/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the demonstration applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef DOCUMENT_H+
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#define DOCUMENT_H+
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+
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#include <QWidget>+
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+
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QT_FORWARD_DECLARE_CLASS(QUndoStack)+
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QT_FORWARD_DECLARE_CLASS(QTextStream)+
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+
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class Shape+
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{+
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public:+
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    enum Type { Rectangle, Circle, Triangle };+
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+
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    Shape(Type type = Rectangle, const QColor &color = Qt::red, const QRect &rect = QRect());+
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+
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    Type type() const;+
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    QString name() const;+
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    QRect rect() const;+
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    QRect resizeHandle() const;+
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    QColor color() const;+
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+
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    static QString typeToString(Type type);+
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    static Type stringToType(const QString &s, bool *ok = 0);+
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+
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    static const QSize minSize;+
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+
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private:+
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    Type m_type;+
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    QRect m_rect;+
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    QColor m_color;+
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    QString m_name;+
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+
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    friend class Document;+
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};+
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+
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class Document : public QWidget+
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{+
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    Q_OBJECT+
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+
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public:+
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    Document(QWidget *parent = 0);+
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+
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    QString addShape(const Shape &shape);+
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    void deleteShape(const QString &shapeName);+
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    Shape shape(const QString &shapeName) const;+
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    QString currentShapeName() const;+
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+
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    void setShapeRect(const QString &shapeName, const QRect &rect);+
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    void setShapeColor(const QString &shapeName, const QColor &color);+
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+
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    bool load(QTextStream &stream);+
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    void save(QTextStream &stream);+
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+
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    QString fileName() const;+
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    void setFileName(const QString &fileName);+
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+
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    QUndoStack *undoStack() const;+
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+
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signals:+
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    void currentShapeChanged(const QString &shapeName);+
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+
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protected:+
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    void paintEvent(QPaintEvent *event);+
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    void mousePressEvent(QMouseEvent *event);+
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    void mouseReleaseEvent(QMouseEvent *event);+
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    void mouseMoveEvent(QMouseEvent *event);+
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+
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private:+
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    void setCurrentShape(int index);+
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    int indexOf(const QString &shapeName) const;+
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    int indexAt(const QPoint &pos) const;+
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    QString uniqueName(const QString &name) const;+
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+
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    QList<Shape> m_shapeList;+
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    int m_currentIndex;+
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    int m_mousePressIndex;+
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    QPoint m_mousePressOffset;+
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    bool m_resizeHandlePressed;+
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    QString m_fileName;+
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+
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    QUndoStack *m_undoStack;+
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};+
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+
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#endif // DOCUMENT_H+
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