Re: thumbnail. Your code already uses it. BTW I think everyone uses Pillow now (drop in replacement for PIL with similar methods).
On Sunday, 8 November 2020 at 19:54:58 UTC gaelpri...@gmail.com wrote: > > An interesting routine, but I just use PIL's thumbnail() method. Could > you explain the advantages of your routine? > I've no idea. I've followed an example years ago and I'm still working > like that. > > Can you post here and example of how do you use the PIL's thumbnail() > method? > Il giorno sabato 7 novembre 2020 alle 23:35:43 UTC+1 snide...@gmail.com > ha scritto: > >> >> >> On Sunday, November 1, 2020 at 1:46:51 PM UTC-8, Gaël Princivalle wrote: >>> >>> I've found that in this function the upload folder was without a '/' at >>> the beginning. >>> On Webfaction it was working fine, on Opalstack no. >>> >>> I think it's due more to the Web2py version than to the hosting. >>> On Webfaction I've PIL (not Pillow) Python 2.7.5 with Web2py 2.14.6. and >>> it works fine. >>> On Opalstack I've Pillow Python 2.7.5 with Web2py 2.20.4. >>> Anyway I've updated 'upload/' to '/upload/' and it works. >>> If it could be useful for someone else, as this SMARTHUMB function has >>> been shared here. >>> >>> def SMARTHUMB(image, box, fit=False, name="thumb"): >>> #Downsample the image. >>> #@param img: Image - an Image-object >>> #@param box: tuple(x, y) - the bounding box of the result image >>> #@param fit: boolean - crop the image to fill the box >>> if image: >>> request = current.request >>> img = Image.open(request.folder +* 'uploads/'* + image) >>> #preresize image with factor 2, 4, 8 and fast algorithm >>> factor = 1 >>> while img.size[0] / factor > 2 * box[0] and img.size[1] * 2 / >>> factor > 2 * box[1]: >>> factor *= 2 >>> if factor > 1: >>> img.thumbnail((img.size[0] / factor, img.size[1] / factor), >>> Image.NEAREST) >>> >>> #calculate the cropping box and get the cropped part >>> if fit: >>> x1 = y1 = 0 >>> x2, y2 = img.size >>> wRatio = 1.0 * x2 / box[0] >>> hRatio = 1.0 * y2 / box[1] >>> if hRatio > wRatio: >>> y1 = int(y2 / 2 - box[1] * wRatio / 2) >>> y2 = int(y2 / 2 + box[1] * wRatio / 2) >>> else: >>> x1 = int(x2 / 2 - box[0] * hRatio / 2) >>> x2 = int(x2 / 2 + box[0] * hRatio / 2) >>> img = img.crop((x1, y1, x2, y2)) >>> >>> #Resize the image with best quality algorithm ANTI-ALIAS >>> img.thumbnail(box, Image.ANTIALIAS) >>> >>> root, ext = os.path.splitext(image) >>> thumb = '%s_%s%s' % (root, name, ext) >>> img.save(request.folder + *'uploads/'* + thumb) >>> return thumb >>> >> >> An interesting routine, but I just use PIL's thumbnail() method. Could >> you explain the advantages of your routine? >> >> /dps >> >> > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/web2py/b1688c63-e4c4-41ee-a584-43f1ae9d0cean%40googlegroups.com.
