Development/Architecture/KDE4/Plasma: Difference between revisions
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* '''Widget''': extends [http://doc.trolltech.com/qgraphicsitem.html QGraphicsItem] and works as simple elements in the desktop. There are some built-in in libplasma as icons or buttons. | * '''Widget''': extends [http://doc.trolltech.com/qgraphicsitem.html 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. | * '''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 | * '''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. | ||
===Further reading=== | ===Further reading=== | ||
Revision as of 00:48, 9 April 2009
Development/Architecture/KDE4/Plasma
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Plasma is the name of the new desktop planned to replace 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.