<html>
<head>
<base href="https://bugs.documentfoundation.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_UNCONFIRMED "
title="UNCONFIRMED - Use better scaling quality for PNG icons"
href="https://bugs.documentfoundation.org/show_bug.cgi?id=121082">121082</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Use better scaling quality for PNG icons
</td>
</tr>
<tr>
<th>Product</th>
<td>LibreOffice
</td>
</tr>
<tr>
<th>Version</th>
<td>5.3 all versions
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>UNCONFIRMED
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>graphics stack
</td>
</tr>
<tr>
<th>Assignee</th>
<td>libreoffice-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>glogow@fbihome.de
</td>
</tr></table>
<p>
<div>
<pre>Currently we scale using the fast algorithm:
vcl/source/image/ImplImageTree.cxx:187:
rParameters.mrBitmap.Scale(aScaleFactor, aScaleFactor, BmpScaleFlag::Fast);
After fixing <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - Icons are corrupted on Windows when scaling UI 150% and higher, with some OpenGL dependency"
href="show_bug.cgi?id=119020">bug 119020</a> people thought about improving the quality of the
scaled icons.
The fix itself is rather easy: change ::Fast to ::Default or ::BestQuality.
For OpenGL it will even be done via shaders in HW.
Now I know this is almost a bikeshedding bugreport, but still, the icons are
cached, so it would just slow down the first start.
Maybe TDF will have a tender for my proposal: "[...] implement scaling as a
completely asynchronous background job, which can dynamically update any images
(which would also be cool to have for document open times with many images of
any kind, which need scaling for zoom level, also PDF or SVG)."
OTOH we also want to deliver the SVG icon sets, currently independent from the
PNG versions.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>