[SDL] [SDL_ttf] disable kerning or provide a function

[William Konopka]

Hi, 

I've been trying to use SDL_ttf for my project. I'm designing a lightweight
widget tool set for SDL. I've run into a problem during implementation of a text
editing widget. The thing is that I'm trying to calculate the position (in the
string) of a character under a mouse pointer (to allow text selection)

Unfortunately, there is no documented functionality to perform this. I could be
rendering all the glyphs solely and put them together in the end (but
"officially" I don't know how to merge a few surfaces into one - such functions
as SDL_AllocSurface are undocumented, and rendering many surfaces instead of one
would, as I suppose, slow the application down, not to mention the redundancy in
data structures)

I see two solutions to the problem. Either you provide an option to disable
kerning for a font (the quick and dirty solution), or a function that takes the
relative coordinates of mouse pointer and returns the string position of an
element pointed by the pointer. Whadda ya say?