/* * Copyright 2007 by Aaron Seigo * Copyright 2008 by Ménard Alexis * * 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_CONTAINMENT_H #define PLASMA_CONTAINMENT_H #include #include #include #include #include #include #include #include #include "widgets/icon.h" namespace Plasma { class AppletHandle; class DataEngine; class Package; class Corona; class View; class ContainmentPrivate; /** * @short The base class for plugins that provide backgrounds and applet grouping containers * * Containment objects provide the means to group applets into functional sets. * They also provide the following: * * creation of focussing event * - drawing of the background image (which can be interactive) * - form factors (e.g. panel, desktop, full screen, etc) * - applet layout management * * Since containment is actually just a Plasma::Applet, all the techniques used * for writing the visual presentation of Applets is applicable to Containtments. * Containments are differentiated from Applets by being marked with the ServiceType * of Plasma/Containment. Plugins registered with both the Applet and the Containment * ServiceTypes can be loaded for us in either situation. * * See techbase.kde.org for a tutorial on writing Containments using this class. */ class PLASMA_EXPORT Containment : public Applet { Q_OBJECT public: class StyleOption : public QStyleOptionGraphicsItem { public: explicit StyleOption(); explicit StyleOption(const StyleOption &other); explicit StyleOption(const QStyleOptionGraphicsItem &other); /** * The View, if any, that this containment is currently * being rendered into. Note: this may be NULL, so be * sure to check it before using it! */ Plasma::View *view; }; enum Type { NoContainmentType = -1 /**< @internal */, DesktopContainment = 0 /**< A desktop containment */, PanelContainment /**< A desktop panel */, CustomContainment = 127 /**< A containment that is neither a desktop nor a panel, but something application specific */ }; /** * @param parent the QGraphicsItem this applet is parented to * @param serviceId the name of the .desktop file containing the * information about the widget * @param containmentId a unique id used to differentiate between multiple * instances of the same Applet type */ explicit Containment(QGraphicsItem *parent = 0, const QString &serviceId = QString(), uint containmentId = 0); /** * This constructor is to be used with the plugin loading systems * found in KPluginInfo and KService. The argument list is expected * to have two elements: the KService service ID for the desktop entry * and an applet ID which must be a base 10 number. * * @param parent a QObject parent; you probably want to pass in 0 * @param args a list of strings containing two entries: the service id * and the applet id */ Containment(QObject *parent, const QVariantList &args); ~Containment(); /** * Reimplemented from Applet */ void init(); /** * Returns the type of containment */ Type containmentType() const; /** * Returns the Corona (if any) that this Containment is hosted by */ Corona* corona() const; /** * Returns a list of all known containments. * * @param category Only applets matchin this category will be returned. * Useful in conjunction with knownCategories. * If "Misc" is passed in, then applets without a * Categories= entry are also returned. * If an empty string is passed in, all applets are * returned. * @param parentApp the application to filter applets on. Uses the * X-KDE-ParentApp entry (if any) in the plugin info. * The default value of QString() will result in a * list containing only applets not specifically * registered to an application. * @return list of applets **/ static KPluginInfo::List listContainments(const QString &category = QString(), const QString &parentApp = QString()); /** * Returns a list of all known applets associated with a certain mimetype * * @return list of applets **/ static KPluginInfo::List listContainmentsForMimetype(const QString &mimetype); /** * Adds an applet to this Containment * * @param name the plugin name for the applet, as given by * KPluginInfo::pluginName() * @param args argument list to pass to the plasmoid * @param id to assign to this applet, or 0 to auto-assign it a new id * @param geometry where to place the applet, or to auto-place it if an invalid * is provided * @param delayedInit if true, init() will not be called on the applet * * @return a pointer to the applet on success, or 0 on failure */ Applet* addApplet(const QString &name, const QVariantList &args = QVariantList(), const QRectF &geometry = QRectF(-1, -1, -1, -1)); /** * add existing applet to this containment at pos * @param applet the applet that should be added * @param pos the containment-relative position * @param dontInit if true, init() will not be called on the applet */ void addApplet(Applet *applet, const QPointF &pos = QPointF(-1, -1), bool dontInit = true); /** * @return the applets currently in this Containment */ Applet::List applets() const; /** * Removes all applets from this Containment */ void clearApplets(); /** * Sets the physical screen this Containment is associated with. * * @param screen the screen number this containment is the desktop for, or -1 * if it is not serving as the desktop for any screen */ void setScreen(int screen); /** * @return the screen number this containment is serving as the desktop for * or -1 if none */ int screen() const; /** * @return where top left corner of the containment maps to for the currently * set screen. If no screen is associated, it will return QPoint() */ QPoint effectiveScreenPos() const; /** * @reimplemented from Applet */ void save(KConfigGroup &group) const; /** * @reimplemented from Applet */ void restore(KConfigGroup &group); /** * convenience function - enables or disables an action by name * * @param name the name of the action in our collection * @param enable true to enable, false to disable */ void enableAction(const QString &name, bool enable); /** * Add an action to the toolbox */ void addToolBoxTool(QAction *action); /** * Remove an action from the toolbox */ void removeToolBoxTool(QAction *action); /** * Sets the open or closed state of the Containment's toolbox * * @arg open true to open the ToolBox, false to close it */ void setToolBoxOpen(bool open); /** * Open the Containment's toolbox */ void openToolBox(); /** * Closes Containment's toolbox */ void closeToolBox(); /** * associate actions with this widget, including ones added after this call. * needed to make keyboard shortcuts work. */ void addAssociatedWidget(QWidget *widget); /** * un-associate actions from this widget, including ones added after this call. * needed to make keyboard shortcuts work. */ void removeAssociatedWidget(QWidget *widget); Q_SIGNALS: /** * This signal is emitted when a new applet is created by the containment */ void appletAdded(Plasma::Applet *applet, const QPointF &pos); /** * This signal is emitted when an applet is destroyed */ void appletRemoved(Plasma::Applet *applet); /** * Emitted when the containment requests zooming in or out one step. */ void zoomRequested(Plasma::Containment *containment, Plasma::ZoomDirection direction); /** * Emitted when the user clicks on the toolbox */ void toolBoxToggled(); /** * Emitted when the containment wants a new containment to be created. * Usually only used for desktop containments. */ void addSiblingContainment(Plasma::Containment *); /** * Emitted when the containment requests an add widgets dialog is shown. * Usually only used for desktop containments. * * @param pos where in the containment this request was made from, or * an invalid position (QPointF()) is not location specific */ void showAddWidgetsInterface(const QPointF &pos); /** * This signal indicates that a containment has been newly * associated (or dissociated) with a physical screen. * * @param wasScreen the screen it was associated with * @param isScreen the screen it is now associated with * @param containment the containment switching screens */ void screenChanged(int wasScreen, int isScreen, Plasma::Containment *containment); /** * Emitted when the containment wants to become active. * Usually only used for desktop containments. */ void focusRequested(Plasma::Containment *containment); public Q_SLOTS: /** * Informs the Corona as to what position it is in. This is informational * only, as the Corona doesn't change it's actual location. This is, * however, passed on to Applets that may be managed by this Corona. * * @param location the new location of this Corona */ void setLocation(Plasma::Location location); /** * Sets the form factor for this Containment. This may cause changes in both * the arrangement of Applets as well as the display choices of individual * Applets. */ void setFormFactor(Plasma::FormFactor formFactor); /** * Tells the corona to create a new desktop containment */ void addSiblingContainment(); /** * switch keyboard focus to the next of our applets */ void focusNextApplet(); /** * switch keyboard focus to the previous one of our applets */ void focusPreviousApplet(); /** * Destroys this containment and all its applets (after a confirmation dialog); * it will be removed nicely and deleted. * Its configuration will also be deleted. */ void destroy(); protected: /** * Sets the type of this containment. */ void setContainmentType(Containment::Type type); /** * Called when the contents of the containment should be saved. By default this saves * all loaded Applets * * @param group the KConfigGroup to save settings under */ virtual void saveContents(KConfigGroup &group) const; /** * Called when the contents of the containment should be loaded. By default this loads * all previously saved Applets * * @param group the KConfigGroup to save settings under */ virtual void restoreContents(KConfigGroup &group); void contextMenuEvent(QGraphicsSceneContextMenuEvent *event); void hoverEnterEvent(QGraphicsSceneHoverEvent *event); void hoverLeaveEvent(QGraphicsSceneHoverEvent *event); void keyPressEvent(QKeyEvent *event); bool sceneEventFilter(QGraphicsItem *watched, QEvent *event); QVariant itemChange(GraphicsItemChange change, const QVariant &value); /** * @reimplemented from QGraphicsItem */ void dragEnterEvent(QGraphicsSceneDragDropEvent *event); /** * @reimplemented from QGraphicsItem */ void dragMoveEvent(QGraphicsSceneDragDropEvent *event); /** * @reimplemented from QGraphicsItem */ void dropEvent(QGraphicsSceneDragDropEvent *event); private: Q_PRIVATE_SLOT(d, void appletDestroyed(QObject*)) Q_PRIVATE_SLOT(d, void containmentAppletAnimationComplete(QGraphicsItem *item, Plasma::Animator::Animation anim)) Q_PRIVATE_SLOT(d, void triggerShowAddWidgets()) Q_PRIVATE_SLOT(d, void handleDisappeared(AppletHandle *handle)) Q_PRIVATE_SLOT(d, void positionToolBox()) Q_PRIVATE_SLOT(d, void zoomIn()) Q_PRIVATE_SLOT(d, void zoomOut()) Q_PRIVATE_SLOT(d, void toggleDesktopImmutability()) friend class Applet; friend class ContainmentPrivate; ContainmentPrivate* const d; }; } // Plasma namespace #endif // multiple inclusion guard