What system component is responsible for rendering text in android?

Right 开发者_开发知识库to left languages are not rendered correctly in my android device -- letters are not connected and sometimes reversed. I wanna fix this, but I don't know where to start. What system component is actually responsible for this?

There is something called the Font Engine Manager which does the work of reading the True Type Font (.ttf) Files (it contains an engine called layout/shaping engine which is responsible for rendering the text properly), I think the following links would be useful: 1, 2