/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/load.py
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revision 267 by bh, Thu Aug 22 10:25:30 2002 UTC revision 439 by jonathan, Thu Feb 27 15:54:05 2003 UTC
# Line 2  Line 2 
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
5    # Jonathan Coles <[email protected]>
6  #  #
7  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
8  # Read the file COPYING coming with GRASS for details.  # Read the file COPYING coming with GRASS for details.
# Line 18  import xml.sax Line 19  import xml.sax
19  import xml.sax.handler  import xml.sax.handler
20  from xml.sax import make_parser, ErrorHandler  from xml.sax import make_parser, ErrorHandler
21    
22    from Thuban import _
23    from Thuban.common import *
24    
25  from Thuban.Model.session import Session  from Thuban.Model.session import Session
26  from Thuban.Model.map import Map  from Thuban.Model.map import Map
27  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
28  from Thuban.Model.color import Color  from Thuban.Model.color import Color
29  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
30    from Thuban.Model.classification import Classification, \
31        ClassGroupDefault, ClassGroupSingleton, ClassGroupRange, ClassGroupMap, \
32        ClassGroupProperties
33    
34    
35  def parse_color(color):  def parse_color(color):
# Line 33  def parse_color(color): Line 40  def parse_color(color):
40      """      """
41      color = string.strip(color)      color = string.strip(color)
42      if color == "None":      if color == "None":
43          result = None          result = Color.None
44      elif color[0] == '#':      elif color[0] == '#':
45          if len(color) == 7:          if len(color) == 7:
46              r = string.atoi(color[1:3], 16) / 255.0              r = string.atoi(color[1:3], 16) / 255.0
# Line 41  def parse_color(color): Line 48  def parse_color(color):
48              b = string.atoi(color[5:7], 16) / 255.0              b = string.atoi(color[5:7], 16) / 255.0
49              result = Color(r, g, b)              result = Color(r, g, b)
50          else:          else:
51              raise ValueError("Invalid hexadecimal color specification %s"              raise ValueError(_("Invalid hexadecimal color specification %s")
52                               % color)                               % color)
53      else:      else:
54          raise ValueError("Invalid color specification %s" % color)          raise ValueError(_("Invalid color specification %s") % color)
55      return result      return result
56    
57    
58  class ProcessSession(xml.sax.handler.ContentHandler):  class ProcessSession(xml.sax.handler.ContentHandler):
59    
60      # Dictionary mapping element names (or (URI, element name) pairs for      # Dictionary mapping element names (or (URI, element name) pairs for
61      # documents using amespaces) to method names. The methods should      # documents using namespaces) to method names. The methods should
62      # accept the same parameters as the startElement (or startElementNS)      # accept the same parameters as the startElement (or startElementNS)
63      # methods. The start_dispatcher is used by the default startElement      # methods. The start_dispatcher is used by the default startElement
64      # and startElementNS methods to call a method for the open tag of an      # and startElementNS methods to call a method for the open tag of an
# Line 151  class ProcessSession(xml.sax.handler.Con Line 158  class ProcessSession(xml.sax.handler.Con
158          self.aMap.AddLayer(self.aLayer)          self.aMap.AddLayer(self.aLayer)
159      end_dispatcher['layer'] = "end_layer"      end_dispatcher['layer'] = "end_layer"
160    
161        def start_classification(self, name, qname, attrs):
162            self.aLayer.GetClassification().SetField(
163                attrs.get((None, 'field'), None))
164        start_dispatcher['classification'] = "start_classification"
165    
166        def end_classification(self, name, qname):
167            pass
168        end_dispatcher['classification'] = "end_classification"
169    
170        def start_clnull(self, name, qname, attrs):
171            self.cl_group = ClassGroupDefault()
172            self.cl_group.SetLabel(attrs.get((None, 'label'), ""))
173            self.cl_prop = ClassGroupProperties()
174        start_dispatcher['clnull'] = "start_clnull"
175    
176        def end_clnull(self, name, qname):
177            self.cl_group.SetProperties(self.cl_prop)
178            self.aLayer.GetClassification().SetDefaultGroup(self.cl_group)
179            del self.cl_group, self.cl_prop
180        end_dispatcher['clnull'] = "end_clnull"
181    
182        def start_clpoint(self, name, qname, attrs):
183            attrib_value = attrs.get((None, 'value'), "0")
184    
185            try:
186                value  = Str2Num(attrib_value)
187            except:
188                value  = attrib_value
189    
190            self.cl_group = ClassGroupSingleton(value)
191            self.cl_group.SetLabel(attrs.get((None, 'label'), ""))
192            self.cl_prop = ClassGroupProperties()
193    
194        start_dispatcher['clpoint'] = "start_clpoint"
195    
196        def end_clpoint(self, name, qname):
197            self.cl_group.SetProperties(self.cl_prop)
198            self.aLayer.GetClassification().AddGroup(self.cl_group)
199            del self.cl_group, self.cl_prop
200        end_dispatcher['clpoint'] = "end_clpoint"
201    
202        def start_clrange(self, name, qname, attrs):
203    
204            try:
205                min = Str2Num(attrs.get((None, 'min'), "0"))
206                max = Str2Num(attrs.get((None, 'max'), "0"))
207            except ValueError:
208                raise ValueError(_("Classification range is not a number!"))
209    
210            self.cl_group = ClassGroupRange(min, max)
211            self.cl_group.SetLabel(attrs.get((None, 'label'), ""))
212            self.cl_prop = ClassGroupProperties()
213    
214        start_dispatcher['clrange'] = "start_clrange"
215    
216        def end_clrange(self, name, qname):
217            self.cl_group.SetProperties(self.cl_prop)
218            self.aLayer.GetClassification().AddGroup(self.cl_group)
219            del self.cl_group, self.cl_prop
220        end_dispatcher['clrange'] = "end_clrange"
221    
222        def start_cldata(self, name, qname, attrs):
223            self.cl_prop.SetStroke(parse_color(attrs.get((None, 'stroke'), "None")))
224            self.cl_prop.SetStrokeWidth(
225                int(attrs.get((None, 'stroke_width'), "0")))
226            self.cl_prop.SetFill(parse_color(attrs.get((None, 'fill'), "None")))
227        start_dispatcher['cldata'] = "start_cldata"
228    
229        def end_cldata(self, name, qname):
230            pass
231        end_dispatcher['cldata'] = "end_cldata"
232    
233      def start_table(self, name, qname, attrs):      def start_table(self, name, qname, attrs):
234          print "table title: %s" % attrs.get('title', None)          print "table title: %s" % attrs.get('title', None)
235      start_dispatcher['table'] = "start_table"      start_dispatcher['table'] = "start_table"
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