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