The best source of info for pycairo is the tutorial at <a href="http://www.tortall.net/mu/wiki/CairoTutorial">http://www.tortall.net/mu/wiki/CairoTutorial</a>;<br>and then of course the docs at <a href="http://www.cairographics.org/documentation/">http://www.cairographics.org/documentation/</a>; especialy the cookbook and samples. There is no really comprehensive guide on cairo at the moment.<br> <br>Most of the more advanced question I had were solved by reading code from software that uses cairo eg: GTK and Mono Moonlight come to mind.<br><br>Have fun with cairo!<br><br>~Gerdus<br><br><div class="gmail_quote">On Sun, May 25, 2008 at 2:00 PM, Wolfgang Lipp <<a href="mailto:paragate@gmx.net">paragate@gmx.net</a>> wrote:<br> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div bgcolor="#ffffff" text="#000000"> <br> 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? <br> <br> 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.<br> <br> cheers & ~flow<div><div></div><div class="Wj3C7c"><br> <br> Gerdus van Zyl wrote: <blockquote type="cite"> <pre>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 href="mailto:paragate@gmx.net" target="_blank"><paragate@gmx.net></a> wrote: </pre> <blockquote type="cite"> <pre>[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 href="http://groups.google.com/group/pyglet-users/browse_frm/thread/44253ad01d809da5/cd051e6bced271e1#cd051e6bced271e1" target="_blank">http://groups.google.com/group/pyglet-users/browse_frm/thread/44253ad01d809da5/cd051e6bced271e1#cd051e6bced271e1</a> <a href="http://groups.google.com/group/comp.lang.python/browse_frm/thread/5df65d99cff0d7bb#" target="_blank">http://groups.google.com/group/comp.lang.python/browse_frm/thread/5df65d99cff0d7bb#</a> _______________________________________________ cairo mailing list <a href="mailto:cairo@cairographics.org" target="_blank">cairo@cairographics.org</a> <a href="http://lists.cairographics.org/mailman/listinfo/cairo" target="_blank">http://lists.cairographics.org/mailman/listinfo/cairo</a> </pre> </blockquote> <pre> </pre> </blockquote> </div></div></div> </blockquote></div><br>