/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 123 by bh, Mon Apr 29 18:05:04 2002 UTC revision 270 by bh, Thu Aug 22 13:46:46 2002 UTC
# Line 12  The main window Line 12  The main window
12    
13  __version__ = "$Revision$"  __version__ = "$Revision$"
14    
15  import sys, os  import os
16    
17  from wxPython.wx import *  from wxPython.wx import *
18    
19  import Thuban  import Thuban
20  from Thuban.Model.session import Session, create_empty_session  from Thuban.Model.session import create_empty_session
 from Thuban.Model.map import Map  
21  from Thuban.Model.layer import Layer  from Thuban.Model.layer import Layer
22  from Thuban.Model.color import Color  from Thuban.Model.color import Color
23  from Thuban.Model.proj import Projection  from Thuban.Model.proj import Projection
# Line 27  import view Line 26  import view
26  import tree  import tree
27  import proj4dialog  import proj4dialog
28  import tableview, identifyview  import tableview, identifyview
29    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          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
59            self.SetMenuBar(self.build_menu_bar(main_menu))
60    
61          menu = wxMenu()          # Similarly, create the toolbar from main_toolbar
62          menuBar.Append(menu, "&File");          toolbar = self.build_toolbar(main_toolbar)
         for name in ["new_session", "open_session", None,  
                      "save_session", "save_session_as", None,  
                      "exit"]:  
             self.add_menu_command(menu, name)  
   
         menu = wxMenu()  
         menuBar.Append(menu, "&Map");  
         for name in ["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")  
   
         self.SetMenuBar(menuBar)  
   
         # toolbar  
         toolbar = self.CreateToolBar(wxTB_3DBUTTONS)  
   
         # 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 125  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 137  class MainWindow(wxFrame): Line 92  class MainWindow(wxFrame):
92              self.name_to_id[name] = ID              self.name_to_id[name] = ID
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):
105            """Build and return the menu bar from the menu description"""
106            menu_bar = wxMenuBar()
107    
108            for item in menudesc.items:
109                # here the items must all be Menu instances themselves
110                menu_bar.Append(self.build_menu(item), item.title)
111    
112            return menu_bar
113    
114        def build_menu(self, menudesc):
115            """Build and return a wxMenu from a menudescription"""
116            wxmenu = wxMenu()
117            last = None
118            for item in menudesc.items:
119                # here the items must all be Menu instances themselves
120                if item is None:
121                    # a separator. Only add one if the last item was not a
122                    # separator
123                    if last is not None:
124                        wxmenu.AppendSeparator()
125                elif isinstance(item, Menu):
126                    # a submenu
127                    wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item))
128                else:
129                    # must the name the name of a command
130                    self.add_menu_command(wxmenu, item)
131                last = item
132            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 151  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 175  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    
# Line 182  class MainWindow(wxFrame): Line 197  class MainWindow(wxFrame):
197          name = self.id_to_name.get(event.GetId())          name = self.id_to_name.get(event.GetId())
198          if name is not None:          if name is not None:
199              command = registry.Command(name)              command = registry.Command(name)
200              command.Execute(self)              context = Context(self.application, self.application.Session(),
201                                  self)
202                command.Execute(context)
203          else:          else:
204              print "Unknown command ID %d" % event.GetId()              print "Unknown command ID %d" % event.GetId()
205    
206      def update_command_ui(self, event):      def update_command_ui(self, event):
207          #print "update_command_ui", self.id_to_name[event.GetId()]          #print "update_command_ui", self.id_to_name[event.GetId()]
208            context = Context(self.application, self.application.Session(), self)
209          command = registry.Command(self.id_to_name[event.GetId()])          command = registry.Command(self.id_to_name[event.GetId()])
210          if command is not None:          if command is not None:
211              event.Enable(command.Sensitive(self))              event.Enable(command.Sensitive(context))
212              event.SetText(command.DynText(self))              event.SetText(command.DynText(context))
213              if command.IsCheckCommand():              if command.IsCheckCommand():
214                  event.Check(command.Checked(self))                  event.Check(command.Checked(context))
215    
216      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):      def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION):
217          """Run a modla message box with the given text, title and flags          """Run a modal message box with the given text, title and flags
218          and return the result"""          and return the result"""
219          dlg = wxMessageDialog(self, text, title, flags)          dlg = wxMessageDialog(self, text, title, flags)
220          result = dlg.ShowModal()          result = dlg.ShowModal()
# Line 241  class MainWindow(wxFrame): Line 259  class MainWindow(wxFrame):
259          If the can_veto parameter is true (default) the dialog includes          If the can_veto parameter is true (default) the dialog includes
260          a cancel button, otherwise not.          a cancel button, otherwise not.
261          """          """
262          if main.app.session.WasModified():          if self.application.session.WasModified():
263              flags = wxYES_NO | wxICON_QUESTION              flags = wxYES_NO | wxICON_QUESTION
264              if can_veto:              if can_veto:
265                  flags = flags | wxCANCEL                  flags = flags | wxCANCEL
# Line 257  class MainWindow(wxFrame): Line 275  class MainWindow(wxFrame):
275    
276      def NewSession(self):      def NewSession(self):
277          self.save_modified_session()          self.save_modified_session()
278          main.app.SetSession(create_empty_session())          self.application.SetSession(create_empty_session())
279    
280      def OpenSession(self):      def OpenSession(self):
281          self.save_modified_session()          self.save_modified_session()
282          dlg = wxFileDialog(self, "Select a session file", ".", "",          dlg = wxFileDialog(self, "Select a session file", ".", "",
283                             "*.session", wxOPEN)                             "*.thuban", wxOPEN)
284          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
285              main.app.OpenSession(dlg.GetPath())              self.application.OpenSession(dlg.GetPath())
286          dlg.Destroy()          dlg.Destroy()
287    
288      def SaveSession(self):      def SaveSession(self):
289          if main.app.session.filename == None:          if self.application.session.filename == None:
290              self.SaveSessionAs()              self.SaveSessionAs()
291          main.app.SaveSession()          self.application.SaveSession()
292    
293      def SaveSessionAs(self):      def SaveSessionAs(self):
294          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",
295                             "*.session", wxOPEN)                             "*.thuban", wxOPEN)
296          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
297              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
298              main.app.SaveSession()              self.application.SaveSession()
299          dlg.Destroy()          dlg.Destroy()
300    
301      def Exit(self):      def Exit(self):
# Line 297  class MainWindow(wxFrame): Line 315  class MainWindow(wxFrame):
315          name = "session_tree"          name = "session_tree"
316          dialog = self.get_open_dialog(name)          dialog = self.get_open_dialog(name)
317          if dialog is None:          if dialog is None:
318              dialog = tree.SessionTreeView(self, main.app, name)              dialog = tree.SessionTreeView(self, self.application, name)
319              self.add_dialog(name, dialog)              self.add_dialog(name, dialog)
320              dialog.Show(true)              dialog.Show(true)
321          else:          else:
# Line 343  class MainWindow(wxFrame): Line 361  class MainWindow(wxFrame):
361          layer = self.current_layer()          layer = self.current_layer()
362          if layer is not None:          if layer is not None:
363              self.canvas.Map().RaiseLayer(layer)              self.canvas.Map().RaiseLayer(layer)
364            
365      def LowerLayer(self):      def LowerLayer(self):
366          layer = self.current_layer()          layer = self.current_layer()
367          if layer is not None:          if layer is not None:
# Line 483  class MainWindow(wxFrame): Line 501  class MainWindow(wxFrame):
501    
502  # Helper functions to define common command implementations  # Helper functions to define common command implementations
503  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
504      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
505      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
506    
507  def _method_command(name, title, method, helptext = "",  def _method_command(name, title, method, helptext = "",
508                      icon = "", sensitive = None):                      icon = "", sensitive = None):
509      """Add a command implemented by a method of the context object"""      """Add a command implemented by a method of the mainwindow object"""
510      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
511                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
512                           sensitive = sensitive))                           sensitive = sensitive))
513    
514    def make_check_current_tool(toolname):
515        """Return a function that tests if the currently active tool is toolname
516    
517        The returned function can be called with the context and returns
518        true iff the currently active tool's name is toolname. It's directly
519        usable as the 'checked' callback of a command.
520        """
521        def check_current_tool(context, name=toolname):
522            return context.mainwindow.canvas.CurrentTool() == name
523        return check_current_tool
524    
525  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
526                    icon = ""):                    icon = ""):
527      """Add a tool command"""      """Add a tool command"""
     def check_current_tool(context, name=toolname):  
         return context.canvas.CurrentTool() == name  
528      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
529                           helptext = helptext, icon = icon,                           helptext = helptext, icon = icon,
530                           checked = check_current_tool))                           checked = make_check_current_tool(toolname)))
531    
532  def _has_selected_layer(context):  def _has_selected_layer(context):
533      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
534      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
535    
536    def _has_tree_window_shown(context):
537        """Return true if the tree window is shown"""
538        return context.mainwindow.get_open_dialog("session_tree") is None
539    
540  # File menu  # File menu
541  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", "&New Session", "NewSession")
542  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", "&Open Session", "OpenSession")
543  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", "&Save Session", "SaveSession")
544  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")
545    _method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree",
546                    sensitive = _has_tree_window_shown)
547  _method_command("exit", "&Exit", "Exit")  _method_command("exit", "&Exit", "Exit")
548    
549  # Help menu  # Help menu
# Line 547  _method_command("layer_transparent_fill" Line 580  _method_command("layer_transparent_fill"
580                  "LayerTransparentFill",                  "LayerTransparentFill",
581                  helptext = "Do not fill the selected layer(s)",                  helptext = "Do not fill the selected layer(s)",
582                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
583  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor",
584                  helptext = "Set the outline color of selected layer(s)",                  helptext = "Set the outline color of selected layer(s)",
585                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
586  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",
# Line 568  _method_command("layer_hide", "&Hide", " Line 601  _method_command("layer_hide", "&Hide", "
601  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",  _method_command("layer_show_table", "Show Ta&ble", "LayerShowTable",
602                  helptext = "Show the selected layer's table",                  helptext = "Show the selected layer's table",
603                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
604    
605    
606    # the menu structure
607    main_menu = Menu("<main>", "<main>",
608                     [Menu("file", "&File",
609                           ["new_session", "open_session", None,
610                            "save_session", "save_session_as", None,
611                            "show_session_tree", None,
612                            "exit"]),
613                      Menu("map", "&Map",
614                           ["layer_add", "layer_remove",
615                            None,
616                            "map_projection",
617                            None,
618                            "map_zoom_in_tool", "map_zoom_out_tool",
619                            "map_pan_tool", "map_identify_tool", "map_label_tool",
620                            None,
621                            "map_full_extent",
622                            None,
623                            "map_print"]),
624                      Menu("layer", "&Layer",
625                           ["layer_fill_color", "layer_transparent_fill",
626                            "layer_outline_color", "layer_no_outline",
627                            None,
628                            "layer_raise", "layer_lower",
629                            None,
630                            "layer_show", "layer_hide",
631                            None,
632                            "layer_show_table"]),
633                      Menu("help", "&Help",
634                           ["help_about"])])
635    
636    # the main toolbar
637    
638    main_toolbar = Menu("<toolbar>", "<toolbar>",
639                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
640                         "map_identify_tool", "map_label_tool", "map_full_extent"])
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