/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 119 by frank, Fri Apr 26 09:30:41 2002 UTC revision 768 by jonathan, Tue Apr 29 13:03:59 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, create_empty_session  from Thuban import _
24  from Thuban.Model.map import Map  from Thuban.Model.session import create_empty_session
25  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
26  from Thuban.Model.color import Color  from Thuban.Model.color import Color
27  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
# Line 27  import view Line 30  import view
30  import tree  import tree
31  import proj4dialog  import proj4dialog
32  import tableview, identifyview  import tableview, identifyview
33    from Thuban.UI.classifier import Classifier
34    import legend
35    from menu import Menu
36    
37  import main  from context import Context
38  from command import registry, Command  from command import registry, Command, ToolCommand
39  from messages import SELECTED_SHAPE  from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION
40    
41    from Thuban.UI.dock import DockFrame
42    
43  # the directory where the toolbar icons are stored  import resource
 bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  
 bitmapext = ".xpm"  
44    
45    import projdialog
46    
 class MainWindow(wxFrame):  
47    
     def __init__(self, parent, ID, interactor):  
         wxFrame.__init__(self, parent, ID, 'Thuban',  
                          wxDefaultPosition, wxSize(400, 300))  
48    
49          self.interactor = interactor  class MainWindow(DockFrame):
50    
51          self.CreateStatusBar()      # Some messages that can be subscribed/unsubscribed directly through
52          self.SetStatusText("This is the wxPython-based "      # the MapCanvas come in fact from other objects. This is a map to
53                        "Graphical User Interface for exploring geographic data")      # 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          self.identify_view = None      # Methods delegated to some instance variables. The delegation is
60        # implemented in the __getattr__ method.
61        delegated_methods = {"SelectLayer": "canvas",
62                             "SelectShapes": "canvas",
63                             }
64    
65          self.init_ids()      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          menuBar = wxMenuBar()          self.application = application
71    
72          menu = wxMenu()          self.CreateStatusBar()
73          menuBar.Append(menu, "&File");          if initial_message:
74          for name in ["new_session", "open_session", None,              self.SetStatusText(initial_message)
                      "save_session", "save_session_as", None,  
                      "exit"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Map");  
         for name in ["layer_add", "layer_remove",  
                      None,  
                      "map_projection",  
                      None,  
                      "map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool",  
                      None,  
                      "map_full_extent",  
                      None,  
                      "map_print"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Layer");  
         for name in ["layer_fill_color", "layer_transparent_fill",  
                      "layer_ourline_color", "layer_no_outline",  
                      None,  
                      "layer_raise", "layer_lower",  
                      None,  
                      "layer_show", "layer_hide",  
                      None,  
                      "layer_show_table"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Help");  
         self.add_menu_command(menu, "help_about")  
75    
76          self.SetMenuBar(menuBar)          self.identify_view = None
77    
78          # toolbar          self.init_ids()
         toolbar = self.CreateToolBar(wxTB_3DBUTTONS)  
79    
80          # set the size of the tools' bitmaps. Not needed on wxGTK, but          # creat the menubar from the main_menu description
81          # on Windows. We probably shouldn't hardwire the bitmap size          self.SetMenuBar(self.build_menu_bar(main_menu))
         # here  
         toolbar.SetToolBitmapSize(wxSize(24, 24))  
82    
83          for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",          # Similarly, create the toolbar from main_toolbar
84                       "map_identify_tool", "map_label_tool", "map_full_extent"]:          toolbar = self.build_toolbar(main_toolbar)
             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        def Subscribe(self, channel, *args):
104            """Subscribe a function to a message channel.
105    
106            If channel is one of the delegated messages call the appropriate
107            object's Subscribe method. Otherwise do nothing.
108            """
109            if channel in self.delegated_messages:
110                object = getattr(self, self.delegated_messages[channel])
111                object.Subscribe(channel, *args)
112            else:
113                print "Trying to subscribe to unsupported channel %s" % channel
114    
115        def Unsubscribe(self, channel, *args):
116            """Unsubscribe a function from a message channel.
117    
118            If channel is one of the delegated messages call the appropriate
119            object's Unsubscribe method. Otherwise do nothing.
120            """
121            if channel in self.delegated_messages:
122                object = getattr(self, self.delegated_messages[channel])
123                object.Unsubscribe(channel, *args)
124    
125        def __getattr__(self, attr):
126            """If attr is one of the delegated methods return that method
127    
128          EVT_CLOSE(self, self.OnClose)          Otherwise raise AttributeError.
129            """
130            if attr in self.delegated_methods:
131                return getattr(getattr(self, self.delegated_methods[attr]), attr)
132            raise AttributeError(attr)
133    
134      def init_ids(self):      def init_ids(self):
135          """Initialize the ids"""          """Initialize the ids"""
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 136  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 150  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 169  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 211  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 223  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):      def save_modified_session(self, can_veto = 1):
332          """If the current session has been modified, ask the user          """If the current session has been modified, ask the user
333          whether to save it and do so if requested. Return the outcome of          whether to save it and do so if requested. Return the outcome of
# Line 232  class MainWindow(wxFrame): Line 337  class MainWindow(wxFrame):
337          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
338          a cancel button, otherwise not.          a cancel button, otherwise not.
339          """          """
340          if main.app.session.WasModified():          if self.application.session.WasModified():
341              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
342              if can_veto:              if can_veto:
343                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
344              result = self.RunMessageBox("Exit",              result = self.RunMessageBox(_("Exit"),
345                                          ("The session has been modified."                                          _("The session has been modified."
346                                           " Do you want to save it?"),                                           " Do you want to save it?"),
347                                          flags)                                          flags)
348              if result == wxID_YES:              if result == wxID_YES:
# Line 246  class MainWindow(wxFrame): Line 351  class MainWindow(wxFrame):
351              result = wxID_NO              result = wxID_NO
352          return result          return result
353    
354        def prepare_new_session(self):
355            for d in self.dialogs.values():
356                if not isinstance(d, tree.SessionTreeView):
357                    d.Close()
358    
359      def NewSession(self):      def NewSession(self):
360          self.save_modified_session()          self.save_modified_session()
361          main.app.SetSession(create_empty_session())          self.prepare_new_session()
362            self.application.SetSession(create_empty_session())
363    
364      def OpenSession(self):      def OpenSession(self):
365          self.save_modified_session()          self.save_modified_session()
366          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.thuban", wxOPEN)
                            "*.session", wxOPEN)  
367          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
368              main.app.OpenSession(dlg.GetPath())              self.prepare_new_session()
369                self.application.OpenSession(dlg.GetPath())
370          dlg.Destroy()          dlg.Destroy()
371    
372      def SaveSession(self):      def SaveSession(self):
373          if main.app.session.filename == None:          if self.application.session.filename == None:
374              self.SaveSessionAs()              self.SaveSessionAs()
375          main.app.SaveSession()          else:
376                self.application.SaveSession()
377    
378      def SaveSessionAs(self):      def SaveSessionAs(self):
379          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
380                             "*.session", wxOPEN)                             "*.thuban", wxSAVE|wxOVERWRITE_PROMPT)
381          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
382              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
383              main.app.SaveSession()              self.application.SaveSession()
384          dlg.Destroy()          dlg.Destroy()
385    
386      def Exit(self):      def Exit(self):
387          self.Close(false)          self.Close(False)
388    
389      def OnClose(self, event):      def _OnClose(self, event):
390          result = self.save_modified_session(can_veto = event.CanVeto())          result = self.save_modified_session(can_veto = event.CanVeto())
391          if result == wxID_CANCEL:          if result == wxID_CANCEL:
392              event.Veto()              event.Veto()
393          else:          else:
394                # FIXME: it would be better to tie the unsubscription to
395                # wx's destroy event, but that isn't implemented for wxGTK
396                # yet.
397                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
398                DockFrame._OnClose(self, event)
399              self.Destroy()              self.Destroy()
400    
401      def SetMap(self, map):      def SetMap(self, map):
402          self.canvas.SetMap(map)          self.canvas.SetMap(map)
403            self.__SetTitle(map.Title())
404    
405      def ShowSessionTree(self):          dialog = self.FindRegisteredDock("legend")
406            if dialog is not None:
407                dialog.GetPanel().SetMap(self.Map())
408    
409        def Map(self):
410            """Return the map displayed by this mainwindow"""
411    
412            return self.canvas.Map()
413    
414        def ToggleSessionTree(self):
415            """If the session tree is shown close it otherwise create a new tree"""
416          name = "session_tree"          name = "session_tree"
417          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
418          if dialog is None:          if dialog is None:
419              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
420              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
421              dialog.Show(true)              dialog.Show(True)
422          else:          else:
423              # FIXME: bring dialog to front here              dialog.Close()
424              pass  
425        def SessionTreeShown(self):
426            """Return true iff the session tree is currently shown"""
427            return self.get_open_dialog("session_tree") is not None
428    
429      def About(self):      def About(self):
430          self.RunMessageBox("About",          self.RunMessageBox(_("About"),
431                             ("Thuban is a program for\n"                             _("Thuban v%s\n"
432                                #"Build Date: %s\n"
433                                "\n"
434                                "Thuban is a program for\n"
435                              "exploring geographic data.\n"                              "exploring geographic data.\n"
436                              "Copyright (C) 2001 Intevation GmbH.\n"                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
437                              "Thuban is licensed under the GPL"),                              "Thuban is licensed under the GNU GPL"
438                               % __ThubanVersion__), #__BuildDate__)),
439                             wxOK | wxICON_INFORMATION)                             wxOK | wxICON_INFORMATION)
440    
441      def AddLayer(self):      def AddLayer(self):
442          dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*",          dlg = wxFileDialog(self, _("Select a data file"), ".", "", "*.*",
443                             wxOPEN)                             wxOPEN)
444          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
445              filename = dlg.GetPath()              filename = dlg.GetPath()
446              title = os.path.splitext(os.path.basename(filename))[0]              title = os.path.splitext(os.path.basename(filename))[0]
447              layer = Layer(title, filename)              store = self.application.Session().OpenShapefile(filename)
448                layer = Layer(title, store)
449              map = self.canvas.Map()              map = self.canvas.Map()
450              has_layers = map.HasLayers()              has_layers = map.HasLayers()
451              try:              try:
452                  map.AddLayer(layer)                  map.AddLayer(layer)
453              except IOError:              except IOError:
454                  # the layer couldn't be opened                  # the layer couldn't be opened
455                  self.RunMessageBox("Add Layer",                  self.RunMessageBox(_("Add Layer"),
456                                     "Can't open the file '%s'." % filename)                                     _("Can't open the file '%s'.") % filename)
457              else:              else:
458                  if not has_layers:                  if not has_layers:
459                      # if we're adding a layer to an empty map, for the                      # if we're adding a layer to an empty map, fit the
460                      # new map to the window                      # new map to the window
461                      self.canvas.FitMapToWindow()                      self.canvas.FitMapToWindow()
462          dlg.Destroy()          dlg.Destroy()
# Line 330  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 345  class MainWindow(wxFrame): Line 494  class MainWindow(wxFrame):
494    
495          If no layer is selected, return None          If no layer is selected, return None
496          """          """
497          return self.interactor.SelectedLayer()          return self.canvas.SelectedLayer()
498    
499      def has_selected_layer(self):      def has_selected_layer(self):
500          """Return true if a layer is currently selected"""          """Return true if a layer is currently selected"""
501          return self.interactor.HasSelectedLayer()          return self.canvas.HasSelectedLayer()
502    
503      def 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 367  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 408  class MainWindow(wxFrame): Line 533  class MainWindow(wxFrame):
533              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
534              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
535              if dialog is None:              if dialog is None:
536                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, name,
537                                                "Table: %s" % layer.Title(),                                                 _("Table: %s") % layer.Title(),
538                                                layer, table)                                                     layer, table)
539                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
540                  dialog.Show(true)                  dialog.Show(true)
541              else:              else:
542                  # FIXME: bring dialog to front here                  # FIXME: bring dialog to front here
543                  pass                  pass
544    
545      def Projection(self):      def MapProjection(self):
546          map = self.canvas.Map()  
547          proj = map.projection          name = "map_projection"
548          if proj is None:          dialog = self.get_open_dialog(name)
549              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox())  
550            if dialog is None:
551                map = self.canvas.Map()
552                dialog = projdialog.ProjFrame(self, name,
553                         _("Map Projection: %s") % map.Title(), map)
554                self.add_dialog(name, dialog)
555                dialog.Show()
556            dialog.Raise()
557    
558        def LayerProjection(self):
559    
560            layer = self.current_layer()
561    
562            name = "layer_projection" + str(id(layer))
563            dialog = self.get_open_dialog(name)
564    
565            if dialog is None:
566                map = self.canvas.Map()
567                dialog = projdialog.ProjFrame(self, name,
568                         _("Layer Projection: %s") % layer.Title(), layer)
569                self.add_dialog(name, dialog)
570                dialog.Show()
571            dialog.Raise()
572    
573        def LayerEditProperties(self):
574    
575            #
576            # the menu option for this should only be available if there
577            # is a current layer, so we don't need to check if the
578            # current layer is None
579            #
580    
581            layer = self.current_layer()
582            self.OpenLayerProperties(layer)
583    
584        def OpenLayerProperties(self, layer, group = None):
585            name = "layer_properties" + str(id(layer))
586            dialog = self.get_open_dialog(name)
587    
588            if dialog is None:
589                dialog = Classifier(self, name, layer, group)
590                self.add_dialog(name, dialog)
591                dialog.Show()
592            dialog.Raise()
593    
594    
595        def ShowLegend(self):
596            if not self.LegendShown():
597                self.ToggleLegend()
598    
599        def ToggleLegend(self):
600            """Show the legend if it's not shown otherwise hide it again"""
601            name = "legend"
602            dialog = self.FindRegisteredDock(name)
603    
604            if dialog is None:
605                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
606                legend.LegendPanel(dialog, None, self)
607                dialog.Dock()
608                dialog.GetPanel().SetMap(self.Map())
609                dialog.Show()
610          else:          else:
611              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,              dialog.Show(not dialog.IsShown())
612                                                 map.BoundingBox())  
613          if proj4Dlg.ShowModal() == wxID_OK:      def LegendShown(self):
614              params = proj4Dlg.GetParams()          """Return true iff the legend is currently open"""
615              if params is not None:          dialog = self.FindRegisteredDock("legend")
616                  proj = Projection(params)          return dialog is not None and dialog.IsShown()
             else:  
                 proj = None  
             map.SetProjection(proj)  
         proj4Dlg.Destroy()  
617    
618      def ZoomInTool(self):      def ZoomInTool(self):
619          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 456  class MainWindow(wxFrame): Line 637  class MainWindow(wxFrame):
637      def PrintMap(self):      def PrintMap(self):
638          self.canvas.Print()          self.canvas.Print()
639    
640      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
641            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
642                                    self.Map().Title())
643            if dlg.ShowModal() == wxID_OK:
644                title = dlg.GetValue()
645                if title != "":
646                    self.Map().SetTitle(title)
647                    self.__SetTitle(title)
648    
649            dlg.Destroy()
650    
651        def identify_view_on_demand(self, layer, shapes):
652          name = "identify_view"          name = "identify_view"
653          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
654              if not self.dialog_open(name):              if not self.dialog_open(name):
655                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
656                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
657                  dialog.Show(true)                  dialog.Show(True)
658              else:              else:
659                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
660                  pass                  pass
661    
662        def __SetTitle(self, title):
663            self.SetTitle("Thuban - " + title)
664    
665  #  #
666  # Define all the commands available in the main window  # Define all the commands available in the main window
667  #  #
# Line 474  class MainWindow(wxFrame): Line 669  class MainWindow(wxFrame):
669    
670  # Helper functions to define common command implementations  # Helper functions to define common command implementations
671  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
672      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
673      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
674    
675  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
676                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
677      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
678      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
679                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
680                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
681    
682    def make_check_current_tool(toolname):
683        """Return a function that tests if the currently active tool is toolname
684    
685        The returned function can be called with the context and returns
686        true iff the currently active tool's name is toolname. It's directly
687        usable as the 'checked' callback of a command.
688        """
689        def check_current_tool(context, name=toolname):
690            return context.mainwindow.canvas.CurrentTool() == name
691        return check_current_tool
692    
693  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
694                    icon = ""):                    icon = "", sensitive = None):
695      """Add a tool command"""      """Add a tool command"""
696      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
697          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
698      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
699                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
700    
701  def _has_selected_layer(context):  def _has_selected_layer(context):
702      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
703      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
704    
705    def _can_remove_layer(context):
706        return context.mainwindow.CanRemoveLayer()
707    
708    def _has_tree_window_shown(context):
709        """Return true if the tree window is shown"""
710        return context.mainwindow.SessionTreeShown()
711    
712    def _has_visible_map(context):
713        """Return true iff theres a visible map in the mainwindow.
714    
715        A visible map is a map with at least one visible layer."""
716        map = context.mainwindow.Map()
717        if map is not None:
718            for layer in map.Layers():
719                if layer.Visible():
720                    return 1
721        return 0
722    
723    def _has_legend_shown(context):
724        """Return true if the legend window is shown"""
725        return context.mainwindow.LegendShown()
726    
727    
728  # File menu  # File menu
729  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
730  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
731  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
732  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
733  _method_command("exit", "&Exit", "Exit")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
734                    checked = _has_tree_window_shown)
735    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
736                    checked = _has_legend_shown)
737    _method_command("exit", _("E&xit"), "Exit")
738    
739  # Help menu  # Help menu
740  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
741    
742    
743  # Map menu  # Map menu
744  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "MapProjection")
745    
746  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
747                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
748  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
749                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
750  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
751                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
752  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
753                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
754  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
755                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
756  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
757                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
758  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
759    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
760                  helptext = _("Add/Remove labels"), icon = "label",
761                  sensitive = _has_visible_map)
762    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
763                   helptext = _("Full Extent"), icon = "fullextent",
764                  sensitive = _has_visible_map)
765    _method_command("map_print", _("Prin&t"), "PrintMap",
766                    helptext = _("Print the map"))
767    _method_command("map_rename", _("&Rename"), "RenameMap",
768                    helptext = _("Rename the map"))
769    _method_command("layer_add", _("&Add Layer"), "AddLayer",
770                    helptext = _("Add a new layer to active map"))
771    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
772                    helptext = _("Remove selected layer(s)"),
773                    sensitive = _can_remove_layer)
774    
775  # Layer menu  # Layer menu
776  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_projection", _("Pro&jection"), "LayerProjection",
                 helptext = "Add a new layer to active map")  
 _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  
                 helptext = "Remove selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  
                 helptext = "Set the fill color of selected layer(s)",  
777                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
778  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
779                  "LayerTransparentFill",                  helptext = _("Raise selected layer(s)"),
                 helptext = "Do not fill the selected layer(s)",  
780                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
781  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
782                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer(s)"),
783                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
784  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
785                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
786                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
787  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
788                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
789                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
790  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
791                  helptext = "Lower selected layer(s)",                  helptext = _("Show the selected layer's table"),
792                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
793  _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",  
794                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
795    
796    # the menu structure
797    main_menu = Menu("<main>", "<main>",
798                     [Menu("file", _("&File"),
799                           ["new_session", "open_session", None,
800                            "save_session", "save_session_as", None,
801                            "toggle_session_tree", None,
802                            "exit"]),
803                      Menu("map", _("&Map"),
804                           ["layer_add", "layer_remove",
805                            None,
806                            "map_projection",
807                            None,
808                            "map_zoom_in_tool", "map_zoom_out_tool",
809                            "map_pan_tool", "map_identify_tool", "map_label_tool",
810                            None,
811                            "map_full_extent",
812                            None,
813                            "toggle_legend",
814                            None,
815                            "map_print",
816                            None,
817                            "map_rename"]),
818                      Menu("layer", _("&Layer"),
819                            ["layer_raise", "layer_lower",
820                            None,
821                            "layer_show", "layer_hide",
822                            None,
823                            "layer_show_table",
824                            None,
825                            "layer_properties",
826                            None,
827                            "layer_projection"]),
828                      Menu("help", _("&Help"),
829                           ["help_about"])])
830    
831    # the main toolbar
832    
833    main_toolbar = Menu("<toolbar>", "<toolbar>",
834                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
835                         "map_full_extent", None,
836                         "map_identify_tool", "map_label_tool"])
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