/[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 723 by bh, Thu Apr 24 15:31:53 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          EVT_CLOSE(self, self.OnClose)          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 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", 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)
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            #self.legendPanel.SetMap(map)
405    
406        def Map(self):
407            """Return the map displayed by this mainwindow"""
408    
409      def ShowSessionTree(self):          # 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"          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:
# Line 418  class MainWindow(wxFrame): Line 543  class MainWindow(wxFrame):
543                  pass                  pass
544    
545      def Projection(self):      def Projection(self):
546          map = self.canvas.Map()  
547          proj = map.projection          name = "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, map)
553                self.add_dialog(name, dialog)
554                dialog.Show()
555            dialog.Raise()
556    
557        def LayerEditProperties(self):
558    
559            #
560            # the menu option for this should only be available if there
561            # is a current layer, so we don't need to check if the
562            # current layer is None
563            #
564    
565            layer = self.current_layer()
566            self.OpenLayerProperties(layer)
567    
568        def OpenLayerProperties(self, layer, group = None):
569            name = "layer_properties" + str(id(layer))
570            dialog = self.get_open_dialog(name)
571    
572            if dialog is None:
573                dialog = Classifier(self, name, layer, group)
574                self.add_dialog(name, dialog)
575                dialog.Show()
576            dialog.Raise()
577    
578    
579        def ShowLegend(self):
580            if not self.LegendShown():
581                self.ToggleLegend()
582    
583        def ToggleLegend(self):
584            """Show the legend if it's not shown otherwise hide it again"""
585            name = "legend"
586            dialog = self.FindRegisteredDock(name)
587    
588            if dialog is None:
589                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
590                legend.LegendPanel(dialog, None, self)
591                dialog.Dock()
592                dialog.GetPanel().SetMap(self.Map())
593                dialog.Show()
594          else:          else:
595              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params,              dialog.Show(not dialog.IsShown())
596                                                 map.BoundingBox())  
597          if proj4Dlg.ShowModal() == wxID_OK:      def LegendShown(self):
598              params = proj4Dlg.GetParams()          """Return true iff the legend is currently open"""
599              if params is not None:          dialog = self.FindRegisteredDock("legend")
600                  proj = Projection(params)          return dialog is not None and dialog.IsShown()
             else:  
                 proj = None  
             map.SetProjection(proj)  
         proj4Dlg.Destroy()  
601    
602      def ZoomInTool(self):      def ZoomInTool(self):
603          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 456  class MainWindow(wxFrame): Line 621  class MainWindow(wxFrame):
621      def PrintMap(self):      def PrintMap(self):
622          self.canvas.Print()          self.canvas.Print()
623    
624      def identify_view_on_demand(self, layer, shape):      def RenameMap(self):
625            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
626                                    self.Map().Title())
627            if dlg.ShowModal() == wxID_OK:
628                title = dlg.GetValue()
629                if title != "":
630                    self.Map().SetTitle(title)
631                    self.__SetTitle(title)
632    
633            dlg.Destroy()
634    
635        def identify_view_on_demand(self, layer, shapes):
636          name = "identify_view"          name = "identify_view"
637          if self.canvas.CurrentTool() == "IdentifyTool":          if self.canvas.CurrentTool() == "IdentifyTool":
638              if not self.dialog_open(name):              if not self.dialog_open(name):
639                  dialog = identifyview.IdentifyView(self, self.interactor, name)                  dialog = identifyview.IdentifyView(self, name)
640                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
641                  dialog.Show(true)                  dialog.Show(True)
642              else:              else:
643                  # FIXME: bring dialog to front?                  # FIXME: bring dialog to front?
644                  pass                  pass
645    
646        def __SetTitle(self, title):
647            self.SetTitle("Thuban - " + title)
648    
649  #  #
650  # Define all the commands available in the main window  # Define all the commands available in the main window
651  #  #
# Line 474  class MainWindow(wxFrame): Line 653  class MainWindow(wxFrame):
653    
654  # Helper functions to define common command implementations  # Helper functions to define common command implementations
655  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
656      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
657      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
658    
659  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
660                      icon = "", sensitive = None):                      icon = "", sensitive = None, checked = None):
661      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
662      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
663                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
664                           sensitive = sensitive))                           sensitive = sensitive, checked = checked))
665    
666    def make_check_current_tool(toolname):
667        """Return a function that tests if the currently active tool is toolname
668    
669        The returned function can be called with the context and returns
670        true iff the currently active tool's name is toolname. It's directly
671        usable as the 'checked' callback of a command.
672        """
673        def check_current_tool(context, name=toolname):
674            return context.mainwindow.canvas.CurrentTool() == name
675        return check_current_tool
676    
677  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
678                    icon = ""):                    icon = "", sensitive = None):
679      """Add a tool command"""      """Add a tool command"""
680      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
681          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
682      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
683                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
684    
685  def _has_selected_layer(context):  def _has_selected_layer(context):
686      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
687      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
688    
689    def _can_remove_layer(context):
690        return context.mainwindow.CanRemoveLayer()
691    
692    def _has_tree_window_shown(context):
693        """Return true if the tree window is shown"""
694        return context.mainwindow.SessionTreeShown()
695    
696    def _has_visible_map(context):
697        """Return true iff theres a visible map in the mainwindow.
698    
699        A visible map is a map with at least one visible layer."""
700        map = context.mainwindow.Map()
701        if map is not None:
702            for layer in map.Layers():
703                if layer.Visible():
704                    return 1
705        return 0
706    
707    def _has_legend_shown(context):
708        """Return true if the legend window is shown"""
709        return context.mainwindow.LegendShown()
710    
711    
712  # File menu  # File menu
713  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
714  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session"), "OpenSession")
715  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
716  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As"), "SaveSessionAs")
717  _method_command("exit", "&Exit", "Exit")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
718                    checked = _has_tree_window_shown)
719    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
720                    checked = _has_legend_shown)
721    _method_command("exit", _("E&xit"), "Exit")
722    
723  # Help menu  # Help menu
724  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About"), "About")
725    
726    
727  # Map menu  # Map menu
728  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection"), "Projection")
729    
730  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
731                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
732  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
733                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
734  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
735                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
736  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
737                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
738  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
739                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
740  _method_command("map_full_extent", "&Full extent", "FullExtent",                "IdentifyTool",
741                 helptext = "Full Extent", icon = "fullextent")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
742  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                sensitive = _has_visible_map)
743    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
744                  helptext = _("Add/Remove labels"), icon = "label",
745                  sensitive = _has_visible_map)
746    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
747                   helptext = _("Full Extent"), icon = "fullextent",
748                  sensitive = _has_visible_map)
749    _method_command("map_print", _("Prin&t"), "PrintMap",
750                    helptext = _("Print the map"))
751    _method_command("map_rename", _("&Rename"), "RenameMap",
752                    helptext = _("Rename the map"))
753    
754  # Layer menu  # Layer menu
755  _method_command("layer_add", "&Add Layer", "AddLayer",  _method_command("layer_add", _("&Add Layer"), "AddLayer",
756                  helptext = "Add a new layer to active map")                  helptext = _("Add a new layer to active map"))
757  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
758                  helptext = "Remove selected layer(s)",                  helptext = _("Remove selected layer(s)"),
759                  sensitive = _has_selected_layer)                  sensitive = _can_remove_layer)
760  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
761                  helptext = "Set the fill color of selected layer(s)",                  helptext = _("Raise selected layer(s)"),
                 sensitive = _has_selected_layer)  
 _method_command("layer_transparent_fill", "&Transparent Fill",  
                 "LayerTransparentFill",  
                 helptext = "Do not fill the selected layer(s)",  
762                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
763  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
764                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer(s)"),
765                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
766  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
767                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
768                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
769  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
770                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
771                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
772  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
773                  helptext = "Lower selected layer(s)",                  helptext = _("Show the selected layer's table"),
774                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
775  _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",  
776                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
777    
778    # the menu structure
779    main_menu = Menu("<main>", "<main>",
780                     [Menu("file", _("&File"),
781                           ["new_session", "open_session", None,
782                            "save_session", "save_session_as", None,
783                            "toggle_session_tree", None,
784                            "exit"]),
785                      Menu("map", _("&Map"),
786                           ["layer_add", "layer_remove",
787                            None,
788                            "map_projection",
789                            None,
790                            "map_zoom_in_tool", "map_zoom_out_tool",
791                            "map_pan_tool", "map_identify_tool", "map_label_tool",
792                            None,
793                            "map_full_extent",
794                            None,
795                            "toggle_legend",
796                            None,
797                            "map_print",
798                            None,
799                            "map_rename"]),
800                      Menu("layer", _("&Layer"),
801                            ["layer_raise", "layer_lower",
802                            None,
803                            "layer_show", "layer_hide",
804                            None,
805                            "layer_show_table",
806                            None,
807                            "layer_properties"]),
808                      Menu("help", _("&Help"),
809                           ["help_about"])])
810    
811    # the main toolbar
812    
813    main_toolbar = Menu("<toolbar>", "<toolbar>",
814                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
815                         "map_full_extent", None,
816                         "map_identify_tool", "map_label_tool"])
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