gantt.tex

%!TEX root = proposal.tex

\makeatletter
\tikzset{%
  /pgfgantt/time slots/.code={%
    \tikzset{%
      /pgfgantt/time slots/.cd,
      #1,
      /pgfgantt/.cd,
    }%
  },
  /pgfgantt/time slots/.search also={/pgfgantt},
  /pgfgantt/time slots/.cd,
  width/.store in=\ts@width,
  width=\textwidth,
  slots/.store in=\totaltimeslots,
  slots=20,
  label width/.store in=\ts@labelwidth,
  label width=25mm,
  calc x unit/.code n args=3{%
    \pgfmathsetmacro\ts@xunit{(#1-#2-0.6667em-2*\pgflinewidth)/#3}%
    \tikzset{%
      /pgfgantt/x unit=\ts@xunit pt,
    }%
  },
  widest/.code={%
    \pgfmathsetmacro\ts@wdlabel{width("#1")}%
    \tikzset{/pgfgantt/time slots/label width=\ts@wdlabel pt}%
  },
  calc x unit aux width/.style={/pgfgantt/time slots/calc x unit={#1}{\ts@labelwidth}{\totaltimeslots}},
  calc x unit aux label width/.style={/pgfgantt/time slots/calc x unit={\ts@width}{#1}{\totaltimeslots}},
  calc x unit aux slots/.style={/pgfgantt/time slots/calc x unit={\ts@width}{\ts@labelwidth}{#1}},
  width/.forward to=/pgfgantt/time slots/calc x unit aux width,
  slots/.forward to=/pgfgantt/time slots/calc x unit aux slots,
  label width/.forward to=/pgfgantt/time slots/calc x unit aux label width,
}
\makeatother

\begin{figure}[!hb]
    \centering
    \begin{ganttchart}[
        time slots={slots=\arabic{@duration}, widest=TX.X},
        bar height=.8,
        bar inline label anchor=west,
        bar inline label node/.append style={right, color=white, font=\small},
        bar label font=\small,
        bar/.append style={draw=black, fill=black!30},
        % canvas/.append style={fill=none, draw=gray},
        group height=.8,
        group inline label anchor=west,
        group inline label node/.append style={right, color=white, font=\small},
        group label font=\bfseries\small,
        group left shift=0,
        group peaks height=.25,
        group peaks tip position=0,
        group right shift=0,
        group/.append style={draw=black, fill=black!70},
        milestone inline label node/.append style={font=\footnotesize},
        milestone top shift=.55,
        milestone/.append style={xscale=.55},
        title height=1,
        title label font=\footnotesize,
        % title/.append style={fill=none, draw=gray},
        vgrid,
        y unit chart=.55cm,
        y unit title=.55cm,
    ]{1}{\arabic{@duration}}
        \gantttitle{\acronym{} Project Month}{\arabic{@duration}} \\
        \gantttitlelist{1,...,\arabic{@duration}}{1} \\
        \ganttchartdata%
    \end{ganttchart}
\caption{\acronym{} Gantt chart.}
\label{fig:gantt}
\end{figure}