/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/Model/classification.py
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revision 637 by jonathan, Thu Apr 10 14:35:03 2003 UTC revision 960 by jonathan, Wed May 21 17:23:11 2003 UTC
# Line 23  on the mapping algorithm. Line 23  on the mapping algorithm.
23  # fix for people using python2.1  # fix for people using python2.1
24  from __future__ import nested_scopes  from __future__ import nested_scopes
25    
26  import copy  import copy, operator
27    
28  from Thuban import _  from Thuban import _
29    
30  from types import *  import types
31    
32  from messages import \  from messages import \
33      LAYER_PROJECTION_CHANGED, \      LAYER_PROJECTION_CHANGED, \
# Line 35  from messages import \ Line 35  from messages import \
35      LAYER_VISIBILITY_CHANGED      LAYER_VISIBILITY_CHANGED
36    
37  from Thuban.Model.color import Color  from Thuban.Model.color import Color
38    from Thuban.Model.range import Range
39    
40  import Thuban.Model.layer  import Thuban.Model.layer
41    
# Line 222  class Classification: Line 223  class Classification:
223    
224          lineWidth -- an integer > 0.          lineWidth -- an integer > 0.
225          """          """
226          assert isinstance(lineWidth, IntType)          assert isinstance(lineWidth, types.IntType)
227          self.GetDefaultGroup().GetProperties().SetLineWidth(lineWidth)          self.GetDefaultGroup().GetProperties().SetLineWidth(lineWidth)
228          self.__SendNotification()          self.__SendNotification()
229                    
# Line 449  class ClassGroupProperties: Line 450  class ClassGroupProperties:
450                    
451      def GetLineColor(self):      def GetLineColor(self):
452          """Return the line color as a Color object."""          """Return the line color as a Color object."""
453          return self.stroke          return self.__stroke
454    
455      def SetLineColor(self, color):      def SetLineColor(self, color):
456          """Set the line color.          """Set the line color.
# Line 458  class ClassGroupProperties: Line 459  class ClassGroupProperties:
459          """          """
460    
461          assert isinstance(color, Color)          assert isinstance(color, Color)
462          self.stroke = color          self.__stroke = color
463    
464      def GetLineWidth(self):      def GetLineWidth(self):
465          """Return the line width."""          """Return the line width."""
466          return self.strokeWidth          return self.__strokeWidth
467    
468      def SetLineWidth(self, lineWidth):      def SetLineWidth(self, lineWidth):
469          """Set the line width.          """Set the line width.
470    
471          lineWidth -- the new line width. This must be > 0.          lineWidth -- the new line width. This must be > 0.
472          """          """
473          assert isinstance(lineWidth, IntType)          assert isinstance(lineWidth, types.IntType)
474          if (lineWidth < 1):          if (lineWidth < 1):
475              raise ValueError(_("lineWidth < 1"))              raise ValueError(_("lineWidth < 1"))
476    
477          self.strokeWidth = lineWidth          self.__strokeWidth = lineWidth
478    
479      def GetFill(self):      def GetFill(self):
480          """Return the fill color as a Color object."""          """Return the fill color as a Color object."""
481          return self.fill          return self.__fill
482    
483      def SetFill(self, fill):      def SetFill(self, fill):
484          """Set the fill color.          """Set the fill color.
# Line 486  class ClassGroupProperties: Line 487  class ClassGroupProperties:
487          """          """
488    
489          assert isinstance(fill, Color)          assert isinstance(fill, Color)
490          self.fill = fill          self.__fill = fill
491    
492      def __eq__(self, other):      def __eq__(self, other):
493          """Return true if 'props' has the same attributes as this class"""          """Return true if 'props' has the same attributes as this class"""
494    
495            #
496            # using 'is' over '==' results in a huge performance gain
497            # in the renderer
498            #
499          return isinstance(other, ClassGroupProperties)   \          return isinstance(other, ClassGroupProperties)   \
500              and self.stroke      == other.GetLineColor() \              and (self.__stroke is other.__stroke or      \
501              and self.strokeWidth == other.GetLineWidth() \                   self.__stroke == other.__stroke)        \
502              and self.fill        == other.GetFill()              and (self.__fill is other.__fill or          \
503                     self.__fill == other.__fill)            \
504                and self.__strokeWidth == other.__strokeWidth
505    
506      def __ne__(self, other):      def __ne__(self, other):
507          return not self.__eq__(other)          return not self.__eq__(other)
# Line 505  class ClassGroupProperties: Line 512  class ClassGroupProperties:
512      def __deepcopy__(self):      def __deepcopy__(self):
513          return ClassGroupProperties(self)          return ClassGroupProperties(self)
514    
515        def __repr__(self):
516            return repr((self.__stroke, self.__strokeWidth, self.__fill))
517    
518  class ClassGroup:  class ClassGroup:
519      """A base class for all Groups within a Classification"""      """A base class for all Groups within a Classification"""
520    
# Line 533  class ClassGroup: Line 543  class ClassGroup:
543          label -- a string representing the Group's label. This must          label -- a string representing the Group's label. This must
544                   not be None.                   not be None.
545          """          """
546          assert isinstance(label, StringType)          assert isinstance(label, types.StringTypes)
547          self.label = label          self.label = label
548    
549      def GetDisplayText(self):      def GetDisplayText(self):
# Line 572  class ClassGroup: Line 582  class ClassGroup:
582    
583      def __eq__(self, other):      def __eq__(self, other):
584          return isinstance(other, ClassGroup) \          return isinstance(other, ClassGroup) \
585                and self.label == other.label \
586              and self.GetProperties() == other.GetProperties()              and self.GetProperties() == other.GetProperties()
587    
588      def __ne__(self, other):      def __ne__(self, other):
589          return not self.__eq__(other)          return not self.__eq__(other)
590    
591        def __repr__(self):
592            return repr(self.label) + ", " + repr(self.GetProperties())
593            
594  class ClassGroupSingleton(ClassGroup):  class ClassGroupSingleton(ClassGroup):
595      """A Group that is associated with a single value."""      """A Group that is associated with a single value."""
# Line 605  class ClassGroupSingleton(ClassGroup): Line 618  class ClassGroupSingleton(ClassGroup):
618    
619      def GetValue(self):      def GetValue(self):
620          """Return the associated value."""          """Return the associated value."""
621          return self.value          return self.__value
622    
623      def SetValue(self, value):      def SetValue(self, value):
624          """Associate this Group with the given value."""          """Associate this Group with the given value."""
625          self.value = value          self.__value = value
626    
627      def Matches(self, value):      def Matches(self, value):
628          """Determine if the given value matches the associated Group value."""          """Determine if the given value matches the associated Group value."""
629    
630          """Returns True if the value matches, False otherwise."""          """Returns True if the value matches, False otherwise."""
631    
632          return self.value == value          return self.__value == value
633    
634      def GetDisplayText(self):      def GetDisplayText(self):
635          label = self.GetLabel()          label = self.GetLabel()
# Line 628  class ClassGroupSingleton(ClassGroup): Line 641  class ClassGroupSingleton(ClassGroup):
641      def __eq__(self, other):      def __eq__(self, other):
642          return ClassGroup.__eq__(self, other) \          return ClassGroup.__eq__(self, other) \
643              and isinstance(other, ClassGroupSingleton) \              and isinstance(other, ClassGroupSingleton) \
644              and self.GetValue() == other.GetValue()              and self.__value == other.__value
645    
646        def __repr__(self):
647            return "(" + repr(self.__value) + ", " + ClassGroup.__repr__(self) + ")"
648    
649  class ClassGroupDefault(ClassGroup):  class ClassGroupDefault(ClassGroup):
650      """The default Group. When values do not match any other      """The default Group. When values do not match any other
# Line 667  class ClassGroupDefault(ClassGroup): Line 683  class ClassGroupDefault(ClassGroup):
683              and isinstance(other, ClassGroupDefault) \              and isinstance(other, ClassGroupDefault) \
684              and self.GetProperties() == other.GetProperties()              and self.GetProperties() == other.GetProperties()
685    
686        def __repr__(self):
687            return "(" + ClassGroup.__repr__(self) + ")"
688    
689  class ClassGroupRange(ClassGroup):  class ClassGroupRange(ClassGroup):
690      """A Group that represents a range of values that map to the same      """A Group that represents a range of values that map to the same
691         set of properties."""         set of properties."""
# Line 686  class ClassGroupRange(ClassGroup): Line 705  class ClassGroupRange(ClassGroup):
705          label -- a label for this group.          label -- a label for this group.
706          """          """
707    
708          ClassGroup.__init__(self, label, props, None)          ClassGroup.__init__(self, label, props, group)
   
         self.min = self.max = 0  
709    
710            #self.__min = self.__max = 0
711            #self.__range = Range("[" + repr(float(min)) + ";" +
712                                       #repr(float(max)) + "[")
713          self.SetRange(min, max)          self.SetRange(min, max)
714    
715      def __copy__(self):      def __copy__(self):
716          return ClassGroupRange(self.GetMin(),          return ClassGroupRange(min = self.__range,
717                                 self.GetMax(),                                 max = None,
718                                 self.GetProperties(),                                 props = self.GetProperties(),
719                                 self.GetLabel())                                 label = self.GetLabel())
720    
721      def __deepcopy__(self, memo):      def __deepcopy__(self, memo):
722          return ClassGroupRange(copy.copy(self.GetMin()),          return ClassGroupRange(min = copy.copy(self.__range),
723                                 copy.copy(self.GetMax()),                                 max = copy.copy(self.GetMax()),
724                                 group = self)                                 group = self)
725    
726      def GetMin(self):      def GetMin(self):
727          """Return the range's minimum value."""          """Return the range's minimum value."""
728          return self.min          return self.__range.GetRange()[1]
729    
730      def SetMin(self, min):      def SetMin(self, min):
731          """Set the range's minimum value.          """Set the range's minimum value.
# Line 714  class ClassGroupRange(ClassGroup): Line 734  class ClassGroupRange(ClassGroup):
734                 maximum value. Use SetRange() to change both min and max values.                 maximum value. Use SetRange() to change both min and max values.
735          """          """
736            
737          self.SetRange(min, self.max)          self.SetRange(min, self.__range.GetRange()[2])
738    
739      def GetMax(self):      def GetMax(self):
740          """Return the range's maximum value."""          """Return the range's maximum value."""
741          return self.max          return self.__range.GetRange()[2]
742    
743      def SetMax(self, max):      def SetMax(self, max):
744          """Set the range's maximum value.          """Set the range's maximum value.
# Line 726  class ClassGroupRange(ClassGroup): Line 746  class ClassGroupRange(ClassGroup):
746          max -- the new maximum. Note that this must be greater than the current          max -- the new maximum. Note that this must be greater than the current
747                 minimum value. Use SetRange() to change both min and max values.                 minimum value. Use SetRange() to change both min and max values.
748          """          """
749          self.SetRange(self.min, max)          self.SetRange(self.__range.GetRange()[1], max)
750    
751      def SetRange(self, min, max):      def SetRange(self, min, max = None):
752          """Set a new range.          """Set a new range.
753    
754          Note that min must be strictly less than max.          Note that min must be strictly less than max.
# Line 737  class ClassGroupRange(ClassGroup): Line 757  class ClassGroupRange(ClassGroup):
757          min -- the new maximum value          min -- the new maximum value
758          """          """
759    
760          if min >= max:          if isinstance(min, Range):
761              raise ValueError(_("ClassGroupRange: %i(min) >= %i(max)!") %              self.__range = min
762                               (min, max))          else:
763          self.min = min              if max is None:
764          self.max = max                  raise ValueError()
765    
766                self.__range = Range(("[", min, max, "["))
767    
768      def GetRange(self):      def GetRange(self):
769          """Return the range as a tuple (min, max)"""          """Return the range as a string"""
770          return (self.min, self.max)          #return (self.__min, self.__max)
771            return self.__range.string(self.__range.GetRange())
772    
773      def Matches(self, value):      def Matches(self, value):
774          """Determine if the given value lies with the current range.          """Determine if the given value lies with the current range.
# Line 753  class ClassGroupRange(ClassGroup): Line 776  class ClassGroupRange(ClassGroup):
776          The following check is used: min <= value < max.          The following check is used: min <= value < max.
777          """          """
778    
779          return self.min <= value < self.max          return operator.contains(self.__range, value)
780            #return self.__min <= value < self.__max
781    
782      def GetDisplayText(self):      def GetDisplayText(self):
783          label = self.GetLabel()          label = self.GetLabel()
784    
785          if label != "": return label          if label != "": return label
786    
787          return _("%s - %s") % (self.GetMin(), self.GetMax())          #return _("%s - %s") % (self.GetMin(), self.GetMax())
788            #return repr(self.__range)
789            return self.__range.string(self.__range.GetRange())
790    
791      def __eq__(self, other):      def __eq__(self, other):
792          return ClassGroup.__eq__(self, other) \          return ClassGroup.__eq__(self, other) \
793              and isinstance(other, ClassGroupRange) \              and isinstance(other, ClassGroupRange) \
794              and self.GetRange() == other.GetRange()              and self.__range == other.__range
795                #and self.__min == other.__min \
796                #and self.__max == other.__max
797    
798        def __repr__(self):
799            return "(" + str(self.__range) + ClassGroup.__repr__(self) + ")"
800            #return "(" + repr(self.__min) + ", " + repr(self.__max) + ", " + \
801                   #ClassGroup.__repr__(self) + ")"
802    
803  class ClassGroupMap(ClassGroup):  class ClassGroupMap(ClassGroup):
804      """Currently, this class is not used."""      """Currently, this class is not used."""
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