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Spectrum frequency zoom: implemented panning. Implements #773

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This commit is contained in:
f4exb 2021-02-17 07:27:10 +01:00
parent 8f09cdd80e
commit d22bdb3e5e
2 changed files with 23 additions and 0 deletions
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22
sdrgui/gui/glspectrum.cpp
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@ -2211,6 +2211,10 @@ void GLSpectrum::mousePressEvent(QMouseEvent* event)
update();
}
}
else if (event->modifiers() & Qt::AltModifier)
{
frequencyPan(event);
}
if (m_cursorState == CSSplitter)
{
@ -2303,6 +2307,24 @@ void GLSpectrum::frequencyZoom(QWheelEvent *event)
qDebug("GLSpectrum::spectrumZoom: pw: %f p: %f z: %f", pw, m_frequencyZoomPos, m_frequencyZoomFactor);
}
void GLSpectrum::frequencyPan(QMouseEvent *event)
{
if (m_frequencyZoomFactor == 1.0f) {
return;
}
const QPointF& p = event->pos();
float pw = (p.x() - m_leftMargin) / (width() - m_leftMargin - m_rightMargin); // position in window
pw = pw < 0.0f ? 0.0f : pw > 1.0f ? 1.0 : pw;
float dw = pw - 0.5f;
m_frequencyZoomPos += dw * (1.0f / m_frequencyZoomFactor);
float lim = 0.5f / m_frequencyZoomFactor;
m_frequencyZoomPos = m_frequencyZoomPos < lim ? lim : m_frequencyZoomPos > 1 - lim ? 1 - lim : m_frequencyZoomPos;
updateFFTLimits();
qDebug("GLSpectrum::frequencyPan: pw: %f p: %f", pw, m_frequencyZoomPos);
}
void GLSpectrum::resetFrequencyZoom()
{
m_frequencyZoomFactor = 1.0f;

1
sdrgui/gui/glspectrum.h
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@ -350,6 +350,7 @@ private:
void wheelEvent(QWheelEvent*);
void channelMarkerMove(QWheelEvent*, int mul);
void frequencyZoom(QWheelEvent*);
void frequencyPan(QMouseEvent*);
void resetFrequencyZoom();
void updateFFTLimits();
void setFrequencyScale();