/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 193 by bh, Wed May 29 10:33:41 2002 UTC revision 829 by jonathan, Tue May 6 12:06:38 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001, 2002 by Intevation GmbH  # Copyright (C) 2001, 2002, 2003 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jan-Oliver Wagner <[email protected]>  # Jan-Oliver Wagner <[email protected]>
4  # Bernhard Herzog <[email protected]>  # Bernhard Herzog <[email protected]>
# Line 12  The main window Line 12  The main window
12    
13  __version__ = "$Revision$"  __version__ = "$Revision$"
14    
15    __ThubanVersion__ = "0.2" #"$THUBAN_0_2$"
16    #__BuildDate__ = "$Date$"
17    
18  import os  import os
19    
20  from wxPython.wx import *  from wxPython.wx import *
21    
22  import Thuban  import Thuban
23    from Thuban import _
24  from Thuban.Model.session import create_empty_session  from Thuban.Model.session import create_empty_session
25  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
26  from Thuban.Model.color import Color  from Thuban.Model.color import Color
# Line 26  import view Line 30  import view
30  import tree  import tree
31  import proj4dialog  import proj4dialog
32  import tableview, identifyview  import tableview, identifyview
33    from Thuban.UI.classifier import Classifier
34    import legend
35  from menu import Menu  from menu import Menu
36    
37  import main  from context import Context
38  from command import registry, Command  from command import registry, Command, ToolCommand
39  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION
40    
41    from Thuban.UI.dock import DockFrame
42    
43    import resource
44    
45    import projdialog
46    
47    
 # the directory where the toolbar icons are stored  
 bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  
 bitmapext = ".xpm"  
48    
49    class MainWindow(DockFrame):
50    
51  class MainWindow(wxFrame):      # Some messages that can be subscribed/unsubscribed directly through
52        # the MapCanvas come in fact from other objects. This is a map to
53        # map those messages to the names of the instance variables they
54        # actually come from. This delegation is implemented in the
55        # Subscribe and unsubscribed methods
56        delegated_messages = {LAYER_SELECTED: "canvas",
57                              SHAPES_SELECTED: "canvas"}
58    
59      def __init__(self, parent, ID, interactor):      # Methods delegated to some instance variables. The delegation is
60          wxFrame.__init__(self, parent, ID, 'Thuban',      # implemented in the __getattr__ method.
61                           wxDefaultPosition, wxSize(400, 300))      delegated_methods = {"SelectLayer": "canvas",
62                             "SelectShapes": "canvas",
63                             }
64    
65          self.interactor = interactor      def __init__(self, parent, ID, title, application, interactor,
66                     initial_message = None, size = wxSize(-1, -1)):
67            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
68            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
69    
70            self.application = application
71    
72          self.CreateStatusBar()          self.CreateStatusBar()
73          self.SetStatusText("This is the wxPython-based "          if initial_message:
74                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
75    
76          self.identify_view = None          self.identify_view = None
77    
# Line 62  class MainWindow(wxFrame): Line 85  class MainWindow(wxFrame):
85          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
86          toolbar.Realize()          toolbar.Realize()
87    
88    
89          # Create the map canvas          # Create the map canvas
90          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
91          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
92            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
93          self.canvas = canvas          self.canvas = canvas
94    
95            self.SetMainWindow(self.canvas)
96    
97            self.SetAutoLayout(True)
98    
99          self.init_dialogs()          self.init_dialogs()
100    
101          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          EVT_CLOSE(self, self._OnClose)
102    
103        def Subscribe(self, channel, *args):
104            """Subscribe a function to a message channel.
105    
106            If channel is one of the delegated messages call the appropriate
107            object's Subscribe method. Otherwise do nothing.
108            """
109            if channel in self.delegated_messages:
110                object = getattr(self, self.delegated_messages[channel])
111                object.Subscribe(channel, *args)
112            else:
113                print "Trying to subscribe to unsupported channel %s" % channel
114    
115        def Unsubscribe(self, channel, *args):
116            """Unsubscribe a function from a message channel.
117    
118            If channel is one of the delegated messages call the appropriate
119            object's Unsubscribe method. Otherwise do nothing.
120            """
121            if channel in self.delegated_messages:
122                object = getattr(self, self.delegated_messages[channel])
123                object.Unsubscribe(channel, *args)
124    
125        def __getattr__(self, attr):
126            """If attr is one of the delegated methods return that method
127    
128          EVT_CLOSE(self, self.OnClose)          Otherwise raise AttributeError.
129            """
130            if attr in self.delegated_methods:
131                return getattr(getattr(self, self.delegated_methods[attr]), attr)
132            raise AttributeError(attr)
133    
134      def init_ids(self):      def init_ids(self):
135          """Initialize the ids"""          """Initialize the ids"""
# Line 111  class MainWindow(wxFrame): Line 169  class MainWindow(wxFrame):
169          return menu_bar          return menu_bar
170    
171      def build_menu(self, menudesc):      def build_menu(self, menudesc):
172          """Build and return a wxMenu from a menudescription"""          """Return a wxMenu built from the menu description menudesc"""
173          wxmenu = wxMenu()          wxmenu = wxMenu()
174          last = None          last = None
175          for item in menudesc.items:          for item in menudesc.items:
             # here the items must all be Menu instances themselves  
176              if item is None:              if item is None:
177                  # a separator. Only add one if the last item was not a                  # a separator. Only add one if the last item was not a
178                  # separator                  # separator
# Line 168  class MainWindow(wxFrame): Line 225  class MainWindow(wxFrame):
225                              command.IsCheckCommand())                              command.IsCheckCommand())
226                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
227              else:              else:
228                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
229    
230      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
231          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 183  class MainWindow(wxFrame): Line 240  class MainWindow(wxFrame):
240              command = registry.Command(name)              command = registry.Command(name)
241              if command is not None:              if command is not None:
242                  ID = self.get_id(name)                  ID = self.get_id(name)
243                  filename = os.path.join(bitmapdir, command.Icon()) + bitmapext                  bitmap = resource.GetBitmapResource(command.Icon(),
244                  bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM)                                                      wxBITMAP_TYPE_XPM)
245                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
246                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
247                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
248                  self.bind_command_events(command, ID)                  self.bind_command_events(command, ID)
249              else:              else:
250                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
251    
252        def Context(self):
253            """Return the context object for a command invoked from this window
254            """
255            return Context(self.application, self.application.Session(), self)
256    
257      def invoke_command(self, event):      def invoke_command(self, event):
258          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
259          if name is not None:          if name is not None:
260              command = registry.Command(name)              command = registry.Command(name)
261              command.Execute(self)              command.Execute(self.Context())
262          else:          else:
263              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
264    
265      def update_command_ui(self, event):      def update_command_ui(self, event):
266          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
267            context = self.Context()
268          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
269          if command is not None:          if command is not None:
270              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
271              event.SetText(command.DynText(self))              event.Enable(sensitive)
272                if command.IsTool() and not sensitive and command.Checked(context):
273                    # When a checked tool command is disabled deselect all
274                    # tools. Otherwise the tool would remain active but it
275                    # might lead to errors if the tools stays active. This
276                    # problem occurred in GREAT-ER and this fixes it, but
277                    # it's not clear to me whether this is really the best
278                    # way to do it (BH, 20021206).
279                    self.canvas.SelectTool(None)
280                event.SetText(command.DynText(context))
281              if command.IsCheckCommand():              if command.IsCheckCommand():
282                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
283    
284      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
285          """Run a modal message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
286          and return the result"""          and return the result"""
287          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
288            dlg.CenterOnParent()
289          result = dlg.ShowModal()          result = dlg.ShowModal()
290          dlg.Destroy()          dlg.Destroy()
291          return result          return result
# Line 226  class MainWindow(wxFrame): Line 299  class MainWindow(wxFrame):
299    
300      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
301          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
302              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
303          self.dialogs[name] = dialog          self.dialogs[name] = dialog
304    
305      def dialog_open(self, name):      def dialog_open(self, name):
# Line 244  class MainWindow(wxFrame): Line 317  class MainWindow(wxFrame):
317              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
318          else:          else:
319              text = ""              text = ""
320            self.set_position_text(text)
321    
322        def set_position_text(self, text):
323            """Set the statusbar text showing the current position.
324    
325            By default the text is shown in field 0 of the status bar.
326            Override this method in derived classes to put it into a
327            different field of the statusbar.
328            """
329          self.SetStatusText(text)          self.SetStatusText(text)
330    
331      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
# Line 255  class MainWindow(wxFrame): Line 337  class MainWindow(wxFrame):
337          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
338          a cancel button, otherwise not.          a cancel button, otherwise not.
339          """          """
340          if main.app.session.WasModified():          if self.application.session.WasModified():
341              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
342              if can_veto:              if can_veto:
343                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
344              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
345                                          ("The session has been modified."                                          _("The session has been modified."
346                                           " Do you want to save it?"),                                           " Do you want to save it?"),
347                                          flags)                                          flags)
348              if result == wxID_YES:              if result == wxID_YES:
# Line 269  class MainWindow(wxFrame): Line 351  class MainWindow(wxFrame):
351              result = wxID_NO              result = wxID_NO
352          return result          return result
353    
354        def prepare_new_session(self):
355            for d in self.dialogs.values():
356                if not isinstance(d, tree.SessionTreeView):
357                    d.Close()
358    
359      def NewSession(self):      def NewSession(self):
360          self.save_modified_session()          self.save_modified_session()
361          main.app.SetSession(create_empty_session())          self.prepare_new_session()
362            self.application.SetSession(create_empty_session())
363    
364      def OpenSession(self):      def OpenSession(self):
365          self.save_modified_session()          self.save_modified_session()
366          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.thuban", wxOPEN)
                            "*.thuban", wxOPEN)  
367          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
368              main.app.OpenSession(dlg.GetPath())              self.prepare_new_session()
369                self.application.OpenSession(dlg.GetPath())
370          dlg.Destroy()          dlg.Destroy()
371    
372      def SaveSession(self):      def SaveSession(self):
373          if main.app.session.filename == None:          if self.application.session.filename == None:
374              self.SaveSessionAs()              self.SaveSessionAs()
375          main.app.SaveSession()          else:
376                self.application.SaveSession()
377    
378      def SaveSessionAs(self):      def SaveSessionAs(self):
379          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
380                             "*.thuban", wxOPEN)                             "*.thuban", wxSAVE|wxOVERWRITE_PROMPT)
381          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
382              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
383              main.app.SaveSession()              self.application.SaveSession()
384          dlg.Destroy()          dlg.Destroy()
385    
386      def Exit(self):      def Exit(self):
387          self.Close(false)          self.Close(False)
388    
389      def OnClose(self, event):      def _OnClose(self, event):
390          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
391          if result == wxID_CANCEL:          if result == wxID_CANCEL:
392              event.Veto()              event.Veto()
393          else:          else:
394                # FIXME: it would be better to tie the unsubscription to
395                # wx's destroy event, but that isn't implemented for wxGTK
396                # yet.
397                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
398                DockFrame._OnClose(self, event)
399              self.Destroy()              self.Destroy()
400    
401      def SetMap(self, map):      def SetMap(self, map):
402          self.canvas.SetMap(map)          self.canvas.SetMap(map)
403            self.__SetTitle(map.Title())
404    
405            dialog = self.FindRegisteredDock("legend")
406            if dialog is not None:
407                dialog.GetPanel().SetMap(self.Map())
408    
409        def Map(self):
410            """Return the map displayed by this mainwindow"""
411    
412            return self.canvas.Map()
413    
414      def ShowSessionTree(self):      def ToggleSessionTree(self):
415            """If the session tree is shown close it otherwise create a new tree"""
416          name = "session_tree"          name = "session_tree"
417          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
418          if dialog is None:          if dialog is None:
419              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
420              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
421              dialog.Show(true)              dialog.Show(True)
422          else:          else:
423              # FIXME: bring dialog to front here              dialog.Close()
424              pass  
425        def SessionTreeShown(self):
426            """Return true iff the session tree is currently shown"""
427            return self.get_open_dialog("session_tree") is not None
428    
429      def About(self):      def About(self):
430          self.RunMessageBox("About",          self.RunMessageBox(_("About"),
431                             ("Thuban is a program for\n"                             _("Thuban v%s\n"
432                                #"Build Date: %s\n"
433                                "\n"
434                                "Thuban is a program for\n"
435                              "exploring geographic data.\n"                              "exploring geographic data.\n"
436                              "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
437                              "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GNU GPL"
438                               % __ThubanVersion__), #__BuildDate__)),
439                             wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
440    
441      def AddLayer(self):      def AddLayer(self):
442          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
443                             wxOPEN)                             wxOPEN)
444          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
445              filename = dlg.GetPath()              filename = dlg.GetPath()
446              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
447              layer = Layer(title, filename)              store = self.application.Session().OpenShapefile(filename)
448                layer = Layer(title, store)
449              map = self.canvas.Map()              map = self.canvas.Map()
450              has_layers = map.HasLayers()              has_layers = map.HasLayers()
451              try:              try:
452                  map.AddLayer(layer)                  map.AddLayer(layer)
453              except IOError:              except IOError:
454                  # the layer couldn't be opened                  # the layer couldn't be opened
455                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
456                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
457              else:              else:
458                  if not has_layers:                  if not has_layers:
459                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
460                      # new map to the window                      # new map to the window
461                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
462          dlg.Destroy()          dlg.Destroy()
# Line 353  class MainWindow(wxFrame): Line 466  class MainWindow(wxFrame):
466          if layer is not None:          if layer is not None:
467              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
468    
469        def CanRemoveLayer(self):
470            """Return true if the currently selected layer can be deleted.
471    
472            If no layer is selected return False.
473    
474            The return value of this method determines whether the remove
475            layer command is sensitive in menu.
476            """
477            layer = self.current_layer()
478            if layer is not None:
479                return self.canvas.Map().CanRemoveLayer(layer)
480            return False
481    
482      def RaiseLayer(self):      def RaiseLayer(self):
483          layer = self.current_layer()          layer = self.current_layer()
484          if layer is not None:          if layer is not None:
485              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
486            
487      def LowerLayer(self):      def LowerLayer(self):
488          layer = self.current_layer()          layer = self.current_layer()
489          if layer is not None:          if layer is not None:
# Line 368  class MainWindow(wxFrame): Line 494  class MainWindow(wxFrame):
494    
495          If no layer is selected, return None          If no layer is selected, return None
496          """          """
497          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
498    
499      def has_selected_layer(self):      def has_selected_layer(self):
500          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
501          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
502    
503        def has_selected_shapes(self):
504            """Return true if a shape is currently selected"""
505            return self.canvas.HasSelectedShapes()
506    
507      def choose_color(self):      def choose_color(self):
508          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 390  class MainWindow(wxFrame): Line 520  class MainWindow(wxFrame):
520          dlg.Destroy()          dlg.Destroy()
521          return color          return color
522    
     def LayerFillColor(self):  
         layer = self.current_layer()  
         if layer is not None:  
             color = self.choose_color()  
             if color is not None:  
                 layer.SetFill(color)  
   
     def LayerTransparentFill(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetFill(None)  
   
     def LayerOutlineColor(self):  
         layer = self.current_layer()  
         if layer is not None:  
             color = self.choose_color()  
             if color is not None:  
                 layer.SetStroke(color)  
   
     def LayerNoOutline(self):  
         layer = self.current_layer()  
         if layer is not None:  
             layer.SetStroke(None)  
   
523      def HideLayer(self):      def HideLayer(self):
524          layer = self.current_layer()          layer = self.current_layer()
525          if layer is not None:          if layer is not None:
# Line 431  class MainWindow(wxFrame): Line 537  class MainWindow(wxFrame):
537              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
538              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
539              if dialog is None:              if dialog is None:
540                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
541                                                "Table: %s" % layer.Title(),                                                 _("Table: %s") % layer.Title(),
542                                                layer, table)                                                     layer, table)
543                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
544                  dialog.Show(true)                  dialog.Show(true)
545              else:              else:
546                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
547                  pass                  pass
548    
549      def Projection(self):      def MapProjection(self):
550          map = self.canvas.Map()  
551          proj = map.projection          name = "map_projection"
552          if proj is None:          dialog = self.get_open_dialog(name)
553              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())  
554            if dialog is None:
555                map = self.canvas.Map()
556                dialog = projdialog.ProjFrame(self, name,
557                         _("Map Projection: %s") % map.Title(), map)
558                self.add_dialog(name, dialog)
559                dialog.Show()
560            dialog.Raise()
561    
562        def LayerProjection(self):
563    
564            layer = self.current_layer()
565    
566            name = "layer_projection" + str(id(layer))
567            dialog = self.get_open_dialog(name)
568    
569            if dialog is None:
570                map = self.canvas.Map()
571                dialog = projdialog.ProjFrame(self, name,
572                         _("Layer Projection: %s") % layer.Title(), layer)
573                self.add_dialog(name, dialog)
574                dialog.Show()
575            dialog.Raise()
576    
577        def LayerEditProperties(self):
578    
579            #
580            # the menu option for this should only be available if there
581            # is a current layer, so we don't need to check if the
582            # current layer is None
583            #
584    
585            layer = self.current_layer()
586            self.OpenLayerProperties(layer)
587    
588        def OpenLayerProperties(self, layer, group = None):
589            name = "layer_properties" + str(id(layer))
590            dialog = self.get_open_dialog(name)
591    
592            if dialog is None:
593                dialog = Classifier(self, name, layer, group)
594                self.add_dialog(name, dialog)
595                dialog.Show()
596            dialog.Raise()
597    
598    
599        def ShowLegend(self):
600            if not self.LegendShown():
601                self.ToggleLegend()
602    
603        def ToggleLegend(self):
604            """Show the legend if it's not shown otherwise hide it again"""
605            name = "legend"
606            dialog = self.FindRegisteredDock(name)
607    
608            if dialog is None:
609                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
610                legend.LegendPanel(dialog, None, self)
611                dialog.Dock()
612                dialog.GetPanel().SetMap(self.Map())
613                dialog.Show()
614          else:          else:
615              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,              dialog.Show(not dialog.IsShown())
616                                                 map.BoundingBox())  
617          if proj4Dlg.ShowModal() == wxID_OK:      def LegendShown(self):
618              params = proj4Dlg.GetParams()          """Return true iff the legend is currently open"""
619              if params is not None:          dialog = self.FindRegisteredDock("legend")
620                  proj = Projection(params)          return dialog is not None and dialog.IsShown()
             else:  
                 proj = None  
             map.SetProjection(proj)  
         proj4Dlg.Destroy()  
621    
622      def ZoomInTool(self):      def ZoomInTool(self):
623          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 476  class MainWindow(wxFrame): Line 638  class MainWindow(wxFrame):
638      def FullExtent(self):      def FullExtent(self):
639          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
640    
641        def FullLayerExtent(self):
642            self.canvas.FitLayerToWindow(self.current_layer())
643    
644        def FullSelectionExtent(self):
645            self.canvas.FitSelectedToWindow()
646    
647      def PrintMap(self):      def PrintMap(self):
648          self.canvas.Print()          self.canvas.Print()
649    
650      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
651            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
652                                    self.Map().Title())
653            if dlg.ShowModal() == wxID_OK:
654                title = dlg.GetValue()
655                if title != "":
656                    self.Map().SetTitle(title)
657                    self.__SetTitle(title)
658    
659            dlg.Destroy()
660    
661        def identify_view_on_demand(self, layer, shapes):
662            """Subscribed to the canvas' SHAPES_SELECTED message
663    
664            If the current tool is the identify tool, at least one shape is
665            selected and the identify dialog is not shown, show the dialog.
666            """
667            # If the selection has become empty we don't need to do
668            # anything. Otherwise it could happen that the dialog was popped
669            # up when the selection became empty, e.g. when a new selection
670            # is opened while the identify tool is active and dialog had
671            # been closed
672            if not shapes:
673                return
674    
675          name = "identify_view"          name = "identify_view"
676          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
677              if not self.dialog_open(name):              if not self.dialog_open(name):
678                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
679                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
680                  dialog.Show(true)                  dialog.Show(True)
681              else:              else:
682                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
683                  pass                  pass
684    
685        def __SetTitle(self, title):
686            self.SetTitle("Thuban - " + title)
687    
688  #  #
689  # Define all the commands available in the main window  # Define all the commands available in the main window
690  #  #
# Line 497  class MainWindow(wxFrame): Line 692  class MainWindow(wxFrame):
692    
693  # Helper functions to define common command implementations  # Helper functions to define common command implementations
694  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
695      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
696      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
697    
698  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
699                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
700      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
701      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
702                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
703                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
704    
705    def make_check_current_tool(toolname):
706        """Return a function that tests if the currently active tool is toolname
707    
708        The returned function can be called with the context and returns
709        true iff the currently active tool's name is toolname. It's directly
710        usable as the 'checked' callback of a command.
711        """
712        def check_current_tool(context, name=toolname):
713            return context.mainwindow.canvas.CurrentTool() == name
714        return check_current_tool
715    
716  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
717                    icon = ""):                    icon = "", sensitive = None):
718      """Add a tool command"""      """Add a tool command"""
719      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
720          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
721      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
722                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
723    
724  def _has_selected_layer(context):  def _has_selected_layer(context):
725      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
726      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
727    
728    def _has_selected_shapes(context):
729        """Return true if a layer is selected in the context"""
730        return context.mainwindow.has_selected_shapes()
731    
732    def _can_remove_layer(context):
733        return context.mainwindow.CanRemoveLayer()
734    
735    def _has_tree_window_shown(context):
736        """Return true if the tree window is shown"""
737        return context.mainwindow.SessionTreeShown()
738    
739    def _has_visible_map(context):
740        """Return true iff theres a visible map in the mainwindow.
741    
742        A visible map is a map with at least one visible layer."""
743        map = context.mainwindow.Map()
744        if map is not None:
745            for layer in map.Layers():
746                if layer.Visible():
747                    return 1
748        return 0
749    
750    def _has_legend_shown(context):
751        """Return true if the legend window is shown"""
752        return context.mainwindow.LegendShown()
753    
754    
755  # File menu  # File menu
756  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
757  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session..."), "OpenSession")
758  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
759  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs")
760  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
761  _method_command("exit", "&Exit", "Exit")                  checked = _has_tree_window_shown)
762    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
763                    checked = _has_legend_shown)
764    _method_command("exit", _("E&xit"), "Exit")
765    
766  # Help menu  # Help menu
767  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About")
768    
769    
770  # Map menu  # Map menu
771  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection")
772    
773  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
774                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
775  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
776                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
777  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
778                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
779  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
780                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
781  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
782                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
783  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
784                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
785  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
786    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
787                  helptext = _("Add/Remove labels"), icon = "label",
788                  sensitive = _has_visible_map)
789    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
790                   helptext = _("Full Extent"), icon = "fullextent",
791                  sensitive = _has_visible_map)
792    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
793                   helptext = _("Full Layer Extent"), icon = "fulllayerextent",
794                  sensitive = _has_selected_layer)
795    _method_command("selected_full_extent", _("&Full selection extent"), "FullSelectionExtent",
796                   helptext = _("Full Selection Extent"), icon = "fullselextent",
797                  sensitive = _has_selected_shapes)
798    _method_command("map_print", _("Prin&t"), "PrintMap",
799                    helptext = _("Print the map"))
800    _method_command("map_rename", _("&Rename..."), "RenameMap",
801                    helptext = _("Rename the map"))
802    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
803                    helptext = _("Add a new layer to active map"))
804    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
805                    helptext = _("Remove selected layer(s)"),
806                    sensitive = _can_remove_layer)
807    
808  # Layer menu  # Layer menu
809  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
                 helptext = "Add a new layer to active map")  
 _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  
                 helptext = "Remove selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  
                 helptext = "Set the fill color of selected layer(s)",  
810                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
811  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
812                  "LayerTransparentFill",                  helptext = _("Raise selected layer(s)"),
                 helptext = "Do not fill the selected layer(s)",  
813                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
814  _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
815                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer(s)"),
816                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
817  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
818                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
819                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
820  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
821                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
822                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
823  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
824                  helptext = "Lower selected layer(s)",                  helptext = _("Show the selected layer's table"),
825                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
826  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_properties", _("&Properties..."), "LayerEditProperties",
                 helptext = "Make selected layer(s) visible",  
827                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
 _method_command("layer_hide", "&Hide", "HideLayer",  
                 helptext = "Make selected layer(s) unvisible",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  
                 helptext = "Show the selected layer's table",  
                 sensitive = _has_selected_layer)  
   
828    
829  # the menu structure  # the menu structure
830  main_menu = Menu("<main>", "<main>",  main_menu = Menu("<main>", "<main>",
831                   [Menu("file", "&File",                   [Menu("file", _("&File"),
832                         ["new_session", "open_session", None,                         ["new_session", "open_session", None,
833                          "save_session", "save_session_as", None,                          "save_session", "save_session_as", None,
834                          "show_session_tree", None,                          "toggle_session_tree", None,
835                          "exit"]),                          "exit"]),
836                    Menu("map", "&Map",                    Menu("map", _("&Map"),
837                         ["layer_add", "layer_remove",                         ["layer_add", "layer_remove", "map_rename",
838                          None,                          None,
839                          "map_projection",                          "map_projection",
840                          None,                          None,
841                          "map_zoom_in_tool", "map_zoom_out_tool",                          "map_zoom_in_tool", "map_zoom_out_tool",
842                          "map_pan_tool", "map_identify_tool", "map_label_tool",                          "map_pan_tool",
843                            "map_full_extent",
844                            "layer_full_extent",
845                            "selected_full_extent",
846                          None,                          None,
847                          "map_full_extent",                          "map_identify_tool", "map_label_tool",
848                          None,                          None,
849                          "map_print"]),                          "toggle_legend",
                   Menu("layer", "&Layer",  
                        ["layer_fill_color", "layer_transparent_fill",  
                         "layer_outline_color", "layer_no_outline",  
850                          None,                          None,
851                          "layer_raise", "layer_lower",                          "map_print"]),
852                      Menu("layer", _("&Layer"),
853                            ["layer_raise", "layer_lower",
854                          None,                          None,
855                          "layer_show", "layer_hide",                          "layer_show", "layer_hide",
856                          None,                          None,
857                          "layer_show_table"]),                          "layer_show_table",
858                    Menu("help", "&Help",                          None,
859                            "layer_projection",
860                            "layer_properties"]),
861                      Menu("help", _("&Help"),
862                         ["help_about"])])                         ["help_about"])])
863    
864  # the main toolbar  # the main toolbar
865    
866  main_toolbar = Menu("<toolbar>", "<toolbar>",  main_toolbar = Menu("<toolbar>", "<toolbar>",
867                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",                      ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
868                       "map_identify_tool", "map_label_tool", "map_full_extent"])                       "map_full_extent",
869                         "layer_full_extent",
870                         "selected_full_extent",
871                         None,
872                         "map_identify_tool", "map_label_tool"])
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