plasma-framework/widgets/scrollwidget.h
Giulio Camuffo 81b39250cb added ensureItemVisible(QGraphicsItem*)
svn path=/trunk/KDE/kdelibs/; revision=1031380
2009-10-04 20:08:37 +00:00

186 lines
5.1 KiB
C++

/*
* Copyright 2009 Marco Martin <notmart@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 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_SCROLLWIDGET_H
#define PLASMA_SCROLLWIDGET_H
#include <QtGui/QGraphicsWidget>
#include <plasma/plasma_export.h>
namespace Plasma
{
class ScrollWidgetPrivate;
/**
* @class ScrollWidget plasma/widgets/ScrollWidget.h <Plasma/Widgets/ScrollWidget>
*
* @short A container of widgets that can have scrollbars
*
* A container of widgets that can have horizontal and vertical scrollbars if the content is bigger than the widget itself
*
* @since 4.3
*/
class PLASMA_EXPORT ScrollWidget : public QGraphicsWidget
{
Q_OBJECT
Q_PROPERTY(QGraphicsWidget *widget READ widget WRITE setWidget)
Q_PROPERTY(Qt::ScrollBarPolicy horizontalScrollBarPolicy READ horizontalScrollBarPolicy WRITE setHorizontalScrollBarPolicy)
Q_PROPERTY(Qt::ScrollBarPolicy verticalScrollBarPolicy READ verticalScrollBarPolicy WRITE setVerticalScrollBarPolicy)
Q_PROPERTY(qreal horizontalScrollValue READ horizontalScrollValue WRITE setHorizontalScrollValue)
Q_PROPERTY(qreal verticalScrollValue READ verticalScrollValue WRITE setVerticalScrollValue)
Q_PROPERTY(QRectF viewport READ viewport)
Q_PROPERTY(QString styleSheet READ styleSheet WRITE setStyleSheet)
public:
/**
* Constructs a new ScrollWidget
*
* @arg parent the parent of this widget
*/
explicit ScrollWidget(QGraphicsWidget *parent = 0);
~ScrollWidget();
/**
* Sets the widget this ScrollWidget will contain
* ownership is transferred to this scrollwidget,
* if an old one was already in, it will be deleted
*
* @arg widget the new main sub widget
*/
void setWidget(QGraphicsWidget *widget);
/**
* @return the main widget
*/
QGraphicsWidget *widget() const;
/**
* Sets the horizontal scrollbar policy
*
* @arg policy desired policy
*/
void setHorizontalScrollBarPolicy(const Qt::ScrollBarPolicy policy);
/**
* @return the horizontal scrollbar policy
*/
Qt::ScrollBarPolicy horizontalScrollBarPolicy() const;
/**
* Sets the vertical scrollbar policy
*
* @arg policy desired policy
*/
void setVerticalScrollBarPolicy(const Qt::ScrollBarPolicy policy);
/**
* @return the vertical scrollbar policy
*/
Qt::ScrollBarPolicy verticalScrollBarPolicy() const;
/**
* Scroll the view until the given rectangle is visible
*
* @param rect rect we want visible, in coordinates mapped to the inner widget
* @since 4.4
*/
void ensureRectVisible(const QRectF &rect);
/**
* Scroll the view until the given item is visible
*
* @param item item we want visible
* @since 4.4
*/
void ensureItemVisible(QGraphicsItem *item);
/**
* The horizontal scroll value, between 0 and 100
* @since 4.4
*/
qreal horizontalScrollValue() const;
/**
* Set the horizontal scroll value, between 0 and 100
* @since 4.4
*/
void setHorizontalScrollValue(qreal value);
/**
* The horizontal scroll value, between 0 and 100
* @since 4.4
*/
qreal verticalScrollValue() const;
/**
* Set the horizontal scroll value, between 0 and 100
* @since 4.4
*/
void setVerticalScrollValue(qreal value);
/**
* The scrollable widget size.
* @since 4.4
*/
QRectF viewport() const;
/**
* Sets the stylesheet used to control the visual display of this ScrollWidget
*
* @arg stylesheet a CSS string
*/
void setStyleSheet(const QString &stylesheet);
/**
* @return the stylesheet currently used with this widget
*/
QString styleSheet() const;
/**
* @return the native widget wrapped by this ScrollWidget
*/
QWidget *nativeWidget() const;
protected:
void resizeEvent(QGraphicsSceneResizeEvent *event);
void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
void mousePressEvent(QGraphicsSceneMouseEvent *event);
void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
void wheelEvent(QGraphicsSceneWheelEvent *event);
bool eventFilter(QObject *watched, QEvent *event);
void focusInEvent(QFocusEvent *event);
private:
ScrollWidgetPrivate * const d;
Q_PRIVATE_SLOT(d, void verticalScroll(int value))
Q_PRIVATE_SLOT(d, void horizontalScroll(int value))
Q_PRIVATE_SLOT(d, void makeRectVisible())
};
} // namespace Plasma
#endif // multiple inclusion guard