Expose Element.posX & Element.posY values to plugins
A method is needed for plugins to accurate locate laid out positioning for elements like grace notes so that other information like STAFF_TEXT can be visually placed properly.
One example for this need is to position a tin whistle finger hole pattern directly under
a grace note.
Another example is to place note names properly using MuseScore's shipped notename.qml plugin.
Heuristic approaches just don't work well. Here is what the tin-whistle-tab.qml produces when heuristics are used and the score was manually edited for irregular rendering:
Here is the same score using exposed
element.pos information to position the tab images: