69 lines
1.6 KiB
C++
Executable File
69 lines
1.6 KiB
C++
Executable File
#include "signaldisplay.h"
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#include <QtGui>
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#include <QDebug>
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SignalDisplay::SignalDisplay(QWidget *&parent):QWidget(parent)
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{
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secsPerDiv = 1.0/600.0;
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voltsPerDiv = 20;
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numSig=2;
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setPointsPerPlot(10);
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}
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void SignalDisplay::setNumSig(int value)
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{
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numSig = value;
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setPointsPerPlot(pointsPerPlot);
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}
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void SignalDisplay::setPointsPerPlot(int value)
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{
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pointsPerPlot = value;
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waves = new QPoint *[numSig];
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secsIdx=new int[numSig];
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colorTraces = new QColor[numSig];
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int numT=(255/(numSig+1));
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for(int i=0;i<numSig;i++)
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{
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waves[i] = new QPoint [pointsPerPlot];
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secsIdx[i]=0;
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colorTraces[i]=qRgb(numT*(i%numSig),numT*(i%numSig),numT*(i%numSig));
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}
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}
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void SignalDisplay::drawGrid(QPainter &p, QColor colorGrid, int x, int y, int w, int h, int nx, int ny){
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p.setPen(colorGrid);
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for (int ix= 0; ix<nx; ix++){
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int x = ix*w/nx;
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p.drawLine(x,0,x,h);
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}
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for (int iy = 0; iy < ny; iy++){
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int y = iy*h/ny;
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p.drawLine(0,y,w,y);
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}
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}
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void SignalDisplay::paintEvent(QPaintEvent *event){
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QPainter painter(this);
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w = width();
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h = height();
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ox = w;
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oy = h;
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painter.fillRect(0,0,w,h,Qt::white);
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drawGrid(painter, Qt::lightGray,0,0,w,h,5, 10);
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for(int i=0; i<numSig; i++)
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{
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painter.setPen(colorTraces[i]);
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painter.drawPolyline(waves[i],pointsPerPlot);
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}
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}
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void SignalDisplay::addPoints(int idx, int value)
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{
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waves[idx][secsIdx[idx]] = QPoint(secsIdx[idx]*w/10/60.0/pointsPerPlot/secsPerDiv+w/(2*pointsPerPlot), \
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oy-value*h/voltsPerDiv/10);
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secsIdx[idx] = (secsIdx[idx]+1) % pointsPerPlot;
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}
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//EOF
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