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/b25f8fc6-1586-4ac1-aae3-b2daa3d6153co%40googlegroups.com.
