Development/Architecture/KDE4/Plasma: Difference between revisions

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<translate><!--T:1-->
Plasma is the name of the new desktop which replaced KDesktop in KDE4. You may think that it is a union of [http://netdragon.sf.net SuperKaramba] and KDesktop, but it's more. It's a whole concept of functionality and beauty.
Plasma is the name of the new desktop which replaced KDesktop in KDE4. You may think that it is a union of [http://netdragon.sf.net SuperKaramba] and KDesktop, but it's more. It's a whole concept of functionality and beauty.</translate>


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Its implementation is based on the Qt Graphics View Framework introduced in Qt 4.2.
Its implementation is based on the Qt [http://qt-project.org/doc/qt-4.8/qgraphicsview.html Graphics View Framework] introduced in Qt 4.2.</translate>


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From a developer point of view there are some classes in libplasma who play central roles.
From a developer point of view there are some classes in libplasma who play central roles.</translate>


* <translate><!--T:4-->
* '''Corona''': extends {{qt|QGraphicsScene}} and provides functionality for adding applets and karamba themes.
'''Corona''': extends [http://doc.trolltech.com/qgraphicsscene.html QGraphicsScene] and provides functionality for adding applets and karamba themes.</translate>
* '''Widget''': extends {{qt|QGraphicsItem}} and works as simple elements in the desktop. There are some built-in in libplasma as icons or buttons.
* <translate><!--T:5-->
* '''Applet''': extends Widget and implements sophisticated functionality as rss display, a clock or system monitoring.
'''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.</translate>
* '''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.
* <translate><!--T:6-->
'''Applet''': extends Widget and implements sophisticated functionality as rss display, a clock or system monitoring.</translate>
* <translate><!--T:7-->
'''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.</translate>


===<translate><!--T:8-->
===Further reading===
Further reading</translate>===
* [http://community.kde.org/Plasma Plasma community page]
* <translate><!--T:9-->
* [http://plasma.kde.org Plasma homepage]
[http://plasma.kde.org Plasma homesite]</translate>
* [http://api.kde.org/4.0-api/kdebase-workspace-apidocs/libs/plasma/html/index.html API]
* <translate><!--T:10-->
[http://api.kde.org/4.0-api/kdebase-workspace-apidocs/libs/plasma/html/index.html API]</translate>
* <translate><!--T:11-->
[[Projects/Plasma|Plasma techbase page]]</translate>




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[[Category:Architecture]]
[[Category:Architecture]]</translate>
[[Category:KDE4]]
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[[Category:KDE4]]</translate>

Latest revision as of 12:33, 9 February 2018

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.

Further reading