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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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6
stats/barseries.h
View file

@ -11,6 +11,7 @@
#include <memory>
#include <vector>
#include <QColor>
#include <QRectF>
class ChartBarItem;
@ -86,8 +87,8 @@ private:
bool isOutside; // Is shown outside of bar
BarLabel(StatsView &view, const std::vector<QString> &labels, int bin_nr, int binCount);
void setVisible(bool visible);
void updatePosition(bool horizontal, bool center, const QRectF &rect, int bin_nr, int binCount);
void highlight(bool highlight, int bin_nr, int binCount);
void updatePosition(bool horizontal, bool center, const QRectF &rect, int bin_nr, int binCount, const QColor &background);
void highlight(bool highlight, int bin_nr, int binCount, const QColor &background);
};
struct SubItem {
@ -96,6 +97,7 @@ private:
double value_from;
double value_to;
int bin_nr;
QColor fill;
void updatePosition(BarSeries *series, bool horizontal, bool stacked,
double from, double to, int binCount);
void highlight(bool highlight, int binCount);