclusions
% temporary solution for a pattern substitute
input hatching;
\stopMPinclusions
\newcount\ganttnum
\newcount\gantttitlenum
\newcount\ganttwidth
\newdimen\ganttlastx \ganttlastx = 0cm
\newdimen\nextganttlastx
\newdimen\titleunitlength \titleunitlength = 1cm
\newdimen\ganttunitlength \ganttunitlength = 1cm
\newdimen\gantttmpa
\newdimen\gantttmpb
% workaround for titleelement
\def\!!row{\numexpr\ganttnum*-1\relax}
\def\setupgantt
{\bgroup
\dosingleempty
\dosetupgantt}
\def\dosetupgantt[#1]%
{\egroup
\getparameters[\????gantt][#1]}
\setupgantt
[factor=1,
xunitlength=1cm,
style=\tf,
titlestyle=\tfx,
drawledgerline=false]
\def\setupganttbar
{\bgroup
\catcode`\#=\@@other
\dosingleempty
\dosetupganttbar}
\def\dosetupganttbar[#1]%
{\egroup
\getparameters[\????gantt][#1]}
\setupganttbar
[pattern=north east lines,
color=black]
% The gantt environment draws the canvas of a gantt figure (realized as tikzpicture)
% The usage is \startgantt[...]{no of Tasks to plot}{no of time slots}
% The optional argument [...] can be filled in a key=value syntax, using one or more of the following keys:
%
% xunitlength - length of one time slot (default: 1cm)
% style - style of labels (default: \tf)
% titlestyle - style of title section (default: \tfx)
% drawledgerline - Switch to enable/disable the drawing of horizontal ledger lines (default value: false)
\long\def\dostartgantt[#1]#2#3%
{\getparameters[\????gantt][#1]%
\gdef\gantt!factor{\@@@@ganttfactor}
\gdef\gantt!ganttunitlength{\@@@@ganttxunitlength}
\gdef\gantt!style{\getvalue{@@ganttstyle}}
\gdef\gantt!titlestyle{\getvalue{@@gantttitlestyle}}
\gdef\gantt!drawledgerline{\@@@@ganttdrawledgerline}
\bgroup
\newcount\ganttx \ganttx=0
\newcount\ganttheight
\def\ganttxstringtop{}
\def\ganttxstringbottom{}
\global\ganttwidth=#3
\global\ganttnum=0
\ganttheight=#2
\advance\ganttheight by 1
\startMPdrawing
linecap := squared;
linejoin := mitered;
draw (0,0.5cm)--(0,1.4cm-\the\ganttheight*cm);
draw (\the\ganttwidth*\gantt!ganttunitlength,0.5cm)--(\the\ganttwidth*\gantt!ganttunitlength,1.4cm-\the\ganttheight*cm);
% draw x axis
draw (0cm,-#2*cm+0.4cm)--(\the\ganttwidth*\gantt!ganttunitlength,-#2*cm+0.4cm);
% draw grid
for t=1 upto \the\ganttwidth:
draw (\gantt!ganttunitlength*t,-0.5cm)--(\gantt!ganttunitlength*t,1.4cm-\the\ganttheight*cm) dashed withdots;
endfor
\stopMPdrawing
\egroup
}
\def\startgantt%
{\dosingleempty\dostartgantt}
\def\stopgantt%
{\startMPdrawing
% debug
% draw bbox currentpicture withcolor .625red;
currentpicture := currentpicture scaled \gantt!factor;
\stopMPdrawing
\MPdrawingdonetrue\getMPdrawing
\resetMPdrawing
}
% ganttitle is the environment for drawing the title section
\definestartstop[ganttitle][
before={
\ganttlastx = 0cm
},
after={
\ganttlastx = 0cm
\doglobal\decrement\ganttnum
}
]
% \titleelement draws one element of the title
% usage: \titleelement{label}{length}
\long\def\dotitleelement#1#2%
{\gantttmpa=\dimexpr\gantt!ganttunitlength*#2\relax
\divide\gantttmpa by 2
\startMPdrawing
draw (\the\ganttlastx,0.5cm-\the\!!row*cm)--(\the\ganttlastx+#2*\gantt!ganttunitlength,0.5cm-\the\!!row*cm)--(\the\ganttlastx+#2*\gantt!ganttunitlength,0.5cm-0.6cm-\the\!!row*cm)--(\the\ganttlastx,0.5cm-0.6cm-\the\!!row*cm)--cycle;
path diam; diam = (\the\ganttlastx,0.5cm-\the\!!row*cm)--(\the\ganttlastx+#2*\gantt!ganttunitlength,0.5cm-0.6cm-\the\!!row*cm);
label (btex \getvalue{v!titlestyle} #1 etex, center diam);
\stopMPdrawing
\ganttlastx=\dimexpr\ganttlastx+\gantt!ganttunitlength*#2\relax
}
\def\titleelement%
{\dotitleelement}
% \numtitle draws a numbered sequence of title elements
% usage: \numtitle{start number}{increment}{end number}{length of each title element}
\long\def\donumtitle#1#2#3#4%
{\gantttitlenum=#1
\dostepwiserecurse{#1}{#3}{#2}{
\titleelement{\the\gantttitlenum}{#4}
\advance\gantttitlenum by #2
}
}
\def\numtitle%
{\donumtitle}
% \ganttbar draws a single, unconnected bar for representing a task
% usage: \ganttbar[pattern=<pattern>,color=<color>]{label}{start}{length}
% where the optional comma separated arguments are:
% pattern - not implemented with MetaPost yet! (FIXME)
% color - a color of the pattern (e.g. red, green blue gray, dark gray)
\long\def\doganttbar[#1]#2#3#4%
{\bgroup
\getparameters[\????gantt][#1]%
\edef\gantt!pattern{\@@@@ganttpattern}
\edef\gantt!color{\@@@@ganttcolor}
\gantttmpa=\dimexpr\gantt!ganttunitlength*#3\relax
\gantttmpb=\dimexpr\gantt!ganttunitlength*#4+\gantttmpa\relax
\doif{\gantt!drawledgerline}{true}{
\startMPdrawing
draw (0,\ganttnum*cm-0.2cm)--(\the\ganttwidth*\gantt!ganttunitlength,\ganttnum*cm-0.2cm) dashed withdots;
\stopMPdrawing
}
\startMPdrawing
path diag; diag = (0,\ganttnum*cm+0.1cm)--(0,\ganttnum*cm+0.5cm);
label.lft (btex \getvalue{v!style} #2 etex, center diag);
path f; f := (\the\gantttmpa,\ganttnum*cm+0.1cm)--(\the\gantttmpb,\ganttnum*cm+0.1cm)--(\the\gantttmpb,\ganttnum*cm+0.5cm)--(\the\gantttmpa,\ganttnum*cm+0.5cm)--cycle;
hatchoptions(withcolor \gantt!color);
draw f withcolor black;
% workaround for transparent bug
% hatchfill f withcolor transparent("normal",0,white) withcolor (45,1mm,-0.5bp);
hatchfill f withcolor (45,1mm,-0.5bp);
\stopMPdrawing
\global\ganttlastx=\gantttmpb
\doglobal\decrement\ganttnum
\egroup
}
\def\ganttbar
{\dosingleempty\doganttbar}
% \ganttcon draws an arrow between to bars with specified coordinates
% usage: \ganttcon{startx}{starty}{endx}{endy}
\long\def\doganttcon#1#2#3#4%
{\bgroup
\startMPdrawing
begingroup;
interim linecap := squared;
interim linejoin := rounded;
drawarrow (#1*\gantt!ganttunitlength,-#2*cm+0.1cm+0.2cm)--(#1*\gantt!ganttunitlength+0.4*\gantt!ganttunitlength,-#2*cm+0.1*cm+0.2*cm)--(#1*\gantt!ganttunitlength+0.4*\gantt!ganttunitlength,-#2*cm-0.4*cm+0.2*cm)--(#1*\gantt!ganttunitlength-0.4*\gantt!ganttunitlength,-#2*cm-0.4*cm+0.2*cm)--(#1*\gantt!ganttunitlength-0.4*\gantt!ganttunitlength,-#4*cm+0.1*cm+0.2*cm)--(#3*\gantt!ganttunitlength,-#4*cm+0.1*cm+0.2*cm);
endgroup;
\stopMPdrawing
\egroup
}
\def\ganttcon
{\doganttcon}
% \ganttbarcon draws a single bar *and* connects the bar with the previous bar for
% consecutive tasks
% usage: \ganttbarcon[pattern=<pattern>,color=<color>]{label}{start}{length}
% where the optional pattern argument are the same as for \ganttbar
\long\def\doganttbarcon[#1]#2#3#4%
{\bgroup
\getparameters[\????gantt][#1]%
\edef\gantt!pattern{\@@@@ganttpattern}
\edef\gantt!color{\@@@@ganttcolor}
\nextganttlastx = \dimexpr\ganttlastx+\ganttunitlength*1\relax
\ifdim\nextganttlastx>\dimexpr\gantt!ganttunitlength*#3\relax
\startMPdrawing
begingroup;
interim linecap := squared;
interim linejoin := rounded;
drawarrow (\the\ganttlastx,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+0.6*cm+0.2*cm)--(\the\ganttlastx-0.4*\gantt!ganttunitlength,\ganttnum*cm+0.6*cm+0.2*cm)--(\the\ganttlastx-0.4*\gantt!ganttunitlength,\ganttnum*cm+0.1*cm+0.2*cm)--(#3*\gantt!ganttunitlength,\ganttnum*cm+0.1*cm+0.2*cm);
endgroup;
\stopMPdrawing
\else
\startMPdrawing
begingroup;
interim linecap := squared;
interim linejoin := rounded;
drawarrow (\the\ganttlastx,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+0.1*cm+0.2*cm)--(#3*\gantt!ganttunitlength,\ganttnum*cm+0.1*cm+0.2*cm);
endgroup;
\stopMPdrawing
\fi
\ganttbar[#1]{#2}{#3}{#4}
\egroup
}
\def\ganttbarcon
{\dosingleempty\doganttbarcon}
% \ganttgroup draws a bar to group tasks
% usage: \ganttgroup{label}{start}{length}
\long\def\doganttgroup#1#2#3%
{\bgroup
\gantttmpa=\dimexpr\gantt!ganttunitlength*#2\relax
\gantttmpb=\dimexpr\gantt!ganttunitlength*#3+\gantttmpa\relax
\doif{\gantt!drawledgerline}{true}{
\startMPdrawing
draw (0,\ganttnum*cm-0.2cm)--(\the\ganttwidth*\gantt!ganttunitlength,\ganttnum*cm-0.2cm) dashed withdots;
\stopMPdrawing
}
\startMPdrawing
pen diamond; diamond := makepen fulldiamond;
path diag; diag = (0,\ganttnum*cm+0.1cm)--(0,\ganttnum*cm+0.5cm);
label.lft (btex \getvalue{v!style}\bf #1 etex, center diag);
fill (\the\gantttmpa-0.14*cm,\ganttnum*cm+0.2cm)--(\the\gantttmpb+0.14*cm,\ganttnum*cm+0.2cm)--(\the\gantttmpb+0.14*cm,\ganttnum*cm+0.4cm)--(\the\gantttmpa-0.14*cm,\ganttnum*cm+0.4cm)--cycle withcolor black;
fill fulldiamond scaled 0.3cm shifted (\the\gantttmpa+0.01cm,\ganttnum*cm+0.2cm) withcolor black;
fill fulldiamond scaled 0.3cm shifted (\the\gantttmpb-0.01cm,\ganttnum*cm+0.2cm) withcolor black;
\stopMPdrawing
\global\ganttlastx=\gantttmpb
\doglobal\decrement\ganttnum
\egroup
}
\def\ganttgroup
{\doganttgroup}
% \ganttmilestone, draw a diamond to represent a milestone
% usage: \ganttgroup[color=<color>]{label}{start}
% color - a tikz color of the pattern (e.g. red, green blue gray, dark gray)
% for more information see the tikz documentation
% Declaring layers to abvoid superposition when you connect a \ganttmileston with a task
\long\def\doganttmilestone[#1]#2#3%
{\bgroup
\getparameters[\????gantt][#1]%
\edef\gantt!color{\@@@@ganttcolor}
\gantttmpa=\dimexpr\gantt!ganttunitlength*#3\relax
\gantttmpb=\dimexpr\gantt!ganttunitlength*0+\gantttmpa\relax
\doif{\gantt!drawledgerline}{true}{
\startMPdrawing
draw (0,\ganttnum*cm-0.2cm)--(\the\ganttwidth*\gantt!ganttunitlength,\ganttnum*cm-0.2cm) dashed withdots;
\stopMPdrawing
}
\startMPdrawing
pen diamond; diamond := makepen fulldiamond;
path diag; diag = (0,\ganttnum*cm+0.1cm)--(0,\ganttnum*cm+0.5cm);
label.lft (btex \getvalue{v!style} #2 etex, center diag);
fill fulldiamond scaled 0.3cm shifted (\the\gantttmpb,\ganttnum*cm+0.3cm) withcolor \gantt!color;
\stopMPdrawing
\global\ganttlastx=\gantttmpb
\doglobal\decrement\ganttnum
\egroup
}
\def\ganttmilestone
{\dosingleempty\doganttmilestone}
% \ganttmilestonecon draws a single diamond *and* connects the diamond with the previous task
% usage: \ganttmilestonecon[color=<color>]{label}{start}{length}
% where the optional color argument are the same as for \ganttbar and \ganttmilestone
\long\def\doganttmilestonecon[#1]#2#3%
{\bgroup
\getparameters[\????gantt][#1]%
\edef\gantt!color{\@@@@ganttcolor}
\nextganttlastx = \dimexpr\ganttlastx+\ganttunitlength*1\relax
\ifdim\nextganttlastx>\dimexpr\gantt!ganttunitlength*#3\relax
\startMPdrawing
begingroup;
interim linecap := squared;
interim linejoin := rounded;
drawarrow (\the\ganttlastx,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+0.6*cm+0.2*cm)--(\the\ganttlastx-0.4*\gantt!ganttunitlength-0.14*cm,\ganttnum*cm+0.6*cm+0.2*cm)--(\the\ganttlastx-0.4*\gantt!ganttunitlength-0.14*cm,\ganttnum*cm+0.1*cm+0.2*cm)--(#3*\gantt!ganttunitlength-0.14*cm,\ganttnum*cm+0.1*cm+0.2*cm);
endgroup;
\stopMPdrawing
\else
\startMPdrawing
begingroup;
interim linecap := squared;
interim linejoin := rounded;
drawarrow (\the\ganttlastx,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+1.1*cm+0.2*cm)--(\the\ganttlastx+0.4*\gantt!ganttunitlength,\ganttnum*cm+0.1*cm+0.2*cm)--(#3*\gantt!ganttunitlength-0.14*cm,\ganttnum*cm+0.1*cm+0.2*cm);
endgroup;
\stopMPdrawing
\fi
\ganttmilestone[#1]{#2}{#3}
\egroup
}
\def\ganttmilestonecon
{\dosingleempty\doganttmilestonecon}
\protect \stopmodule
|