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uml-tikz.sty
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\NeedsTeXFormat{LaTeX2e}[1994/06/01]
\ProvidesPackage{uml-tikz}[2019/04/29]
\RequirePackage{tikz}
\RequirePackage{tcolorbox}
\RequirePackage{etoolbox}
\RequirePackage{calc}
\RequirePackage{xifthen}
\RequirePackage{xparse}
\tcbuselibrary{skins}
\usetikzlibrary{arrows.meta}
\newcommand{\tcbheight}{\the\dimexpr\tcb@raster@box@height-\kvtcb@raster@skip@before-\kvtcb@raster@skip@after}
\newtcolorbox{class}[1]{colback=yellow!10!white,colframe=yellow!50!black,title=#1,center title, width=\umlClassWidth}
%--Init variables
\newcommand{\umlClassWidth}{\linewidth}
\newlength{\umlPositionX}
\setlength{\umlPositionX}{0cm}
\newlength{\umlPositionY}
\setlength{\umlPositionY}{0cm}
\newlength{\umlHSpacing}
\setlength{\umlHSpacing}{4cm}
\newlength{\umlVSpacing}
\setlength{\umlVSpacing}{2cm}
\newlength{\umlAssoziationOneX}
\setlength{\umlAssoziationOneX}{0cm}
\newlength{\umlAssoziationOneY}
\setlength{\umlAssoziationOneY}{0cm}
\newlength{\umlAssoziationTwoX}
\setlength{\umlAssoziationTwoX}{0cm}
\newlength{\umlAssoziationTwoY}
\setlength{\umlAssoziationTwoY}{0cm}
\newlength{\umlAssoziationXDiff}
\setlength{\umlAssoziationXDiff}{0cm}
\newlength{\umlAssoziationYDiff}
\setlength{\umlAssoziationYDiff}{0cm}
\newlength{\umlArrowLength}
\setlength{\umlArrowLength}{4mm}
\newlength{\umlMultiplicityDistance}
\setlength{\umlMultiplicityDistance}{0.3cm}
\newcommand{\umlArrowStyle}{}
\newcounter{umlenvironmentcounter}
%--The envrionment for classes
\newenvironment{umlpicture}{\stepcounter{umlenvironmentcounter} \begin{tikzpicture}}{\end{tikzpicture}}
%--The command to create a new class
\newcommand{\umlClass}[3]{
%
\edef\temp{%
\noexpand\newlength{\csname umlPositionX#1\arabic{umlenvironmentcounter}\endcsname}
\noexpand\setlength{\csname umlPositionX#1\arabic{umlenvironmentcounter}\endcsname}{\umlPositionX}
\noexpand\newlength{\csname umlPositionY#1\arabic{umlenvironmentcounter}\endcsname}
\noexpand\setlength{\csname umlPositionY#1\arabic{umlenvironmentcounter}\endcsname}{\umlPositionY}
}
\temp
%
\node (#1\arabic{umlenvironmentcounter}) at (\csname umlPositionX#1\arabic{umlenvironmentcounter}\endcsname,\csname umlPositionY#1\arabic{umlenvironmentcounter}\endcsname) {
\begin{class}{#1}
#2
\tcblower
#3
\end{class}
};
\edef\tmp{%
\noexpand\tcbsetmacrotoheightofnode{\csname umlBoxHeight#1\arabic{umlenvironmentcounter}\endcsname}{#1\arabic{umlenvironmentcounter}}
\noexpand\tcbsetmacrotowidthofnode{\csname umlBoxWidth#1\arabic{umlenvironmentcounter}\endcsname}{#1\arabic{umlenvironmentcounter}}
}
\tmp
}
%--Commands for positioning of the classes
\newcommand{\umlRightOf}[2][1]{
\setlength{\umlPositionX}{\csname umlPositionX#2\arabic{umlenvironmentcounter}\endcsname + \csname umlBoxWidth#2\arabic{umlenvironmentcounter}\endcsname*#1 + \umlHSpacing*#1}
\setlength{\umlPositionY}{\csname umlPositionY#2\arabic{umlenvironmentcounter}\endcsname}}
%
\newcommand{\umlLeftOf}[2][1]{
\setlength{\umlPositionX}{\csname umlPositionX#2\arabic{umlenvironmentcounter}\endcsname - \csname umlBoxWidth#2\arabic{umlenvironmentcounter}\endcsname*#1 - \umlHSpacing*#1}
\setlength{\umlPositionY}{\csname umlPositionY#2\arabic{umlenvironmentcounter}\endcsname}}
%
\newcommand{\umlDownOf}[2][1]{
\setlength{\umlPositionX}{\csname umlPositionX#2\arabic{umlenvironmentcounter}\endcsname}
\setlength{\umlPositionY}{\csname umlPositionY#2\arabic{umlenvironmentcounter}\endcsname - \csname umlBoxHeight#2\arabic{umlenvironmentcounter}\endcsname*#1/2 - \umlVSpacing*#1}}
%
\newcommand{\umlUpOf}[2][1]{
\setlength{\umlPositionX}{\csname umlPositionX#2\arabic{umlenvironmentcounter}\endcsname}
\setlength{\umlPositionY}{\csname umlPositionY#2\arabic{umlenvironmentcounter}\endcsname + \csname umlBoxHeight#2\arabic{umlenvironmentcounter}\endcsname*#1/2 + \umlVSpacing*#1}}
\NewDocumentCommand{\umlRightDownOf}{ O{1} O{1} m }{
\setlength{\umlPositionX}{\csname umlPositionX#3\arabic{umlenvironmentcounter}\endcsname + \csname umlBoxWidth#3\arabic{umlenvironmentcounter}\endcsname*#1 + \umlHSpacing*#1}
\setlength{\umlPositionY}{\csname umlPositionY#3\arabic{umlenvironmentcounter}\endcsname - \csname umlBoxHeight#3\arabic{umlenvironmentcounter}\endcsname*#2/2 - \umlVSpacing*#2}}
\NewDocumentCommand{\umlRightUpOf}{ O{1} O{1} m }{
\setlength{\umlPositionX}{\csname umlPositionX#3\arabic{umlenvironmentcounter}\endcsname + \csname umlBoxWidth#3\arabic{umlenvironmentcounter}\endcsname*#1 + \umlHSpacing*#1}
\setlength{\umlPositionY}{\csname umlPositionY#3\arabic{umlenvironmentcounter}\endcsname + \csname umlBoxHeight#3\arabic{umlenvironmentcounter}\endcsname*#2/2 + \umlVSpacing*#2}}
\NewDocumentCommand{\umlLeftDownOf}{ O{1} O{1} m }{
\setlength{\umlPositionX}{\csname umlPositionX#3\arabic{umlenvironmentcounter}\endcsname - \csname umlBoxWidth#3\arabic{umlenvironmentcounter}\endcsname*#1 - \umlHSpacing*#1}
\setlength{\umlPositionY}{\csname umlPositionY#3\arabic{umlenvironmentcounter}\endcsname - \csname umlBoxHeight#3\arabic{umlenvironmentcounter}\endcsname*#2/2 - \umlVSpacing*#2}}
\NewDocumentCommand{\umlLeftUpOf}{ O{1} O{1} m }{
\setlength{\umlPositionX}{\csname umlPositionX#3\arabic{umlenvironmentcounter}\endcsname - \csname umlBoxWidth#3\arabic{umlenvironmentcounter}\endcsname*#1 - \umlHSpacing*#1}
\setlength{\umlPositionY}{\csname umlPositionY#3\arabic{umlenvironmentcounter}\endcsname + \csname umlBoxHeight#3\arabic{umlenvironmentcounter}\endcsname*#2/2 + \umlVSpacing*#2}}
%--switch to seperate between different arrow styles
\newcommand{\umlInitArrowStyle}[1]{
\ifstrequal{#1}{->}{%
\renewcommand{\umlArrowStyle}{-{Straight Barb[length = 0.5*\the\umlArrowLength]}}
}{
\ifstrequal{#1}{<-}{%
\renewcommand{\umlArrowStyle}{{Straight Barb[length = 0.5*\the\umlArrowLength]}-}
}{
\ifstrequal{#1}{<->}{%
\renewcommand{\umlArrowStyle}{{Straight Barb[length = 0.5*\the\umlArrowLength]}-{Straight Barb[length = 0.5*\the\umlArrowLength]}}
}{
\ifstrequal{#1}{- >}{%
\renewcommand{\umlArrowStyle}{-{Latex[length = \the\umlArrowLength, open]}}
}{
\ifstrequal{#1}{< -}{%
\renewcommand{\umlArrowStyle}{{Latex[length = \the\umlArrowLength, open]}-}
}{
\ifstrequal{#1}{x->}{%
\renewcommand{\umlArrowStyle}{{Rays[length = \the\umlArrowLength]}-{Straight Barb[length = 0.5*\the\umlArrowLength]}}
}{
\ifstrequal{#1}{<-x}{%
\renewcommand{\umlArrowStyle}{{Straight Barb[length = 0.5*\the\umlArrowLength]}-{Rays[length = \the\umlArrowLength]}}
}{
\ifstrequal{#1}{-< >}{%
\renewcommand{\umlArrowStyle}{-{Diamond[length = \the\umlArrowLength, open]}}
}{
\ifstrequal{#1}{< >-}{%
\renewcommand{\umlArrowStyle}{{Diamond[length = \the\umlArrowLength, open]}-}
}{
\ifstrequal{#1}{-<>}{
\renewcommand{\umlArrowStyle}{-{Diamond[length = \the\umlArrowLength]}}
}{
\ifstrequal{#1}{<>-}{
\renewcommand{\umlArrowStyle}{{Diamond[length = \the\umlArrowLength]}-}
}{
\renewcommand{\umlArrowStyle}{}
}
}
}
}
}
}
}
}
}
}
}
}
%--comands to create different assoziations
\newcommand{\umlGetAssoziationDifferences}[2]{
\tikz@scan@one@point\pgfutil@firstofone(#1)\relax
\setlength{\umlAssoziationOneX}{\the\pgf@x};
\setlength{\umlAssoziationOneY}{\the\pgf@y};
\tikz@scan@one@point\pgfutil@firstofone(#2)\relax
\setlength{\umlAssoziationTwoX}{\the\pgf@x};
\setlength{\umlAssoziationTwoY}{\the\pgf@y};
\setlength{\umlAssoziationXDiff}{\the\umlAssoziationOneX-\the\umlAssoziationTwoX}
\setlength{\umlAssoziationYDiff}{\the\umlAssoziationOneY-\the\umlAssoziationTwoY}
\ifthenelse{\lengthtest{\umlAssoziationXDiff<0pt}}{\setlength{\umlAssoziationXDiff}{\the\umlAssoziationTwoX-\the\umlAssoziationOneX}}{}
\ifthenelse{\lengthtest{\umlAssoziationYDiff<0pt}}{\setlength{\umlAssoziationYDiff}{\the\umlAssoziationTwoY-\the\umlAssoziationOneY}}{}
}
\NewDocumentCommand{\umlOneOne}{ O{} O{} O{} m m}{%
\umlInitArrowStyle{#1}
\umlGetAssoziationDifferences{#4\arabic{umlenvironmentcounter}}{#5\arabic{umlenvironmentcounter}}
%
\ifthenelse{\lengthtest{\umlAssoziationXDiff>\umlAssoziationYDiff}}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, below] (TextNode) [below=\the\umlMultiplicityDistance] {1} node [very near start, above] (TextNode) [above=\the\umlMultiplicityDistance] {#2} node [very near end, below] (TextNode) [below=\the\umlMultiplicityDistance] {1} node [very near end, above] (TextNode) [above=\the\umlMultiplicityDistance] {#3};
}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, right] (TextNode) [right=\the\umlMultiplicityDistance] {1} node [very near start, left] (TextNode) [left=\the\umlMultiplicityDistance] {#2} node [very near end, right] (TextNode) [right=\the\umlMultiplicityDistance] {1} node [very near end, left] (TextNode) [left=\the\umlMultiplicityDistance] {#3};
}
}
\NewDocumentCommand{\umlOneN}{ O{} O{} O{} m m}{%
\umlInitArrowStyle{#1}
\umlGetAssoziationDifferences{#4\arabic{umlenvironmentcounter}}{#5\arabic{umlenvironmentcounter}}
%
\ifthenelse{\lengthtest{\umlAssoziationXDiff>\umlAssoziationYDiff}}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, below] (TextNode) [below=\the\umlMultiplicityDistance] {1} node [very near start, above] (TextNode) [above=\the\umlMultiplicityDistance] {#2} node [very near end, below] (TextNode) [below=\the\umlMultiplicityDistance] {*} node [very near end, above] (TextNode) [above=\the\umlMultiplicityDistance] {#3};
}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, right] (TextNode) [right=\the\umlMultiplicityDistance] {1} node [very near start, left] (TextNode) [left=\the\umlMultiplicityDistance] {#2} node [very near end, right] (TextNode) [right=\the\umlMultiplicityDistance] {*} node [very near start, left] (TextNode) [left=\the\umlMultiplicityDistance] {#3};
}
}
\NewDocumentCommand{\umlNN}{ O{} O{} O{} m m}{%
\umlInitArrowStyle{#1}
\umlGetAssoziationDifferences{#4\arabic{umlenvironmentcounter}}{#5\arabic{umlenvironmentcounter}}
%
\ifthenelse{\lengthtest{\umlAssoziationXDiff>\umlAssoziationYDiff}}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, below] (TextNode) [below=\the\umlMultiplicityDistance] {*} node [very near start, above] (TextNode) [above=\the\umlMultiplicityDistance] {#2} node [very near end, below] (TextNode) [below=\the\umlMultiplicityDistance] {*} node [very near start, above] (TextNode) [above=\the\umlMultiplicityDistance] {#3};
}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, right] (TextNode) [right=\the\umlMultiplicityDistance] {*} node [very near start, left] (TextNode) [left=\the\umlMultiplicityDistance] {#2} node [very near end, right] (TextNode) [right=\the\umlMultiplicityDistance] {*} node [very near end, left] (TextNode) [left=\the\umlMultiplicityDistance] {#3};
}
}
\NewDocumentCommand{\umlFree}{ O{} O{} O{} m m m m}{%
\umlInitArrowStyle{#1}
\umlGetAssoziationDifferences{#4\arabic{umlenvironmentcounter}}{#5\arabic{umlenvironmentcounter}}
%
\ifthenelse{\lengthtest{\umlAssoziationXDiff>\umlAssoziationYDiff}}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, below] (TextNode) [below=\the\umlMultiplicityDistance] {#6} node [very near start, above] (TextNode) [above=\the\umlMultiplicityDistance] {#2} node [very near end, below] (TextNode) [below=\the\umlMultiplicityDistance] {#7} node [very near end, above] (TextNode) [above=\the\umlMultiplicityDistance] {#3};
}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, right] (TextNode) [right=\the\umlMultiplicityDistance] {#6} node [very near start, left] (TextNode) [left=\the\umlMultiplicityDistance] {#2} node [very near end, right] (TextNode) [right=\the\umlMultiplicityDistance] {#7} node [very near end, left] (TextNode) [left=\the\umlMultiplicityDistance] {#3};
}
}
\newcommand{\umlSelf}[4][]{\umlInitArrowStyle{#1}
\draw[\umlArrowStyle] (#2\arabic{umlenvironmentcounter}.east) -- ++ (0.5, 0) node [near start, below] (TextNode) {#3} -- ++ (0,-\csname umlBoxHeight#2\arabic{umlenvironmentcounter}\endcsname/2 - 0.5cm) -- ++ (- \csname umlBoxWidth#2\arabic{umlenvironmentcounter}\endcsname/2 - 0.5cm, 0) -- (#2\arabic{umlenvironmentcounter}.south) node [near end, right] (TextNode) {#4};}
\NewDocumentCommand{\umlNon}{ O{} O{} O{} m m}{%
\umlInitArrowStyle{#1}
\umlGetAssoziationDifferences{#4\arabic{umlenvironmentcounter}}{#5\arabic{umlenvironmentcounter}}
\ifthenelse{\lengthtest{\umlAssoziationXDiff>\umlAssoziationYDiff}}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, above] (TextNode) [above=\the\umlMultiplicityDistance] {#2} node [very near end, above] (TextNode) [above=\the\umlMultiplicityDistance] {#3};
}{
\draw[\umlArrowStyle] (#4\arabic{umlenvironmentcounter}) -- (#5\arabic{umlenvironmentcounter}) node [very near start, left] (TextNode) [left=\the\umlMultiplicityDistance] {#2} node [very near end, left] (TextNode) [left=\the\umlMultiplicityDistance] {#3};
}
}