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plot: Scrolling again!

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Mike Walters
2016-03-02 23:48:38 +00:00
parent 74aaa9665a
commit a912406fbf
3 changed files with 7 additions and 12 deletions
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14
plotview.cpp
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@@ -20,6 +20,7 @@
#include "plotview.h"
#include <QDebug>
#include <QPainter>
#include <QScrollBar>
#include <gnuradio/top_block.h>
#include <gnuradio/analog/quadrature_demod_cf.h>
#include <gnuradio/blocks/multiply_const_cc.h>
@@ -89,13 +90,9 @@ void PlotView::inputSourceChanged(AbstractSampleSource *src)
mainSampleSource = derived;
refreshSources();
}
void PlotView::viewChanged(off_t firstSample, off_t lastSample)
{
this->firstSample = firstSample;
this->lastSample = lastSample;
update();
horizontalScrollBar()->setMinimum(0);
horizontalScrollBar()->setMaximum(mainSampleSource->count());
}
void PlotView::selectionChanged(std::pair<off_t, off_t> selectionTime, std::pair<float, float> selectionFreq)
@@ -114,7 +111,10 @@ void PlotView::selectionCleared()
void PlotView::paintEvent(QPaintEvent *event)
{
if (lastSample - firstSample <= 0) return;
if (mainSampleSource == nullptr) return;
off_t firstSample = horizontalScrollBar()->value();
// TODO: don't hardcode width
off_t lastSample = firstSample + 10240;
QRect rect = QRect(0, 0, width(), height());
QPainter painter(viewport());