statistics: replace chart title by QSG node

This one is trivial, since everything is there already:
Replace the QGraphicsSimpleTextItem with a ChartTextItem.
Only few functions have to be renamed.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

2 files changed, 7 insertions, 8 deletions

diff --git a/stats/statsview.cpp b/stats/statsview.cpp
index 5acf3ecaf..efb530e45 100644
--- a/stats/statsview.cpp
+++ b/stats/statsview.cpp
@@ -211,7 +211,7 @@ void StatsView::plotAreaChanged(const QSizeF &s)
 	const double minSize = 30.0;
 
 	if (title)
-		top += title->boundingRect().height() + titleBorder;
+		top += title->getRect().height() + titleBorder;
 	// Currently, we only have either none, or an x- and a y-axis
 	std::pair<double,double> horizontalSpace{ 0.0, 0.0 };
 	if (xAxis) {
@@ -310,17 +310,16 @@ void StatsView::setTitle(const QString &s)
 		title.reset();
 		return;
 	}
-	title = createItemPtr<QGraphicsSimpleTextItem>(&scene, s);
-	title->setFont(titleFont);
+	title = createChartItem<ChartTextItem>(ChartZValue::Legend, titleFont, s);
+	title->setColor(darkLabelColor);
 }
 
 void StatsView::updateTitlePos()
 {
 	if (!title)
 		return;
-	QRectF rect = scene.sceneRect();
-	title->setPos(sceneBorder + (rect.width() - title->boundingRect().width()) / 2.0,
-		      sceneBorder);
+	title->setPos(QPointF(round(sceneBorder + (boundingRect().width() - title->getRect().width()) / 2.0),
+			      round(sceneBorder)));
 }
 
 template <typename T, class... Args>
diff --git a/stats/statsview.h b/stats/statsview.h
index 05893ad33..1736af219 100644
--- a/stats/statsview.h
+++ b/stats/statsview.h
@@ -16,10 +16,10 @@ struct StatsBin;
 struct StatsState;
 struct StatsVariable;
 
-class QGraphicsSimpleTextItem;
 class StatsSeries;
 class CategoryAxis;
 class ChartItem;
+class ChartTextItem;
 class CountAxis;
 class HistogramAxis;
 class HistogramMarker;
@@ -130,7 +130,7 @@ private:
 	std::unique_ptr<Legend> legend;
 	std::vector<std::unique_ptr<QuartileMarker>> quartileMarkers;
 	std::vector<std::unique_ptr<HistogramMarker>> histogramMarkers;
-	std::unique_ptr<QGraphicsSimpleTextItem> title;
+	std::unique_ptr<ChartTextItem> title;
 	std::unique_ptr<RegressionItem> regressionItem;
 	StatsSeries *highlightedSeries;
 	StatsAxis *xAxis, *yAxis;