/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/legend.py
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revision 568 by jonathan, Wed Mar 26 11:51:28 2003 UTC revision 990 by frank, Thu May 22 16:51:24 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.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  ID_LEGEND_MOVEUP = 4001  from Thuban.Lib.connector import ConnectorError
32  ID_LEGEND_MOVEDOWN = 4002  
33  ID_LEGEND_TREE = 4003  ID_LEGEND_TOP = 4001
34  ID_LEGEND_CLASSIFY = 4004  ID_LEGEND_RAISE = 4002
35  ID_LEGEND_SHOWLAYER = 4005  ID_LEGEND_LOWER = 4003
36  ID_LEGEND_HIDELAYER = 4006  ID_LEGEND_BOTTOM = 4004
37    ID_LEGEND_TREE = 4005
38    ID_LEGEND_PROPS = 4006
39    ID_LEGEND_SHOWLAYER = 4007
40    ID_LEGEND_HIDELAYER = 4008
41    
42  BMP_SIZE_W = 30  BMP_SIZE_W = 30
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 37  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            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)
127    
128    
129      def GetMap(self):      def GetMap(self):
130          return self.tree.GetMap()          return self.tree.GetMap()
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):
137    
138            ok = isinstance(layer, BaseLayer)
139            self.__EnableButtons(ok)
140    
141      def DoOnSelChanged(self, layer, group = None):          self.mainWindow.SelectLayer(layer)
         sel = self.tree.GetSelection()  
         self.__EnableButtons(sel.IsOk())  
142    
143          if sel.IsOk():      def DoOnProperties(self):
144              self.mainWindow.SelectLayer(layer)          list = self.tree.GetSelectedHierarchy()
145    
146      def _OnClassify(self, event):          ok = isinstance(list[0], BaseLayer)
147          self.tree.DoOnClassify()          if ok:
148                self.mainWindow.OpenLayerProperties(list[0], list[1])
149    
150        def Destroy(self):
151            self.__Close()
152    
153        def _OnProperties(self, event):
154            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
171    
172        #def Close(self, force = False):
173            #DockPanel.Close(self, force)
174            
175        def _OnClose(self, event):
176            self.__Close()
177    
178      def _OnHideLayer(self, event):      def _OnHideLayer(self, event):
179          self.tree.DoOnHideLayer()          self.tree.DoOnHideLayer()
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):
192            self.tree.Close()
193    
194  class LegendTree(wxTreeCtrl):  class LegendTree(wxTreeCtrl):
195    
# Line 124  class LegendTree(wxTreeCtrl): Line 198  class LegendTree(wxTreeCtrl):
198                              style = wxTR_DEFAULT_STYLE | wxTR_HIDE_ROOT,                              style = wxTR_DEFAULT_STYLE | wxTR_HIDE_ROOT,
199                              size = (200, 200))                              size = (200, 200))
200    
201            self.mainWindow = mainWindow
202          self.map = None          self.map = None
203          self.parent = parent          self.parent = parent
204          self.layer2id = None          self.layer2id = {}
   
205    
206          self.image_list = None          self.image_list = None
207          self.emptyImageIndex = 0          self.emptyImageIndex = 0
# Line 137  class LegendTree(wxTreeCtrl): Line 211  class LegendTree(wxTreeCtrl):
211          EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)          EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)
212          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
213    
214            EVT_CLOSE(self, self._OnClose)
215    
216          self.SetMap(map)          self.SetMap(map)
217    
218        def _OnClose(self, event):
219            self.SetMap(None)
220    
221      def GetMap(self):      def GetMap(self):
222          return self.map          return self.map
223    
# Line 150  class LegendTree(wxTreeCtrl): Line 229  class LegendTree(wxTreeCtrl):
229    
230          if self.map is not None:          if self.map is not None:
231              for msg, func in sub_list: self.map.Unsubscribe(msg, func)              for msg, func in sub_list: self.map.Unsubscribe(msg, func)
232                #self.mainWindow.application.Unsubscribe(SESSION_REPLACED,
233                    #self._OnMsgMapsChanged)
234                #try:
235                    #self.mainWindow.application.session.Unsubscribe(MAPS_CHANGED,
236                        #self._OnMsgMapsChanged)
237                #except ConnectorError:
238                    #pass
239              self.__DeleteAllItems()              self.__DeleteAllItems()
240                    
241          self.map = map          self.map = map
242    
243          if self.map is not None:          if self.map is not None:
244              for msg, func in sub_list: self.map.Subscribe(msg, func)              for msg, func in sub_list: self.map.Subscribe(msg, func)
245                #self.mainWindow.application.session.Subscribe(MAPS_CHANGED,
246                    #self._OnMsgMapsChanged)
247                #self.mainWindow.application.Subscribe(SESSION_REPLACED,
248                    #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()
301            layer.SetVisible(True)
302    
303      def DoOnHideLayer(self):      def DoOnHideLayer(self):
304          self.__ShowHideLayer(False)          #self.__ShowHideLayer(False)
305            layer, group = self.GetSelectedHierarchy()
306      def DoOnClassify(self):          layer.SetVisible(False)
         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")  
307    
308      def Sort(self):      def Sort(self):
309          self.SortChildren(self.GetRootItem())          self.SortChildren(self.GetRootItem())
310    
311      def _OnSelChanged(self, event):      def GetSelectedHierarchy(self):
312          id = self.GetSelection()          id = self.GetSelection()
         assert(id.IsOk())  
313    
314          group = None          if not id.IsOk():
315                return (None, None)
316    
317          layer = self.GetPyData(id)          layer = self.GetPyData(id)
318            group = None
319    
320          if isinstance(layer, ClassGroup):          if isinstance(layer, ClassGroup):
321              id = self.GetItemParent(id)              id = self.GetItemParent(id)
322              assert(id.IsOk())              assert id.IsOk()
323              group = layer              group = layer
324              layer = self.GetPyData(id)              layer = self.GetPyData(id)
325    
326          self.parent.DoOnSelChanged(layer, group)          return (layer, group)
327    
328        def _OnMsgMapsChanged(self):
329            #print self.map is self.mainWindow.Map()
330            self.SetMap(self.mainWindow.Map())
331            
332        def _OnSelChanged(self, event):
333            self.__UpdateSelection()
334    
335      def _OnItemActivated(self, event):      def _OnItemActivated(self, event):
336          self.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()
343    
344          self.__FillTreeLayer(id)          # XXX: yikes! this is so bad, we should be doing what is
345            #      commented out, but there is a problem with keeping
346            #      track of the images in the image list when we replace
347            #      a layer. it ends up causing a seg fault.
348            self.__FillTree(self.map)
349            self.__UpdateSelection()
350            #self.__FillTreeLayer(id)
351    
352      def _OnMsgMapStackingChanged(self, *args):      def _OnMsgMapStackingChanged(self, *args):
353          self.Sort()          self.Sort()
# Line 260  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(id(map) == id(self.map))          assert map is self.map
362    
363          self.__FillTree(self.map)          self.__FillTree(self.map)
364            self.__UpdateSelection()
365    
366      def __FillTree(self, map):      def _OnMsgLayerVisibilityChanged(self, layer):
367            assert isinstance(layer, BaseLayer)
368    
369            self.__ShowHideLayer(layer)
370            self.__UpdateSelection()
371    
372        def _OnMsgLayerTitleChanged(self, layer):
373    
374          assert(isinstance(map, Map))          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):
384    
385          self.Freeze()          self.Freeze()
386    
# Line 295  class LegendTree(wxTreeCtrl): Line 407  class LegendTree(wxTreeCtrl):
407              for l in map.Layers():              for l in map.Layers():
408                  id = self.PrependItem(root, l.Title())                  id = self.PrependItem(root, l.Title())
409                  l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)                  l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
410                    l.Subscribe(LAYER_VISIBILITY_CHANGED,
411                                self._OnMsgLayerVisibilityChanged)
412                    l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
413                  self.SetPyData(id, l)                  self.SetPyData(id, l)
414                  font = self.GetItemFont(id)                  self.__SetVisibilityStyle(l.Visible(), id)
                 if not l.Visible():  
                     font.SetStyle(wxITALIC)  
                     self.SetItemFont(id, font)  
415    
416                  self.layer2id[l] = id                  self.layer2id[l] = id
417    
# Line 315  class LegendTree(wxTreeCtrl): Line 427  class LegendTree(wxTreeCtrl):
427    
428          self.DeleteChildren(pid)          self.DeleteChildren(pid)
429    
430          clazz = layer.GetClassification()          if layer.HasClassification():
   
         shapeType = layer.ShapeType()  
   
         for g in clazz:  
             id = self.AppendItem(pid, g.GetDisplayText())  
             self.SetPyData(id, g)  
431    
432              bmp = self.__BuildGroupImage(g, shapeType)              clazz = layer.GetClassification()
433    
434              if bmp is None:              shapeType = layer.ShapeType()
                 self.SetItemImage(id, self.emptyImageIndex)  
             else:  
                 i = self.image_list.Add(bmp)  
                 self.SetItemImage(id, i)  
435    
436              #self.layer2id[g] = id              show = layer.Visible()
437                for g in clazz:
438                    if g.IsVisible():
439                        id = self.AppendItem(pid, g.GetDisplayText())
440                        self.SetPyData(id, g)
441                        self.__SetVisibilityStyle(show, id)
442    
443                        bmp = self.__BuildGroupImage(g, shapeType)
444    
445                        if bmp is None:
446                            self.SetItemImage(id, self.emptyImageIndex)
447                        else:
448                            i = self.image_list.Add(bmp)
449                            self.SetItemImage(id, i)
450    
451          self.Thaw()          self.Thaw()
452    
453      def __BuildGroupImage(self, group, shapeType):      def __BuildGroupImage(self, group, shapeType):
         assert(isinstance(group, ClassGroup))  
454    
455          bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)          bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
456          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
# Line 349  class LegendTree(wxTreeCtrl): Line 463  class LegendTree(wxTreeCtrl):
463          return bmp          return bmp
464    
465      def __DeleteAllItems(self):      def __DeleteAllItems(self):
466    
467            while len(self.layer2id) > 0:
468                layer, id = self.layer2id.popitem()
469                layer.Unsubscribe(LAYER_CHANGED,
470                                  self._OnMsgLayerChanged)
471                layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
472                                  self._OnMsgLayerVisibilityChanged)
473                layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
474    
475          self.DeleteAllItems()          self.DeleteAllItems()
         self.layer2id = {}  
476    
477        def __SetVisibilityStyle(self, visible, id):
478            font = self.GetItemFont(id)
479    
480      def __ShowHideLayer(self, show):          if visible:
481          id = self.GetSelection()              font.SetStyle(wxNORMAL)
482          assert(id.IsOk())              color = wxBLACK
483            else:
484                #font.SetStyle(wxITALIC)
485                font.SetStyle(wxNORMAL)
486                color = wxLIGHT_GREY
487    
488            self.SetItemTextColour(id, color)
489            self.SetItemFont(id, font)
490                    
491          item = self.GetPyData(id)      def __ShowHideLayer(self, layer):
492          if isinstance(item, ClassGroup):          parent = self.layer2id[layer]
493              id = self.GetItemParent(id)          assert parent.IsOk()
494              assert(id.IsOk())  
495              item = self.GetPyData(id)          visible = layer.Visible()
496    
497            self.__SetVisibilityStyle(visible, parent)
498    
499            id, cookie = self.GetFirstChild(parent, 123)
500    
501            while id.IsOk():
502                self.__SetVisibilityStyle(visible, id)
503                id, cookie = self.GetNextChild(parent, cookie)
504                
505    class ScaleBarBitmap(wxBoxSizer):
506    
507        def __init__(self, parent, map, mainWindow):
508            # While the width is fixed, get the height _now_.
509            dc = wxMemoryDC()
510            textwidth, textheight = dc.GetTextExtent("%d"%0)
511            self.width = 210
512            self.height = textheight + 3*2 + 8
513    
514            wxBoxSizer.__init__(self, wxVERTICAL)
515            bmp=wxEmptyBitmap(self.width, self.height)
516            self.scalebarBitmap = wxStaticBitmap(parent, -1, bmp)
517            self.Add(self.scalebarBitmap, 0, wxALIGN_CENTER|wxLEFT|wxTOP|wxRIGHT, 1)
518    
519            self.mainWindow = mainWindow
520            self.parent = parent
521            self.canvas = None
522            self.SetCanvas(self.mainWindow.canvas)
523    
524          if show != item.Visible():      def SetCanvas(self, canvas):
525            sub_list = [(SCALE_CHANGED, self._OnMsgScaleChanged)]
526    
527              item.SetVisible(show)          if self.canvas is not None:
528                for msg, func in sub_list: self.canvas.Unsubscribe(msg, func)
529            
530            self.canvas = canvas
531            self.scalebar = ScaleBar(canvas.map)
532    
533              font = self.GetItemFont(id)          if self.canvas is not None:
534              if show:              for msg, func in sub_list: self.canvas.Subscribe(msg, func)
535                  font.SetStyle(wxNORMAL)              self.__SetScale(self.canvas.scale)
536                  self.SetItemFont(id, font)  
537              else:      def _OnMsgScaleChanged(self, scale):
538                  font.SetStyle(wxITALIC)          self.__SetScale(scale)
539                  self.SetItemFont(id, font)  
540        def __SetScale(self, scale):
541            bmp = wxEmptyBitmap(self.width, self.height)
542            dc = wxMemoryDC()
543            dc.SelectObject(bmp)
544            dc.Clear()
545    
546            self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())
547    
548            self.scalebarBitmap.SetBitmap(bmp)
549    
Legend:
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  Added in v.990
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