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# puzzlewidget.h Example File
itemviews/puzzle/puzzlewidget.h

    /****************************************************************************
    **
    ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the example classes of the Qt Toolkit.
    **
    ** Licensees holding valid Qt Preview licenses may use this file in
    ** accordance with the Qt Preview License Agreement provided with the
    ** Software.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    ** information about Qt Commercial License Agreements.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ****************************************************************************/

    #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