116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
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#include "baseModelItem/electricBaseModelLineItem.h"
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#include <QGraphicsScene>
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#include <QPainter>
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#include <QStyleOptionGraphicsItem>
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ElectricBaseModelLineItem::ElectricBaseModelLineItem(QGraphicsItem *parent)
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: GraphicsBaseModelItem(parent)
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{
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m_boundingRect = QRectF();
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m_pen = QPen(Qt::black);
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m_brush = QBrush(Qt::NoBrush);
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setHandleVisible(false);
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setFunctionHandleIfShow(false);
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setFunctionHandleEnaable(false);
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m_lstPoints.push_back(QPointF()); //起点
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m_lstPoints.push_back(QPointF()); //终点
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_curLine = QPoint();
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}
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ElectricBaseModelLineItem::~ElectricBaseModelLineItem()
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{
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}
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void ElectricBaseModelLineItem::setStartPoint(const QPointF& p)
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{
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int n = m_lstPoints.size();
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if(n)
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{
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if(n >2)
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{
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if(m_lstPoints[0].x() == m_lstPoints[1].x()) //相邻点在垂直方向，水平移动,否则垂直移动
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{
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m_lstPoints[1].setX(p.x());
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}
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else
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{
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m_lstPoints[1].setY(p.y());
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}
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}
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m_lstPoints[0] = p;
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}
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}
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void ElectricBaseModelLineItem::setEndPoint(const QPointF& p)
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{
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int n = m_lstPoints.size();
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if(n)
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{
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if(n >2)
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{
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if(m_lstPoints[n-1].x() == m_lstPoints[n-2].x()) //相邻点在垂直方向，水平移动,否则垂直移动
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{
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m_lstPoints[n-2].setX(p.x());
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}
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else
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{
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m_lstPoints[n-2].setY(p.y());
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}
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}
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m_lstPoints[n-1] = p;
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}
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}
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QPainterPath ElectricBaseModelLineItem::shape() const
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{
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QPainterPath path;
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//path.addPath(m_points);
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path.addPath(m_pointsBoundingRect);
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return path;
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}
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QRectF ElectricBaseModelLineItem::boundingRect() const
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{
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return m_boundingRect;
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}
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void ElectricBaseModelLineItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
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{
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if (option->state & QStyle::State_Selected)
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{
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painter->setPen(Qt::red);
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}
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else
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{
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painter->setPen(m_pen);
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}
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painter->setBrush(m_brush);
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painter->drawPath(m_points);
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}
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void ElectricBaseModelLineItem::calculatePath()
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{
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int n = m_lstPoints.size();
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prepareGeometryChange();
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m_points.clear();
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m_pointsBoundingRect.clear();
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if(m_lstPoints.size() == 2 && (m_lstPoints.first().x() != m_lstPoints.last().x()) && (m_lstPoints.first().y() != m_lstPoints.last().y()))
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{
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if(m_lstPoints.first().y() < m_lstPoints.last().y())
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m_lstPoints.insert(1,QPointF(m_lstPoints.first().x(),m_lstPoints.last().y()));
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else
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m_lstPoints.insert(1,QPointF(m_lstPoints.last().x(),m_lstPoints.first().y()));
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}
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m_points.moveTo(m_lstPoints.first());
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QPointF pLast = m_lstPoints.first();
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for(int i = 1;i <m_lstPoints.size();++i)
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{
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m_points.lineTo(m_lstPoints[i]);
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m_pointsBoundingRect.addRect(QRectF(QPointF(pLast.x()-1,pLast.y()-1),QPointF(m_lstPoints[i].x()+1,m_lstPoints[i].y()+1)));
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pLast = m_lstPoints[i];
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}
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m_boundingRect = m_points.boundingRect();
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}
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