/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 20 by bh, Tue Sep 4 16:44:31 2001 UTC revision 729 by jonathan, Thu Apr 24 16:06:51 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  
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):      # 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)          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          EVT_CLOSE(self, self.OnClose)          self.SetMainWindow(self.canvas)
96    
97            self.SetAutoLayout(True)
98    
99            self.init_dialogs()
100    
101            EVT_CLOSE(self, self._OnClose)
102    
103        def Subscribe(self, channel, *args):
104            """Subscribe a function to a message channel.
105    
106            If channel is one of the delegated messages call the appropriate
107            object's Subscribe method. Otherwise do nothing.
108            """
109            if channel in self.delegated_messages:
110                object = getattr(self, self.delegated_messages[channel])
111                object.Subscribe(channel, *args)
112            else:
113                print "Trying to subscribe to unsupported channel %s" % channel
114    
115        def Unsubscribe(self, channel, *args):
116            """Unsubscribe a function from a message channel.
117    
118            If channel is one of the delegated messages call the appropriate
119            object's Unsubscribe method. Otherwise do nothing.
120            """
121            if channel in self.delegated_messages:
122                object = getattr(self, self.delegated_messages[channel])
123                object.Unsubscribe(channel, *args)
124    
125        def __getattr__(self, attr):
126            """If attr is one of the delegated methods return that method
127    
128            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 123  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 137  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 156  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
292    
293        def init_dialogs(self):
294            """Initialize the dialog handling"""
295            # The mainwindow maintains a dict mapping names to open
296            # non-modal dialogs. The dialogs are put into this dict when
297            # they're created and removed when they're closed
298            self.dialogs = {}
299    
300        def add_dialog(self, name, dialog):
301            if self.dialogs.has_key(name):
302                raise RuntimeError(_("The Dialog named %s is already open") % name)
303            self.dialogs[name] = dialog
304    
305        def dialog_open(self, name):
306            return self.dialogs.has_key(name)
307    
308        def remove_dialog(self, name):
309            del self.dialogs[name]
310    
311        def get_open_dialog(self, name):
312            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()
446              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
447              layer = Layer(title, filename)              store = self.application.Session().OpenShapefile(filename)
448                layer = Layer(title, store)
449              map = self.canvas.Map()              map = self.canvas.Map()
450              has_layers = map.HasLayers()              has_layers = map.HasLayers()
451              try:              try:
452                  map.AddLayer(layer)                  map.AddLayer(layer)
453              except IOError:              except IOError:
454                  # the layer couldn't be opened                  # the layer couldn't be opened
455                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
456                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
457              else:              else:
458                  if not has_layers:                  if not has_layers:
459                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
460                      # new map to the window                      # new map to the window
461                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
462          dlg.Destroy()          dlg.Destroy()
# Line 273  class MainWindow(wxFrame): Line 466  class MainWindow(wxFrame):
466          if layer is not None:          if layer is not None:
467              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
468    
469        def CanRemoveLayer(self):
470            """Return true if the currently selected layer can be deleted.
471    
472            If no layer is selected return False.
473    
474            The return value of this method determines whether the remove
475            layer command is sensitive in menu.
476            """
477            layer = self.current_layer()
478            if layer is not None:
479                return self.canvas.Map().CanRemoveLayer(layer)
480            return False
481    
482      def RaiseLayer(self):      def RaiseLayer(self):
483          layer = self.current_layer()          layer = self.current_layer()
484          if layer is not None:          if layer is not None:
485              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
486            
487      def LowerLayer(self):      def LowerLayer(self):
488          layer = self.current_layer()          layer = self.current_layer()
489          if layer is not None:          if layer is not None:
# Line 288  class MainWindow(wxFrame): Line 494  class MainWindow(wxFrame):
494    
495          If no layer is selected, return None          If no layer is selected, return None
496          """          """
497          tree = main.app.tree.tree          return self.canvas.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
498    
499      def has_selected_layer(self):      def has_selected_layer(self):
500          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
501          tree = main.app.tree.tree          return self.canvas.HasSelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         return isinstance(layer, Layer)  
502    
503      def choose_color(self):      def choose_color(self):
504          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 316  class MainWindow(wxFrame): Line 516  class MainWindow(wxFrame):
516          dlg.Destroy()          dlg.Destroy()
517          return color          return color
518    
     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)  
   
519      def HideLayer(self):      def HideLayer(self):
520          layer = self.current_layer()          layer = self.current_layer()
521          if layer is not None:          if layer is not None:
# Line 353  class MainWindow(wxFrame): Line 529  class MainWindow(wxFrame):
529      def LayerShowTable(self):      def LayerShowTable(self):
530          layer = self.current_layer()          layer = self.current_layer()
531          if layer is not None:          if layer is not None:
532              tv = tableview.TableFrame(self, layer.table)              table = layer.table
533              tv.Show(true)              name = "table_view" + str(id(table))
534                dialog = self.get_open_dialog(name)
535                if dialog is None:
536                    dialog = tableview.LayerTableFrame(self, name,
537                                                   _("Table: %s") % layer.Title(),
538                                                       layer, table)
539                    self.add_dialog(name, dialog)
540                    dialog.Show(true)
541                else:
542                    # FIXME: bring dialog to front here
543                    pass
544    
545        def MapProjection(self):
546    
547            name = "map_projection"
548            dialog = self.get_open_dialog(name)
549    
550            if dialog is None:
551                map = self.canvas.Map()
552                dialog = projdialog.ProjFrame(self, name, map)
553                self.add_dialog(name, dialog)
554                dialog.Show()
555            dialog.Raise()
556    
557        def LayerProjection(self):
558    
559      def Projection(self):          layer = self.current_layer()
560          map = self.canvas.Map()  
561          proj = map.projection          name = "layer_projection" + str(id(layer))
562          if proj is None:          dialog = self.get_open_dialog(name)
563              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)  
564            if dialog is None:
565                map = self.canvas.Map()
566                dialog = projdialog.ProjFrame(self, name, layer)
567                self.add_dialog(name, dialog)
568                dialog.Show()
569            dialog.Raise()
570    
571        def LayerEditProperties(self):
572    
573            #
574            # the menu option for this should only be available if there
575            # is a current layer, so we don't need to check if the
576            # current layer is None
577            #
578    
579            layer = self.current_layer()
580            self.OpenLayerProperties(layer)
581    
582        def OpenLayerProperties(self, layer, group = None):
583            name = "layer_properties" + str(id(layer))
584            dialog = self.get_open_dialog(name)
585    
586            if dialog is None:
587                dialog = Classifier(self, name, layer, group)
588                self.add_dialog(name, dialog)
589                dialog.Show()
590            dialog.Raise()
591    
592    
593        def ShowLegend(self):
594            if not self.LegendShown():
595                self.ToggleLegend()
596    
597        def ToggleLegend(self):
598            """Show the legend if it's not shown otherwise hide it again"""
599            name = "legend"
600            dialog = self.FindRegisteredDock(name)
601    
602            if dialog is None:
603                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
604                legend.LegendPanel(dialog, None, self)
605                dialog.Dock()
606                dialog.GetPanel().SetMap(self.Map())
607                dialog.Show()
608          else:          else:
609              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              dialog.Show(not dialog.IsShown())
610          if proj4Dlg.ShowModal() == wxID_OK:  
611              params = proj4Dlg.GetParams()      def LegendShown(self):
612              if params is not None:          """Return true iff the legend is currently open"""
613                  proj = Projection(params)          dialog = self.FindRegisteredDock("legend")
614              else:          return dialog is not None and dialog.IsShown()
                 proj = None  
             map.SetProjection(proj)  
         proj4Dlg.Destroy()  
615    
616      def ZoomInTool(self):      def ZoomInTool(self):
617          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 382  class MainWindow(wxFrame): Line 623  class MainWindow(wxFrame):
623          self.canvas.PanTool()          self.canvas.PanTool()
624    
625      def IdentifyTool(self):      def IdentifyTool(self):
         if self.identify_view is None:  
             self.identify_view = identifyview.IdentifyView(self, main.app)  
             self.identify_view.Show(true)  
626          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
627            self.identify_view_on_demand(None, None)
628    
629      def LabelTool(self):      def LabelTool(self):
630          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 396  class MainWindow(wxFrame): Line 635  class MainWindow(wxFrame):
635      def PrintMap(self):      def PrintMap(self):
636          self.canvas.Print()          self.canvas.Print()
637    
638        def RenameMap(self):
639            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
640                                    self.Map().Title())
641            if dlg.ShowModal() == wxID_OK:
642                title = dlg.GetValue()
643                if title != "":
644                    self.Map().SetTitle(title)
645                    self.__SetTitle(title)
646    
647            dlg.Destroy()
648    
649        def identify_view_on_demand(self, layer, shapes):
650            name = "identify_view"
651            if self.canvas.CurrentTool() == "IdentifyTool":
652                if not self.dialog_open(name):
653                    dialog = identifyview.IdentifyView(self, name)
654                    self.add_dialog(name, dialog)
655                    dialog.Show(True)
656                else:
657                    # FIXME: bring dialog to front?
658                    pass
659    
660        def __SetTitle(self, title):
661            self.SetTitle("Thuban - " + title)
662    
663  #  #
664  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 404  class MainWindow(wxFrame): Line 667  class MainWindow(wxFrame):
667    
668  # Helper functions to define common command implementations  # Helper functions to define common command implementations
669  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
670      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
671      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
672    
673  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
674      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
675        """Add a command implemented by a method of the mainwindow object"""
676      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
677                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
678                             sensitive = sensitive, checked = checked))
679    
680    def make_check_current_tool(toolname):
681        """Return a function that tests if the currently active tool is toolname
682    
683        The returned function can be called with the context and returns
684        true iff the currently active tool's name is toolname. It's directly
685        usable as the 'checked' callback of a command.
686        """
687        def check_current_tool(context, name=toolname):
688            return context.mainwindow.canvas.CurrentTool() == name
689        return check_current_tool
690    
691  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
692                    icon = ""):                    icon = "", sensitive = None):
693      """Add a tool command"""      """Add a tool command"""
694      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
695          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
696      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
697                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
698    
699  def _has_selected_layer(context):  def _has_selected_layer(context):
700      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
701      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
702    
703    def _can_remove_layer(context):
704        return context.mainwindow.CanRemoveLayer()
705    
706    def _has_tree_window_shown(context):
707        """Return true if the tree window is shown"""
708        return context.mainwindow.SessionTreeShown()
709    
710    def _has_visible_map(context):
711        """Return true iff theres a visible map in the mainwindow.
712    
713        A visible map is a map with at least one visible layer."""
714        map = context.mainwindow.Map()
715        if map is not None:
716            for layer in map.Layers():
717                if layer.Visible():
718                    return 1
719        return 0
720    
721    def _has_legend_shown(context):
722        """Return true if the legend window is shown"""
723        return context.mainwindow.LegendShown()
724    
725    
726  # File menu  # File menu
727  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
728  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
729  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
730  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
731  _method_command("exit", "&Exit", "Exit")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
732                    checked = _has_tree_window_shown)
733    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
734                    checked = _has_legend_shown)
735    _method_command("exit", _("E&xit"), "Exit")
736    
737  # Help menu  # Help menu
738  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
739    
740    
741  # Map menu  # Map menu
742  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "MapProjection")
743    
744  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
745                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
746  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
747                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
748  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
749                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
750  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
751                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
752  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
753                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
754  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
755  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
756                  sensitive = _has_visible_map)
757    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
758                  helptext = _("Add/Remove labels"), icon = "label",
759                  sensitive = _has_visible_map)
760    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
761                   helptext = _("Full Extent"), icon = "fullextent",
762                  sensitive = _has_visible_map)
763    _method_command("map_print", _("Prin&t"), "PrintMap",
764                    helptext = _("Print the map"))
765    _method_command("map_rename", _("&Rename"), "RenameMap",
766                    helptext = _("Rename the map"))
767    _method_command("layer_add", _("&Add Layer"), "AddLayer",
768                    helptext = _("Add a new layer to active map"))
769    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
770                    helptext = _("Remove selected layer(s)"),
771                    sensitive = _can_remove_layer)
772    
773  # Layer menu  # Layer menu
774  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_projection", _("Pro&jection"), "LayerProjection",
                 helptext = "Add a new layer to active map")  
 _method_command("layer_remove", "&Remove", "RemoveLayer",  
                 helptext = "Remove selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  
                 helptext = "Set the fill color of selected layer(s)",  
775                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
776  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
777                  "LayerTransparentFill",                  helptext = _("Raise selected layer(s)"),
                 helptext = "Do not fill the selected layer(s)",  
778                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
779  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
780                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer(s)"),
781                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
782  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
783                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
784                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
785  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
786                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
787                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
788  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
789                  helptext = "Lower selected layer(s)",                  helptext = _("Show the selected layer's table"),
790                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
791  _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",  
792                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
793    
794    # the menu structure
795    main_menu = Menu("<main>", "<main>",
796                     [Menu("file", _("&File"),
797                           ["new_session", "open_session", None,
798                            "save_session", "save_session_as", None,
799                            "toggle_session_tree", None,
800                            "exit"]),
801                      Menu("map", _("&Map"),
802                           ["layer_add", "layer_remove",
803                            None,
804                            "map_projection",
805                            None,
806                            "map_zoom_in_tool", "map_zoom_out_tool",
807                            "map_pan_tool", "map_identify_tool", "map_label_tool",
808                            None,
809                            "map_full_extent",
810                            None,
811                            "toggle_legend",
812                            None,
813                            "map_print",
814                            None,
815                            "map_rename"]),
816                      Menu("layer", _("&Layer"),
817                            ["layer_raise", "layer_lower",
818                            None,
819                            "layer_show", "layer_hide",
820                            None,
821                            "layer_show_table",
822                            None,
823                            "layer_properties",
824                            None,
825                            "layer_projection"]),
826                      Menu("help", _("&Help"),
827                           ["help_about"])])
828    
829    # the main toolbar
830    
831    main_toolbar = Menu("<toolbar>", "<toolbar>",
832                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
833                         "map_full_extent", None,
834                         "map_identify_tool", "map_label_tool"])
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