/[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 1119 by bh, Mon Jun 2 10:37:59 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 156  class LegendTree(wxTreeCtrl): Line 202  class LegendTree(wxTreeCtrl):
202          self.map = None          self.map = None
203          self.parent = parent          self.parent = parent
204          self.layer2id = {}          self.layer2id = {}
205            self.changing_selection = 0
206    
207            #
208            # The image list used by the wxTreeCtrl causes problems when
209            # we remove layers and/or change a classification because it
210            # changes the image indices if you remove images from the list.
211            # Rather than removing unused images we use this list to keep
212            # track of which indices are available in the image list
213            # (because of a previous removal) and then  replace those indices
214            # with new images rather than appending to the end of the image
215            # list (assuming there are any that are available).
216            #
217            self.availImgListIndices = []
218    
219          self.image_list = None          self.image_list = None
220          self.emptyImageIndex = 0          self.emptyImageIndex = 0
# Line 178  class LegendTree(wxTreeCtrl): Line 237  class LegendTree(wxTreeCtrl):
237      def SetMap(self, map):      def SetMap(self, map):
238    
239          sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged),          sub_list = [(MAP_STACKING_CHANGED, self._OnMsgMapStackingChanged),
240                      (MAP_LAYERS_ADDED, self._OnMsgMapLayersAddedRemoved),                      (MAP_LAYERS_ADDED, self._OnMsgMapLayersAdded),
241                      (MAP_LAYERS_REMOVED, self._OnMsgMapLayersAddedRemoved)]                      (MAP_LAYERS_REMOVED, self._OnMsgMapLayersRemoved)]
242    
243          if self.map is not None:          if self.map is not None:
244              for msg, func in sub_list: self.map.Unsubscribe(msg, func)              for msg, func in sub_list: self.map.Unsubscribe(msg, func)
# Line 190  class LegendTree(wxTreeCtrl): Line 249  class LegendTree(wxTreeCtrl):
249                      #self._OnMsgMapsChanged)                      #self._OnMsgMapsChanged)
250              #except ConnectorError:              #except ConnectorError:
251                  #pass                  #pass
252              self.__DeleteAllItems()              self.DeleteAllItems()
253                    
254          self.map = map          self.map = map
255    
# Line 202  class LegendTree(wxTreeCtrl): Line 261  class LegendTree(wxTreeCtrl):
261                  #self._OnMsgMapsChanged)                  #self._OnMsgMapsChanged)
262              self.__FillTree(self.map)              self.__FillTree(self.map)
263    
264                    def MoveCurrentItemTop(self):
265      def MoveCurrentItemUp(self):          layer, group = self.GetSelectedHierarchy()
         cur_id = self.GetSelection()  
         assert(cur_id.IsOk())  
   
         cur_data = self.GetPyData(cur_id)  
266    
267          #prev_id = self.GetPrevSibling(cur_id)          if layer is not None:
268                self.map.MoveLayerToTop(layer)
269            else:
270                assert False, "Shouldn't be allowed."
271                pass
272    
273          #      def MoveCurrentItemUp(self):
274          # Get out if there's nowhere to go          layer, group = self.GetSelectedHierarchy()
         #  
         #if prev_id == INVALID_TREE_ID: return  
275    
276          if isinstance(cur_data, Layer):          if layer is not None:
277              self.map.RaiseLayer(cur_data)              self.map.RaiseLayer(layer)
         elif isinstance(cur_data, ClassGroup):  
             pass  
278          else:          else:
279              assert(False, "Shouldn't be here.")              assert False, "Shouldn't be allowed."
280              pass              pass
281    
282      def MoveCurrentItemDown(self):      def MoveCurrentItemDown(self):
283          cur_id = self.GetSelection()          layer, group = self.GetSelectedHierarchy()
         assert(cur_id.IsOk())  
   
         cur_data = self.GetPyData(cur_id)  
284    
285          if isinstance(cur_data, Layer):          if layer is not None:
286              self.map.LowerLayer(cur_data)              self.map.LowerLayer(layer)
         elif isinstance(cur_data, ClassGroup):  
             pass  
287          else:          else:
288              assert(False, "Shouldn't be here.")              assert False, "Shouldn't be allowed."
289              pass              pass
290    
291        def MoveCurrentItemBottom(self):
292            layer, group = self.GetSelectedHierarchy()
293    
294            if layer is not None:
295                self.map.MoveLayerToBottom(layer)
296            else:
297                assert False, "Shouldn't be allowed."
298                pass
299    
300      def OnCompareItems(self, item1, item2):      def OnCompareItems(self, item1, item2):
301    
302          data1 = self.GetPyData(item1)          data1 = self.GetPyData(item1)
303          data2 = self.GetPyData(item2)          data2 = self.GetPyData(item2)
304    
305          if isinstance(data1, Layer):          if isinstance(data1, BaseLayer):
306              layers = self.map.Layers()              layers = self.map.Layers()
307              return layers.index(data2) - layers.index(data1)              return layers.index(data2) - layers.index(data1)
308          else:          else:
309              return wxTreeCtrl.OnCompareItems(self, item1, item2)              return wxTreeCtrl.OnCompareItems(self, item1, item2)
310    
   
311      def DoOnShowLayer(self):      def DoOnShowLayer(self):
         #self.__ShowHideLayer(True)  
312          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
313          layer.SetVisible(True)          layer.SetVisible(True)
314    
315      def DoOnHideLayer(self):      def DoOnHideLayer(self):
         #self.__ShowHideLayer(False)  
316          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
317          layer.SetVisible(False)          layer.SetVisible(False)
318    
 #   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")  
   
319      def Sort(self):      def Sort(self):
320          self.SortChildren(self.GetRootItem())          self.SortChildren(self.GetRootItem())
321    
322        def GetSelectedHierarchy(self):
323            id = self.GetSelection()
324    
325            if not id.IsOk():
326                return (None, None)
327    
328            layer = self.GetPyData(id)
329            group = None
330    
331            if isinstance(layer, ClassGroup):
332                id = self.GetItemParent(id)
333                assert id.IsOk()
334                group = layer
335                layer = self.GetPyData(id)
336    
337            return (layer, group)
338    
339      def _OnMsgMapsChanged(self):      def _OnMsgMapsChanged(self):
340          print "ADfsadfsadfsadfsa"          #print self.map is self.mainWindow.Map()
         print self.map is self.mainWindow.Map()  
341          self.SetMap(self.mainWindow.Map())          self.SetMap(self.mainWindow.Map())
342                    
343      def _OnSelChanged(self, event):      def _OnSelChanged(self, event):
344            # If we change the selection from normalize_selection do nothing.
345            if self.changing_selection:
346                return
347    
348            self.normalize_selection()
349            self.__UpdateSelection()
350    
351        def normalize_selection(self):
352            """Select the layer containing currently selected item"""
353            # This is really a workaround for a bug in wx where deleting a
354            # subtree with DeleteChildren does not update the selection
355            # properly and can lead to segfaults later because the return
356            # value of GetSelection points to invalid data.
357            item = self.GetSelection()
358            while item.IsOk():
359                object = self.GetPyData(item)
360                if isinstance(object, BaseLayer):
361                    break
362                item = self.GetItemParent(item)
363            else:
364                # No layer was found in the chain of parents, so there's
365                # nothing we can do.
366                return
367    
368            self.changing_selection = 1
369            try:
370                self.SelectItem(item)
371            finally:
372                self.changing_selection = 0
373    
         layer, group = self.GetSelectedHierarchy()  
         self.parent.DoOnSelChanged(layer, group)  
374    
375      def _OnItemActivated(self, event):      def _OnItemActivated(self, event):
376          self.parent.DoOnClassify()          self.parent.DoOnProperties()
377    
378      def _OnMsgLayerChanged(self, layer):      def _OnMsgLayerChanged(self, layer):
379          assert(isinstance(layer, Layer))          assert isinstance(layer, BaseLayer)
380    
381          id = self.layer2id[layer]          id = self.layer2id[layer]
382          assert(id.IsOk())          assert id.IsOk()
383    
384          # XXX: yikes! this is so bad, we should be doing what is          self.__FillTreeLayer(id)
385          #      commented out, but there is a problem with keeping          self.__UpdateSelection()
         #      track of the images in the image list when we replace  
         #      a layer. it ends up causing a seg fault.  
         self.__FillTree(self.map)  
         #self.__FillTreeLayer(id)  
386    
387      def _OnMsgMapStackingChanged(self, *args):      def _OnMsgMapStackingChanged(self, *args):
388          self.Sort()          self.Sort()
# Line 310  class LegendTree(wxTreeCtrl): Line 390  class LegendTree(wxTreeCtrl):
390    
391          if id.IsOk():          if id.IsOk():
392              self.EnsureVisible(id)              self.EnsureVisible(id)
393            self.__UpdateSelection()
394    
395      def _OnMsgMapLayersAddedRemoved(self, map):      def _OnMsgMapLayersAdded(self, map):
396          assert(map is self.map)          assert map is self.map
397    
398          self.__FillTree(self.map)          root = self.GetRootItem()
399    
400      def _OnMsgLayerVisibilityChanged(self, layer):          i = 0
401          assert(isinstance(layer, Layer))          for l in map.Layers():
402                if not self.layer2id.has_key(l):
403                    self.__AddLayer(i, l)
404    
405          self.__ShowHideLayer(layer)          self.__UpdateSelection()
406    
407      def GetSelectedHierarchy(self):      def _OnMsgMapLayersRemoved(self, map):
408          id = self.GetSelection()          assert map is self.map
         assert(id.IsOk())  
409    
410          layer = self.GetPyData(id)          layers = map.Layers()
         group = None  
411    
412          if isinstance(layer, ClassGroup):          for layer, id in self.layer2id.items():
413              id = self.GetItemParent(id)              if layer not in layers:
414              assert(id.IsOk())                  if id.IsOk():
415              group = layer                      self.__RemoveLayer(id)
             layer = self.GetPyData(id)  
416    
417          return (layer, group)          self.__UpdateSelection()
418    
419      def __FillTree(self, map):      def _OnMsgLayerVisibilityChanged(self, layer):
420            assert isinstance(layer, BaseLayer)
421    
422          assert(isinstance(map, Map))          self.__ShowHideLayer(layer)
423            self.__UpdateSelection()
424    
425          self.Freeze()      def _OnMsgLayerTitleChanged(self, layer):
426    
427          self.__DeleteAllItems()          id = self.layer2id[layer]
428            if id.IsOk():
429                self.SetItemText(id, layer.Title())
430            self.__UpdateSelection()
431    
432          if map.HasLayers():      def __UpdateSelection(self):
433            layer, group = self.GetSelectedHierarchy()
434            self.parent.DoOnSelChanged(layer, group)
435            
436        def __FillTree(self, map):
437    
438              self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)          self.Freeze()
                                                                                   
             bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)  
             dc = wxMemoryDC()  
             dc.SelectObject(bmp)  
             dc.SetBrush(wxBLACK_BRUSH)  
             dc.Clear()  
             dc.SelectObject(wxNullBitmap)  
                                                                                   
             self.emptyImageIndex = \  
                 self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))  
                                                                                   
             self.AssignImageList(self.image_list)  
439    
440              root = self.AddRoot("")          self.DeleteAllItems()
441    
442            if map.HasLayers():
443                root = self.GetRootItem()
444              for l in map.Layers():              for l in map.Layers():
445                  id = self.PrependItem(root, l.Title())                  self.__AddLayer(0, l)
                 l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)  
                 l.Subscribe(LAYER_VISIBILITY_CHANGED,  
                             self._OnMsgLayerVisibilityChanged)  
                 self.SetPyData(id, l)  
                 font = self.GetItemFont(id)  
                 if not l.Visible():  
                     font.SetStyle(wxITALIC)  
                     self.SetItemFont(id, font)  
   
                 self.layer2id[l] = id  
   
                 self.__FillTreeLayer(id)  
                 self.Expand(id)  
446    
447          self.Thaw()          self.Thaw()
448    
# Line 387  class LegendTree(wxTreeCtrl): Line 453  class LegendTree(wxTreeCtrl):
453    
454          self.DeleteChildren(pid)          self.DeleteChildren(pid)
455    
456          clazz = layer.GetClassification()          if layer.HasClassification():
457    
458          shapeType = layer.ShapeType()              clazz = layer.GetClassification()
459    
460          for g in clazz:              shapeType = layer.ShapeType()
             id = self.AppendItem(pid, g.GetDisplayText())  
             self.SetPyData(id, g)  
461    
462              bmp = self.__BuildGroupImage(g, shapeType)              show = layer.Visible()
463                for g in clazz:
464                    if g.IsVisible():
465                        id = self.AppendItem(pid, g.GetDisplayText())
466                        self.SetPyData(id, g)
467                        self.__SetVisibilityStyle(show, id)
468    
469                        bmp = self.__BuildGroupImage(g, shapeType)
470    
471                        if bmp is None:
472                            self.SetItemImage(id, -1)
473                            self.SetItemSelectedImage(id, -1)
474                        else:
475                            if self.availImgListIndices:
476                                i = self.availImgListIndices.pop(0)
477                                self.image_list.Replace(i, bmp)
478                            else:
479                                i = self.image_list.Add(bmp)
480    
481              if bmp is None:                          self.SetItemImage(id, i)
482                  self.SetItemImage(id, self.emptyImageIndex)                          self.SetItemSelectedImage(id, i)
             else:  
                 i = self.image_list.Add(bmp)  
                 self.SetItemImage(id, i)  
483    
484          self.Thaw()          self.Thaw()
485    
486      def __BuildGroupImage(self, group, shapeType):      def __BuildGroupImage(self, group, shapeType):
         assert(isinstance(group, ClassGroup))  
487    
488          bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)          bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
489          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
# Line 418  class LegendTree(wxTreeCtrl): Line 495  class LegendTree(wxTreeCtrl):
495    
496          return bmp          return bmp
497    
498      def __DeleteAllItems(self):      def DeleteAllItems(self):
499    
500          while len(self.layer2id) > 0:          pid = self.GetRootItem()
             layer, id = self.layer2id.popitem()  
             layer.Unsubscribe(LAYER_CHANGED,  
                               self._OnMsgLayerChanged)  
             layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,  
                               self._OnMsgLayerVisibilityChanged)  
501    
502          self.DeleteAllItems()          id, cookie = self.GetFirstChild(pid, 123)
503            while id.IsOk():
504                self.__RemoveLayer(id)
505                id, cookie = self.GetNextChild(pid, cookie)
506    
507            wxTreeCtrl.DeleteAllItems(self)
508    
509        def __AddLayer(self, before, l):
510            root = self.GetRootItem()
511            id = self.InsertItemBefore(root, before,
512                                l.Title(),
513                                self.mapImageIndex,
514                                self.mapImageIndex)
515    
516            self.SetPyData(id, l)
517            self.__SetVisibilityStyle(l.Visible(), id)
518    
519            self.layer2id[l] = id
520    
521            self.__FillTreeLayer(id)
522            self.Expand(id)
523    
524            l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
525            l.Subscribe(LAYER_VISIBILITY_CHANGED,
526                        self._OnMsgLayerVisibilityChanged)
527            l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
528    
529        def __RemoveLayer(self, id):
530            self.DeleteChildren(id)
531    
532            layer = self.GetPyData(id)
533            layer.Unsubscribe(LAYER_CHANGED,
534                              self._OnMsgLayerChanged)
535            layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
536                              self._OnMsgLayerVisibilityChanged)
537            layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
538    
539            self.Delete(id)
540            del self.layer2id[layer]
541    
542        def DeleteChildren(self, pid):
543            id, cookie = self.GetFirstChild(pid, 123)
544            while id.IsOk():
545                self.availImgListIndices.append(self.GetItemImage(id))
546                id, cookie = self.GetNextChild(pid, cookie)
547            wxTreeCtrl.DeleteChildren(self, pid)
548    
549        def GetRootItem(self):
550            root = wxTreeCtrl.GetRootItem(self)
551    
552            if not root.IsOk():
553                self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)
554    
555                bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
556                dc = wxMemoryDC()
557                dc.SelectObject(bmp)
558                dc.SetBrush(wxBLACK_BRUSH)
559                dc.Clear()
560                dc.SelectObject(wxNullBitmap)
561    
562                self.emptyImageIndex = \
563                    self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))
564    
565                bmp = resource.GetBitmapResource("legend_icon_layer",
566                                                  wxBITMAP_TYPE_XPM)
567                self.mapImageIndex = \
568                    self.image_list.Add(bmp)
569    
570                self.AssignImageList(self.image_list)
571                self.availImgListIndices = []
572    
573      def __ShowHideHelper(self, show, id):              root = self.AddRoot("")
574    
575            return root
576    
577        def __SetVisibilityStyle(self, visible, id):
578          font = self.GetItemFont(id)          font = self.GetItemFont(id)
579    
580          if show:          if visible:
581              font.SetStyle(wxNORMAL)              font.SetStyle(wxNORMAL)
582              color = wxBLACK              color = wxBLACK
583          else:          else:
584              font.SetStyle(wxITALIC)              #font.SetStyle(wxITALIC)
585                font.SetStyle(wxNORMAL)
586              color = wxLIGHT_GREY              color = wxLIGHT_GREY
587    
588          self.SetItemTextColour(id, color)          self.SetItemTextColour(id, color)
# Line 444  class LegendTree(wxTreeCtrl): Line 590  class LegendTree(wxTreeCtrl):
590                    
591      def __ShowHideLayer(self, layer):      def __ShowHideLayer(self, layer):
592          parent = self.layer2id[layer]          parent = self.layer2id[layer]
593          assert(parent.IsOk())          assert parent.IsOk()
594    
595          show = layer.Visible()          visible = layer.Visible()
596    
597            self.__SetVisibilityStyle(visible, parent)
         self.__ShowHideHelper(show, parent)  
598    
599          id, cookie = self.GetFirstChild(parent, 123)          id, cookie = self.GetFirstChild(parent, 123)
600    
601          while id.IsOk():          while id.IsOk():
602              self.__ShowHideHelper(show, id)              self.__SetVisibilityStyle(visible, id)
603              id, cookie = self.GetNextChild(parent, cookie)              id, cookie = self.GetNextChild(parent, cookie)
604                            
605    class ScaleBarBitmap(wxBoxSizer):
606    
607        def __init__(self, parent, map, mainWindow):
608            # While the width is fixed, get the height _now_.
609            dc = wxMemoryDC()
610            textwidth, textheight = dc.GetTextExtent("%d"%0)
611            self.width = 210
612            self.height = textheight + 3*2 + 8
613    
614            wxBoxSizer.__init__(self, wxVERTICAL)
615            bmp=wxEmptyBitmap(self.width, self.height)
616            self.scalebarBitmap = wxStaticBitmap(parent, -1, bmp)
617            self.Add(self.scalebarBitmap, 0, wxALIGN_CENTER|wxLEFT|wxTOP|wxRIGHT, 1)
618    
619            self.mainWindow = mainWindow
620            self.parent = parent
621            self.canvas = None
622            self.SetCanvas(self.mainWindow.canvas)
623    
624        def SetCanvas(self, canvas):
625            sub_list = [(SCALE_CHANGED, self._OnMsgScaleChanged)]
626    
627            if self.canvas is not None:
628                for msg, func in sub_list: self.canvas.Unsubscribe(msg, func)
629            
630            self.canvas = canvas
631            self.scalebar = ScaleBar(canvas.map)
632    
633            if self.canvas is not None:
634                for msg, func in sub_list: self.canvas.Subscribe(msg, func)
635                self.__SetScale(self.canvas.scale)
636    
637        def _OnMsgScaleChanged(self, scale):
638            self.__SetScale(scale)
639    
640        def __SetScale(self, scale):
641            bmp = wxEmptyBitmap(self.width, self.height)
642            dc = wxMemoryDC()
643            dc.SelectObject(bmp)
644            dc.Clear()
645    
646            self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())
647    
648            self.scalebarBitmap.SetBitmap(bmp)
649    
Legend:
Removed from v.578  
changed lines
  Added in v.1119
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