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path: root/stats/scatterseries.h
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2021-01-20statistics: pass view to seriesGravatar Berthold Stoeger
The series were passed a pointer to the QGraphicsScene to add their item. In the future these items will be replaced by QSGNodes. To add these, the series need a reference to the StatsView. Therefore pass it in the constructor. Once everything is replaces by QSGNodes, remove the QGraphicsScene member. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-14Silence some compiler warningsGravatar Robert C. Helling
This is what clang suggested in compiler warnings. Signed-off-by: Robert C. Helling <helling@atdotde.de>
2021-01-10statistics: convert chart to QQuickItemGravatar Berthold Stoeger
It turns out that the wrong base class was used for the chart. QQuickWidget can only be used on desktop, not in a mobile UI. Therefore, turn this into a QQuickItem and move the container QQuickWidget into desktop-only code. Currently, this code is insane: The chart is rendered onto a QGraphicsScene (as it was before), which is then rendered into a QImage, which is transformed into a QSGTexture, which is then projected onto the device. This is performed on every mouse move event, since these events in general change the position of the info-box. The plan is to slowly convert elements such as the info-box into QQuickItems. Browsing the QtQuick documentation, this will not be much fun. Also note that the rendering currently tears, flickers and has antialiasing artifacts, most likely owing to integer (QImage) to floating point (QGraphicsScene, QQuickItem) conversion problems. The data flow is QGraphicsScene (float) -> QImage (int) -> QQuickItem (float). Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2021-01-06statistics: replace QtCharts' axesGravatar Berthold Stoeger
Replace by custom implementation, with the ultimate goal to remove the QtCharts module. This doesn't yet display axis titles or a grid. Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-02statistics: implement scatter seriesGravatar Berthold Stoeger
Implement a simple scatter series for plotting two numerical variables agains each other. Since the scatter symbols may overlap, on hover multiple dives are shown in the information box. If the box would become too large, only the first few dives are shown followed by "and X more". Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>