Inaki
cf4e7548a8
It seems some TeX installs use a convert utility that renders poor quality images when using the GIF format, but render good ones when using PNG. If all the needed tools are available, let the admin choose the preferred output format. Merged from MOODLE_19_STABLE
51 lines
2.6 KiB
PHP
51 lines
2.6 KiB
PHP
<?php
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require_once($CFG->dirroot.'/filter/tex/lib.php');
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$items = array();
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$items[] = new admin_setting_heading('filter_tex_latexheading', get_string('latexsettings', 'admin'), '');
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$items[] = new admin_setting_configtextarea('filter_tex_latexpreamble', get_string('latexpreamble','admin'),
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'', "\\usepackage[latin1]{inputenc}\n\\usepackage{amsmath}\n\\usepackage{amsfonts}\n\\RequirePackage{amsmath,amssymb,latexsym}\n");
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$items[] = new admin_setting_configtext('filter_tex_latexbackground', get_string('backgroundcolour', 'admin'), '', '#FFFFFF');
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$items[] = new admin_setting_configtext('filter_tex_density', get_string('density', 'admin'), '', '120', PARAM_INT);
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if (PHP_OS=='Linux') {
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$default_filter_tex_pathlatex = "/usr/bin/latex";
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$default_filter_tex_pathdvips = "/usr/bin/dvips";
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$default_filter_tex_pathconvert = "/usr/bin/convert";
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} else if (PHP_OS=='Darwin') {
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// most likely needs a fink install (fink.sf.net)
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$default_filter_tex_pathlatex = "/sw/bin/latex";
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$default_filter_tex_pathdvips = "/sw/bin/dvips";
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$default_filter_tex_pathconvert = "/sw/bin/convert";
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} else if (PHP_OS=='WINNT' or PHP_OS=='WIN32' or PHP_OS=='Windows') {
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// note: you need Ghostscript installed (standard), miktex (standard)
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// and ImageMagick (install at c:\ImageMagick)
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$default_filter_tex_pathlatex = "\"c:\\texmf\\miktex\\bin\\latex.exe\" ";
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$default_filter_tex_pathdvips = "\"c:\\texmf\\miktex\\bin\\dvips.exe\" ";
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$default_filter_tex_pathconvert = "\"c:\\imagemagick\\convert.exe\" ";
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} else {
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$default_filter_tex_pathlatex = '';
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$default_filter_tex_pathdvips = '';
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$default_filter_tex_pathconvert = '';
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}
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$items[] = new admin_setting_configexecutable('filter_tex_pathlatex', get_string('pathlatex', 'admin'), '', $default_filter_tex_pathlatex);
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$items[] = new admin_setting_configexecutable('filter_tex_pathdvips', get_string('pathdvips', 'admin'), '', $default_filter_tex_pathdvips);
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$items[] = new admin_setting_configexecutable('filter_tex_pathconvert', get_string('pathconvert', 'admin'), '', $default_filter_tex_pathconvert);
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// Even if we offer GIF and PNG formats here, in the update callback we check whether
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// all the paths actually point to executables. If they don't, we force the setting
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// to GIF, as that's the only format mimeTeX can produce.
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$formats = array('gif' => 'GIF', 'png' => 'PNG');
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$items[] = new admin_setting_configselect('filter_tex_convertformat', get_string('convertformat', 'admin'), get_string('configconvertformat', 'admin'), 'gif', $formats);
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foreach ($items as $item) {
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$item->set_updatedcallback('filter_tex_updatedcallback');
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$settings->add($item);
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}
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