/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/mainwindow.py
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revision 13 by bh, Fri Aug 31 15:33:42 2001 UTC revision 829 by jonathan, Tue May 6 12:06:38 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  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    from context import Context
38    from command import registry, Command, ToolCommand
39    from messages import LAYER_SELECTED, SHAPES_SELECTED, VIEW_POSITION
40    
41    from Thuban.UI.dock import DockFrame
42    
43    import resource
44    
45  import main  import projdialog
 from command import registry, Command  
46    
47    
 # the directory where the toolbar icons are stored  
 bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps")  
 bitmapext = ".xpm"  
48    
49    class MainWindow(DockFrame):
50    
51  class MainWindow(wxFrame):      # Some messages that can be subscribed/unsubscribed directly through
52        # the MapCanvas come in fact from other objects. This is a map to
53        # 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      def __init__(self, parent, ID):      # Methods delegated to some instance variables. The delegation is
60          wxFrame.__init__(self, parent, ID, 'Thuban',      # implemented in the __getattr__ method.
61                           wxDefaultPosition, wxSize(400, 300))      delegated_methods = {"SelectLayer": "canvas",
62                             "SelectShapes": "canvas",
63                             }
64    
65        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            self.application = application
71    
72          self.CreateStatusBar()          self.CreateStatusBar()
73          self.SetStatusText("This is the wxPython-based "          if initial_message:
74                        "Graphical User Interface for exploring geographic data")              self.SetStatusText(initial_message)
75    
76          self.identify_view = None          self.identify_view = None
77    
78          self.init_ids()          self.init_ids()
79    
80          menuBar = wxMenuBar()          # creat the menubar from the main_menu description
81            self.SetMenuBar(self.build_menu_bar(main_menu))
         menu = wxMenu()  
         menuBar.Append(menu, "&File");  
         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 ["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_add", "layer_remove",  
                      None,  
                      "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)  
82    
83          # toolbar          # Similarly, create the toolbar from main_toolbar
84          toolbar = self.CreateToolBar(wxTB_3DBUTTONS)          toolbar = self.build_toolbar(main_toolbar)
         for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",  
                      "map_identify_tool", "map_label_tool"]:  
             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)          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          EVT_CLOSE(self, self.OnClose)          self.SetMainWindow(self.canvas)
96    
97            self.SetAutoLayout(True)
98    
99            self.init_dialogs()
100    
101            EVT_CLOSE(self, self._OnClose)
102    
103        def Subscribe(self, channel, *args):
104            """Subscribe a function to a message channel.
105    
106            If channel is one of the delegated messages call the appropriate
107            object's Subscribe method. Otherwise do nothing.
108            """
109            if channel in self.delegated_messages:
110                object = getattr(self, self.delegated_messages[channel])
111                object.Subscribe(channel, *args)
112            else:
113                print "Trying to subscribe to unsupported channel %s" % channel
114    
115        def Unsubscribe(self, channel, *args):
116            """Unsubscribe a function from a message channel.
117    
118            If channel is one of the delegated messages call the appropriate
119            object's Unsubscribe method. Otherwise do nothing.
120            """
121            if channel in self.delegated_messages:
122                object = getattr(self, self.delegated_messages[channel])
123                object.Unsubscribe(channel, *args)
124    
125        def __getattr__(self, attr):
126            """If attr is one of the delegated methods return that method
127    
128            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 123  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 137  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 156  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):
285            """Run a modal message box with the given text, title and flags
286            and return the result"""
287            dlg = wxMessageDialog(self, text, title, flags)
288            dlg.CenterOnParent()
289            result = dlg.ShowModal()
290            dlg.Destroy()
291            return result
292    
293        def init_dialogs(self):
294            """Initialize the dialog handling"""
295            # The mainwindow maintains a dict mapping names to open
296            # non-modal dialogs. The dialogs are put into this dict when
297            # they're created and removed when they're closed
298            self.dialogs = {}
299    
300        def add_dialog(self, name, dialog):
301            if self.dialogs.has_key(name):
302                raise RuntimeError(_("The Dialog named %s is already open") % name)
303            self.dialogs[name] = dialog
304    
305        def dialog_open(self, name):
306            return self.dialogs.has_key(name)
307    
308        def remove_dialog(self, name):
309            del self.dialogs[name]
310    
311        def get_open_dialog(self, name):
312            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):
332            """If the current session has been modified, ask the user
333            whether to save it and do so if requested. Return the outcome of
334            the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the
335            dialog wasn't run return wxID_NO.
336    
337            If the can_veto parameter is true (default) the dialog includes
338            a cancel button, otherwise not.
339            """
340            if self.application.session.WasModified():
341                flags = wxYES_NO | wxICON_QUESTION
342                if can_veto:
343                    flags = flags | wxCANCEL
344                result = self.RunMessageBox(_("Exit"),
345                                            _("The session has been modified."
346                                             " Do you want to save it?"),
347                                            flags)
348                if result == wxID_YES:
349                    self.SaveSession()
350            else:
351                result = wxID_NO
352            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          session = Session("")          self.save_modified_session()
361          session.AddMap(Map(""))          self.prepare_new_session()
362          main.app.SetSession(session)          self.application.SetSession(create_empty_session())
363    
364      def OpenSession(self):      def OpenSession(self):
365          dlg = wxFileDialog(self, "Select a session file", ".", "",          self.save_modified_session()
366                             "*.session", wxOPEN)          dlg = wxFileDialog(self, _("Open Session"), ".", "", "*.thuban", 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          main.app.SaveSession()          if self.application.session.filename == None:
374                self.SaveSessionAs()
375            else:
376                self.application.SaveSession()
377    
378      def SaveSessionAs(self):      def SaveSessionAs(self):
379          dlg = wxFileDialog(self, "Enter a filename for session", ".", "",          dlg = wxFileDialog(self, _("Save Session As"), ".", "",
380                             "*.session", wxOPEN)                             "*.thuban", wxSAVE|wxOVERWRITE_PROMPT)
381          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
382              main.app.session.SetFilename(dlg.GetPath())              self.application.session.SetFilename(dlg.GetPath())
383              main.app.SaveSession()              self.application.SaveSession()
384          dlg.Destroy()          dlg.Destroy()
385    
386      def Exit(self):      def Exit(self):
387          self.Close(false)          self.Close(False)
388    
389      def OnClose(self, event):      def _OnClose(self, event):
390          veto = 0          result = self.save_modified_session(can_veto = event.CanVeto())
391          if main.app.session.WasModified():          if result == wxID_CANCEL:
             flags = wxYES_NO | wxICON_QUESTION  
             if event.CanVeto():  
                 flags = flags | wxCANCEL  
             dlg = wxMessageDialog(self,  
                                   ("The session has been modified."  
                                    " Do you want to save it?"),  
                                   "Exit", flags)  
             result = dlg.ShowModal()  
             dlg.Destroy()  
             if result == wxID_YES:  
                 self.SaveSession()  
             elif result == wxID_CANCEL:  
                 veto = 1  
   
         if veto:  
392              event.Veto()              event.Veto()
393          else:          else:
394                # FIXME: it would be better to tie the unsubscription to
395                # wx's destroy event, but that isn't implemented for wxGTK
396                # yet.
397                self.canvas.Unsubscribe(VIEW_POSITION, self.view_position_changed)
398                DockFrame._OnClose(self, event)
399              self.Destroy()              self.Destroy()
400    
401      def SetMap(self, map):      def SetMap(self, map):
402          self.canvas.SetMap(map)          self.canvas.SetMap(map)
403            self.__SetTitle(map.Title())
404    
405            dialog = self.FindRegisteredDock("legend")
406            if dialog is not None:
407                dialog.GetPanel().SetMap(self.Map())
408    
409        def Map(self):
410            """Return the map displayed by this mainwindow"""
411    
412            return self.canvas.Map()
413    
414        def ToggleSessionTree(self):
415            """If the session tree is shown close it otherwise create a new tree"""
416            name = "session_tree"
417            dialog = self.get_open_dialog(name)
418            if dialog is None:
419                dialog = tree.SessionTreeView(self, self.application, name)
420                self.add_dialog(name, dialog)
421                dialog.Show(True)
422            else:
423                dialog.Close()
424    
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          dlg = wxMessageDialog(self,          self.RunMessageBox(_("About"),
431                                ("Thuban is a program for\n"                             _("Thuban v%s\n"
432                                 "exploring geographic data.\n"                              #"Build Date: %s\n"
433                                 "Copyright (C) 2001 Intevation GmbH.\n"                              "\n"
434                                 "Thuban is licensed under the GPL"),                              "Thuban is a program for\n"
435                                "About", wxOK | wxICON_INFORMATION)                              "exploring geographic data.\n"
436          dlg.ShowModal()                              "Copyright (C) 2001-2003 Intevation GmbH.\n"
437          dlg.Destroy()                              "Thuban is licensed under the GNU GPL"
438                               % __ThubanVersion__), #__BuildDate__)),
439                               wxOK | wxICON_INFORMATION)
440    
441      def AddLayer(self):      def AddLayer(self):
442          dlg = wxFileDialog(self, "Select a session 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              self.canvas.Map().AddLayer(layer)              layer = Layer(title, store)
449                map = self.canvas.Map()
450                has_layers = map.HasLayers()
451                try:
452                    map.AddLayer(layer)
453                except IOError:
454                    # the layer couldn't be opened
455                    self.RunMessageBox(_("Add Layer"),
456                                       _("Can't open the file '%s'.") % filename)
457                else:
458                    if not has_layers:
459                        # if we're adding a layer to an empty map, fit the
460                        # new map to the window
461                        self.canvas.FitMapToWindow()
462          dlg.Destroy()          dlg.Destroy()
463    
464      def RemoveLayer(self):      def RemoveLayer(self):
465          layer = self.current_layer()          layer = self.current_layer()
466          if layer is not None:          if layer is not None:
467              self.canvas.Map().RemoveLayer(layer)              self.canvas.Map().RemoveLayer(layer)
468          else:  
469              dlg = wxMessageDialog(self, "No layer is selected.\n",      def CanRemoveLayer(self):
470                                    "Remove layer", wxOK | wxICON_INFORMATION)          """Return true if the currently selected layer can be deleted.
471              dlg.ShowModal()  
472              dlg.Destroy()          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 277  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          tree = main.app.tree.tree          return self.canvas.SelectedLayer()
         layer = tree.GetPyData(tree.GetSelection())  
         if isinstance(layer, Layer):  
             return layer  
         return None  
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          tree = main.app.tree.tree          return self.canvas.HasSelectedLayer()
502          layer = tree.GetPyData(tree.GetSelection())  
503          return isinstance(layer, Layer)      def has_selected_shapes(self):
504            """Return true if a shape is currently selected"""
505            return self.canvas.HasSelectedShapes()
506    
507      def choose_color(self):      def choose_color(self):
508          """Run the color selection dialog and return the selected color.          """Run the color selection dialog and return the selected color.
# Line 305  class MainWindow(wxFrame): Line 520  class MainWindow(wxFrame):
520          dlg.Destroy()          dlg.Destroy()
521          return color          return color
522    
     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)  
   
523      def HideLayer(self):      def HideLayer(self):
524          layer = self.current_layer()          layer = self.current_layer()
525          if layer is not None:          if layer is not None:
# Line 342  class MainWindow(wxFrame): Line 533  class MainWindow(wxFrame):
533      def LayerShowTable(self):      def LayerShowTable(self):
534          layer = self.current_layer()          layer = self.current_layer()
535          if layer is not None:          if layer is not None:
536              tv = tableview.TableFrame(self, layer.table)              table = layer.table
537              tv.Show(true)              name = "table_view" + str(id(table))
538                dialog = self.get_open_dialog(name)
539                if dialog is None:
540                    dialog = tableview.LayerTableFrame(self, name,
541                                                   _("Table: %s") % layer.Title(),
542                                                       layer, table)
543                    self.add_dialog(name, dialog)
544                    dialog.Show(true)
545                else:
546                    # FIXME: bring dialog to front here
547                    pass
548    
549        def MapProjection(self):
550    
551            name = "map_projection"
552            dialog = self.get_open_dialog(name)
553    
554            if dialog is None:
555                map = self.canvas.Map()
556                dialog = projdialog.ProjFrame(self, name,
557                         _("Map Projection: %s") % map.Title(), map)
558                self.add_dialog(name, dialog)
559                dialog.Show()
560            dialog.Raise()
561    
562        def LayerProjection(self):
563    
564            layer = self.current_layer()
565    
566            name = "layer_projection" + str(id(layer))
567            dialog = self.get_open_dialog(name)
568    
569            if dialog is None:
570                map = self.canvas.Map()
571                dialog = projdialog.ProjFrame(self, name,
572                         _("Layer Projection: %s") % layer.Title(), layer)
573                self.add_dialog(name, dialog)
574                dialog.Show()
575            dialog.Raise()
576    
577        def LayerEditProperties(self):
578    
579            #
580            # the menu option for this should only be available if there
581            # is a current layer, so we don't need to check if the
582            # current layer is None
583            #
584    
585      def Projection(self):          layer = self.current_layer()
586          map = self.canvas.Map()          self.OpenLayerProperties(layer)
587          proj = map.projection  
588          if proj is None:      def OpenLayerProperties(self, layer, group = None):
589              proj4Dlg = proj4dialog.Proj4Dialog(NULL, None)          name = "layer_properties" + str(id(layer))
590            dialog = self.get_open_dialog(name)
591    
592            if dialog is None:
593                dialog = Classifier(self, name, layer, group)
594                self.add_dialog(name, dialog)
595                dialog.Show()
596            dialog.Raise()
597    
598    
599        def ShowLegend(self):
600            if not self.LegendShown():
601                self.ToggleLegend()
602    
603        def ToggleLegend(self):
604            """Show the legend if it's not shown otherwise hide it again"""
605            name = "legend"
606            dialog = self.FindRegisteredDock(name)
607    
608            if dialog is None:
609                dialog = self.CreateDock(name, -1, _("Legend"), wxLAYOUT_LEFT)
610                legend.LegendPanel(dialog, None, self)
611                dialog.Dock()
612                dialog.GetPanel().SetMap(self.Map())
613                dialog.Show()
614          else:          else:
615              proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params)              dialog.Show(not dialog.IsShown())
616          if proj4Dlg.ShowModal() == wxID_OK:  
617              params = proj4Dlg.GetParams()      def LegendShown(self):
618              if params is not None:          """Return true iff the legend is currently open"""
619                  proj = Projection(params)          dialog = self.FindRegisteredDock("legend")
620              else:          return dialog is not None and dialog.IsShown()
                 proj = None  
             map.SetProjection(proj)  
         proj4Dlg.Destroy()  
621    
622      def ZoomInTool(self):      def ZoomInTool(self):
623          self.canvas.ZoomInTool()          self.canvas.ZoomInTool()
# Line 371  class MainWindow(wxFrame): Line 629  class MainWindow(wxFrame):
629          self.canvas.PanTool()          self.canvas.PanTool()
630    
631      def IdentifyTool(self):      def IdentifyTool(self):
         if self.identify_view is None:  
             self.identify_view = identifyview.IdentifyView(self, main.app)  
             self.identify_view.Show(true)  
632          self.canvas.IdentifyTool()          self.canvas.IdentifyTool()
633            self.identify_view_on_demand(None, None)
634    
635      def LabelTool(self):      def LabelTool(self):
636          self.canvas.LabelTool()          self.canvas.LabelTool()
# Line 382  class MainWindow(wxFrame): Line 638  class MainWindow(wxFrame):
638      def FullExtent(self):      def FullExtent(self):
639          self.canvas.FitMapToWindow()          self.canvas.FitMapToWindow()
640    
641        def FullLayerExtent(self):
642            self.canvas.FitLayerToWindow(self.current_layer())
643    
644        def FullSelectionExtent(self):
645            self.canvas.FitSelectedToWindow()
646    
647      def PrintMap(self):      def PrintMap(self):
648          self.canvas.Print()          self.canvas.Print()
649    
650        def RenameMap(self):
651            dlg = wxTextEntryDialog(self, "Map Title: ", "Rename Map",
652                                    self.Map().Title())
653            if dlg.ShowModal() == wxID_OK:
654                title = dlg.GetValue()
655                if title != "":
656                    self.Map().SetTitle(title)
657                    self.__SetTitle(title)
658    
659            dlg.Destroy()
660    
661        def identify_view_on_demand(self, layer, shapes):
662            """Subscribed to the canvas' SHAPES_SELECTED message
663    
664            If the current tool is the identify tool, at least one shape is
665            selected and the identify dialog is not shown, show the dialog.
666            """
667            # If the selection has become empty we don't need to do
668            # anything. Otherwise it could happen that the dialog was popped
669            # up when the selection became empty, e.g. when a new selection
670            # is opened while the identify tool is active and dialog had
671            # been closed
672            if not shapes:
673                return
674    
675            name = "identify_view"
676            if self.canvas.CurrentTool() == "IdentifyTool":
677                if not self.dialog_open(name):
678                    dialog = identifyview.IdentifyView(self, name)
679                    self.add_dialog(name, dialog)
680                    dialog.Show(True)
681                else:
682                    # FIXME: bring dialog to front?
683                    pass
684    
685        def __SetTitle(self, title):
686            self.SetTitle("Thuban - " + title)
687    
688  #  #
689  # Define all the commands available in the main window  # Define all the commands available in the main window
# Line 393  class MainWindow(wxFrame): Line 692  class MainWindow(wxFrame):
692    
693  # Helper functions to define common command implementations  # Helper functions to define common command implementations
694  def call_method(context, methodname, *args):  def call_method(context, methodname, *args):
695      """Call the context's method methodname with args *args"""      """Call the mainwindow's method methodname with args *args"""
696      apply(getattr(context, methodname), args)      apply(getattr(context.mainwindow, methodname), args)
697    
698  def _method_command(name, title, method, helptext = "", sensitive = None):  def _method_command(name, title, method, helptext = "",
699      """Add a command implemented by a method of the context object"""                      icon = "", sensitive = None, checked = None):
700        """Add a command implemented by a method of the mainwindow object"""
701      registry.Add(Command(name, title, call_method, args=(method,),      registry.Add(Command(name, title, call_method, args=(method,),
702                           helptext = helptext, sensitive = sensitive))                           helptext = helptext, icon = icon,
703                             sensitive = sensitive, checked = checked))
704    
705    def make_check_current_tool(toolname):
706        """Return a function that tests if the currently active tool is toolname
707    
708        The returned function can be called with the context and returns
709        true iff the currently active tool's name is toolname. It's directly
710        usable as the 'checked' callback of a command.
711        """
712        def check_current_tool(context, name=toolname):
713            return context.mainwindow.canvas.CurrentTool() == name
714        return check_current_tool
715    
716  def _tool_command(name, title, method, toolname, helptext = "",  def _tool_command(name, title, method, toolname, helptext = "",
717                    icon = ""):                    icon = "", sensitive = None):
718      """Add a tool command"""      """Add a tool command"""
719      def check_current_tool(context, name=toolname):      registry.Add(ToolCommand(name, title, call_method, args=(method,),
720          return context.canvas.CurrentTool() == name                               helptext = helptext, icon = icon,
721      registry.Add(Command(name, title, call_method, args=(method,),                               checked = make_check_current_tool(toolname),
722                           helptext = helptext, icon = icon,                               sensitive = sensitive))
                          checked = check_current_tool))  
723    
724  def _has_selected_layer(context):  def _has_selected_layer(context):
725      """Return true if a layer is selected in the context"""      """Return true if a layer is selected in the context"""
726      return context.has_selected_layer()      return context.mainwindow.has_selected_layer()
727    
728    def _has_selected_shapes(context):
729        """Return true if a layer is selected in the context"""
730        return context.mainwindow.has_selected_shapes()
731    
732    def _can_remove_layer(context):
733        return context.mainwindow.CanRemoveLayer()
734    
735    def _has_tree_window_shown(context):
736        """Return true if the tree window is shown"""
737        return context.mainwindow.SessionTreeShown()
738    
739    def _has_visible_map(context):
740        """Return true iff theres a visible map in the mainwindow.
741    
742        A visible map is a map with at least one visible layer."""
743        map = context.mainwindow.Map()
744        if map is not None:
745            for layer in map.Layers():
746                if layer.Visible():
747                    return 1
748        return 0
749    
750    def _has_legend_shown(context):
751        """Return true if the legend window is shown"""
752        return context.mainwindow.LegendShown()
753    
754    
755  # File menu  # File menu
756  _method_command("new_session", "&New Session", "NewSession")  _method_command("new_session", _("&New Session"), "NewSession")
757  _method_command("open_session", "&Open Session", "OpenSession")  _method_command("open_session", _("&Open Session..."), "OpenSession")
758  _method_command("save_session", "&Save Session", "SaveSession")  _method_command("save_session", _("&Save Session"), "SaveSession")
759  _method_command("save_session_as", "Save Session &As", "SaveSessionAs")  _method_command("save_session_as", _("Save Session &As..."), "SaveSessionAs")
760  _method_command("exit", "&Exit", "Exit")  _method_command("toggle_session_tree", _("Session &Tree"), "ToggleSessionTree",
761                    checked = _has_tree_window_shown)
762    _method_command("toggle_legend", _("Legend"), "ToggleLegend",
763                    checked = _has_legend_shown)
764    _method_command("exit", _("E&xit"), "Exit")
765    
766  # Help menu  # Help menu
767  _method_command("help_about", "&About", "About")  _method_command("help_about", _("&About..."), "About")
768    
769    
770  # Map menu  # Map menu
771  _method_command("map_projection", "Pro&jection", "Projection")  _method_command("map_projection", _("Pro&jection..."), "MapProjection")
772    
773  _tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool",  _tool_command("map_zoom_in_tool", _("&Zoom in"), "ZoomInTool", "ZoomInTool",
774                helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in")                helptext = _("Switch to map-mode 'zoom-in'"), icon = "zoom_in",
775  _tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool",                sensitive = _has_visible_map)
776                helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out")  _tool_command("map_zoom_out_tool", _("Zoom &out"), "ZoomOutTool", "ZoomOutTool",
777  _tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool",                helptext = _("Switch to map-mode 'zoom-out'"), icon = "zoom_out",
778                helptext = "Switch to map-mode 'pan'", icon = "pan")                sensitive = _has_visible_map)
779  _tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool",  _tool_command("map_pan_tool", _("&Pan"), "PanTool", "PanTool",
780                helptext = "Switch to map-mode 'identify'", icon = "identify")                helptext = _("Switch to map-mode 'pan'"), icon = "pan",
781  _tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool",                sensitive = _has_visible_map)
782                helptext = "Add/Remove labels", icon = "label")  _tool_command("map_identify_tool", _("&Identify"), "IdentifyTool",
783  _method_command("map_full_extent", "&Full extent", "FullExtent")                "IdentifyTool",
784  _method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map")                helptext = _("Switch to map-mode 'identify'"), icon = "identify",
785                  sensitive = _has_visible_map)
786    _tool_command("map_label_tool", _("&Label"), "LabelTool", "LabelTool",
787                  helptext = _("Add/Remove labels"), icon = "label",
788                  sensitive = _has_visible_map)
789    _method_command("map_full_extent", _("&Full extent"), "FullExtent",
790                   helptext = _("Full Extent"), icon = "fullextent",
791                  sensitive = _has_visible_map)
792    _method_command("layer_full_extent", _("&Full layer extent"), "FullLayerExtent",
793                   helptext = _("Full Layer Extent"), icon = "fulllayerextent",
794                  sensitive = _has_selected_layer)
795    _method_command("selected_full_extent", _("&Full selection extent"), "FullSelectionExtent",
796                   helptext = _("Full Selection Extent"), icon = "fullselextent",
797                  sensitive = _has_selected_shapes)
798    _method_command("map_print", _("Prin&t"), "PrintMap",
799                    helptext = _("Print the map"))
800    _method_command("map_rename", _("&Rename..."), "RenameMap",
801                    helptext = _("Rename the map"))
802    _method_command("layer_add", _("&Add Layer..."), "AddLayer",
803                    helptext = _("Add a new layer to active map"))
804    _method_command("layer_remove", _("&Remove Layer"), "RemoveLayer",
805                    helptext = _("Remove selected layer(s)"),
806                    sensitive = _can_remove_layer)
807    
808  # Layer menu  # Layer menu
809  _method_command("layer_add", "&Add", "AddLayer",  _method_command("layer_projection", _("Pro&jection..."), "LayerProjection",
                 helptext = "Add a new layer to active map")  
 _method_command("layer_remove", "&Remove", "RemoveLayer",  
                 helptext = "Remove selected layer(s)",  
                 sensitive = _has_selected_layer)  
 _method_command("layer_fill_color", "&Fill Color", "LayerFillColor",  
                 helptext = "Set the fill color of selected layer(s)",  
810                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
811  _method_command("layer_transparent_fill", "&Transparent Fill",  _method_command("layer_raise", _("&Raise"), "RaiseLayer",
812                  "LayerTransparentFill",                  helptext = _("Raise selected layer(s)"),
                 helptext = "Do not fill the selected layer(s)",  
813                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
814  _method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor",  _method_command("layer_lower", _("&Lower"), "LowerLayer",
815                  helptext = "Set the outline color of selected layer(s)",                  helptext = _("Lower selected layer(s)"),
816                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
817  _method_command("layer_no_outline", "&No Outline", "LayerNoOutline",  _method_command("layer_show", _("&Show"), "ShowLayer",
818                  helptext = "Do not draw the outline of the selected layer(s)",                  helptext = _("Make selected layer(s) visible"),
819                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
820  _method_command("layer_raise", "&Raise", "RaiseLayer",  _method_command("layer_hide", _("&Hide"), "HideLayer",
821                  helptext = "Raise selected layer(s)",                  helptext = _("Make selected layer(s) unvisible"),
822                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
823  _method_command("layer_lower", "&Lower", "LowerLayer",  _method_command("layer_show_table", _("Show Ta&ble"), "LayerShowTable",
824                  helptext = "Lower selected layer(s)",                  helptext = _("Show the selected layer's table"),
825                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
826  _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",  
827                  sensitive = _has_selected_layer)                  sensitive = _has_selected_layer)
828    
829    # the menu structure
830    main_menu = Menu("<main>", "<main>",
831                     [Menu("file", _("&File"),
832                           ["new_session", "open_session", None,
833                            "save_session", "save_session_as", None,
834                            "toggle_session_tree", None,
835                            "exit"]),
836                      Menu("map", _("&Map"),
837                           ["layer_add", "layer_remove", "map_rename",
838                            None,
839                            "map_projection",
840                            None,
841                            "map_zoom_in_tool", "map_zoom_out_tool",
842                            "map_pan_tool",
843                            "map_full_extent",
844                            "layer_full_extent",
845                            "selected_full_extent",
846                            None,
847                            "map_identify_tool", "map_label_tool",
848                            None,
849                            "toggle_legend",
850                            None,
851                            "map_print"]),
852                      Menu("layer", _("&Layer"),
853                            ["layer_raise", "layer_lower",
854                            None,
855                            "layer_show", "layer_hide",
856                            None,
857                            "layer_show_table",
858                            None,
859                            "layer_projection",
860                            "layer_properties"]),
861                      Menu("help", _("&Help"),
862                           ["help_about"])])
863    
864    # the main toolbar
865    
866    main_toolbar = Menu("<toolbar>", "<toolbar>",
867                        ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool",
868                         "map_full_extent",
869                         "layer_full_extent",
870                         "selected_full_extent",
871                         None,
872                         "map_identify_tool", "map_label_tool"])
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