plasma-framework/popupapplet.h
Aaron J. Seigo 64da2b88aa friends
svn path=/trunk/KDE/kdelibs/; revision=1180044
2010-09-26 20:35:00 +00:00

233 lines
7.6 KiB
C++

/*
* Copyright 2008 by Montel Laurent <montel@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#ifndef PLASMA_POPUPAPPLET_H
#define PLASMA_POPUPAPPLET_H
#include <plasma/applet.h>
#include <plasma/plasma_export.h>
#include <plasma/plasma.h>
class QGraphicsProxyWidget;
class QGraphicsLinearLayout;
namespace Plasma
{
class Dialog;
class IconWidget;
class PopupAppletPrivate;
/**
* Allows applets to automatically 'collapse' into an icon when put in an panel, and is a convenient
* base class for any applet that wishes to use extenders.
*
* Applets that subclass this class should implement either widget() or graphicsWidget() to return a
* widget that will be displayed in the applet if the applet is in a Planar or MediaCenter form
* factor. If the applet is put in a panel, an icon will be displayed instead, which shows the
* widget in a popup when clicked.
*
* If you use this class as a base class for your extender using applet, the extender will
* automatically be used for the popup; reimplementing graphicsWidget() is unnecessary in this case.
* If you need a popup that does not steal window focus when openend or used, set window flag
* Qt::X11BypassWindowManagerHint the widget returned by widget() or graphicsWidget().
*/
class PLASMA_EXPORT PopupApplet : public Plasma::Applet
{
Q_OBJECT
Q_PROPERTY(Qt::AlignmentFlag popupAlignment READ popupAlignment WRITE setPopupAlignment)
public:
PopupApplet(QObject *parent, const QVariantList &args);
~PopupApplet();
/**
* @arg icon the icon that has to be displayed when the applet is in a panel.
* Passing in a null icon means that the popup applet itself
* will provide an interface for when the PopupApplet is not showing
* the widget() or graphicsWidget() directly.
*/
void setPopupIcon(const QIcon &icon);
/**
* @arg icon the icon that has to be displayed when the applet is in a panel.
* Passing in an empty QString() means that the popup applet itself
* will provide an interface for when the PopupApplet is not showing
* the widget() or graphicsWidget() directly.
* If you set a popup icon you must also set a minimum size of the applet. When the applet
* is smaller than this minimum size, it will be displayed as that icon.
*/
void setPopupIcon(const QString &iconName);
/**
* @return the icon that is displayed when the applet is in a panel.
*/
QIcon popupIcon() const;
/**
* Implement either this function or graphicsWidget().
* @return the widget that will get shown in either a layout, in the applet or in a Dialog,
* depending on the form factor of the applet.
*/
virtual QWidget *widget();
void setWidget(QWidget * widget);
/**
* Implement either this function or widget().
* @return the widget that will get shown in either a layout, in the applet or in a Dialog,
* depending on the form factor of the applet.
* If you set a popup icon you must also set a minimum size of the applet. When the applet
* is smaller than this minimum size, it will be displayed as that icon.
*/
virtual QGraphicsWidget *graphicsWidget();
void setGraphicsWidget(QGraphicsWidget * widget);
/**
* @return the placement of the popup relating to the applet
*/
Plasma::PopupPlacement popupPlacement() const;
/**
* Sets the default alignment of the popup relative to the applet
* @arg alignment the alignment to use; Qt::AlignLeft or Qt::AlignRight
* @since 4.6
*/
void setPopupAlignment(Qt::AlignmentFlag alignment);
/**
* @return the default alignment of the popup relative to the applet
* @since 4.6
*/
Qt::AlignmentFlag popupAlignment() const;
/**
* Sets whether or not the dialog popup that gets created should be a "passive" popup
* that does not steal focus from other windows or not.
*
* @arg passive true if the dialog should be treated as a passive popup
*/
void setPassivePopup(bool passive);
/**
* @return true if the dialog will be treated as a passive poup
*/
bool isPassivePopup() const;
/**
* @return true if the applet is popped up
*/
bool isPopupShowing() const;
public Q_SLOTS:
/**
* Hides the popup.
*/
void hidePopup();
/**
* Shows the dialog showing the widget if the applet is in a panel.
* @arg displayTime the time in ms that the popup should be displayed, defaults to 0 which means
* always (until the user closes it again, that is).
*/
void showPopup(uint displayTime = 0);
/**
* Toggles the popup.
*/
void togglePopup();
protected:
/**
* This event handler can be reimplemented in a subclass to receive an
* event before the popup is shown or hidden.
* @arg show true if the popup is going to be shown, false if the popup
* is going to be hidden.
* Note that showing and hiding the popup on click is already done in PopupApplet.
*/
virtual void popupEvent(bool show);
/**
* Reimplemented from QGraphicsLayoutItem
*/
QSizeF sizeHint(Qt::SizeHint which, const QSizeF & constraint = QSizeF()) const;
/**
* Reimplemented from QGraphicsLayoutItem
*/
void mousePressEvent(QGraphicsSceneMouseEvent *event);
/**
* Reimplemented from QGraphicsLayoutItem
*/
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
/**
* Reimplemented from QGraphicsLayoutItem
*/
bool eventFilter(QObject *watched, QEvent *event);
/**
* Reimplemented from QGraphicsLayoutItem
*/
void dragEnterEvent(QGraphicsSceneDragDropEvent *event);
/**
* Reimplemented from QGraphicsLayoutItem
*/
void dragLeaveEvent(QGraphicsSceneDragDropEvent *event);
/**
* Reimplemented from QGraphicsLayoutItem
*/
void dropEvent(QGraphicsSceneDragDropEvent *event);
private:
/**
* @internal This constructor is to be used with the Package loading system.
*
* @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
* @since 4.3
*/
PopupApplet(const QString &packagePath, uint appletId, const QVariantList &args);
Q_PRIVATE_SLOT(d, void internalTogglePopup())
Q_PRIVATE_SLOT(d, void hideTimedPopup())
Q_PRIVATE_SLOT(d, void clearPopupLostFocus())
Q_PRIVATE_SLOT(d, void dialogSizeChanged())
Q_PRIVATE_SLOT(d, void dialogStatusChanged(bool))
Q_PRIVATE_SLOT(d, void updateDialogPosition())
Q_PRIVATE_SLOT(d, void appletActivated())
Q_PRIVATE_SLOT(d, void iconSizeChanged(int))
friend class Applet;
friend class AppletPrivate;
friend class Extender;
friend class PopupAppletPrivate;
PopupAppletPrivate * const d;
};
} // Plasma namespace
#endif /* POPUPAPPLET_H */