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statistics: convert HistogramMarkers to QSGNodes

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This is in analogy to the quartile markers.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-01-14 09:48:44 +01:00 • committed by bstoeger
parent 790d2b2ddb
commit 218c844ad4
6 changed files with 65 additions and 46 deletions
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29
stats/histogrammarker.cpp Normal file
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// SPDX-License-Identifier: GPL-2.0
#include "histogrammarker.h"
#include "statsaxis.h"
#include "zvalues.h"
static const double histogramMarkerWidth = 2.0;
HistogramMarker::HistogramMarker(StatsView &view, double val, bool horizontal,
QColor color, StatsAxis *xAxis, StatsAxis *yAxis) :
ChartLineItem(view, ChartZValue::ChartFeatures, color, histogramMarkerWidth),
xAxis(xAxis), yAxis(yAxis),
val(val), horizontal(horizontal)
{
}
void HistogramMarker::updatePosition()
{
if (!xAxis || !yAxis)
return;
if (horizontal) {
double y = yAxis->toScreen(val);
auto [x1, x2] = xAxis->minMaxScreen();
setLine(QPointF(x1, y), QPointF(x2, y));
} else {
double x = xAxis->toScreen(val);
auto [y1, y2] = yAxis->minMaxScreen();
setLine(QPointF(x, y1), QPointF(x, y2));
}
}