qt 6.5.1 original

examples/widgets/tools/undoframework/commands.h

@@ -0,0 +1,67 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+#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 = nullptr);
+
+    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 = nullptr);
+
+    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 = nullptr);
+    ~AddCommand();
+
+    void undo() override;
+    void redo() override;
+
+private:
+    DiagramItem *myDiagramItem;
+    QGraphicsScene *myGraphicsScene;
+    QPointF initialPosition;
+};
+//! [2]
+
+QString createCommandString(DiagramItem *item, const QPointF &point);
+
+#endif