Method itemChange

src/backend/datapicker/Segment.cpp:141–184

}

QVariant SegmentPrivate::itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant& value) {
	if (change == QGraphicsItem::ItemSelectedChange && value == true) {
		auto* datapicker = static_cast<Datapicker*>(q->m_image->parentAspect());
		if (datapicker->activeCurve()) {
			int count = 0;
			QList<QPointF> posList;
			posList.clear();
			for (QLine* line : q->path) {
				const int l = (line->y1() > line->y2()) ? line->y2() : line->y1();
				const int h = (line->y1() > line->y2()) ? line->y1() : line->y2();

				for (int i = l; i <= h; ++i) {
					if (count % q->m_image->pointSeparation() == 0) {
						bool positionUsed = false;
						const auto points = datapicker->activeCurve()->children<DatapickerPoint>(AbstractAspect::ChildIndexFlag::IncludeHidden);
						for (const auto* point : points) {
							if (point->position() == QPoint(line->x1(), i) * scaleFactor)
								positionUsed = true;
						}

						if (!positionUsed)
							posList << QPoint(line->x1(), i) * scaleFactor;
					}
					count++;
				}
			}

			if (!posList.isEmpty()) {
				auto* curve = datapicker->activeCurve();
				curve->beginMacro(i18n("%1: draw points over segment", datapicker->activeCurve()->name()));
				curve->suppressUpdatePoint(true);
				for (const QPointF& pos : posList)
					datapicker->addNewPoint(pos, curve);
				curve->suppressUpdatePoint(false);
				curve->endMacro();
			}
		}

		// no need to keep segment selected
		return false;
	}

	return QGraphicsItem::itemChange(change, value);
}