Re: Pango/Cairo circular problem

[Theo Veenker <Theo Veenker let uu nl>]

Andrei Vasiliu wrote:
> Hello all,
>
> I've run into a sort of brick wall here, and I can't go on with my 
> project until I pass it. I'm using GTK, Cairo, and Pango... I need to 
> "cache" some GUI elements, that will be displayed numerous times and at 
> various places on a big widget. So I'm using Cairo memory surfaces for this.
>
> The problem: The size of these memory surfaces depend on their contents, 
> so I need to determine the size before creating one. The contents 
> include Pango layouts. In order to create a Pango layout for Cairo and 
> get its size, I need a Cairo context. In order to create a Cairo 
> context, I need the size of several Pango layouts.
>
> Anyone ever had this problem before?

You just have to create a surface (size 1x1) and layout the text on
that surface. Then you can determine the required size. This is the
way it's done ATM I believe.

Theo