/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/legend.py
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revision 578 by jonathan, Mon Mar 31 18:31:46 2003 UTC revision 1050 by frank, Tue May 27 09:31:13 2003 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jonathan Coles <[email protected]>  # Jonathan Coles <[email protected]>
4    # Frank Koormann <[email protected]>
5  #  #
6  # This program is free software under the GPL (>=v2)  # This program is free software under the GPL (>=v2)
7  # Read the file COPYING coming with Thuban for details.  # Read the file COPYING coming with Thuban for details.
# Line 9  __version__ = "$Revision$" Line 10  __version__ = "$Revision$"
10    
11  from Thuban import _  from Thuban import _
12    
13    import resource
14    
15  from wxPython.wx import *  from wxPython.wx import *
16    
17  from Thuban.Model.layer import Layer  from Thuban.Model.layer import BaseLayer
18  from Thuban.Model.map import Map  from Thuban.Model.map import Map
 from Thuban.Model.messages import *  
19  from Thuban.Model.classification import ClassGroup  from Thuban.Model.classification import ClassGroup
20    
21  from Thuban.UI.messages import *  from Thuban.Model.messages import \
22        MAP_STACKING_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED, LAYER_CHANGED,\
23        LAYER_VISIBILITY_CHANGED, TITLE_CHANGED
24    
25    from Thuban.UI.messages import SCALE_CHANGED
26    
27  from Thuban.UI.classifier import ClassDataPreviewer  from Thuban.UI.classifier import ClassDataPreviewer
28  from Thuban.UI.dock import DockPanel  from Thuban.UI.dock import DockPanel
29    from Thuban.UI.scalebar import ScaleBar
30    
31  from Thuban.Lib.connector import ConnectorError  from Thuban.Lib.connector import ConnectorError
32    
33  ID_LEGEND_MOVEUP = 4001  ID_LEGEND_TOP = 4001
34  ID_LEGEND_MOVEDOWN = 4002  ID_LEGEND_RAISE = 4002
35  ID_LEGEND_TREE = 4003  ID_LEGEND_LOWER = 4003
36  ID_LEGEND_CLASSIFY = 4004  ID_LEGEND_BOTTOM = 4004
37  ID_LEGEND_SHOWLAYER = 4005  ID_LEGEND_TREE = 4005
38  ID_LEGEND_HIDELAYER = 4006  ID_LEGEND_PROPS = 4006
39    ID_LEGEND_SHOWLAYER = 4007
40    ID_LEGEND_HIDELAYER = 4008
41    
42  BMP_SIZE_W = 30  BMP_SIZE_W = 15
43  BMP_SIZE_H = 15  BMP_SIZE_H = 15
44    
45    TOP_BMP = "top_layer"
46    RAISE_BMP = "raise_layer"
47    LOWER_BMP = "lower_layer"
48    BOTTOM_BMP = "bottom_layer"
49    SHOW_BMP  = "show_layer"
50    HIDE_BMP  = "hide_layer"
51    PROPS_BMP = "layer_properties"
52    
53    
54  class LegendPanel(DockPanel):  class LegendPanel(DockPanel):
55    
56      def __init__(self, parent, map, mainWindow):      def __init__(self, parent, map, mainWindow):
# Line 40  class LegendPanel(DockPanel): Line 59  class LegendPanel(DockPanel):
59          self.mainWindow = mainWindow          self.mainWindow = mainWindow
60          self.parent = parent          self.parent = parent
61    
         panelBox = wxBoxSizer(wxVERTICAL)  
   
         buttonBox = wxGridSizer(2, 3, 0, 0)  
   
62          self.buttons = []          self.buttons = []
63    
64          button = wxButton(self, ID_LEGEND_MOVEUP, _("Move Up"))          panelBox = wxBoxSizer(wxVERTICAL)
65          buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)  
66          self.buttons.append(button)          self.toolBar = wxToolBar(self, -1)
67            self.toolBar.SetToolBitmapSize(wxSize(24, 24))
         button = wxButton(self, ID_LEGEND_SHOWLAYER, _("Show Layer"))  
         buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)  
         self.buttons.append(button)  
   
         button = wxButton(self, ID_LEGEND_CLASSIFY, _("Classify"))  
         buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)  
         self.buttons.append(button)  
   
         button = wxButton(self, ID_LEGEND_MOVEDOWN, _("Move Down"))  
         buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)  
         self.buttons.append(button)  
   
         button = wxButton(self, ID_LEGEND_HIDELAYER, _("Hide Layer"))  
         buttonBox.Add(button, 0, wxGROW | wxLEFT | wxRIGHT, 0)  
         self.buttons.append(button)  
   
         EVT_BUTTON(self, ID_LEGEND_MOVEUP, self._OnMoveUp)  
         EVT_BUTTON(self, ID_LEGEND_MOVEDOWN, self._OnMoveDown)  
         EVT_BUTTON(self, ID_LEGEND_CLASSIFY, self._OnClassify)  
         EVT_BUTTON(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)  
         EVT_BUTTON(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)  
68    
69          panelBox.Add(buttonBox, 0, 0, 4)          bmp = resource.GetBitmapResource(TOP_BMP, wxBITMAP_TYPE_XPM)
70            self.toolBar.AddTool(ID_LEGEND_TOP, bmp,
71                shortHelpString=_("Top Layer"))
72    
73            bmp = resource.GetBitmapResource(RAISE_BMP, wxBITMAP_TYPE_XPM)
74            self.toolBar.AddTool(ID_LEGEND_RAISE, bmp,
75                shortHelpString=_("Raise Layer"))
76    
77            bmp = resource.GetBitmapResource(LOWER_BMP, wxBITMAP_TYPE_XPM)
78            self.toolBar.AddTool(ID_LEGEND_LOWER, bmp,
79                shortHelpString=_("Lower Layer"))
80    
81            bmp = resource.GetBitmapResource(BOTTOM_BMP, wxBITMAP_TYPE_XPM)
82            self.toolBar.AddTool(ID_LEGEND_BOTTOM, bmp,
83                shortHelpString=_("Bottom Layer"))
84    
85            bmp = resource.GetBitmapResource(SHOW_BMP, wxBITMAP_TYPE_XPM)
86            self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp,
87                shortHelpString=_("Show Layer"))
88    
89            bmp = resource.GetBitmapResource(HIDE_BMP, wxBITMAP_TYPE_XPM)
90            self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp,
91                shortHelpString=_("Hide Layer"))
92    
93            bmp = resource.GetBitmapResource(PROPS_BMP, wxBITMAP_TYPE_XPM)
94            self.toolBar.AddTool(ID_LEGEND_PROPS, bmp,
95                shortHelpString=_("Edit Layer Properties"))
96    
97            self.toolBar.Realize()
98            panelBox.Add(self.toolBar, 0, wxGROW, 0)
99    
100            EVT_TOOL(self, ID_LEGEND_TOP, self._OnMoveTop)
101            EVT_TOOL(self, ID_LEGEND_RAISE, self._OnMoveUp)
102            EVT_TOOL(self, ID_LEGEND_LOWER, self._OnMoveDown)
103            EVT_TOOL(self, ID_LEGEND_BOTTOM, self._OnMoveBottom)
104            EVT_TOOL(self, ID_LEGEND_PROPS, self._OnProperties)
105            EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
106            EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)
107    
108          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)
109    
110          panelBox.Add(self.tree, 1, wxGROW, 4)          panelBox.Add(self.tree, 1, wxGROW, 0)
111    
112          panelBox.Fit(self)          self.scalebarbitmap = ScaleBarBitmap(self, map, mainWindow)
113            panelBox.Add(self.scalebarbitmap, 0, wxGROW, 0)
114    
115          self.SetAutoLayout(True)          self.SetAutoLayout(True)
116          self.SetSizer(panelBox)          self.SetSizer(panelBox)
117          panelBox.SetSizeHints(self)          panelBox.SetSizeHints(self)
118    
         #panelBox.SetSizeHints(self.parent)  
119    
120          self.panelBox = panelBox          self.panelBox = panelBox
121    
122            self.__EnableButtons(False)
123    
124            self.Create()
125    
126          EVT_CLOSE(self, self._OnClose)          EVT_CLOSE(self, self._OnClose)
127    
128    
# Line 96  class LegendPanel(DockPanel): Line 131  class LegendPanel(DockPanel):
131    
132      def SetMap(self, map):      def SetMap(self, map):
133          self.tree.SetMap(map)          self.tree.SetMap(map)
134            self.scalebarbitmap.SetCanvas(self.mainWindow.canvas)
135    
136      def DoOnSelChanged(self, layer, group):      def DoOnSelChanged(self, layer, group):
137    
138          ok = isinstance(layer, Layer)          ok = isinstance(layer, BaseLayer)
139          self.__EnableButtons(ok)          self.__EnableButtons(ok)
140    
141          if ok:          self.mainWindow.SelectLayer(layer)
             self.mainWindow.SelectLayer(layer)  
142    
143      def DoOnClassify(self):      def DoOnProperties(self):
144          list = self.tree.GetSelectedHierarchy()          list = self.tree.GetSelectedHierarchy()
145    
146          ok = isinstance(list[0], Layer)          ok = isinstance(list[0], BaseLayer)
147          if ok:          if ok:
148              self.mainWindow.OpenClassifier(list[0], list[1])              self.mainWindow.OpenLayerProperties(list[0], list[1])
149    
150      def Destroy(self):      def Destroy(self):
151          self.__Close()          self.__Close()
152    
153      def _OnClassify(self, event):      def _OnProperties(self, event):
154          self.DoOnClassify()          self.DoOnProperties()
155    
156        def _OnMoveTop(self, event):
157            self.tree.MoveCurrentItemTop()
158            
159      def _OnMoveUp(self, event):      def _OnMoveUp(self, event):
160          self.tree.MoveCurrentItemUp()          self.tree.MoveCurrentItemUp()
161    
162      def _OnMoveDown(self, event):      def _OnMoveDown(self, event):
163          self.tree.MoveCurrentItemDown()          self.tree.MoveCurrentItemDown()
164    
165        def _OnMoveBottom(self, event):
166            self.tree.MoveCurrentItemBottom()
167    
168      def _OnShowLayer(self, event):      def _OnShowLayer(self, event):
169          self.tree.DoOnShowLayer()          self.tree.DoOnShowLayer()
170          pass          pass
# Line 139  class LegendPanel(DockPanel): Line 180  class LegendPanel(DockPanel):
180          pass          pass
181    
182      def __EnableButtons(self, on):      def __EnableButtons(self, on):
183          for b in self.buttons:          self.toolBar.EnableTool(ID_LEGEND_TOP, on)
184              b.Enable(on)          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
185            self.toolBar.EnableTool(ID_LEGEND_LOWER, on)
186            self.toolBar.EnableTool(ID_LEGEND_BOTTOM, on)
187            self.toolBar.EnableTool(ID_LEGEND_SHOWLAYER,  on)
188            self.toolBar.EnableTool(ID_LEGEND_HIDELAYER,  on)
189            self.toolBar.EnableTool(ID_LEGEND_PROPS, on)
190    
191      def __Close(self):      def __Close(self):
192          self.tree.Close()          self.tree.Close()
# Line 202  class LegendTree(wxTreeCtrl): Line 248  class LegendTree(wxTreeCtrl):
248                  #self._OnMsgMapsChanged)                  #self._OnMsgMapsChanged)
249              self.__FillTree(self.map)              self.__FillTree(self.map)
250    
251                    def MoveCurrentItemTop(self):
252      def MoveCurrentItemUp(self):          layer, group = self.GetSelectedHierarchy()
         cur_id = self.GetSelection()  
         assert(cur_id.IsOk())  
   
         cur_data = self.GetPyData(cur_id)  
253    
254          #prev_id = self.GetPrevSibling(cur_id)          if layer is not None:
255                self.map.TopLayer(layer)
256            else:
257                assert False, "Shouldn't be allowed."
258                pass
259    
260          #      def MoveCurrentItemUp(self):
261          # Get out if there's nowhere to go          layer, group = self.GetSelectedHierarchy()
         #  
         #if prev_id == INVALID_TREE_ID: return  
262    
263          if isinstance(cur_data, Layer):          if layer is not None:
264              self.map.RaiseLayer(cur_data)              self.map.RaiseLayer(layer)
         elif isinstance(cur_data, ClassGroup):  
             pass  
265          else:          else:
266              assert(False, "Shouldn't be here.")              assert False, "Shouldn't be allowed."
267              pass              pass
268    
269      def MoveCurrentItemDown(self):      def MoveCurrentItemDown(self):
270          cur_id = self.GetSelection()          layer, group = self.GetSelectedHierarchy()
         assert(cur_id.IsOk())  
   
         cur_data = self.GetPyData(cur_id)  
271    
272          if isinstance(cur_data, Layer):          if layer is not None:
273              self.map.LowerLayer(cur_data)              self.map.LowerLayer(layer)
         elif isinstance(cur_data, ClassGroup):  
             pass  
274          else:          else:
275              assert(False, "Shouldn't be here.")              assert False, "Shouldn't be allowed."
276              pass              pass
277    
278        def MoveCurrentItemBottom(self):
279            layer, group = self.GetSelectedHierarchy()
280    
281            if layer is not None:
282                self.map.BottomLayer(layer)
283            else:
284                assert False, "Shouldn't be allowed."
285                pass
286    
287      def OnCompareItems(self, item1, item2):      def OnCompareItems(self, item1, item2):
288    
289          data1 = self.GetPyData(item1)          data1 = self.GetPyData(item1)
290          data2 = self.GetPyData(item2)          data2 = self.GetPyData(item2)
291    
292          if isinstance(data1, Layer):          if isinstance(data1, BaseLayer):
293              layers = self.map.Layers()              layers = self.map.Layers()
294              return layers.index(data2) - layers.index(data1)              return layers.index(data2) - layers.index(data1)
295          else:          else:
296              return wxTreeCtrl.OnCompareItems(self, item1, item2)              return wxTreeCtrl.OnCompareItems(self, item1, item2)
297    
   
298      def DoOnShowLayer(self):      def DoOnShowLayer(self):
299          #self.__ShowHideLayer(True)          #self.__ShowHideLayer(True)
300          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
# Line 261  class LegendTree(wxTreeCtrl): Line 305  class LegendTree(wxTreeCtrl):
305          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
306          layer.SetVisible(False)          layer.SetVisible(False)
307    
 #   def DoOnClassify(self):  
 #       id = self.GetSelection()  
 #       assert(id.IsOk())  
   
 #       item = self.GetPyData(id)  
 #       if isinstance(item, ClassGroup):  
 #           id = self.GetItemParent(id)  
 #           assert(id.IsOk())  
 #           item = self.GetPyData(id)  
   
 #       # XXX: THIS IS SUCH AWFUL STYLE! YUCK!  
 #       self.parent.mainWindow.OpenClassifier(item)  
 #       #assert(False, "XXX: FIXME HERE")  
   
308      def Sort(self):      def Sort(self):
309          self.SortChildren(self.GetRootItem())          self.SortChildren(self.GetRootItem())
310    
311        def GetSelectedHierarchy(self):
312            id = self.GetSelection()
313    
314            if not id.IsOk():
315                return (None, None)
316    
317            layer = self.GetPyData(id)
318            group = None
319    
320            if isinstance(layer, ClassGroup):
321                id = self.GetItemParent(id)
322                assert id.IsOk()
323                group = layer
324                layer = self.GetPyData(id)
325    
326            return (layer, group)
327    
328      def _OnMsgMapsChanged(self):      def _OnMsgMapsChanged(self):
329          print "ADfsadfsadfsadfsa"          #print self.map is self.mainWindow.Map()
         print self.map is self.mainWindow.Map()  
330          self.SetMap(self.mainWindow.Map())          self.SetMap(self.mainWindow.Map())
331                    
332      def _OnSelChanged(self, event):      def _OnSelChanged(self, event):
333            self.__UpdateSelection()
         layer, group = self.GetSelectedHierarchy()  
         self.parent.DoOnSelChanged(layer, group)  
334    
335      def _OnItemActivated(self, event):      def _OnItemActivated(self, event):
336          self.parent.DoOnClassify()          self.parent.DoOnProperties()
337    
338      def _OnMsgLayerChanged(self, layer):      def _OnMsgLayerChanged(self, layer):
339          assert(isinstance(layer, Layer))          assert isinstance(layer, BaseLayer)
340    
341          id = self.layer2id[layer]          id = self.layer2id[layer]
342          assert(id.IsOk())          assert id.IsOk()
343    
344          # XXX: yikes! this is so bad, we should be doing what is          # XXX: yikes! this is so bad, we should be doing what is
345          #      commented out, but there is a problem with keeping          #      commented out, but there is a problem with keeping
346          #      track of the images in the image list when we replace          #      track of the images in the image list when we replace
347          #      a layer. it ends up causing a seg fault.          #      a layer. it ends up causing a seg fault.
348          self.__FillTree(self.map)          self.__FillTree(self.map)
349            self.__UpdateSelection()
350          #self.__FillTreeLayer(id)          #self.__FillTreeLayer(id)
351    
352      def _OnMsgMapStackingChanged(self, *args):      def _OnMsgMapStackingChanged(self, *args):
# Line 310  class LegendTree(wxTreeCtrl): Line 355  class LegendTree(wxTreeCtrl):
355    
356          if id.IsOk():          if id.IsOk():
357              self.EnsureVisible(id)              self.EnsureVisible(id)
358            self.__UpdateSelection()
359    
360      def _OnMsgMapLayersAddedRemoved(self, map):      def _OnMsgMapLayersAddedRemoved(self, map):
361          assert(map is self.map)          assert map is self.map
362    
363          self.__FillTree(self.map)          self.__FillTree(self.map)
364            self.__UpdateSelection()
365    
366      def _OnMsgLayerVisibilityChanged(self, layer):      def _OnMsgLayerVisibilityChanged(self, layer):
367          assert(isinstance(layer, Layer))          assert isinstance(layer, BaseLayer)
368    
369          self.__ShowHideLayer(layer)          self.__ShowHideLayer(layer)
370            self.__UpdateSelection()
371    
372      def GetSelectedHierarchy(self):      def _OnMsgLayerTitleChanged(self, layer):
         id = self.GetSelection()  
         assert(id.IsOk())  
   
         layer = self.GetPyData(id)  
         group = None  
   
         if isinstance(layer, ClassGroup):  
             id = self.GetItemParent(id)  
             assert(id.IsOk())  
             group = layer  
             layer = self.GetPyData(id)  
373    
374          return (layer, group)          id = self.layer2id[layer]
375            if id.IsOk():
376                self.SetItemText(id, layer.Title())
377            self.__UpdateSelection()
378    
379        def __UpdateSelection(self):
380            layer, group = self.GetSelectedHierarchy()
381            self.parent.DoOnSelChanged(layer, group)
382            
383      def __FillTree(self, map):      def __FillTree(self, map):
384    
         assert(isinstance(map, Map))  
   
385          self.Freeze()          self.Freeze()
386    
387          self.__DeleteAllItems()          self.__DeleteAllItems()
# Line 358  class LegendTree(wxTreeCtrl): Line 400  class LegendTree(wxTreeCtrl):
400              self.emptyImageIndex = \              self.emptyImageIndex = \
401                  self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))                  self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
402                                                                                                                                                                    
403                bmp = resource.GetBitmapResource("legend_icon_map",
404                                                  wxBITMAP_TYPE_XPM)
405                self.mapImageIndex = \
406                    self.image_list.Add(bmp)
407    
408              self.AssignImageList(self.image_list)              self.AssignImageList(self.image_list)
409    
410              root = self.AddRoot("")              root = self.AddRoot("")
411    
412              for l in map.Layers():              for l in map.Layers():
413                  id = self.PrependItem(root, l.Title())                  id = self.PrependItem(root, l.Title())
414                    self.SetItemImage(id, self.mapImageIndex)
415                    self.SetItemSelectedImage(id, self.mapImageIndex)
416    
417                  l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)                  l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
418                  l.Subscribe(LAYER_VISIBILITY_CHANGED,                  l.Subscribe(LAYER_VISIBILITY_CHANGED,
419                              self._OnMsgLayerVisibilityChanged)                              self._OnMsgLayerVisibilityChanged)
420                    l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
421                  self.SetPyData(id, l)                  self.SetPyData(id, l)
422                  font = self.GetItemFont(id)                  self.__SetVisibilityStyle(l.Visible(), id)
                 if not l.Visible():  
                     font.SetStyle(wxITALIC)  
                     self.SetItemFont(id, font)  
423    
424                  self.layer2id[l] = id                  self.layer2id[l] = id
425    
# Line 387  class LegendTree(wxTreeCtrl): Line 435  class LegendTree(wxTreeCtrl):
435    
436          self.DeleteChildren(pid)          self.DeleteChildren(pid)
437    
438          clazz = layer.GetClassification()          if layer.HasClassification():
   
         shapeType = layer.ShapeType()  
439    
440          for g in clazz:              clazz = layer.GetClassification()
             id = self.AppendItem(pid, g.GetDisplayText())  
             self.SetPyData(id, g)  
441    
442              bmp = self.__BuildGroupImage(g, shapeType)              shapeType = layer.ShapeType()
443    
444              if bmp is None:              show = layer.Visible()
445                  self.SetItemImage(id, self.emptyImageIndex)              for g in clazz:
446              else:                  if g.IsVisible():
447                  i = self.image_list.Add(bmp)                      id = self.AppendItem(pid, g.GetDisplayText())
448                  self.SetItemImage(id, i)                      self.SetPyData(id, g)
449                        self.__SetVisibilityStyle(show, id)
450    
451                        bmp = self.__BuildGroupImage(g, shapeType)
452    
453                        if bmp is None:
454                            self.SetItemImage(id, -1)
455                            self.SetItemSelectedImage(id, -1)
456                        else:
457                            i = self.image_list.Add(bmp)
458                            self.SetItemImage(id, i)
459                            self.SetItemSelectedImage(id, i)
460    
461          self.Thaw()          self.Thaw()
462    
463      def __BuildGroupImage(self, group, shapeType):      def __BuildGroupImage(self, group, shapeType):
         assert(isinstance(group, ClassGroup))  
464    
465          bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)          bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
466          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
# Line 426  class LegendTree(wxTreeCtrl): Line 480  class LegendTree(wxTreeCtrl):
480                                self._OnMsgLayerChanged)                                self._OnMsgLayerChanged)
481              layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,              layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
482                                self._OnMsgLayerVisibilityChanged)                                self._OnMsgLayerVisibilityChanged)
483                layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
484    
485          self.DeleteAllItems()          self.DeleteAllItems()
486    
487      def __ShowHideHelper(self, show, id):      def __SetVisibilityStyle(self, visible, id):
488          font = self.GetItemFont(id)          font = self.GetItemFont(id)
489    
490          if show:          if visible:
491              font.SetStyle(wxNORMAL)              font.SetStyle(wxNORMAL)
492              color = wxBLACK              color = wxBLACK
493          else:          else:
494              font.SetStyle(wxITALIC)              #font.SetStyle(wxITALIC)
495                font.SetStyle(wxNORMAL)
496              color = wxLIGHT_GREY              color = wxLIGHT_GREY
497    
498          self.SetItemTextColour(id, color)          self.SetItemTextColour(id, color)
# Line 444  class LegendTree(wxTreeCtrl): Line 500  class LegendTree(wxTreeCtrl):
500                    
501      def __ShowHideLayer(self, layer):      def __ShowHideLayer(self, layer):
502          parent = self.layer2id[layer]          parent = self.layer2id[layer]
503          assert(parent.IsOk())          assert parent.IsOk()
   
         show = layer.Visible()  
504    
505            visible = layer.Visible()
506    
507          self.__ShowHideHelper(show, parent)          self.__SetVisibilityStyle(visible, parent)
508    
509          id, cookie = self.GetFirstChild(parent, 123)          id, cookie = self.GetFirstChild(parent, 123)
510    
511          while id.IsOk():          while id.IsOk():
512              self.__ShowHideHelper(show, id)              self.__SetVisibilityStyle(visible, id)
513              id, cookie = self.GetNextChild(parent, cookie)              id, cookie = self.GetNextChild(parent, cookie)
514                            
515    class ScaleBarBitmap(wxBoxSizer):
516    
517        def __init__(self, parent, map, mainWindow):
518            # While the width is fixed, get the height _now_.
519            dc = wxMemoryDC()
520            textwidth, textheight = dc.GetTextExtent("%d"%0)
521            self.width = 210
522            self.height = textheight + 3*2 + 8
523    
524            wxBoxSizer.__init__(self, wxVERTICAL)
525            bmp=wxEmptyBitmap(self.width, self.height)
526            self.scalebarBitmap = wxStaticBitmap(parent, -1, bmp)
527            self.Add(self.scalebarBitmap, 0, wxALIGN_CENTER|wxLEFT|wxTOP|wxRIGHT, 1)
528    
529            self.mainWindow = mainWindow
530            self.parent = parent
531            self.canvas = None
532            self.SetCanvas(self.mainWindow.canvas)
533    
534        def SetCanvas(self, canvas):
535            sub_list = [(SCALE_CHANGED, self._OnMsgScaleChanged)]
536    
537            if self.canvas is not None:
538                for msg, func in sub_list: self.canvas.Unsubscribe(msg, func)
539            
540            self.canvas = canvas
541            self.scalebar = ScaleBar(canvas.map)
542    
543            if self.canvas is not None:
544                for msg, func in sub_list: self.canvas.Subscribe(msg, func)
545                self.__SetScale(self.canvas.scale)
546    
547        def _OnMsgScaleChanged(self, scale):
548            self.__SetScale(scale)
549    
550        def __SetScale(self, scale):
551            bmp = wxEmptyBitmap(self.width, self.height)
552            dc = wxMemoryDC()
553            dc.SelectObject(bmp)
554            dc.Clear()
555    
556            self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())
557    
558            self.scalebarBitmap.SetBitmap(bmp)
559    
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