plasma-framework/widgets/widget.h

/*
 *   Copyright (C) 2007 by Alexander Wiedenbruch <mail@wiedenbruch.de>
 *                      and Matias Valdenegro <mvaldenegro@informatica.utem.cl>
 *
 *   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 WIDGET_H_
#define WIDGET_H_

#include <QtGui/QGraphicsItem>

#include <QtCore/QRectF>
#include <QtCore/QSizeF>

#include <plasma/widgets/layoutitem.h>
#include <plasma/plasma_export.h>

namespace Plasma
{

class Layout;

/**
 * Class that emulates a QWidget inside plasma
 */
class PLASMA_EXPORT Widget : public QGraphicsItem, public LayoutItem
{
public:
    explicit Widget(QGraphicsItem *parent = 0);
    virtual ~Widget();

    virtual Qt::Orientations expandingDirections() const;

    virtual QSizeF minimumSize() const;
    virtual QSizeF maximumSize() const;

    virtual bool hasHeightForWidth() const;
    virtual qreal heightForWidth(qreal w) const;

    virtual bool hasWidthForHeight() const;
    virtual qreal widthForHeight(qreal h) const;

    QRectF geometry() const;
    void setGeometry(const QRectF &geometry);

    void updateGeometry();

    virtual void invalidate();

    virtual QSizeF sizeHint() const;

    QSizeF size() const;

    virtual QRectF boundingRect() const;

    void resize(const QSizeF &size);
    void resize(qreal w, qreal h);

    void setLayout(Layout *l);
    Layout *layout() const;

    Widget *parent() const;
    void reparent(Widget *w);

    void addChild(Widget *w);
    void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);

private:
    class Private;
    Private *const d;
};

} // Plasma namespace

#endif