ModelEdit window splitted (one file per tab). Templates/Wizard still have to be re-introduced, but in a menu instead of a Model tab
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Bertrand Songis
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QGraphicsScene>
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#include <QGraphicsSceneMouseEvent>
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#include <QPainter>
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#include <QStyleOption>
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#include "edge.h"
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#include "node.h"
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Node::Node():
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minX(-100),
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maxX(+100)
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{
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setFlag(ItemIsMovable);
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setFlag(ItemSendsGeometryChanges);
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setCacheMode(DeviceCoordinateCache);
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setZValue(-1);
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nodecolor = QColor(Qt::yellow);
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bPressed = false;
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centerX = true;
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centerY = true;
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fixedX = false;
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fixedY = false;
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ballSize = DEFAULT_BALL_SIZE;
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}
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void Node::addEdge(Edge *edge)
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{
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edgeList << edge;
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edge->adjust();
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}
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void Node::stepToCenter(qreal step)
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{
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if(scene() && !bPressed)
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{
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QRectF qr = scene()->sceneRect();
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qreal xStep = qr.width()/step;
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qreal yStep = qr.height()/step;
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QPointF p = pos();
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if(centerX)
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{
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qreal x = qr.right() - qr.width()/2;
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if(abs(x-p.x())>xStep)
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p.rx() += p.x()>x ? -xStep : xStep;
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else
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p.rx() = x;
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}
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if(centerY)
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{
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qreal y = qr.bottom() - qr.height()/2;
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if(abs(y-p.y())>yStep)
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p.ry() += p.y()>y ? -yStep : yStep;
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else
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p.ry() = y;
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}
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setPos(p);
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}
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}
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void Node::setColor(const QColor & color)
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{
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nodecolor=color;
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}
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void Node::setBallSize(int size)
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{
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if(size>2) ballSize = size;
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}
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qreal Node::getX()
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{
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if(scene())
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{
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QRectF rect = scene()->sceneRect();
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return 1+((x()-rect.right())*2/rect.width());
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}
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return 0;
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}
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qreal Node::getY()
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{
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if(scene())
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{
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QRectF rect = scene()->sceneRect();
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return 1+((y()-rect.bottom())*2/rect.height());
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}
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return 0;
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}
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QList<Edge *> Node::edges() const
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{
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return edgeList;
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}
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QRectF Node::boundingRect() const
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{
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qreal adjust = 2;
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return QRectF(-ballSize/2 - adjust, -ballSize/2 - adjust,
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ballSize+BALL_HEIGHT + adjust, ballSize+BALL_HEIGHT + adjust);
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}
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QPainterPath Node::shape() const
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{
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QPainterPath path;
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path.addEllipse(-ballSize/2, -ballSize/2, ballSize, ballSize);
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return path;
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}
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void Node::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *)
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{
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painter->setPen(Qt::NoPen);
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painter->setBrush(Qt::darkGray);
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painter->drawEllipse(-ballSize/2 + BALL_HEIGHT, -ballSize/2 + BALL_HEIGHT, ballSize, ballSize);
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QRadialGradient gradient(-BALL_HEIGHT, -BALL_HEIGHT, ballSize/2);
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if (option->state & QStyle::State_Sunken) {
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gradient.setCenter(BALL_HEIGHT, BALL_HEIGHT);
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gradient.setFocalPoint(BALL_HEIGHT, BALL_HEIGHT);
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gradient.setColorAt(1, nodecolor.light(180));
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gradient.setColorAt(0, nodecolor.light(120));
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} else {
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gradient.setColorAt(0, nodecolor);
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gradient.setColorAt(1, nodecolor.dark(120));
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}
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painter->setBrush(gradient);
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painter->setPen(QPen(Qt::black, 0));
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painter->drawEllipse(-ballSize/2, -ballSize/2, ballSize, ballSize);
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}
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QVariant Node::itemChange(GraphicsItemChange change, const QVariant &value)
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{
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switch (change) {
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case ItemPositionChange:
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if (scene())
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{
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// value is the new position.
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QPointF newPos = value.toPointF();
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QRectF rect = scene()->sceneRect();
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if(fixedX) newPos.setX(x());//make sure x doesn't change
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if(fixedY) newPos.setY(y());//make sure x doesn't change
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newPos.setX(qMin(rect.right(), qMax(newPos.x(), rect.left())));// bound X
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newPos.setY(qMin(rect.bottom(), qMax(newPos.y(), rect.top())));// bound Y
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int newX = -100 + ( (newPos.x()-rect.left()) * 200) / rect.width();
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int newY = 100+(rect.top()-y())*200/rect.height();
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if (newX < minX) newX = minX;
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if (newX > maxX) newX = maxX;
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if (!getFixedX()) {
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newPos.setX(((newX+100)*rect.width()/200+rect.left()));
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}
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emit moved(newX, newY);
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return newPos;
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}
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break;
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case ItemPositionHasChanged:
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foreach (Edge *edge, edgeList)
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edge->adjust();
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break;
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default:
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break;
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};
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return QGraphicsItem::itemChange(change, value);
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}
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void Node::mousePressEvent(QGraphicsSceneMouseEvent *event)
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{
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update();
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bPressed = true;
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QGraphicsItem::mousePressEvent(event);
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emit focus();
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}
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void Node::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
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{
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update();
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bPressed = false;
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if (scene()) {
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QGraphicsItem::mouseReleaseEvent(event);
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emit unfocus();
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}
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else {
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QGraphicsItem::mouseReleaseEvent(event);
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}
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}
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