STR #1305: partial fix.

FLTK on Mac with --enable-quartz now uses ATSU instead of CG to render text. First of all, it is a lot faster, but more importantly, character positions are now all at integer positions. This is not as beatiful as standard Mac text, but required by the FLTK internals. I seriously doubt that anyone who's not a typesette will notice the difference.

But - and there's always a but, isn't there?

This commit does not handle the ASCII-to-UTF16 conversion yet, so all characters above 127 are junk.

Also, there are still a lot of problems with the Quartz support in general. Most prominently, we still get a lot of messages about invalid contexts which ruins the clipping.

So in conclusion (this must be the longest SVN commit annotation ever) this modification fixes the main reason why I did not finish the Quartz port. After fixing this, there's hope that we will wrap even that dirty little corner of FLTK up for good!



git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5171 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

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