/[thuban]/trunk/thuban/Thuban/Model/layer.py
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revision 412 by jonathan, Wed Feb 19 16:51:50 2003 UTC revision 481 by jonathan, Thu Mar 6 16:46:36 2003 UTC
# Line 20  from messages import LAYER_PROJECTION_CH Line 20  from messages import LAYER_PROJECTION_CH
20    
21  from color import Color  from color import Color
22    
23  from classification import Classification  import classification
24    
25  from table import Table  from table import Table
26    
# Line 109  class Layer(BaseLayer): Line 109  class Layer(BaseLayer):
109      def __init__(self, title, filename, projection = None,      def __init__(self, title, filename, projection = None,
110                   fill = Color.None,                   fill = Color.None,
111                   stroke = Color.Black,                   stroke = Color.Black,
112                   stroke_width = 1,                   lineWidth = 1,
113                   visible = 1):                   visible = 1):
114          """Initialize the layer.          """Initialize the layer.
115    
# Line 118  class Layer(BaseLayer): Line 118  class Layer(BaseLayer):
118          projection -- the projection object. Its Inverse method is          projection -- the projection object. Its Inverse method is
119                 assumed to map the layer's coordinates to lat/long                 assumed to map the layer's coordinates to lat/long
120                 coordinates                 coordinates
121          fill -- the fill color or None if the shapes are not filled          fill -- the fill color or Color.None if the shapes are not filled
122          stroke -- the stroke color or None if the shapes are not stroked          stroke -- the stroke color or Color.None if the shapes are not stroked
123          visible -- boolean. If true the layer is visible.          visible -- boolean. If true the layer is visible.
124    
125          colors are expected to be instances of Color class          colors are expected to be instances of Color class
# Line 142  class Layer(BaseLayer): Line 142  class Layer(BaseLayer):
142          self.shapetable = Table(filename)          self.shapetable = Table(filename)
143          self.table = self.shapetable          self.table = self.shapetable
144    
145          self.__classification = Classification(self)          #
146          self.__classification.SetDefaultStroke(stroke)          # this is really important so that when the classification class
147          self.__classification.SetDefaultStrokeWidth(stroke_width)          # tries to set its parent layer the variable will exist
148            #
149            self.__classification = None
150    
151            self.SetClassification(classification.Classification(self))
152            self.__classification.SetDefaultLineColor(stroke)
153            self.__classification.SetDefaultLineWidth(lineWidth)
154          self.__classification.SetDefaultFill(fill)          self.__classification.SetDefaultFill(fill)
155    
156          self.UnsetModified()          self.UnsetModified()
# Line 208  class Layer(BaseLayer): Line 214  class Layer(BaseLayer):
214          else:          else:
215              return None              return None
216    
217        def GetFieldType(self, fieldName):
218            self.open_shapefile()
219            info = self.table.field_info_by_name(fieldName)
220            if info is not None:
221                return info[0]
222            else:
223                return None
224    
225      def NumShapes(self):      def NumShapes(self):
226          """Return the number of shapes in the layer"""          """Return the number of shapes in the layer"""
227          self.open_shapefile()          self.open_shapefile()
# Line 254  class Layer(BaseLayer): Line 268  class Layer(BaseLayer):
268          return self.__classification          return self.__classification
269    
270      def SetClassification(self, clazz):      def SetClassification(self, clazz):
271    
272            # prevent infinite recursion when calling SetLayer()
273            if clazz == self.__classification:
274                return
275    
276          self.__classification = clazz          self.__classification = clazz
277            self.__classification.SetLayer(self)
278          self.changed(LAYER_LEGEND_CHANGED, self)          self.changed(LAYER_LEGEND_CHANGED, self)
279    
280      def TreeInfo(self):      def TreeInfo(self):
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