I am wondering what input field is the best to select the position of a text-layer on an image?
#1
The easiest would be a select options field as dropdown with the options:
north, north-east, east, south-east, south, south-west, west, north-west, center
Or a less compass like version:
top, top-right, right, bottom-right, bottom, bottom-left, left, top-left, center.
#2
Use the focus point of the image, so you can position the layer anywhere, but you lose the ability to really focus on something if the uploaded image has a different ratio than the rendered image in the frontend.
#3
Use RuntimeMarkup (https://modules.processwire.com/modules/fieldtype-runtime-markup/) to display (and eventually even manipulate) the select element from #1. (I did not try this one)
#X
Ist there a more elegant way that offers more visual feedback, like 9 squares (3 columns, 3 rows) with radio buttons or something like that?