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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/122673/">https://git.reviewboard.kde.org/r/122673/</a>
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<p style="margin-top: 0;">On March 4th, 2015, 2:10 p.m. UTC, <b>David Edmundson</b> wrote:</p>
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<a href="https://git.reviewboard.kde.org/r/122673/diff/2/?file=352927#file352927line762" style="color: black; font-weight: bold; text-decoration: underline;">src/plasma/svg.cpp</a>
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(Diff revision 2)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">Plasma::Theme::ColorGroup Svg::colorGroup() const</pre></td>
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<th bgcolor="#e9eaa8" style="border-right: 1px solid #C0C0C0;" align="right"><font size="2">739</font></th>
<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">d</span><span class="o">-></span><span class="n">findInCache</span><span class="p">(</span><span class="n">elementID</span><span class="p">,</span> <span class="n">size</span><span class="p">());</span></pre></td>
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<td bgcolor="#fdfebc" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">d</span><span class="o">-></span><span class="n">findInCache</span><span class="p">(</span><span class="n">elementID</span><span class="p">,</span> <span class="n">size</span><span class="p">()</span><span class="hl"> </span><span class="o"><span class="hl">*</span></span><span class="hl"> </span><span class="n"><span class="hl">d</span></span><span class="o"><span class="hl">-></span></span><span class="n"><span class="hl">devicePixelRatio</span></span><span class="p">);</span></pre></td>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">Returning pixmaps with a doubled size with no devicePixelRatio set is going to screw up the client in a QPainter based app.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">We want some sort
same for ::image()</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">for the paint() it doesn't matter as we're doing the painting ourselves and ready explicitly say our sourceRect is larger than the targetRect which is accompilishing the same thing</p></pre>
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<p>On March 4th, 2015, 2:27 p.m. UTC, <b>Marco Martin</b> wrote:</p>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">if the client does svg->setDevicePixelRatio(2)
then painter.drawPixmap(svg->pixmap()) with the painter with a different deviepixelratio than the one he just put on the svg it's his problem no?</p></pre>
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<pre style="margin-left: 1em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">No.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">If I have:</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">QPixmap myTarget(40,40)
myTarget.setDevicePixelRatio(2); //so geometry size is 20x20</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">QPainter p(&myTarget);
p.drawPixmap(QPoint(0,0), someSvg.pixmap(20,20)); /// we would expect this to draw all 40x40 pixels neatly </p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">however QPainter will be smart and detect that the source and target sources have different DPRs, so it will double the scale of the target pixmap.
and will paint 80x80 pixels into that 40x40 space; so you'll only see quarter of the picture.</p></pre>
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<p>- David</p>
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<p>On March 5th, 2015, 10:27 a.m. UTC, Marco Martin wrote:</p>
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<div>Review request for Plasma.</div>
<div>By Marco Martin.</div>
<p style="color: grey;"><i>Updated March 5, 2015, 10:27 a.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
plasma-framework
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;"><p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">(still in progress but here for feedback)
when QT_DEVICE_PIXELRATIO is something different from 1, the pixmaps generated by Svg will be scaled up to give a proper texture.</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">This is complementary but not replacing our current approach:
the pixelratio that can be accessed by units is now in relation to the qt pixel ratio, spacings are also adjusted accordingly (therefore, spaces and sizes won't need an integer value like pixelratio)</p>
<p style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: inherit;">svg introduces also a scaleFactor property (that is pretty much like its old pixelRatio)
basically, scalefactor, will scale both the textures <em style="padding: 0;text-rendering: inherit;margin: 0;line-height: inherit;white-space: normal;">and</em> all the reported sizes, (old method) pixelratio just scales textures without altering measures (like qt pixelratio likes)
they are now both used and combined, so a) we can have this working before supporting officially qt pixelratio when will be good enough but b) keeping the old mwthod working for the time being c) by using both at the sae time we can at least scale sizes of values != from integers, for screens that are too dense for 1 and not enough for 2</p></pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>src/declarativeimports/core/iconitem.cpp <span style="color: grey">(03f40c4)</span></li>
<li>src/declarativeimports/core/svgitem.cpp <span style="color: grey">(570c1c3)</span></li>
<li>src/declarativeimports/core/units.h <span style="color: grey">(6c038ba)</span></li>
<li>src/declarativeimports/core/units.cpp <span style="color: grey">(a740145)</span></li>
<li>src/plasma/framesvg.cpp <span style="color: grey">(1bb3510)</span></li>
<li>src/plasma/private/svg_p.h <span style="color: grey">(a31d0ac)</span></li>
<li>src/plasma/svg.h <span style="color: grey">(0bcbd7a)</span></li>
<li>src/plasma/svg.cpp <span style="color: grey">(0a0db5e)</span></li>
<li>src/declarativeimports/core/framesvgitem.cpp <span style="color: grey">(dae8a4f)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/122673/diff/" style="margin-left: 3em;">View Diff</a></p>
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