plasma-framework/popupapplet.h
Loic Marteau b6cb43398d - add a "popupPosition" support to PopupApplet so applets can use it to deal with
fitt law optimisation
- also save the new size of the popup (Plasma::Dialog) in the config file when user 
resize it
- use popupPosition facilities in kickoff and remove the resize stuff on it since it 
can be now directly dealed in Plasma::Dialog


svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=860323
2008-09-12 17:16:58 +00:00

126 lines
4.1 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 POPUPAPPLET_H
#define POPUPAPPLET_H
#include <plasma/applet.h>
#include <plasma/plasma_export.h>
class QGraphicsProxyWidget;
class QGraphicsLinearLayout;
namespace Plasma
{
class Dialog;
class Icon;
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, you should implement
* graphicsWidget() to return extender(), and connect the extenders geometryChanged() signal to the
* widgetGeometryChanged() slot.
*/
class PLASMA_EXPORT PopupApplet : public Plasma::Applet
{
Q_OBJECT
public:
PopupApplet(QObject *parent, const QVariantList &args);
~PopupApplet();
/**
* @arg icon the icon that has to be displayed when the applet is in a panel.
*/
void setIcon(const QIcon &icon);
/**
* @arg icon the icon that has to be displayed when the applet is in a panel.
*/
void setIcon(const QString &iconName);
/**
* @return the icon that is displayed when the applet is in a panel.
*/
QIcon icon() 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();
/**
* 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.
*/
virtual QGraphicsWidget *graphicsWidget();
/**
* 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);
/**
* @return the placement of the popup relating to the icon
*/
Plasma::PopupPlacement popupPlacement() const;
/**
* 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);
public Q_SLOTS:
/**
* Hides the popup.
*/
void hidePopup();
protected:
void constraintsEvent(Plasma::Constraints constraints);
bool eventFilter(QObject *watched, QEvent *event);
QVariant itemChange(GraphicsItemChange change, const QVariant &value);
private:
Q_PRIVATE_SLOT(d, void togglePopup())
Q_PRIVATE_SLOT(d, void hideTimedPopup())
Q_PRIVATE_SLOT(d, void dialogSizeChanged())
Q_PRIVATE_SLOT(d, void dialogStatusChanged(bool))
PopupAppletPrivate * const d;
};
} // Plasma namespace
#endif /* POPUPAPPLET_H */