It is not pure python it is a binary library. As far as I know none of them runs on GAE.
On Jun 29, 1:23 pm, Joe Barnhart <[email protected]> wrote: > Since PIL is all Python, do you suppose it's compatible with GAE? > That could give it a nod over ImageMagick in my mind. > > On Jun 29, 9:12 am, mdipierro <[email protected]> wrote: > > > Something like this could go in gluon.conrtib send me a patch when you > > have time. > > > On Jun 29, 10:39 am, cjparsons <[email protected]> wrote: > > > > I've had success with PIL to thumbnail uploaded images. > > > > In upload form handling: > > > > if form.accepts(request.vars,session): > > > if not form.vars.get("delete_this_record",False): > > > response.flash = "image accepted" > > > makeThumbnail(form.vars.id) > > > else: > > > response.flash = "image deleted" > > > > then the function to make the thumbnail. This might have less error > > > handling than you'd like. My images are in the db, the main image is > > > field 'image_blob' and the thumbnail, also a blob, 'thumbnail_data'. > > > If yours are in a file then the changes you'd need would actually make > > > the code simpler. > > > > THUMBNAILSIZE = 120 > > > > def makeThumbnail(id): > > > import Image > > > import StringIO > > > > imgRecord = db.images[id] > > > if not imgRecord: > > > return None > > > imgData = Image.open(StringIO.StringIO > > > (imgRecord.image_blob)).convert("RGB") > > > imgData.thumbnail((THUMBNAILSIZE,THUMBNAILSIZE),Image.ANTIALIAS) > > > thumbFile = StringIO.StringIO() > > > imgData.save(thumbFile,"JPEG") > > > thumbFile.seek(0) > > > imgRecord.update_record(thumbnail_data=thumbFile.read()) > > > db.commit() > > > return True > > > > From memory, the above will shrink the picture so the largest > > > dimension is THUMBNAILSIZE, and the aspect ratio is maintained - the > > > shorter dimension may be less than THUMBNAILSIZE if the image wasn't > > > square. > > > > From a different iteration of my code, the following will always give > > > you a square of dimensions xy by xy, without distorting the image, but > > > will crop the image if it wasn't already square. > > > > def makeThumbnail(blob, xy): > > > imgData = Image.open(StringIO.StringIO(blob)).convert("RGB") > > > # make sure thumbnails are square by cropping original to a > > > # square. > > > # Find the longest side > > > w,h = imgData.size > > > if w >= h: > > > voffset=0 > > > hoffset=(w-h)/2 > > > ex = h > > > else: > > > hoffset=0 > > > voffset=(h-w)/2 > > > ex = w > > > imgData = imgData.transform((xy,xy),Image.EXTENT, > > > (hoffset,voffset,hoffset+ex,voffset+ex),Image.BICUBIC) > > > thumbFile = StringIO.StringIO() > > > imgData.save(thumbFile,"JPEG") > > > thumbFile.seek(0) > > > return thumbFile > > > > Sorry if the speed I'm writing my reply, or the inelegance of my > > > implementation makes this post less than helpful. > > > > Chris --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "web2py Web Framework" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/web2py?hl=en -~----------~----~----~----~------~----~------~--~---
