/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/load.py
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revision 784 by jonathan, Tue Apr 29 17:30:18 2003 UTC revision 930 by jonathan, Tue May 20 15:23:03 2003 UTC
# Line 26  from Thuban.Model.table import FIELDTYPE Line 26  from Thuban.Model.table import FIELDTYPE
26    
27  from Thuban.Model.session import Session  from Thuban.Model.session import Session
28  from Thuban.Model.map import Map  from Thuban.Model.map import Map
29  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer, RasterLayer
30  from Thuban.Model.color import Color  from Thuban.Model.color import Color
31  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
32    from Thuban.Model.range import Range
33  from Thuban.Model.classification import Classification, \  from Thuban.Model.classification import Classification, \
34      ClassGroupDefault, ClassGroupSingleton, ClassGroupRange, ClassGroupMap, \      ClassGroupDefault, ClassGroupSingleton, ClassGroupRange, ClassGroupMap, \
35      ClassGroupProperties      ClassGroupProperties
# Line 164  class XMLReader(xml.sax.handler.ContentH Line 165  class XMLReader(xml.sax.handler.ContentH
165          if method_name is not None and method_name[1] is not None:          if method_name is not None and method_name[1] is not None:
166              getattr(self, method_name[1])(name, qname)              getattr(self, method_name[1])(name, qname)
167    
168        def encode(self, str):
169            """Assume that str is in Unicode and encode it into Latin1.
170            
171            If str is None, return None
172            """
173    
174            if str is not None:
175                return str.encode("latin1")
176            else:
177                return None
178    
179  class SessionLoader(XMLReader):  class SessionLoader(XMLReader):
180    
181      def __init__(self):      def __init__(self):
# Line 180  class SessionLoader(XMLReader): Line 192  class SessionLoader(XMLReader):
192               'projection'    : ("start_projection",     "end_projection"),               'projection'    : ("start_projection",     "end_projection"),
193               'parameter'     : ("start_parameter",      None),               'parameter'     : ("start_parameter",      None),
194               'layer'         : ("start_layer",          "end_layer"),               'layer'         : ("start_layer",          "end_layer"),
195                 'rasterlayer'   : ("start_rasterlayer",    "end_rasterlayer"),
196               'classification': ("start_classification", "end_classification"),               'classification': ("start_classification", "end_classification"),
197               'clnull'        : ("start_clnull",         "end_clnull"),               'clnull'        : ("start_clnull",         "end_clnull"),
198               'clpoint'       : ("start_clpoint",        "end_clpoint"),               'clpoint'       : ("start_clpoint",        "end_clpoint"),
# Line 190  class SessionLoader(XMLReader): Line 203  class SessionLoader(XMLReader):
203               'label'         : ("start_label",          None)})               'label'         : ("start_label",          None)})
204    
205      def start_session(self, name, qname, attrs):      def start_session(self, name, qname, attrs):
206          self.theSession = Session(attrs.get((None, 'title'), None))          self.theSession = Session(self.encode(attrs.get((None, 'title'), None)))
207    
208      def end_session(self, name, qname):      def end_session(self, name, qname):
209          pass          pass
# Line 198  class SessionLoader(XMLReader): Line 211  class SessionLoader(XMLReader):
211      def start_map(self, name, qname, attrs):      def start_map(self, name, qname, attrs):
212          """Start a map."""          """Start a map."""
213          self.aMap = Map(attrs.get((None, 'title'), None))          self.aMap = Map(attrs.get((None, 'title'), None))
         self.__projReceiver = self.aMap  
214    
215      def end_map(self, name, qname):      def end_map(self, name, qname):
216          self.theSession.AddMap(self.aMap)          self.theSession.AddMap(self.aMap)
217          self.__projReceiver = None          self.aMap = None
218    
219      def start_projection(self, name, qname, attrs):      def start_projection(self, name, qname, attrs):
220          self.ProjectionName = attrs.get((None, 'name'), None)          self.ProjectionName = self.encode(attrs.get((None, 'name'), None))
221          self.ProjectionParams = [ ]          self.ProjectionParams = [ ]
222    
223      def end_projection(self, name, qname):      def end_projection(self, name, qname):
224          self.__projReceiver.SetProjection(          if self.aLayer is not None:
225                obj = self.aLayer
226            elif self.aMap is not None:
227                obj = self.aMap
228            else:
229                assert False, "projection tag out of context"
230                pass
231    
232            obj.SetProjection(
233              Projection(self.ProjectionParams, self.ProjectionName))              Projection(self.ProjectionParams, self.ProjectionName))
234    
235      def start_parameter(self, name, qname, attrs):      def start_parameter(self, name, qname, attrs):
# Line 224  class SessionLoader(XMLReader): Line 244  class SessionLoader(XMLReader):
244          attrs which may be a dictionary as well as the normal SAX attrs          attrs which may be a dictionary as well as the normal SAX attrs
245          object and bind it to self.aLayer.          object and bind it to self.aLayer.
246          """          """
247          title = attrs.get((None, 'title'), "")          title = self.encode(attrs.get((None, 'title'), ""))
248          filename = attrs.get((None, 'filename'), "")          filename = attrs.get((None, 'filename'), "")
249          filename = os.path.join(self.GetDirectory(), filename)          filename = os.path.join(self.GetDirectory(), filename)
250          visible  = attrs.get((None, 'visible'), "true")          filename = self.encode(filename)
251            visible  = self.encode(attrs.get((None, 'visible'), "true")) != "false"
252          fill = parse_color(attrs.get((None, 'fill'), "None"))          fill = parse_color(attrs.get((None, 'fill'), "None"))
253          stroke = parse_color(attrs.get((None, 'stroke'), "#000000"))          stroke = parse_color(attrs.get((None, 'stroke'), "#000000"))
254          stroke_width = int(attrs.get((None, 'stroke_width'), "1"))          stroke_width = int(attrs.get((None, 'stroke_width'), "1"))
# Line 235  class SessionLoader(XMLReader): Line 256  class SessionLoader(XMLReader):
256                                    self.theSession.OpenShapefile(filename),                                    self.theSession.OpenShapefile(filename),
257                                    fill = fill, stroke = stroke,                                    fill = fill, stroke = stroke,
258                                    lineWidth = stroke_width,                                    lineWidth = stroke_width,
259                                    visible = visible != "false")                                    visible = visible)
   
         self.__projReceiver = self.aLayer  
260    
261      def end_layer(self, name, qname):      def end_layer(self, name, qname):
262          self.aMap.AddLayer(self.aLayer)          self.aMap.AddLayer(self.aLayer)
263          self.__projReceiver = None          self.aLayer = None
264    
265        def start_rasterlayer(self, name, qname, attrs, layer_class = RasterLayer):
266            title = self.encode(attrs.get((None, 'title'), ""))
267            filename = attrs.get((None, 'filename'), "")
268            filename = os.path.join(self.GetDirectory(), filename)
269            filename = self.encode(filename)
270            visible  = self.encode(attrs.get((None, 'visible'), "true")) != "false"
271    
272            self.aLayer = layer_class(title, filename, visible = visible)
273    
274        def end_rasterlayer(self, name, qname):
275            self.aMap.AddLayer(self.aLayer)
276            self.aLayer = None
277    
278      def start_classification(self, name, qname, attrs):      def start_classification(self, name, qname, attrs):
279          field = attrs.get((None, 'field'), None)          field = attrs.get((None, 'field'), None)
# Line 263  class SessionLoader(XMLReader): Line 295  class SessionLoader(XMLReader):
295    
296          self.aLayer.GetClassification().SetField(field)          self.aLayer.GetClassification().SetField(field)
297    
   
298      def end_classification(self, name, qname):      def end_classification(self, name, qname):
299          pass          pass
300    
301      def start_clnull(self, name, qname, attrs):      def start_clnull(self, name, qname, attrs):
302          self.cl_group = ClassGroupDefault()          self.cl_group = ClassGroupDefault()
303          self.cl_group.SetLabel(attrs.get((None, 'label'), ""))          self.cl_group.SetLabel(self.encode(attrs.get((None, 'label'), "")))
304          self.cl_prop = ClassGroupProperties()          self.cl_prop = ClassGroupProperties()
305    
306      def end_clnull(self, name, qname):      def end_clnull(self, name, qname):
# Line 283  class SessionLoader(XMLReader): Line 314  class SessionLoader(XMLReader):
314          value = self.conv(attrib_value)          value = self.conv(attrib_value)
315    
316          self.cl_group = ClassGroupSingleton(value)          self.cl_group = ClassGroupSingleton(value)
317          self.cl_group.SetLabel(attrs.get((None, 'label'), ""))          self.cl_group.SetLabel(self.encode(attrs.get((None, 'label'), "")))
318          self.cl_prop = ClassGroupProperties()          self.cl_prop = ClassGroupProperties()
319    
320    
# Line 294  class SessionLoader(XMLReader): Line 325  class SessionLoader(XMLReader):
325    
326      def start_clrange(self, name, qname, attrs):      def start_clrange(self, name, qname, attrs):
327    
328            range = attrs.get((None, 'range'), None)
329            # for backward compatibility (min/max are not saved)
330            min   = attrs.get((None, 'min'), None)
331            max   = attrs.get((None, 'max'), None)
332    
333          try:          try:
334              min = self.conv(attrs.get((None, 'min'), "0"))              if range is not None:
335              max = self.conv(attrs.get((None, 'max'), "0"))                  self.cl_group = ClassGroupRange(Range(range))
336                elif min is not None and max is not None:
337                    self.cl_group = ClassGroupRange(self.conv(min), self.conv(max))
338                else:
339                    self.cl_group = ClassGroupRange(Range(None))
340    
341          except ValueError:          except ValueError:
342              raise ValueError(_("Classification range is not a number!"))              raise ValueError(_("Classification range is not a number!"))
343    
         self.cl_group = ClassGroupRange(min, max)  
344          self.cl_group.SetLabel(attrs.get((None, 'label'), ""))          self.cl_group.SetLabel(attrs.get((None, 'label'), ""))
345          self.cl_prop = ClassGroupProperties()          self.cl_prop = ClassGroupProperties()
346    
# Line 333  class SessionLoader(XMLReader): Line 373  class SessionLoader(XMLReader):
373      def start_label(self, name, qname, attrs):      def start_label(self, name, qname, attrs):
374          x = float(attrs[(None, 'x')])          x = float(attrs[(None, 'x')])
375          y = float(attrs[(None, 'y')])          y = float(attrs[(None, 'y')])
376          text = attrs[(None, 'text')]          text = self.encode(attrs[(None, 'text')])
377          halign = attrs[(None, 'halign')]          halign = attrs[(None, 'halign')]
378          valign = attrs[(None, 'valign')]          valign = attrs[(None, 'valign')]
379          self.aLayer.AddLabel(x, y, text, halign = halign, valign = valign)          self.aLayer.AddLabel(x, y, text, halign = halign, valign = valign)
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