clear usage flags for all entries
removes entries not used after last call of checkpoint() or cleanup()
get font instance with specified parameters
register freetype font by filename - optinally font properties can be passed if known (e.g. from libfontconfig).
sets new font manager singleton instance
returns font manager singleton instance
get font instance best matched specified parameters
clear usage flags for all entries -- for cleanup of unused fonts
removes entries not used after last call of checkpoint() or cleanup()
FreeType based font manager.