Source Code for Module library.pyjamas.gmaps.Polygon

 1  # Copyright (C) 2009 Daniel Carvalho <idnael@gmail.com> 
 2  # 
 3  # Licensed under the Apache License, Version 2.0 (the "License"); 
 4  # you may not use this file except in compliance with the License. 
 5  # You may obtain a copy of the License at 
 6  # 
 7  #     http://www.apache.org/licenses/LICENSE-2.0 
 8  # 
 9  # Unless required by applicable law or agreed to in writing, software 
10  # distributed under the License is distributed on an "AS IS" BASIS, 
11  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
12  # See the License for the specific language governing permissions and 
13  # limitations under the License. 
14   
15  from __pyjamas__ import JS 
16  from pyjamas.gmaps.Utils import dictToJs, createListenerMethods, listToJs 
17   
18   
19 -def Polygon(options): 
20      JS("return new $wnd['google']['maps']['Polygon'](@{{options}})") 
21   
22 -def PolygonOptions(adict): 
23      """Accepts a dictionary of options. If necessary, transforms "paths" from 
24      python list or encoded string to javascript array.""" 
25      if adict.has_key("paths"): 
26          try: 
27              if isinstance(adict["paths"], (list,tuple)): 
28                  adict["paths"] = listToJs(adict["paths"]) 
29              elif isinstance(adict["paths"], basestring): #Gmaps 
30                  adict["paths"] = decodePoly(adict["paths"]) 
31          except: #isinstance throws exception for raw javascript objects. 
32              pass #That means it's already good. 
33      return dictToJs(adict) 
34   
35 -def decodePoly(poly): 
36      """Quickly decodes a gmaps api v2 encoded polyline... deprecated by google but still 
37      a good over-the-wire compression format""" 
38      JS(""" 
39      var i=-1,j=-1,k,l,q=@{{poly}}['match'](/[\_-\~]*[\?-\^]/g),w=0,x=0,y=0,z=1e-5; 
40   
41      @{{poly}}=[]; 
42   
43      if (q) for (;;) 
44      { 
45          if (!q[++i]) break; 
46          for (k=q[i]['length'],l=63,w=0;k--;l=95) w=(w<<5)+q[i]['charCodeAt'](k)-l; 
47          y+=(w<<31>>31)^(w>>1); 
48          if (!q[++i]) break; 
49          for (k=q[i]['length'],l=63,w=0;k--;l=95) w=(w<<5)+q[i]['charCodeAt'](k)-l; 
50          x+=(w<<31>>31)^(w>>1); 
51          @{{poly}}[++j]=new $wnd['google']['maps']['LatLng'](y*z,x*z); 
52      } 
53      return @{{poly}} 
54  """) 
55