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Diffstat (limited to 'examples/graphicsview/diagramscene/arrow.h')
-rw-r--r-- | examples/graphicsview/diagramscene/arrow.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/examples/graphicsview/diagramscene/arrow.h b/examples/graphicsview/diagramscene/arrow.h new file mode 100644 index 0000000000..cc6ff9732d --- /dev/null +++ b/examples/graphicsview/diagramscene/arrow.h @@ -0,0 +1,91 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** 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 ARROW_H +#define ARROW_H + +#include <QGraphicsLineItem> + +#include "diagramitem.h" + +QT_BEGIN_NAMESPACE +class QGraphicsPolygonItem; +class QGraphicsLineItem; +class QGraphicsScene; +class QRectF; +class QGraphicsSceneMouseEvent; +class QPainterPath; +QT_END_NAMESPACE + +//! [0] +class Arrow : public QGraphicsLineItem +{ +public: + enum { Type = UserType + 4 }; + + Arrow(DiagramItem *startItem, DiagramItem *endItem, + QGraphicsItem *parent = 0, QGraphicsScene *scene = 0); + + int type() const + { return Type; } + QRectF boundingRect() const; + QPainterPath shape() const; + void setColor(const QColor &color) + { myColor = color; } + DiagramItem *startItem() const + { return myStartItem; } + DiagramItem *endItem() const + { return myEndItem; } + + void updatePosition(); + +protected: + void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, + QWidget *widget = 0); + +private: + DiagramItem *myStartItem; + DiagramItem *myEndItem; + QColor myColor; + QPolygonF arrowHead; +}; +//! [0] + +#endif |