fe805eb338
mouse events while dragging), and is generally shorter and cleaner. There are still some regressions I'll be working on fixing, but it basically works, avoids crashes and is even faster. svn path=/trunk/KDE/kdelibs/; revision=923915
263 lines
9.1 KiB
C++
263 lines
9.1 KiB
C++
/*
|
|
* Copyright 2008 by Rob Scheepmaker <r.scheepmaker@student.utwente.nl>
|
|
*
|
|
* 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_EXTENDERITEM_H
|
|
#define PLASMA_EXTENDERITEM_H
|
|
|
|
#include <QtGui/QGraphicsWidget>
|
|
|
|
#include <kconfiggroup.h>
|
|
#include <kicon.h>
|
|
|
|
#include "plasma/plasma_export.h"
|
|
|
|
namespace Plasma
|
|
{
|
|
|
|
class Applet;
|
|
class Extender;
|
|
class ExtenderItemPrivate;
|
|
|
|
/**
|
|
* @class ExtenderItem plasma/extenderitem.h <Plasma/ExtenderItem>
|
|
*
|
|
* @short Provides detachable items for an Extender
|
|
*
|
|
* This class wraps around a QGraphicsWidget and provides drag&drop handling, a draghandle,
|
|
* title and ability to display qactions as a row of icon, ability to expand, collapse, return
|
|
* to source and tracks configuration associated with this item for you.
|
|
*
|
|
* Typical usage of ExtenderItems in your applet could look like this:
|
|
*
|
|
* @code
|
|
* ExtenderItem *item = new ExtenderItem(extender());
|
|
* //name can be used to later access this item through extender()->item(name):
|
|
* item->setName("networkmonitoreth0");
|
|
* item->config().writeEntry("device", "eth0");
|
|
* initExtenderItem(item);
|
|
* @endcode
|
|
*
|
|
* You'll then need to implement the initExtenderItem function. Having this function in your applet
|
|
* makes sure that detached extender items get restored after plasma is restarted, just like applets
|
|
* are. That is also the reason that we write an entry in item->config().
|
|
* In this function you should instantiate a QGraphicsWidget or QGraphicsItem and call the
|
|
* setWidget function on the ExtenderItem. This is the only correct way of adding actual content to
|
|
* a extenderItem. An example:
|
|
*
|
|
* @code
|
|
* void MyApplet::initExtenderItem(Plasma::ExtenderItem *item)
|
|
* {
|
|
* QGraphicsWidget *myNetworkMonitorWidget = new NetworkMonitorWidget(item);
|
|
* dataEngine("networktraffic")->connectSource(item->config().readEntry("device", ""),
|
|
* myNetworkMonitorWidget);
|
|
* item->setWidget(myNetworkMonitorWidget);
|
|
* }
|
|
* @endcode
|
|
*
|
|
*/
|
|
class PLASMA_EXPORT ExtenderItem : public QGraphicsWidget
|
|
{
|
|
Q_OBJECT
|
|
Q_PROPERTY(QGraphicsItem * widget READ widget WRITE setWidget)
|
|
Q_PROPERTY(QString title READ title WRITE setTitle)
|
|
Q_PROPERTY(QString name READ name WRITE setName)
|
|
Q_PROPERTY(QIcon icon READ icon WRITE setIcon)
|
|
Q_PROPERTY(Extender * extender READ extender WRITE setExtender)
|
|
Q_PROPERTY(bool collapsed READ isCollapsed WRITE setCollapsed)
|
|
Q_PROPERTY(bool detached READ isDetached)
|
|
Q_PROPERTY(uint autoExpireDelay READ autoExpireDelay WRITE setAutoExpireDelay)
|
|
|
|
public:
|
|
/**
|
|
* The constructor takes care of adding this item to an extender.
|
|
* @param hostExtender The extender the extender item belongs to.
|
|
* @param extenderItemId the id of the extender item. Use the default 0 to assign a new,
|
|
* unique id to this extender item.
|
|
*/
|
|
explicit ExtenderItem(Extender *hostExtender, uint extenderItemId = 0);
|
|
|
|
~ExtenderItem();
|
|
|
|
/**
|
|
* fetch the configuration of this widget.
|
|
* @return the configuration of this widget.
|
|
*/
|
|
KConfigGroup config() const;
|
|
|
|
/**
|
|
* @param widget The widget that should be wrapped into the extender item.
|
|
*/
|
|
void setWidget(QGraphicsItem *widget);
|
|
|
|
/**
|
|
* @return The widget that is wrapped into the extender item.
|
|
*/
|
|
QGraphicsItem *widget() const;
|
|
|
|
/**
|
|
* @param title the title that will be shown in the extender item's dragger. Default is
|
|
* no title. This title will also be stored in the item's configuration, so you don't have
|
|
* to manually store/restore this information for your extender items.
|
|
*/
|
|
void setTitle(const QString &title);
|
|
|
|
/**
|
|
* @return the title shown in the extender item's dragger.
|
|
*/
|
|
QString title() const;
|
|
|
|
/**
|
|
* You can assign names to extender items to look them up through the item() function.
|
|
* Make sure you only use unique names. This name will be stored in the item's
|
|
* configuration.
|
|
* @param name the name of the item. Defaults to an empty string.
|
|
*/
|
|
void setName(const QString &name);
|
|
|
|
/**
|
|
* @return the name of the item.
|
|
*/
|
|
QString name() const;
|
|
|
|
/**
|
|
* @param icon the icon name to display in the extender item's
|
|
* drag handle. Defaults to the source applet's icon. This icon name will also be stored
|
|
* in the item's configuration, so you don't have to manually store/restore this
|
|
* information.
|
|
*/
|
|
void setIcon(const QString &icon);
|
|
|
|
/**
|
|
* @param icon the icon to display in the extender item's drag handle. Defaults to the
|
|
* source applet's icon.
|
|
*/
|
|
void setIcon(const QIcon &icon);
|
|
|
|
/**
|
|
* @return the icon being displayed in the extender item's drag handle.
|
|
*/
|
|
QIcon icon() const;
|
|
|
|
/**
|
|
* @param extender the extender this item belongs to.
|
|
* @param pos the position in the extender this item should be added. Defaults to 'just
|
|
* append'.
|
|
*/
|
|
void setExtender(Extender *extender, const QPointF &pos = QPointF(-1, -1));
|
|
|
|
/**
|
|
* @return the extender this items belongs to.
|
|
*/
|
|
Extender *extender() const;
|
|
|
|
/**
|
|
* @param time (in ms) before this extender item destroys itself unless it is detached,
|
|
* in which case this extender stays around. 0 means forever and is the default.
|
|
*/
|
|
void setAutoExpireDelay(uint time);
|
|
|
|
/**
|
|
* @return whether or not this extender item has an auto expire delay.
|
|
*/
|
|
uint autoExpireDelay() const;
|
|
|
|
/**
|
|
* @return whether or not this item is detached from it's original source.
|
|
*/
|
|
bool isDetached() const;
|
|
|
|
/**
|
|
* @return whether or not the extender item is collapsed.
|
|
*/
|
|
bool isCollapsed() const;
|
|
|
|
/**
|
|
* @param name the name to store the action under in our collection.
|
|
* @param action the action to add. Actions will be displayed as an icon in the drag
|
|
* handle.
|
|
*/
|
|
void addAction(const QString &name, QAction *action);
|
|
|
|
/**
|
|
* @return the QAction with the given name from our collection. By default the action
|
|
* collection contains a "movebacktosource" action which will be only shown when the
|
|
* item is detached.
|
|
*/
|
|
QAction *action(const QString &name) const;
|
|
|
|
public Q_SLOTS:
|
|
/**
|
|
* Destroys the extender item. As opposed to calling delete on this class, destroy also
|
|
* removes the config group associated with this item.
|
|
*/
|
|
void destroy();
|
|
|
|
/**
|
|
* Collapse or expand the extender item. Defaults to false.
|
|
*/
|
|
void setCollapsed(bool collapsed);
|
|
|
|
/**
|
|
* Returns the extender item to its source applet.
|
|
*/
|
|
void returnToSource();
|
|
|
|
/**
|
|
* Shows a close button in this item's drag handle. By default a close button will not be
|
|
* shown.
|
|
*/
|
|
void showCloseButton();
|
|
|
|
/**
|
|
* Hides the close button in this item's drag handle.
|
|
*/
|
|
void hideCloseButton();
|
|
|
|
protected:
|
|
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
|
|
|
|
void moveEvent(QGraphicsSceneMoveEvent *event);
|
|
void resizeEvent(QGraphicsSceneResizeEvent *event);
|
|
|
|
void mousePressEvent(QGraphicsSceneMouseEvent *event);
|
|
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event);
|
|
void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
|
|
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
|
|
|
|
void hoverMoveEvent(QGraphicsSceneHoverEvent *event);
|
|
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
|
|
|
|
bool sceneEventFilter(QGraphicsItem *watched, QEvent *event);
|
|
|
|
private:
|
|
Q_PRIVATE_SLOT(d, void toggleCollapse())
|
|
Q_PRIVATE_SLOT(d, void updateToolBox())
|
|
Q_PRIVATE_SLOT(d, void themeChanged())
|
|
Q_PRIVATE_SLOT(d, void sourceAppletRemoved())
|
|
Q_PRIVATE_SLOT(d, void actionDestroyed(QObject*))
|
|
|
|
ExtenderItemPrivate * const d;
|
|
|
|
friend class Extender;
|
|
friend class ExtenderPrivate;
|
|
friend class ExtenderItemPrivate;
|
|
};
|
|
} // namespace Plasma
|
|
#endif // PLASMA_EXTENDERITEM_H
|