plasma-framework/widgets/icon.h
Robert Knight ad83b23dc4 Reimplement sizeHint() in Plasma::Icon, otherwise an invalid size hint gets returned.
svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=699874
2007-08-14 06:59:36 +00:00

223 lines
6.0 KiB
C++

/*
* Copyright (C) 2007 by Siraj Razick <siraj@kde.org>
* Copyright (C) 2007 by Riccardo Iaconelli <riccardo@kde.org>
* Copyright (C) 2007 by Matt Broadstone <mbroadst@gmail.com>
*
* This program 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 program 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 General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef ICON_H
#define ICON_H
#include <QtCore/QObject>
#include <QtGui/QGraphicsTextItem>
#include <QtGui/QIcon>
#include <plasma/dataengine.h>
#include <plasma/phase.h>
#include <plasma/plasma_export.h>
#include <plasma/widgets/widget.h>
class QAction;
/**
* This class provides a generic Icon for the Plasma desktop. An icon, in this
* sense, is not restricted to just an image, but can also contain text. Currently,
* the Icon class is primarily used for desktop items, but is designed to be used
* anywhere an icon is needed in an applet.
*
* @author Siraj Razick <siraj@kde.org>
* @author Matt Broadstone <mbroadst@gmail.com>
*/
namespace Plasma
{
class PLASMA_EXPORT Icon : public Plasma::Widget
{
Q_OBJECT
Q_PROPERTY( QString text READ text WRITE setText )
Q_PROPERTY( QString infoText READ infoText WRITE setInfoText )
Q_PROPERTY( QIcon icon READ icon WRITE setIcon )
Q_PROPERTY( QSizeF iconSize READ iconSize WRITE setIconSize )
public:
/**
* Creates a new Plasma::Icon.
* @param parent the QGraphicsItem this icon is parented to.
*/
explicit Icon(QGraphicsItem *parent = 0);
/**
* Convenience constructor to create a Plasma::Icon with text.
* @param text the text that will be displayed with this icon.
* @param parent the QGraphicsItem this icon is parented to.
*/
explicit Icon(const QString &text, QGraphicsItem *parent = 0);
/**
* Creates a new Plasma::Icon with text and an icon.
* @param icon the icon that will be displayed with this icon.
* @param text the text that will be displayed with this icon.
* @param parent The QGraphicsItem this icon is parented to.
*/
Icon(const QIcon &icon, const QString &text, QGraphicsItem *parent = 0);
/**
* Destroys this Plasma::Icon.
*/
virtual ~Icon();
/**
* Returns the text associated with this icon.
*/
QString text() const;
/**
* Sets the text associated with this icon.
* @param text the text to associate with this icon.
*/
void setText(const QString &text);
/**
* Returns the meta text associated with this icon.
*/
QString infoText() const;
/**
* Sets the additional information to be displayed by
* this icon.
* @param text additional meta text associated with this icon.
*/
void setInfoText(const QString &text);
/**
* @return the icon associated with this icon.
*/
QIcon icon() const;
/**
* Sets the graphical icon for this Plasma::Icon.
* @param icon the KIcon to associate with this icon.
*/
void setIcon(const QIcon& icon);
/**
* Convenience method to set the icon of this Plasma::Icon
* using a QString path to the icon.
* @param icon the path to the icon to associate with this Plasma::Icon.
*/
Q_INVOKABLE void setIcon(const QString& icon);
/**
* @return the size of this Plasma::Icon's graphical icon.
*/
QSizeF iconSize() const;
/**
* Sets the size of the graphical icon for this Plasma::Icon.
* @param size the size of the icon.
*/
void setIconSize(const QSizeF& size);
/**
* Convenience method to set the icon size without a QSizeF.
* @param height the height of the icon.
* @param width the width of the icon.
*/
Q_INVOKABLE void setIconSize(int height, int width);
/**
* Plasma::Icon allows the user to specify a number of actions
* (current four) to be displayed around the widget. This method
* allows for a created QAction (not a KAction!) to be added to
* the Plasma::Icon.
* @param action the QAction to associate with this icon.
*/
void addAction(QAction* action);
// Layout stuff - no need to document
/*
Qt::Orientations expandingDirections() const;
QSizeF minimumSize() const;
QSizeF maximumSize() const;
bool hasHeightForWidth() const;
qreal heightForWidth(qreal w) const;
bool hasWidthForHeight() const;
qreal widthForHeight(qreal h) const;
QRectF geometry() const;
void setGeometry(const QRectF& r);
QSizeF sizeHint() const;
*/
QSizeF sizeHint() const;
QRectF boundingRect() const;
protected:
void paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
Q_SIGNALS:
/**
* Indicates when the icon has been pressed.
*/
void pressed(bool down);
/**
* Indicates when the icon has been clicked.
*/
void clicked();
protected:
bool isDown();
void mousePressEvent(QGraphicsSceneMouseEvent *event);
void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
public:
class Private;
/**
* @internal
**/
void drawActionButtonBase(QPainter* painter, const QSize &size, int element);
private:
void init();
void calculateSize();
void calculateSize(const QStyleOptionGraphicsItem *option);
Private * const d;
private Q_SLOTS:
void actionDestroyed(QObject* obj);
};
} // namespace Plasma
/*
// Add these to UrlIcon
void setUrl(const KUrl& url);
KUrl url() const;
*/
#endif