/[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 2588 by bh, Tue Mar 29 18:05:01 2005 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 *  from wxPython.wx import *
18    import wxPython
19    
20  from Thuban.Model.layer import BaseLayer  from Thuban.Model.layer import BaseLayer
21  from Thuban.Model.map import Map  from Thuban.Model.map import Map
22  from Thuban.Model.classification import ClassGroup  from Thuban.Model.classification import ClassGroup
23    from Thuban.Model.proj import PROJ_UNITS_DEGREES
24    
25  from Thuban.Model.messages import \  from Thuban.Model.messages import \
26      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 32  from Thuban.UI.classifier import ClassDa
32  from Thuban.UI.dock import DockPanel  from Thuban.UI.dock import DockPanel
33  from Thuban.UI.scalebar import ScaleBar  from Thuban.UI.scalebar import ScaleBar
34    
35    from Thuban.UI.menu import Menu
36    
37  from Thuban.Lib.connector import ConnectorError  from Thuban.Lib.connector import ConnectorError
38    
39  ID_LEGEND_TOP = 4001  ID_LEGEND_TOP = 4001
# Line 39  ID_LEGEND_PROPS = 4006 Line 45  ID_LEGEND_PROPS = 4006
45  ID_LEGEND_SHOWLAYER = 4007  ID_LEGEND_SHOWLAYER = 4007
46  ID_LEGEND_HIDELAYER = 4008  ID_LEGEND_HIDELAYER = 4008
47    
48  BMP_SIZE_W = 15  BMP_SIZE_W = 16
49  BMP_SIZE_H = 15  BMP_SIZE_H = 16
50    
51  TOP_BMP = "top_layer"  TOP_BMP = "top_layer"
52  RAISE_BMP = "raise_layer"  RAISE_BMP = "raise_layer"
# Line 50  SHOW_BMP  = "show_layer" Line 56  SHOW_BMP  = "show_layer"
56  HIDE_BMP  = "hide_layer"  HIDE_BMP  = "hide_layer"
57  PROPS_BMP = "layer_properties"  PROPS_BMP = "layer_properties"
58    
   
59  class LegendPanel(DockPanel):  class LegendPanel(DockPanel):
60    
61      def __init__(self, parent, map, mainWindow):      def __init__(self, parent, map, mainWindow):
# Line 179  class LegendPanel(DockPanel): Line 184  class LegendPanel(DockPanel):
184          self.tree.DoOnHideLayer()          self.tree.DoOnHideLayer()
185          pass          pass
186    
187        def _OnToggleVisibility(self, event):
188            self.tree.ToggleVisibility()
189    
190        def _OnProjection(self, event):
191            self.tree.LayerProjection()
192    
193        def _OnRemoveLayer(self, event):
194            self.mainWindow.RemoveLayer()
195    
196        def _OnShowTable(self, event):
197            self.mainWindow.LayerShowTable()
198    
199      def __EnableButtons(self, on):      def __EnableButtons(self, on):
200          self.toolBar.EnableTool(ID_LEGEND_TOP, on)          self.toolBar.EnableTool(ID_LEGEND_TOP, on)
201          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)          self.toolBar.EnableTool(ID_LEGEND_RAISE, on)
# Line 227  class LegendTree(wxTreeCtrl): Line 244  class LegendTree(wxTreeCtrl):
244          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)          EVT_TREE_SEL_CHANGED(self, ID_LEGEND_TREE, self._OnSelChanged)
245          EVT_TREE_ITEM_EXPANDING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)          EVT_TREE_ITEM_EXPANDING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)
246          EVT_TREE_ITEM_COLLAPSING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)          EVT_TREE_ITEM_COLLAPSING(self, ID_LEGEND_TREE, self.OnItemExpandCollapse)
247            EVT_TREE_ITEM_RIGHT_CLICK(self, ID_LEGEND_TREE, self._OnRightClick)
248    
249          EVT_CLOSE(self, self._OnClose)          EVT_CLOSE(self, self._OnClose)
250    
251          self.SetMap(map)          self.SetMap(map)
252    
253        def _OnRightClick(self, event):
254            """Select item and pop up a context menu"""
255    
256            # The pop up menu is related to the legend tree, so we have direct
257            # access on the tree items. The events issued by the menu are handled
258            # by the legend panel, since most of the handlers are already
259            # implemented there.
260    
261            # Update item selection to the right click
262            item = event.GetItem()
263            self.SelectItem(item)
264    
265            # Define the menu
266            popup_menu = Menu("PopUp", "",
267                              [ "layer_visibility",
268                                None,
269                                "layer_properties",
270                                "layer_projection",
271                                "layer_remove",
272                                "layer_show_table",
273                                None,
274                                "layer_to_top",
275                                "layer_raise",
276                                "layer_lower",
277                                "layer_to_bottom"
278                                ])
279    
280            # Display the menu
281            pos = event.GetPoint()
282            shift = self.ClientToScreen((0,0))
283            self.PopupMenu(self.mainWindow.build_menu(popup_menu), pos)
284    
285      def find_layer(self, layer):      def find_layer(self, layer):
286          """Return the tree item for the layer"""          """Return the tree item for the layer"""
287          root = self.GetRootItem()          root = self.GetRootItem()
288          id, cookie = self.GetFirstChild(root, 0)          id, cookie = self.GetFirstChild(root)
289          while id.IsOk():          while id.IsOk():
290              if self.GetPyData(id) is layer:              if self.GetPyData(id) is layer:
291                  return id                  return id
# Line 330  class LegendTree(wxTreeCtrl): Line 380  class LegendTree(wxTreeCtrl):
380          layer, group = self.GetSelectedHierarchy()          layer, group = self.GetSelectedHierarchy()
381          layer.SetVisible(False)          layer.SetVisible(False)
382    
383        def ToggleVisibility(self):
384            layer, group = self.GetSelectedHierarchy()
385    
386            layer.SetVisible(not layer.Visible())
387    
388        def LayerProjection(self):
389            self.parent.mainWindow.LayerProjection()
390    
391      def Sort(self):      def Sort(self):
392          self.SortChildren(self.GetRootItem())          self.SortChildren(self.GetRootItem())
393    
# Line 430  class LegendTree(wxTreeCtrl): Line 488  class LegendTree(wxTreeCtrl):
488          # 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
489          layers = {}          layers = {}
490          root = self.GetRootItem()          root = self.GetRootItem()
491          id, cookie = self.GetFirstChild(root, 0)          id, cookie = self.GetFirstChild(root)
492          while id.IsOk():          while id.IsOk():
493              layers[self.GetPyData(id)] = 1              layers[self.GetPyData(id)] = 1
494              id, cookie = self.GetNextChild(root, cookie)              id, cookie = self.GetNextChild(root, cookie)
# Line 449  class LegendTree(wxTreeCtrl): Line 507  class LegendTree(wxTreeCtrl):
507          layers = map.Layers()          layers = map.Layers()
508    
509          root = self.GetRootItem()          root = self.GetRootItem()
510          id, cookie = self.GetFirstChild(root, 0)          id, cookie = self.GetFirstChild(root)
511          while id.IsOk():          while id.IsOk():
512              if self.GetPyData(id) not in layers:              if self.GetPyData(id) not in layers:
513                  self.__RemoveLayer(id)                  self.__RemoveLayer(id)
# Line 489  class LegendTree(wxTreeCtrl): Line 547  class LegendTree(wxTreeCtrl):
547          self.Thaw()          self.Thaw()
548    
549      def __FillTreeLayer(self, pid):      def __FillTreeLayer(self, pid):
550    
551          layer = self.GetPyData(pid)          layer = self.GetPyData(pid)
552    
553          self.Freeze()          self.Freeze()
# Line 511  class LegendTree(wxTreeCtrl): Line 570  class LegendTree(wxTreeCtrl):
570                      bmp = self.__BuildGroupImage(g, shapeType)                      bmp = self.__BuildGroupImage(g, shapeType)
571    
572                      if bmp is None:                      if bmp is None:
573                          self.SetItemImage(id, -1)                          self.SetItemImage(id, -1, wxTreeItemIcon_Normal)
574                          self.SetItemSelectedImage(id, -1)                          self.SetItemImage(id, -1, wxTreeItemIcon_Selected)
575                            #self.SetItemSelectedImage(id, -1)
576                      else:                      else:
577                          if self.availImgListIndices:                          if self.availImgListIndices:
578                              i = self.availImgListIndices.pop(0)                              i = self.availImgListIndices.pop(0)
# Line 520  class LegendTree(wxTreeCtrl): Line 580  class LegendTree(wxTreeCtrl):
580                          else:                          else:
581                              i = self.image_list.Add(bmp)                              i = self.image_list.Add(bmp)
582    
583                          self.SetItemImage(id, i)                          self.SetItemImage(id, i, wxTreeItemIcon_Normal)
584                          self.SetItemSelectedImage(id, i)                          self.SetItemImage(id, i, wxTreeItemIcon_Selected)
585                            #self.SetItemlectedImage(id, i)
586    
587          self.Thaw()          self.Thaw()
588    
# Line 541  class LegendTree(wxTreeCtrl): Line 602  class LegendTree(wxTreeCtrl):
602    
603          pid = self.GetRootItem()          pid = self.GetRootItem()
604    
605          id, cookie = self.GetFirstChild(pid, 123)          id, cookie = self.GetFirstChild(pid)
606          while id.IsOk():          while id.IsOk():
607              self.__RemoveLayer(id)              self.__RemoveLayer(id)
608              id, cookie = self.GetNextChild(pid, cookie)              id, cookie = self.GetNextChild(pid, cookie)
# Line 579  class LegendTree(wxTreeCtrl): Line 640  class LegendTree(wxTreeCtrl):
640          self.Delete(id)          self.Delete(id)
641    
642      def DeleteChildren(self, pid):      def DeleteChildren(self, pid):
643          id, cookie = self.GetFirstChild(pid, 123)          id, cookie = self.GetFirstChild(pid)
644          while id.IsOk():          while id.IsOk():
645              self.availImgListIndices.append(self.GetItemImage(id))              self.availImgListIndices.append(self.GetItemImage(id))
646              id, cookie = self.GetNextChild(pid, cookie)              id, cookie = self.GetNextChild(pid, cookie)
# Line 635  class LegendTree(wxTreeCtrl): Line 696  class LegendTree(wxTreeCtrl):
696    
697          self.__SetVisibilityStyle(visible, parent)          self.__SetVisibilityStyle(visible, parent)
698    
699          id, cookie = self.GetFirstChild(parent, 123)          id, cookie = self.GetFirstChild(parent)
700    
701          while id.IsOk():          while id.IsOk():
702              self.__SetVisibilityStyle(visible, id)              self.__SetVisibilityStyle(visible, id)
703              id, cookie = self.GetNextChild(parent, cookie)              id, cookie = self.GetNextChild(parent, cookie)
704                
705        # In wxPython 2.4 the GetFirstChild method has to be called with a
706        # second argument and in 2.5 it must not.  Reading the code of
707        # wxPython 2.4 it seems that the second parameter was intended to be
708        # optional there but due to a bug in the C++ code it doesn't work
709        # and omitting the second argument leads to a segfault.  To cope
710        # with this and to make the code usable with both 2.5 and 2.4 we
711        # overwrite the inherited method when running with 2.4 to provide a
712        # default value for the second argument.
713        if map(int, wxPython.__version__.split(".")[:2]) < [2, 5]:
714            def GetFirstChild(self, item):
715                return wxTreeCtrl.GetFirstChild(self, item, 0)
716    
717    
718  class ScaleBarBitmap(wxBoxSizer):  class ScaleBarBitmap(wxBoxSizer):
719    
720      def __init__(self, parent, map, mainWindow):      def __init__(self, parent, map, mainWindow):
# Line 684  class ScaleBarBitmap(wxBoxSizer): Line 758  class ScaleBarBitmap(wxBoxSizer):
758    
759          if self.canvas.map is not None \          if self.canvas.map is not None \
760              and self.canvas.map.projection is not None:              and self.canvas.map.projection is not None:
761    
762                # if we are using a projection with geographics coordinates
763                # we need to change the scale value based on where we are
764                # on the globe.
765                if self.canvas.map.projection.GetProjectedUnits() \
766                    == PROJ_UNITS_DEGREES:
767    
768                    width, height = self.canvas.GetSizeTuple()
769                    long, lat = self.canvas.win_to_proj(width/2, height/2)
770    
771                    # slightly inaccurate, but if we are looking at
772                    # the north/south pole we could end up dividing by zero
773                    #
774                    # it shouldn't matter for our purposes that we ignore
775                    # the original sign of lat.
776                    if fabs(lat) > 89.9: lat = 89.9
777    
778                    #
779                    # one degree is about 111,133m at the equator
780                    # we need to adjust that for latitude as
781                    # we move north/south. use the center of the map
782                    # as the point to scale the length to.
783                    #
784                    scale = scale / (111133.0 * fabs(cos(lat * pi/180)))
785    
786              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())              self.scalebar.DrawScaleBar(scale, dc, (0,0), dc.GetSizeTuple())
787    
788          self.scalebarBitmap.SetBitmap(bmp)          self.scalebarBitmap.SetBitmap(bmp)
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