Scrolls text_view so that mark is on the screen in the position indicated by xalign and yalign. An alignment of 0.0 indicates left or top, 1.0 indicates right or bottom, 0.5 means center. If use_align is FALSE, the text scrolls the minimal distance to get the mark onscreen, possibly not scrolling at all. The effective screen for purposes of this function is reduced by a margin of size within_margin.

class TextView
double xalign
double yalign


mark TextMark
withinMargin double

margin as a [0.0,0.5) fraction of screen size

useAlign bool

whether to use alignment arguments (if FALSE, just get the mark onscreen)

xalign double

horizontal alignment of mark within visible area

yalign double

vertical alignment of mark within visible area