projects.mako.cc - yourule/blob - yourule.py

   1 #!/usr/bin/env python
   2
   3 # YouRule: Onscreen Ruler Generator
   4 #
   5 # Copyright (C) 2007 Benjamin Mako Hill <mako@atdot.cc>
   6 #
   7 # This program is free software: you can redistribute it and/or modify
   8 # it under the terms of the Affero General Public License as published
   9 # by the Free Software Foundation, either version 1 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # General Public License for more details.
  16 #
  17 # You should have received a copy of the Affero General Public License
  18 # along with this program.  If not, see
  19 # <http://http://www.affero.org/oagpl.html>.
  20
  21
  22 from __future__ import division
  23 import web
  24 import sys, os, re
  25 from storm.locals import *
  26
  27 # recalculate the path based on the location of the file
  28 sys.path.append(os.path.dirname(__file__))
  29 from svgruler import SVGRuler
  30
  31 from jinja import Environment, FileSystemLoader
  32 jinja_env = Environment('<%', '%>', '<%=', '%>', '<%#', '%>',
  33                         loader=FileSystemLoader(os.path.dirname(__file__) + "/templates/"))
  34
  35 def render(filename, vars={}):
  36     if re.match(r'.+\.\css$', filename):
  37         web.header("Content-Type","text/css; charset=utf-8")
  38     else:
  39         web.header("Content-Type","text/html; charset=utf-8")
  40
  41     tmpl = jinja_env.get_template(filename + '.tmpl')
  42     vars['homepath'] = web.ctx.homepath
  43     vars['ctx'] = web.ctx
  44     return tmpl.render(vars)
  45
  46 # the url map for the application
  47 urls = ( '/?', 'index',
  48          '/ruler_([0-9\.]+)px_([0-9\.]+)([A-Za-z]+).(svg|png|jpg)', 'ruler_img',
  49          '/show/(.*(svg|png|jpg))', 'show_ruler',
  50          '/gallery(.*)', 'gallery',
  51          '/delete/(\d+)', 'delete',
  52          '/undelete/(\d+)', 'undelete',
  53          '/style.css', 'css')
  54
  55 database = create_database("mysql:yourule")
  56
  57 store = Store(database)
  58
  59 class Ruler(object):
  60     __storm_table__ = "gallery"
  61     id = Int(primary=True)
  62     pixel_width = Float()
  63     unit_width = Float()
  64     model = Unicode()
  65     units = Unicode()
  66     visible = Int()
  67     cm_in_ratio = 0.3937
  68
  69     def __init__(self, **kw):
  70         self.pixel_width = float(kw['pixel_width'])
  71         self.unit_width = float(kw['unit_width'])
  72         self.units = unicode(kw['units'])
  73         if kw.has_key('model'):
  74             self.model = unicode(kw['model'])
  75         else:
  76             self.model = u''
  77
  78     def cm_width(self):
  79         if self.units == 'centimeters':
  80             return self.unit_width
  81         elif self.units == 'inches':
  82             return(round(self.unit_width / self.cm_in_ratio, 2))
  83
  84     def in_width(self):
  85         if self.units == 'inches':
  86             return self.unit_width
  87         elif self.units == 'centimeters':
  88             return(round(self.unit_width * self.cm_in_ratio, 2))
  89
  90     def url(self):
  91         return('ruler_%spx_%s%s.png' % (self.pixel_width,
  92                                         self.unit_width, self.units))
  93
  94
  95 class index:
  96     def GET(self):
  97         return render('index', locals())
  98
  99     def POST(self):
 100         input = web.input()
 101
 102         errormsg = validate_input(input)
 103
 104         if errormsg:
 105             pixel_width = input['pixel_width']
 106             unit_width = input['unit_width']
 107             units = input['units']
 108             return render('index', locals())
 109         else:
 110             ruler = Ruler(pixel_width = input['pixel_width'],
 111                           unit_width = input['unit_width'],
 112                           units = input['units'])
 113
 114             web.redirect('/show/%s' % ruler.url())
 115
 116 class show_ruler:
 117     def GET(self, ruler_url, ext):
 118         if web.input().has_key('fromgallery'):
 119             fromgallery = True
 120         else:
 121             fromgallery = False
 122
 123         other_unit, other_unit_url = get_other_unit(ruler_url)
 124
 125         return render('show_ruler', locals())
 126
 127 class ruler_img:
 128     def GET(self, pixel_width=None, unit_width=None, units=None, ext=None):
 129
 130         # TODO check to see if it's a format that we support
 131
 132         # set ruler height to be 200 px always
 133         pixel_width = float(pixel_width)
 134         unit_width = float(unit_width)
 135
 136         ruler_height = 200
 137
 138         scale = pixel_width / unit_width
 139         ruler_length = int(unit_width)
 140
 141         ruler = SVGRuler(scale, units, ruler_height, ruler_length)
 142
 143         # print the header
 144         if ext == 'svg': ext = 'svg+xml'
 145         web.header("Content-Type", "image/%s" % ext)
 146
 147         if ext == 'svg+xml':
 148             return(ruler.getxml())
 149         else:
 150             pin, pout = os.popen2('convert -size %sx%s - %s:-' % \
 151                                   (pixel_width, ruler_height, ext))
 152
 153             pin.write(ruler.getxml())
 154             pin.close()
 155             return(pout.read())
 156
 157 class gallery:
 158     def GET(self, ruler_url):
 159
 160         if ruler_url:
 161             pixel_width, unit_width, units = process_ruler_url(ruler_url)[0:3]
 162
 163         new_rulers = store.find(Ruler, Ruler.visible == 1)#.order_by(Ruler.model)
 164
 165         rulers = []
 166         for ruler in new_rulers:
 167             rulers.append(ruler)
 168
 169         #rulers = map(lambda x: x, rulers)
 170
 171         return render('gallery', locals())
 172
 173     def POST(self, ruler_url):
 174         input = web.input()
 175
 176         errormsg = validate_input(input)
 177         if not input.model:
 178             errormsg = 'Please fill out all fields.'
 179
 180         if errormsg:
 181             pixel_width = input['pixel_width']
 182             unit_width = input['unit_width']
 183             units = input['units']
 184             model = input['model']
 185         else:
 186             new_ruler = Ruler(pixel_width = input['pixel_width'],
 187                               unit_width = input['unit_width'],
 188                               units = input['units'],
 189                               model = input['model'])
 190
 191             store.add(new_ruler)
 192             store.commit()
 193
 194         rulers = store.find(Ruler, Ruler.visible == 1)
 195         #rulers.order_by(Ruler.model)
 196         return render('gallery', locals())
 197
 198 class delete:
 199     def GET(self, id):
 200         ruler = store.get(Ruler, int(id))
 201         ruler.visible = 0
 202         store.commit()
 203         web.redirect('/gallery')
 204
 205
 206 class undelete:
 207     def GET(self, id):
 208         ruler = store.get(Ruler, int(id))
 209         ruler.visible = 1
 210         store.commit()
 211         web.redirect('/gallery')
 212
 213 class css:
 214     def GET(self):
 215         return render('style.css')
 216
 217 def get_other_unit(url):
 218     pixel_width, unit_width, units = process_ruler_url(url)[0:3]
 219
 220     ruler = Ruler(pixel_width=pixel_width, unit_width=unit_width, units=units)
 221     pixel_width, unit_width, units = process_ruler_url(url)[0:3]
 222
 223     if units == 'centimeters':
 224         units = 'inches'
 225         unit_width = ruler.in_width()
 226     elif units == 'inches':
 227         units = 'centimeters'
 228         unit_width = ruler.cm_width()
 229
 230     new_ruler = Ruler(pixel_width=pixel_width, unit_width=unit_width,
 231                       units=units)
 232
 233     return(units, new_ruler.url())
 234
 235
 236 def process_ruler_url(url):
 237     url = re.sub(r'^/?(ruler.*)$', r'\1', url)
 238     return(re.match( r'ruler_([\d\.]+)px_([\d\.]+)(\w+).(png|svg|jpg)',
 239            url).groups())
 240
 241 def validate_input(input):
 242     errormsg = False
 243
 244     if not input.pixel_width \
 245         or not input.unit_width:
 246         errormsg = 'Please fill out all fields.'
 247     elif not re.match('^[\d\.]+$', input.pixel_width) \
 248         or not re.match('^[\d\.]+$', input.unit_width):
 249         errormsg = "Widths must be numbers."
 250     elif input['pixel_width'] < 0 \
 251         or input['unit_width'] < 0:
 252         errormsg = 'Widths must be greater than postive.'
 253
 254     return(errormsg)
 255
 256
 257 web.webapi.internalerror = web.debugerror
 258 if __name__ == "__main__":
 259     web.run(urls, globals(), web.reloader)
 260
 261 app = web.application(urls, globals(), autoreload=False)
 262 application = app.wsgifunc()
 263