/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/legend.py
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revision 1241 by frank, Thu Jun 19 09:25:53 2003 UTC revision 1837 by frank, Tue Oct 21 09:29:52 2003 UTC
# 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
# Line 17  from wxPython.wx import * Line 19  from wxPython.wx import *
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 39  ID_LEGEND_PROPS = 4006 Line 42  ID_LEGEND_PROPS = 4006
42  ID_LEGEND_SHOWLAYER = 4007  ID_LEGEND_SHOWLAYER = 4007
43  ID_LEGEND_HIDELAYER = 4008  ID_LEGEND_HIDELAYER = 4008
44    
45    ID_POPUP_TOP = 4501
46    ID_POPUP_UP  = 4502
47    ID_POPUP_DOWN = 4503
48    ID_POPUP_BOTTOM = 4504
49    ID_POPUP_PROPS  = 4506
50    ID_POPUP_VISIBLE = 4507
51    ID_POPUP_PROJ = 4509
52    
53  BMP_SIZE_W = 15  BMP_SIZE_W = 15
54  BMP_SIZE_H = 15  BMP_SIZE_H = 15
55    
# Line 105  class LegendPanel(DockPanel): Line 116  class LegendPanel(DockPanel):
116          EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)          EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
117          EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)          EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)
118    
119            EVT_MENU(self, ID_POPUP_PROPS, self._OnProperties)
120            EVT_MENU(self, ID_POPUP_TOP, self._OnMoveTop)
121            EVT_MENU(self, ID_POPUP_UP, self._OnMoveUp)
122            EVT_MENU(self, ID_POPUP_DOWN, self._OnMoveDown)
123            EVT_MENU(self, ID_POPUP_BOTTOM, self._OnMoveBottom)
124            EVT_MENU(self, ID_POPUP_VISIBLE, self._OnToggleVisibility)
125            EVT_MENU(self, ID_POPUP_PROJ, self._OnProjection)
126            
127          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)
128    
129          panelBox.Add(self.tree, 1, wxGROW, 0)          panelBox.Add(self.tree, 1, wxGROW, 0)
# Line 179  class LegendPanel(DockPanel): Line 198  class LegendPanel(DockPanel):
198          self.tree.DoOnHideLayer()          self.tree.DoOnHideLayer()
199          pass          pass
200    
201        def _OnToggleVisibility(self, event):
202            self.tree.ToggleVisibility()
203    
204        def _OnProjection(self, event):
205            self.tree.LayerProjection()
206    
207      def __EnableButtons(self, on):      def __EnableButtons(self, on):
208          self.toolBar.EnableTool(ID_LEGEND_TOP, on)          self.toolBar.EnableTool(ID_LEGEND_TOP, on)
209          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
# Line 227  class LegendTree(wxTreeCtrl): Line 252  class LegendTree(wxTreeCtrl):
252          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
253          EVT_TREE_ITEM_EXPANDING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)          EVT_TREE_ITEM_EXPANDING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)
254          EVT_TREE_ITEM_COLLAPSING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)          EVT_TREE_ITEM_COLLAPSING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)
255            EVT_TREE_ITEM_RIGHT_CLICK(self, ID_LEGEND_TREE, self._OnRightClick)
256    
257          EVT_CLOSE(self, self._OnClose)          EVT_CLOSE(self, self._OnClose)
258    
# Line 330  class LegendTree(wxTreeCtrl): Line 356  class LegendTree(wxTreeCtrl):
356          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
357          layer.SetVisible(False)          layer.SetVisible(False)
358    
359        def ToggleVisibility(self):
360            layer, group = self.GetSelectedHierarchy()
361    
362            layer.SetVisible(not layer.Visible())
363    
364        def LayerProjection(self):
365            self.parent.mainWindow.LayerProjection()
366    
367      def Sort(self):      def Sort(self):
368          self.SortChildren(self.GetRootItem())          self.SortChildren(self.GetRootItem())
369    
# Line 391  class LegendTree(wxTreeCtrl): Line 425  class LegendTree(wxTreeCtrl):
425              event.Veto()              event.Veto()
426              self.preventExpandCollapse = False              self.preventExpandCollapse = False
427    
428        def _OnRightClick(self, event):
429            """Select item and pop up a context menu"""
430    
431            # The pop up menu is related to the legend tree, so we have direct
432            # access on the tree items. The events issued by the menu are handled
433            # by the legend panel, since most of the handlers are already
434            # implemented there.
435    
436            # Update item selection to the right click
437            item = event.GetItem()
438            self.SelectItem(item)
439    
440            # Create the menu
441            menu = wxMenu("", 0)
442    
443            # The "Visible" item is a special ...
444            menuitem = wxMenuItem(menu, ID_POPUP_VISIBLE, _("Visible"),
445                                    "", wxITEM_CHECK)
446            menu.AppendItem(menuitem)
447            layer, group = self.GetSelectedHierarchy()
448            menuitem.Check(layer.Visible())
449    
450            menu.AppendSeparator()
451            menu.Append(ID_POPUP_PROPS, _("Properties"))
452            menu.Append(ID_POPUP_PROJ, _("Projection"))
453            menu.AppendSeparator()
454            menu.Append(ID_POPUP_TOP, _("Top"))
455            menu.Append(ID_POPUP_UP, _("Up"))
456            menu.Append(ID_POPUP_DOWN, _("Down"))
457            menu.Append(ID_POPUP_BOTTOM, _("Bottom"))
458    
459            # Display the menu
460            pos = event.GetPoint()
461            shift = self.ClientToScreen((0,0))
462            self.PopupMenu(menu, pos)
463    
464      def _OnItemActivated(self, event):      def _OnItemActivated(self, event):
465          # The following looks strange but is need under Windows to          # The following looks strange but is need under Windows to
466          # raise the Properties on double-click: The tree control          # raise the Properties on double-click: The tree control
# Line 684  class ScaleBarBitmap(wxBoxSizer): Line 754  class ScaleBarBitmap(wxBoxSizer):
754    
755          if self.canvas.map is not None \          if self.canvas.map is not None \
756              and self.canvas.map.projection is not None:              and self.canvas.map.projection is not None:
757    
758                # if we are using a projection with geographics coordinates
759                # we need to change the scale value based on where we are
760                # on the globe.
761                if self.canvas.map.projection.GetProjectedUnits() \
762                    == PROJ_UNITS_DEGREES:
763    
764                    width, height = self.canvas.GetSizeTuple()
765                    long, lat = self.canvas.win_to_proj(width/2, height/2)
766    
767                    # slightly inaccurate, but if we are looking at
768                    # the north/south pole we could end up dividing by zero
769                    #
770                    # it shouldn't matter for our purposes that we ignore
771                    # the original sign of lat.
772                    if fabs(lat) > 89.9: lat = 89.9
773    
774                    #
775                    # one degree is about 111,133m at the equator
776                    # we need to adjust that for latitude as
777                    # we move north/south. use the center of the map
778                    # as the point to scale the length to.
779                    #
780                    scale = scale / (111133.0 * fabs(cos(lat * pi/180)))
781    
782              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())
783    
784          self.scalebarBitmap.SetBitmap(bmp)          self.scalebarBitmap.SetBitmap(bmp)
Legend:
Removed from v.1241  
changed lines
  Added in v.1837
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