/[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 1895 by frank, Fri Oct 31 10:13:32 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    ID_POPUP_REMOVE = 4510
53    ID_POPUP_SHOWTABLE = 4511
54    
55  BMP_SIZE_W = 15  BMP_SIZE_W = 15
56  BMP_SIZE_H = 15  BMP_SIZE_H = 15
57    
# Line 105  class LegendPanel(DockPanel): Line 118  class LegendPanel(DockPanel):
118          EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)          EVT_TOOL(self, ID_LEGEND_SHOWLAYER, self._OnShowLayer)
119          EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)          EVT_TOOL(self, ID_LEGEND_HIDELAYER, self._OnHideLayer)
120    
121            EVT_MENU(self, ID_POPUP_PROPS, self._OnProperties)
122            EVT_MENU(self, ID_POPUP_TOP, self._OnMoveTop)
123            EVT_MENU(self, ID_POPUP_UP, self._OnMoveUp)
124            EVT_MENU(self, ID_POPUP_DOWN, self._OnMoveDown)
125            EVT_MENU(self, ID_POPUP_BOTTOM, self._OnMoveBottom)
126            EVT_MENU(self, ID_POPUP_VISIBLE, self._OnToggleVisibility)
127            EVT_MENU(self, ID_POPUP_PROJ, self._OnProjection)
128            EVT_MENU(self, ID_POPUP_REMOVE, self._OnRemoveLayer)
129            EVT_MENU(self, ID_POPUP_SHOWTABLE, self._OnShowTable)
130            
131          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)          self.tree = LegendTree(self, ID_LEGEND_TREE, map, mainWindow)
132    
133          panelBox.Add(self.tree, 1, wxGROW, 0)          panelBox.Add(self.tree, 1, wxGROW, 0)
# Line 179  class LegendPanel(DockPanel): Line 202  class LegendPanel(DockPanel):
202          self.tree.DoOnHideLayer()          self.tree.DoOnHideLayer()
203          pass          pass
204    
205        def _OnToggleVisibility(self, event):
206            self.tree.ToggleVisibility()
207    
208        def _OnProjection(self, event):
209            self.tree.LayerProjection()
210    
211        def _OnRemoveLayer(self, event):
212            self.mainWindow.RemoveLayer()
213    
214        def _OnShowTable(self, event):
215            self.mainWindow.LayerShowTable()
216    
217      def __EnableButtons(self, on):      def __EnableButtons(self, on):
218          self.toolBar.EnableTool(ID_LEGEND_TOP, on)          self.toolBar.EnableTool(ID_LEGEND_TOP, on)
219          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
# Line 227  class LegendTree(wxTreeCtrl): Line 262  class LegendTree(wxTreeCtrl):
262          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
263          EVT_TREE_ITEM_EXPANDING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)          EVT_TREE_ITEM_EXPANDING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)
264          EVT_TREE_ITEM_COLLAPSING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)          EVT_TREE_ITEM_COLLAPSING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)
265            EVT_TREE_ITEM_RIGHT_CLICK(self, ID_LEGEND_TREE, self._OnRightClick)
266    
267          EVT_CLOSE(self, self._OnClose)          EVT_CLOSE(self, self._OnClose)
268    
269          self.SetMap(map)          self.SetMap(map)
270    
271        def _OnRightClick(self, event):
272            """Select item and pop up a context menu"""
273    
274            # The pop up menu is related to the legend tree, so we have direct
275            # access on the tree items. The events issued by the menu are handled
276            # by the legend panel, since most of the handlers are already
277            # implemented there.
278    
279            # Update item selection to the right click
280            item = event.GetItem()
281            self.SelectItem(item)
282    
283            # Create the menu
284            menu = wxMenu("", 0)
285    
286            # The "Visible" item is a special ...
287            menuitem = wxMenuItem(menu, ID_POPUP_VISIBLE, _("Visible"),
288                                    "", wxITEM_CHECK)
289            menu.AppendItem(menuitem)
290            layer, group = self.GetSelectedHierarchy()
291            menuitem.Check(layer.Visible())
292    
293            menu.AppendSeparator()
294            menu.Append(ID_POPUP_PROPS, _("&Properties..."))
295            menu.Append(ID_POPUP_PROJ, _("Pro&jection..."))
296            menu.Append(ID_POPUP_REMOVE, _("&Remove Layer"))
297            menu.Append(ID_POPUP_SHOWTABLE, _("Show Ta&ble"))
298            menu.AppendSeparator()
299            menu.Append(ID_POPUP_TOP, _("Top Layer"))
300            menu.Append(ID_POPUP_UP, _("Raise Layer"))
301            menu.Append(ID_POPUP_DOWN, _("Lower Layer"))
302            menu.Append(ID_POPUP_BOTTOM, _("Bottom Layer"))
303    
304            # Display the menu
305            pos = event.GetPoint()
306            shift = self.ClientToScreen((0,0))
307            self.PopupMenu(menu, pos)
308    
309      def find_layer(self, layer):      def find_layer(self, layer):
310          """Return the tree item for the layer"""          """Return the tree item for the layer"""
311          root = self.GetRootItem()          root = self.GetRootItem()
# Line 330  class LegendTree(wxTreeCtrl): Line 404  class LegendTree(wxTreeCtrl):
404          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
405          layer.SetVisible(False)          layer.SetVisible(False)
406    
407        def ToggleVisibility(self):
408            layer, group = self.GetSelectedHierarchy()
409    
410            layer.SetVisible(not layer.Visible())
411    
412        def LayerProjection(self):
413            self.parent.mainWindow.LayerProjection()
414    
415      def Sort(self):      def Sort(self):
416          self.SortChildren(self.GetRootItem())          self.SortChildren(self.GetRootItem())
417    
# Line 684  class ScaleBarBitmap(wxBoxSizer): Line 766  class ScaleBarBitmap(wxBoxSizer):
766    
767          if self.canvas.map is not None \          if self.canvas.map is not None \
768              and self.canvas.map.projection is not None:              and self.canvas.map.projection is not None:
769    
770                # if we are using a projection with geographics coordinates
771                # we need to change the scale value based on where we are
772                # on the globe.
773                if self.canvas.map.projection.GetProjectedUnits() \
774                    == PROJ_UNITS_DEGREES:
775    
776                    width, height = self.canvas.GetSizeTuple()
777                    long, lat = self.canvas.win_to_proj(width/2, height/2)
778    
779                    # slightly inaccurate, but if we are looking at
780                    # the north/south pole we could end up dividing by zero
781                    #
782                    # it shouldn't matter for our purposes that we ignore
783                    # the original sign of lat.
784                    if fabs(lat) > 89.9: lat = 89.9
785    
786                    #
787                    # one degree is about 111,133m at the equator
788                    # we need to adjust that for latitude as
789                    # we move north/south. use the center of the map
790                    # as the point to scale the length to.
791                    #
792                    scale = scale / (111133.0 * fabs(cos(lat * pi/180)))
793    
794              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())
795    
796          self.scalebarBitmap.SetBitmap(bmp)          self.scalebarBitmap.SetBitmap(bmp)
Legend:
Removed from v.1241  
changed lines
  Added in v.1895
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