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<base href="https://bugs.documentfoundation.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - [ODF] Improve the kind embedded fonts are addressed in the file"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=114140">114140</a>
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<th>Summary</th>
<td>[ODF] Improve the kind embedded fonts are addressed in the file
</td>
</tr>
<tr>
<th>Product</th>
<td>LibreOffice
</td>
</tr>
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<th>Version</th>
<td>5.4.3.2 release
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>LibreOffice
</td>
</tr>
<tr>
<th>Assignee</th>
<td>libreoffice-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>rb.henschel@t-online.de
</td>
</tr></table>
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<pre>Created <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=138068" name="attach_138068" title="File generated by LibreOffice with embedded fonts">attachment 138068</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=138068&action=edit" title="File generated by LibreOffice with embedded fonts">[details]</a></span>
File generated by LibreOffice with embedded fonts
For describing and embedding this structure is used e.g. (see attached file)
<office:font-face-decls>
<style:font-face style:name="Cambria" svg:font-family="Cambria"
style:font-family-generic="roman">
<svg:font-face-src>
<svg:font-face-uri xlink:href="Fonts/font3.ttf" xlink:type="simple">
<svg:font-face-format svg:string="truetype"/>
</svg:font-face-uri>
<svg:font-face-uri xlink:href="Fonts/font4.ttf" xlink:type="simple">
<svg:font-face-format svg:string="truetype"/>
</svg:font-face-uri>
<svg:font-face-uri xlink:href="Fonts/font5.ttf" xlink:type="simple">
<svg:font-face-format svg:string="truetype"/>
</svg:font-face-uri>
<svg:font-face-uri xlink:href="Fonts/font6.ttf" xlink:type="simple">
<svg:font-face-format svg:string="truetype"/>
</svg:font-face-uri>
</svg:font-face-src>
</style:font-face>
</office:font-face-decls>
The files font3.ttf to font6.ttf contain the different font faces regular,
bold, italic and bold-italic.
The ODF schema allows several <svg:font-face-uri> child elements for a
<svg:font-face-src> element. The purpose of that feature is, that you can
include different formats of the same font, e.g. "truetype" or "opentype" or
"type-1". The format itself is then given in the <svg:font-face-format>
element.
This feature is miss-used here to include different fonts into one
<svg:font-face-src> element.
Problems with that:
The font descriptor attributes of the <style:font-face> element would allow a
very detailed description of the font, but that is here not possible, because
different fonts are in included. Consumers will not directly know, which font
is to be used for e.g. italic.
At the time the file is written LibreOffice knows the font characteristics. But
it does not save this information. So when opening the file, LibreOffice has to
do again a detection in the font files themselves to recreate this information.
That is avoidable effort.
Solution is to use for each font file its own <style:font-face> declaration.</pre>
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