806dda08d6
Updated those .qdoc files to refer to the new relative examples emplacement. Images and snippets to be moved later. Also grouped all widgets related examples under widgets. Change-Id: Ib29696e2d8948524537f53e8dda88f9ee26a597f Reviewed-by: J-P Nurmi <j-p.nurmi@nokia.com>
153 lines
4.7 KiB
C++
153 lines
4.7 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/
|
|
**
|
|
** 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."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include <QtWidgets>
|
|
|
|
#include "diagramitem.h"
|
|
#include "arrow.h"
|
|
|
|
//! [0]
|
|
DiagramItem::DiagramItem(DiagramType diagramType, QMenu *contextMenu,
|
|
QGraphicsItem *parent)
|
|
: QGraphicsPolygonItem(parent)
|
|
{
|
|
myDiagramType = diagramType;
|
|
myContextMenu = contextMenu;
|
|
|
|
QPainterPath path;
|
|
switch (myDiagramType) {
|
|
case StartEnd:
|
|
path.moveTo(200, 50);
|
|
path.arcTo(150, 0, 50, 50, 0, 90);
|
|
path.arcTo(50, 0, 50, 50, 90, 90);
|
|
path.arcTo(50, 50, 50, 50, 180, 90);
|
|
path.arcTo(150, 50, 50, 50, 270, 90);
|
|
path.lineTo(200, 25);
|
|
myPolygon = path.toFillPolygon();
|
|
break;
|
|
case Conditional:
|
|
myPolygon << QPointF(-100, 0) << QPointF(0, 100)
|
|
<< QPointF(100, 0) << QPointF(0, -100)
|
|
<< QPointF(-100, 0);
|
|
break;
|
|
case Step:
|
|
myPolygon << QPointF(-100, -100) << QPointF(100, -100)
|
|
<< QPointF(100, 100) << QPointF(-100, 100)
|
|
<< QPointF(-100, -100);
|
|
break;
|
|
default:
|
|
myPolygon << QPointF(-120, -80) << QPointF(-70, 80)
|
|
<< QPointF(120, 80) << QPointF(70, -80)
|
|
<< QPointF(-120, -80);
|
|
break;
|
|
}
|
|
setPolygon(myPolygon);
|
|
setFlag(QGraphicsItem::ItemIsMovable, true);
|
|
setFlag(QGraphicsItem::ItemIsSelectable, true);
|
|
setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
|
|
}
|
|
//! [0]
|
|
|
|
//! [1]
|
|
void DiagramItem::removeArrow(Arrow *arrow)
|
|
{
|
|
int index = arrows.indexOf(arrow);
|
|
|
|
if (index != -1)
|
|
arrows.removeAt(index);
|
|
}
|
|
//! [1]
|
|
|
|
//! [2]
|
|
void DiagramItem::removeArrows()
|
|
{
|
|
foreach (Arrow *arrow, arrows) {
|
|
arrow->startItem()->removeArrow(arrow);
|
|
arrow->endItem()->removeArrow(arrow);
|
|
scene()->removeItem(arrow);
|
|
delete arrow;
|
|
}
|
|
}
|
|
//! [2]
|
|
|
|
//! [3]
|
|
void DiagramItem::addArrow(Arrow *arrow)
|
|
{
|
|
arrows.append(arrow);
|
|
}
|
|
//! [3]
|
|
|
|
//! [4]
|
|
QPixmap DiagramItem::image() const
|
|
{
|
|
QPixmap pixmap(250, 250);
|
|
pixmap.fill(Qt::transparent);
|
|
QPainter painter(&pixmap);
|
|
painter.setPen(QPen(Qt::black, 8));
|
|
painter.translate(125, 125);
|
|
painter.drawPolyline(myPolygon);
|
|
|
|
return pixmap;
|
|
}
|
|
//! [4]
|
|
|
|
//! [5]
|
|
void DiagramItem::contextMenuEvent(QGraphicsSceneContextMenuEvent *event)
|
|
{
|
|
scene()->clearSelection();
|
|
setSelected(true);
|
|
myContextMenu->exec(event->screenPos());
|
|
}
|
|
//! [5]
|
|
|
|
//! [6]
|
|
QVariant DiagramItem::itemChange(GraphicsItemChange change,
|
|
const QVariant &value)
|
|
{
|
|
if (change == QGraphicsItem::ItemPositionChange) {
|
|
foreach (Arrow *arrow, arrows) {
|
|
arrow->updatePosition();
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
//! [6]
|