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50
51#ifndef COMMANDS_H
52#define COMMANDS_H
53
54#include <QUndoCommand>
55
56#include "diagramitem.h"
57
58//! [0]
59class MoveCommand : public QUndoCommand
60{
61public:
62 enum { Id = 1234 };
63
64 MoveCommand(DiagramItem *diagramItem, const QPointF &oldPos,
65 QUndoCommand *parent = nullptr);
66
67 void undo() override;
68 void redo() override;
69 bool mergeWith(const QUndoCommand *command) override;
70 int id() const override { return Id; }
71
72private:
73 DiagramItem *myDiagramItem;
74 QPointF myOldPos;
75 QPointF newPos;
76};
77//! [0]
78
79//! [1]
80class DeleteCommand : public QUndoCommand
81{
82public:
83 explicit DeleteCommand(QGraphicsScene *graphicsScene, QUndoCommand *parent = nullptr);
84
85 void undo() override;
86 void redo() override;
87
88private:
89 DiagramItem *myDiagramItem;
90 QGraphicsScene *myGraphicsScene;
91};
92//! [1]
93
94//! [2]
95class AddCommand : public QUndoCommand
96{
97public:
98 AddCommand(DiagramItem::DiagramType addType, QGraphicsScene *graphicsScene,
99 QUndoCommand *parent = nullptr);
100 ~AddCommand();
101
102 void undo() override;
103 void redo() override;
104
105private:
106 DiagramItem *myDiagramItem;
107 QGraphicsScene *myGraphicsScene;
108 QPointF initialPosition;
109};
110//! [2]
111
112QString createCommandString(DiagramItem *item, const QPointF &point);
113
114#endif
115