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Correct the placement of vertical grid lines when start freq is nonzero.

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git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@4717 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2014-12-01 21:38:48 +00:00
parent f8e51d4e62
commit aeacca68a9
1 changed files with 15 additions and 14 deletions
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29
plotter.cpp
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@ -195,24 +195,25 @@ void CPlotter::DrawOverlay() //DrawOverlay()
pixperdiv = m_freqPerDiv/df;
y = m_h2 - m_h2/VERT_DIVS;
m_hdivs = w*df/m_freqPerDiv + 0.9999;
for( int i=1; i<m_hdivs; i++) //draw vertical grids
{
x = (int)( (float)i*pixperdiv );
if(x >= 0 and x<=m_w) {
painter.setPen(QPen(Qt::white, 1,Qt::DotLine));
painter.drawLine(x, 0, x , y);
painter.drawLine(x, m_h2-5, x , m_h2);
}
m_hdivs = w*df/m_freqPerDiv + 1.9999;
float xx0=float(m_startFreq)/float(m_freqPerDiv);
xx0=xx0-int(xx0);
int x0=xx0*pixperdiv+0.5;
for( int i=1; i<m_hdivs; i++) { //draw vertical grids
x = (int)((float)i*pixperdiv ) - x0;
if(x >= 0 and x<=m_w) {
painter.setPen(QPen(Qt::white, 1,Qt::DotLine));
painter.drawLine(x, 0, x , y);
painter.drawLine(x, m_h2-5, x , m_h2);
}
}
pixperdiv = (float)m_h2 / (float)VERT_DIVS;
painter.setPen(QPen(Qt::white, 1,Qt::DotLine));
for( int i=1; i<VERT_DIVS; i++) //draw horizontal grids
{
y = (int)( (float)i*pixperdiv );
painter.drawLine(0, y, w, y);
}
for( int i=1; i<VERT_DIVS; i++) { //draw horizontal grids
y = (int)( (float)i*pixperdiv );
painter.drawLine(0, y, w, y);
}
}
QRect rect0;