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plotview: Abstract out coord -> sample calculation

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Mike Walters
2016-03-05 16:16:55 +00:00
parent a82a1af33d
commit eaf422165f
2 changed files with 7 additions and 1 deletions
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7
plotview.cpp
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@@ -48,6 +48,11 @@ PlotView::PlotView(InputSource *input) : cursors(this), viewRange({0, 0})
mainSampleSource->subscribe(this);
}
off_t PlotView::coordToSample(int x)
{
return fftSize * x / (int)pow(2, zoomLevel);
}
TracePlot* PlotView::createIQPlot(SampleSource<std::complex<float>> *src)
{
gr::top_block_sptr iq_tb = gr::make_top_block("multiply");
@@ -200,7 +205,7 @@ void PlotView::updateView()
{
viewRange = {
horizontalScrollBar()->value(),
horizontalScrollBar()->value() + fftSize * width() / (int)pow(2, zoomLevel)
horizontalScrollBar()->value() + coordToSample(width())
};
viewport()->update();
}