/[thuban]/trunk/thuban/Thuban/Model/layer.py
ViewVC logotype

Diff of /trunk/thuban/Thuban/Model/layer.py

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1158 by jonathan, Thu Jun 12 12:40:11 2003 UTC revision 1273 by jonathan, Fri Jun 20 17:45:49 2003 UTC
# Line 9  Line 9 
9  __version__ = "$Revision$"  __version__ = "$Revision$"
10    
11  from math import log, ceil  from math import log, ceil
12    import warnings
13    
14  from Thuban import _  from Thuban import _
15  import shapelib, shptree  import shapelib, shptree
# Line 98  class BaseLayer(TitledObject, Modifiable Line 99  class BaseLayer(TitledObject, Modifiable
99          """Determine if this layer support classifications."""          """Determine if this layer support classifications."""
100          return False          return False
101    
102        def HasShapes(self):
103            """Determine if this layer supports shapes."""
104            return False
105    
106      def GetProjection(self):      def GetProjection(self):
107          """Return the layer's projection."""          """Return the layer's projection."""
108          return self.projection          return self.projection
# Line 165  class Layer(BaseLayer): Line 170  class Layer(BaseLayer):
170    
171          self.UnsetModified()          self.UnsetModified()
172    
173        def __getattr__(self, attr):
174            """Access to some attributes for backwards compatibility
175    
176            The attributes implemented here are now held by the shapestore
177            if at all. For backwards compatibility pretend that they are
178            still there but issue a DeprecationWarning when they are
179            accessed.
180            """
181            if attr in ("table", "shapetable"):
182                value = self.store.Table()
183            elif attr == "shapefile":
184                value = self.store.Shapefile()
185            elif attr == "filename":
186                value = self.store.FileName()
187            else:
188                raise AttributeError, attr
189            warnings.warn("The Layer attribute %r is deprecated."
190                          " It's value can be accessed through the shapestore"
191                          % attr, DeprecationWarning, stacklevel = 2)
192            return value
193    
194      def SetShapeStore(self, store):      def SetShapeStore(self, store):
195          self.store = store          self.store = store
196          self.shapefile = self.store.Shapefile()          shapefile = self.store.Shapefile()
         self.shapetable = self.store.Table()  
         if hasattr(self.store, "FileName"):  
             self.filename = self.store.FileName()  
         self.table = self.shapetable  
197    
198          numshapes, shapetype, mins, maxs = self.shapefile.info()          numshapes, shapetype, mins, maxs = shapefile.info()
199          self.numshapes = numshapes          self.numshapes = numshapes
200          self.shapetype = shapelib_shapetypes[shapetype]          self.shapetype = shapelib_shapetypes[shapetype]
201    
# Line 194  class Layer(BaseLayer): Line 215  class Layer(BaseLayer):
215          else:          else:
216              maxdepth = int(ceil(log(self.numshapes / 4.0) / log(4)))              maxdepth = int(ceil(log(self.numshapes / 4.0) / log(4)))
217    
218          self.shapetree = shptree.SHPTree(self.shapefile.cobject(), 2,          self.shapetree = shptree.SHPTree(shapefile.cobject(), 2,
219                                           maxdepth)                                           maxdepth)
220          # Set the classification to None if there is a classification          # Set the classification to None if there is a classification
221          # and the new shapestore doesn't have a table with a suitable          # and the new shapestore doesn't have a table with a suitable
# Line 217  class Layer(BaseLayer): Line 238  class Layer(BaseLayer):
238      def Destroy(self):      def Destroy(self):
239          BaseLayer.Destroy(self)          BaseLayer.Destroy(self)
240          self.SetClassification(None)          self.SetClassification(None)
         self.store = self.shapetree = None  
         self.table = self.shapefile = self.shapetable = None  
241    
242      def BoundingBox(self):      def BoundingBox(self):
243          """Return the layer's bounding box in the intrinsic coordinate system.          """Return the layer's bounding box in the intrinsic coordinate system.
# Line 275  class Layer(BaseLayer): Line 294  class Layer(BaseLayer):
294          return (min(llx), min(lly), max(urx), max(ury))          return (min(llx), min(lly), max(urx), max(ury))
295    
296      def GetFieldType(self, fieldName):      def GetFieldType(self, fieldName):
297          if self.table.HasColumn(fieldName):          table = self.store.Table()
298              return self.table.Column(fieldName).type          if table.HasColumn(fieldName):
299                return table.Column(fieldName).type
300          return None          return None
301    
302        def HasShapes(self):
303            return True
304    
305      def NumShapes(self):      def NumShapes(self):
306          """Return the number of shapes in the layer"""          """Return the number of shapes in the layer"""
307          return self.numshapes          return self.numshapes
# Line 291  class Layer(BaseLayer): Line 314  class Layer(BaseLayer):
314    
315      def Shape(self, index):      def Shape(self, index):
316          """Return the shape with index index"""          """Return the shape with index index"""
317          shape = self.shapefile.read_object(index)          shape = self.store.Shapefile().read_object(index)
318    
319          if self.shapetype == SHAPETYPE_POINT:          if self.shapetype == SHAPETYPE_POINT:
320              points = shape.vertices()              points = shape.vertices()
Legend:
Removed from v.1158  
changed lines
  Added in v.1273
[email protected]
 ViewVC Help
Powered by ViewVC 1.1.26