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50
51#ifndef COMMANDS_H
52#define COMMANDS_H
53
54#include <QUndoCommand>
55#include "document.h"
56
57class AddShapeCommand : public QUndoCommand
58{
59public:
60 AddShapeCommand(Document *doc, const Shape &shape,
61 QUndoCommand *parent = nullptr);
62 void undo() override;
63 void redo() override;
64
65private:
66 Document *m_doc;
67 Shape m_shape;
68 QString m_shapeName;
69};
70
71class RemoveShapeCommand : public QUndoCommand
72{
73public:
74 RemoveShapeCommand(Document *doc, const QString &shapeName,
75 QUndoCommand *parent = nullptr);
76 void undo() override;
77 void redo() override;
78
79private:
80 Document *m_doc;
81 Shape m_shape;
82 QString m_shapeName;
83};
84
85class SetShapeColorCommand : public QUndoCommand
86{
87public:
88 SetShapeColorCommand(Document *doc, const QString &shapeName,
89 const QColor &color, QUndoCommand *parent = nullptr);
90
91 void undo() override;
92 void redo() override;
93
94 bool mergeWith(const QUndoCommand *command) override;
95 int id() const override;
96
97private:
98 Document *m_doc;
99 QString m_shapeName;
100 QColor m_oldColor;
101 QColor m_newColor;
102};
103
104class SetShapeRectCommand : public QUndoCommand
105{
106public:
107 SetShapeRectCommand(Document *doc, const QString &shapeName,
108 const QRect &rect, QUndoCommand *parent = nullptr);
109
110 void undo() override;
111 void redo() override;
112
113 bool mergeWith(const QUndoCommand *command) override;
114 int id() const override;
115
116private:
117 Document *m_doc;
118 QString m_shapeName;
119 QRect m_oldRect;
120 QRect m_newRect;
121};
122
123#endif // COMMANDS_H
124

source code of qtbase/examples/widgets/tools/undo/commands.h