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cabana: dynamically switch between OpenGL (#27167)

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* cabana: dynamically switch between OpenGL

* put back todo

* only switch when x axis changes
old-commit-hash: 49e955d321aff222665ac89b62d9de0b5d8395d2
This commit is contained in:
Willem Melching
2023-01-31 22:08:07 +01:00
committed by GitHub
parent a68a4979c0
commit d7ce6a56eb
1 changed files with 23 additions and 13 deletions
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tools/cabana/chartswidget.cc
+23 -13
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@@ -358,11 +358,6 @@ void ChartView::setPlotAreaLeftPosition(int pos) {
void ChartView::addSeries(const QString &msg_id, const Signal *sig) {
QLineSeries *series = new QLineSeries(this);
// TODO: Due to a bug in CameraWidget the camera frames
// are drawn instead of the graphs on MacOS. Re-enable OpenGL when fixed
#ifndef __APPLE__
series->setUseOpenGL(true);
#endif
chart()->addSeries(series);
series->attachAxis(axis_x);
series->attachAxis(axis_y);
@@ -476,17 +471,32 @@ void ChartView::updatePlot(double cur, double min, double max) {
if (min != axis_x->min() || max != axis_x->max()) {
axis_x->setRange(min, max);
updateAxisY();
}
// Show points when zoomed in enough
for (auto &s : sigs) {
auto begin = std::lower_bound(s.vals.begin(), s.vals.end(), axis_x->min(), [](auto &p, double x) { return p.x() < x; });
auto end = std::lower_bound(s.vals.begin(), s.vals.end(), axis_x->max(), [](auto &p, double x) { return p.x() < x; });
// Show points when zoomed in enough
for (auto &s : sigs) {
auto begin = std::lower_bound(s.vals.begin(), s.vals.end(), axis_x->min(), [](auto &p, double x) { return p.x() < x; });
auto end = std::lower_bound(s.vals.begin(), s.vals.end(), axis_x->max(), [](auto &p, double x) { return p.x() < x; });
int num_points = std::max<int>(end - begin, 1);
int pixels_per_point = width() / num_points;
int num_points = std::max<int>(end - begin, 1);
int pixels_per_point = width() / num_points;
s.series->setPointsVisible(pixels_per_point > 20);
s.series->setPointsVisible(pixels_per_point > 20);
// TODO: On MacOS QChartWidget doesn't work with the OpenGL settings that CameraWidget needs.
#ifndef __APPLE
// OpenGL mode lacks certain features (such as showing points), only use when drawing many points
bool use_opengl = pixels_per_point < 1;
s.series->setUseOpenGL(use_opengl);
// Qt doesn't properly apply device pixel ratio in OpenGL mode
QApplication* application = static_cast<QApplication *>(QApplication::instance());
float scale = use_opengl ? application->devicePixelRatio() : 1.0;
QPen pen = s.series->pen();
pen.setWidth(2.0 * scale);
s.series->setPen(pen);
#endif
}
}
scene()->invalidate({}, QGraphicsScene::ForegroundLayer);