Bug 3441 - Allow PycairoContext_FromContext to instantiate subclasses of cairo.Context
Summary: Allow PycairoContext_FromContext to instantiate subclasses of cairo.Context
Status: RESOLVED FIXED
Alias: None
Product: pycairo
Classification: Unclassified
Component: general (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: high normal
Assignee: Steve Chaplin
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Reported: 2005-05-31 14:10 UTC by Gustavo J. A. M. Carneiro
Modified: 2005-05-31 12:44 UTC (History)
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Attachments
patch (3.98 KB, patch)
2005-05-31 14:10 UTC, Gustavo J. A. M. Carneiro 		Details | Splinter Review
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Description Gustavo J. A. M. Carneiro 2005-05-31 14:10:12 UTC 
I'd like to follow Owen's suggestion in some mailing list I don't remember of
using inheritance to represent cairo contexts enhanced with some more methods,
some provided by pango, some by gdk.  Thus we would have the following
inheritance chain:

  cairo.Context <--- pango.CairoContext <--- gtk.gdk.CairoContext

To help support this goal, it would be nice to allow PycairoContext_FromContext
to create all these objects, by receiving the type of cairo context to create as
argument.
Comment 1 Gustavo J. A. M. Carneiro 2005-05-31 14:10:30 UTC 
Created attachment 2803 [details] [review]
patch
Comment 2 Steve Chaplin 2005-06-01 05:44:25 UTC 
The patch has been applied, I changed the type to parameter 2 since I think the
type is more important that the base object which is optional.
I also added a type parameter to PycairoSurface_FromSurface since it allows the
removal of 4 other subclass constructor functions and a simplified C API.

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