void QGraph::DrawCurve(int nIndex, QPainter &painter)
{
painter.save();
static double scaley;
static int i, ptside;
static QPoint From, To, Min, Max;
static QRect rViewRect;
ptside = 2;
CCurve* pCurve = GetCurve(nIndex);
scaley = m_scaley;
QBrush FillBrush(m_BkColor);
painter.setBrush(FillBrush);
QPen CurvePen(pCurve->GetColor());
CurvePen.setStyle(GetStyle(pCurve->GetStyle()));
CurvePen.setWidth((int)pCurve->GetWidth());
painter.setPen(CurvePen);
Min.setX(int(xmin/m_scalex) +m_ptoffset.x());
Min.setY(int(ymin/scaley) +m_ptoffset.y());
Max.setX(int(xmax/m_scalex) +m_ptoffset.x());
Max.setY(int(ymax/scaley) +m_ptoffset.y());
rViewRect.setTopLeft(Min);
rViewRect.setBottomRight(Max);
if(pCurve->n>=1)
{
From.setX(int(pCurve->x[0]/m_scalex+m_ptoffset.x()));
From.setY(int(pCurve->y[0]/scaley +m_ptoffset.y()));
if(pCurve->IsVisible())
{
for (i=1; i<pCurve->n;i++)
{
To.setX(int(pCurve->x[i]/m_scalex+m_ptoffset.x()));
To.setY(int(pCurve->y[i]/scaley +m_ptoffset.y()));
painter.drawLine(From, To);
From = To;
}
}
if(pCurve->PointsVisible())
{
for (i=0; i<pCurve->n;i++)
{
if(pCurve->GetSelected() !=i)
painter.drawRect(int(pCurve->x[i]/m_scalex+m_ptoffset.x())-ptside,
int(pCurve->y[i]/ scaley+m_ptoffset.y())-ptside,
2*ptside,2*ptside);
}
}
}
if(m_bHighlightPoint)
{
int point = pCurve->GetSelected();
if(point>=0)
{
//highlight
QColor HighColor(0,40, 150);
CurvePen.setWidth((int)pCurve->GetWidth());
CurvePen.setColor(HighColor);
painter.setPen(CurvePen);
To.setX(int(pCurve->x[point]/m_scalex+m_ptoffset.x()));
To.setY(int(pCurve->y[point]/scaley +m_ptoffset.y()));
painter.drawRect(To.x()-ptside-1,To.y()-ptside-1, 2*(ptside+1),2*(ptside+1));
}
}
painter.restore();
}
