From: Detlef Reichl <detlef.reichl@...>
Date: 2006-01-11T05:30:39+09:00
Subject: Re: You want a Ruby extension? Talk to me, baby

Am Mittwoch, den 11.01.2006, 04:44 +0900 schrieb mental@rydia.net:
> Quoting Eric Hodel <drbrain@segment7.net>:
> 
> > You don't need an extension for that.  You've already got
> > Ruby-GTK and RMagick.  Just glue them together with Ruby.
> 
> He's probably wondering specifically how to get from an RMagick
> image to a GdkPixbuf or similar (a question I don't know the answer
> to offhand), in pure Ruby.
> 
Its very easy:

my_pixbuf = Gdk::Pixbuf.new(rmagic_image.to_blob,
Gdk::Pixbuf::ColorSpace::RGB, false, 8, image_width, image_height,
image.width * 3)

the API reference for the gdk-pixbuf call is:
Gdk::Pixbuf.new(data, colorspace, has_alpha, bit_per_sample, width,
height, rowstride)

rmagic_image.to_blob returns the pixel data

cheers
detlef


> -mental
>