/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/load.py
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revision 365 by jonathan, Mon Jan 27 11:47:53 2003 UTC revision 473 by jonathan, Wed Mar 5 18:39:45 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.table import FIELDTYPE_INT, FIELDTYPE_DOUBLE, \
26         FIELDTYPE_STRING
27    
28  from Thuban.Model.session import Session  from Thuban.Model.session import Session
29  from Thuban.Model.map import Map  from Thuban.Model.map import Map
30  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
31  from Thuban.Model.color import Color  from Thuban.Model.color import Color
32  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
33  from Thuban.Model.classification import Classification  from Thuban.Model.classification import Classification, \
34        ClassGroupDefault, ClassGroupSingleton, ClassGroupRange, ClassGroupMap, \
35        ClassGroupProperties
36    
37    
38  def parse_color(color):  def parse_color(color):
# Line 34  def parse_color(color): Line 43  def parse_color(color):
43      """      """
44      color = string.strip(color)      color = string.strip(color)
45      if color == "None":      if color == "None":
46          result = None          result = Color.None
47      elif color[0] == '#':      elif color[0] == '#':
48          if len(color) == 7:          if len(color) == 7:
49              r = string.atoi(color[1:3], 16) / 255.0              r = string.atoi(color[1:3], 16) / 255.0
# Line 42  def parse_color(color): Line 51  def parse_color(color):
51              b = string.atoi(color[5:7], 16) / 255.0              b = string.atoi(color[5:7], 16) / 255.0
52              result = Color(r, g, b)              result = Color(r, g, b)
53          else:          else:
54              raise ValueError("Invalid hexadecimal color specification %s"              raise ValueError(_("Invalid hexadecimal color specification %s")
55                               % color)                               % color)
56      else:      else:
57          raise ValueError("Invalid color specification %s" % color)          raise ValueError(_("Invalid color specification %s") % color)
58      return result      return result
59    
60    
# Line 145  class ProcessSession(xml.sax.handler.Con Line 154  class ProcessSession(xml.sax.handler.Con
154          stroke = parse_color(attrs.get((None, 'stroke'), "#000000"))          stroke = parse_color(attrs.get((None, 'stroke'), "#000000"))
155          stroke_width = int(attrs.get((None, 'stroke_width'), "1"))          stroke_width = int(attrs.get((None, 'stroke_width'), "1"))
156          self.aLayer = layer_class(title, filename, fill = fill,          self.aLayer = layer_class(title, filename, fill = fill,
157                                    stroke = stroke, stroke_width = stroke_width)                                    stroke = stroke, lineWidth = stroke_width)
158      start_dispatcher['layer'] = "start_layer"      start_dispatcher['layer'] = "start_layer"
159    
160      def end_layer(self, name, qname):      def end_layer(self, name, qname):
# Line 153  class ProcessSession(xml.sax.handler.Con Line 162  class ProcessSession(xml.sax.handler.Con
162      end_dispatcher['layer'] = "end_layer"      end_dispatcher['layer'] = "end_layer"
163    
164      def start_classification(self, name, qname, attrs):      def start_classification(self, name, qname, attrs):
165          self.aLayer.classification.setField(attrs.get((None, 'field'), None))          field = attrs.get((None, 'field'), None)
166    
167            fieldType = attrs.get((None, 'field_type'), None)
168            dbFieldType = self.aLayer.GetFieldType(field)
169    
170            if fieldType != dbFieldType:
171                raise ValueError(_("xml field type differs from database!"))
172    
173            # setup conversion routines depending on the kind of data
174            # we will be seeing later on
175            if fieldType == FIELDTYPE_STRING:
176                self.conv = str
177            elif fieldType == FIELDTYPE_INT:
178                self.conv = lambda p: int(float(p))
179            elif fieldType == FIELDTYPE_DOUBLE:
180                self.conv = float
181    
182            self.aLayer.GetClassification().SetField(field)
183    
184      start_dispatcher['classification'] = "start_classification"      start_dispatcher['classification'] = "start_classification"
185    
186      def end_classification(self, name, qname):      def end_classification(self, name, qname):
# Line 161  class ProcessSession(xml.sax.handler.Con Line 188  class ProcessSession(xml.sax.handler.Con
188      end_dispatcher['classification'] = "end_classification"      end_dispatcher['classification'] = "end_classification"
189    
190      def start_clnull(self, name, qname, attrs):      def start_clnull(self, name, qname, attrs):
191          self.cl_data = {}          self.cl_group = ClassGroupDefault()
192            self.cl_group.SetLabel(attrs.get((None, 'label'), ""))
193            self.cl_prop = ClassGroupProperties()
194      start_dispatcher['clnull'] = "start_clnull"      start_dispatcher['clnull'] = "start_clnull"
195    
196      def end_clnull(self, name, qname):      def end_clnull(self, name, qname):
197          self.aLayer.classification.setNull(self.cl_data)          self.cl_group.SetProperties(self.cl_prop)
198          del self.cl_data          self.aLayer.GetClassification().SetDefaultGroup(self.cl_group)
199            del self.cl_group, self.cl_prop
200      end_dispatcher['clnull'] = "end_clnull"      end_dispatcher['clnull'] = "end_clnull"
201    
202      def start_clpoint(self, name, qname, attrs):      def start_clpoint(self, name, qname, attrs):
203          attrib_value = attrs.get((None, 'value'), "0")          attrib_value = attrs.get((None, 'value'), "0")
204    
205          try:          #try:
206              self.cl_value  = int(attrib_value)              #value  = Str2Num(attrib_value)
207          except:          #except:
208              self.cl_value  = attrib_value              #value  = attrib_value
209    
210            value = self.conv(attrib_value)
211    
212            self.cl_group = ClassGroupSingleton(value)
213            self.cl_group.SetLabel(attrs.get((None, 'label'), ""))
214            self.cl_prop = ClassGroupProperties()
215    
         self.cl_data = {}  
216      start_dispatcher['clpoint'] = "start_clpoint"      start_dispatcher['clpoint'] = "start_clpoint"
217    
218      def end_clpoint(self, name, qname):      def end_clpoint(self, name, qname):
219          self.aLayer.classification.addPoint(self.cl_value, self.cl_data)          self.cl_group.SetProperties(self.cl_prop)
220          del self.cl_value, self.cl_data          self.aLayer.GetClassification().AddGroup(self.cl_group)
221            del self.cl_group, self.cl_prop
222      end_dispatcher['clpoint'] = "end_clpoint"      end_dispatcher['clpoint'] = "end_clpoint"
223    
224      def start_clrange(self, name, qname, attrs):      def start_clrange(self, name, qname, attrs):
225    
226          try:          try:
227              self.cl_low = int(attrs.get((None, 'low'), "0"))              min = self.conv(attrs.get((None, 'min'), "0"))
228              self.cl_high = int(attrs.get((None, 'high'), "0"))              max = self.conv(attrs.get((None, 'max'), "0"))
229                #min = Str2Num(attrs.get((None, 'min'), "0"))
230                #max = Str2Num(attrs.get((None, 'max'), "0"))
231          except ValueError:          except ValueError:
232              raise ValueError("Classification range is not a number!")              raise ValueError(_("Classification range is not a number!"))
233    
234            self.cl_group = ClassGroupRange(min, max)
235            self.cl_group.SetLabel(attrs.get((None, 'label'), ""))
236            self.cl_prop = ClassGroupProperties()
237    
         self.cl_data = {}  
238      start_dispatcher['clrange'] = "start_clrange"      start_dispatcher['clrange'] = "start_clrange"
239    
240      def end_clrange(self, name, qname):      def end_clrange(self, name, qname):
241          self.aLayer.classification.addRange(          self.cl_group.SetProperties(self.cl_prop)
242              self.cl_low, self.cl_high, self.cl_data)          self.aLayer.GetClassification().AddGroup(self.cl_group)
243          del self.cl_low, self.cl_high, self.cl_data          del self.cl_group, self.cl_prop
244      end_dispatcher['clrange'] = "end_clrange"      end_dispatcher['clrange'] = "end_clrange"
245    
246      def start_cldata(self, name, qname, attrs):      def start_cldata(self, name, qname, attrs):
247          self.cl_data['stroke'] = parse_color(          self.cl_prop.SetLineColor(
248                                   attrs.get((None, 'stroke'), "None"))              parse_color(attrs.get((None, 'stroke'), "None")))
249          self.cl_data['stroke_width'] = int(          self.cl_prop.SetLineWidth(
250                                   attrs.get((None, 'stroke_width'), "0"))              int(attrs.get((None, 'stroke_width'), "0")))
251          self.cl_data['fill'] = parse_color(          self.cl_prop.SetFill(parse_color(attrs.get((None, 'fill'), "None")))
                                  attrs.get((None, 'fill'), "None"))  
252      start_dispatcher['cldata'] = "start_cldata"      start_dispatcher['cldata'] = "start_cldata"
253    
254      def end_cldata(self, name, qname):      def end_cldata(self, name, qname):
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