puzzlewidget.h

/****************************************************************************
**
** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
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** If you are unsure which license is appropriate for your use, please
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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****************************************************************************/

#ifndef PUZZLEWIDGET_H
#define PUZZLEWIDGET_H

#include <QList>
#include <QPoint>
#include <QPixmap>
#include <QWidget>

class QDragEnterEvent;
class QDropEvent;
class QMouseEvent;

class PuzzleWidget : public QWidget
{
    Q_OBJECT

public:
    PuzzleWidget(QWidget *parent = 0);
    void clear();

signals:
    void puzzleCompleted();

protected:
    void dragEnterEvent(QDragEnterEvent *event);
    void dragLeaveEvent(QDragLeaveEvent *event);
    void dragMoveEvent(QDragMoveEvent *event);
    void dropEvent(QDropEvent *event);
    void mousePressEvent(QMouseEvent *event);
    void paintEvent(QPaintEvent *event);

private:
    int findPiece(const QRect &pieceRect) const;
    const QRect targetSquare(const QPoint &position) const;

    QList<QPixmap> piecePixmaps;
    QList<QRect> pieceRects;
    QList<QPoint> pieceLocations;
    QRect highlightedRect;
    int inPlace;
};

#endif