ascent property
final
The rise from the baseline as calculated from the font and style for this line.
This is the final computed ascent and can be impacted by the strut, height, scaling, as well as outlying runs that are very tall.
The ascent is provided as a positive value, even though it is typically defined
in fonts as negative. This is to ensure the signage of operations with these
metrics directly reflects the intended signage of the value. For example,
the y coordinate of the top edge of the line is baseline - ascent.
Implementation
final double ascent;