Development/Architecture/KDE4/Plasma: Difference between revisions
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'''Corona''': extends [http://doc. | '''Corona''': extends [http://qt-project.org/doc/qt-4.8/qgraphicsscene.html QGraphicsScene] and provides functionality for adding applets and karamba themes.</translate> | ||
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'''Widget''': extends [http://doc. | '''Widget''': extends [http://qt-project.org/doc/qt-4.8/qgraphicsitem.html QGraphicsItem] and works as simple elements in the desktop. There are some built-in in libplasma as icons or buttons.</translate> | ||
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'''Applet''': extends Widget and implements sophisticated functionality as rss display, a clock or system monitoring.</translate> | '''Applet''': extends Widget and implements sophisticated functionality as rss display, a clock or system monitoring.</translate> | ||
Revision as of 13:24, 4 March 2013
Plasma is the name of the new desktop which replaced KDesktop in KDE4. You may think that it is a union of SuperKaramba and KDesktop, but it's more. It's a whole concept of functionality and beauty.
Its implementation is based on the Qt Graphics View Framework introduced in Qt 4.2.
From a developer point of view there are some classes in libplasma who play central roles.
- Corona: extends QGraphicsScene and provides functionality for adding applets and karamba themes.
- Widget: extends QGraphicsItem and works as simple elements in the desktop. There are some built-in in libplasma as icons or buttons.
- Applet: extends Widget and implements sophisticated functionality as rss display, a clock or system monitoring.
- DataEngine: The common use of a DataEngine is to provide data to an applet for display. This allows a user interface elements to show all sorts of data.