plasma-framework/widgets/slider.h

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/*
* Copyright 2008 Aaron Seigo <aseigo@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* 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 PLASMA_SLIDER_H
#define PLASMA_SLIDER_H
#include <QtGui/QGraphicsProxyWidget>
#include <plasma/plasma_export.h>
class QSlider;
namespace Plasma
{
class SliderPrivate;
/**
* @class Slider plasma/widgets/slider.h <Plasma/Widgets/Slider>
*
* @short Provides a plasma-themed QSlider.
*/
class PLASMA_EXPORT Slider : public QGraphicsProxyWidget
{
Q_OBJECT
Q_PROPERTY(QGraphicsWidget *parentWidget READ parentWidget)
Q_PROPERTY(int maximum READ maximum WRITE setMaximum)
Q_PROPERTY(int minimum READ minimum WRITE setMinimum)
Q_PROPERTY(int value READ value WRITE setValue NOTIFY valueChanged)
Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
Q_PROPERTY(QSlider *nativeWidget READ nativeWidget)
public:
explicit Slider(QGraphicsWidget *parent = 0);
~Slider();
/**
* @return the maximum value
*/
int maximum() const;
/**
* @return the minimum value
*/
int minimum() const;
/**
* @return the current value
*/
int value() const;
/**
* @return the orientation of the slider
*/
Qt::Orientation orientation() const;
/**
* Sets the stylesheet used to control the visual display of this Slider
*
* @param stylesheet a CSS string
*/
void setStyleSheet(const QString &stylesheet);
/**
* @return the stylesheet currently used with this widget
*/
QString styleSheet();
/**
* @return the native widget wrapped by this Slider
*/
QSlider *nativeWidget() const;
protected:
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
void wheelEvent(QGraphicsSceneWheelEvent *event);
public Q_SLOTS:
/**
* Sets the maximum value the slider can take.
*/
void setMaximum(int maximum);
/**
* Sets the minimum value the slider can take.
*/
void setMinimum(int minimum);
/**
* Sets the minimum and maximum values the slider can take.
*/
void setRange(int minimum, int maximum);
/**
* Sets the value of the slider.
*
* If it is outside the range specified by minimum() and maximum(),
* it will be adjusted to fit.
*/
void setValue(int value);
/**
* Sets the orientation of the slider.
*/
void setOrientation(Qt::Orientation orientation);
Q_SIGNALS:
/**
* This signal is emitted when the user drags the slider.
*
* In fact, it is emitted whenever the sliderMoved(int) signal
* of QSlider would be emitted. See the Qt documentation for
* more information.
*/
void sliderMoved(int value);
/**
* This signal is emitted when the slider value has changed,
* with the new slider value as argument.
*/
void valueChanged(int value);
private:
SliderPrivate * const d;
};
} // namespace Plasma
#endif // multiple inclusion guard