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Viewing changes to html_widget_embedded_picture/controllers/main.py

  • Committer: Jonathan Nemry
  • Date: 2014-03-13 18:50:17 UTC
  • Revision ID: jonathan.nemry@acsone.eu-20140313185017-gnfglbgo4m429kaw
[CHG] Embedded Picture Fully Completed

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html_widget_embedded_picture/controllers/main.py
 
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# -*- coding: utf-8 -*-
 
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import cStringIO
 
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import contextlib
 
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import hashlib
 
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import json
 
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import logging
 
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import os
 
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import datetime
 
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from sys import maxint
 
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import psycopg2
 
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import werkzeug
 
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import werkzeug.exceptions
 
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import werkzeug.utils
 
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import werkzeug.wrappers
 
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from PIL import Image
 
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import openerp
 
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from openerp.osv import fields
 
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from openerp.addons.website.models import website
 
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from openerp.addons.web import http
 
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from openerp.addons.web.http import request, LazyResponse
 
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logger = logging.getLogger(__name__)
 
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# Completely arbitrary limits
 
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MAX_IMAGE_WIDTH, MAX_IMAGE_HEIGHT = IMAGE_LIMITS = (1024, 768)
 
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class EmbeddedPicture(openerp.addons.web.controllers.main.Home):
 
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    @http.route('/embedded/gen_img', type='http', auth='user', methods=['POST'])
 
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    def gen_img(self, func, upload):
 
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        img_tag = message = None
 
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        try:
 
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            image_data = upload.read()
 
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            image = Image.open(cStringIO.StringIO(image_data))
 
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            w, h = image.size
 
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            if w*h > 42e6: # Nokia Lumia 1020 photo resolution
 
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                raise ValueError(
 
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                    u"Image size excessive, uploaded images must be smaller "
 
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                    u"than 42 million pixel")
 
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            data_uri = image_data.encode('base64').replace('\n', '')
 
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            ext = upload.filename.split('.')[-1].lower()
 
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            img_tag = '<img src="data:image/{0};base64,{1}">'.format(ext, data_uri)
 
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        except Exception, e:
 
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            logger.exception("Failed to upload image to attachment")
 
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            message = unicode(e)
 
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        return """<script type='text/javascript'>
 
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            window.parent['%s'](%s, %s);
 
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        </script>""" % (func, json.dumps(img_tag), json.dumps(message))
 
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# vim:expandtab:tabstop=4:softtabstop=4:shiftwidth=4: