/* * Copyright 2008 by Aaron Seigo * Copyright 2008 by Petri Damsten * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Library General Public License as * published by the Free Software Foundation; either version 2, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details * * You should have received a copy of the GNU Library General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef PLASMA_WALLPAPER_H #define PLASMA_WALLPAPER_H #include #include #include namespace Plasma { class WallpaperPrivate; /** * @class Wallpaper plasma/wallpaper.h * * @short The base Wallpaper class * * "Wallpapers" are components that paint the background for Containments that * do not provide their own background rendering. * * Wallpaper plugins are registered using .desktop files. These files should be * named using the following naming scheme: * * plasma-wallpaper-.desktop * * If a wallpaper plugin provides more than on mode (e.g. Single Image, Wallpaper) * it should include a Actions= entry in the .desktop file, listing the possible * actions. An actions group should be included to provide for translatable names. */ class PLASMA_EXPORT Wallpaper : public QObject { Q_OBJECT Q_PROPERTY(QRectF boundingRect READ boundingRect WRITE setBoundingRect) Q_PROPERTY(QString name READ name) Q_PROPERTY(QString pluginName READ pluginName) Q_PROPERTY(QString icon READ icon) Q_PROPERTY(KServiceAction renderingMode READ renderingMode) Q_PROPERTY(QList listRenderingModes READ listRenderingModes) public: ~Wallpaper(); /** * Returns a list of all known wallpapers. * * @return list of wallpapers **/ static KPluginInfo::List listWallpaperInfo(const QString &formFactor = QString()); /** * Attempts to load an wallpaper * * Returns a pointer to the wallpaper if successful. * The caller takes responsibility for the wallpaper, including * deleting it when no longer needed. * * @param name the plugin name, as returned by KPluginInfo::pluginName() * @param args to send the wallpaper extra arguments * @return a pointer to the loaded wallpaper, or 0 on load failure **/ static Wallpaper *load(const QString &name, const QVariantList &args = QVariantList()); /** * Attempts to load an wallpaper * * Returns a pointer to the wallpaper if successful. * The caller takes responsibility for the wallpaper, including * deleting it when no longer needed. * * @param info KPluginInfo object for the desired wallpaper * @param args to send the wallpaper extra arguments * @return a pointer to the loaded wallpaper, or 0 on load failure **/ static Wallpaper *load(const KPluginInfo &info, const QVariantList &args = QVariantList()); /** * Returns the user-visible name for the wallpaper, as specified in the * .desktop file. * * @return the user-visible name for the wallpaper. **/ QString name() const; /** * Returns the plugin name for the wallpaper */ QString pluginName() const; /** * Returns the icon related to this wallpaper **/ QString icon() const; /** * @return the currently active rendering mode */ KServiceAction renderingMode() const; /** * Sets the rendering mode for this wallpaper. * @param mode One of the modes supported by the plugin, * or an empty string for the default mode. */ void setRenderingMode(const QString &mode); /** * Returns modes the wallpaper has, as specified in the * .desktop file. */ QList listRenderingModes() const; /** * @return true if initialized (usually by calling retore), false otherwise */ bool isInitialized() const; /** * Returns bounding rectangle */ QRectF boundingRect() const; /** * Sets bounding rectangle */ void setBoundingRect(const QRectF &boundingRect); /** * This method is called when the wallpaper should be painted. * * @param painter the QPainter to use to do the painting * @param exposedRect the rect to paint within **/ virtual void paint(QPainter *painter, const QRectF &exposedRect) = 0; /** * This method should be called once the wallpaper is loaded or mode is changed. * @param config Config group to load settings * @see init **/ void restore(const KConfigGroup &config); /** * This method is called when settings need to be saved. * @param config Config group to save settings **/ virtual void save(KConfigGroup &config); /** * Returns widget for configuration dialog. */ virtual QWidget *createConfigurationInterface(QWidget *parent); /** * Mouse move event. To prevent further propagation of the event, * the event must be accepted. * * @param event the mouse event object */ virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event); /** * Mouse press event. To prevent further propagation of the even, * and to receive mouseMoveEvents, the event must be accepted. * * @param event the mouse event object */ virtual void mousePressEvent(QGraphicsSceneMouseEvent *event); /** * Mouse release event. To prevent further propagation of the event, * the event must be accepted. * * @param event the mouse event object */ virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event); /** * Mouse wheel event. To prevent further propagation of the event, * the event must be accepted. * * @param event the wheel event object */ virtual void wheelEvent(QGraphicsSceneWheelEvent *event); Q_SIGNALS: /** * This signal indicates that wallpaper needs to be repainted. */ void update(const QRectF &exposedArea); protected: /** * This constructor is to be used with the plugin loading systems * found in KPluginInfo and KService. The argument list is expected * to have one element: the KService service ID for the desktop entry. * * @param parent a QObject parent; you probably want to pass in 0 * @param args a list of strings containing one entry: the service id */ Wallpaper(QObject *parent, const QVariantList &args); /** * This method is called once the wallpaper is loaded or mode is changed. * The mode can be retrieved using the @see renderMode() method. * @param config Config group to load settings * @param mode One of the modes supported by the plugin, * or an empty string for the default mode. **/ virtual void init(const KConfigGroup &config); private: WallpaperPrivate *const d; }; } // Plasma namespace /** * Register an wallpaper when it is contained in a loadable module */ #define K_EXPORT_PLASMA_WALLPAPER(libname, classname) \ K_PLUGIN_FACTORY(factory, registerPlugin();) \ K_EXPORT_PLUGIN(factory("plasma_wallpaper_" #libname)) \ K_EXPORT_PLUGIN_VERSION(PLASMA_VERSION) #endif // multiple inclusion guard