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% objects.tex
%
% written 2022 by Werner Lemberg <wl@gnu.org>
% This file contains graphics used for the 'FreeType Design' documentation,
% part 2, 'Public Objects and Classes', and part 3, 'Internal Objects and
% Classes'.
% Here is one possibility to convert this LaTeX file to both PNG and SVG
% formats.
%
% xelatex objects.tex
%
% pdftoppm -png -f 1 -l 2 -r 120 objects.pdf objects
% optipng objects-*.png
%
% for i in 1 2; do
% pdf2svg objects.pdf objects-$i.svg $i
% done
\documentclass[tikz,
svgnames, % for xcolor
border=3mm]{standalone}
\usepackage{libertinus}
\usetikzlibrary{
arrows.meta,
calc,
positioning
}
% Node styles.
\tikzset{
%
% For normal lines.
line/.style={
line width=1pt},
%
% For thin lines.
thin line/.style={
line width=0.5pt},
%
% For the relation 'A has B'.
has/.style={
thin line,
{Kite[length=12pt,
width=6pt,
inset=4pt]}-},
%
% For the relation 'a child of A has B'.
child has/.style={
thin line,
{Kite[open,
length=12pt,
width=6pt,
inset=4pt]}-},
%
% For boxes in general.
box/.style={
line,
draw,
inner xsep=5mm,
inner ysep=3mm},
%
% For boxes in the legend.
legend box/.style={
thin line,
draw}
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
% Basic object relationship.
\begin{tikzpicture}
\node[box] (F) {FT\_Face};
\node[box] (L) [above=1cm of F] {FT\_Library};
\node[box] (G) [below left=0.5cm and 1cm of F]{FT\_GlyphSlot};
\node[box] (S) [below=1.5cm of F] {FT\_Size};
\node[box] (C) [below right=0.5cm and 1cm of F]{FT\_CharMap};
\draw[child has] (L) -- (F)
node[above right, at end] {0..*};
\draw[has] (F.190) -- (G)
node[above left, at start] {1}
node[above left, at end] {1};
\draw[has] (F) -- (S)
node[below right, at start] {1}
node[above right, at end] {0..*};
\draw[has] (F.-10) -- (C)
node[above right, at start] {1}
node[above right, at end] {0..*};
\begin{scope}[blue,
font=\scriptsize,
arrows={[scale=0.7]}]
\node[anchor=north west,
above=3cm of C] (L) {legend:};
\node[legend box,
below=0mm of L] (A1) {A};
\node[legend box,
right=0.5cm of A1,
label={right:\ means \textit{A has B}}] (B1) {B};
\draw[has] (A1) -- (B1);
\node[legend box,
below=1ex of A1] (A2) {A};
\node[legend box,
right=0.5cm of A2,
label={right:\ means \textit{a child of A has B}}] (B2) {B};
\draw[child has] (A2) -- (B2);
\end{scope}
\end{tikzpicture}
% Detailed object relationship.
\begin{tikzpicture}
\node[box] (F) {FT\_Face};
\node[box] (M) [above right=1cm and -1.5cm of F] {FT\_Module};
\node[box] (L) [above=1cm of M] {FT\_Library};
\node[box] (Mem) [left=1cm of L] {FT\_Memory};
\node[box] (Str) [left=1cm of F] {FT\_Stream};
\node[box] (G) [below left=1.3cm and -1cm of F]{FT\_GlyphSlot};
\node[box] (S) [below right=1cm and 0cm of F] {FT\_Size};
\node[box] (C) [above right=-0.5cm and 1.3cm of F]{FT\_CharMap};
\draw[has] (L) -- (Mem);
\draw[has] (L) -- (M)
node[above right, at end] {0..*};
\draw[has] (M) -- (F)
node[above left=0mm and -1mm, at end] {0..*};
\draw[has] (F) -- (Str);
\draw[has] (F.210) -- (G);
\draw[has] (F.-30) -- (S)
node[above right=0mm and -1mm, at end] {0..*};
\draw[has] (F.10) -- (C)
node[above left, at end] {0..*};
\begin{scope}[blue,
font=\scriptsize,
arrows={[scale=0.7]}]
\node[anchor=north west,
above=3cm of C] (L) {legend:};
\node[legend box,
below=0mm of L] (A1) {A};
\node[legend box,
right=0.5cm of A1,
label={right:\ means \textit{A has B}}] (B1) {B};
\draw[has] (A1) -- (B1);
\end{scope}
\end{tikzpicture}
\end{document}
|
