[cairo] User-font branch, hinting?
felipe.sanches at gmail.com
Fri Mar 28 17:53:07 PDT 2008
hey! I am interested on learning about user-fonts because I intend to
use it on a Summer of Code project. Can you point me the procedures
needed to start tinkering with this?
Where is the repository where this code is currently? Where can I
learn about the API? Is there sample code using this new feature?
On Fri, Mar 28, 2008 at 9:43 PM, Peter Clifton <pcjc2 at cam.ac.uk> wrote:
> Hi guys,
> I've begun to play with Behdad's user-font branch, and have manged to
> get some rendering - (yay!!)... seems to be working, and I'm drawing in
> a notional 1x1 coordinate space for my glyphs.
> What I'm wondering though (and please forgive the noob-ness...), does
> the render_glyph function have any chance to render a given glyph with
> different precision at different scaling? (IE.. aware of the pixel grid
> on the final output surface?)
> The example I'm looking at, is that the geda-gschem font uses single
> pixel wide lines in its (currently self-rendered) glyphs. Effectively,
> what we want is to be able to set the magic line-width of zero (I know,
> cairo doesn't do this), and to have the strokes render as single pixel
> width in the output.
> If we can't do this, then the font will become unreadable at small
> sizes, and I'll have to look at a different way of getting speedup with
> our existing rendering. (I'm hoping that the user-font API will allow us
> to use our existing glyphs with cairos optimised glyph cache).
> This requirement for single pixel wide, sharp lines (for backwards
> compat rendering with the old GDK drawing in geda-gschem) unfortunately
> means we can't use "just" cairo tranformation matrices in our code, and
> render in our "world" coordinates. We have to transform ourselves, and
> be aware of the pixel grid). I'm wondering if this is a more general
> problem, something which has a similar solution to the glyphs?
> BTW.. does pango fit into the user-font equation anywhere? (IE.. for
> laying out more complex multi-line texts?). Is there a corresponding
> piece of work which could / will make pango support cairo user-fonts?
> Best wishes,
> Peter Clifton
> Electrical Engineering Division,
> Engineering Department,
> University of Cambridge,
> 9, JJ Thomson Avenue,
> CB3 0FA
> Tel: +44 (0)7729 980173 - (No signal in the lab!)
> cairo mailing list
> cairo at cairographics.org
More information about the cairo