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