rename tex to teximg

5 files changed, 39 insertions, 34 deletions

diff --git a/IkiWiki/Plugin/tex.pm b/IkiWiki/Plugin/teximg.pm
index 7a95697b9..1993249eb 100644
--- a/IkiWiki/Plugin/tex.pm
+++ b/IkiWiki/Plugin/teximg.pm
@@ -2,7 +2,7 @@
 # Licensed under GPL v2 or greater
 # (c) 2007 Patrick Winnertz <patrick.winnertz@skolelinux.org>
 
-package IkiWiki::Plugin::tex;
+package IkiWiki::Plugin::teximg;
 use warnings;
 use strict;
 use Digest::MD5 qw(md5_hex);
@@ -11,7 +11,7 @@ use URI::Escape qw(uri_escape);
 use IkiWiki 2.00;
 
 sub import { #{{{
-	hook(type => "preprocess", id => "tex", call => \&preprocess);
+	hook(type => "preprocess", id => "teximg", call => \&preprocess);
 } #}}}
 
 sub preprocess (@) { #{{{
@@ -27,14 +27,14 @@ sub preprocess (@) { #{{{
 	
 	my $code = $params{code};
 	if (! defined $code && ! length $code) {
-		return "[[tex ".gettext("missing tex code"). "]]";
+		return "[[teximg ".gettext("missing tex code"). "]]";
 	}
 
 	if (check($code)) {
 		return create($code, check_height($height), \%params);
 	}
 	else {
-		return "[[tex ".gettext("code includes disallowed latex commands"). "]]";
+		return "[[teximg ".gettext("code includes disallowed latex commands"). "]]";
 	}
 } #}}}
 
@@ -70,7 +70,7 @@ sub create ($$$) { #{{{
 
 	my $digest = md5_hex($code, $height);
 
-	my $teximgdir = "/teximages";
+	my $teximgdir = "/teximag";
 	my $imglink = "$teximgdir/$digest.png";
 	my $imglog = "$teximgdir/$digest.log";
 	will_render($params->{destpage}, $imglink);
@@ -89,10 +89,12 @@ sub create ($$$) { #{{{
 	
 	if (-e "$config{destdir}/$imglink" ||
 	    gen_image($code, $height, $digest, $teximgdir)) {
-		return qq{<img src="$imgurl" alt="}.uri_escape($code).qq{" class="teximage" />};
+		return qq{<img src="$imgurl" alt="}
+			.(exists $params{alt} ? $params{alt} : uri_escape($code))
+			.qq{" class="teximg" />};
 	}
 	else {
-		return qq{[[tex <a href="$logurl">}.gettext("failed to generate image from code")."</a>]]";
+		return qq{[[teximg <a href="$logurl">}.gettext("failed to generate image from code")."</a>]]";
 	}
 } #}}}
 
diff --git a/debian/changelog b/debian/changelog
index b057e7c56..1ff492a48 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -46,7 +46,7 @@ ikiwiki (2.6) UNRELEASED; urgency=low
   * Add proper Homepage field to Debian package (needs uber-new dpkg).
   * Add monotone support, contributed by William Uther.
   * Avoid ugly gettext messages if LANG is empty. Closes: #439035
-  * Added tex plugin to generate images from latex code.
+  * Added teximg plugin to generate images from latex code.
     Contributed by Patrick Winnertz as a GSoC project.
   * Call the formbuilder hook for the edit page.
   * Call decode_form_utf8 before running formbuilder_setup hooks.
diff --git a/doc/plugins/tex.mdwn b/doc/plugins/tex.mdwn
deleted file mode 100644
index 52f90f6ab..000000000
--- a/doc/plugins/tex.mdwn
+++ /dev/null
@@ -1,25 +0,0 @@
-[[template id=plugin name=tex author="[[PatrickWinnertz]]"]]
-[[tag type/chrome type/slow]]
-
-This plugin renders LaTeX formulas into images, which are rendered automatically when you save this site. 
-
-Scaling of this images is of course also possible, possible heights are:
-
-  8,9,10,11,12,14,17,20
-
-But is also work if you pic e.g. another height. The best fitting height is then used to generate the image.
-
-#Here are some examples how to use this plugin:
-
-        [[tex code="\ce{[Cu(NH3)3]^{2+}}"]]
-        [[tex code="\frac{1}{2}"]]
-        [[tex code="E = - \frac{Z^2 \cdot  \mu \cdot e^4}{32\pi^2 \epsilon_0^2 \hbar^2 n^2}" ]]
-
-in order to scale this images use height=x:
-
-        [[tex code="\ce{[Cu(NH3)3]^{2+}}" height="17"]]
-        [[tex code="\ce{[Cu(NH3)3]^{2+}}" height="8"]]
-
-If no height is choosen the default height 12 is used.
-
-See [this site](http://www.der-winnie.de/opensource/gsoc2007) for rendered images.
\ No newline at end of file
diff --git a/doc/plugins/teximg.mdwn b/doc/plugins/teximg.mdwn
new file mode 100644
index 000000000..5c35aa2e8
--- /dev/null
+++ b/doc/plugins/teximg.mdwn
@@ -0,0 +1,25 @@
+[[template id=plugin name=teximg author="[[PatrickWinnertz]]"]]
+[[tag type/chrome type/slow]]
+
+This plugin renders LaTeX formulas into images.
+
+## examples
+
+	\[[teximg code="\ce{[Cu(NH3)3]^{2+}}"]]
+	\[[teximg code="\frac{1}{2}"]]
+	\[[teximg code="E = - \frac{Z^2 \cdot  \mu \cdot e^4}{32\pi^2 \epsilon_0^2 \hbar^2 n^2}" ]]
+
+To scale the image, use height=x:
+
+	\[[teximg code="\ce{[Cu(NH3)3]^{2+}}" height="17"]]
+	\[[teximg code="\ce{[Cu(NH3)3]^{2+}}" height="8"]]
+
+If no height is choosen the default height 12 is used. Valid heights are: 8, 9,
+10, 11, 12, 14, 17, 20. If another height is entered, the closest available
+height is used.
+
+To add an alt text to the image, use alt="text":
+
+	\[[teximg code="\frac{1}{2}" alt="1/2"]]
+
+See [this site](http://www.der-winnie.de/opensource/gsoc2007) for rendered images.
diff --git a/doc/todo/latex.mdwn b/doc/todo/latex.mdwn
index cedf7cbd5..8822bd30b 100644
--- a/doc/todo/latex.mdwn
+++ b/doc/todo/latex.mdwn
@@ -167,13 +167,16 @@ Okay, the last version of the tex plugin for ikiwiki can be downloaded [here](ht
 > fixed a bug (the first time it was run, it tried to write the png file
 > before the teximages/ directory existed) and checked the result in.
 > 
-> Can you please flesh out [[plugins/tex]] with
+> Can you please flesh out [[plugins/teximg]] with
 > whatever documentation people who know tex will expect to see?
 
 Okay, I'll fill this up today I think with information about the plugin
 
 Done. Is that docu fine with you?
 
+>> Perhaps add some documentation about the kind of tex code that can be
+>> used, or a link to some documentation so people who don't know latex
+>> well can figure this out?
 
 > Also, please review my changes. In particular, I changed the @badthings
 > array to use qr//, which is much clearer, but it needs to be tested that