Loading icons is quite slow because we need to stat many files in many directories.
That's why gtk adds a cache in the icon theme directory so it avoids stating lots
of files.
The cache file can be generated with gtk-update-icon-cache utility on a theme
directory. If the cache is not present, corrupted, or outdated, the normal slow lookup
is still run.
[ChangeLog][QtGui][QIcon] fromTheme gained the ability to use the GTK icon cache
to speed up lookups.
Change-Id: I3ab8a9910be67a34034556023be61a86789a7893
Reviewed-by: David Faure <david.faure@kdab.com>
This commit fixes incorrect logic of icons' lookup if there are
fallbacks or more than one theme's directory.
According to Icon Theme Specification, Directory Layout section, theme
can be spread across several base directories by having subdirectories
of the same name. This makes possible to extend system themes by
application-specific icons without making of collisions with other
applications.
According to Icon Naming Specification, Icon Naming Guidelines section,
icon name may contain dashes to separate levels of specificity in icon
names. This makes possible to set in application very specific icon
which may be not in every theme. So it can fallback to less specific one.
Change-Id: Iafc813902a3646be56e8f1d3a2fdbf8fd32ac542
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
- Move the files and tests
git mv src/widgets/kernel/qicon* qrc/gui/image/
git mv tests/auto/widgets/kernel/qicon/ tests/auto/gui/image/
- update the include of QIcon
git grep -O"sed -i s,QtWidgets/qicon,QtGui/qicon," "QtWidgets/qicon"
git grep -O"sed -i s,QtWidgets/QIcon,QtGui/QIcon," "QtWidgets/QIcon"
- Adapt QIcon \ingroup documentation
sed -i s/QtWidgets/QtGui/ src/gui/images/qicon*
- Adapt export macro
sed -i s/Q_WIDGETS_EXPORT/Q_GUI_EXPORT/g src/gui/image/qicon*
- Update .pri and .pro files
- Remove the use of QStyle::alignedRect by copying its content (and
adapt slightly
- Use QGuiApplication::palette() instead of QApplication::palette()
- Add a hook in QGuiApplicationPrivate to call the
QStyle::generatedIconPixmap() from QtWidgets
Another commit follows to adjust QMetaType::Icon and move the QVariant
and QMetaType icon handler back in QtGui
Change-Id: I1b63759f892ebc02dfc30f41bb6e76e0b7451182
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>
