/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 123 by bh, Mon Apr 29 18:05:04 2002 UTC revision 580 by jonathan, Mon Mar 31 18:32:22 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  import sys, os  __ThubanVersion__ = "0.2" #"$THUBAN_0_2$"
16    #__BuildDate__ = "$Date$"
17    
18    import os
19    
20  from wxPython.wx import *  from wxPython.wx import *
21    
22  import Thuban  import Thuban
23  from Thuban.Model.session import Session, create_empty_session  from Thuban import _
24  from Thuban.Model.map import Map  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
27  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
# Line 27  import view Line 30  import view
30  import tree  import tree
31  import proj4dialog  import proj4dialog
32  import tableview, identifyview  import tableview, identifyview
33    import classifier
34    import legend
35    from menu import Menu
36    
37    from context import Context
38    from command import registry, Command, ToolCommand
39    from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION, DOCKABLE_DOCKED, DOCKABLE_UNDOCKED, DOCKABLE_CLOSED
40    
41  import main  from Thuban.UI.dock import DockableWindow, DockFrame, DockPanel
 from command import registry, Command  
 from messages import SELECTED_SHAPE, VIEW_POSITION  
42    
43    
44  # the directory where the toolbar icons are stored  # the directory where the toolbar icons are stored
45  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")
46  bitmapext = ".xpm"  bitmapext = ".xpm"
47    
48    ID_WINDOW_LEGEND = 4001
49    ID_WINDOW_CANVAS = 4002
50    
51    
52  class MainWindow(wxFrame):  class MainWindow(DockFrame):
53    
54      def __init__(self, parent, ID, interactor):      # Some messages that can be subscribed/unsubscribed directly through
55          wxFrame.__init__(self, parent, ID, 'Thuban',      # the MapCanvas come in fact from other objects. This is a map to
56                           wxDefaultPosition, wxSize(400, 300))      # map those messages to the names of the instance variables they
57        # actually come from. This delegation is implemented in the
58        # Subscribe and unsubscribed methods
59        delegated_messages = {LAYER_SELECTED: "canvas",
60                              SHAPES_SELECTED: "canvas"}
61    
62        # Methods delegated to some instance variables. The delegation is
63        # implemented in the __getattr__ method.
64        delegated_methods = {"SelectLayer": "canvas",
65                             "SelectShapes": "canvas",
66                             }
67    
68        def __init__(self, parent, ID, title, application, interactor,
69                     initial_message = None, size = wxSize(-1, -1)):
70            DockFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
71            #wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
72    
73          self.interactor = interactor          self.application = application
74    
75          self.CreateStatusBar()          self.CreateStatusBar()
76          self.SetStatusText("This is the wxPython-based "          if initial_message:
77                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
78    
79          self.identify_view = None          self.identify_view = None
80    
81          self.init_ids()          self.init_ids()
82    
83          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
84            self.SetMenuBar(self.build_menu_bar(main_menu))
         menu = wxMenu()  
         menuBar.Append(menu, "&File");  
         for name in ["new_session", "open_session", None,  
                      "save_session", "save_session_as", None,  
                      "exit"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Map");  
         for name in ["layer_add", "layer_remove",  
                      None,  
                      "map_projection",  
                      None,  
                      "map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool",  
                      None,  
                      "map_full_extent",  
                      None,  
                      "map_print"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Layer");  
         for name in ["layer_fill_color", "layer_transparent_fill",  
                      "layer_ourline_color", "layer_no_outline",  
                      None,  
                      "layer_raise", "layer_lower",  
                      None,  
                      "layer_show", "layer_hide",  
                      None,  
                      "layer_show_table"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Help");  
         self.add_menu_command(menu, "help_about")  
   
         self.SetMenuBar(menuBar)  
   
         # toolbar  
         toolbar = self.CreateToolBar(wxTB_3DBUTTONS)  
85    
86          # set the size of the tools' bitmaps. Not needed on wxGTK, but          # Similarly, create the toolbar from main_toolbar
87          # on Windows. We probably shouldn't hardwire the bitmap size          toolbar = self.build_toolbar(main_toolbar)
         # here  
         toolbar.SetToolBitmapSize(wxSize(24, 24))  
   
         for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool", "map_full_extent"]:  
             self.add_toolbar_command(toolbar, name)  
88          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
89          toolbar.Realize()          toolbar.Realize()
90    
91    
92          # Create the map canvas          # Create the map canvas
93          canvas = view.MapCanvas(self, -1, interactor)          canvas = view.MapCanvas(self, -1)
94          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)          canvas.Subscribe(VIEW_POSITION, self.view_position_changed)
95            canvas.Subscribe(SHAPES_SELECTED, self.identify_view_on_demand)
96          self.canvas = canvas          self.canvas = canvas
97    
98            self.SetMainWindow(self.canvas)
99    
100            self.SetAutoLayout(True)
101    
102          self.init_dialogs()          self.init_dialogs()
103    
104          interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand)          EVT_CLOSE(self, self._OnClose)
105    
106        def Subscribe(self, channel, *args):
107            """Subscribe a function to a message channel.
108    
109            If channel is one of the delegated messages call the appropriate
110            object's Subscribe method. Otherwise do nothing.
111            """
112            if channel in self.delegated_messages:
113                object = getattr(self, self.delegated_messages[channel])
114                object.Subscribe(channel, *args)
115            else:
116                print "Trying to subscribe to unsupported channel %s" % channel
117    
118        def Unsubscribe(self, channel, *args):
119            """Unsubscribe a function from a message channel.
120    
121            If channel is one of the delegated messages call the appropriate
122            object's Unsubscribe method. Otherwise do nothing.
123            """
124            if channel in self.delegated_messages:
125                object = getattr(self, self.delegated_messages[channel])
126                object.Unsubscribe(channel, *args)
127    
128          EVT_CLOSE(self, self.OnClose)      def __getattr__(self, attr):
129            """If attr is one of the delegated methods return that method
130    
131            Otherwise raise AttributeError.
132            """
133            if attr in self.delegated_methods:
134                return getattr(getattr(self, self.delegated_methods[attr]), attr)
135            raise AttributeError(attr)
136    
137      def init_ids(self):      def init_ids(self):
138          """Initialize the ids"""          """Initialize the ids"""
139          self.current_id = 6000          self.current_id = 6000
140          self.id_to_name = {}          self.id_to_name = {}
141          self.name_to_id = {}          self.name_to_id = {}
142            self.events_bound = {}
143    
144      def get_id(self, name):      def get_id(self, name):
145          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 137  class MainWindow(wxFrame): Line 152  class MainWindow(wxFrame):
152              self.name_to_id[name] = ID              self.name_to_id[name] = ID
153              self.id_to_name[ID] = name              self.id_to_name[ID] = name
154          return ID          return ID
155            
156        def bind_command_events(self, command, ID):
157            """Bind the necessary events for the given command and ID"""
158            if not self.events_bound.has_key(ID):
159                # the events haven't been bound yet
160                EVT_MENU(self, ID, self.invoke_command)
161                if command.IsDynamic():
162                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
163    
164        def build_menu_bar(self, menudesc):
165            """Build and return the menu bar from the menu description"""
166            menu_bar = wxMenuBar()
167    
168            for item in menudesc.items:
169                # here the items must all be Menu instances themselves
170                menu_bar.Append(self.build_menu(item), item.title)
171    
172            return menu_bar
173    
174        def build_menu(self, menudesc):
175            """Return a wxMenu built from the menu description menudesc"""
176            wxmenu = wxMenu()
177            last = None
178            for item in menudesc.items:
179                if item is None:
180                    # a separator. Only add one if the last item was not a
181                    # separator
182                    if last is not None:
183                        wxmenu.AppendSeparator()
184                elif isinstance(item, Menu):
185                    # a submenu
186                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
187                else:
188                    # must the name the name of a command
189                    self.add_menu_command(wxmenu, item)
190                last = item
191            return wxmenu
192    
193        def build_toolbar(self, toolbardesc):
194            """Build and return the main toolbar window from a toolbar description
195    
196            The parameter should be an instance of the Menu class but it
197            should not contain submenus.
198            """
199            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
200    
201            # set the size of the tools' bitmaps. Not needed on wxGTK, but
202            # on Windows, although it doesn't work very well there. It seems
203            # that only 16x16 icons are really supported on windows.
204            # We probably shouldn't hardwire the bitmap size here.
205            toolbar.SetToolBitmapSize(wxSize(24, 24))
206    
207            for item in toolbardesc.items:
208                if item is None:
209                    toolbar.AddSeparator()
210                else:
211                    # assume it's a string.
212                    self.add_toolbar_command(toolbar, item)
213    
214            return toolbar
215    
216      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
217          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
218    
# Line 151  class MainWindow(wxFrame): Line 226  class MainWindow(wxFrame):
226                  ID = self.get_id(name)                  ID = self.get_id(name)
227                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
228                              command.IsCheckCommand())                              command.IsCheckCommand())
229                  EVT_MENU(self, ID, self.invoke_command)                  self.bind_command_events(command, ID)
                 if command.IsDynamic():  
                     EVT_UPDATE_UI(self, ID, self.update_command_ui)  
230              else:              else:
231                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
232    
233      def add_toolbar_command(self, toolbar, name):      def add_toolbar_command(self, toolbar, name):
234          """Add the command with name name to the toolbar toolbar.          """Add the command with name name to the toolbar toolbar.
# Line 175  class MainWindow(wxFrame): Line 248  class MainWindow(wxFrame):
248                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
249                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
250                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
251                    self.bind_command_events(command, ID)
252              else:              else:
253                  print "Unknown command %s" % name                  print _("Unknown command %s") % name
254    
255        def Context(self):
256            """Return the context object for a command invoked from this window
257            """
258            return Context(self.application, self.application.Session(), self)
259    
260      def invoke_command(self, event):      def invoke_command(self, event):
261          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
262          if name is not None:          if name is not None:
263              command = registry.Command(name)              command = registry.Command(name)
264              command.Execute(self)              command.Execute(self.Context())
265          else:          else:
266              print "Unknown command ID %d" % event.GetId()              print _("Unknown command ID %d") % event.GetId()
267    
268      def update_command_ui(self, event):      def update_command_ui(self, event):
269          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
270            context = self.Context()
271          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
272          if command is not None:          if command is not None:
273              event.Enable(command.Sensitive(self))              sensitive = command.Sensitive(context)
274              event.SetText(command.DynText(self))              event.Enable(sensitive)
275                if command.IsTool() and not sensitive and command.Checked(context):
276                    # When a checked tool command is disabled deselect all
277                    # tools. Otherwise the tool would remain active but it
278                    # might lead to errors if the tools stays active. This
279                    # problem occurred in GREAT-ER and this fixes it, but
280                    # it's not clear to me whether this is really the best
281                    # way to do it (BH, 20021206).
282                    self.canvas.SelectTool(None)
283                event.SetText(command.DynText(context))
284              if command.IsCheckCommand():              if command.IsCheckCommand():
285                  event.Check(command.Checked(self))                      event.Check(command.Checked(context))
286    
287      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
288          """Run a modla message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
289          and return the result"""          and return the result"""
290          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
291            dlg.CenterOnParent()
292          result = dlg.ShowModal()          result = dlg.ShowModal()
293          dlg.Destroy()          dlg.Destroy()
294          return result          return result
# Line 212  class MainWindow(wxFrame): Line 302  class MainWindow(wxFrame):
302    
303      def add_dialog(self, name, dialog):      def add_dialog(self, name, dialog):
304          if self.dialogs.has_key(name):          if self.dialogs.has_key(name):
305              raise RuntimeError("The Dialog named %s is already open" % name)              raise RuntimeError(_("The Dialog named %s is already open") % name)
306          self.dialogs[name] = dialog          self.dialogs[name] = dialog
307    
308      def dialog_open(self, name):      def dialog_open(self, name):
# Line 230  class MainWindow(wxFrame): Line 320  class MainWindow(wxFrame):
320              text = "(%10.10g, %10.10g)" % pos              text = "(%10.10g, %10.10g)" % pos
321          else:          else:
322              text = ""              text = ""
323            self.set_position_text(text)
324    
325        def set_position_text(self, text):
326            """Set the statusbar text showing the current position.
327    
328            By default the text is shown in field 0 of the status bar.
329            Override this method in derived classes to put it into a
330            different field of the statusbar.
331            """
332          self.SetStatusText(text)          self.SetStatusText(text)
333    
334      def save_modified_session(self, can_veto = 1):      def save_modified_session(self, can_veto = 1):
# Line 241  class MainWindow(wxFrame): Line 340  class MainWindow(wxFrame):
340          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
341          a cancel button, otherwise not.          a cancel button, otherwise not.
342          """          """
343          if main.app.session.WasModified():          if self.application.session.WasModified():
344              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
345              if can_veto:              if can_veto:
346                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
347              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
348                                          ("The session has been modified."                                          _("The session has been modified."
349                                           " Do you want to save it?"),                                           " Do you want to save it?"),
350                                          flags)                                          flags)
351              if result == wxID_YES:              if result == wxID_YES:
# Line 255  class MainWindow(wxFrame): Line 354  class MainWindow(wxFrame):
354              result = wxID_NO              result = wxID_NO
355          return result          return result
356    
357        def prepare_new_session(self):
358            for d in self.dialogs.values():
359                if not isinstance(d, tree.SessionTreeView):
360                    d.Close()
361    
362      def NewSession(self):      def NewSession(self):
363          self.save_modified_session()          self.save_modified_session()
364          main.app.SetSession(create_empty_session())          self.prepare_new_session()
365            self.application.SetSession(create_empty_session())
366    
367      def OpenSession(self):      def OpenSession(self):
368          self.save_modified_session()          self.save_modified_session()
369          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.thuban", wxOPEN)
                            "*.session", wxOPEN)  
370          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
371              main.app.OpenSession(dlg.GetPath())              self.prepare_new_session()
372                self.application.OpenSession(dlg.GetPath())
373          dlg.Destroy()          dlg.Destroy()
374    
375      def SaveSession(self):      def SaveSession(self):
376          if main.app.session.filename == None:          if self.application.session.filename == None:
377              self.SaveSessionAs()              self.SaveSessionAs()
378          main.app.SaveSession()          else:
379                self.application.SaveSession()
380    
381      def SaveSessionAs(self):      def SaveSessionAs(self):
382          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
383                             "*.session", wxOPEN)                             "*.thuban", wxOPEN)
384          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
385              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
386              main.app.SaveSession()              self.application.SaveSession()
387          dlg.Destroy()          dlg.Destroy()
388    
389      def Exit(self):      def Exit(self):
390          self.Close(false)          self.Close(false)
391    
392      def OnClose(self, event):      def _OnClose(self, event):
393          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
394          if result == wxID_CANCEL:          if result == wxID_CANCEL:
395              event.Veto()              event.Veto()
396          else:          else:
397                # FIXME: it would be better to tie the unsubscription to
398                # wx's destroy event, but that isn't implemented for wxGTK
399                # yet.
400                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
401                DockFrame._OnClose(self, event)
402              self.Destroy()              self.Destroy()
403    
404      def SetMap(self, map):      def SetMap(self, map):
405          self.canvas.SetMap(map)          self.canvas.SetMap(map)
406            #self.legendPanel.SetMap(map)
407    
408        def Map(self):
409            """Return the map displayed by this mainwindow"""
410    
411            # sanity check
412            #assert(self.canvas.Map() is self.legendPanel.GetMap())
413    
414            return self.canvas.Map()
415    
416      def ShowSessionTree(self):      def ShowSessionTree(self):
417          name = "session_tree"          name = "session_tree"
418          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
419          if dialog is None:          if dialog is None:
420              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
421              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
422              dialog.Show(true)              dialog.Show(True)
423          else:          else:
424              # FIXME: bring dialog to front here              # FIXME: bring dialog to front here
425              pass              pass
426    
427    
428      def About(self):      def About(self):
429          self.RunMessageBox("About",          self.RunMessageBox(_("About"),
430                             ("Thuban is a program for\n"                             _("Thuban v%s\n"
431                                #"Build Date: %s\n"
432                                "\n"
433                                "Thuban is a program for\n"
434                              "exploring geographic data.\n"                              "exploring geographic data.\n"
435                              "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
436                              "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GNU GPL"
437                               % __ThubanVersion__), #__BuildDate__)),
438                             wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
439    
440      def AddLayer(self):      def AddLayer(self):
441          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
442                             wxOPEN)                             wxOPEN)
443          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
444              filename = dlg.GetPath()              filename = dlg.GetPath()
# Line 325  class MainWindow(wxFrame): Line 450  class MainWindow(wxFrame):
450                  map.AddLayer(layer)                  map.AddLayer(layer)
451              except IOError:              except IOError:
452                  # the layer couldn't be opened                  # the layer couldn't be opened
453                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
454                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
455              else:              else:
456                  if not has_layers:                  if not has_layers:
457                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
458                      # new map to the window                      # new map to the window
459                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
460          dlg.Destroy()          dlg.Destroy()
# Line 339  class MainWindow(wxFrame): Line 464  class MainWindow(wxFrame):
464          if layer is not None:          if layer is not None:
465              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
466    
467        def CanRemoveLayer(self):
468            """Return true if the currently selected layer can be deleted.
469    
470            If no layer is selected return false.
471    
472            The return value of this method determines whether the remove
473            layer command is sensitive in menu.
474            """
475            layer = self.current_layer()
476            if layer is not None:
477                return self.canvas.Map().CanRemoveLayer(layer)
478            return 0
479    
480      def RaiseLayer(self):      def RaiseLayer(self):
481          layer = self.current_layer()          layer = self.current_layer()
482          if layer is not None:          if layer is not None:
483              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
484            
485      def LowerLayer(self):      def LowerLayer(self):
486          layer = self.current_layer()          layer = self.current_layer()
487          if layer is not None:          if layer is not None:
# Line 354  class MainWindow(wxFrame): Line 492  class MainWindow(wxFrame):
492    
493          If no layer is selected, return None          If no layer is selected, return None
494          """          """
495          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
496    
497      def has_selected_layer(self):      def has_selected_layer(self):
498          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
499          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
500    
501      def choose_color(self):      def choose_color(self):
502          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 381  class MainWindow(wxFrame): Line 519  class MainWindow(wxFrame):
519          if layer is not None:          if layer is not None:
520              color = self.choose_color()              color = self.choose_color()
521              if color is not None:              if color is not None:
522                  layer.SetFill(color)                  layer.GetClassification().SetDefaultFill(color)
523    
524      def LayerTransparentFill(self):      def LayerTransparentFill(self):
525          layer = self.current_layer()          layer = self.current_layer()
526          if layer is not None:          if layer is not None:
527              layer.SetFill(None)              layer.GetClassification().SetDefaultFill(Color.None)
528    
529      def LayerOutlineColor(self):      def LayerOutlineColor(self):
530          layer = self.current_layer()          layer = self.current_layer()
531          if layer is not None:          if layer is not None:
532              color = self.choose_color()              color = self.choose_color()
533              if color is not None:              if color is not None:
534                  layer.SetStroke(color)                  layer.GetClassification().SetDefaultLineColor(color)
535    
536      def LayerNoOutline(self):      def LayerNoOutline(self):
537          layer = self.current_layer()          layer = self.current_layer()
538          if layer is not None:          if layer is not None:
539              layer.SetStroke(None)              layer.GetClassification().SetDefaultLineColor(Color.None)
540    
541      def HideLayer(self):      def HideLayer(self):
542          layer = self.current_layer()          layer = self.current_layer()
# Line 417  class MainWindow(wxFrame): Line 555  class MainWindow(wxFrame):
555              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
556              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
557              if dialog is None:              if dialog is None:
558                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
559                                                "Table: %s" % layer.Title(),                                                 _("Table: %s") % layer.Title(),
560                                                layer, table)                                                     layer, table)
561                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
562                  dialog.Show(true)                  dialog.Show(true)
563              else:              else:
# Line 443  class MainWindow(wxFrame): Line 581  class MainWindow(wxFrame):
581              map.SetProjection(proj)              map.SetProjection(proj)
582          proj4Dlg.Destroy()          proj4Dlg.Destroy()
583    
584        def Classify(self):
585    
586            #
587            # the menu option for this should only be available if there
588            # is a current layer, so we don't need to check if the
589            # current layer is None
590            #
591    
592            layer = self.current_layer()
593            self.OpenClassifier(layer)
594    
595        def OpenClassifier(self, layer, group = None):
596            name = "classifier" + str(id(layer))
597            dialog = self.get_open_dialog(name)
598    
599            if dialog is None:
600                dialog = classifier.Classifier(self, name, layer, group)
601                self.add_dialog(name, dialog)
602                dialog.Show()
603            dialog.Raise()
604    
605    
606        def ShowLegend(self, switch = False):
607            name = "legend"
608            dialog = self.FindRegisteredDock(name)
609    
610            if dialog is None:
611                title = "Legend: %s" % self.Map().Title()
612                dialog = self.CreateDock(name, -1, title, wxLAYOUT_LEFT)
613                legend.LegendPanel(dialog, None, self)
614                dialog.Dock()
615    
616            dialog.GetPanel().SetMap(self.Map())
617            dialog.Show()
618    
619      def ZoomInTool(self):      def ZoomInTool(self):
620          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
621    
# Line 465  class MainWindow(wxFrame): Line 638  class MainWindow(wxFrame):
638      def PrintMap(self):      def PrintMap(self):
639          self.canvas.Print()          self.canvas.Print()
640    
641      def identify_view_on_demand(self, layer, shape):      def identify_view_on_demand(self, layer, shapes):
642          name = "identify_view"          name = "identify_view"
643          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
644              if not self.dialog_open(name):              if not self.dialog_open(name):
645                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
646                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
647                  dialog.Show(true)                  dialog.Show(True)
648              else:              else:
649                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
650                  pass                  pass
# Line 483  class MainWindow(wxFrame): Line 656  class MainWindow(wxFrame):
656    
657  # Helper functions to define common command implementations  # Helper functions to define common command implementations
658  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
659      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
660      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
661    
662  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
663                      icon = "", sensitive = None):                      icon = "", sensitive = None):
664      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
665      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
666                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
667                           sensitive = sensitive))                           sensitive = sensitive))
668    
669    def make_check_current_tool(toolname):
670        """Return a function that tests if the currently active tool is toolname
671    
672        The returned function can be called with the context and returns
673        true iff the currently active tool's name is toolname. It's directly
674        usable as the 'checked' callback of a command.
675        """
676        def check_current_tool(context, name=toolname):
677            return context.mainwindow.canvas.CurrentTool() == name
678        return check_current_tool
679    
680  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
681                    icon = ""):                    icon = "", sensitive = None):
682      """Add a tool command"""      """Add a tool command"""
683      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
684          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
685      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
686                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
687    
688  def _has_selected_layer(context):  def _has_selected_layer(context):
689      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
690      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
691    
692    def _can_remove_layer(context):
693        return context.mainwindow.CanRemoveLayer()
694    
695    def _has_tree_window_shown(context):
696        """Return true if the tree window is shown"""
697        return context.mainwindow.get_open_dialog("session_tree") is None
698    
699    def _has_visible_map(context):
700        """Return true iff theres a visible map in the mainwindow.
701    
702        A visible map is a map with at least one visible layer."""
703        map = context.mainwindow.Map()
704        if map is not None:
705            for layer in map.Layers():
706                if layer.Visible():
707                    return 1
708        return 0
709    
710    def _has_legend_shown(context):
711        """Return true if the legend window is shown"""
712        return context.mainwindow.FindRegisteredDock("legend") is None
713    
714    
715  # File menu  # File menu
716  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
717  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
718  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
719  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
720  _method_command("exit", "&Exit", "Exit")  _method_command("show_session_tree", _("Show Session &Tree"), "ShowSessionTree",
721                    sensitive = _has_tree_window_shown)
722    _method_command("exit", _("E&xit"), "Exit")
723    
724  # Help menu  # Help menu
725  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
726    
727    
728  # Map menu  # Map menu
729  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "Projection")
730    
731  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
732                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
733  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
734                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
735  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
736                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
737  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
738                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
739  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
740                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
741  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
742                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
743  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
744    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
745                  helptext = _("Add/Remove labels"), icon = "label",
746                  sensitive = _has_visible_map)
747    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
748                   helptext = _("Full Extent"), icon = "fullextent",
749                  sensitive = _has_visible_map)
750    _method_command("map_print", _("Prin&t"), "PrintMap",
751                    helptext = _("Print the map"))
752    
753  # Layer menu  # Layer menu
754  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_add", _("&Add Layer"), "AddLayer",
755                  helptext = "Add a new layer to active map")                  helptext = _("Add a new layer to active map"))
756  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
757                  helptext = "Remove selected layer(s)",                  helptext = _("Remove selected layer(s)"),
758                  sensitive = _has_selected_layer)                  sensitive = _can_remove_layer)
759  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_fill_color", _("&Fill Color"), "LayerFillColor",
760                  helptext = "Set the fill color of selected layer(s)",                  helptext = _("Set the fill color of selected layer(s)"),
761                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
762  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_transparent_fill", _("&Transparent Fill"),
763                  "LayerTransparentFill",                  "LayerTransparentFill",
764                  helptext = "Do not fill the selected layer(s)",                  helptext = _("Do not fill the selected layer(s)"),
765                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
766  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_outline_color", _("&Outline Color"), "LayerOutlineColor",
767                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Set the outline color of selected layer(s)"),
768                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
769  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_no_outline", _("&No Outline"), "LayerNoOutline",
770                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext= _("Do not draw the outline of the selected layer(s)"),
771                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
772  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
773                  helptext = "Raise selected layer(s)",                  helptext = _("Raise selected layer(s)"),
774                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
775  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
776                  helptext = "Lower selected layer(s)",                  helptext = _("Lower selected layer(s)"),
777                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
778  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_show", _("&Show"), "ShowLayer",
779                  helptext = "Make selected layer(s) visible",                  helptext = _("Make selected layer(s) visible"),
780                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
781  _method_command("layer_hide", "&Hide", "HideLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
782                  helptext = "Make selected layer(s) unvisible",                  helptext = _("Make selected layer(s) unvisible"),
783                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
784  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
785                  helptext = "Show the selected layer's table",                  helptext = _("Show the selected layer's table"),
786                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
787    _method_command("layer_classifier", _("Classify"), "Classify",
788                    sensitive = _has_selected_layer)
789    _method_command("show_legend", _("Show Legend"), "ShowLegend",
790                    sensitive = _has_legend_shown)
791    
792    # the menu structure
793    main_menu = Menu("<main>", "<main>",
794                     [Menu("file", _("&File"),
795                           ["new_session", "open_session", None,
796                            "save_session", "save_session_as", None,
797                            "show_session_tree", None,
798                            "show_legend", None,
799                            "exit"]),
800                      Menu("map", _("&Map"),
801                           ["layer_add", "layer_remove",
802                            None,
803                            "map_projection",
804                            None,
805                            "map_zoom_in_tool", "map_zoom_out_tool",
806                            "map_pan_tool", "map_identify_tool", "map_label_tool",
807                            None,
808                            "map_full_extent",
809                            None,
810                            "map_print"]),
811                      Menu("layer", _("&Layer"),
812                           ["layer_fill_color", "layer_transparent_fill",
813                            "layer_outline_color", "layer_no_outline",
814                            None,
815                            "layer_raise", "layer_lower",
816                            None,
817                            "layer_show", "layer_hide",
818                            None,
819                            "layer_show_table",
820                            None,
821                            "layer_classifier"]),
822                      Menu("help", _("&Help"),
823                           ["help_about"])])
824    
825    # the main toolbar
826    
827    main_toolbar = Menu("<toolbar>", "<toolbar>",
828                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
829                         "map_full_extent", None,
830                         "map_identify_tool", "map_label_tool"])
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