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commands.h

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#ifndef COMMANDS_H
#define COMMANDS_H

#include <QUndoCommand>
#include "document.h"

class AddShapeCommand : public QUndoCommand
{
public:
    AddShapeCommand(Document *doc, const Shape &shape, QUndoCommand *parent = 0);
    void undo();
    void redo();

private:
    Document *m_doc;
    Shape m_shape;
    QString m_shapeName;
};

class RemoveShapeCommand : public QUndoCommand
{
public:
    RemoveShapeCommand(Document *doc, const QString &shapeName, QUndoCommand *parent = 0);
    void undo();
    void redo();

private:
    Document *m_doc;
    Shape m_shape;
    QString m_shapeName;
};

class SetShapeColorCommand : public QUndoCommand
{
public:
    SetShapeColorCommand(Document *doc, const QString &shapeName, const QColor &color,
                            QUndoCommand *parent = 0);

    void undo();
    void redo();

    bool mergeWith(const QUndoCommand *command);
    int id() const;

private:
    Document *m_doc;
    QString m_shapeName;
    QColor m_oldColor;
    QColor m_newColor;
};

class SetShapeRectCommand : public QUndoCommand
{
public:
    SetShapeRectCommand(Document *doc, const QString &shapeName, const QRect &rect,
                            QUndoCommand *parent = 0);

    void undo();
    void redo();

    bool mergeWith(const QUndoCommand *command);
    int id() const;

private:
    Document *m_doc;
    QString m_shapeName;
    QRect m_oldRect;
    QRect m_newRect;
};

#endif // COMMANDS_H

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