Method setupBufferPreviewer

gui/src/widgets/plotbufferpreviewer.cpp:51–92

void PlotBufferPreviewer::setManualDataLimits(bool enabled) { m_manualDataLimits = enabled; }

void PlotBufferPreviewer::setupBufferPreviewer()
{
	m_bufferPreviewer->setMinimumHeight(20);
	m_bufferPreviewer->setCursorPos(0.5);
	m_bufferPreviewer->setHighlightPos(0.05);
	m_bufferPreviewer->setHighlightWidth(0.2);
	m_bufferPreviewer->setCursorVisible(false);
	m_bufferPreviewer->setWaveformPos(0.1);
	m_bufferPreviewer->setWaveformWidth(0.5);

	updateDataLimits(m_plot->xAxis()->min(), m_plot->xAxis()->max());

	connect(m_bufferPreviewer, &BufferPreviewer::bufferStartDrag, this, [=]() {
		// reset the buffer preview position to current visible section
		m_lastMin = m_plot->xAxis()->visibleMin();
	});

	connect(m_bufferPreviewer, &BufferPreviewer::bufferMovedBy, this, [=](int bufferPos) {
		double bufferWidth = m_bufferPreviewer->width();
		double axisWidth = m_bufferDataLimitMax - m_bufferDataLimitMin;
		double newAxisPos = bufferPos * axisWidth / bufferWidth;
		double axisOffset = m_lastMin - m_plot->xAxis()->visibleMin();
		if(axisWidth < 0)
			axisOffset *= -1;

		double panAmount = PlotMagnifier::scaleToFactor(newAxisPos + axisOffset, m_plot->xAxis()->axisId(),
								m_plot->plot());

		bool bounded = m_plot->navigator()->isBounded();
		m_plot->navigator()->setBounded(false);
		m_plot->navigator()->forcePan(m_plot->xAxis()->axisId(), panAmount);
		m_plot->navigator()->setBounded(bounded);
		updateBufferPreviewer();
	});

	connect(m_bufferPreviewer, &BufferPreviewer::bufferResetPosition, this, [=]() {
		Q_EMIT m_plot->navigator()->reset();
		updateBufferPreviewer();
	});

	connect(m_plot->navigator(), &PlotNavigator::rectChanged, this, [=]() { updateBufferPreviewer(); });
}

void PlotBufferPreviewer::updateDataLimits(double min, double max)
{