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authorJoey Hess <joey@kodama.kitenet.net>2008-08-24 15:21:51 -0400
committerJoey Hess <joey@kodama.kitenet.net>2008-08-24 15:21:51 -0400
commit69e35d3c515cd30c9baf82468008d0b0643e1e1f (patch)
tree5f13ced20178a88ee8d4ed7067204f7f298ac70c /IkiWiki/Plugin
parent7f5413b0c07a3523fb459a26df8c9c0fdd210f9e (diff)
willu's teximg changes
* teximg: The prefix is configurable, and has changed to not include the nonstandard mhchem by default. (willu) * teximg: dvipng is used if available to render images. Its output is antialiased and better than dvips. If not available, the old dvips+convert chain will be used. (willu) * Drop suggests on texlive-science, add suggests on dvipng.
Diffstat (limited to 'IkiWiki/Plugin')
-rw-r--r--IkiWiki/Plugin/teximg.pm62
1 files changed, 51 insertions, 11 deletions
diff --git a/IkiWiki/Plugin/teximg.pm b/IkiWiki/Plugin/teximg.pm
index 369c10882..661d97b1f 100644
--- a/IkiWiki/Plugin/teximg.pm
+++ b/IkiWiki/Plugin/teximg.pm
@@ -10,6 +10,17 @@ use File::Temp qw(tempdir);
use HTML::Entities;
use IkiWiki 2.00;
+my $default_prefix = <<EOPREFIX;
+\\documentclass{article}
+\\usepackage{amsmath}
+\\usepackage{amsfonts}
+\\usepackage{amssymb}
+\\pagestyle{empty}
+\\begin{document}
+EOPREFIX
+
+my $default_postfix = '\\end{document}';
+
sub import { #{{{
hook(type => "getsetup", id => "teximg", call => \&getsetup);
hook(type => "preprocess", id => "teximg", call => \&preprocess);
@@ -21,6 +32,26 @@ sub getsetup () { #{{{
safe => 1,
rebuild => undef,
},
+ teximg_dvipng => {
+ type => "boolean",
+ description => "Should teximg use dvipng to render, or dvips and convert?",
+ safe => 0,
+ rebuild => undef,
+ },
+ teximg_prefix => {
+ type => "string",
+ example => $default_prefix,
+ description => "LaTeX prefix for teximg plugin",
+ safe => 0, # Not sure how secure LaTeX is...
+ rebuild => 1,
+ },
+ teximg_postfix => {
+ type => "string",
+ example => $default_postfix,
+ description => "LaTeX postfix for teximg plugin",
+ safe => 0, # Not sure how secure LaTeX is...
+ rebuild => 1,
+ },
} #}}}
sub preprocess (@) { #{{{
@@ -105,25 +136,34 @@ sub gen_image ($$$$) { #{{{
my $digest = shift;
my $imagedir = shift;
- #TODO This should move into the setup file.
- my $tex = '\documentclass['.$height.'pt]{scrartcl}';
- $tex .= '\usepackage[version=3]{mhchem}';
- $tex .= '\usepackage{amsmath}';
- $tex .= '\usepackage{amsfonts}';
- $tex .= '\usepackage{amssymb}';
- $tex .= '\pagestyle{empty}';
- $tex .= '\begin{document}';
+ if (!defined $config{teximg_prefix}) {
+ $config{teximg_prefix} = $default_prefix;
+ }
+ if (!defined $config{teximg_postfix}) {
+ $config{teximg_postfix} = $default_postfix;
+ }
+ if (!defined $config{teximg_dvipng}) {
+ $config{teximg_dvipng} = length `which dvipng 2>/dev/null`;
+ }
+
+ my $tex = $config{teximg_prefix};
$tex .= '$$'.$code.'$$';
- $tex .= '\end{document}';
+ $tex .= $config{teximg_postfix};
+ $tex =~ s!\\documentclass{article}!\\documentclass[${height}pt]{article}!g;
+ $tex =~ s!\\documentclass{scrartcl}!\\documentclass[${height}pt]{scrartcl}!g;
my $tmp = eval { create_tmp_dir($digest) };
if (! $@ &&
writefile("$digest.tex", $tmp, $tex) &&
system("cd $tmp; latex --interaction=nonstopmode $tmp/$digest.tex > /dev/null") == 0 &&
- system("dvips -E $tmp/$digest.dvi -o $tmp/$digest.ps 2> $tmp/$digest.log") == 0 &&
# ensure destination directory exists
writefile("$imagedir/$digest.png", $config{destdir}, "") &&
- system("convert -density 120 -trim -transparent \"#FFFFFF\" $tmp/$digest.ps $config{destdir}/$imagedir/$digest.png > $tmp/$digest.log") == 0) {
+ (($config{teximg_dvipng} &&
+ system("dvipng -D 120 -bg Transparent -T tight -o $config{destdir}/$imagedir/$digest.png $tmp/$digest.dvi > $tmp/$digest.log") == 0
+ ) || (!$config{teximg_dvipng} &&
+ system("dvips -E $tmp/$digest.dvi -o $tmp/$digest.ps 2> $tmp/$digest.log") == 0 &&
+ system("convert -density 120 -trim -transparent \"#FFFFFF\" $tmp/$digest.ps $config{destdir}/$imagedir/$digest.png > $tmp/$digest.log") == 0
+ ))) {
return 1;
}
else {