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git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1850 b45a01b8-16f6-495d-af2f-9b41ad6348cc
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183
plugins/qdiagram_plugin/diagramitem.cpp
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183
plugins/qdiagram_plugin/diagramitem.cpp
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/****************************************************************************
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**
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** Copyright (C) 2007-2008 Trolltech ASA. All rights reserved.
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**
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** This file is part of the example classes of the Qt Toolkit.
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**
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** This file may be used under the terms of the GNU General Public
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** License versions 2.0 or 3.0 as published by the Free Software
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** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Alternatively you may (at
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** your option) use any later version of the GNU General Public
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** License if such license has been publicly approved by Trolltech ASA
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** (or its successors, if any) and the KDE Free Qt Foundation. In
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** addition, as a special exception, Trolltech gives you certain
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** additional rights. These rights are described in the Trolltech GPL
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** Exception version 1.2, which can be found at
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** http://www.trolltech.com/products/qt/gplexception/ and in the file
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** GPL_EXCEPTION.txt in this package.
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**
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** Please review the following information to ensure GNU General
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** Public Licensing requirements will be met:
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** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
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** you are unsure which license is appropriate for your use, please
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** review the following information:
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** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
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** or contact the sales department at sales@trolltech.com.
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**
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** In addition, as a special exception, Trolltech, as the sole
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** copyright holder for Qt Designer, grants users of the Qt/Eclipse
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** Integration plug-in the right for the Qt/Eclipse Integration to
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** link to functionality provided by Qt Designer and its related
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** libraries.
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**
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** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
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** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
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** granted herein.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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****************************************************************************/
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#include <QtGui>
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#include "diagramitem.h"
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//! [0]
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DiagramItem::DiagramItem(DiagramType diagramType, QMenu *contextMenu,
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QGraphicsItem *parent, QGraphicsScene *scene)
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: QGraphicsPolygonItem(parent, scene)
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{
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myDiagramType = diagramType;
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myContextMenu = contextMenu;
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QPainterPath path;
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switch (myDiagramType) {
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case StartEnd:
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path.moveTo(200, 50);
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path.arcTo(150, 0, 50, 50, 0, 90);
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path.arcTo(50, 0, 50, 50, 90, 90);
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path.arcTo(50, 50, 50, 50, 180, 90);
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path.arcTo(150, 50, 50, 50, 270, 90);
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path.lineTo(200, 25);
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myPolygon = path.toFillPolygon();
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break;
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case Conditional:
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myPolygon << QPointF(-100, 0) << QPointF(0, 100)
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<< QPointF(100, 0) << QPointF(0, -100)
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<< QPointF(-100, 0);
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break;
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case Step:
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myPolygon << QPointF(-100, -100) << QPointF(100, -100)
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<< QPointF(100, 100) << QPointF(-100, 100)
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<< QPointF(-100, -100);
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break;
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default:
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myPolygon << QPointF(-120, -80) << QPointF(-70, 80)
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<< QPointF(120, 80) << QPointF(70, -80)
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<< QPointF(-120, -80);
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break;
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}
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setPolygon(myPolygon);
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setFlag(QGraphicsItem::ItemIsMovable, true);
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setFlag(QGraphicsItem::ItemIsSelectable, true);
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}
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DiagramItem::DiagramItem(QMenu *contextMenu,
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QGraphicsItem *parent, QGraphicsScene *scene)
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: QGraphicsPolygonItem(parent, scene)
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{
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myDiagramType = None;
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myContextMenu = contextMenu;
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setFlag(QGraphicsItem::ItemIsMovable, true);
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setFlag(QGraphicsItem::ItemIsSelectable, true);
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}
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//! [0]
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DiagramItem::DiagramItem(const DiagramItem& diagram)
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{
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QGraphicsPolygonItem(diagram.parentItem(),diagram.scene());
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//QGraphicsPolygonItem(static_cast<QGraphicsPolygonItem>(diagram));
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// copy from general GraphcsItem
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setBrush(diagram.brush());
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setPen(diagram.pen());
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setTransform(diagram.transform());
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// copy DiagramItem
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myDiagramType = diagram.myDiagramType;
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myContextMenu = diagram.myContextMenu;
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QPainterPath path;
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switch (myDiagramType) {
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case StartEnd:
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path.moveTo(200, 50);
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path.arcTo(150, 0, 50, 50, 0, 90);
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path.arcTo(50, 0, 50, 50, 90, 90);
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path.arcTo(50, 50, 50, 50, 180, 90);
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path.arcTo(150, 50, 50, 50, 270, 90);
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path.lineTo(200, 25);
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myPolygon = path.toFillPolygon();
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break;
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case Conditional:
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myPolygon << QPointF(-100, 0) << QPointF(0, 100)
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<< QPointF(100, 0) << QPointF(0, -100)
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<< QPointF(-100, 0);
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break;
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case Step:
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myPolygon << QPointF(-100, -100) << QPointF(100, -100)
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<< QPointF(100, 100) << QPointF(-100, 100)
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<< QPointF(-100, -100);
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break;
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default:
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myPolygon << QPointF(-120, -80) << QPointF(-70, 80)
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<< QPointF(120, 80) << QPointF(70, -80)
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<< QPointF(-120, -80);
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break;
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}
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setPolygon(myPolygon);
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setFlag(QGraphicsItem::ItemIsMovable, true);
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setFlag(QGraphicsItem::ItemIsSelectable, true);
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}
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//! [4]
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QPixmap DiagramItem::image() const
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{
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QPixmap pixmap(250, 250);
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pixmap.fill(Qt::transparent);
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QPainter painter(&pixmap);
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painter.setPen(QPen(Qt::black, 8));
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painter.translate(125, 125);
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painter.drawPolyline(myPolygon);
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return pixmap;
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}
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//! [4]
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//! [5]
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void DiagramItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
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{
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scene()->clearSelection();
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setSelected(true);
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myContextMenu->exec(event->screenPos());
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}
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//! [5]
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//! [6]
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QVariant DiagramItem::itemChange(GraphicsItemChange change,
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const QVariant &value)
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{
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if (change == QGraphicsItem::ItemPositionChange) {
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;
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}
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return value;
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}
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//! [6]
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DiagramItem* DiagramItem::copy()
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{
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DiagramItem* newDiagramItem=new DiagramItem(*this);
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return newDiagramItem;
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}
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