47 lines
963 B
C
47 lines
963 B
C
|
/**
|
||
|
|
*\file operationCommand.h
|
||
|
|
*
|
||
|
|
*\brief 用来实现“撤销/重做”的操作指令,继承自QUndoCommand
|
||
|
|
*
|
||
|
|
*\author dsc
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef OPERATIONCOMMAND_H
|
||
|
|
#define OPERATIONCOMMAND_H
|
||
|
|
|
||
|
|
#include <QUndoCommand>
|
||
|
|
#include <QGraphicsScene>
|
||
|
|
|
||
|
|
class AddItemCommand : public QUndoCommand
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
explicit AddItemCommand(QGraphicsItem* item, QGraphicsScene* graphicsScene, QUndoCommand* parent = 0);
|
||
|
|
~AddItemCommand();
|
||
|
|
|
||
|
|
public:
|
||
|
|
void undo() override;
|
||
|
|
void redo() override;
|
||
|
|
|
||
|
|
private:
|
||
|
|
QGraphicsItem* m_pItem;
|
||
|
|
QPointF m_itemPos;
|
||
|
|
QGraphicsScene* m_pGraphicsScene;
|
||
|
|
};
|
||
|
|
|
||
|
|
class DeleteItemCommand : public QUndoCommand
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
explicit DeleteItemCommand(QGraphicsScene* graphicsScene, QUndoCommand* parent = 0);
|
||
|
|
~DeleteItemCommand();
|
||
|
|
|
||
|
|
public:
|
||
|
|
void undo() override;
|
||
|
|
void redo() override;
|
||
|
|
|
||
|
|
private:
|
||
|
|
QList<QGraphicsItem*> m_listItem;
|
||
|
|
QGraphicsScene* m_pGraphicsScene;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|