<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> YAY, it WORKS! thanks so much, the first useful pointer in days. do you happen to know a site where people post useful recipes concerning cairo / other graphics processing in pyhon (other than the obvious aspn cookbook)? any comprehensive guide to caito / pycairo? you know i find it hard to figure out to do stuff like this in cairo. as soon as i know, it's not so bad, i'll simply wrap it as `def scale_image(...)` and presto. it's just those working code examples for various tasks that i need. i've already hatched a few methods to draw simple shapes, now i have raster scaling @ ffx3 quality. i am happy. cheers & ~flow Gerdus van Zyl wrote: <blockquote cite="mid:91882ea90805240405m4f0e95c8wb0e9b8b8e1b06dba@mail.gmail.com" type="cite"> <pre wrap="">To resample a png in pyCairo you need this: import cairo img = cairo.ImageSurface.create_from_png("in.png") width = img.get_width() height = img.get_height() imgpat = cairo.SurfacePattern(img) scaler = cairo.Matrix() #1 = 100%; 2 = 50%;0.5 = 200% scaler.scale(2,2) #50% downscale in this case imgpat.set_matrix(scaler) #set resampling filter imgpat.set_filter(cairo.FILTER_BEST) canvas = cairo.ImageSurface(cairo.FORMAT_ARGB32,320,240) ctx = cairo.Context(canvas) ctx.set_source(imgpat) ctx.paint() canvas.write_to_png("out.png") >From reading your posts to other lists I believe PIL is simpler. But it depends on your use case of course. ~Gerdus On Sat, May 24, 2008 at 12:04 PM, Wolfgang Lipp <a class="moz-txt-link-rfc2396E" href="mailto:paragate@gmx.net"><paragate@gmx.net></a> wrote: </pre> <blockquote type="cite"> <pre wrap="">[also posted to: comp.lang.python] hi all, i've heard cairo has become the image scling library for firefox3. is that true? wonderful, i want to do that in python. there's a python interface for cairo, right? i've used it before to do simple vector stuff. seems to work. however, i haven't been able to find relevant pointers via google. (rant: your mailman interface here is incredibly unsuited to promote open discussions). so do you have any pointers on how to resize a raster image with python using cairo? i've been jumping through hoops for a while now, and i believe it should be easier. cheers and ~flow ps. related (long) posts: <a class="moz-txt-link-freetext" href="http://groups.google.com/group/pyglet-users/browse_frm/thread/44253ad01d809da5/cd051e6bced271e1#cd051e6bced271e1">http://groups.google.com/group/pyglet-users/browse_frm/thread/44253ad01d809da5/cd051e6bced271e1#cd051e6bced271e1</a> <a class="moz-txt-link-freetext" href="http://groups.google.com/group/comp.lang.python/browse_frm/thread/5df65d99cff0d7bb#">http://groups.google.com/group/comp.lang.python/browse_frm/thread/5df65d99cff0d7bb#</a> _______________________________________________ cairo mailing list <a class="moz-txt-link-abbreviated" href="mailto:cairo@cairographics.org">cairo@cairographics.org</a> <a class="moz-txt-link-freetext" href="http://lists.cairographics.org/mailman/listinfo/cairo">http://lists.cairographics.org/mailman/listinfo/cairo</a> </pre> </blockquote> <pre wrap=""> </pre> </blockquote> </body> </html>