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Diffstat (limited to 'examples/widgets/tools/undoframework/commands.h')
-rw-r--r-- | examples/widgets/tools/undoframework/commands.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/examples/widgets/tools/undoframework/commands.h b/examples/widgets/tools/undoframework/commands.h new file mode 100644 index 0000000000..7318668285 --- /dev/null +++ b/examples/widgets/tools/undoframework/commands.h @@ -0,0 +1,104 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 = 0); + + void undo(); + void redo(); + bool mergeWith(const QUndoCommand *command); + int id() const { return Id; } + +private: + DiagramItem *myDiagramItem; + QPointF myOldPos; + QPointF newPos; +}; +//! [0] + +//! [1] +class DeleteCommand : public QUndoCommand +{ +public: + explicit DeleteCommand(QGraphicsScene *graphicsScene, QUndoCommand *parent = 0); + + void undo(); + void redo(); + +private: + DiagramItem *myDiagramItem; + QGraphicsScene *myGraphicsScene; +}; +//! [1] + +//! [2] +class AddCommand : public QUndoCommand +{ +public: + AddCommand(DiagramItem::DiagramType addType, QGraphicsScene *graphicsScene, + QUndoCommand *parent = 0); + ~AddCommand(); + + void undo(); + void redo(); + +private: + DiagramItem *myDiagramItem; + QGraphicsScene *myGraphicsScene; + QPointF initialPosition; +}; +//! [2] + +QString createCommandString(DiagramItem *item, const QPointF &point); + +#endif |