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Do not resize SVG icons

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An icon which is loaded from SVG file can be rendered in any size and
resolutions natively. We were generating 16x16, 24x24, and 32x32
pixmaps, and not appending but creating new icon. Therefore for SVG
icons we effectively were reducing their quality.

If icon already contains 7 (or more) sizes (16 to 256 px) we do not
resize it anymore.
This commit is contained in:
Eugene Shalygin 2017-01-18 10:21:41 +01:00 • committed by sledgehammer999
parent 2946ab7e7a
commit c7884e7621
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7
src/gui/guiiconprovider.cpp
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@ -88,6 +88,13 @@ QIcon GuiIconProvider::getFlagIcon(const QString &countryIsoCode)
#if (defined(Q_OS_UNIX) && !defined(Q_OS_MAC))
QIcon GuiIconProvider::generateDifferentSizes(const QIcon &icon)
{
// if icon is loaded from SVG format, it already contains all the required sizes and we shall not resize it
// In that case it will be available in the following sizes:
// (QSize(16, 16), QSize(22, 22), QSize(32, 32), QSize(48, 48), QSize(64, 64), QSize(128, 128), QSize(256, 256))
if (icon.availableSizes(QIcon::Normal, QIcon::On).size() > 6)
return icon;
QIcon newIcon;
QList<QSize> requiredSizes;
requiredSizes << QSize(16, 16) << QSize(24, 24) << QSize(32, 32);