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- /* This file is part of the KDE libraries
- Copyright (C) 1999 Matthias Ettrich <ettrich@kde.org>
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License version 2 as published by the Free Software Foundation.
-
- This library 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
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public License
- along with this library; see the file COPYING.LIB. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
- */
- #ifndef KSYSTEMTRAY_H
- #define KSYSTEMTRAY_H
-
- #include <kglobal.h>
- #include <qlabel.h>
-
- class KActionCollection;
- class KPopupMenu;
- class KSystemTrayPrivate;
-
- /**
- * \brief %KDE System Tray Window class
- *
- * This class implements system tray windows.
- *
- * A tray window is a small window (typically 24x24 pixel) that docks
- * into the system tray in the desktop panel. It usually displays an
- * icon or an animated icon there. The icon represents
- * the application, similar to a taskbar button, but consumes less
- * screen space.
- *
- * When the user clicks with the left mouse button on the icon, the
- * main application window is shown/raised and activated. With the
- * right mouse button, she gets a popupmenu with application specific
- * commands, including "Minimize/Restore" and "Quit".
- *
- * Docking happens magically when calling show(). The window undocks
- * with either hide() or when it is destroyed.
- *
- * KSystemTray inherits methods such as setPixmap() and setMovie() to
- * specify an icon or movie (animated icon) respectively. It is
- * designed to be usable "as is", without the need to subclass it. In
- * case you need to provide something special (such as an additional
- * popupmenu on a click with the left mouse button), you can subclass
- * anyway, of course.
- *
- * Having an icon on the system tray is a useful technique for
- * daemon-like applications that may run for some time without user
- * interaction but have to be there immediately when the user needs
- * them. Examples are kppp, kisdn, kscd, kmix or knotes. With kppp and
- * kisdn, the docked icon even provides real-time information about
- * the network status.
- *
- * @author Matthias Ettrich <ettrich@kde.org>
- **/
- class KDEUI_EXPORT KSystemTray : public QLabel
- {
- Q_OBJECT
- public:
-
- /**
- * Construct a KSystemTray widget just like any other widget.
- *
- * The parent widget @p parent has a special meaning:
- * Besides owning the tray window, the parent widget will
- * dissappear from taskbars when it is iconified while the tray
- * window is visible. This is the desired behavior. After all,
- * the tray window @p is the parent's taskbar icon.
- *
- * Furthermore, the parent widget is shown or raised respectively
- * when the user clicks on the trray window with the left mouse
- * button.
- **/
- KSystemTray( QWidget* parent = 0, const char* name = 0 );
-
- /*
- Destructor
- */
- ~KSystemTray();
-
- /**
- Access to the context menu. This makes it easy to add new items
- to it.
- */
- KPopupMenu* contextMenu() const;
-
- /**
- Easy access to the actions in the context menu
- Currently includes KStdAction::Quit and minimizeRestore
- @since 3.1
- */
- KActionCollection* actionCollection();
-
- /**
- * Changes the tray's icon.
- */
- virtual void setPixmap( const QPixmap& icon );
-
- /**
- * Changes the tray's text description (which can be seen e.g. in the systray
- * configuration dialog). The default value is KAboutData::programName().
- */
- virtual void setCaption( const QString& title );
-
- /**
- * Loads an icon @p icon using the icon loader class of the given instance @p instance.
- * The icon is applied the panel effect as it should only be used to be shown in the
- * system tray.
- * It's commonly used in the form : systray->setPixmap( systray->loadIcon( "mysystray" ) );
- *
- * @since 3.2
- */
- static QPixmap loadIcon( const QString &icon, KInstance *instance=KGlobal::instance() );
-
- signals:
- /**
- * Emitted when quit is selected in the menu. If you want to perform any other
- * action than to close the main application window please connect to this signal.
- * @since 3.1
- */
- void quitSelected();
-
- public slots:
-
- /**
- * Toggles the state of the window associated with this system tray icon (hides it,
- * shows it or activates it depending on the window state). The default implementation
- * of mousePressEvent() calls toggleActive() when the tray icon is left-clicked, use
- * it when reimplementing mousePressEvent().
- * @since 3.3
- */
- void toggleActive();
- /**
- * Activates the window associated with this system tray icon, regardless of its current state.
- * @since 3.3
- */
- void setActive();
- /**
- * Hides the window associated with this system tray icon, regardless of its current state.
- * @since 3.3
- */
- void setInactive();
-
- protected:
-
- /**
- Reimplemented to provide the standard show/raise behavior
- for the parentWidget() and the context menu.
-
- Feel free to reimplement this if you need something special.
- */
- void mousePressEvent( QMouseEvent * );
-
- /**
- Reimplemented to provide the standard show/raise behavior
- for the parentWidget() and the context menu.
-
- Feel free to reimplement this if you need something special.
- */
- void mouseReleaseEvent( QMouseEvent * );
-
-
-
- /**
- Makes it easy to adjust some menu items right before the
- context menu becomes visible.
- */
- virtual void contextMenuAboutToShow( KPopupMenu* menu );
-
- /**
- Reimplemented for internal reasons.
- */
- void showEvent( QShowEvent * );
-
- /**
- Reimplemented for internal reasons.
- */
- void enterEvent( QEvent* );
-
- private slots:
- void minimizeRestoreAction();
- void maybeQuit();
-
- private:
- void activateOrHide();
- void minimizeRestore( bool restore );
- KPopupMenu* menu;
- // minimizeRestoreId is no longer needed. remove in KDE 4.0
- int minimizeRestoreId;
- uint hasQuit :1;
- protected:
- virtual void virtual_hook( int id, void* data );
- private:
- KSystemTrayPrivate* d;
- };
-
-
- #endif
-