/[thuban]/trunk/thuban/Thuban/UI/classifier.py
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revision 519 by jonathan, Tue Mar 11 22:27:35 2003 UTC revision 2597 by bh, Thu Apr 7 19:46:29 2005 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2003 by Intevation GmbH  # Copyright (c) 2003-2005 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jonathan Coles <[email protected]>  # Jan-Oliver Wagner <[email protected]> (2003-2004)
4    # Martin Schulze <[email protected]> (2004)
5    # Frank Koormann <[email protected]> (2003)
6    # Bernhard Herzog <[email protected]> (2003)
7    # Jonathan Coles <[email protected]> (2003)
8  #  #
9  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
10  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 8  Line 12 
12  """Dialog for classifying how layers are displayed"""  """Dialog for classifying how layers are displayed"""
13    
14  __version__ = "$Revision$"  __version__ = "$Revision$"
15    # $Source$
16    # $Id$
17    
18  import copy  import copy
19    
# Line 18  from wxPython.wx import * Line 24  from wxPython.wx import *
24  from wxPython.grid import *  from wxPython.grid import *
25    
26  from Thuban import _  from Thuban import _
27  from Thuban.common import *  from Thuban.UI.common import Color2wxColour, wxColour2Color
 from Thuban.UI.common import *  
28    
29  from Thuban.Model.classification import *  from Thuban.Model.messages import MAP_LAYERS_REMOVED, LAYER_SHAPESTORE_REPLACED
30    from Thuban.Model.range import Range
31    from Thuban.Model.classification import \
32        Classification, ClassGroupDefault, \
33        ClassGroupSingleton, ClassGroupRange, ClassGroupMap, \
34        ClassGroupProperties
35    
36  from Thuban.Model.color import Color  from Thuban.Model.color import Transparent
37    
38  from Thuban.Model.layer import Layer, SHAPETYPE_ARC, SHAPETYPE_POLYGON, SHAPETYPE_POINT  from Thuban.Model.layer import Layer
39    from Thuban.Model.data import SHAPETYPE_ARC, SHAPETYPE_POLYGON, SHAPETYPE_POINT
40    
41  from dialogs import NonModalDialog  from Thuban.UI.classgen import ClassGenDialog
42    from Thuban.UI.colordialog import ColorDialog
43    
44  # widget id's  from Thuban.UI.layerproperties import LayerProperties
45  ID_PROPERTY_SELECT = 4010  from messages import MAP_REPLACED
 ID_CLASS_TABLE = 40011  
46    
 ID_CLASSIFY_OK = 4001  
 ID_CLASSIFY_CANCEL = 4002  
 ID_CLASSIFY_ADD = 4003  
 ID_CLASSIFY_GENRANGE = 4004  
 ID_CLASSIFY_REMOVE = 4005  
 ID_CLASSIFY_MOVEUP = 4006  
 ID_CLASSIFY_MOVEDOWN = 4007  
 ID_CLASSIFY_APPLY = 4008  
47    
48  # table columns  # table columns
49  COL_SYMBOL = 0  COL_VISIBLE = 0
50  COL_VALUE  = 1  COL_SYMBOL  = 1
51  COL_LABEL  = 2  COL_VALUE   = 2
52    COL_LABEL   = 3
53    NUM_COLS    = 4
54    
55  # indices into the client data lists in Classifier.fields  # indices into the client data lists in Classifier.fields
56  FIELD_CLASS = 0  FIELD_CLASS = 0
# Line 59  FIELD_NAME = 2 Line 64  FIELD_NAME = 2
64  import weakref  import weakref
65  class ClassGrid(wxGrid):  class ClassGrid(wxGrid):
66    
67      def __init__(self, parent):  
68        def __init__(self, parent, classifier):
69          """Constructor.          """Constructor.
70    
71          parent -- the parent window          parent -- the parent window
# Line 67  class ClassGrid(wxGrid): Line 73  class ClassGrid(wxGrid):
73          clazz -- the working classification that this grid should          clazz -- the working classification that this grid should
74                   use for display.                   use for display.
75          """          """
76            wxGrid.__init__(self, parent, -1, style = 0)
77    
78            self.classifier = classifier
79    
80          #wxGrid.__init__(self, parent, ID_CLASS_TABLE, size = (340, 160))          self.currentSelection = []
         wxGrid.__init__(self, parent, ID_CLASS_TABLE)  
         #self.SetTable(ClassTable(fieldData, layer.ShapeType(), self), True)  
81    
82          EVT_GRID_CELL_LEFT_DCLICK(self, self._OnCellDClick)          EVT_GRID_CELL_LEFT_DCLICK(self, self._OnCellDClick)
83          EVT_GRID_RANGE_SELECT(self, self._OnSelectedRange)          EVT_GRID_RANGE_SELECT(self, self._OnSelectedRange)
84          EVT_GRID_SELECT_CELL(self, self._OnSelectedCell)          EVT_GRID_SELECT_CELL(self, self._OnSelectedCell)
85            EVT_GRID_COL_SIZE(self, self._OnCellResize)
86            EVT_GRID_ROW_SIZE(self, self._OnCellResize)
87    
88          self.currentSelection = []      #def GetCellAttr(self, row, col):
89            #print "GetCellAttr ", row, col
90            #wxGrid.GetCellAttr(self, row, col)
91    
92      def CreateTable(self, clazz, shapeType):      def CreateTable(self, clazz, fieldType, shapeType, group = None):
93    
94          assert(isinstance(clazz, Classification))          assert isinstance(clazz, Classification)
95    
         self.shapeType = shapeType  
96          table = self.GetTable()          table = self.GetTable()
97          if table is None:          if table is None:
98              w = self.GetDefaultColSize() * 3 + self.GetDefaultRowLabelSize()              w = self.GetDefaultColSize() * NUM_COLS \
99              h = self.GetDefaultRowSize() * 4 + self.GetDefaultColLabelSize()                  + self.GetDefaultRowLabelSize()
100                h = self.GetDefaultRowSize() * 4 \
101                    + self.GetDefaultColLabelSize()
102    
103              self.SetDimensions(-1, -1, w, h)              self.SetDimensions(-1, -1, w, h)
104              self.SetSizeHints(w, h, -1, -1)              self.SetSizeHints(w, h, -1, -1)
105              self.SetTable(ClassTable(clazz, self.shapeType, self), True)              table = ClassTable(self)
106          else:              self.SetTable(table, True)
107              table.Reset(clazz, self.shapeType)  
108    
109          self.SetSelectionMode(wxGrid.wxGridSelectRows)          self.SetSelectionMode(wxGrid.wxGridSelectRows)
110          self.ClearSelection()          self.ClearSelection()
111    
112            table.Reset(clazz, fieldType, shapeType, group)
113    
114      def GetCurrentSelection(self):      def GetCurrentSelection(self):
115          """Return the currently highlighted rows as an increasing list          """Return the currently highlighted rows as an increasing list
116             of row numbers."""             of row numbers."""
# Line 103  class ClassGrid(wxGrid): Line 118  class ClassGrid(wxGrid):
118          sel.sort()          sel.sort()
119          return sel          return sel
120    
121      def SetCellRenderer(self, row, col):      def GetSelectedRows(self):
122          raise ValueError(_("Must not allow setting of renderer in ClassGrid!"))          return self.GetCurrentSelection()
123    
124        #def SetCellRenderer(self, row, col, renderer):
125            #raise ValueError(_("Must not allow setting of renderer in ClassGrid!"))
126    
127      #      #
128      # [Set|Get]Table is taken from http://wiki.wxpython.org      # [Set|Get]Table is taken from http://wiki.wxpython.org
# Line 140  class ClassGrid(wxGrid): Line 158  class ClassGrid(wxGrid):
158              group = self.GetTable().GetClassGroup(sel[0])              group = self.GetTable().GetClassGroup(sel[0])
159              if isinstance(group, ClassGroupDefault):              if isinstance(group, ClassGroupDefault):
160                  wxMessageDialog(self,                  wxMessageDialog(self,
161                                  "The Default group cannot be removed.",                                  _("The Default group cannot be removed."),
162                                  style = wxOK | wxICON_EXCLAMATION).ShowModal()                                  style = wxOK | wxICON_EXCLAMATION).ShowModal()
163                  return                  return
164                    
# Line 169  class ClassGrid(wxGrid): Line 187  class ClassGrid(wxGrid):
187                  r = self.GetNumberRows() - 1                  r = self.GetNumberRows() - 1
188              self.SelectRow(r)              self.SelectRow(r)
189                    
190    
191        def SelectGroup(self, group, makeVisible = True):
192            if group is None: return
193    
194            assert isinstance(group, ClassGroup)
195    
196            table = self.GetTable()
197    
198            assert table is not None
199    
200            for i in range(table.GetNumberRows()):
201                g = table.GetClassGroup(i)
202                if g is group:
203                    self.SelectRow(i)
204                    if makeVisible:
205                        self.MakeCellVisible(i, 0)
206                    break
207    
208  #  #
209  # XXX: This isn't working, and there is no way to deselect rows wxPython!  # XXX: This isn't working, and there is no way to deselect rows wxPython!
210  #  #
# Line 181  class ClassGrid(wxGrid): Line 217  class ClassGrid(wxGrid):
217  #                                  sel = False))  #                                  sel = False))
218    
219      def _OnCellDClick(self, event):      def _OnCellDClick(self, event):
220          """Handle a double on a cell."""          """Handle a double click on a cell."""
221    
222          r = event.GetRow()          r = event.GetRow()
223          c = event.GetCol()          c = event.GetCol()
         if c == COL_SYMBOL:  
             prop = self.GetTable().GetValueAsCustom(r, c, None)  
             #prop = group.GetProperties()  
224    
225              # get a new ClassGroupProperties object and copy the          if c == COL_SYMBOL:
226              # values over to our current object              self.classifier.EditSymbol(r)
227              propDlg = SelectPropertiesDialog(NULL, prop, self.shapeType)          else:
228              if propDlg.ShowModal() == wxID_OK:              event.Skip()
                 new_prop = propDlg.GetClassGroupProperties()  
                 #prop.SetProperties(new_prop)  
                 self.GetTable().SetValueAsCustom(r, c, None, new_prop)  
             propDlg.Destroy()  
229    
230      #      #
231      # _OnSelectedRange() and _OnSelectedCell() were borrowed      # _OnSelectedRange() and _OnSelectedCell() were borrowed
# Line 223  class ClassGrid(wxGrid): Line 252  class ClassGrid(wxGrid):
252          #self.ConfigureForSelection()          #self.ConfigureForSelection()
253          event.Skip()          event.Skip()
254    
255        def _OnCellResize(self, event):
256            self.FitInside()
257            event.Skip()
258    
259  class ClassTable(wxPyGridTableBase):  class ClassTable(wxPyGridTableBase):
260      """Represents the underlying data structure for the grid."""      """Represents the underlying data structure for the grid."""
261    
262      NUM_COLS = 3      __col_labels = [_("Visible"), _("Symbol"), _("Value"), _("Label")]
263    
     __col_labels = [_("Symbol"), _("Value"), _("Label")]  
264    
265      def __init__(self, clazz, shapeType, view = None):      def __init__(self, view = None):
266          """Constructor.          """Constructor.
267    
268          shapeType -- the type of shape that the layer uses          shapeType -- the type of shape that the layer uses
# Line 240  class ClassTable(wxPyGridTableBase): Line 272  class ClassTable(wxPyGridTableBase):
272    
273          wxPyGridTableBase.__init__(self)          wxPyGridTableBase.__init__(self)
274    
275          self.SetView(view)          assert len(ClassTable.__col_labels) == NUM_COLS
276          self.tdata = []  
277            self.clazz = None
278            self.__colAttr = {}
279    
280          self.Reset(clazz, shapeType)          self.SetView(view)
281    
282      def Reset(self, clazz, shapeType):      def Reset(self, clazz, fieldType, shapeType, group = None):
283          """Reset the table with the given data.          """Reset the table with the given data.
284    
285          This is necessary because wxWindows does not allow a grid's          This is necessary because wxWindows does not allow a grid's
# Line 259  class ClassTable(wxPyGridTableBase): Line 293  class ClassTable(wxPyGridTableBase):
293          shapeType -- the type of shape that the layer uses          shapeType -- the type of shape that the layer uses
294          """          """
295    
296          assert(isinstance(clazz, Classification))          assert isinstance(clazz, Classification)
297    
298          self.GetView().BeginBatch()          self.GetView().BeginBatch()
299    
300          self.fieldType = clazz.GetFieldType()          self.fieldType = fieldType
301          self.shapeType = shapeType          self.shapeType = shapeType
302    
303          old_len = len(self.tdata)          self.SetClassification(clazz, group)
304            self.__Modified(-1)
305    
306          self.tdata = []          self.__colAttr = {}
307    
308            attr = wxGridCellAttr()
309            attr.SetEditor(wxGridCellBoolEditor())
310            attr.SetRenderer(wxGridCellBoolRenderer())
311            attr.SetAlignment(wxALIGN_CENTER, wxALIGN_CENTER)
312            self.__colAttr[COL_VISIBLE] = attr
313    
314            attr = wxGridCellAttr()
315            attr.SetRenderer(ClassRenderer(self.shapeType))
316            attr.SetReadOnly()
317            self.__colAttr[COL_SYMBOL] = attr
318    
319            self.GetView().EndBatch()
320            self.GetView().FitInside()
321    
322        def GetClassification(self):
323            """Return the current classification."""
324            return self.clazz
325    
326        def SetClassification(self, clazz, group = None):
327            """Fill in the table with the given classification.
328            Select the given group if group is not None.
329            """
330    
331            self.GetView().BeginBatch()
332    
333            old_len = self.GetNumberRows()
334    
335            row = -1
336            self.clazz = clazz
337    
338            self.__NotifyRowChanges(old_len, self.GetNumberRows())
339    
340          #          #
341          # copy the data out of the classification and into our          # XXX: this is dead code at the moment
         # array  
342          #          #
343          for p in clazz:          if row > -1:
344              np = copy.deepcopy(p)              self.GetView().ClearSelection()
345              self.__SetRow(-1, np)              self.GetView().SelectRow(row)
346                self.GetView().MakeCellVisible(row, 0)
347    
348            self.__Modified()
         self.__Modified(-1)  
   
         self.__NotifyRowChanges(old_len, len(self.tdata))  
349    
               
350          self.GetView().EndBatch()          self.GetView().EndBatch()
351            self.GetView().FitInside()
352    
353      def __NotifyRowChanges(self, curRows, newRows):      def __NotifyRowChanges(self, curRows, newRows):
354            """Make sure table updates correctly if the number of
355            rows changes.
356            """
357          #          #
358          # silly message processing for updates to the number of          # silly message processing for updates to the number of
359          # rows and columns          # rows and columns
# Line 300  class ClassTable(wxPyGridTableBase): Line 367  class ClassTable(wxPyGridTableBase):
367          elif newRows < curRows:          elif newRows < curRows:
368              msg = wxGridTableMessage(self,              msg = wxGridTableMessage(self,
369                          wxGRIDTABLE_NOTIFY_ROWS_DELETED,                          wxGRIDTABLE_NOTIFY_ROWS_DELETED,
370                          curRows - newRows,    # position                          curRows,              # position
371                          curRows - newRows)    # how many                          curRows - newRows)    # how many
372              self.GetView().ProcessTableMessage(msg)              self.GetView().ProcessTableMessage(msg)
373              self.GetView().FitInside()              self.GetView().FitInside()
# Line 310  class ClassTable(wxPyGridTableBase): Line 377  class ClassTable(wxPyGridTableBase):
377    
378          The table is considered modified after this operation.          The table is considered modified after this operation.
379    
380          row -- if row is -1 or greater than the current number of rows          row -- if row is < 0 'group' is inserted at the top of the table
381                 then group is appended to the end.                 if row is >= GetNumberRows() or None 'group' is append to
382                        the end of the table.
383                   otherwise 'group' replaces row 'row'
384          """          """
385    
386          # either append or replace          # either append or replace
387          if row == -1 or row >= self.GetNumberRows():          if row is None or row >= self.GetNumberRows():
388              self.tdata.append(group)              self.clazz.AppendGroup(group)
389            elif row < 0:
390                self.clazz.InsertGroup(0, group)
391          else:          else:
392              self.tdata[row] = group              if row == 0:
393                    self.clazz.SetDefaultGroup(group)
394                else:
395                    self.clazz.ReplaceGroup(row - 1, group)
396    
397          self.__Modified()          self.__Modified()
398    
# Line 329  class ClassTable(wxPyGridTableBase): Line 403  class ClassTable(wxPyGridTableBase):
403      def GetRowLabelValue(self, row):      def GetRowLabelValue(self, row):
404          """Return the label for the given row."""          """Return the label for the given row."""
405    
406          group = self.tdata[row]          if row == 0:
407          if isinstance(group, ClassGroupDefault):   return _("Default")              return _("Default")
408          if isinstance(group, ClassGroupSingleton): return _("Singleton")          else:
409          if isinstance(group, ClassGroupRange):     return _("Range")              group = self.clazz.GetGroup(row - 1)
410          if isinstance(group, ClassGroupMap):       return _("Map")              if isinstance(group, ClassGroupDefault):   return _("Default")
411                if isinstance(group, ClassGroupSingleton): return _("Singleton")
412                if isinstance(group, ClassGroupRange):     return _("Range")
413                if isinstance(group, ClassGroupMap):       return _("Map")
414    
415          assert(False) # shouldn't get here          assert False # shouldn't get here
416          return _("")          return ""
417    
418      def GetNumberRows(self):      def GetNumberRows(self):
419          """Return the number of rows."""          """Return the number of rows."""
420          return len(self.tdata)          if self.clazz is None:
421                return 0
422    
423            return self.clazz.GetNumGroups() + 1 # +1 for default group
424    
425      def GetNumberCols(self):      def GetNumberCols(self):
426          """Return the number of columns."""          """Return the number of columns."""
427          return self.NUM_COLS          return NUM_COLS
428    
429      def IsEmptyCell(self, row, col):      def IsEmptyCell(self, row, col):
430          """Determine if a cell is empty. This is always false."""          """Determine if a cell is empty. This is always false."""
# Line 362  class ClassTable(wxPyGridTableBase): Line 442  class ClassTable(wxPyGridTableBase):
442          """          """
443    
444          self.SetValueAsCustom(row, col, None, value)          self.SetValueAsCustom(row, col, None, value)
445          self.__Modified()  
         
446      def GetValueAsCustom(self, row, col, typeName):      def GetValueAsCustom(self, row, col, typeName):
447          """Return the object that is used to represent the given          """Return the object that is used to represent the given
448             cell coordinates. This may not be a string.             cell coordinates. This may not be a string.
449    
450          typeName -- unused, but needed to overload wxPyGridTableBase          typeName -- unused, but needed to overload wxPyGridTableBase
451          """          """
452    
453          group = self.tdata[row]          if row == 0:
454                group = self.clazz.GetDefaultGroup()
455            else:
456                group = self.clazz.GetGroup(row - 1)
457    
458    
459            if col == COL_VISIBLE:
460                return group.IsVisible()
461    
462          if col == COL_SYMBOL:          if col == COL_SYMBOL:
463              return group.GetProperties()              return group.GetProperties()
# Line 380  class ClassTable(wxPyGridTableBase): Line 466  class ClassTable(wxPyGridTableBase):
466              return group.GetLabel()              return group.GetLabel()
467    
468          # col must be COL_VALUE          # col must be COL_VALUE
469          assert(col == COL_VALUE)          assert col == COL_VALUE
470    
471          if isinstance(group, ClassGroupDefault):          if isinstance(group, ClassGroupDefault):
472              return _("DEFAULT")              return _("DEFAULT")
473          elif isinstance(group, ClassGroupSingleton):          elif isinstance(group, ClassGroupSingleton):
474              return group.GetValue()              return group.GetValue()
475          elif isinstance(group, ClassGroupRange):          elif isinstance(group, ClassGroupRange):
476              return _("%s - %s") % (group.GetMin(), group.GetMax())              return group.GetRange()
477    
478          assert(False) # shouldn't get here          assert False # shouldn't get here
479          return None          return None
480    
481      def __ParseInput(self, value):      def __ParseInput(self, value):
482          """Try to determine what kind of input value is          """Try to determine what kind of input value is
483             (string, number, or range)             (string, number, or range)
484    
485          Returns a tuple of length one if there is a single          Returns a tuple (type, data) where type is 0 if data is
486          value, or of length two if it is a range.          a singleton value, or 1 if is a range
487          """          """
488    
489          type = self.fieldType          type = self.fieldType
490    
491          if type == FIELDTYPE_STRING:          if type == FIELDTYPE_STRING:
492              return (value,)              return (0, value)
493          elif type == FIELDTYPE_INT or type == FIELDTYPE_DOUBLE:          elif type in (FIELDTYPE_INT, FIELDTYPE_DOUBLE):
   
494              if type == FIELDTYPE_INT:              if type == FIELDTYPE_INT:
495                    # the float call allows the user to enter 1.0 for 1
496                  conv = lambda p: int(float(p))                  conv = lambda p: int(float(p))
497              else:              else:
498                  conv = lambda p: p                  conv = float
499    
500              #              #
501              # first try to take the input as a single number              # first try to take the input as a single number
502              # if there's an exception try to break it into              # if there's an exception try to break it into
503              # a range seperated by a '-'. take care to ignore              # a range. if there is an exception here, let it
504              # a leading '-' as that could be for a negative number.              # pass up to the calling function.
             # then try to parse the individual parts. if there  
             # is an exception here, let it pass up to the calling  
             # function.  
505              #              #
506              try:              try:
507                  return (conv(Str2Num(value)),)                  return (0, conv(value))
508              except ValueError:              except ValueError:
509                  i = value.find('-')                  return (1, Range(value))
510                  if i == 0:  
511                      i = value.find('-', 1)          assert False  # shouldn't get here
512            return (0,None)
                 return (conv(Str2Num(value[:i])), conv(Str2Num(value[i+1:])))  
   
         assert(False) # shouldn't get here  
         return (0,)  
               
513    
514      def SetValueAsCustom(self, row, col, typeName, value):      def SetValueAsCustom(self, row, col, typeName, value):
515          """Set the cell specified by 'row' and 'col' to 'value'.          """Set the cell specified by 'row' and 'col' to 'value'.
# Line 445  class ClassTable(wxPyGridTableBase): Line 523  class ClassTable(wxPyGridTableBase):
523          typeName -- unused, but needed to overload wxPyGridTableBase          typeName -- unused, but needed to overload wxPyGridTableBase
524          """          """
525    
526          assert(col >= 0 and col < self.GetNumberCols())          assert 0 <= col < self.GetNumberCols()
527          assert(row >= 0 and row < self.GetNumberRows())          assert 0 <= row < self.GetNumberRows()
528    
529          group = self.tdata[row]          if row == 0:
530                group = self.clazz.GetDefaultGroup()
531            else:
532                group = self.clazz.GetGroup(row - 1)
533    
534          mod = True # assume the data will change          mod = True # assume the data will change
535    
536          if col == COL_SYMBOL:          if col == COL_VISIBLE:
537                group.SetVisible(value)
538            elif col == COL_SYMBOL:
539              group.SetProperties(value)              group.SetProperties(value)
540          elif col == COL_LABEL:          elif col == COL_LABEL:
541              group.SetLabel(value)              group.SetLabel(value)
# Line 480  class ClassTable(wxPyGridTableBase): Line 563  class ClassTable(wxPyGridTableBase):
563                      # changing the underlying group type if the                      # changing the underlying group type if the
564                      # group was a singleton and a range was entered                      # group was a singleton and a range was entered
565                      #                      #
566                      if len(dataInfo) == 1:                      if dataInfo[0] == 0:
567                          if not isinstance(group, ClassGroupSingleton):                          if not isinstance(group, ClassGroupSingleton):
568                              ngroup = ClassGroupSingleton(prop = props)                              ngroup = ClassGroupSingleton(props = props)
569                              changed = True                              changed = True
570                          ngroup.SetValue(dataInfo[0])                          ngroup.SetValue(dataInfo[1])
571                      elif len(dataInfo) == 2:                      elif dataInfo[0] == 1:
572                          if not isinstance(group, ClassGroupRange):                          if not isinstance(group, ClassGroupRange):
573                              ngroup = ClassGroupRange(prop = props)                              ngroup = ClassGroupRange(props = props)
574                              changed = True                              changed = True
575                          ngroup.SetRange(dataInfo[0], dataInfo[1])                          ngroup.SetRange(dataInfo[1])
576                      else:                      else:
577                          assert(False)                          assert False
578                          pass                          pass
579    
580                      if changed:                      if changed:
581                          ngroup.SetLabel(group.GetLabel())                          ngroup.SetLabel(group.GetLabel())
582                          self.SetClassGroup(row, ngroup)                          self.SetClassGroup(row, ngroup)
583          else:          else:
584              assert(False) # shouldn't be here              assert False # shouldn't be here
585              pass              pass
586    
587          if mod:          if mod:
# Line 508  class ClassTable(wxPyGridTableBase): Line 591  class ClassTable(wxPyGridTableBase):
591      def GetAttr(self, row, col, someExtraParameter):      def GetAttr(self, row, col, someExtraParameter):
592          """Returns the cell attributes"""          """Returns the cell attributes"""
593    
594          attr = wxGridCellAttr()          return self.__colAttr.get(col, wxGridCellAttr()).Clone()
         #attr = wxPyGridTableBase.GetAttr(self, row, col, someExtraParameter)  
   
         if col == COL_SYMBOL:  
             # we need to create a new renderer each time, because  
             # SetRenderer takes control of the parameter  
             attr.SetRenderer(ClassRenderer(self.shapeType))  
             attr.SetReadOnly()  
   
         return attr  
595    
596      def GetClassGroup(self, row):      def GetClassGroup(self, row):
597          """Return the ClassGroup object representing row 'row'."""          """Return the ClassGroup object representing row 'row'."""
598    
599          return self.tdata[row] # self.GetValueAsCustom(row, COL_SYMBOL, None)          #return self.GetValueAsCustom(row, COL_SYMBOL, None)
600            if row == 0:
601                return self.clazz.GetDefaultGroup()
602            else:
603                return self.clazz.GetGroup(row - 1)
604    
605      def SetClassGroup(self, row, group):      def SetClassGroup(self, row, group):
606            """Set the given row to properties of group."""
607          self.__SetRow(row, group)          self.__SetRow(row, group)
608          self.GetView().Refresh()          self.GetView().Refresh()
609    
# Line 553  class ClassTable(wxPyGridTableBase): Line 632  class ClassTable(wxPyGridTableBase):
632          The table is considered modified if any rows are removed.          The table is considered modified if any rows are removed.
633          """          """
634    
635          assert(pos >= 0)          assert pos >= 0
636          old_len = len(self.tdata)          old_len = self.GetNumberRows()
637          for row in range(pos, pos - numRows, -1):          for row in range(pos, pos - numRows, -1):
638              group = self.GetClassGroup(row)              group = self.GetClassGroup(row)
639              if not isinstance(group, ClassGroupDefault):              if row != 0:
640                  self.tdata.pop(row)                  self.clazz.RemoveGroup(row - 1)
641                  self.__Modified()                  self.__Modified()
642            
643          if self.IsModified():          if self.IsModified():
644              self.__NotifyRowChanges(old_len, len(self.tdata))              self.__NotifyRowChanges(old_len, self.GetNumberRows())
645    
646      def AppendRows(self, numRows = 1):      def AppendRows(self, numRows = 1):
647          """Append 'numRows' empty rows to the end of the table.          """Append 'numRows' empty rows to the end of the table.
# Line 570  class ClassTable(wxPyGridTableBase): Line 649  class ClassTable(wxPyGridTableBase):
649          The table is considered modified if any rows are appended.          The table is considered modified if any rows are appended.
650          """          """
651    
652          old_len = len(self.tdata)          old_len = self.GetNumberRows()
653          for i in range(numRows):          for i in range(numRows):
654              np = ClassGroupSingleton()              np = ClassGroupSingleton()
655              self.__SetRow(-1, np)              self.__SetRow(None, np)
656    
657          if self.IsModified():          if self.IsModified():
658              self.__NotifyRowChanges(old_len, len(self.tdata))              self.__NotifyRowChanges(old_len, self.GetNumberRows())
   
   
 class Classifier(NonModalDialog):  
       
     def __init__(self, parent, interactor, name, layer):  
         NonModalDialog.__init__(self, parent, interactor, name,  
                                 _("Classifier: %s") % layer.Title())  
   
         panel = wxPanel(self, -1, size=(100, 100))  
   
         self.layer = layer  
   
         self.originalClass = self.layer.GetClassification()  
         field = self.originalClass.GetField()  
         fieldType = self.originalClass.GetFieldType()  
   
         topBox = wxBoxSizer(wxVERTICAL)  
         panelBox = wxBoxSizer(wxVERTICAL)  
   
         #panelBox.Add(wxStaticText(panel, -1, _("Layer: %s") % layer.Title()),  
             #0, wxALIGN_LEFT | wxALL, 4)  
         panelBox.Add(wxStaticText(panel, -1,  
                                 _("Layer Type: %s") % layer.ShapeType()),  
             0, wxALIGN_LEFT | wxALL, 4)  
   
   
         #  
         # make field combo box  
         #  
         self.fields = wxComboBox(panel, ID_PROPERTY_SELECT, "",  
                                      style = wxCB_READONLY)  
   
         self.num_cols = layer.table.field_count()  
         # just assume the first field in case one hasn't been  
         # specified in the file.  
         self.__cur_field = 0  
   
         self.fields.Append("<None>")  
         self.fields.SetClientData(0, None)  
   
         for i in range(self.num_cols):  
             type, name, len, decc = layer.table.field_info(i)  
             self.fields.Append(name)  
   
             if name == field:  
                 self.__cur_field = i + 1  
                 self.fields.SetClientData(i + 1, self.originalClass)  
             else:  
                 self.fields.SetClientData(i + 1, None)  
659    
660    
661          ###########  ID_PROPERTY_REVERT = 4002
662    ID_PROPERTY_ADD = 4003
663    ID_PROPERTY_GENCLASS = 4004
664    ID_PROPERTY_REMOVE = 4005
665    ID_PROPERTY_MOVEUP = 4006
666    ID_PROPERTY_MOVEDOWN = 4007
667    ID_PROPERTY_TRY = 4008
668    ID_PROPERTY_EDITSYM = 4009
669    ID_PROPERTY_SELECT = 4011
670    ID_PROPERTY_TITLE = 4012
671    ID_PROPERTY_FIELDTEXT = 4013
672    
673    BTN_ADD = 0
674    BTN_EDIT = 1
675    BTN_GEN = 2
676    BTN_UP = 3
677    BTN_DOWN = 4
678    BTN_RM = 5
679    
680    EB_LAYER_TITLE = 0
681    EB_SELECT_FIELD = 1
682    EB_GEN_CLASS = 2
683    
684          self.fieldTypeText = wxStaticText(panel, -1, "")  class Classifier(LayerProperties):
         panelBox.Add(self.fieldTypeText, 0, wxGROW | wxALIGN_LEFT | wxALL, 4)  
685    
686          propertyBox = wxBoxSizer(wxHORIZONTAL)      type2string = {None:             _("None"),
687          propertyBox.Add(wxStaticText(panel, -1, _("Field: ")),                     FIELDTYPE_STRING: _("Text"),
688              0, wxALIGN_LEFT | wxALL, 4)                     FIELDTYPE_INT:    _("Integer"),
689          propertyBox.Add(self.fields, 1, wxGROW|wxALL, 4)                     FIELDTYPE_DOUBLE: _("Decimal")}
         EVT_COMBOBOX(self, ID_PROPERTY_SELECT, self._OnFieldSelect)  
690    
691          panelBox.Add(propertyBox, 0, wxGROW, 4)      def __init__(self, parent, name, layer, group = None):
692            """Create a Properties/Classification dialog for a layer.
693            The layer is part of map. If group is not None, select that
694            group in the classification table.
695            """
696    
697          ###########          LayerProperties.__init__(self, parent, name, layer)
         #  
         # Classification data table  
         #  
698    
699          controlBox = wxBoxSizer(wxHORIZONTAL)          self.layer.Subscribe(LAYER_SHAPESTORE_REPLACED,
700                                 self.layer_shapestore_replaced)
701    
702          self.classGrid = ClassGrid(panel)          self.genDlg = None
703          self.__SetGridTable(self.__cur_field)          self.group = group
704    
705          controlBox.Add(self.classGrid, 1, wxGROW, 0)          LayerProperties.dialog_layout(self)
706    
707          ###########      def dialog_layout(self, panel, panelBox):
         #  
         # Control buttons:  
         #  
         self.controlButtons = []  
708    
709          controlButtonBox = wxBoxSizer(wxVERTICAL)          if self.layer.HasClassification():
710    
711          button = wxButton(panel, ID_CLASSIFY_ADD, _("Add"))              self.fieldTypeText = wxStaticText(panel, -1, "")
         controlButtonBox.Add(button, 0, wxGROW | wxALL, 4)  
         self.controlButtons.append(button)  
712    
713          #button = wxButton(panel, ID_CLASSIFY_GENRANGE, _("Generate Ranges"))              self.originalClass = self.layer.GetClassification()
714          #controlButtonBox.Add(button, 0, wxGROW | wxALL, 4)              self.originalClassField = self.layer.GetClassificationColumn()
715          #self.controlButtons.append(button)              field = self.originalClassField
716                fieldType = self.layer.GetFieldType(field)
717    
718          button = wxButton(panel, ID_CLASSIFY_MOVEUP, _("Move Up"))              table = self.layer.ShapeStore().Table()
719          controlButtonBox.Add(button, 0, wxGROW | wxALL, 4)              #
720          self.controlButtons.append(button)              # make field choice box
721                #
722                self.fields = wxChoice(panel, ID_PROPERTY_SELECT,)
723    
724          button = wxButton(panel, ID_CLASSIFY_MOVEDOWN, _("Move Down"))              self.num_cols = table.NumColumns()
725          controlButtonBox.Add(button, 0, wxGROW | wxALL, 4)              # just assume the first field in case one hasn't been
726          self.controlButtons.append(button)              # specified in the file.
727                self.__cur_field = 0
728    
729          controlButtonBox.Add(60, 20, 0, wxGROW | wxALL | wxALIGN_BOTTOM, 4)              self.fields.Append("<None>")
730    
731          button = wxButton(panel, ID_CLASSIFY_REMOVE, _("Remove"))              if fieldType is None:
732          controlButtonBox.Add(button, 0, wxGROW | wxALL | wxALIGN_BOTTOM, 4)                  self.fields.SetClientData(0, copy.deepcopy(self.originalClass))
733          self.controlButtons.append(button)              else:
734                    self.fields.SetClientData(0, None)
735    
736          controlBox.Add(controlButtonBox, 0, wxGROW, 10)              for i in range(self.num_cols):
737          panelBox.Add(controlBox, 1, wxGROW, 10)                  name = table.Column(i).name
738                    self.fields.Append(name)
739    
740                    if name == field:
741                        self.__cur_field = i + 1
742                        self.fields.SetClientData(i + 1,
743                                                  copy.deepcopy(self.originalClass))
744                    else:
745                        self.fields.SetClientData(i + 1, None)
746    
747          EVT_BUTTON(self, ID_CLASSIFY_ADD, self._OnAdd)              button_gen = wxButton(panel, ID_PROPERTY_GENCLASS,
748          EVT_BUTTON(self, ID_CLASSIFY_REMOVE, self._OnRemove)                  _("Generate Class"))
749          EVT_BUTTON(self, ID_CLASSIFY_GENRANGE, self._OnGenRange)              button_add = wxButton(panel, ID_PROPERTY_ADD,
750          EVT_BUTTON(self, ID_CLASSIFY_MOVEUP, self._OnMoveUp)                  _("Add"))
751          EVT_BUTTON(self, ID_CLASSIFY_MOVEDOWN, self._OnMoveDown)              button_moveup = wxButton(panel, ID_PROPERTY_MOVEUP,
752                    _("Move Up"))
753                button_movedown = wxButton(panel, ID_PROPERTY_MOVEDOWN,
754                    _("Move Down"))
755                button_edit = wxButton(panel, ID_PROPERTY_EDITSYM,
756                    _("Edit Symbol"))
757                button_remove = wxButton(panel, ID_PROPERTY_REMOVE,
758                    _("Remove"))
759    
760                self.classGrid = ClassGrid(panel, self)
761    
762                # calling __SelectField after creating the classGrid fills in the
763                # grid with the correct information
764                self.fields.SetSelection(self.__cur_field)
765                self.__SelectField(self.__cur_field, group = self.group)
766    
767    
768                classBox = wxStaticBoxSizer(
769                            wxStaticBox(panel, -1, _("Classification")), wxVERTICAL)
770    
771    
772                sizer = wxBoxSizer(wxHORIZONTAL)
773                sizer.Add(wxStaticText(panel, ID_PROPERTY_FIELDTEXT, _("Field: ")),
774                    0, wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL | wxALL, 4)
775                sizer.Add(self.fields, 1, wxGROW | wxALL, 4)
776    
777                classBox.Add(sizer, 0, wxGROW, 4)
778    
779                classBox.Add(self.fieldTypeText, 0,
780                            wxGROW | wxALIGN_LEFT | wxALL | wxADJUST_MINSIZE, 4)
781    
782                controlBox = wxBoxSizer(wxHORIZONTAL)
783                controlButtonBox = wxBoxSizer(wxVERTICAL)
784    
785                controlButtonBox.Add(button_gen, 0, wxGROW|wxALL, 4)
786                controlButtonBox.Add(button_add, 0, wxGROW|wxALL, 4)
787                controlButtonBox.Add(button_moveup, 0, wxGROW|wxALL, 4)
788                controlButtonBox.Add(button_movedown, 0, wxGROW|wxALL, 4)
789                controlButtonBox.Add(button_edit, 0, wxGROW|wxALL, 4)
790                controlButtonBox.Add( (60, 20), 0, wxGROW|wxALL|wxALIGN_BOTTOM, 4)
791                controlButtonBox.Add(button_remove, 0,
792                                     wxGROW|wxALL|wxALIGN_BOTTOM, 4)
793    
794                controlBox.Add(self.classGrid, 1, wxGROW, 0)
795                controlBox.Add(controlButtonBox, 0, wxGROW, 10)
796    
797                classBox.Add(controlBox, 1, wxGROW, 10)
798                panelBox.Add(classBox, 1, wxGROW, 0)
799    
800    
801            EVT_CHOICE(self, ID_PROPERTY_SELECT, self._OnFieldSelect)
802            EVT_BUTTON(self, ID_PROPERTY_ADD, self._OnAdd)
803            EVT_BUTTON(self, ID_PROPERTY_EDITSYM, self._OnEditSymbol)
804            EVT_BUTTON(self, ID_PROPERTY_REMOVE, self._OnRemove)
805            EVT_BUTTON(self, ID_PROPERTY_GENCLASS, self._OnGenClass)
806            EVT_BUTTON(self, ID_PROPERTY_MOVEUP, self._OnMoveUp)
807            EVT_BUTTON(self, ID_PROPERTY_MOVEDOWN, self._OnMoveDown)
808    
809        def unsubscribe_messages(self):
810            """Unsubscribe from all messages."""
811            LayerProperties.unsubscribe_messages(self)
812            self.layer.Unsubscribe(LAYER_SHAPESTORE_REPLACED,
813                                   self.layer_shapestore_replaced)
814    
815        def layer_shapestore_replaced(self, *args):
816            """Subscribed to the map's LAYER_SHAPESTORE_REPLACED message.
817            Close self.
818            """
819            self.Close()
820    
821          ###########      def EditSymbol(self, row):
822            """Open up a dialog where the user can select the properties
823            for a group.
824            """
825            table = self.classGrid.GetTable()
826            prop = table.GetValueAsCustom(row, COL_SYMBOL, None)
827    
828          buttonBox = wxBoxSizer(wxHORIZONTAL)          # get a new ClassGroupProperties object and copy the
829          buttonBox.Add(wxButton(panel, ID_CLASSIFY_OK, _("OK")),          # values over to our current object
830                        0, wxALL, 4)          propDlg = SelectPropertiesDialog(self, prop, self.layer.ShapeType())
831          buttonBox.Add(60, 20, 0, wxALL, 4)  
832          buttonBox.Add(wxButton(panel, ID_CLASSIFY_APPLY, _("Apply")),          self.Enable(False)
833                        0, wxALL, 4)          if propDlg.ShowModal() == wxID_OK:
834          buttonBox.Add(60, 20, 0, wxALL, 4)              new_prop = propDlg.GetClassGroupProperties()
835          buttonBox.Add(wxButton(panel, ID_CLASSIFY_CANCEL, _("Cancel")),              table.SetValueAsCustom(row, COL_SYMBOL, None, new_prop)
836                        0, wxALL, 4)          self.Enable(True)
837          panelBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_BOTTOM, 0)          propDlg.Destroy()
838    
839          EVT_BUTTON(self, ID_CLASSIFY_OK, self._OnOK)      def _SetClassification(self, clazz):
840          EVT_BUTTON(self, ID_CLASSIFY_APPLY, self._OnApply)          """Called from the ClassGen dialog when a new classification has
841          EVT_BUTTON(self, ID_CLASSIFY_CANCEL, self._OnCancel)          been created and should be set in the table.
842            """
843          ###########          # FIXME: This could be implemented using a message
   
         self.fields.SetSelection(self.__cur_field)  
         self.__SelectField(self.__cur_field)  
   
         panel.SetAutoLayout(True)  
         panel.SetSizer(panelBox)  
         panelBox.SetSizeHints(panel)  
844    
845          topBox.Add(panel, 1, wxGROW, 0)          self.fields.SetClientData(self.__cur_field, clazz)
846          panelBox.SetSizeHints(self)          self.classGrid.GetTable().SetClassification(clazz)
         self.SetAutoLayout(True)  
         self.SetSizer(topBox)  
847    
848      def __BuildClassification(self, fieldIndex):      def __BuildClassification(self, fieldIndex, copyClass=False, force=False):
849            """Pack the classification setting into a Classification object.
850            Returns (Classification, fieldName) where fieldName is the selected
851            field in the table that the classification should be used with.
852            """
853    
854          numRows = self.classGrid.GetNumberRows()  #       numRows = self.classGrid.GetNumberRows()
855          assert(numRows > 0) # there should always be a default row  #       assert numRows > 0  # there should always be a default row
856    
         clazz = Classification()  
857          if fieldIndex == 0:          if fieldIndex == 0:
858              fieldName = None              fieldName = None
859              fieldType = None              fieldType = None
# Line 736  class Classifier(NonModalDialog): Line 861  class Classifier(NonModalDialog):
861              fieldName = self.fields.GetString(fieldIndex)              fieldName = self.fields.GetString(fieldIndex)
862              fieldType = self.layer.GetFieldType(fieldName)              fieldType = self.layer.GetFieldType(fieldName)
863    
864          clazz.SetField(fieldName)          clazz = self.fields.GetClientData(fieldIndex)
865          clazz.SetFieldType(fieldType)          if clazz is None or self.classGrid.GetTable().IsModified() or force:
866                clazz = self.classGrid.GetTable().GetClassification()
867                if copyClass:
868          table = self.classGrid.GetTable()                  clazz = copy.deepcopy(clazz)
869          clazz.SetDefaultGroup(table.GetClassGroup(0))  
870            return clazz, fieldName
871          for i in range(1, numRows):  
872              clazz.AddGroup(table.GetClassGroup(i))      def __SetGridTable(self, fieldIndex, group = None):
873            """Set the table with the classification associated with the
874          return clazz          selected field at fieldIndex. Select the specified group
875            if group is not None.
876      def __SetGridTable(self, fieldIndex):          """
877    
878          clazz = self.fields.GetClientData(fieldIndex)          clazz = self.fields.GetClientData(fieldIndex)
879    
# Line 759  class Classifier(NonModalDialog): Line 884  class Classifier(NonModalDialog):
884                      self.layer.GetClassification().                      self.layer.GetClassification().
885                                 GetDefaultGroup().GetProperties()))                                 GetDefaultGroup().GetProperties()))
886    
887              fieldName = self.fields.GetString(fieldIndex)          fieldName = self.fields.GetString(fieldIndex)
888              fieldType = self.layer.GetFieldType(fieldName)          fieldType = self.layer.GetFieldType(fieldName)
             clazz.SetFieldType(fieldType)  
889                                    
890          self.classGrid.CreateTable(clazz, self.layer.ShapeType())          self.classGrid.CreateTable(clazz, fieldType,
891                                       self.layer.ShapeType(), group)
   
   
     type2string = {None:             _("None"),  
                    FIELDTYPE_STRING: _("Text"),  
                    FIELDTYPE_INT:    _("Integer"),  
                    FIELDTYPE_DOUBLE: _("Decimal")}  
892    
893      def __SetFieldTypeText(self, fieldIndex):      def __SetFieldTypeText(self, fieldIndex):
894            """Set the field type string using the data type of the field
895            at fieldIndex.
896            """
897          fieldName = self.fields.GetString(fieldIndex)          fieldName = self.fields.GetString(fieldIndex)
898          fieldType = self.layer.GetFieldType(fieldName)          fieldType = self.layer.GetFieldType(fieldName)
899    
900          assert(Classifier.type2string.has_key(fieldType))          assert Classifier.type2string.has_key(fieldType)
901    
902          text = Classifier.type2string[fieldType]          text = Classifier.type2string[fieldType]
903    
904          self.fieldTypeText.SetLabel(_("Field Type: %s") % text)          self.fieldTypeText.SetLabel(_("Data Type: %s") % text)
905    
906      def __SelectField(self, newIndex, oldIndex = -1):      def __SelectField(self, newIndex, oldIndex = -1, group = None):
907            """This method assumes that the current selection for the
908            combo has already been set by a call to SetSelection().
909            """
910    
911          assert(oldIndex >= -1)          assert oldIndex >= -1
912    
913          if oldIndex != -1:          if oldIndex != -1:
914              clazz = self.__BuildClassification(oldIndex)              clazz, name = self.__BuildClassification(oldIndex, force = True)
915              self.fields.SetClientData(oldIndex, clazz)              self.fields.SetClientData(oldIndex, clazz)
916    
917          self.__SetGridTable(newIndex)          self.__SetGridTable(newIndex, group)
   
         enabled = newIndex != 0  
918    
919          for b in self.controlButtons:          self.__EnableButtons(EB_SELECT_FIELD)
             b.Enable(enabled)  
920    
921          self.__SetFieldTypeText(newIndex)          self.__SetFieldTypeText(newIndex)
922    
923        def __SetTitle(self, title):
924            """Set the title of the dialog."""
925            if title != "":
926                title = ": " + title
927    
928            self.SetTitle(_("Layer Properties") + title)
929    
930        def _OnEditSymbol(self, event):
931            """Open up a dialog for the user to select group properties."""
932            sel = self.classGrid.GetCurrentSelection()
933    
934            if len(sel) == 1:
935                self.EditSymbol(sel[0])
936    
937      def _OnFieldSelect(self, event):      def _OnFieldSelect(self, event):
938          index = self.fields.GetSelection()          index = self.fields.GetSelection()
939          self.__SelectField(index, self.__cur_field)          self.__SelectField(index, self.__cur_field)
940          self.__cur_field = index          self.__cur_field = index
941    
942      def _OnApply(self, event):      def OnTry(self, event):
943          """Put the data from the table into a new Classification and hand          """Put the data from the table into a new Classification and hand
944             it to the layer.             it to the layer.
945          """          """
946    
947          clazz = self.fields.GetClientData(self.__cur_field)          if self.layer.HasClassification():
948                clazz = self.fields.GetClientData(self.__cur_field)
949    
950          #              #
951          # only build the classification if there wasn't one to              # only build the classification if there wasn't one to
952          # to begin with or it has been modified              # to begin with or it has been modified
953          #              #
954          if clazz is None or self.classGrid.GetTable().IsModified():              self.classGrid.SaveEditControlValue()
955              clazz = self.__BuildClassification(self.__cur_field)              clazz, name = self.__BuildClassification(self.__cur_field, True)
956    
957                self.layer.SetClassificationColumn(name)
958                self.layer.SetClassification(clazz)
959    
960          self.layer.SetClassification(clazz)          self.haveApplied = True
961    
962      def _OnOK(self, event):      def OnOK(self, event):
963          self._OnApply(event)          self.OnTry(event)
964          self.OnClose(event)          self.Close()
965    
966      def _OnCancel(self, event):      def OnRevert(self, event):
967          """The layer's current classification stays the same."""          """The layer's current classification stays the same."""
968          self.layer.SetClassification(self.originalClass)          if self.haveApplied and self.layer.HasClassification():
969          self.OnClose(event)              self.layer.SetClassificationColumn(self.originalClassField)
970                self.layer.SetClassification(self.originalClass)
971    
972            #self.Close()
973    
974      def _OnAdd(self, event):      def _OnAdd(self, event):
975          self.classGrid.AppendRows()          self.classGrid.AppendRows()
# Line 836  class Classifier(NonModalDialog): Line 977  class Classifier(NonModalDialog):
977      def _OnRemove(self, event):      def _OnRemove(self, event):
978          self.classGrid.DeleteSelectedRows()          self.classGrid.DeleteSelectedRows()
979    
980      def _OnGenRange(self, event):      def _OnGenClass(self, event):
981          print "Classifier._OnGenRange()"          """Open up a dialog for the user to generate classifications."""
982    
983            self.genDlg = ClassGenDialog(self, self.layer,
984                              self.fields.GetString(self.__cur_field))
985    
986            EVT_CLOSE(self.genDlg, self._OnGenDialogClose)
987    
988            self.__EnableButtons(EB_GEN_CLASS)
989    
990            self.genDlg.Show()
991    
992        def _OnGenDialogClose(self, event):
993            """Reenable buttons after the generate classification
994            dialog is closed.
995            """
996            self.genDlg.Destroy()
997            self.genDlg = None
998            self.__EnableButtons(EB_GEN_CLASS)
999    
1000      def _OnMoveUp(self, event):      def _OnMoveUp(self, event):
1001            """When the user clicks MoveUp, try to move a group up one row."""
1002          sel = self.classGrid.GetCurrentSelection()          sel = self.classGrid.GetCurrentSelection()
1003    
1004          if len(sel) == 1:          if len(sel) == 1:
# Line 852  class Classifier(NonModalDialog): Line 1011  class Classifier(NonModalDialog):
1011                  table.SetClassGroup(i, x)                  table.SetClassGroup(i, x)
1012                  self.classGrid.ClearSelection()                  self.classGrid.ClearSelection()
1013                  self.classGrid.SelectRow(i - 1)                  self.classGrid.SelectRow(i - 1)
1014                    self.classGrid.MakeCellVisible(i - 1, 0)
1015    
1016      def _OnMoveDown(self, event):      def _OnMoveDown(self, event):
1017            """When the user clicks MoveDown, try to move a group down one row."""
1018          sel = self.classGrid.GetCurrentSelection()          sel = self.classGrid.GetCurrentSelection()
1019    
1020          if len(sel) == 1:          if len(sel) == 1:
# Line 866  class Classifier(NonModalDialog): Line 1027  class Classifier(NonModalDialog):
1027                  table.SetClassGroup(i + 1, x)                  table.SetClassGroup(i + 1, x)
1028                  self.classGrid.ClearSelection()                  self.classGrid.ClearSelection()
1029                  self.classGrid.SelectRow(i + 1)                  self.classGrid.SelectRow(i + 1)
1030                    self.classGrid.MakeCellVisible(i + 1, 0)
1031    
1032        def _OnTitleChanged(self, event):
1033            """Update the dialog title when the user changed the layer name."""
1034            obj = event.GetEventObject()
1035    
1036            self.layer.SetTitle(obj.GetValue())
1037            self.__SetTitle(self.layer.Title())
1038    
1039            self.__EnableButtons(EB_LAYER_TITLE)
1040    
1041  ID_SELPROP_OK = 4001      def __EnableButtons(self, case):
1042  ID_SELPROP_CANCEL = 4002          """Helper method that enables/disables the appropriate buttons
1043  ID_SELPROP_SPINCTRL = 4002          based on the case provided. Cases are constants beginning with EB_.
1044            """
1045    
1046            list = {wxID_OK                 : True,
1047                    wxID_CANCEL             : True,
1048                    ID_PROPERTY_ADD         : True,
1049                    ID_PROPERTY_MOVEUP      : True,
1050                    ID_PROPERTY_MOVEDOWN    : True,
1051                    ID_PROPERTY_REMOVE      : True,
1052                    ID_PROPERTY_SELECT      : True,
1053                    ID_PROPERTY_FIELDTEXT   : True,
1054                    ID_PROPERTY_GENCLASS    : True,
1055                    ID_PROPERTY_EDITSYM     : True}
1056    
1057            if case == EB_LAYER_TITLE:  
1058                if self.layer.Title() == "":
1059                    list[wxID_OK] = False
1060                    list[wxID_CANCEL] = False
1061    
1062            elif case == EB_SELECT_FIELD:
1063                if self.fields.GetSelection() == 0:
1064                    list[ID_PROPERTY_GENCLASS] = False
1065                    list[ID_PROPERTY_ADD] = False
1066                    list[ID_PROPERTY_MOVEUP] = False
1067                    list[ID_PROPERTY_MOVEDOWN] = False
1068                    list[ID_PROPERTY_REMOVE] = False
1069    
1070            elif case == EB_GEN_CLASS:
1071                if self.genDlg is not None:
1072                    list[ID_PROPERTY_SELECT] = False
1073                    list[ID_PROPERTY_FIELDTEXT] = False
1074                    list[ID_PROPERTY_GENCLASS] = False
1075    
1076            for id, enable in list.items():
1077                win = self.FindWindowById(id)
1078                if win:
1079                    win.Enable(enable)
1080    
1081    ID_SELPROP_SPINCTRL_LINEWIDTH = 4002
1082  ID_SELPROP_PREVIEW = 4003  ID_SELPROP_PREVIEW = 4003
1083  ID_SELPROP_STROKECLR = 4004  ID_SELPROP_STROKECLR = 4004
1084  ID_SELPROP_FILLCLR = 4005  ID_SELPROP_FILLCLR = 4005
1085  ID_SELPROP_STROKECLRTRANS = 4006  ID_SELPROP_STROKECLRTRANS = 4006
1086  ID_SELPROP_FILLCLRTRANS = 4007  ID_SELPROP_FILLCLRTRANS = 4007
1087    ID_SELPROP_SPINCTRL_SIZE = 4008
1088    
1089  class SelectPropertiesDialog(wxDialog):  class SelectPropertiesDialog(wxDialog):
1090        """Dialog that allows the user to select group properties."""
1091    
1092      def __init__(self, parent, prop, shapeType):      def __init__(self, parent, prop, shapeType):
1093            """Open the dialog with the initial prop properties and shapeType."""
1094    
1095          wxDialog.__init__(self, parent, -1, _("Select Properties"),          wxDialog.__init__(self, parent, -1, _("Select Properties"),
1096                            style = wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)                            style = wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER)
1097    
# Line 893  class SelectPropertiesDialog(wxDialog): Line 1105  class SelectPropertiesDialog(wxDialog):
1105          previewBox = wxBoxSizer(wxVERTICAL)          previewBox = wxBoxSizer(wxVERTICAL)
1106          previewBox.Add(wxStaticText(self, -1, _("Preview:")),          previewBox.Add(wxStaticText(self, -1, _("Preview:")),
1107              0, wxALIGN_LEFT | wxALL, 4)              0, wxALIGN_LEFT | wxALL, 4)
1108          self.previewer = ClassDataPreviewer(None, self.prop, shapeType,  
1109                                              self, ID_SELPROP_PREVIEW, (40, 40))          self.previewWin = ClassGroupPropertiesCtrl(
1110          previewBox.Add(self.previewer, 1, wxGROW, 15)              self, ID_SELPROP_PREVIEW, self.prop, shapeType,
1111                (40, 40), wxSIMPLE_BORDER)
1112    
1113            self.previewWin.AllowEdit(False)
1114    
1115            previewBox.Add(self.previewWin, 1, wxGROW | wxALL, 4)
1116    
1117          itemBox.Add(previewBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)          itemBox.Add(previewBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)
1118    
# Line 903  class SelectPropertiesDialog(wxDialog): Line 1120  class SelectPropertiesDialog(wxDialog):
1120          ctrlBox = wxBoxSizer(wxVERTICAL)          ctrlBox = wxBoxSizer(wxVERTICAL)
1121    
1122          lineColorBox = wxBoxSizer(wxHORIZONTAL)          lineColorBox = wxBoxSizer(wxHORIZONTAL)
1123          lineColorBox.Add(          button = wxButton(self, ID_SELPROP_STROKECLR, _("Change Line Color"))
1124              wxButton(self, ID_SELPROP_STROKECLR, _("Change Line Color")),          button.SetFocus()
1125              1, wxALL | wxGROW, 4)          lineColorBox.Add(button, 1, wxALL | wxGROW, 4)
1126          EVT_BUTTON(self, ID_SELPROP_STROKECLR, self._OnChangeLineColor)          EVT_BUTTON(self, ID_SELPROP_STROKECLR, self._OnChangeLineColor)
1127    
1128          lineColorBox.Add(          lineColorBox.Add(
# Line 931  class SelectPropertiesDialog(wxDialog): Line 1148  class SelectPropertiesDialog(wxDialog):
1148              ctrlBox.Add(fillColorBox, 0,              ctrlBox.Add(fillColorBox, 0,
1149                          wxALIGN_CENTER_HORIZONTAL | wxALL | wxGROW, 4)                          wxALIGN_CENTER_HORIZONTAL | wxALL | wxGROW, 4)
1150    
1151            # Line width selection
1152          spinBox = wxBoxSizer(wxHORIZONTAL)          spinBox = wxBoxSizer(wxHORIZONTAL)
1153          spinBox.Add(wxStaticText(self, -1, _("Line Width: ")),          spinBox.Add(wxStaticText(self, -1, _("Line Width: ")),
1154                  0, wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL | wxALL, 4)                  0, wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL | wxALL, 4)
1155          self.spinCtrl = wxSpinCtrl(self, ID_SELPROP_SPINCTRL,          self.spinCtrl_linewidth = wxSpinCtrl(self,
1156                                     min=1, max=10,                                               ID_SELPROP_SPINCTRL_LINEWIDTH,
1157                                     value=str(prop.GetLineWidth()),                                               min=1, max=10,
1158                                     initial=prop.GetLineWidth())                                               value=str(prop.GetLineWidth()),
1159                                                 initial=prop.GetLineWidth())
1160    
1161          EVT_SPINCTRL(self, ID_SELPROP_SPINCTRL, self._OnSpin)          EVT_SPINCTRL(self, ID_SELPROP_SPINCTRL_LINEWIDTH,
1162                         self._OnSpinLineWidth)
         spinBox.Add(self.spinCtrl, 0, wxALIGN_LEFT | wxALL, 4)  
1163    
1164            spinBox.Add(self.spinCtrl_linewidth, 0, wxALIGN_LEFT | wxALL, 4)
1165          ctrlBox.Add(spinBox, 0, wxALIGN_RIGHT | wxALL, 0)          ctrlBox.Add(spinBox, 0, wxALIGN_RIGHT | wxALL, 0)
1166    
1167            # Size selection
1168            if shapeType == SHAPETYPE_POINT:
1169                spinBox = wxBoxSizer(wxHORIZONTAL)
1170                spinBox.Add(wxStaticText(self, -1, _("Size: ")),
1171                            0, wxALIGN_LEFT | wxALIGN_CENTER_VERTICAL | wxALL, 4)
1172                self.spinCtrl_size = wxSpinCtrl(self, ID_SELPROP_SPINCTRL_SIZE,
1173                                                min=1, max=100,
1174                                                value=str(prop.GetSize()),
1175                                                initial=prop.GetSize())
1176    
1177                EVT_SPINCTRL(self, ID_SELPROP_SPINCTRL_SIZE, self._OnSpinSize)
1178    
1179                spinBox.Add(self.spinCtrl_size, 0, wxALIGN_LEFT | wxALL, 4)
1180                ctrlBox.Add(spinBox, 0, wxALIGN_RIGHT | wxALL, 0)
1181    
1182    
1183          itemBox.Add(ctrlBox, 0, wxALIGN_RIGHT | wxALL | wxGROW, 0)          itemBox.Add(ctrlBox, 0, wxALIGN_RIGHT | wxALL | wxGROW, 0)
1184          topBox.Add(itemBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)          topBox.Add(itemBox, 1, wxALIGN_LEFT | wxALL | wxGROW, 0)
1185    
# Line 951  class SelectPropertiesDialog(wxDialog): Line 1187  class SelectPropertiesDialog(wxDialog):
1187          # Control buttons:          # Control buttons:
1188          #          #
1189          buttonBox = wxBoxSizer(wxHORIZONTAL)          buttonBox = wxBoxSizer(wxHORIZONTAL)
1190          buttonBox.Add(wxButton(self, ID_SELPROP_OK, _("OK")),          button_ok = wxButton(self, wxID_OK, _("OK"))
1191                        0, wxALL, 4)          buttonBox.Add(button_ok, 0, wxRIGHT|wxEXPAND, 10)
1192          buttonBox.Add(wxButton(self, ID_SELPROP_CANCEL, _("Cancel")),          buttonBox.Add(wxButton(self, wxID_CANCEL, _("Cancel")),
1193                        0, wxALL, 4)                        0, wxRIGHT|wxEXPAND, 10)
1194          topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALIGN_BOTTOM, 10)          topBox.Add(buttonBox, 0, wxALIGN_RIGHT|wxBOTTOM|wxTOP, 10)
1195                                                                                    
1196          EVT_BUTTON(self, ID_SELPROP_OK, self._OnOK)          button_ok.SetDefault()
1197          EVT_BUTTON(self, ID_SELPROP_CANCEL, self._OnCancel)  
1198                                                                                            #EVT_BUTTON(self, wxID_OK, self._OnOK)
1199            #EVT_BUTTON(self, ID_SELPROP_CANCEL, self._OnCancel)
1200    
1201          self.SetAutoLayout(True)          self.SetAutoLayout(True)
1202          self.SetSizer(topBox)          self.SetSizer(topBox)
1203          topBox.Fit(self)          topBox.Fit(self)
1204          topBox.SetSizeHints(self)          topBox.SetSizeHints(self)
1205    
1206      def _OnOK(self, event):      def OnOK(self, event):
1207          self.EndModal(wxID_OK)          self.EndModal(wxID_OK)
1208    
1209      def _OnCancel(self, event):      def OnCancel(self, event):
1210          self.EndModal(wxID_CANCEL)          self.EndModal(wxID_CANCEL)
1211    
1212      def _OnSpin(self, event):      def _OnSpinLineWidth(self, event):
1213          self.prop.SetLineWidth(self.spinCtrl.GetValue())          self.prop.SetLineWidth(self.spinCtrl_linewidth.GetValue())
1214          self.previewer.Refresh()          self.previewWin.Refresh()
1215    
1216        def _OnSpinSize(self, event):
1217            self.prop.SetSize(self.spinCtrl_size.GetValue())
1218            self.previewWin.Refresh()
1219    
1220      def __GetColor(self, cur):      def __GetColor(self, cur):
1221          dialog = wxColourDialog(self)          dialog = ColorDialog(self)
1222          dialog.GetColourData().SetColour(Color2wxColour(cur))          dialog.SetColor(cur)
1223    
1224          ret = None          ret = None
1225          if dialog.ShowModal() == wxID_OK:          if dialog.ShowModal() == wxID_OK:
1226              ret = wxColour2Color(dialog.GetColourData().GetColour())              ret = dialog.GetColor()
1227    
1228          dialog.Destroy()          dialog.Destroy()
1229    
1230          return ret          return ret
1231            
1232      def _OnChangeLineColor(self, event):      def _OnChangeLineColor(self, event):
1233          clr = self.__GetColor(self.prop.GetLineColor())          clr = self.__GetColor(self.prop.GetLineColor())
1234          if clr is not None:          if clr is not None:
1235              self.prop.SetLineColor(clr)              self.prop.SetLineColor(clr)
1236          self.previewer.Refresh() # XXX: work around, see ClassDataPreviewer          self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1237    
1238      def _OnChangeLineColorTrans(self, event):      def _OnChangeLineColorTrans(self, event):
1239          self.prop.SetLineColor(Color.None)          self.prop.SetLineColor(Transparent)
1240          self.previewer.Refresh() # XXX: work around, see ClassDataPreviewer          self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1241            
1242      def _OnChangeFillColor(self, event):      def _OnChangeFillColor(self, event):
1243          clr = self.__GetColor(self.prop.GetFill())          clr = self.__GetColor(self.prop.GetFill())
1244          if clr is not None:          if clr is not None:
1245              self.prop.SetFill(clr)              self.prop.SetFill(clr)
1246          self.previewer.Refresh() # XXX: work around, see ClassDataPreviewer          self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1247    
1248      def _OnChangeFillColorTrans(self, event):      def _OnChangeFillColorTrans(self, event):
1249          self.prop.SetFill(Color.None)          self.prop.SetFill(Transparent)
1250          self.previewer.Refresh() # XXX: work around, see ClassDataPreviewer          self.previewWin.Refresh() # XXX: work around, see ClassDataPreviewer
1251    
1252      def GetClassGroupProperties(self):      def GetClassGroupProperties(self):
1253          return self.prop          return self.prop
1254    
1255    
1256  class ClassDataPreviewer(wxWindow):  class ClassDataPreviewWindow(wxWindow):
1257        """A custom window that draws group properties using the correct shape."""
1258    
1259      def __init__(self, rect, prop, shapeType,      def __init__(self, rect, prop, shapeType,
1260                         parent = None, id = -1, size = wxDefaultSize):                         parent = None, id = -1, size = wxDefaultSize):
1261            """Draws the appropriate shape as specified with shapeType using
1262            prop properities.
1263            """
1264          if parent is not None:          if parent is not None:
1265              wxWindow.__init__(self, parent, id, size=size)              wxWindow.__init__(self, parent, id, (0, 0), size)
1266              EVT_PAINT(self, self._OnPaint)              EVT_PAINT(self, self._OnPaint)
1267    
1268          self.rect = rect          self.rect = rect
1269    
1270          self.prop = prop          self.prop = prop
1271          self.shapeType = shapeType          self.shapeType = shapeType
1272            self.previewer = ClassDataPreviewer()
1273    
1274        def GetProperties():
1275            return self.prop
1276    
1277      def _OnPaint(self, event):      def _OnPaint(self, event):
1278          dc = wxPaintDC(self)          dc = wxPaintDC(self)
# Line 1028  class ClassDataPreviewer(wxWindow): Line 1280  class ClassDataPreviewer(wxWindow):
1280          # XXX: this doesn't seem to be having an effect:          # XXX: this doesn't seem to be having an effect:
1281          dc.DestroyClippingRegion()          dc.DestroyClippingRegion()
1282    
1283          self.Draw(dc, None)          if self.rect is None:
1284                w, h = self.GetSize()
1285                rect = wxRect(0, 0, w, h)
1286            else:
1287                rect = self.rect
1288    
1289            self.previewer.Draw(dc, rect, self.prop, self.shapeType)
1290    
1291    class ClassDataPreviewer:
1292        """Class that actually draws a group property preview."""
1293    
1294        def Draw(self, dc, rect, prop, shapeType):
1295            """Draw the property.
1296    
1297      def Draw(self, dc, rect, prop = None, shapeType = None):          returns: (w, h) as adapted extend if the drawing size
1298            exceeded the given rect. This can only be the case
1299            for point symbols. If the symbol fits the given rect,
1300            None is returned.
1301            """
1302    
1303          if prop is None: prop = self.prop          assert dc is not None
1304          if shapeType is None: shapeType = self.shapeType          assert isinstance(prop, ClassGroupProperties)
1305    
1306          if rect is None:          if rect is None:
1307              x = y = 0              x = 0
1308              w, h = self.GetClientSizeTuple()              y = 0
1309                w, h = dc.GetSize()
1310          else:          else:
1311              x = rect.GetX()              x = rect.GetX()
1312              y = rect.GetY()              y = rect.GetY()
# Line 1045  class ClassDataPreviewer(wxWindow): Line 1314  class ClassDataPreviewer(wxWindow):
1314              h = rect.GetHeight()              h = rect.GetHeight()
1315    
1316          stroke = prop.GetLineColor()          stroke = prop.GetLineColor()
1317          if stroke is Color.None:          if stroke is Transparent:
1318              pen = wxTRANSPARENT_PEN              pen = wxTRANSPARENT_PEN
1319          else:          else:
1320              pen = wxPen(Color2wxColour(stroke),              pen = wxPen(Color2wxColour(stroke),
# Line 1053  class ClassDataPreviewer(wxWindow): Line 1322  class ClassDataPreviewer(wxWindow):
1322                          wxSOLID)                          wxSOLID)
1323    
1324          stroke = prop.GetFill()          stroke = prop.GetFill()
1325          if stroke is Color.None:          if stroke is Transparent:
1326              brush = wxTRANSPARENT_BRUSH              brush = wxTRANSPARENT_BRUSH
1327          else:          else:
1328              brush = wxBrush(Color2wxColour(stroke), wxSOLID)              brush = wxBrush(Color2wxColour(stroke), wxSOLID)
# Line 1067  class ClassDataPreviewer(wxWindow): Line 1336  class ClassDataPreviewer(wxWindow):
1336                             wxPoint(x + w/2, y + h/4*3),                             wxPoint(x + w/2, y + h/4*3),
1337                             wxPoint(x + w, y)])                             wxPoint(x + w, y)])
1338    
1339          elif shapeType == SHAPETYPE_POINT or \          elif shapeType == SHAPETYPE_POINT:
1340               shapeType == SHAPETYPE_POLYGON:  
1341                dc.DrawCircle(x + w/2, y + h/2, prop.GetSize())
1342                circle_size =  prop.GetSize() * 2 + prop.GetLineWidth() * 2
1343                new_h = h
1344                new_w = w
1345                if h < circle_size: new_h = circle_size
1346                if w < circle_size: new_w = circle_size
1347                if new_h > h or new_w > w:
1348                    return (new_w, new_h)
1349    
1350            elif shapeType == SHAPETYPE_POLYGON:
1351                dc.DrawRectangle(x, y, w, h)
1352    
1353              dc.DrawCircle(x + w/2, y + h/2,          return None
                           (min(w, h) - prop.GetLineWidth())/2)  
1354    
1355  class ClassRenderer(wxPyGridCellRenderer):  class ClassRenderer(wxPyGridCellRenderer):
1356        """A wrapper class that can be used to draw group properties in a
1357        grid table.
1358        """
1359    
1360      def __init__(self, shapeType):      def __init__(self, shapeType):
1361          wxPyGridCellRenderer.__init__(self)          wxPyGridCellRenderer.__init__(self)
1362          self.previewer = ClassDataPreviewer(None, None, shapeType)          self.shapeType = shapeType
1363            self.previewer = ClassDataPreviewer()
1364    
1365      def Draw(self, grid, attr, dc, rect, row, col, isSelected):      def Draw(self, grid, attr, dc, rect, row, col, isSelected):
1366          data = grid.GetTable().GetClassGroup(row)          data = grid.GetTable().GetClassGroup(row)
# Line 1090  class ClassRenderer(wxPyGridCellRenderer Line 1373  class ClassRenderer(wxPyGridCellRenderer
1373                           rect.GetWidth(), rect.GetHeight())                           rect.GetWidth(), rect.GetHeight())
1374    
1375          if not isinstance(data, ClassGroupMap):          if not isinstance(data, ClassGroupMap):
1376              self.previewer.Draw(dc, rect, data.GetProperties())              new_size = self.previewer.Draw(dc, rect, data.GetProperties(),
1377                                               self.shapeType)
1378                if new_size is not None:
1379                    (new_w, new_h) = new_size
1380                    grid.SetRowSize(row, new_h)
1381                    grid.SetColSize(col, new_h)
1382                    grid.ForceRefresh()
1383    
1384                    # now that we know the height, redraw everything
1385                    rect.SetHeight(new_h)
1386                    rect.SetWidth(new_w)
1387                    dc.DestroyClippingRegion()
1388                    dc.SetClippingRegion(rect.GetX(), rect.GetY(),
1389                                         rect.GetWidth(), rect.GetHeight())
1390                    dc.SetPen(wxPen(wxLIGHT_GREY))
1391                    dc.SetBrush(wxBrush(wxLIGHT_GREY, wxSOLID))
1392                    dc.DrawRectangle(rect.GetX(), rect.GetY(),
1393                                     rect.GetWidth(), rect.GetHeight())
1394                    self.previewer.Draw(dc, rect, data.GetProperties(),
1395                                        self.shapeType)
1396    
1397          if isSelected:          if isSelected:
1398              dc.SetPen(wxPen(wxColour(0 * 255, 0 * 255, 0 * 255),              dc.SetPen(wxPen(wxBLACK, 1, wxSOLID))
                       4, wxSOLID))  
1399              dc.SetBrush(wxTRANSPARENT_BRUSH)              dc.SetBrush(wxTRANSPARENT_BRUSH)
1400    
1401              dc.DrawRectangle(rect.GetX(), rect.GetY(),              dc.DrawRectangle(rect.GetX(), rect.GetY(),
1402                               rect.GetWidth(), rect.GetHeight())                               rect.GetWidth(), rect.GetHeight())
1403    
1404          dc.DestroyClippingRegion()          dc.DestroyClippingRegion()
1405    
1406    
1407    class ClassGroupPropertiesCtrl(wxControl):
1408        """A custom window and control that draw a preview of group properties
1409        and can open a dialog to modify the properties if the user double-clicks
1410        it.
1411        """
1412    
1413        def __init__(self, parent, id, props, shapeType,
1414                     size = wxDefaultSize, style = 0):
1415            wxControl.__init__(self, parent, id, size = size, style = style)
1416    
1417            self.parent = parent
1418    
1419            self.SetProperties(props)
1420            self.SetShapeType(shapeType)
1421            self.AllowEdit(True)
1422    
1423            EVT_PAINT(self, self._OnPaint)
1424            EVT_LEFT_DCLICK(self, self._OnLeftDClick)
1425    
1426            self.previewer = ClassDataPreviewer()
1427    
1428        def _OnPaint(self, event):
1429            dc = wxPaintDC(self)
1430    
1431            # XXX: this doesn't seem to be having an effect:
1432            dc.DestroyClippingRegion()
1433    
1434            w, h = self.GetClientSize()
1435    
1436            self.previewer.Draw(dc,
1437                                wxRect(0, 0, w, h),
1438                                self.GetProperties(),
1439                                self.GetShapeType())
1440    
1441    
1442        def GetProperties(self):
1443            return self.props
1444    
1445        def SetProperties(self, props):
1446            self.props = props
1447            self.Refresh()
1448    
1449        def GetShapeType(self):
1450            return self.shapeType
1451    
1452        def SetShapeType(self, shapeType):
1453            self.shapeType = shapeType
1454            self.Refresh()
1455    
1456        def AllowEdit(self, allow):
1457            """Allow/Disallow double-clicking on the control."""
1458            self.allowEdit = allow
1459    
1460        def DoEdit(self):
1461            """Open the properties selector dialog."""
1462    
1463            if not self.allowEdit: return
1464    
1465            propDlg = SelectPropertiesDialog(self.parent,
1466                                             self.GetProperties(),
1467                                             self.GetShapeType())
1468    
1469            if propDlg.ShowModal() == wxID_OK:
1470                new_prop = propDlg.GetClassGroupProperties()
1471                self.SetProperties(new_prop)
1472                self.Refresh()
1473    
1474            propDlg.Destroy()
1475    
1476        def _OnLeftDClick(self, event):
1477            self.DoEdit()
1478    
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