/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/legend.py
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trunk/thuban/Thuban/UI/legend.py revision 1180 by jonathan, Thu Jun 12 16:28:54 2003 UTC branches/WIP-pyshapelib-bramz/Thuban/UI/legend.py revision 2734 by bramz, Thu Mar 1 12:42:59 2007 UTC
# Line 1  Line 1 
1  # Copyright (c) 2001, 2002, 2003 by Intevation GmbH  # Copyright (c) 2001, 2002, 2003, 2005 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jonathan Coles <[email protected]>  # Jonathan Coles <[email protected]>
4  # Frank Koormann <[email protected]>  # Frank Koormann <[email protected]>
# Line 8  Line 8 
8    
9  __version__ = "$Revision$"  __version__ = "$Revision$"
10    
11    from  math import fabs, cos, pi
12    
13  from Thuban import _  from Thuban import _
14    
15  import resource  import resource
16    
17  from wxPython.wx import *  import wx
18    
19  from Thuban.Model.layer import BaseLayer  from Thuban.Model.layer import BaseLayer
20  from Thuban.Model.map import Map  from Thuban.Model.map import Map
21  from Thuban.Model.classification import ClassGroup  from Thuban.Model.classification import ClassGroup
22    from Thuban.Model.proj import PROJ_UNITS_DEGREES
23    
24  from Thuban.Model.messages import \  from Thuban.Model.messages import \
25      MAP_STACKING_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED, LAYER_CHANGED,\      MAP_STACKING_CHANGED, MAP_LAYERS_ADDED, MAP_LAYERS_REMOVED, LAYER_CHANGED,\
# Line 28  from Thuban.UI.classifier import ClassDa Line 31  from Thuban.UI.classifier import ClassDa
31  from Thuban.UI.dock import DockPanel  from Thuban.UI.dock import DockPanel
32  from Thuban.UI.scalebar import ScaleBar  from Thuban.UI.scalebar import ScaleBar
33    
34    from Thuban.UI.menu import Menu
35    
36  from Thuban.Lib.connector import ConnectorError  from Thuban.Lib.connector import ConnectorError
37    
38  ID_LEGEND_TOP = 4001  ID_LEGEND_TOP = 4001
# Line 39  ID_LEGEND_PROPS = 4006 Line 44  ID_LEGEND_PROPS = 4006
44  ID_LEGEND_SHOWLAYER = 4007  ID_LEGEND_SHOWLAYER = 4007
45  ID_LEGEND_HIDELAYER = 4008  ID_LEGEND_HIDELAYER = 4008
46    
47  BMP_SIZE_W = 15  BMP_SIZE_W = 16
48  BMP_SIZE_H = 15  BMP_SIZE_H = 16
49    
50  TOP_BMP = "top_layer"  TOP_BMP = "top_layer"
51  RAISE_BMP = "raise_layer"  RAISE_BMP = "raise_layer"
# Line 50  SHOW_BMP  = "show_layer" Line 55  SHOW_BMP  = "show_layer"
55  HIDE_BMP  = "hide_layer"  HIDE_BMP  = "hide_layer"
56  PROPS_BMP = "layer_properties"  PROPS_BMP = "layer_properties"
57    
   
58  class LegendPanel(DockPanel):  class LegendPanel(DockPanel):
59    
60      def __init__(self, parent, map, mainWindow):      def __init__(self, parent, map, mainWindow):
61          DockPanel.__init__(self, parent, -1)          DockPanel.__init__(self, parent, -1)
62    
63          self.mainWindow = mainWindow          self.mainWindow = mainWindow
# Line 61  class LegendPanel(DockPanel): Line 65  class LegendPanel(DockPanel):
65    
66          self.buttons = []          self.buttons = []
67    
68          panelBox = wxBoxSizer(wxVERTICAL)          panelBox = wx.BoxSizer(wx.VERTICAL)
69    
70          self.toolBar = wxToolBar(self, -1)          self.toolBar = wx.ToolBar(self, -1)
71          self.toolBar.SetToolBitmapSize(wxSize(24, 24))          self.toolBar.SetToolBitmapSize(wx.Size(24, 24))
72    
73          bmp = resource.GetBitmapResource(TOP_BMP, wxBITMAP_TYPE_XPM)          bmp = resource.GetBitmapResource(TOP_BMP, wx.BITMAP_TYPE_XPM)
74          self.toolBar.AddTool(ID_LEGEND_TOP, bmp,          self.toolBar.AddTool(ID_LEGEND_TOP, bmp,
75              shortHelpString=_("Top Layer"))              shortHelpString=_("Top Layer"))
76    
77          bmp = resource.GetBitmapResource(RAISE_BMP, wxBITMAP_TYPE_XPM)          bmp = resource.GetBitmapResource(RAISE_BMP, wx.BITMAP_TYPE_XPM)
78          self.toolBar.AddTool(ID_LEGEND_RAISE, bmp,          self.toolBar.AddTool(ID_LEGEND_RAISE, bmp,
79              shortHelpString=_("Raise Layer"))              shortHelpString=_("Raise Layer"))
80    
81          bmp = resource.GetBitmapResource(LOWER_BMP, wxBITMAP_TYPE_XPM)          bmp = resource.GetBitmapResource(LOWER_BMP, wx.BITMAP_TYPE_XPM)
82          self.toolBar.AddTool(ID_LEGEND_LOWER, bmp,          self.toolBar.AddTool(ID_LEGEND_LOWER, bmp,
83              shortHelpString=_("Lower Layer"))              shortHelpString=_("Lower Layer"))
84    
85          bmp = resource.GetBitmapResource(BOTTOM_BMP, wxBITMAP_TYPE_XPM)          bmp = resource.GetBitmapResource(BOTTOM_BMP, wx.BITMAP_TYPE_XPM)
86          self.toolBar.AddTool(ID_LEGEND_BOTTOM, bmp,          self.toolBar.AddTool(ID_LEGEND_BOTTOM, bmp,
87              shortHelpString=_("Bottom Layer"))              shortHelpString=_("Bottom Layer"))
88    
89          bmp = resource.GetBitmapResource(SHOW_BMP, wxBITMAP_TYPE_XPM)          bmp = resource.GetBitmapResource(SHOW_BMP, wx.BITMAP_TYPE_XPM)
90          self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp,          self.toolBar.AddTool(ID_LEGEND_SHOWLAYER, bmp,
91              shortHelpString=_("Show Layer"))              shortHelpString=_("Show Layer"))
92    
93          bmp = resource.GetBitmapResource(HIDE_BMP, wxBITMAP_TYPE_XPM)          bmp = resource.GetBitmapResource(HIDE_BMP, wx.BITMAP_TYPE_XPM)
94          self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp,          self.toolBar.AddTool(ID_LEGEND_HIDELAYER, bmp,
95              shortHelpString=_("Hide Layer"))              shortHelpString=_("Hide Layer"))
96    
97          bmp = resource.GetBitmapResource(PROPS_BMP, wxBITMAP_TYPE_XPM)          bmp = resource.GetBitmapResource(PROPS_BMP, wx.BITMAP_TYPE_XPM)
98          self.toolBar.AddTool(ID_LEGEND_PROPS, bmp,          self.toolBar.AddTool(ID_LEGEND_PROPS, bmp,
99              shortHelpString=_("Edit Layer Properties"))              shortHelpString=_("Edit Layer Properties"))
100    
101          self.toolBar.Realize()          self.toolBar.Realize()
102          panelBox.Add(self.toolBar, 0, wxGROW, 0)          panelBox.Add(self.toolBar, 0, wx.GROW, 0)
103    
104          EVT_TOOL(self, ID_LEGEND_TOP, self._OnMoveTop)          self.Bind(wx.EVT_TOOL, self._OnMoveTop, id=ID_LEGEND_TOP)
105          EVT_TOOL(self, ID_LEGEND_RAISE, self._OnMoveUp)          self.Bind(wx.EVT_TOOL, self._OnMoveUp, id=ID_LEGEND_RAISE)
106          EVT_TOOL(self, ID_LEGEND_LOWER, self._OnMoveDown)          self.Bind(wx.EVT_TOOL, self._OnMoveDown, id=ID_LEGEND_LOWER)
107          EVT_TOOL(self, ID_LEGEND_BOTTOM, self._OnMoveBottom)          self.Bind(wx.EVT_TOOL, self._OnMoveBottom, id=ID_LEGEND_BOTTOM)
108          EVT_TOOL(self, ID_LEGEND_PROPS, self._OnProperties)          self.Bind(wx.EVT_TOOL, self._OnProperties, id=ID_LEGEND_PROPS)
109          EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)          self.Bind(wx.EVT_TOOL, self._OnShowLayer, id=ID_LEGEND_SHOWLAYER)
110          EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)          self.Bind(wx.EVT_TOOL, self._OnHideLayer, id=ID_LEGEND_HIDELAYER)
111    
112          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)
113    
114          panelBox.Add(self.tree, 1, wxGROW, 0)          panelBox.Add(self.tree, 1, wx.GROW, 0)
115    
116          self.scalebarbitmap = ScaleBarBitmap(self, map, mainWindow)          self.scalebarbitmap = ScaleBarBitmap(self, map, mainWindow)
117          panelBox.Add(self.scalebarbitmap, 0, wxGROW, 0)          panelBox.Add(self.scalebarbitmap, 0, wx.GROW, 0)
118    
119          self.SetAutoLayout(True)          self.SetAutoLayout(True)
120          self.SetSizer(panelBox)          self.SetSizer(panelBox)
# Line 123  class LegendPanel(DockPanel): Line 127  class LegendPanel(DockPanel):
127    
128          self.Create()          self.Create()
129    
130          EVT_CLOSE(self, self._OnClose)          self.Bind(wx.EVT_CLOSE, self._OnClose)
131    
132    
133      def GetMap(self):      def GetMap(self):
# Line 155  class LegendPanel(DockPanel): Line 159  class LegendPanel(DockPanel):
159    
160      def _OnMoveTop(self, event):      def _OnMoveTop(self, event):
161          self.tree.MoveCurrentItemTop()          self.tree.MoveCurrentItemTop()
162            
163      def _OnMoveUp(self, event):      def _OnMoveUp(self, event):
164          self.tree.MoveCurrentItemUp()          self.tree.MoveCurrentItemUp()
165    
166      def _OnMoveDown(self, event):      def _OnMoveDown(self, event):
# Line 171  class LegendPanel(DockPanel): Line 175  class LegendPanel(DockPanel):
175    
176      #def Close(self, force = False):      #def Close(self, force = False):
177          #DockPanel.Close(self, force)          #DockPanel.Close(self, force)
178            
179      def _OnClose(self, event):      def _OnClose(self, event):
180          self.__Close()          self.__Close()
181    
# Line 179  class LegendPanel(DockPanel): Line 183  class LegendPanel(DockPanel):
183          self.tree.DoOnHideLayer()          self.tree.DoOnHideLayer()
184          pass          pass
185    
186        def _OnToggleVisibility(self, event):
187            self.tree.ToggleVisibility()
188    
189        def _OnProjection(self, event):
190            self.tree.LayerProjection()
191    
192        def _OnRemoveLayer(self, event):
193            self.mainWindow.RemoveLayer()
194    
195        def _OnShowTable(self, event):
196            self.mainWindow.LayerShowTable()
197    
198      def __EnableButtons(self, on):      def __EnableButtons(self, on):
199          self.toolBar.EnableTool(ID_LEGEND_TOP, on)          self.toolBar.EnableTool(ID_LEGEND_TOP, on)
200          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
# Line 191  class LegendPanel(DockPanel): Line 207  class LegendPanel(DockPanel):
207      def __Close(self):      def __Close(self):
208          self.tree.Close()          self.tree.Close()
209    
210  class LegendTree(wxTreeCtrl):  class LegendTree(wx.TreeCtrl):
211    
212      def __init__(self, parent, id, map, mainWindow):      def __init__(self, parent, id, map, mainWindow):
213          wxTreeCtrl.__init__(self, parent, id,          wx.TreeCtrl.__init__(self, parent, id,
214                              style = wxTR_DEFAULT_STYLE | wxTR_HIDE_ROOT,                              style = wx.TR_DEFAULT_STYLE | wx.TR_HIDE_ROOT,
215                              size = (200, 200))                              size = (200, 200))
216    
217          self.mainWindow = mainWindow          self.mainWindow = mainWindow
# Line 220  class LegendTree(wxTreeCtrl): Line 236  class LegendTree(wxTreeCtrl):
236    
237          self.previewer = ClassDataPreviewer()          self.previewer = ClassDataPreviewer()
238    
239          EVT_TREE_ITEM_ACTIVATED(self, ID_LEGEND_TREE, self._OnItemActivated)          self.preventExpandCollapse = False
240          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)          self.raiseProperties = False
241    
242          EVT_CLOSE(self, self._OnClose)          self.Bind(wx.EVT_TREE_ITEM_ACTIVATED, self._OnItemActivated, id=ID_LEGEND_TREE)
243            self.Bind(wx.EVT_TREE_SEL_CHANGED, self._OnSelChanged, id=ID_LEGEND_TREE)
244            self.Bind(wx.EVT_TREE_ITEM_EXPANDING, self.OnItemExpandCollapse, id=ID_LEGEND_TREE)
245            self.Bind(wx.EVT_TREE_ITEM_COLLAPSING, self.OnItemExpandCollapse, id=ID_LEGEND_TREE)
246            self.Bind(wx.EVT_TREE_ITEM_RIGHT_CLICK, self._OnRightClick, id=ID_LEGEND_TREE)
247    
248            self.Bind(wx.EVT_CLOSE, self._OnClose)
249    
250          self.SetMap(map)          self.SetMap(map)
251    
252        def _OnRightClick(self, event):
253            """Select item and pop up a context menu"""
254    
255            # The pop up menu is related to the legend tree, so we have direct
256            # access on the tree items. The events issued by the menu are handled
257            # by the legend panel, since most of the handlers are already
258            # implemented there.
259    
260            # Update item selection to the right click
261            item = event.GetItem()
262            self.SelectItem(item)
263    
264            # Define the menu
265            popup_menu = Menu("PopUp", "",
266                              [ "layer_visibility",
267                                None,
268                                "layer_properties",
269                                "layer_projection",
270                                "layer_remove",
271                                "layer_show_table",
272                                None,
273                                "layer_to_top",
274                                "layer_raise",
275                                "layer_lower",
276                                "layer_to_bottom"
277                                ])
278    
279            # Display the menu
280            pos = event.GetPoint()
281            shift = self.ClientToScreen((0,0))
282            self.PopupMenu(self.mainWindow.build_menu(popup_menu), pos)
283    
284      def find_layer(self, layer):      def find_layer(self, layer):
285          """Return the tree item for the layer"""          """Return the tree item for the layer"""
286          root = self.GetRootItem()          root = self.GetRootItem()
287          id, cookie = self.GetFirstChild(root, 0)          id, cookie = self.GetFirstChild(root)
288          while id.IsOk():          while id.IsOk():
289              if self.GetPyData(id) is layer:              if self.GetPyData(id) is layer:
290                  return id                  return id
# Line 259  class LegendTree(wxTreeCtrl): Line 313  class LegendTree(wxTreeCtrl):
313              #except ConnectorError:              #except ConnectorError:
314                  #pass                  #pass
315              self.DeleteAllItems()              self.DeleteAllItems()
316            
317          self.map = map          self.map = map
318    
319          if self.map is not None:          if self.map is not None:
# Line 315  class LegendTree(wxTreeCtrl): Line 369  class LegendTree(wxTreeCtrl):
369              layers = self.map.Layers()              layers = self.map.Layers()
370              return layers.index(data2) - layers.index(data1)              return layers.index(data2) - layers.index(data1)
371          else:          else:
372              return wxTreeCtrl.OnCompareItems(self, item1, item2)              return wx.TreeCtrl.OnCompareItems(self, item1, item2)
373    
374      def DoOnShowLayer(self):      def DoOnShowLayer(self):
375          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
# Line 325  class LegendTree(wxTreeCtrl): Line 379  class LegendTree(wxTreeCtrl):
379          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
380          layer.SetVisible(False)          layer.SetVisible(False)
381    
382        def ToggleVisibility(self):
383            layer, group = self.GetSelectedHierarchy()
384    
385            layer.SetVisible(not layer.Visible())
386    
387        def LayerProjection(self):
388            self.parent.mainWindow.LayerProjection()
389    
390      def Sort(self):      def Sort(self):
391          self.SortChildren(self.GetRootItem())          self.SortChildren(self.GetRootItem())
392    
# Line 348  class LegendTree(wxTreeCtrl): Line 410  class LegendTree(wxTreeCtrl):
410      def _OnMsgMapsChanged(self):      def _OnMsgMapsChanged(self):
411          #print self.map is self.mainWindow.Map()          #print self.map is self.mainWindow.Map()
412          self.SetMap(self.mainWindow.Map())          self.SetMap(self.mainWindow.Map())
413            
414      def _OnSelChanged(self, event):      def _OnSelChanged(self, event):
415          # If we change the selection from normalize_selection do nothing.          # If we change the selection from normalize_selection do nothing.
416          if self.changing_selection:          if self.changing_selection:
# Line 381  class LegendTree(wxTreeCtrl): Line 443  class LegendTree(wxTreeCtrl):
443              self.changing_selection = 0              self.changing_selection = 0
444    
445    
446        def OnItemExpandCollapse(self, event):
447            if self.preventExpandCollapse:
448                event.Veto()
449                self.preventExpandCollapse = False
450    
451      def _OnItemActivated(self, event):      def _OnItemActivated(self, event):
452          self.parent.DoOnProperties()          # The following looks strange but is need under Windows to
453            # raise the Properties on double-click: The tree control
454            # always gets an Expanded / Collapsed event after the ItemActivated
455            # on double click, which raises the main window again. We add a second
456            # ItemActivated event to the queue, which simply raises the already
457            # displayed window.
458            if self.raiseProperties:
459                self.parent.DoOnProperties()
460                self.raiseProperties = False
461            else:
462                self.raiseProperties = True
463                self.preventExpandCollapse = True
464                self.parent.DoOnProperties()
465                self.AddPendingEvent(event)
466    
467      def _OnMsgLayerChanged(self, layer):      def _OnMsgLayerChanged(self, layer):
468          assert isinstance(layer, BaseLayer)          assert isinstance(layer, BaseLayer)
# Line 407  class LegendTree(wxTreeCtrl): Line 487  class LegendTree(wxTreeCtrl):
487          # Build a dict with all layers known by the the tree as keys          # Build a dict with all layers known by the the tree as keys
488          layers = {}          layers = {}
489          root = self.GetRootItem()          root = self.GetRootItem()
490          id, cookie = self.GetFirstChild(root, 0)          id, cookie = self.GetFirstChild(root)
491          while id.IsOk():          while id.IsOk():
492              layers[self.GetPyData(id)] = 1              layers[self.GetPyData(id)] = 1
493              id, cookie = self.GetNextChild(root, cookie)              id, cookie = self.GetNextChild(root, cookie)
# Line 426  class LegendTree(wxTreeCtrl): Line 506  class LegendTree(wxTreeCtrl):
506          layers = map.Layers()          layers = map.Layers()
507    
508          root = self.GetRootItem()          root = self.GetRootItem()
509          id, cookie = self.GetFirstChild(root, 0)          id, cookie = self.GetFirstChild(root)
510          while id.IsOk():          while id.IsOk():
511              if self.GetPyData(id) not in layers:              if self.GetPyData(id) not in layers:
512                  self.__RemoveLayer(id)                  self.__RemoveLayer(id)
# Line 451  class LegendTree(wxTreeCtrl): Line 531  class LegendTree(wxTreeCtrl):
531      def __UpdateSelection(self):      def __UpdateSelection(self):
532          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
533          self.parent.DoOnSelChanged(layer, group)          self.parent.DoOnSelChanged(layer, group)
534            
535      def __FillTree(self, map):      def __FillTree(self, map):
536    
537          self.Freeze()          self.Freeze()
# Line 466  class LegendTree(wxTreeCtrl): Line 546  class LegendTree(wxTreeCtrl):
546          self.Thaw()          self.Thaw()
547    
548      def __FillTreeLayer(self, pid):      def __FillTreeLayer(self, pid):
549    
550          layer = self.GetPyData(pid)          layer = self.GetPyData(pid)
551    
552          self.Freeze()          self.Freeze()
# Line 488  class LegendTree(wxTreeCtrl): Line 569  class LegendTree(wxTreeCtrl):
569                      bmp = self.__BuildGroupImage(g, shapeType)                      bmp = self.__BuildGroupImage(g, shapeType)
570    
571                      if bmp is None:                      if bmp is None:
572                          self.SetItemImage(id, -1)                          self.SetItemImage(id, -1, wx.TreeItemIcon_Normal)
573                          self.SetItemSelectedImage(id, -1)                          self.SetItemImage(id, -1, wx.TreeItemIcon_Selected)
574                            #self.SetItemSelectedImage(id, -1)
575                      else:                      else:
576                          if self.availImgListIndices:                          if self.availImgListIndices:
577                              i = self.availImgListIndices.pop(0)                              i = self.availImgListIndices.pop(0)
# Line 497  class LegendTree(wxTreeCtrl): Line 579  class LegendTree(wxTreeCtrl):
579                          else:                          else:
580                              i = self.image_list.Add(bmp)                              i = self.image_list.Add(bmp)
581    
582                          self.SetItemImage(id, i)                          self.SetItemImage(id, i, wx.TreeItemIcon_Normal)
583                          self.SetItemSelectedImage(id, i)                          self.SetItemImage(id, i, wx.TreeItemIcon_Selected)
584                            #self.SetItemlectedImage(id, i)
585    
586          self.Thaw()          self.Thaw()
587    
588      def __BuildGroupImage(self, group, shapeType):      def __BuildGroupImage(self, group, shapeType):
589    
590          bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)          bmp = wx.EmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
591          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)          #brush = wxBrush(Color2wxColour(item[1]), wxSOLID)
592          dc = wxMemoryDC()          dc = wx.MemoryDC()
593          dc.SelectObject(bmp)          dc.SelectObject(bmp)
594          dc.Clear()          dc.Clear()
595    
# Line 518  class LegendTree(wxTreeCtrl): Line 601  class LegendTree(wxTreeCtrl):
601    
602          pid = self.GetRootItem()          pid = self.GetRootItem()
603    
604          id, cookie = self.GetFirstChild(pid, 123)          id, cookie = self.GetFirstChild(pid)
605          while id.IsOk():          while id.IsOk():
606              self.__RemoveLayer(id)              self.__RemoveLayer(id)
607              id, cookie = self.GetNextChild(pid, cookie)              id, cookie = self.GetNextChild(pid, cookie)
608    
609          wxTreeCtrl.DeleteAllItems(self)          wx.TreeCtrl.DeleteAllItems(self)
610    
611      def __AddLayer(self, before, l):      def __AddLayer(self, before, l):
612          root = self.GetRootItem()          root = self.GetRootItem()
613          id = self.InsertItemBefore(root, before,          id = self.InsertItemBefore(root, before,
614                              l.Title(),                              l.Title(),
615                              self.mapImageIndex,                              self.mapImageIndex,
616                              self.mapImageIndex)                              self.mapImageIndex)
617    
# Line 539  class LegendTree(wxTreeCtrl): Line 622  class LegendTree(wxTreeCtrl):
622          self.Expand(id)          self.Expand(id)
623    
624          l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)          l.Subscribe(LAYER_CHANGED, self._OnMsgLayerChanged)
625          l.Subscribe(LAYER_VISIBILITY_CHANGED,          l.Subscribe(LAYER_VISIBILITY_CHANGED,
626                      self._OnMsgLayerVisibilityChanged)                      self._OnMsgLayerVisibilityChanged)
627          l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)          l.Subscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
628    
# Line 547  class LegendTree(wxTreeCtrl): Line 630  class LegendTree(wxTreeCtrl):
630          self.DeleteChildren(id)          self.DeleteChildren(id)
631    
632          layer = self.GetPyData(id)          layer = self.GetPyData(id)
633          layer.Unsubscribe(LAYER_CHANGED,          layer.Unsubscribe(LAYER_CHANGED,
634                            self._OnMsgLayerChanged)                            self._OnMsgLayerChanged)
635          layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,          layer.Unsubscribe(LAYER_VISIBILITY_CHANGED,
636                            self._OnMsgLayerVisibilityChanged)                            self._OnMsgLayerVisibilityChanged)
637          layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)          layer.Unsubscribe(TITLE_CHANGED, self._OnMsgLayerTitleChanged)
638    
639          self.Delete(id)          self.Delete(id)
640    
641      def DeleteChildren(self, pid):      def DeleteChildren(self, pid):
642          id, cookie = self.GetFirstChild(pid, 123)          id, cookie = self.GetFirstChild(pid)
643          while id.IsOk():          while id.IsOk():
644              self.availImgListIndices.append(self.GetItemImage(id))              self.availImgListIndices.append(self.GetItemImage(id))
645              id, cookie = self.GetNextChild(pid, cookie)              id, cookie = self.GetNextChild(pid, cookie)
646          wxTreeCtrl.DeleteChildren(self, pid)          wx.TreeCtrl.DeleteChildren(self, pid)
647    
648      def GetRootItem(self):      def GetRootItem(self):
649          root = wxTreeCtrl.GetRootItem(self)          root = wx.TreeCtrl.GetRootItem(self)
650    
651          if not root.IsOk():          if not root.IsOk():
652              self.image_list = wxImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)              self.image_list = wx.ImageList(BMP_SIZE_W, BMP_SIZE_H, False, 0)
653    
654              bmp = wxEmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)              bmp = wx.EmptyBitmap(BMP_SIZE_W, BMP_SIZE_H)
655              dc = wxMemoryDC()              dc = wx.MemoryDC()
656              dc.SelectObject(bmp)              dc.SelectObject(bmp)
657              dc.SetBrush(wxBLACK_BRUSH)              dc.SetBrush(wx.BLACK_BRUSH)
658              dc.Clear()              dc.Clear()
659              dc.SelectObject(wxNullBitmap)              dc.SelectObject(wx.NullBitmap)
660    
661              self.emptyImageIndex = \              self.emptyImageIndex = \
662                  self.image_list.AddWithColourMask(bmp, wxColour(0, 0, 0))                  self.image_list.AddWithColourMask(bmp, wx.Colour(0, 0, 0))
663    
664              bmp = resource.GetBitmapResource("legend_icon_layer",              bmp = resource.GetBitmapResource("legend_icon_layer",
665                                                wxBITMAP_TYPE_XPM)                                                wx.BITMAP_TYPE_XPM)
666              self.mapImageIndex = \              self.mapImageIndex = \
667                  self.image_list.Add(bmp)                  self.image_list.Add(bmp)
668    
# Line 594  class LegendTree(wxTreeCtrl): Line 677  class LegendTree(wxTreeCtrl):
677          font = self.GetItemFont(id)          font = self.GetItemFont(id)
678    
679          if visible:          if visible:
680              font.SetStyle(wxNORMAL)              font.SetStyle(wx.NORMAL)
681              color = wxBLACK              color = wx.BLACK
682          else:          else:
683              #font.SetStyle(wxITALIC)              #font.SetStyle(wxITALIC)
684              font.SetStyle(wxNORMAL)              font.SetStyle(wx.NORMAL)
685              color = wxLIGHT_GREY              color = wx.LIGHT_GREY
686    
687          self.SetItemTextColour(id, color)          self.SetItemTextColour(id, color)
688          self.SetItemFont(id, font)          self.SetItemFont(id, font)
689            
690      def __ShowHideLayer(self, layer):      def __ShowHideLayer(self, layer):
691          parent = self.find_layer(layer)          parent = self.find_layer(layer)
692          assert parent.IsOk()          assert parent.IsOk()
# Line 612  class LegendTree(wxTreeCtrl): Line 695  class LegendTree(wxTreeCtrl):
695    
696          self.__SetVisibilityStyle(visible, parent)          self.__SetVisibilityStyle(visible, parent)
697    
698          id, cookie = self.GetFirstChild(parent, 123)          id, cookie = self.GetFirstChild(parent)
699    
700          while id.IsOk():          while id.IsOk():
701              self.__SetVisibilityStyle(visible, id)              self.__SetVisibilityStyle(visible, id)
702              id, cookie = self.GetNextChild(parent, cookie)              id, cookie = self.GetNextChild(parent, cookie)
703                
704  class ScaleBarBitmap(wxBoxSizer):      # In wxPython 2.4 the GetFirstChild method has to be called with a
705        # second argument and in 2.5 it must not.  Reading the code of
706        # wxPython 2.4 it seems that the second parameter was intended to be
707        # optional there but due to a bug in the C++ code it doesn't work
708        # and omitting the second argument leads to a segfault.  To cope
709        # with this and to make the code usable with both 2.5 and 2.4 we
710        # overwrite the inherited method when running with 2.4 to provide a
711        # default value for the second argument.
712        if map(int, wx.__version__.split(".")[:2]) < [2, 5]:
713            def GetFirstChild(self, item):
714                return wx.TreeCtrl.GetFirstChild(self, item, 0)
715    
716    
717    class ScaleBarBitmap(wx.BoxSizer):
718    
719      def __init__(self, parent, map, mainWindow):      def __init__(self, parent, map, mainWindow):
720          # While the width is fixed, get the height _now_.          # While the width is fixed, get the height _now_.
721          dc = wxMemoryDC()          dc = wx.MemoryDC()
722          textwidth, textheight = dc.GetTextExtent("%d"%0)          textwidth, textheight = dc.GetTextExtent("%d"%0)
723          self.width = 210          self.width = 210
724          self.height = textheight + 3*2 + 8          self.height = textheight + 3*2 + 8
725    
726          wxBoxSizer.__init__(self, wxVERTICAL)          wx.BoxSizer.__init__(self, wx.VERTICAL)
727          bmp=wxEmptyBitmap(self.width, self.height)          bmp=wx.EmptyBitmap(self.width, self.height)
728          self.scalebarBitmap = wxStaticBitmap(parent, -1, bmp)          self.scalebarBitmap = wx.StaticBitmap(parent, -1, bmp)
729          self.Add(self.scalebarBitmap, 0, wxALIGN_CENTER|wxLEFT|wxTOP|wxRIGHT, 1)          self.Add(self.scalebarBitmap, 0, wx.ALIGN_CENTER|wx.LEFT|wx.TOP|wx.RIGHT, 1)
730    
731          self.mainWindow = mainWindow          self.mainWindow = mainWindow
732          self.parent = parent          self.parent = parent
# Line 642  class ScaleBarBitmap(wxBoxSizer): Line 738  class ScaleBarBitmap(wxBoxSizer):
738    
739          if self.canvas is not None:          if self.canvas is not None:
740              for msg, func in sub_list: self.canvas.Unsubscribe(msg, func)              for msg, func in sub_list: self.canvas.Unsubscribe(msg, func)
741            
742          self.canvas = canvas          self.canvas = canvas
743          self.scalebar = ScaleBar(canvas.map)          self.scalebar = ScaleBar(canvas.map)
744    
# Line 654  class ScaleBarBitmap(wxBoxSizer): Line 750  class ScaleBarBitmap(wxBoxSizer):
750          self.__SetScale(scale)          self.__SetScale(scale)
751    
752      def __SetScale(self, scale):      def __SetScale(self, scale):
753          bmp = wxEmptyBitmap(self.width, self.height)          bmp = wx.EmptyBitmap(self.width, self.height)
754          dc = wxMemoryDC()          dc = wx.MemoryDC()
755          dc.SelectObject(bmp)          dc.SelectObject(bmp)
756          dc.Clear()          dc.Clear()
757    
758          if self.canvas.map.projection is not None:          if self.canvas.map is not None \
759                and self.canvas.map.projection is not None:
760    
761                # if we are using a projection with geographics coordinates
762                # we need to change the scale value based on where we are
763                # on the globe.
764                if self.canvas.map.projection.GetProjectedUnits() \
765                    == PROJ_UNITS_DEGREES:
766    
767                    width, height = self.canvas.GetSizeTuple()
768                    long, lat = self.canvas.win_to_proj(width/2, height/2)
769    
770                    # slightly inaccurate, but if we are looking at
771                    # the north/south pole we could end up dividing by zero
772                    #
773                    # it shouldn't matter for our purposes that we ignore
774                    # the original sign of lat.
775                    if fabs(lat) > 89.9: lat = 89.9
776    
777                    #
778                    # one degree is about 111,133m at the equator
779                    # we need to adjust that for latitude as
780                    # we move north/south. use the center of the map
781                    # as the point to scale the length to.
782                    #
783                    scale = scale / (111133.0 * fabs(cos(lat * pi/180)))
784    
785              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())
786    
787          self.scalebarBitmap.SetBitmap(bmp)          self.scalebarBitmap.SetBitmap(bmp)
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