/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 191 by bh, Tue May 28 16:04:49 2002 UTC revision 310 by bh, Tue Sep 10 16:45:22 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    
# Line 78  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 91  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 157  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 181  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 247  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 263  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 294  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):
319          self.canvas.SetMap(map)          self.canvas.SetMap(map)
320    
321        def Map(self):
322            """Return the map displayed by this mainwindow"""
323            return self.canvas.Map()
324    
325      def ShowSessionTree(self):      def ShowSessionTree(self):
326          name = "session_tree"          name = "session_tree"
327          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
328          if dialog is None:          if dialog is None:
329              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
330              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
331              dialog.Show(true)              dialog.Show(true)
332          else:          else:
# Line 345  class MainWindow(wxFrame): Line 368  class MainWindow(wxFrame):
368          if layer is not None:          if layer is not None:
369              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
370    
371        def CanRemoveLayer(self):
372            """Return true if the currently selected layer can be deleted.
373    
374            If no layer is selected return false.
375    
376            The return value of this method determines whether the remove
377            layer command is sensitive in menu.
378            """
379            layer = self.current_layer()
380            if layer is not None:
381                return self.canvas.Map().CanRemoveLayer(layer)
382            return 0
383    
384      def RaiseLayer(self):      def RaiseLayer(self):
385          layer = self.current_layer()          layer = self.current_layer()
386          if layer is not None:          if layer is not None:
387              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
388            
389      def LowerLayer(self):      def LowerLayer(self):
390          layer = self.current_layer()          layer = self.current_layer()
391          if layer is not None:          if layer is not None:
# Line 423  class MainWindow(wxFrame): Line 459  class MainWindow(wxFrame):
459              name = "table_view" + str(id(table))              name = "table_view" + str(id(table))
460              dialog = self.get_open_dialog(name)              dialog = self.get_open_dialog(name)
461              if dialog is None:              if dialog is None:
462                  dialog = tableview.TableFrame(self, self.interactor, name,                  dialog = tableview.LayerTableFrame(self, self.interactor, name,
463                                                "Table: %s" % layer.Title(),                                                     "Table: %s" % layer.Title(),
464                                                layer, table)                                                     layer, table)
465                  self.add_dialog(name, dialog)                  self.add_dialog(name, dialog)
466                  dialog.Show(true)                  dialog.Show(true)
467              else:              else:
# Line 489  class MainWindow(wxFrame): Line 525  class MainWindow(wxFrame):
525    
526  # Helper functions to define common command implementations  # Helper functions to define common command implementations
527  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
528      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
529      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
530    
531  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
532                      icon = "", sensitive = None):                      icon = "", sensitive = None):
533      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
534      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
535                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
536                           sensitive = sensitive))                           sensitive = sensitive))
537    
538    def make_check_current_tool(toolname):
539        """Return a function that tests if the currently active tool is toolname
540    
541        The returned function can be called with the context and returns
542        true iff the currently active tool's name is toolname. It's directly
543        usable as the 'checked' callback of a command.
544        """
545        def check_current_tool(context, name=toolname):
546            return context.mainwindow.canvas.CurrentTool() == name
547        return check_current_tool
548    
549  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
550                    icon = ""):                    icon = "", sensitive = None):
551      """Add a tool command"""      """Add a tool command"""
     def check_current_tool(context, name=toolname):  
         return context.canvas.CurrentTool() == name  
552      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
553                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
554                           checked = check_current_tool))                           checked = make_check_current_tool(toolname),
555                             sensitive = sensitive))
556    
557  def _has_selected_layer(context):  def _has_selected_layer(context):
558      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
559      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
560    
561    def _can_remove_layer(context):
562        return context.mainwindow.CanRemoveLayer()
563    
564    def _has_tree_window_shown(context):
565        """Return true if the tree window is shown"""
566        return context.mainwindow.get_open_dialog("session_tree") is None
567    
568    def _has_visible_map(context):
569        """Return true iff theres a visible map in the mainwindow.
570    
571        A visible map is a map with at least one visible layer."""
572        map = context.mainwindow.Map()
573        if map is not None:
574            for layer in map.Layers():
575                if layer.Visible():
576                    return 1
577        return 0
578    
579    
580  # File menu  # File menu
581  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", "&New Session", "NewSession")
582  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", "&Open Session", "OpenSession")
583  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", "&Save Session", "SaveSession")
584  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")
585  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree")  _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree",
586                    sensitive = _has_tree_window_shown)
587  _method_command("exit", "&Exit", "Exit")  _method_command("exit", "&Exit", "Exit")
588    
589  # Help menu  # Help menu
# Line 528  _method_command("help_about", "&About", Line 594  _method_command("help_about", "&About",
594  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", "Pro&jection", "Projection")
595    
596  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",
597                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in",
598                  sensitive = _has_visible_map)
599  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",
600                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out",
601                  sensitive = _has_visible_map)
602  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",
603                helptext = "Switch to map-mode 'pan'", icon = "pan")                helptext = "Switch to map-mode 'pan'", icon = "pan",
604                  sensitive = _has_visible_map)
605  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",
606                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = "Switch to map-mode 'identify'", icon = "identify",
607                  sensitive = _has_visible_map)
608  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",
609                helptext = "Add/Remove labels", icon = "label")                helptext = "Add/Remove labels", icon = "label",
610                  sensitive = _has_visible_map)
611  _method_command("map_full_extent", "&Full extent", "FullExtent",  _method_command("map_full_extent", "&Full extent", "FullExtent",
612                 helptext = "Full Extent", icon = "fullextent")                 helptext = "Full Extent", icon = "fullextent",
613                  sensitive = _has_visible_map)
614  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")
615    
616  # Layer menu  # Layer menu
# Line 546  _method_command("layer_add", "&Add Layer Line 618  _method_command("layer_add", "&Add Layer
618                  helptext = "Add a new layer to active map")                  helptext = "Add a new layer to active map")
619  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",  _method_command("layer_remove", "&Remove Layer", "RemoveLayer",
620                  helptext = "Remove selected layer(s)",                  helptext = "Remove selected layer(s)",
621                  sensitive = _has_selected_layer)                  sensitive = _can_remove_layer)
622  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",
623                  helptext = "Set the fill color of selected layer(s)",                  helptext = "Set the fill color of selected layer(s)",
624                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
Legend:
Removed from v.191  
changed lines
  Added in v.310
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