/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 188 by bh, Tue May 28 12:38:45 2002 UTC revision 307 by bh, Fri Sep 6 10:01:16 2002 UTC
# Line 28  import proj4dialog Line 28  import proj4dialog
28  import tableview, identifyview  import tableview, identifyview
29  from menu import Menu  from menu import Menu
30    
31  import main  from context import Context
32  from command import registry, Command  from command import registry, Command
33  from messages import SELECTED_SHAPE, VIEW_POSITION  from messages import SELECTED_SHAPE, VIEW_POSITION
34    
# Line 40  bitmapext = ".xpm" Line 40  bitmapext = ".xpm"
40    
41  class MainWindow(wxFrame):  class MainWindow(wxFrame):
42    
43      def __init__(self, parent, ID, interactor):      def __init__(self, parent, ID, title, application, interactor,
44          wxFrame.__init__(self, parent, ID, 'Thuban',                   initial_message = None, size = wxSize(-1, -1)):
45                           wxDefaultPosition, wxSize(400, 300))          wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, size)
46    
47            self.application = application
48          self.interactor = interactor          self.interactor = interactor
49    
50          self.CreateStatusBar()          self.CreateStatusBar()
51          self.SetStatusText("This is the wxPython-based "          if initial_message:
52                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
53    
54          self.identify_view = None          self.identify_view = None
55    
56          self.init_ids()          self.init_ids()
57    
58          #main_menu.print_menu()          # creat the menubar from the main_menu description
59          self.SetMenuBar(self.build_menu_bar(main_menu))          self.SetMenuBar(self.build_menu_bar(main_menu))
60    
61          # toolbar          # Similarly, create the toolbar from main_toolbar
62          toolbar = self.CreateToolBar(wxTB_3DBUTTONS)          toolbar = self.build_toolbar(main_toolbar)
   
         # set the size of the tools' bitmaps. Not needed on wxGTK, but  
         # on Windows. We probably shouldn't hardwire the bitmap size  
         # here  
         toolbar.SetToolBitmapSize(wxSize(24, 24))  
   
         for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool", "map_full_extent"]:  
             self.add_toolbar_command(toolbar, name)  
63          # call Realize to make sure that the tools appear.          # call Realize to make sure that the tools appear.
64          toolbar.Realize()          toolbar.Realize()
65    
# Line 87  class MainWindow(wxFrame): Line 79  class MainWindow(wxFrame):
79          self.current_id = 6000          self.current_id = 6000
80          self.id_to_name = {}          self.id_to_name = {}
81          self.name_to_id = {}          self.name_to_id = {}
82            self.events_bound = {}
83    
84      def get_id(self, name):      def get_id(self, name):
85          """Return the wxWindows id for the command named name.          """Return the wxWindows id for the command named name.
# Line 100  class MainWindow(wxFrame): Line 93  class MainWindow(wxFrame):
93              self.id_to_name[ID] = name              self.id_to_name[ID] = name
94          return ID          return ID
95    
96        def bind_command_events(self, command, ID):
97            """Bind the necessary events for the given command and ID"""
98            if not self.events_bound.has_key(ID):
99                # the events haven't been bound yet
100                EVT_MENU(self, ID, self.invoke_command)
101                if command.IsDynamic():
102                    EVT_UPDATE_UI(self, ID, self.update_command_ui)
103    
104      def build_menu_bar(self, menudesc):      def build_menu_bar(self, menudesc):
105          """Build and return the menu bar from the menu description"""          """Build and return the menu bar from the menu description"""
106          menu_bar = wxMenuBar()          menu_bar = wxMenuBar()
# Line 130  class MainWindow(wxFrame): Line 131  class MainWindow(wxFrame):
131              last = item              last = item
132          return wxmenu          return wxmenu
133    
134        def build_toolbar(self, toolbardesc):
135            """Build and return the main toolbar window from a toolbar description
136    
137            The parameter should be an instance of the Menu class but it
138            should not contain submenus.
139            """
140            toolbar = self.CreateToolBar(wxTB_3DBUTTONS)
141    
142            # set the size of the tools' bitmaps. Not needed on wxGTK, but
143            # on Windows, although it doesn't work very well there. It seems
144            # that only 16x16 icons are really supported on windows.
145            # We probably shouldn't hardwire the bitmap size here.
146            toolbar.SetToolBitmapSize(wxSize(24, 24))
147    
148            for item in toolbardesc.items:
149                if item is None:
150                    toolbar.AddSeparator()
151                else:
152                    # assume it's a string.
153                    self.add_toolbar_command(toolbar, item)
154    
155            return toolbar
156    
157      def add_menu_command(self, menu, name):      def add_menu_command(self, menu, name):
158          """Add the command with name name to the menu menu.          """Add the command with name name to the menu menu.
159    
# Line 143  class MainWindow(wxFrame): Line 167  class MainWindow(wxFrame):
167                  ID = self.get_id(name)                  ID = self.get_id(name)
168                  menu.Append(ID, command.Title(), command.HelpText(),                  menu.Append(ID, command.Title(), command.HelpText(),
169                              command.IsCheckCommand())                              command.IsCheckCommand())
170                  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)  
171              else:              else:
172                  print "Unknown command %s" % name                  print "Unknown command %s" % name
173    
# Line 167  class MainWindow(wxFrame): Line 189  class MainWindow(wxFrame):
189                  toolbar.AddTool(ID, bitmap,                  toolbar.AddTool(ID, bitmap,
190                                  shortHelpString = command.HelpText(),                                  shortHelpString = command.HelpText(),
191                                  isToggle = command.IsCheckCommand())                                  isToggle = command.IsCheckCommand())
192                    self.bind_command_events(command, ID)
193              else:              else:
194                  print "Unknown command %s" % name                  print "Unknown command %s" % name
195    
196        def Context(self):
197            """Return the context object for a command invoked from this window
198            """
199            return Context(self.application, self.application.Session(), self)
200    
201      def invoke_command(self, event):      def invoke_command(self, event):
202          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
203          if name is not None:          if name is not None:
204              command = registry.Command(name)              command = registry.Command(name)
205              command.Execute(self)              command.Execute(self.Context())
206          else:          else:
207              print "Unknown command ID %d" % event.GetId()              print "Unknown command ID %d" % event.GetId()
208    
209      def update_command_ui(self, event):      def update_command_ui(self, event):
210          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
211            context = self.Context()
212          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
213          if command is not None:          if command is not None:
214              event.Enable(command.Sensitive(self))              event.Enable(command.Sensitive(context))
215              event.SetText(command.DynText(self))              event.SetText(command.DynText(context))
216              if command.IsCheckCommand():              if command.IsCheckCommand():
217                  event.Check(command.Checked(self))                  event.Check(command.Checked(context))
218    
219      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
220          """Run a modal message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
# Line 233  class MainWindow(wxFrame): Line 262  class MainWindow(wxFrame):
262          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
263          a cancel button, otherwise not.          a cancel button, otherwise not.
264          """          """
265          if main.app.session.WasModified():          if self.application.session.WasModified():
266              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
267              if can_veto:              if can_veto:
268                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
# Line 249  class MainWindow(wxFrame): Line 278  class MainWindow(wxFrame):
278    
279      def NewSession(self):      def NewSession(self):
280          self.save_modified_session()          self.save_modified_session()
281          main.app.SetSession(create_empty_session())          self.application.SetSession(create_empty_session())
282    
283      def OpenSession(self):      def OpenSession(self):
284          self.save_modified_session()          self.save_modified_session()
285          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, "Select a session file", ".", "",
286                             "*.thuban", wxOPEN)                             "*.thuban", wxOPEN)
287          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
288              main.app.OpenSession(dlg.GetPath())              self.application.OpenSession(dlg.GetPath())
289          dlg.Destroy()          dlg.Destroy()
290    
291      def SaveSession(self):      def SaveSession(self):
292          if main.app.session.filename == None:          if self.application.session.filename == None:
293              self.SaveSessionAs()              self.SaveSessionAs()
294          main.app.SaveSession()          self.application.SaveSession()
295    
296      def SaveSessionAs(self):      def SaveSessionAs(self):
297          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",
298                             "*.thuban", wxOPEN)                             "*.thuban", wxOPEN)
299          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
300              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
301              main.app.SaveSession()              self.application.SaveSession()
302          dlg.Destroy()          dlg.Destroy()
303    
304      def Exit(self):      def Exit(self):
# Line 280  class MainWindow(wxFrame): Line 309  class MainWindow(wxFrame):
309          if result == wxID_CANCEL:          if result == wxID_CANCEL:
310              event.Veto()              event.Veto()
311          else:          else:
312                # FIXME: it would be better to tie the unsubscription to
313                # wx's destroy event, but that isn't implemented for wxGTK
314                # yet.
315                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
316              self.Destroy()              self.Destroy()
317    
318      def SetMap(self, map):      def SetMap(self, map):
# Line 289  class MainWindow(wxFrame): Line 322  class MainWindow(wxFrame):
322          name = "session_tree"          name = "session_tree"
323          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
324          if dialog is None:          if dialog is None:
325              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
326              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
327              dialog.Show(true)              dialog.Show(true)
328          else:          else:
# Line 331  class MainWindow(wxFrame): Line 364  class MainWindow(wxFrame):
364          if layer is not None:          if layer is not None:
365              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
366    
367        def CanRemoveLayer(self):
368            """Return true if the currently selected layer can be deleted.
369    
370            If no layer is selected return false.
371    
372            The return value of this method determines whether the remove
373            layer command is sensitive in menu.
374            """
375            layer = self.current_layer()
376            if layer is not None:
377                return self.canvas.Map().CanRemoveLayer(layer)
378            return 0
379    
380      def RaiseLayer(self):      def RaiseLayer(self):
381          layer = self.current_layer()          layer = self.current_layer()
382          if layer is not None:          if layer is not None:
383              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
384            
385      def LowerLayer(self):      def LowerLayer(self):
386          layer = self.current_layer()          layer = self.current_layer()
387          if layer is not None:          if layer is not None:
# Line 409  class MainWindow(wxFrame): Line 455  class MainWindow(wxFrame):
455              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
456              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
457              if dialog is None:              if dialog is None:
458                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, self.interactor, name,
459                                                "Table: %s" % layer.Title(),                                                     "Table: %s" % layer.Title(),
460                                                layer, table)                                                     layer, table)
461                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
462                  dialog.Show(true)                  dialog.Show(true)
463              else:              else:
# Line 475  class MainWindow(wxFrame): Line 521  class MainWindow(wxFrame):
521    
522  # Helper functions to define common command implementations  # Helper functions to define common command implementations
523  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
524      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
525      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
526    
527  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
528                      icon = "", sensitive = None):                      icon = "", sensitive = None):
529      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
530      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
531                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
532                           sensitive = sensitive))                           sensitive = sensitive))
533    
534    def make_check_current_tool(toolname):
535        """Return a function that tests if the currently active tool is toolname
536    
537        The returned function can be called with the context and returns
538        true iff the currently active tool's name is toolname. It's directly
539        usable as the 'checked' callback of a command.
540        """
541        def check_current_tool(context, name=toolname):
542            return context.mainwindow.canvas.CurrentTool() == name
543        return check_current_tool
544    
545  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
546                    icon = ""):                    icon = ""):
547      """Add a tool command"""      """Add a tool command"""
     def check_current_tool(context, name=toolname):  
         return context.canvas.CurrentTool() == name  
548      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
549                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
550                           checked = check_current_tool))                           checked = make_check_current_tool(toolname)))
551    
552  def _has_selected_layer(context):  def _has_selected_layer(context):
553      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
554      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
555    
556    def _can_remove_layer(context):
557        return context.mainwindow.CanRemoveLayer()
558    
559    def _has_tree_window_shown(context):
560        """Return true if the tree window is shown"""
561        return context.mainwindow.get_open_dialog("session_tree") is None
562    
563  # File menu  # File menu
564  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", "&New Session", "NewSession")
565  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", "&Open Session", "OpenSession")
566  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", "&Save Session", "SaveSession")
567  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")
568  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree",
569                    sensitive = _has_tree_window_shown)
570  _method_command("exit", "&Exit", "Exit")  _method_command("exit", "&Exit", "Exit")
571    
572  # Help menu  # Help menu
# Line 532  _method_command("layer_add", "&Add Layer Line 595  _method_command("layer_add", "&Add Layer
595                  helptext = "Add a new layer to active map")                  helptext = "Add a new layer to active map")
596  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",
597                  helptext = "Remove selected layer(s)",                  helptext = "Remove selected layer(s)",
598                  sensitive = _has_selected_layer)                  sensitive = _can_remove_layer)
599  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",
600                  helptext = "Set the fill color of selected layer(s)",                  helptext = "Set the fill color of selected layer(s)",
601                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
# Line 592  main_menu = Menu("<main>", "<main>", Line 655  main_menu = Menu("<main>", "<main>",
655                          "layer_show_table"]),                          "layer_show_table"]),
656                    Menu("help", "&Help",                    Menu("help", "&Help",
657                         ["help_about"])])                         ["help_about"])])
658    
659    # the main toolbar
660    
661    main_toolbar = Menu("<toolbar>", "<toolbar>",
662                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
663                         "map_identify_tool", "map_label_tool", "map_full_extent"])
Legend:
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changed lines
  Added in v.307
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