65 lines
2.1 KiB
C++
65 lines
2.1 KiB
C++
#include <QPainter>
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#include "graphicsItem/itemPort.h"
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#include "graphicsItem/handleRect.h"
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ItemPort::ItemPort(QGraphicsItem *parent)
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: HandleRect(parent)
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{
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_pos = P_top;
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_ptr = nullptr;
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}
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ItemPort::~ItemPort()
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{
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}
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void ItemPort::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
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{
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Q_UNUSED(option)
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Q_UNUSED(widget)
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painter->setPen(Qt::SolidLine);
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painter->setRenderHint(QPainter::Antialiasing, true);
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QPolygonF Triangle;
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QRectF rec = boundingRect();
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qreal left = rec.left();
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qreal right = rec.right();
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qreal width = rec.width();
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qreal height = rec.height();
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qreal bottom = rec.bottom();
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painter->setBrush(Qt::black);
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if((_pos == P_top && m_type == T_lineIn) || (_pos == P_down && m_type == T_lineOut) ) //从上入或者从下出都是向下
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{
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Triangle.append(QPointF(left,0));
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Triangle.append(QPointF(right,0));
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Triangle.append(QPointF(left+width*0.5,bottom));
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painter->drawPolygon(Triangle);
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}
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else if((_pos == P_top && m_type == T_lineOut) || (_pos == P_down && m_type == T_lineIn) ) //从上出或者从下入都是向上
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{
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Triangle.append(QPointF(left,bottom));
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Triangle.append(QPointF(right,bottom));
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Triangle.append(QPointF(left+width*0.5,0));
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painter->drawPolygon(Triangle);
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}
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else if((_pos == P_left && m_type == T_lineIn) || (_pos == P_right && m_type == T_lineOut) ) //从左入或者从右出都是向右
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{
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Triangle.append(QPointF(0,0));
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Triangle.append(QPointF(0,bottom));
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Triangle.append(QPointF(right,height*0.5));
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painter->drawPolygon(Triangle);
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}
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else if((_pos == P_left && m_type == T_lineOut) || (_pos == P_right && m_type == T_lineIn) ) //从左出或者从右入都是向左
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{
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Triangle.append(QPointF(right,0));
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Triangle.append(QPointF(right,bottom));
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Triangle.append(QPointF(0,height*0.5));
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painter->drawPolygon(Triangle);
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}
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else if(m_type == T_lineInOut)
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{
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painter->drawEllipse(boundingRect().center(), HNDLE_SIZE / 4, HNDLE_SIZE / 4);
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}
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}
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