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

   1 #!/usr/bin/env python
   2
   3 from __future__ import division
   4 import web
   5 import sys, os, re
   6 from storm.locals import *
   7 from svgruler import SVGRuler
   8
   9 from jinja import Environment, FileSystemLoader
  10 jinja_env = Environment('<%', '%>', '<%=', '%>', '<%#', '%>',
  11                         loader=FileSystemLoader('templates/'))
  12
  13 def render(filename, vars):
  14     web.header("Content-Type","text/html; charset=utf-8")
  15     tmpl = jinja_env.get_template(filename + '.tmpl')
  16     print tmpl.render(vars)
  17     web.debug(web.ctx)
  18
  19 # the url map for the application
  20 urls = ( '/', 'index',
  21          '/ruler_([0-9\.]+)px_([0-9\.]+)([A-Za-z]+).(svg|png|jpg)', 'ruler_img',
  22          '/show/(.*(svg|png|jpg))', 'show_ruler',
  23          '/gallery(.*)', 'gallery',
  24          '/delete/(\d+)', 'delete',
  25          '/undelete/(\d+)', 'undelete')
  26
  27 database = create_database("sqlite:yourule.db")
  28 store = Store(database)
  29
  30 class Ruler(object):
  31     __storm_table__ = "gallery"
  32     id = Int(primary=True)
  33     pixel_width = Float()
  34     unit_width = Float()
  35     model = Unicode()
  36     units = Unicode()
  37     show = Int()
  38     cm_in_ratio = 0.3937
  39
  40     def __init__(self, **kw):
  41         self.pixel_width = float(kw['pixel_width'])
  42         self.unit_width = float(kw['unit_width'])
  43         self.units = unicode(kw['units'])
  44         if kw.has_key('model'):
  45             self.model = unicode(kw['model'])
  46         else:
  47             self.model = u''
  48
  49     def cm_width(self):
  50         if self.units == 'centimeters':
  51             return self.unit_width
  52         elif self.units == 'inches':
  53             return(round(self.unit_width / self.cm_in_ratio, 2))
  54
  55     def in_width(self):
  56         if self.units == 'inches':
  57             return self.unit_width
  58         elif self.units == 'centimeters':
  59             return(round(self.unit_width * self.cm_in_ratio, 2))
  60
  61     def url(self):
  62         return('ruler_%spx_%s%s.png' % (self.pixel_width,
  63                                         self.unit_width, self.units))
  64
  65
  66 class index:
  67     def GET(self):
  68         render('index', locals())
  69
  70     def POST(self):
  71         input = web.input()
  72
  73         errormsg = validate_input(input)
  74
  75         if errormsg:
  76             pixel_width = input['pixel_width']
  77             unit_width = input['unit_width']
  78             units = input['units']
  79             render('index', locals())
  80         else:
  81             ruler = Ruler(pixel_width = input['pixel_width'],
  82                           unit_width = input['unit_width'],
  83                           units = input['units'])
  84
  85             web.redirect('/show/%s' % ruler.url())
  86
  87 class show_ruler:
  88     def GET(self, ruler_url, ext):
  89         if web.input().has_key('fromgallery'):
  90             fromgallery = True
  91         else:
  92             fromgallery = False
  93
  94         other_unit, other_unit_url = get_other_unit(ruler_url)
  95
  96         render('show_ruler', locals())
  97
  98 class ruler_img:
  99     def GET(self, pixel_width=None, unit_width=None, units=None, ext=None):
 100
 101         # TODO check to see if it's a format that we support
 102
 103         # set ruler height to be 200 px always
 104         pixel_width = float(pixel_width)
 105         unit_width = float(unit_width)
 106
 107         ruler_height = 200
 108
 109         scale = pixel_width / unit_width
 110         ruler_length = int(unit_width)
 111
 112         ruler = SVGRuler(scale, units, ruler_height, ruler_length)
 113
 114         # print the header
 115         if ext == 'svg': ext = 'svg+xml'
 116         web.header("Content-Type", "image/%s" % ext)
 117
 118         if ext == 'svg+xml':
 119             sys.stdout.write(ruler.getxml())
 120         else:
 121             pin, pout = os.popen2('convert -size %sx%s - %s:-' % \
 122                                   (pixel_width, ruler_height, ext))
 123
 124             pin.write(ruler.getxml())
 125             pin.close()
 126             sys.stdout.write(pout.read())
 127
 128 class gallery:
 129     def GET(self, ruler_url):
 130
 131         if ruler_url:
 132             pixel_width, unit_width, units = process_ruler_url(ruler_url)[0:3]
 133
 134         rulers = store.find(Ruler, Ruler.show == 1)
 135         rulers.order_by(Ruler.model)
 136         render('gallery', locals())
 137
 138     def POST(self, ruler_url):
 139         input = web.input()
 140
 141         errormsg = validate_input(input)
 142         if not input.model:
 143             errormsg = 'Please fill out all fields.'
 144
 145         if errormsg:
 146             pixel_width = input['pixel_width']
 147             unit_width = input['unit_width']
 148             units = input['units']
 149             model = input['model']
 150         else:
 151             new_ruler = Ruler(pixel_width = input['pixel_width'],
 152                               unit_width = input['unit_width'],
 153                               units = input['units'],
 154                               model = input['model'])
 155
 156             store.add(new_ruler)
 157             store.commit()
 158
 159         rulers = store.find(Ruler, Ruler.show == 1)
 160         rulers.order_by(Ruler.model)
 161         render('gallery', locals())
 162
 163 class delete:
 164     def GET(self, id):
 165         ruler = store.get(Ruler, int(id))
 166         ruler.show = 0
 167         store.commit()
 168         web.redirect('/gallery')
 169
 170
 171 class undelete:
 172     def GET(self, id):
 173         ruler = store.get(Ruler, int(id))
 174         ruler.show = 1
 175         store.commit()
 176         web.redirect('/gallery')
 177
 178 def get_other_unit(url):
 179     pixel_width, unit_width, units = process_ruler_url(url)[0:3]
 180
 181     ruler = Ruler(pixel_width=pixel_width, unit_width=unit_width, units=units)
 182     pixel_width, unit_width, units = process_ruler_url(url)[0:3]
 183
 184     if units == 'centimeters':
 185         units = 'inches'
 186         unit_width = ruler.in_width()
 187     elif units == 'inches':
 188         units = 'centimeters'
 189         unit_width = ruler.cm_width()
 190
 191     new_ruler = Ruler(pixel_width=pixel_width, unit_width=unit_width,
 192                       units=units)
 193
 194     web.debug(units)
 195     return(units, new_ruler.url())
 196
 197
 198 def process_ruler_url(url):
 199     url = re.sub(r'^/?(ruler.*)$', r'\1', url)
 200     return(re.match( r'ruler_([\d\.]+)px_([\d\.]+)(\w+).(png|svg|jpg)',
 201            url).groups())
 202
 203 def validate_input(input):
 204     errormsg = False
 205
 206     if not input.pixel_width \
 207         or not input.unit_width:
 208         errormsg = 'Please fill out all fields.'
 209     elif not re.match('^[\d\.]+$', input.pixel_width) \
 210         or not re.match('^[\d\.]+$', input.unit_width):
 211         errormsg = "Widths must be numbers."
 212     elif input['pixel_width'] < 0 \
 213         or input['unit_width'] < 0:
 214         errormsg = 'Widths must be greater than postive.'
 215
 216     return(errormsg)
 217
 218
 219 web.webapi.internalerror = web.debugerror
 220 if __name__ == "__main__":
 221     web.run(urls, globals(), web.reloader)
 222
 223 #application = web.wsgifunc(web.webpyfunc(urls, globals()))
 224