1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the examples of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:BSD$ 9 ** You may use this file under the terms of the BSD license as follows: 10 ** 11 ** "Redistribution and use in source and binary forms, with or without 12 ** modification, are permitted provided that the following conditions are 13 ** met: 14 ** * Redistributions of source code must retain the above copyright 15 ** notice, this list of conditions and the following disclaimer. 16 ** * Redistributions in binary form must reproduce the above copyright 17 ** notice, this list of conditions and the following disclaimer in 18 ** the documentation and/or other materials provided with the 19 ** distribution. 20 ** * Neither the name of The Qt Company Ltd nor the names of its 21 ** contributors may be used to endorse or promote products derived 22 ** from this software without specific prior written permission. 23 ** 24 ** 25 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." 36 ** 37 ** $QT_END_LICENSE$ 38 ** 39 ****************************************************************************/ 40 41 #ifndef DIAGRAMITEM_H 42 #define DIAGRAMITEM_H 43 44 #include <QGraphicsPixmapItem> 45 #include <QList> 46 47 QT_BEGIN_NAMESPACE 48 class QPixmap; 49 class QGraphicsItem; 50 class QGraphicsScene; 51 class QTextEdit; 52 class QGraphicsSceneMouseEvent; 53 class QMenu; 54 class QGraphicsSceneContextMenuEvent; 55 class QPainter; 56 class QStyleOptionGraphicsItem; 57 class QWidget; 58 class QPolygonF; 59 QT_END_NAMESPACE 60 61 class Arrow; 62 63 //! [0] 64 class DiagramItem : public QGraphicsPolygonItem 65 { 66 public: 67 enum { Type = UserType + 15 }; 68 enum DiagramType { Step, Conditional, StartEnd, Io }; 69 70 DiagramItem(DiagramType diagramType, QMenu *contextMenu, 71 QGraphicsItem *parent = 0, QGraphicsScene *scene = 0); 72 73 void removeArrow(Arrow *arrow); 74 void removeArrows(); diagramType()75 DiagramType diagramType() const 76 { return myDiagramType; } polygon()77 QPolygonF polygon() const 78 { return myPolygon; } 79 void addArrow(Arrow *arrow); 80 QPixmap image() const; type()81 int type() const 82 { return Type;} 83 84 protected: 85 void contextMenuEvent(QGraphicsSceneContextMenuEvent *event); 86 QVariant itemChange(GraphicsItemChange change, const QVariant &value); 87 88 private: 89 DiagramType myDiagramType; 90 QPolygonF myPolygon; 91 QMenu *myContextMenu; 92 QList<Arrow *> arrows; 93 }; 94 //! [0] 95 96 #endif 97