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statistics: highlight selected pie slices

Browse source 
In analogy to the other charts, highlight selected pie slices.
Overlay them with a checkerboard pattern, like in the bar charts.

Since all charts now support highlighting, the divesSelected()
virtual function now doesn't need a default implementation
anymore.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-02-07 20:48:43 +01:00 • committed by Dirk Hohndel
parent bd252fc820
commit 21b8cded56
6 changed files with 44 additions and 14 deletions
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18
stats/pieseries.cpp
View file

@ -20,7 +20,8 @@ static const double outerLabelRadius = 1.01; // 1.0 = at outer border of pie
PieSeries::Item::Item(StatsView &view, const QString &name, int from, std::vector<dive *> divesIn, int totalCount,
int bin_nr, int numBins) :
name(name),
dives(std::move(divesIn))
dives(std::move(divesIn)),
selected(allDivesSelected(dives))
{
QFont f; // make configurable
QLocale loc;
@ -72,7 +73,7 @@ void PieSeries::Item::highlight(ChartPieItem &item, int bin_nr, bool highlight,
QColor border = highlight ? highlightedBorderColor : ::borderColor;
if (innerLabel)
innerLabel->setColor(highlight ? darkLabelColor : labelColor(bin_nr, numBins), fill);
item.drawSegment(angleFrom, angleTo, fill, border);
item.drawSegment(angleFrom, angleTo, fill, border, selected);
}
PieSeries::PieSeries(StatsView &view, StatsAxis *xAxis, StatsAxis *yAxis, const QString &categoryName,
@ -277,3 +278,16 @@ bool PieSeries::selectItemsUnderMouse(const QPointF &pos, bool)
setSelection(dives, dives.empty() ? nullptr : dives.front());
return true;
}
void PieSeries::divesSelected(const QVector<dive *> &)
{
for (Item &segment: items) {
bool selected = allDivesSelected(segment.dives);
if (segment.selected != selected) {
segment.selected = selected;
int idx = &segment - &items[0];
segment.highlight(*item, idx, idx == highlighted, (int)items.size());
}
}
}