c
复制代码
#include "diagramitem.h"
#include "arrow.h"
#include <QDebug>
#include <QGraphicsScene>
#include <QGraphicsSceneContextMenuEvent>
#include <QMenu>
#include <QPainter>
//! [0]
DiagramItem::DiagramItem(DiagramType diagramType, QMenu *contextMenu,
QGraphicsItem *parent,MODE opMode)
: QGraphicsPathItem(parent)
{
myDiagramType = diagramType;
myContextMenu = contextMenu;
normallyOpen=true;
operationMode=opMode;
QPainterPath path;
QFont diagram_font("Ubuntu Mono Bold",12);
int x=-30,y=0,w=70,h=70;
no_contact.addText(x,y,diagram_font,"---| |---");
no_contact.addRect(-35,-35,70,70);
nc_contact.addText(x,y,diagram_font,"---|/|---");
nc_contact.addRect(-35,-35,70,70);
no_coil.addText(x,y,diagram_font,"---( )---");
no_coil.addRect(-35,-35,70,70);
nc_coil.addText(x,y,diagram_font,"---(/)---");
nc_coil.addRect(-35,-35,70,70);
switch (myDiagramType) {
case DigitalIn0:
path=no_contact;
title="DIN[0]";
break;
case DigitalIn1:
path=no_contact;
title="DIN[1]";
break;
case DigitalIn2:
path=no_contact;
title="DIN[2]";
break;
case DigitalIn3:
path=no_contact;
title="DIN[3]";
break;
case DigitalIn4:
path=no_contact;
myPath=path;
title="DIN[4]";
break;
case DigitalIn5:
path=no_contact;
title="DIN[5]";
break;
case DigitalIn6:
path=no_contact;
title="DIN[6]";
break;
case DigitalIn7:
path=nc_contact;
title="DIN[7]";
break;
case TIM1:
path=no_contact;
title="TIM1";
break;
case CNT1:
path=no_contact;
title="CNT1";
break;
case CNT2:
path=no_contact;
title="CNT2";
break;
case AUX0:
path=no_coil;
title="AUX[0]";
break;
case AUX1:
path=no_coil;
title="AUX[1]";
break;
case AUX2:
path=no_coil;
title="AUX[2]";
break;
case AUX3:
path=no_coil;
title="AUX[3]";
break;
case AUX4:
path=no_coil;
title="AUX[4]";
break;
case AUX5:
path=nc_coil;
title="AUX[5]";
break;
case AUX6:
path=no_coil;
title="AUX[6]";
break;
case AUX7:
path=no_coil;
title="AUX[7]";
break;
case DigitalOut0:
path=no_coil;
title="DOUT[0]";
break;
case DigitalOut1:
path=no_coil;
title="DOUT[1]";
break;
case DigitalOut2:
path=no_coil;
title="DOUT[2]";
break;
case DigitalOut3:
path=no_coil;
title="DOUT[3]";
break;
case DigitalOut4:
path=no_coil;
title="DOUT[4]";
break;
case DigitalOut5:
path=no_coil;
title="DOUT[5]";
break;
case DigitalOut6:
path=no_coil;
title="DOUT[6]";
break;
case DigitalOut7:
path=no_coil;
title="DOUT[7]";
break;
case TIM1EN:
path=no_coil;
title="TIM1EN";
break;
case TIM1STOP:
path=no_coil;
title="TIM1STOP";
break;
case CNT1SET:
path=no_coil;
title="CNT1SET";
break;
case CNT2SET:
path=no_coil;
title="CNT2SET";
break;
case CNT1RESET:
path=no_coil;
title="CNT1RST";
break;
case CNT2RESET:
path=no_coil;
title="CNT2RST";
break;
}
path.addText(QPointF(-32,30),QFont(),title);
myPath=QPainterPath(path);
myPolygon=QPolygonF(QRectF(-35,-35,70,70));
setPen(QPen(Qt::black, 2));
setPath(path);
setFlag(QGraphicsItem::ItemIsMovable, true);
setFlag(QGraphicsItem::ItemIsSelectable, true);
setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
}
DiagramItem::DiagramItem(const DiagramItem &diagramItem)
{
myDiagramType=diagramItem.diagramType();
operationMode=diagramItem.opMode();
title=diagramItem.title;
arrows=diagramItem.arrows;
arrows_in=diagramItem.arrows_in;
arrows_out=diagramItem.arrows_out;
}
//! [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(70, 70);
pixmap.fill(Qt::white);
QPainter painter(&pixmap);
painter.setPen(QPen(Qt::black, 2));
painter.translate(35, 35);
painter.drawPath(myPath);
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]
void DiagramItem::makeInput(){
if(normallyOpen){
myPath=no_contact;
}
else{
myPath=nc_contact;
}
myPath.addText(QPointF(-32,30),QFont(),title);
setPath(myPath);
}
void DiagramItem::makeOutput(){
if(normallyOpen){
myPath=no_coil;
}
else{
myPath=nc_coil;
}
myPath.addText(QPointF(-32,30),QFont(),title);
setPath(myPath);
}
bool DiagramItem::operator==(DiagramItem &item)
{
return myDiagramType==item.diagramType();
}
QString DiagramItem::operator<<(DiagramItem &item)
{
return item.title;
}
