[Tex/LaTex] How to draw a scheduling scheme

pgfgantttikz-pgf

I would like to draw an arbitration scheduling scheme. I tried to draw one with xfig, but the result is… not so nice ;-):

enter image description here

Does anyone know a good way to draw this in LaTeX? The result don't have to be exactly like my example. I also tried the pgfgantt package, but don't know how to change the right border from the bar of "Master 3"…

\begin{ganttchart}[vgrid, hgrid]{15}
\ganttbar{Master 1}{7}{9} \\
\ganttbar{Master 2}{2}{4} \\
\ganttbar{Master 3}{5}{6} \ganttbar{}{10}{10} \\
\ganttbar{Master 4}{11}{13}
\end{ganttchart}

Best Answer

With a few adjustments (the path picture bounding box is clipped against the path picture), a few empirical values (the .6\pgflinewidth probably won’t work for other line widths) and without vertical correction of the bar (the same reason as before), one can achieve the following.

Code

\documentclass[tikz]{standalone}
\usepackage{pgfgantt}
\usetikzlibrary{decorations.pathmorphing}
\tikzset{Shift/.style 2 args={shift={(+#1.5\pgflinewidth,+#2.5\pgflinewidth)}}}
\newcommand*{\pgfkeysstylelet}[2]{\expandafter\let\csname pgfk@#1/.@cmd\expandafter\endcsname\csname pgfk@#2/.@cmd\endcsname}
\ganttset{
    /tikz/broken/.style={
        decoration={
            name=zigzag,
            amplitude=+1pt,
            segment length=+2pt}},
    broken right/.code={
        \pgfkeysstylelet{/pgfgantt/bar backup}{/pgfgantt/bar}
        \pgfkeysalso{
            /pgfgantt/bar left shift=-.5\pgflinewidth/\ganttvalueof{x unit},
            /pgfgantt/bar right shift=(.5\pgflinewidth+.5\pgfdecorationsegmentamplitude)/\ganttvalueof{x unit},
            /pgfgantt/bar/.append style={
                draw=none,
                path picture={
                    \draw[/pgfgantt/bar backup, broken] ([Shift=+-] path picture bounding box.north west) |-
                                                        ([Shift=-+, xshift=-\pgfdecorationsegmentamplitude-.6\pgflinewidth] path picture bounding box.south east)
                                           decorate {-- ([Shift=--, xshift=-\pgfdecorationsegmentamplitude-.6\pgflinewidth] path picture bounding box.north east)}
                                                     -- cycle;}}}},
    broken left/.code={
        \pgfkeysstylelet{/pgfgantt/bar backup}{/pgfgantt/bar}
        \pgfkeysalso{
            /pgfgantt/bar right shift=.5\pgflinewidth/\ganttvalueof{x unit},
            /pgfgantt/bar left shift=(-.5\pgflinewidth-.5\pgfdecorationsegmentamplitude)/\ganttvalueof{x unit},
            /pgfgantt/bar/.append style={
                draw=none,
                path picture={
                    \draw[/pgfgantt/bar backup, broken] ([Shift=--] path picture bounding box.north east) |-
                                                        ([Shift=++, xshift=\pgfdecorationsegmentamplitude+.6\pgflinewidth] path picture bounding box.south west)
                                           decorate {-- ([Shift=+-, xshift=\pgfdecorationsegmentamplitude+.6\pgflinewidth] path picture bounding box.north west)}
                                                     -- cycle;}}}}}
\begin{document}
\begin{ganttchart}[vgrid, hgrid]{15}
\ganttbar{Master 1}{7}{9} \\
\ganttbar{Master 2}{2}{4} \\
\ganttbar[broken right]{Master 3}{5}{6} \ganttbar[broken left]{}{10}{10} \\
\ganttbar{Master 4}{11}{13}
\end{ganttchart}
\end{document}

Output

enter image description here

enter image description here

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