qt5base-lts/examples/widgets/tools/undoframework/commands.h
hjk 40a54bf565 Examples: Replace 'Q_DECL_OVERRIDE' by 'override'
Examples should demonstrate best practice, and we can use the keyword
directly nowadays.

Change-Id: I1f122e5caceca17290757ffbaf3d660e7daa9ae4
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
2016-06-15 09:32:30 +00:00

115 lines
3.6 KiB
C++

/****************************************************************************
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#ifndef COMMANDS_H
#define COMMANDS_H
#include <QUndoCommand>
#include "diagramitem.h"
//! [0]
class MoveCommand : public QUndoCommand
{
public:
enum { Id = 1234 };
MoveCommand(DiagramItem *diagramItem, const QPointF &oldPos,
QUndoCommand *parent = 0);
void undo() override;
void redo() override;
bool mergeWith(const QUndoCommand *command) override;
int id() const override { return Id; }
private:
DiagramItem *myDiagramItem;
QPointF myOldPos;
QPointF newPos;
};
//! [0]
//! [1]
class DeleteCommand : public QUndoCommand
{
public:
explicit DeleteCommand(QGraphicsScene *graphicsScene, QUndoCommand *parent = 0);
void undo() override;
void redo() override;
private:
DiagramItem *myDiagramItem;
QGraphicsScene *myGraphicsScene;
};
//! [1]
//! [2]
class AddCommand : public QUndoCommand
{
public:
AddCommand(DiagramItem::DiagramType addType, QGraphicsScene *graphicsScene,
QUndoCommand *parent = 0);
~AddCommand();
void undo() override;
void redo() override;
private:
DiagramItem *myDiagramItem;
QGraphicsScene *myGraphicsScene;
QPointF initialPosition;
};
//! [2]
QString createCommandString(DiagramItem *item, const QPointF &point);
#endif