tex4ebook: .svg images are correctly resized with includegraphics but not with includesvg
TeX - LaTeX Asked by avren on February 13, 2021
I’m generating an .epub with tex4ebook. Most of the graphics I want to include are svg. If I include them with includesvg, and specify the graphics path with svgpath, I can compile the document with pdflatex without any issues. When I tried to compile with tex4ebook, tex4ht couldn’t find the .svg files. When I changed svgpath to graphicspath, tex4ht was able to include the graphics, but the svgs were not resized according to the dimensions given to includesvg.
I tried this workaround, but the images were still not resized correctly:
ifdefinedHCode
graphicspath{{./images}}
renewcommandincludesvg[2][]{includegraphics{#2}}
else
svgpath{{./images}}
fi
Then I replaced includesvg with includegraphics, and the svg was included with the correct dimensions. The dimensions for the svgs were correct even though only one dimension was provided in many cases, and there was no .xbb file.
The recommendations that I’ve found suggest generating an .xbb file (after converting svg to jpg, pdf, or png) to give tex4ht the dimensions for the graphic, but the fact that this isn’t necessary for includegraphics suggests that I could tell tex4ht how to get the dimensions from includesvg in a .cfg file. If someone could suggest how I could do that, I would really appreciate it.
Below I’ve included an mwe demonstrating how tex4ebook handles svgs provided with includesvg and includegraphics.
Here’s a screenshot of the .epub:
mwe.tex
documentclass{book}
usepackage[utf8]{inputenc}
usepackage{graphicx}
usepackage{svg}
graphicspath{{./images}}
begin{document}
begin{figure}[ht]
centering
caption{Image generated with includegraphics}
label{fig:frogone}
includegraphics[width=0.50textwidth]{images/simplefrog.svg}
end{figure}
begin{figure}[ht]
centering
caption{Image generated with includesvg}
label{fig:frogtwo}
includesvg[width=0.50textwidth]{images/simplefrog.svg}
end{figure}
end{document}
mwe.cfg
Preamble{xhtml}
ConfigureEnv{figure}
{ifvmodeIgnoreParfiEndPHCode{<div class="figure">}%
bgroup Configure{float}{ShowPar}{}{}%
}
{egroup
ifvmodeIgnoreParfiEndPHCode{</div>}ShowPar
par}
{}{}
Css{div.caption {text-align:center;font-size:83%;text-indent:0em; margin-left:2em; margin-right:2em; }}
Css{div.figure{text-align:center;clear:both;overflow:auto;width:100%;margin-bottom:1em;}}
makeatletter
DeclareGraphicsExtensions{.svg}
ExplSyntaxOn
Configure{Gin-dim}
{style="width:fp_eval:n{round(Gin@req@width/textwidth*100,2)}%;max-height:fp_eval:n{round(Gin@req@height/textwidth*100,2)}%;"}
ExplSyntaxOff
makeatother
begin{document}
EndPreamble`
mwe.html
<?xml version='1.0' encoding='utf-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html xmlns='http://www.w3.org/1999/xhtml'>
<head>
<title></title>
<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />
<meta content='TeX4ht (https://tug.org/tex4ht/)' name='generator' />
<meta content='TeX4ht (https://tug.org/tex4ht/)' name='originator' />
<!-- charset=utf-8,epub,uni-html4,html,xhtml -->
<meta content='mwe.tex' name='src' />
<link href='mwe.css' type='text/css' rel='stylesheet' />
</head><body>
<div class='figure'>
<a id='x1-21'></a>
<br /> <div class='caption'><span class='id'>Figure 1: </span><span class='content'>Image generated with includegraphics</span></div><!-- tex4ht:label?: x1-21 -->
<img style='width:50%;max-height:50%;' src='./images/simplefrog.svg' alt='PIC' />
</div>
<div class='figure'>
<a id='x1-32'></a>
<br /> <div class='caption'><span class='id'>Figure 2: </span><span class='content'>Image generated with includesvg</span></div><!-- tex4ht:label?: x1-32 -->
<img style='width:20.95%;max-height:20.95%;' src='./images/simplefrog.svg' alt='PIC' />
</div>
</body></html>
The log file is very long, so I decided to only include the parts that I thought were relevant for graphics processing.
(/usr/share/texmf-dist/tex/latex/graphics/graphicx.sty
Package: graphicx 2020/09/09 v1.2b Enhanced LaTeX Graphics (DPC,SPQR)
(/usr/share/texmf-dist/tex/generic/tex4ht/graphics-hooks.4ht
version 2020-10-17-13:53
) (/usr/share/texmf-dist/tex/latex/graphics/graphics.sty
Package: graphics 2020/08/30 v1.4c Standard LaTeX Graphics (DPC,SPQR)
(/usr/share/texmf-dist/tex/latex/graphics/trig.sty
Package: trig 2016/01/03 v1.10 sin cos tan (DPC)
) (/usr/share/texmf-dist/tex/latex/graphics-cfg/graphics.cfg
File: graphics.cfg 2016/06/04 v1.11 sample graphics configuration
)
Package graphics Info: Driver file: dvips.def on input line 105.
(/usr/share/texmf-dist/tex/latex/graphics-def/dvips.def
File: dvips.def 2017/06/20 v3.1d Graphics/color driver for dvips
))
Gin@req@height=dimen139
Gin@req@width=dimen140
)) (/usr/share/texmf-dist/tex/latex/base/inputenc.sty
Package: inputenc 2020/08/01 v1.3d Input encoding file
inpenc@prehook=toks17
inpenc@posthook=toks18
) (/usr/share/texmf-dist/tex/latex/svg/svg.sty
Package: svg 2020/11/26 v2.02k (include SVG pictures)
) (/usr/share/texmf-dist/tex/latex/pgf/systemlayer/pgfsys.sty (/usr/share/texmf
-dist/tex/latex/pgf/utilities/pgfrcs.sty (/usr/share/texmf-dist/tex/generic/pgf
/utilities/pgfutil-common.tex
pgfutil@everybye=toks19
pgfutil@tempdima=dimen141
pgfutil@tempdimb=dimen142
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common-lists.tex)) (/u
sr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-latex.def
pgfutil@abb=box48
) (/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfrcs.code.tex (/usr/share/
texmf-dist/tex/generic/pgf/pgf.revision.tex)
Package: pgfrcs 2020/12/01 v3.1.7a (3.1.7a)
)) (/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgfsys.code.tex
Package: pgfsys 2020/12/01 v3.1.7a (3.1.7a)
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfkeys.code.tex
pgfkeys@pathtoks=toks20
pgfkeys@temptoks=toks21
(/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfkeysfiltered.code.tex
pgfkeys@tmptoks=toks22
))
pgf@x=dimen143
pgf@y=dimen144
pgf@xa=dimen145
pgf@ya=dimen146
pgf@xb=dimen147
pgf@yb=dimen148
pgf@xc=dimen149
pgf@yc=dimen150
pgf@xd=dimen151
pgf@yd=dimen152
w@pgf@writea=write3
r@pgf@reada=read2
c@pgf@counta=count189
c@pgf@countb=count190
c@pgf@countc=count191
c@pgf@countd=count192
t@pgf@toka=toks23
t@pgf@tokb=toks24
t@pgf@tokc=toks25
pgf@sys@id@count=count193
(/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgf.cfg
File: pgf.cfg 2020/12/01 v3.1.7a (3.1.7a)
)
Driver file for pgf: pgfsys-tex4ht.def
(/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgfsys-tex4ht.def
File: pgfsys-tex4ht.def 2020/12/01 v3.1.7a (3.1.7a)
(/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgfsys-common-svg.def
File: pgfsys-common-svg.def 2020/12/01 v3.1.7a (3.1.7a)
pgf@sys@svg@objectcount=count194
pgf@sys@svg@scopecount=count195
pgf@sys@svg@type@count=count196
pgf@sys@svg@canvascount=count197
)
pgf@sys@svg@picnum=count198
pgf@sys@svg@nodenum=count199
pgfsys@foreignobject@Box=box49
pgf@s=dimen153
pgf@t=dimen154
(/usr/share/texmf-dist/tex/generic/tex4ht/xcolor-hooks.4ht
version 2020-10-17-13:53
))) (/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgfsyssoftpath.code.tex
File: pgfsyssoftpath.code.tex 2020/12/01 v3.1.7a (3.1.7a)
pgfsyssoftpath@smallbuffer@items=count266
pgfsyssoftpath@bigbuffer@items=count267
) (/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgfsysprotocol.code.tex
File: pgfsysprotocol.code.tex 2020/12/01 v3.1.7a (3.1.7a)
)) (./mwe.cfg (/usr/share/texmf-dist/tex/generic/tex4ht/tex4ht.4ht
version 2020-03-12-14:03
l.13 --- TeX4ht warning --- File `"./images/simplefrog.xbb"' not found ---
l.13 --- TeX4ht warning --- Cannot determine size of graphic in "./images/simpl
efrog.xbb" (no BoundingBox) ---
l. 13 --- needs --- ./images/simplefrog.svg ---
[3
] [4
] [5
]
l.20 --- TeX4ht warning --- File `"./images/simplefrog.xbb"' not found ---
l.20 --- TeX4ht warning --- Cannot determine size of graphic in "./images/simpl
efrog.xbb" (no BoundingBox) ---
l. 20 --- needs --- ./images/simplefrog.svg ---
Since the bounding box is not available, I changed Configure{Gin-dim} to Configure{Gin-dim+}, and I got this error when I tried to compile:
[ERROR] htlatex: ./mwe.cfg 19 LaTeX Error: Missing begin{document} in `mwe.cfg'.
One Answer
The problem is that the current version of TeX4ht configuration file for svg.sty doesn't pass dimension parameters to includegraphics, so images are displayed at their original size.
Here is a better version, which constructs correct dimensions for includegraphics and it also support svgpath. Save this code as svg.4ht:
% svg.4ht (2018-12-30-09:31), generated from tex4ht-4ht.tex
% Copyright 2018 TeX Users Group
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either
% version 1.3c of this license or (at your option) any
% later version. The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3c or later is part of all distributions
% of LaTeX version 2005/12/01 or later.
%
% This work has the LPPL maintenance status "maintained".
%
% The Current Maintainer of this work
% is the TeX4ht Project <http://tug.org/tex4ht>.
%
% If you modify this program, changing the
% version identification would be appreciated.
immediatewrite-1{version 2018-12-30-09:31}
renewcommandincludesvg[2][]{%
% get file name with svgpath support
svg@get@path{#2}{}%
% set keys
svg@local@param@set{#1}%
if@svg@file@found%
% convert supported parameters from includesvg for use with includegraphics
edefsvg@tempb{}
ifdimsvg@param@height>z@relax%
edefsvg@tempb{svg@tempb,height=svg@param@height}%
fi%
ifdimsvg@param@width>z@relax%
edefsvg@tempb{svg@tempb,width=svg@param@width}%
fi%
ifdimdimexprsvg@param@anglep@relax=z@relaxelse%
edefsvg@tempb{%
svg@tempb,origin=svg@param@origin,angle=svg@param@angle%
}%
fi%
expandafterincludegraphicsexpandafter[svg@tempb]{svg@[email protected]@file@ext}
else
typeout{SVG file #1 cannot be found}
fi
}
Hinput{svg}
endinput
It redefines the includesvg command. It gets the SVG filename thanks to svg@get@path. Most of the code constructs dimensions for includegraphics using code that comes from svg.sty. Only width, height and angle parameters are supported. TeX4ht version of includegraphics supports direct inclusion of SVG files, so nothing more is needed.
Here is a modified example:
documentclass{book}
usepackage[utf8]{inputenc}
usepackage{graphicx}
usepackage{svg}
graphicspath{{./images}}
svgpath{{./images}}
begin{document}
begin{figure}[ht]
centering
caption{Image generated with includegraphics}
label{fig:frogone}
includegraphics[width=0.50textwidth]{simplefrog.svg}
end{figure}
begin{figure}[ht]
centering
caption{Image generated with includesvg}
label{fig:frogtwo}
includesvg[width=0.50textwidth]{simplefrog.svg}
end{figure}
end{document}
And this is the rendered HTML file:
Correct answer by michal.h21 on February 13, 2021
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