[cairo] Re: [cairo-announce] ANN: pycairo release 1.4.0 now available

[Hugo Vincent]

> Date: Sun, 18 Mar 2007 09:44:01 +0800
> From: Steve Chaplin <stevech1097 at yahoo.com.au>
> Subject: Re: [cairo] [cairo-announce] ANN: pycairo release 1.4.0 now
> 	available
> To: Dethe Elza <delza at livingcode.org>
> Cc: cairo at cairographics.org
> Message-ID: <1174182241.2781.11.camel at localhost.localdomain>
> Content-Type: text/plain
>
> On Fri, 2007-03-16 at 21:36 -0700, Dethe Elza wrote:
>> This is great news, Steve, thanks for keeping the python bindings
>> caught up with the latest Cairo.
>>
>> Does this by any chance support the Quartz backend, and if not, what
>> would it take to hook PyCairo up to Quartz?
>
> There is no Quartz support in Pycairo. Note that in cairo the Quartz
> backend is still experimental and not supported.
>
> Using Quartz from Pycairo would require a Quartz user write and test a
> QuartzSurface(Surface) class to be added to cairo/pycairo-surface.c
>
> The new class would wrap the cairo C functions:
> cairo_surface_t *
> cairo_quartz_surface_create (cairo_format_t format,
>                              unsigned int width,
>                              unsigned int height);
>
> cairo_surface_t *
> cairo_quartz_surface_create_for_cg_context (CGContextRef cgContext,
>                                             unsigned int width,
>                                             unsigned int height);
>
> CGContextRef
> cairo_quartz_surface_get_cg_context (cairo_surface_t *surface);
>
> The first function prototype looks like it should be easy to do. The
> second and third use CGContextRef, which I understand is a pointer,  
> and
> can't used by pycairo unless there is a preexisting python binding for
> CGContextRef.
>
> Regards
> Steve

As it happens, there are preexisting Python bindings for CGContextRef  
and it ships with Mac OS, although they are proprietary and binary-only.

http://developer.apple.com/graphicsimaging/pythonandquartz.html

http://developer.apple.com/documentation/GraphicsImaging/Conceptual/ 
drawingwithquartz2d/dq_python/chapter_17_section_1.html

Unfortunately, I suspect with the implementation details hidden from  
us (seeing as these bindings are proprietary) it may not be of any  
use for this purpose.