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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef PUZZLEWIDGET_H
+#define PUZZLEWIDGET_H
+
+#include <QList>
+#include <QPoint>
+#include <QPixmap>
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QDragEnterEvent;
+class QDropEvent;
+class QMouseEvent;
+QT_END_NAMESPACE
+
+class PuzzleWidget : public QWidget
+{
+    Q_OBJECT
+
+public:
+    PuzzleWidget(int imageSize, QWidget *parent = 0);
+    void clear();
+
+    int pieceSize() const;
+    int imageSize() const;
+
+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;
+    int m_ImageSize;
+};
+
+#endif