Interactive SVG

Question

I would like to be able to click inside a (white) box in an image like: and then jump to the description of that function. I tried:

\documentclass[twoside]{book}

\usepackage{float}
\usepackage{graphicx}
\usepackage[utf8]{inputenc}

\usepackage{ifpdf}
\ifpdf
  \usepackage[pdftex,pagebackref=true]{hyperref}
\else
  \usepackage[ps2pdf,pagebackref=true]{hyperref}
\fi
\hypersetup{%
  colorlinks=true,%
  linkcolor=blue,%
  citecolor=blue,%
  unicode%
}

\begin{document}

\hypersetup{pageanchor=false,
             bookmarksnumbered=true,
             pdfencoding=unicode
            }

\section{\texorpdfstring{fie1()}{fie1()}}

References \mbox{\hyperlink{aa_8h_af60813d22831048d88007bf793ba9df2}{fie2}} ().

Here is the call graph for this function:
\nopagebreak
\begin{figure}[H]
\begin{center}
\leavevmode
\includegraphics[width=180pt]{aa_8h_a321294a1af6610f2dc1563ebee9cdfbe_cgraph}
\end{center}
\end{figure}
\section{\texorpdfstring{fie2()}{fie2()}}

\end{document}

with the include image based on (the .dot file):

digraph "fie1"
{
 // INTERACTIVE_SVG=YES
  edge [fontname="Helvetica",fontsize="10",labelfontname="Helvetica",labelfontsize="10"];
  node [fontname="Helvetica",fontsize="10",shape=record];
  rankdir="LR";
  Node0 [label="fie1",height=0.2,width=0.4,color="black", fillcolor="grey75", style="filled", fontcolor="black"];
  Node0 -> Node1 [color="midnightblue",fontsize="10",style="solid"];
  Node1 [label="fie2",height=0.2,width=0.4,color="black", fillcolor="white", style="filled",URL="$aa_8h.html#af60813d22831048d88007bf793ba9df2"];
}

but this leads not to a clickable situation. I also tried with svg (after installing Inkscape):

\documentclass[twoside]{book}

\usepackage{float}
\usepackage{svg}
\usepackage[utf8]{inputenc}

\usepackage{ifpdf}
\ifpdf
  \usepackage[pdftex,pagebackref=true]{hyperref}
\else
  \usepackage[ps2pdf,pagebackref=true]{hyperref}
\fi
\hypersetup{%
  colorlinks=true,%
  linkcolor=blue,%
  citecolor=blue,%
  unicode%
}

\begin{document}

\hypersetup{pageanchor=false,
             bookmarksnumbered=true,
             pdfencoding=unicode
            }

\section{\texorpdfstring{fie1()}{fie1()}}

References \mbox{\hyperlink{aa_8h_af60813d22831048d88007bf793ba9df2}{fie2}} ().

Here is the call graph for this function:
\nopagebreak
\begin{figure}[H]
\begin{center}
\leavevmode
\includesvg{aa_8h_a321294a1af6610f2dc1563ebee9cdfbe_cgraph}
\end{center}
\end{figure}
\section{\texorpdfstring{fie2()}{fie2()}}

\end{document}

with the necessary SVG file being:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
 "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<!-- Generated by graphviz version 2.38.0 (20140413.2041)
 -->
<!-- Title: fie1 Pages: 1 -->
<svg width="108pt" height="28pt"
 viewBox="0.00 0.00 108.00 28.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 24)">
<title>fie1</title>
<polygon fill="white" stroke="none" points="-4,4 -4,-24 104,-24 104,4 -4,4"/>
<!-- Node0 -->
<g id="node1" class="node"><title>Node0</title>
<polygon fill="#bfbfbf" stroke="black" points="0,-0.5 0,-19.5 32,-19.5 32,-0.5 0,-0.5"/>
<text text-anchor="middle" x="16" y="-7.5" font-family="Helvetica,sans-Serif" font-size="10.00">fie1</text>
</g>
<!-- Node1 -->
<g id="node2" class="node"><title>Node1</title>
<g id="a_node2"><a xlink:href="aa_8h.html#af60813d22831048d88007bf793ba9df2" target="_top" xlink:title="fie2">
<polygon fill="white" stroke="black" points="68,-0.5 68,-19.5 100,-19.5 100,-0.5 68,-0.5"/>
<text text-anchor="middle" x="84" y="-7.5" font-family="Helvetica,sans-Serif" font-size="10.00">fie2</text>
</a>
</g>
</g>
<!-- Node0&#45;&gt;Node1 -->
<g id="edge1" class="edge"><title>Node0&#45;&gt;Node1</title>
<path fill="none" stroke="midnightblue" d="M32.3076,-10C39.8047,-10 49.0314,-10 57.5491,-10"/>
<polygon fill="midnightblue" stroke="midnightblue" points="57.7754,-13.5001 67.7754,-10 57.7754,-6.5001 57.7754,-13.5001"/>
</g>
</g>
</svg>

but unfortunately also without result.

There is a restriction that the image cannot be draw by hand as it is automatically generated and a document can have quite a few of these type of images that also change when the underlying code changes. It is, probably, possible to modify the generating code.

Any ideas?

Answer 1

This is possible with pdf layers named ocg (Optional Content Groups). These are layers of the pdf file that can be displayed or hidden by a simple mouse click. Not all pdf readers support them, I know that Adobe reader, Evince or Foxit reader manage these ocg layers.

There are several packages that allow to use them: ocg, ocg-p, ocgtools, ocgx and ocgx2.

The most complete manual and examples are the ocgx package available here: ocgx-manual A beautiful demo of ocgx package is here: demo-ocgx

I didn't quite understand your request and maybe I didn't do what you wanted.

In the following code, clicking on the rectangle fie2 changes the display of the rectangle fie1 and displays the word definition. It is of course possible to do it differently, to display or not the arrow, etc..

I used tikz to draw and display rectangles, but you can also hide and display something else like text or an image.

In the following code, node (a) is a rectangle that displays the default word fie1. Node (b) is a fie2 rectangle containing a link that makes visible the layer I called fie1 displaying the word definition.

\documentclass{article}
\usepackage[tikz]{ocgx2}

\begin{document}
\begin{tikzpicture}
\node (a) at (0,0) [draw,very thick,rounded corners=1pt,minimum height=1cm,minimum width=2cm] {fie1};   
\node (b) at (4,0) [draw,very thick,rounded corners=1pt,minimum height=1cm,minimum width=2cm,switch ocg=fie1] {fie2};   
\path[->](a) edge [very thick,blue](b);

\begin{scope}[ocg={name=fie1,ref=fie1,status=invisible}]
\node (a) at (0,0) [draw,very thick,rounded corners=1pt,minimum height=1cm,minimum width=2cm,fill=white] {definition};
\end{scope}
\end{tikzpicture}

\end{document}

On the image below, the ocg layer fie1 is inactive and the message displayed is the default fie1.

On the image below, the ocg layer fie1 has been activated by clicking fie2 and now displays the word definition.

If I didn't understand your request correctly, say so.

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