Text edit boxes are laggy

[CelticMinstrel]

I think this is related to text rendering, but not quite sure. It seems to be worse on Windows, but does affect OSX as well.

[CelticMinstrel]

Considering using the TGUI text box to fix this, but I'll need to a) evaluate which features of the current box would still need to be implemented on top of it and b) whether I can get TGUI working with my personal build processes.

[NQNStudios]

@CelticMinstrel Did you observe this mainly in the scenario editor, as the strings you were typing got longer and longer?

[NQNStudios]

I see that in some scenario editor windows there are multi-line messages in addition to text fields, so those text fields would be expected to be laggy even when empty, because of lag induced by wrapping the messages every frame

[CelticMinstrel]

I think I've only observed this in the scenario editor. I don't remember if it has been improved since I first noticed it, but I remember it taking seconds to move the insertion point in some fields.

[NQNStudios]

I refactored them to try to use calculate_line_wrapping() and it seems to break mouse input for moving the cursor and dragging to select text....