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statistics: render bar and pie labels onto fill color

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The labels in bar an pie charts are realized as individual
QSG pixmap nodes with an alpha channel. Sadly, rendering
bright labels onto a transparent background gives very
ugly artifacts.

As a stop gap measure, until the problem is understood,
render on a background with the color of the pie slice
or bar.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-01-19 16:09:56 +01:00 • committed by bstoeger
parent 2e2019dea7
commit 4f58e9aa62
5 changed files with 29 additions and 19 deletions
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7
stats/chartitem.cpp
View file

@ -242,7 +242,12 @@ ChartTextItem::ChartTextItem(StatsView &v, ChartZValue z, const QFont &f, const
void ChartTextItem::setColor(const QColor &c)
{
img->fill(Qt::transparent);
setColor(c, Qt::transparent);
}
void ChartTextItem::setColor(const QColor &c, const QColor &background)
{
img->fill(background);
double y = 0.0;
painter->setPen(QPen(c));
painter->setFont(f);