Can you share the updated code ? I also wana use it.
On Tuesday, March 30, 2010 12:31:52 PM UTC+5:30, Ashley Lo wrote: > > Hi, > > I am trying to modify an image resize Python project. The project > (contributed by a good guy) and it works perfect, the only problem is > that I only want to resize a bigger image to smaller image, instead of > resizing smaller to bigger. > > I need a parameter in the URL to control it e.g. r=1 then only > minimize the picture. I tried 3 days already to modify the code but I > have no luck since I found that appspot always return error! The > problem is I don't know how to program Python. > > URL: > http://image-resize.appspot.com/?url=http://image.gsfc.nasa.gov/image/image_launch_a5.jpg&width=200&height=200 > > I am wondering anyone could do me a favour to help modify the code. > Sorry for my bad English! > > Ashley > > > # This program is free software: you can redistribute it and/or modify > # it under the terms of the GNU General Public License as published by > # the Free Software Foundation, either version 3 of the License, or > # (at your option) any later version. > # > # This program is distributed in the hope that it will be useful, > # but WITHOUT ANY WARRANTY; without even the implied warranty of > # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > # GNU General Public License for more details. > # > # You should have received a copy of the GNU General Public License > # along with this program. If not, see <http://www.gnu.org/licenses/ > >. > > from google.appengine.api import images, memcache, urlfetch > from google.appengine.ext.webapp import RequestHandler, template, > util, WSGIApplication > from os import path > > class ScaleHandler(RequestHandler): > def get(self): > # Retrieve the request parameters. > url = self.request.get("url") > width = self.request.get("width", "0") > height = self.request.get("height", "0") > r = self.request.get("r", "0") > > # If the url parameter has not been set, display the help > document. > if not url: > topbar = "http://www.yahoo.com"; > template_path = path.join(path.dirname(__file__), > "imagescaler.html") > template_vars = {"topbar": urlfetch.fetch(topbar).content} > self.response.out.write(template.render(template_path, > template_vars)) > return > > # Determine the cache key for the scaled image according to > the request parameters. > key = "".join([width, "|", height, "|", url]) > > # Search for the scaled image as a PNG first, then as a JPEG. > thumbnail = memcache.get(key, "png") > if thumbnail is None: > thumbnail = memcache.get(key, "jpeg") > if thumbnail is None: > image = memcache.get(url, "png") > if image is None: > image = memcache.get(url, "jpeg") > if image is None: > # Retrieve the original image from the remote > server. > file = urlfetch.Fetch(url) > image = file.content > > # Determine the namespace from the HTTP > response headers. > if file.headers["content-type"] == "image/ > jpeg": > namespace = "jpeg" > else: > namespace = "png" > > # Attempt to cache the original image if size > allows. > try: > memcache.add(url, image, 0, 0, namespace) > except Exception: > pass > else: > namespace = "jpeg" > else: > namespace = "png" > > # Wrap the image in the Image API object. > image = images.Image(image) > > # Resize the image according to the requested > dimensions. > image.resize(int(width), int(height)) > > # Generate the new version of the image. > if namespace == "jpeg": > thumbnail = > image.execute_transforms(output_encoding=images.JPEG) > else: > thumbnail = image.execute_transforms() > > # Cache the new version of the image. > memcache.add(key, thumbnail, 0, 0, namespace) > else: > namespace = "jpeg" > else: > namespace = "png" > > # Generate the output to be sent back to the user agent. > self.response.headers["content-type"] = "image/" + namespace > self.response.out.write(thumbnail) > > if __name__ == "__main__": > util.run_wsgi_app(WSGIApplication([("/", ScaleHandler)], > debug=True)) > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
