Development/Architecture/KDE4/Plasma: Difference between revisions

    From KDE TechBase
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    <translate>Plasma is the name of the new desktop planned to replace 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>
    <translate><!--T:1-->
    Plasma is the name of the new desktop planned to replace 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>


    <translate>Its implementation is based on the Qt [http://doc.trolltech.com/graphicsview.html Graphics View Framework] introduced in Qt 4.2.</translate>
    <translate><!--T:2-->
    Its implementation is based on the Qt [http://doc.trolltech.com/graphicsview.html Graphics View Framework] introduced in Qt 4.2.</translate>


    <translate>From a developer point of view there are some classes in libplasma who play central roles.</translate>
    <translate><!--T:3-->
    From a developer point of view there are some classes in libplasma who play central roles.</translate>


    * <translate>'''Corona''': extends [http://doc.trolltech.com/qgraphicsscene.html QGraphicsScene] and provides functionality for adding applets and karamba themes.</translate>
    * <translate><!--T:4-->
    * <translate>'''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>
    '''Corona''': extends [http://doc.trolltech.com/qgraphicsscene.html QGraphicsScene] and provides functionality for adding applets and karamba themes.</translate>
    * <translate>'''Applet''': extends Widget and implements sophisticated functionality as rss display, a clock or system monitoring.</translate>
    * <translate><!--T:5-->
    * <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>
    '''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>
    * <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>Further reading</translate>===
    ===<translate><!--T:8-->
    * <translate>[http://plasma.kde.org Plasma homesite]</translate>
    Further reading</translate>===
    * <translate>[http://api.kde.org/4.0-api/kdebase-workspace-apidocs/libs/plasma/html/index.html API]</translate>
    * <translate><!--T:9-->
    * <translate>[[Projects/Plasma|Plasma techbase page]]</translate>
    [http://plasma.kde.org Plasma homesite]</translate>
    * <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>




    <translate>[[Category:Architecture]]</translate>
    <translate><!--T:12-->
    <translate>[[Category:KDE4]]</translate>
    [[Category:Architecture]]</translate>
    <translate><!--T:13-->
    [[Category:KDE4]]</translate>

    Revision as of 20:12, 3 January 2013


    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.

    Further reading