Home · All Namespaces · All Classes · Main Classes · Grouped Classes · Modules · Functions

commands.h Example File
demos/undo/commands.h

 /****************************************************************************
 **
 ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
 ** Contact: Qt Software Information (qt-info@nokia.com)
 **
 ** This file is part of the demonstration applications of the Qt Toolkit.
 **
 ** Commercial Usage
 ** Licensees holding valid Qt Commercial licenses may use this file in
 ** accordance with the Qt Commercial License Agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and Nokia.
 **
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License versions 2.0 or 3.0 as published by the Free
 ** Software Foundation and appearing in the file LICENSE.GPL included in
 ** the packaging of this file.  Please review the following information
 ** to ensure GNU General Public Licensing requirements will be met:
 ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
 ** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
 ** exception, Nokia gives you certain additional rights. These rights
 ** are described in the Nokia Qt GPL Exception version 1.3, included in
 ** the file GPL_EXCEPTION.txt in this package.
 **
 ** Qt for Windows(R) Licensees
 ** As a special exception, Nokia, as the sole copyright holder for Qt
 ** Designer, grants users of the Qt/Eclipse Integration plug-in the
 ** right for the Qt/Eclipse Integration to link to functionality
 ** provided by Qt Designer and its related libraries.
 **
 ** If you are unsure which license is appropriate for your use, please
 ** contact the sales department at qt-sales@nokia.com.
 **
 ****************************************************************************/

 #ifndef COMMANDS_H
 #define COMMANDS_H

 #include <QUndoCommand>
 #include "document.h"

 class AddShapeCommand : public QUndoCommand
 {
 public:
     AddShapeCommand(Document *doc, const Shape &shape, QUndoCommand *parent = 0);
     void undo();
     void redo();

 private:
     Document *m_doc;
     Shape m_shape;
     QString m_shapeName;
 };

 class RemoveShapeCommand : public QUndoCommand
 {
 public:
     RemoveShapeCommand(Document *doc, const QString &shapeName, QUndoCommand *parent = 0);
     void undo();
     void redo();

 private:
     Document *m_doc;
     Shape m_shape;
     QString m_shapeName;
 };

 class SetShapeColorCommand : public QUndoCommand
 {
 public:
     SetShapeColorCommand(Document *doc, const QString &shapeName, const QColor &color,
                             QUndoCommand *parent = 0);

     void undo();
     void redo();

     bool mergeWith(const QUndoCommand *command);
     int id() const;

 private:
     Document *m_doc;
     QString m_shapeName;
     QColor m_oldColor;
     QColor m_newColor;
 };

 class SetShapeRectCommand : public QUndoCommand
 {
 public:
     SetShapeRectCommand(Document *doc, const QString &shapeName, const QRect &rect,
                             QUndoCommand *parent = 0);

     void undo();
     void redo();

     bool mergeWith(const QUndoCommand *command);
     int id() const;

 private:
     Document *m_doc;
     QString m_shapeName;
     QRect m_oldRect;
     QRect m_newRect;
 };

 #endif // COMMANDS_H