add MapItemBase::renderHints

libs/map/mapview.cpp

@@ -320,8 +320,7 @@ void MapView::drawBackground() {
 
 void MapView::drawItems(QPainter & p) {
 	auto src_tr = p.transform();
-	p.setRenderHint(QPainter::Antialiasing);
-	p.setRenderHint(QPainter::SmoothPixmapTransform);
+	QPainter::RenderHints cur_hints;
 	QPoint mouse        = mapFromGlobal(QCursor::pos());
 	MapItemBase * hover = nullptr;
 	for (auto * i: items_) {
@@ -332,6 +331,10 @@ void MapView::drawItems(QPainter & p) {
 		p.translate(i->m_offset.x(), -i->m_offset.y());
 		p.rotate(i->getRotation());
 		if (!i->ignore_scale) p.scale(i->getScale().x(), i->getScale().y());
+		if (cur_hints != i->renderHints()) {
+			cur_hints = i->renderHints();
+			p.setRenderHints(cur_hints);
+		}
 		i->draw(&p);
 		QTransform mtr;
 		mtr.rotate(-i->getRotation());