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statistics: paint custom grid

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With removal of QtCharts' axes, the grid was lost. Readd it.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-01-05 13:51:39 +01:00 • committed by Dirk Hohndel
parent 8dfa3f6db3
commit ab324ed769
9 changed files with 81 additions and 0 deletions
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36
stats/statsgrid.cpp Normal file
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// SPDX-License-Identifier: GPL-2.0
#include "statsgrid.h"
#include "statsaxis.h"
#include "statscolors.h"
#include "zvalues.h"
#include <QChart>
#include <QGraphicsLineItem>
static const double gridWidth = 1.0;
static const Qt::PenStyle gridStyle = Qt::SolidLine;
StatsGrid::StatsGrid(QtCharts::QChart *chart, const StatsAxis &xAxis, const StatsAxis &yAxis)
: chart(chart), xAxis(xAxis), yAxis(yAxis)
{
}
void StatsGrid::updatePositions()
{
std::vector<double> xtics = xAxis.ticksPositions();
std::vector<double> ytics = yAxis.ticksPositions();
lines.clear();
if (xtics.empty() || ytics.empty())
return;
for (double x: xtics) {
lines.emplace_back(new QGraphicsLineItem(x, ytics.front(), x, ytics.back(), chart));
lines.back()->setPen(QPen(gridColor, gridWidth, gridStyle));
lines.back()->setZValue(ZValues::grid);
}
for (double y: ytics) {
lines.emplace_back(new QGraphicsLineItem(xtics.front(), y, xtics.back(), y, chart));
lines.back()->setPen(QPen(gridColor, gridWidth, gridStyle));
lines.back()->setZValue(ZValues::grid);
}
}