commands.h Example File

tools/undo/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() override; void redo() override; 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() override; void redo() override; 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() override; void redo() override; bool mergeWith(const QUndoCommand *command) override; int id() const override; 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() override; void redo() override; bool mergeWith(const QUndoCommand *command) override; int id() const override; private: Document *m_doc; QString m_shapeName; QRect m_oldRect; QRect m_newRect; }; #endif // COMMANDS_H