/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 33 by bh, Thu Sep 6 15:31:31 2001 UTC revision 713 by jonathan, Wed Apr 23 08:46:54 2003 UTC
# Line 1  Line 1 
1  # Copyright (C) 2001 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  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    from Thuban.UI.classifier 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
40    
41    from Thuban.UI.dock import DockFrame
42    
43    import resource
44    
45  import main  import projdialog
 from command import registry, Command  
 from messages import SELECTED_SHAPE  
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        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    
78          self.init_ids()          self.init_ids()
79    
80          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
81            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 ["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_add", "layer_remove",  
                      None,  
                      "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)  
82    
83          # toolbar          # Similarly, create the toolbar from main_toolbar
84          toolbar = self.CreateToolBar(wxTB_3DBUTTONS)          toolbar = self.build_toolbar(main_toolbar)
         for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool"]:  
             self.add_toolbar_command(toolbar, name)  
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)
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          EVT_CLOSE(self, self.OnClose)      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            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"""
136          self.current_id = 6000          self.current_id = 6000
137          self.id_to_name = {}          self.id_to_name = {}
138          self.name_to_id = {}          self.name_to_id = {}
139            self.events_bound = {}
140    
141      def get_id(self, name):      def get_id(self, name):
142          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 128  class MainWindow(wxFrame): Line 149  class MainWindow(wxFrame):
149              self.name_to_id[name] = ID              self.name_to_id[name] = ID
150              self.id_to_name[ID] = name              self.id_to_name[ID] = name
151          return ID          return ID
152            
153        def bind_command_events(self, command, ID):
154            """Bind the necessary events for the given command and ID"""
155            if not self.events_bound.has_key(ID):
156                # the events haven't been bound yet
157                EVT_MENU(self, ID, self.invoke_command)
158                if command.IsDynamic():
159                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
160    
161        def build_menu_bar(self, menudesc):
162            """Build and return the menu bar from the menu description"""
163            menu_bar = wxMenuBar()
164    
165            for item in menudesc.items:
166                # here the items must all be Menu instances themselves
167                menu_bar.Append(self.build_menu(item), item.title)
168    
169            return menu_bar
170    
171        def build_menu(self, menudesc):
172            """Return a wxMenu built from the menu description menudesc"""
173            wxmenu = wxMenu()
174            last = None
175            for item in menudesc.items:
176                if item is None:
177                    # a separator. Only add one if the last item was not a
178                    # separator
179                    if last is not None:
180                        wxmenu.AppendSeparator()
181                elif isinstance(item, Menu):
182                    # a submenu
183                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
184                else:
185                    # must the name the name of a command
186                    self.add_menu_command(wxmenu, item)
187                last = item
188            return wxmenu
189    
190        def build_toolbar(self, toolbardesc):
191            """Build and return the main toolbar window from a toolbar description
192    
193            The parameter should be an instance of the Menu class but it
194            should not contain submenus.
195            """
196            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
197    
198            # set the size of the tools' bitmaps. Not needed on wxGTK, but
199            # on Windows, although it doesn't work very well there. It seems
200            # that only 16x16 icons are really supported on windows.
201            # We probably shouldn't hardwire the bitmap size here.
202            toolbar.SetToolBitmapSize(wxSize(24, 24))
203    
204            for item in toolbardesc.items:
205                if item is None:
206                    toolbar.AddSeparator()
207                else:
208                    # assume it's a string.
209                    self.add_toolbar_command(toolbar, item)
210    
211            return toolbar
212    
213      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
214          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
215    
# Line 142  class MainWindow(wxFrame): Line 223  class MainWindow(wxFrame):
223                  ID = self.get_id(name)                  ID = self.get_id(name)
224                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
225                              command.IsCheckCommand())                              command.IsCheckCommand())
226                  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)  
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 161  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)
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 modla 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 203  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 215  class MainWindow(wxFrame): Line 311  class MainWindow(wxFrame):
311      def get_open_dialog(self, name):      def get_open_dialog(self, name):
312          return self.dialogs.get(name)          return self.dialogs.get(name)
313    
314        def view_position_changed(self):
315            pos = self.canvas.CurrentPosition()
316            if pos is not None:
317                text = "(%10.10g, %10.10g)" % pos
318            else:
319                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)
330    
331        def save_modified_session(self, can_veto = 1):
332            """If the current session has been modified, ask the user
333            whether to save it and do so if requested. Return the outcome of
334            the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the
335            dialog wasn't run return wxID_NO.
336    
337            If the can_veto parameter is true (default) the dialog includes
338            a cancel button, otherwise not.
339            """
340            if self.application.session.WasModified():
341                flags = wxYES_NO | wxICON_QUESTION
342                if can_veto:
343                    flags = flags | wxCANCEL
344                result = self.RunMessageBox(_("Exit"),
345                                            _("The session has been modified."
346                                             " Do you want to save it?"),
347                                            flags)
348                if result == wxID_YES:
349                    self.SaveSession()
350            else:
351                result = wxID_NO
352            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          session = Session("")          self.save_modified_session()
361          session.AddMap(Map(""))          self.prepare_new_session()
362          main.app.SetSession(session)          self.application.SetSession(create_empty_session())
363    
364      def OpenSession(self):      def OpenSession(self):
365          dlg = wxFileDialog(self, "Select a session file", ".", "",          self.save_modified_session()
366                             "*.session", wxOPEN)          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.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          main.app.SaveSession()          if self.application.session.filename == None:
374                self.SaveSessionAs()
375            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                             "*.session", wxOPEN)                             "*.thuban", wxOPEN)
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)
   
     def OnClose(self, event):  
         veto = 0  
         if main.app.session.WasModified():  
             flags = wxYES_NO | wxICON_QUESTION  
             if event.CanVeto():  
                 flags = flags | wxCANCEL  
             result = self.RunMessageBox("Exit",  
                                         ("The session has been modified."  
                                          " Do you want to save it?"),  
                                         flags)  
             if result == wxID_YES:  
                 self.SaveSession()  
             elif result == wxID_CANCEL:  
                 veto = 1  
388    
389          if veto:      def _OnClose(self, event):
390            result = self.save_modified_session(can_veto = event.CanVeto())
391            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            #self.legendPanel.SetMap(map)
405    
406        def Map(self):
407            """Return the map displayed by this mainwindow"""
408    
409            # sanity check
410            #assert(self.canvas.Map() is self.legendPanel.GetMap())
411    
412            return self.canvas.Map()
413    
414        def ToggleSessionTree(self):
415            """If the session tree is shown close it otherwise create a new tree"""
416            name = "session_tree"
417            dialog = self.get_open_dialog(name)
418            if dialog is None:
419                dialog = tree.SessionTreeView(self, self.application, name)
420                self.add_dialog(name, dialog)
421                dialog.Show(True)
422            else:
423                dialog.Close()
424    
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 session 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()
# Line 285  class MainWindow(wxFrame): Line 451  class MainWindow(wxFrame):
451                  map.AddLayer(layer)                  map.AddLayer(layer)
452              except IOError:              except IOError:
453                  # the layer couldn't be opened                  # the layer couldn't be opened
454                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
455                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
456              else:              else:
457                  if not has_layers:                  if not has_layers:
458                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
459                      # new map to the window                      # new map to the window
460                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
461          dlg.Destroy()          dlg.Destroy()
# Line 299  class MainWindow(wxFrame): Line 465  class MainWindow(wxFrame):
465          if layer is not None:          if layer is not None:
466              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
467    
468        def CanRemoveLayer(self):
469            """Return true if the currently selected layer can be deleted.
470    
471            If no layer is selected return False.
472    
473            The return value of this method determines whether the remove
474            layer command is sensitive in menu.
475            """
476            layer = self.current_layer()
477            if layer is not None:
478                return self.canvas.Map().CanRemoveLayer(layer)
479            return False
480    
481      def RaiseLayer(self):      def RaiseLayer(self):
482          layer = self.current_layer()          layer = self.current_layer()
483          if layer is not None:          if layer is not None:
484              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
485            
486      def LowerLayer(self):      def LowerLayer(self):
487          layer = self.current_layer()          layer = self.current_layer()
488          if layer is not None:          if layer is not None:
# Line 314  class MainWindow(wxFrame): Line 493  class MainWindow(wxFrame):
493    
494          If no layer is selected, return None          If no layer is selected, return None
495          """          """
496          tree = main.app.tree.tree          return self.canvas.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
497    
498      def has_selected_layer(self):      def has_selected_layer(self):
499          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
500          tree = main.app.tree.tree          return self.canvas.HasSelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         return isinstance(layer, Layer)  
501    
502      def choose_color(self):      def choose_color(self):
503          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 342  class MainWindow(wxFrame): Line 515  class MainWindow(wxFrame):
515          dlg.Destroy()          dlg.Destroy()
516          return color          return color
517    
     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)  
   
518      def HideLayer(self):      def HideLayer(self):
519          layer = self.current_layer()          layer = self.current_layer()
520          if layer is not None:          if layer is not None:
# Line 383  class MainWindow(wxFrame): Line 532  class MainWindow(wxFrame):
532              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
533              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
534              if dialog is None:              if dialog is None:
535                  dialog = tableview.TableFrame(self, main.app.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
536                                                "Table: %s" % layer.Title(),                                                 _("Table: %s") % layer.Title(),
537                                                layer, table)                                                     layer, table)
538                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
539                  dialog.Show(true)                  dialog.Show(true)
540              else:              else:
# Line 393  class MainWindow(wxFrame): Line 542  class MainWindow(wxFrame):
542                  pass                  pass
543    
544      def Projection(self):      def Projection(self):
545          map = self.canvas.Map()  
546          proj = map.projection          name = "projection"
547          if proj is None:          dialog = self.get_open_dialog(name)
548              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)  
549            if dialog is None:
550                map = self.canvas.Map()
551                dialog = projdialog.ProjFrame(self, name, map)
552                self.add_dialog(name, dialog)
553                dialog.Show()
554            dialog.Raise()
555    
556        def LayerEditProperties(self):
557    
558            #
559            # the menu option for this should only be available if there
560            # is a current layer, so we don't need to check if the
561            # current layer is None
562            #
563    
564            layer = self.current_layer()
565            self.OpenLayerProperties(layer)
566    
567        def OpenLayerProperties(self, layer, group = None):
568            name = "layer_properties" + str(id(layer))
569            dialog = self.get_open_dialog(name)
570    
571            if dialog is None:
572                dialog = Classifier(self, name, layer, group)
573                self.add_dialog(name, dialog)
574                dialog.Show()
575            dialog.Raise()
576    
577    
578        def ShowLegend(self):
579            if not self.LegendShown():
580                self.ToggleLegend()
581    
582        def ToggleLegend(self):
583            """Show the legend if it's not shown otherwise hide it again"""
584            name = "legend"
585            dialog = self.FindRegisteredDock(name)
586    
587            if dialog is None:
588                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
589                legend.LegendPanel(dialog, None, self)
590                dialog.Dock()
591                dialog.GetPanel().SetMap(self.Map())
592                dialog.Show()
593          else:          else:
594              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              dialog.Show(not dialog.IsShown())
595          if proj4Dlg.ShowModal() == wxID_OK:  
596              params = proj4Dlg.GetParams()      def LegendShown(self):
597              if params is not None:          """Return true iff the legend is currently open"""
598                  proj = Projection(params)          dialog = self.FindRegisteredDock("legend")
599              else:          return dialog is not None and dialog.IsShown()
                 proj = None  
             map.SetProjection(proj)  
         proj4Dlg.Destroy()  
600    
601      def ZoomInTool(self):      def ZoomInTool(self):
602          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 419  class MainWindow(wxFrame): Line 609  class MainWindow(wxFrame):
609    
610      def IdentifyTool(self):      def IdentifyTool(self):
611          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
612            self.identify_view_on_demand(None, None)
613    
614      def LabelTool(self):      def LabelTool(self):
615          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 429  class MainWindow(wxFrame): Line 620  class MainWindow(wxFrame):
620      def PrintMap(self):      def PrintMap(self):
621          self.canvas.Print()          self.canvas.Print()
622    
623      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
624            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
625                                    self.Map().Title())
626            if dlg.ShowModal() == wxID_OK:
627                title = dlg.GetValue()
628                if title != "":
629                    self.Map().SetTitle(title)
630                    self.__SetTitle(title)
631    
632            dlg.Destroy()
633    
634        def identify_view_on_demand(self, layer, shapes):
635          name = "identify_view"          name = "identify_view"
636          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
637              if not self.dialog_open(name):              if not self.dialog_open(name):
638                  dialog = identifyview.IdentifyView(self, main.app.interactor,                  dialog = identifyview.IdentifyView(self, name)
                                                    name)  
639                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
640                  dialog.Show(true)                  dialog.Show(True)
641              else:              else:
642                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
643                  pass                  pass
644    
645        def __SetTitle(self, title):
646            self.SetTitle("Thuban - " + title)
647    
648  #  #
649  # Define all the commands available in the main window  # Define all the commands available in the main window
650  #  #
# Line 448  class MainWindow(wxFrame): Line 652  class MainWindow(wxFrame):
652    
653  # Helper functions to define common command implementations  # Helper functions to define common command implementations
654  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
655      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
656      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
657    
658  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
659      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
660        """Add a command implemented by a method of the mainwindow object"""
661      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
662                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
663                             sensitive = sensitive, checked = checked))
664    
665    def make_check_current_tool(toolname):
666        """Return a function that tests if the currently active tool is toolname
667    
668        The returned function can be called with the context and returns
669        true iff the currently active tool's name is toolname. It's directly
670        usable as the 'checked' callback of a command.
671        """
672        def check_current_tool(context, name=toolname):
673            return context.mainwindow.canvas.CurrentTool() == name
674        return check_current_tool
675    
676  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
677                    icon = ""):                    icon = "", sensitive = None):
678      """Add a tool command"""      """Add a tool command"""
679      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
680          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
681      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
682                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
683    
684  def _has_selected_layer(context):  def _has_selected_layer(context):
685      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
686      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
687    
688    def _can_remove_layer(context):
689        return context.mainwindow.CanRemoveLayer()
690    
691    def _has_tree_window_shown(context):
692        """Return true if the tree window is shown"""
693        return context.mainwindow.SessionTreeShown()
694    
695    def _has_visible_map(context):
696        """Return true iff theres a visible map in the mainwindow.
697    
698        A visible map is a map with at least one visible layer."""
699        map = context.mainwindow.Map()
700        if map is not None:
701            for layer in map.Layers():
702                if layer.Visible():
703                    return 1
704        return 0
705    
706    def _has_legend_shown(context):
707        """Return true if the legend window is shown"""
708        return context.mainwindow.LegendShown()
709    
710    
711  # File menu  # File menu
712  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
713  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
714  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
715  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
716  _method_command("exit", "&Exit", "Exit")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
717                    checked = _has_tree_window_shown)
718    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
719                    checked = _has_legend_shown)
720    _method_command("exit", _("E&xit"), "Exit")
721    
722  # Help menu  # Help menu
723  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
724    
725    
726  # Map menu  # Map menu
727  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "Projection")
728    
729  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
730                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
731  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
732                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
733  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
734                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
735  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
736                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
737  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
738                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
739  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
740  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
741                  sensitive = _has_visible_map)
742    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
743                  helptext = _("Add/Remove labels"), icon = "label",
744                  sensitive = _has_visible_map)
745    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
746                   helptext = _("Full Extent"), icon = "fullextent",
747                  sensitive = _has_visible_map)
748    _method_command("map_print", _("Prin&t"), "PrintMap",
749                    helptext = _("Print the map"))
750    _method_command("map_rename", _("&Rename"), "RenameMap",
751                    helptext = _("Rename the map"))
752    
753  # Layer menu  # Layer menu
754  _method_command("layer_add", "&Add", "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", "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_raise", _("&Raise"), "RaiseLayer",
760                  helptext = "Set the fill color of selected layer(s)",                  helptext = _("Raise selected layer(s)"),
                 sensitive = _has_selected_layer)  
 _method_command("layer_transparent_fill", "&Transparent Fill",  
                 "LayerTransparentFill",  
                 helptext = "Do not fill the selected layer(s)",  
761                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
762  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
763                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer(s)"),
764                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
765  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
766                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
767                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
768  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
769                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
770                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
771  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
772                  helptext = "Lower selected layer(s)",                  helptext = _("Show the selected layer's table"),
773                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
774  _method_command("layer_show", "&Show", "ShowLayer",  _method_command("layer_properties", _("Properties"), "LayerEditProperties",
                 helptext = "Make selected layer(s) visible",  
                 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",  
775                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
776    
777    # the menu structure
778    main_menu = Menu("<main>", "<main>",
779                     [Menu("file", _("&File"),
780                           ["new_session", "open_session", None,
781                            "save_session", "save_session_as", None,
782                            "toggle_session_tree", None,
783                            "exit"]),
784                      Menu("map", _("&Map"),
785                           ["layer_add", "layer_remove",
786                            None,
787                            "map_projection",
788                            None,
789                            "map_zoom_in_tool", "map_zoom_out_tool",
790                            "map_pan_tool", "map_identify_tool", "map_label_tool",
791                            None,
792                            "map_full_extent",
793                            None,
794                            "toggle_legend",
795                            None,
796                            "map_print",
797                            None,
798                            "map_rename"]),
799                      Menu("layer", _("&Layer"),
800                            ["layer_raise", "layer_lower",
801                            None,
802                            "layer_show", "layer_hide",
803                            None,
804                            "layer_show_table",
805                            None,
806                            "layer_properties"]),
807                      Menu("help", _("&Help"),
808                           ["help_about"])])
809    
810    # the main toolbar
811    
812    main_toolbar = Menu("<toolbar>", "<toolbar>",
813                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
814                         "map_full_extent", None,
815                         "map_identify_tool", "map_label_tool"])
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