Qt Reference Documentation

diagramitem.h Example File

graphicsview/diagramscene/diagramitem.h
 /****************************************************************************
 **
 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation ([email protected])
 **
 ** 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 Nokia Corporation 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 DIAGRAMITEM_H
 #define DIAGRAMITEM_H

 #include <QGraphicsPixmapItem>
 #include <QList>

 class QPixmap;
 class QGraphicsItem;
 class QGraphicsScene;
 class QTextEdit;
 class QGraphicsSceneMouseEvent;
 class QMenu;
 class QGraphicsSceneContextMenuEvent;
 class QPainter;
 class QStyleOptionGraphicsItem;
 class QWidget;
 class QPolygonF;

 class Arrow;

 class DiagramItem : public QGraphicsPolygonItem
 {
 public:
     enum { Type = UserType + 15 };
     enum DiagramType { Step, Conditional, StartEnd, Io };

     DiagramItem(DiagramType diagramType, QMenu *contextMenu,
         QGraphicsItem *parent = 0, QGraphicsScene *scene = 0);

     void removeArrow(Arrow *arrow);
     void removeArrows();
     DiagramType diagramType() const
         { return myDiagramType; }
     QPolygonF polygon() const
         { return myPolygon; }
     void addArrow(Arrow *arrow);
     QPixmap image() const;
     int type() const
         { return Type;}

 protected:
     void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
     QVariant itemChange(GraphicsItemChange change, const QVariant &value);

 private:
     DiagramType myDiagramType;
     QPolygonF myPolygon;
     QMenu *myContextMenu;
     QList<Arrow *> arrows;
 };

 #endif
X

Thank you for giving your feedback.

Make sure it is related to this specific page. For more general bugs and requests, please use the Qt Bug Tracker.