Hi there,
I'm trying to add a QGraphicsSimpleTextItem as a child of another (shape) item.
I want the text to not follow scaling of the view (I use
QGraphicsItem::ItemIgnoreTransformations flag), *and* be always
centered on it's parent shape.
Ideally, i'm looking at a solution that doesn't require to create a
custom QGItem.
My problem is the centering of the text item itself, without
centering, here is what i do:
------------------------------------------------------------------------------------------
auto item = new ...
...
auto text = new QGraphicsSimpleTextItem(item);
text->setText(...);
text->setFlag(QGraphicsItem::ItemIgnoresTransformations);
auto itemCenter = QPointF(item->boundingRect().width()/2.0,
item->boundingRect().height()/2.0);
text->setPos(itemCenter);
------------------------------------------------------------------------------------------
This work fine, but (as expected) the top-left of the text is
positioned on the center of the parent item.
To center-align, I tried:
-------------------------------------------------------------------------------------------
auto textCenter = QPointF(text->boundingRect().width()/2.0,
text->boundingRect().height()/2.0);
text->setTransform(QTransform::fromTranslate(-textCenter.x, -textCenter));
-------------------------------------------------------------------------------------------
But this doesn't work because textCenter is an offset in a coordinate
system that doesn't follow view scaling... and the text transform
seems to be applied in the "scaled space".
Basically my problem is that it seems that I need a dynamic
positioning wrt the parent that depends on the view transform...
Does anyone know some tricks on how to achieve this?
Thanks,
Chris
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