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statistics: collect colors in a StatsTheme class

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To enable rudimentary theming, collect all colors in a new
theme class. The class has to be passed down to the various
items.

In general the items save a reference to the them in the
constructor. Alternatively, they might also just query
the StatsView everytime they need to access a color.
For now, it's hard the say what is preferred: a reference
per item or a function call per invokation?

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-02-16 17:05:39 +01:00 • committed by Dirk Hohndel
parent 56e02dbcc0
commit b5aac29cea
25 changed files with 272 additions and 166 deletions
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6
stats/regressionitem.cpp
View file

@ -2,6 +2,7 @@
#include "regressionitem.h"
#include "statsaxis.h"
#include "statscolors.h"
#include "statsview.h"
#include "zvalues.h"
#include <cmath>
@ -11,6 +12,7 @@ static const double regressionLineWidth = 2.0;
RegressionItem::RegressionItem(StatsView &view, regression_data reg,
StatsAxis *xAxis, StatsAxis *yAxis) :
ChartPixmapItem(view, ChartZValue::ChartFeatures),
theme(view.getCurrentTheme()),
xAxis(xAxis), yAxis(yAxis), reg(reg),
regression(true), confidence(true)
{
@ -86,7 +88,7 @@ void RegressionItem::updatePosition()
img->fill(Qt::transparent);
if (confidence) {
QColor col(regressionItemColor);
QColor col(theme.regressionItemColor);
col.setAlphaF((float)reg.r2);
painter->setPen(Qt::NoPen);
painter->setBrush(QBrush(col));
@ -94,7 +96,7 @@ void RegressionItem::updatePosition()
}
if (regression) {
painter->setPen(QPen(regressionItemColor, regressionLineWidth));
painter->setPen(QPen(theme.regressionItemColor, regressionLineWidth));
painter->drawLine(QPointF(linePolygon[0]), QPointF(linePolygon[1]));
}