/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/projdialog.py
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revision 1819 by bh, Mon Oct 13 15:55:43 2003 UTC revision 2051 by frank, Wed Jan 21 17:09:15 2004 UTC
# Line 21  from Thuban import _ Line 21  from Thuban import _
21  from Thuban.Model.proj import Projection, ProjFile  from Thuban.Model.proj import Projection, ProjFile
22    
23  from Thuban.Model.resource import get_user_proj_file, get_system_proj_file, \  from Thuban.Model.resource import get_user_proj_file, get_system_proj_file, \
24                                    read_proj_file, write_proj_file                                    read_proj_file, write_proj_file, \
25                                      DEFAULT_PROJ_FILE, EPSG_PROJ_FILE, \
26                                      EPSG_DEPRECATED_PROJ_FILE
27  from Thuban.UI.dialogs import NonModalNonParentDialog  from Thuban.UI.dialogs import NonModalNonParentDialog
28    
29    from common import ThubanBeginBusyCursor, ThubanEndBusyCursor
30  from sizers import NotebookLikeSizer  from sizers import NotebookLikeSizer
31    from projlist import PROJ_SELECTION_CHANGED, ProjectionList
32    from common import ThubanBeginBusyCursor, ThubanEndBusyCursor
33    
34    
35    
 ID_PROJ_ADVANCED  = 4001  
36  ID_PROJ_PROJCHOICE = 4002  ID_PROJ_PROJCHOICE = 4002
37  ID_PROJ_ADDTOLIST    = 4003  ID_PROJ_ADDTOLIST    = 4003
38  ID_PROJ_NEW       = 4004  ID_PROJ_NEW       = 4004
# Line 56  class ProjFrame(NonModalNonParentDialog) Line 62  class ProjFrame(NonModalNonParentDialog)
62              ("tmerc", _("Transverse Mercator"), TMPanel),              ("tmerc", _("Transverse Mercator"), TMPanel),
63              ("utm", _("Universal Transverse Mercator"), UTMPanel),              ("utm", _("Universal Transverse Mercator"), UTMPanel),
64              ("lcc", _("Lambert Conic Conformal"), LCCPanel),              ("lcc", _("Lambert Conic Conformal"), LCCPanel),
65              ("latlong", _("Geographic"), GeoPanel)]              ("latlong", _("Geographic"), GeoPanel),
66                ("longlat", _("Geographic"), GeoPanel)]#longlat is an alias of proj
67          self.receiver = receiver          self.receiver = receiver
68          self.haveTried = False          self.haveTried = False
69          self.curProjPanel = None          self.curProjPanel = None
70            self.__usrProjFile = None
71            self._sys_proj_files = {}
72    
73          self.build_dialog()          self.build_dialog()
74          self.Layout()          self.Layout()
75    
76          self.originalProjection = self.receiver.GetProjection()          self.originalProjection = self.receiver.GetProjection()
77    
78          self.__DoOnProjAvail()          self.projection_list.SelectProjection(self.originalProjection)
79          self.button_ok.SetFocus()          self.projection_list.SetFocus()
         self.availprojs.SetFocus()  
80    
81      def build_dialog(self):      def build_dialog(self):
82          """Build the dialog's widgets and set the event handlers"""          """Build the dialog's widgets and set the event handlers"""
# Line 81  class ProjFrame(NonModalNonParentDialog) Line 89  class ProjFrame(NonModalNonParentDialog)
89          #    The projection list and associated controls          #    The projection list and associated controls
90          #          #
91          vbox = wxBoxSizer(wxVERTICAL)          vbox = wxBoxSizer(wxVERTICAL)
92          main_box.Add(vbox, 0, wxALL|wxEXPAND)          main_box.Add(vbox, 4, wxALL|wxEXPAND)
93    
94          label = wxStaticText(self, -1, _("Available Projections:"))          #label = wxStaticText(self, -1, _("Available Projections:"))
95          vbox.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4)          #vbox.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4)
96    
97          hbox = wxBoxSizer(wxHORIZONTAL)          hbox = wxBoxSizer(wxHORIZONTAL)
98          vbox.Add(hbox, 1, wxALL|wxEXPAND)          vbox.Add(hbox, 1, wxALL|wxEXPAND)
99          self.availprojs = wxListBox(self, ID_PROJ_AVAIL,          proj_files = [self.load_user_proj(),
100                                      style=wxLB_EXTENDED|wxLB_SORT)                        self.load_system_proj(DEFAULT_PROJ_FILE)]
101          EVT_LISTBOX(self, ID_PROJ_AVAIL, self._OnProjAvail)          self.projection_list = ProjectionList(self, proj_files,
102          hbox.Add(self.availprojs, 1, wxALL|wxEXPAND|wxADJUST_MINSIZE, 4)                                                self.receiver.GetProjection())
103          self.__FillAvailList(selectCurrent = True)          hbox.Add(self.projection_list, 1, wxALL|wxEXPAND|wxADJUST_MINSIZE, 4)
104            self.projection_list.Subscribe(PROJ_SELECTION_CHANGED,
105                                           self.proj_selection_changed)
106    
107          # Projection List specific actions (Import/Export/Remove)          # Projection List specific actions (Import/Export/Remove)
108          buttons = wxBoxSizer(wxVERTICAL)          buttons = wxBoxSizer(wxVERTICAL)
# Line 108  class ProjFrame(NonModalNonParentDialog) Line 118  class ProjFrame(NonModalNonParentDialog)
118          EVT_BUTTON(self, ID_PROJ_REMOVE, self._OnRemove)          EVT_BUTTON(self, ID_PROJ_REMOVE, self._OnRemove)
119          buttons.Add(self.button_remove, 1, wxALL|wxEXPAND, 4)          buttons.Add(self.button_remove, 1, wxALL|wxEXPAND, 4)
120    
121            buttons.Add(20, 20, 0, wxEXPAND, 0)
122            label = wxStaticText(self, -1, _("Show EPSG:"))
123            buttons.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4)
124            self.check_epsg = wxCheckBox(self, -1, _("Normal"))
125            EVT_CHECKBOX(self, self.check_epsg.GetId(), self._OnShowEPSG)
126            buttons.Add(self.check_epsg, 1, wxALL|wxEXPAND, 4)
127            self.check_epsg_depr = wxCheckBox(self, -1, _("Deprecated"))
128            EVT_CHECKBOX(self, self.check_epsg_depr.GetId(), self._OnShowEPSG)
129            buttons.Add(self.check_epsg_depr, 1, wxALL|wxEXPAND, 4)
130    
131          # The file path          # The file path
132          self.projfilepath = wxStaticText(self, -1, "")          self.projfilepath = wxStaticText(self, -1, "")
133          vbox.Add(self.projfilepath, 0, wxALL|wxEXPAND)          vbox.Add(self.projfilepath, 0, wxALL|wxEXPAND)
# Line 117  class ProjFrame(NonModalNonParentDialog) Line 137  class ProjFrame(NonModalNonParentDialog)
137          #          #
138          self.edit_box = wxStaticBox(self, -1, _("Edit"))          self.edit_box = wxStaticBox(self, -1, _("Edit"))
139          sizer_edit = wxStaticBoxSizer(self.edit_box, wxHORIZONTAL)          sizer_edit = wxStaticBoxSizer(self.edit_box, wxHORIZONTAL)
140          main_box.Add(sizer_edit, 1, wxALL|wxEXPAND)          main_box.Add(sizer_edit, 5, wxALL|wxEXPAND)
141    
142          # Projection Specific Entries (Name/Projection)          # Projection Specific Entries (Name/Projection)
143          self.sizer_projctrls = wxBoxSizer(wxVERTICAL)          self.sizer_projctrls = wxBoxSizer(wxVERTICAL)
# Line 144  class ProjFrame(NonModalNonParentDialog) Line 164  class ProjFrame(NonModalNonParentDialog)
164          self.sizer_projctrls.Add(self.nbsizer, 1,          self.sizer_projctrls.Add(self.nbsizer, 1,
165                                   wxALL|wxEXPAND|wxADJUST_MINSIZE, 3)                                   wxALL|wxEXPAND|wxADJUST_MINSIZE, 3)
166          self.projection_panels = []          self.projection_panels = []
167            self.projchoice.Append(_("<Unknown>"), "")
168          for proj_type, name, cls in self.projection_panel_defs:          for proj_type, name, cls in self.projection_panel_defs:
169              self.projchoice.Append(name, proj_type)              self.projchoice.Append(name, proj_type)
170              panel = cls(self, self.receiver)              panel = cls(self, self.receiver)
# Line 198  class ProjFrame(NonModalNonParentDialog) Line 219  class ProjFrame(NonModalNonParentDialog)
219          top_box.Fit(self)          top_box.Fit(self)
220          top_box.SetSizeHints(self)          top_box.SetSizeHints(self)
221    
222        def OnClose(self, event):
223            self.projection_list.Unsubscribe(PROJ_SELECTION_CHANGED,
224                                             self.proj_selection_changed)
225            # Destroy the projection list explicitly so that it properly
226            # unsubscribes everything. It would be cleaner if the projection
227            # could do this by itself but wx doesn't always send destroy
228            # events for non-top-level widgets
229            self.projection_list.Destroy()
230            NonModalNonParentDialog.OnClose(self, event)
231    
232      def OnApply(self, event):      def OnApply(self, event):
233          self.__SetProjection()          self.__SetProjection()
234          self.haveTried = True          self.haveTried = True
# Line 219  class ProjFrame(NonModalNonParentDialog) Line 250  class ProjFrame(NonModalNonParentDialog)
250    
251      def _OnNew(self, event):      def _OnNew(self, event):
252    
253          # clear all selections          self.projection_list.ClearSelection()
         sel = self.availprojs.GetSelections()  
         for index in sel:  
             self.availprojs.SetSelection(index, False)  
   
254          self.projname.Clear()          self.projname.Clear()
255    
256          # supply a projection panel if there wasn't one          # supply a projection panel if there wasn't one
# Line 231  class ProjFrame(NonModalNonParentDialog) Line 258  class ProjFrame(NonModalNonParentDialog)
258              self.projchoice.SetSelection(0)              self.projchoice.SetSelection(0)
259              self.__DoOnProjChoice()              self.__DoOnProjChoice()
260    
261          self.curProjPanel.Clear()          if self.curProjPanel is not None:
262                self.curProjPanel.Clear()
263    
264      def _OnSave(self, event):      def _OnSave(self, event):
265    
266          sel = self.availprojs.GetSelections()          sel = self.projection_list.selected_projections()
267          assert len(sel) == 1,  "button shouldn't be enabled"          assert len(sel) == 1,  "button shouldn't be enabled"
268    
269          proj, projfile = self.availprojs.GetClientData(sel[0])          proj, projfile = sel[0]
270    
271          assert proj is not None and projfile is not None          assert proj is not None and projfile is not None
272    
273          newproj = self.__GetProjection()          newproj = self.__GetProjection()
274    
275          if newproj is not None:          if newproj is not None:
276                # FIXME: we should only allow this for the user proj file.
277              projfile.Replace(proj, newproj)              projfile.Replace(proj, newproj)
278              try:              self.write_proj_file(projfile)
279                  write_proj_file(projfile)              self.projection_list.SelectProjection(newproj)
             except IOError, (errno, errstr):  
                 self.__ShowError(projfile.GetFilename(), errstr)  
             self.availprojs.SetClientData(sel[0], [newproj, projfile])  
   
             self.__FillAvailList( selectProj = newproj.Label())  
280    
281      def _OnAddToList(self, event):      def _OnAddToList(self, event):
282    
283          proj = self.__GetProjection()          proj = self.__GetProjection()
284          if proj is not None:          if proj is not None:
285              self.__usrProjFile.Add(proj)              self.__usrProjFile.Add(proj)
286              try:              self.write_proj_file(self.__usrProjFile)
287                  write_proj_file(self.__usrProjFile)              self.projection_list.SelectProjection(proj)
             except IOError, (errno, errstr):  
                 self.__ShowError(self.__userProjFile.GetFilename(), errstr)  
   
             self.__FillAvailList( selectProj = proj.Label())  
   
     def _OnProjAvail(self, event):  
         self.__DoOnProjAvail()  
288    
289      def show_warnings(self, title, filename, warnings):      def show_warnings(self, title, filename, warnings):
290          """Show the warnings (a list of strings) in a dialog          """Show the warnings (a list of strings) in a dialog
# Line 280  class ProjFrame(NonModalNonParentDialog) Line 297  class ProjFrame(NonModalNonParentDialog)
297              self.parent.RunMessageBox(title, text)              self.parent.RunMessageBox(title, text)
298    
299      def _OnImport(self, event):      def _OnImport(self, event):
300            """Handler for the 'Import' button
301    
302          dlg = wxFileDialog(self, _("Import"), style = wxOPEN)          Ask the user for a filename, read the projections from that file
303            add them to the user ProjFile object and write the user file
304            back to disk.
305            """
306            dlg = wxFileDialog(self, _("Import"),
307                    self.parent.application.Path("projection"), style = wxOPEN)
308    
309          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
310              path = dlg.GetPath()              path = dlg.GetPath()
311    
312                ThubanBeginBusyCursor()
313              try:              try:
314                  projFile, warnings = read_proj_file(path)                  try:
315                  self.show_warnings(_("Warnings"), path, warnings)                      projFile, warnings = read_proj_file(path)
316                  for proj in projFile.GetProjections():                  except IOError, (errno, errstr):
317                      self.__usrProjFile.Add(proj)                      self.__ShowError(dlg.GetPath(), errstr)
318                  write_proj_file(self.__usrProjFile)                  else:
319              except IOError, (errno, errstr):                      self.show_warnings(_("Warnings"), path, warnings)
320                  self.__ShowError(dlg.GetPath(), errstr)                      for proj in projFile.GetProjections():
321                            self.__usrProjFile.Add(proj)
322              self.__FillAvailList()                      self.write_proj_file(self.__usrProjFile)
323                        self.parent.application.SetPath("projection", path)
324                finally:
325                    ThubanEndBusyCursor()
326          dlg.Destroy()          dlg.Destroy()
327    
328      def _OnExport(self, event):      def _OnExport(self, event):
329            """Handler for the 'Export' button.
330    
331          sel = self.availprojs.GetSelections()          Ask the user for a filename and write the selected projections
332            to that file.
333            """
334            sel = self.projection_list.selected_projections()
335          assert len(sel) != 0, "button should be disabled"          assert len(sel) != 0, "button should be disabled"
336    
337          dlg = wxFileDialog(self, _("Export"),          dlg = wxFileDialog(self, _("Export"),
338                          style = wxSAVE|wxOVERWRITE_PROMPT)                  self.parent.application.Path("projection"),
339                    style=wxSAVE|wxOVERWRITE_PROMPT)
340    
341          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
342              path = dlg.GetPath()              proj_file = ProjFile(dlg.GetPath())
343                for proj, pf in sel:
             projFile = ProjFile(path)  
   
             for i in sel:  
                 proj = self.availprojs.GetClientData(i)[CLIENT_PROJ]  
344                  if proj is not None:                  if proj is not None:
345                      projFile.Add(proj)                      proj_file.Add(proj)
346                self.write_proj_file(proj_file)
347              try:              self.parent.application.SetPath("projection", dlg.GetPath())
                 write_proj_file(projFile)  
             except IOError, (errno, errstr):  
                 self.__ShowError(dlg.GetPath(), errstr)  
348    
349          dlg.Destroy()          dlg.Destroy()
350    
351      def _OnRemove(self, event):      def _OnRemove(self, event):
352            """Handler for the 'Remove' button
353    
354          sel = self.availprojs.GetSelections()          Remove any selected projection that came from the user's
355            ProjFile. If the user ProjFile was modified write it back to
356            disk.
357            """
358            sel = self.projection_list.selected_projections()
359          assert len(sel) != 0, "button should be disabled!"          assert len(sel) != 0, "button should be disabled!"
360    
361          #          modified = False
362          # remove the items backwards so the indices don't change          for proj, pf in sel:
363          #              if proj is not None and pf is self.__usrProjFile:
364          sel = list(sel)                  pf.Remove(proj)
365          sel.sort()                  modified = True
         sel.reverse()  
   
         newselection = -1  
         if len(sel) == 1:  
             newselection = sel[0] - 1  
             if newselection < 0:  
                 newselection = 0  
   
         for i in sel:  
             proj, projfile = self.availprojs.GetClientData(i)  
   
             #  
             # this could be the case if they selected <None> or  
             # the currently used projection  
             #  
             if proj is not None and projfile is not None:  
                 projfile.Remove(proj)  
   
         try:  
             write_proj_file(projfile)  
         except IOError, (errno, errstr):  
             self.__ShowError(projfile.GetFilename(), errstr)  
366    
367          self.__FillAvailList()          if modified:
368                self.write_proj_file(self.__usrProjFile)
369    
370          #      def _OnShowEPSG(self, event):
371          # this *could* produce incorrect results if the .proj files          """Handler for the EVT_CHECKBOX events from the EPSG check button
         # change between the last list update and this selection  
         # because the list has been repopulated.  
         #  
         if newselection != -1 and self.availprojs.GetCount() > 0:  
             self.availprojs.SetSelection(newselection)  
372    
373          self.__VerifyButtons()          If the button is checked add the EPSG_PROJ_FILE to the list of
374            projfiles shown by the projection list. Otherwise remove it
375            """
376            proj_files = [self.load_user_proj(),
377                          self.load_system_proj(DEFAULT_PROJ_FILE)]
378            if self.check_epsg.IsChecked():
379                proj_files.append(self.load_system_proj(EPSG_PROJ_FILE))
380            if self.check_epsg_depr.IsChecked():
381                proj_files.append(self.load_system_proj(EPSG_DEPRECATED_PROJ_FILE))
382            self.projection_list.SetProjFiles(proj_files)
383    
384      def _OnProjName(self, event):      def _OnProjName(self, event):
385          self.__VerifyButtons()          self.__VerifyButtons()
386    
387      def __ShowError(self, filename, errstr):      def __ShowError(self, filename, errstr):
388          wxMessageDialog(self,          wxMessageDialog(self,
389              _("The following error occured:\n") +              _("The following error occured:\n") +
390              filename + "\n" + errstr,              filename + "\n" + errstr,
391              _("Error"), wxOK | wxICON_ERROR).ShowModal()              _("Error"), wxOK | wxICON_ERROR).ShowModal()
392    
393      def __VerifyButtons(self):      def __VerifyButtons(self):
394          """Enable or disable the appropriate buttons based on the          """Update button sensitivity"""
         current state of the dialog.  
         """  
395    
396          sel = self.availprojs.GetSelections()          num_sel = self.projection_list.GetSelectedItemCount()
397    
398          self.button_import.Enable(True)          self.button_import.Enable(True)
399          self.button_export.Enable(True)          self.button_export.Enable(True)
# Line 405  class ProjFrame(NonModalNonParentDialog) Line 415  class ProjFrame(NonModalNonParentDialog)
415          if self.curProjPanel is not None:          if self.curProjPanel is not None:
416              self.curProjPanel.Enable(True)              self.curProjPanel.Enable(True)
417    
418          if len(sel) == 0:          if num_sel == 0:
419              self.button_import.Enable(True)              self.button_import.Enable(True)
420              self.button_export.Enable(False)              self.button_export.Enable(False)
421              self.button_remove.Enable(False)              self.button_remove.Enable(False)
422              self.button_save.Enable(False)              self.button_save.Enable(False)
423    
424          elif len(sel) == 1:          elif num_sel == 1:
425    
426              proj, projFile = self.availprojs.GetClientData(sel[0])              selection = self.projection_list.selected_projections()
427                proj, projFile = selection[0]
428    
429              self.button_save.Enable(len(self.projname.GetValue()) > 0)              self.button_save.Enable(len(self.projname.GetValue()) > 0)
430              self.button_add.Enable(len(self.projname.GetValue()) > 0)              self.button_add.Enable(len(self.projname.GetValue()) > 0)
# Line 440  class ProjFrame(NonModalNonParentDialog) Line 451  class ProjFrame(NonModalNonParentDialog)
451          else:          else:
452              self.edit_box.Enable(False)              self.edit_box.Enable(False)
453    
454      def __DoOnProjAvail(self):      def proj_selection_changed(self, projs):
455            """Subscribed to the projection_list's PROJ_SELECTION_CHANGED message
         sel = self.availprojs.GetSelections()  
         if len(sel) == 1:  
   
             proj = self.availprojs.GetClientData(sel[0])[CLIENT_PROJ]  
             projfile = self.availprojs.GetClientData(sel[0])[CLIENT_PROJFILE]  
456    
457            Update the dialog to reflect the new selection.
458            """
459            if len(projs) == 0:
460                self.projfilepath.SetLabel(_("No Projections selected"))
461            elif len(projs) == 1:
462                proj, projfile = projs[0]
463              if proj is None:              if proj is None:
464                  # user selected <None>                  # user selected <None>
465                  self.projname.Clear()                  self.projname.Clear()
466                  self.projfilepath.SetLabel(_("Projection File: "))                  self.projfilepath.SetLabel("")
467              else:              else:
   
468                  if projfile is not None:                  if projfile is not None:
469                      self.projfilepath.SetLabel(_("Projection File: ") +                      filename = os.path.basename(projfile.GetFilename())
470                          os.path.basename(projfile.GetFilename()))                      self.projfilepath.SetLabel(_("Source of Projection: %s")
471                                                   % filename)
472                  else:                  else:
473                      # only None if the currently used projection is selected                      # only None if the currently used projection is selected
474                      self.projfilepath.SetLabel(_("Projection File: "))                      self.projfilepath.SetLabel("")
475    
476                  self.projname.SetValue(proj.Label())                  self.projname.SetValue(proj.Label())
477    
# Line 468  class ProjFrame(NonModalNonParentDialog) Line 480  class ProjFrame(NonModalNonParentDialog)
480                  for projType, name, cls in self.projection_panel_defs:                  for projType, name, cls in self.projection_panel_defs:
481                      if myProjType == projType:                      if myProjType == projType:
482                          self.projchoice.Enable(True)                          self.projchoice.Enable(True)
483                          self.projchoice.SetSelection(i)                          self.projchoice.SetSelection(i + 1)
484                          self.__DoOnProjChoice()                          self.__DoOnProjChoice()
485    
486                          #                          #
# Line 481  class ProjFrame(NonModalNonParentDialog) Line 493  class ProjFrame(NonModalNonParentDialog)
493                          break                          break
494                      i += 1                      i += 1
495                  else:                  else:
496                        self.projchoice.Select(0)
497                      self.projchoice.Disable()                      self.projchoice.Disable()
498                      self._show_proj_panel(UnknownProjPanel)                      self._show_proj_panel(UnknownProjPanel)
499                        assert self.curProjPanel is not None
500                        self.curProjPanel.SetProjection(proj)
501            else:
502                self.projfilepath.SetLabel(_("Multiple Projections selected"))
503    
504          self.__VerifyButtons()          self.__VerifyButtons()
505    
# Line 540  class ProjFrame(NonModalNonParentDialog) Line 557  class ProjFrame(NonModalNonParentDialog)
557          Could be None.          Could be None.
558          """          """
559    
560          sel = self.availprojs.GetSelections()          assert self.projection_list.GetSelectedItemCount() < 2, \
561          assert len(sel) < 2, "button should be disabled"                 "button should be disabled"
   
562    
563            sel = self.projection_list.selected_projections()
564          if len(sel) == 1:          if len(sel) == 1:
565              proj = self.availprojs.GetClientData(sel[0])[CLIENT_PROJ]              if sel[0][0] is None:
             if proj is None:  
566                  # <None> is selected                  # <None> is selected
567                  return None                  return None
568    
569          #          # self.curProjPanel should always contain the most relevant data
570          # self.curProjPanel should always contain the most          # for a projection
         # relevant data for a projection  
         #  
571          if self.curProjPanel is not None:          if self.curProjPanel is not None:
572              return Projection(self.curProjPanel.GetParameters(),              return Projection(self.curProjPanel.GetParameters(),
573                                self.projname.GetValue())                                self.projname.GetValue())
574    
575          return None          return None
576    
577      def __FillAvailList(self, selectCurrent = False, selectProj = None):      def load_user_proj(self):
578          """Populate the list of available projections.          """Return the user's ProjFile
           
         selectCurrent -- if True, select the projection used by  
                          the receiver, otherwise select nothing.  
         selectProj    -- if set, select the projection found under the  
                          specified name. This overwrites any other  
                          selection estimate.  
         """  
579    
580          self.availprojs.Clear()          If the file has not yet been loaded by the dialog, load it first
581            with get_user_proj_file and cache it in self.__usrProjFile.
582    
583          #          Show a busy cursor while loading the file.
584          # the list can never be empty. there will always be      
585          # at least this one item          If the file is not available, leave a note to the console.
586          #          """
587          self.availprojs.Append("<None>", (None, None))          if self.__usrProjFile is None:
588                ThubanBeginBusyCursor()
589                try:
590                    projfile, warnings = get_user_proj_file()
591                    if warnings:
592                        sys.stderr.write("".join(warnings))
593                    self.__usrProjFile = projfile
594                finally:
595                    ThubanEndBusyCursor()
596            return self.__usrProjFile
597    
598        def load_system_proj(self, name):
599            """Load the system ProjFile with the given name.
600    
601            If the file has not been loaded yet, load it first with
602            get_system_proj_file and put it into the cache. The name is
603            simply forwarded to get_system_proj_file.
604    
605          projfile, warnings = get_system_proj_file()          Show a busy cursor while loading the file.
606          self.show_warnings(_("Warnings"), projfile.GetFilename(), warnings)          """
607          for proj in projfile.GetProjections():          if name not in self._sys_proj_files:
608              self.availprojs.Append(proj.Label(), [proj, projfile])              ThubanBeginBusyCursor()
609          self.__sysProjFile = projfile              try:
610                    projfile, warnings = get_system_proj_file(name)
611                    self.show_warnings(_("Warnings"), projfile.GetFilename(),
612                                       warnings)
613                    self._sys_proj_files[name] = projfile
614                finally:
615                    ThubanEndBusyCursor()
616            return self._sys_proj_files[name]
617    
618          projfile, warnings = get_user_proj_file()      def write_proj_file(self, proj_file):
619          self.show_warnings(_("Warnings"), projfile.GetFilename(), warnings)          """Write the ProjFile object proj_file back to its file
620          for proj in projfile.GetProjections():  
621              self.availprojs.Append(proj.Label(), [proj, projfile])          Show a busy cursor while writing and if an error occurs show a
622          self.__usrProjFile = projfile          dialog with the error message.
623            """
624            try:
625                ThubanBeginBusyCursor()
626                try:
627                    write_proj_file(proj_file)
628                finally:
629                    ThubanEndBusyCursor()
630            except IOError, (errno, errstr):
631                self.__ShowError(proj_file.GetFilename(), errstr)
632    
         #  
         # We add the current projection to the list at last.  
         # Since the list is resorted immediately a following FindString()  
         # determines the index correctly.  
         #  
         proj = self.receiver.GetProjection()  
         if proj is not None:  
             proj_item = _("%s (current)") % proj.Label()  
             self.availprojs.Append(proj_item, [proj, None])  
             if selectCurrent:  
                 self.availprojs.SetSelection(  
                         self.availprojs.FindString(proj_item)  
                     )  
         else:  
             if selectCurrent:  
                 self.availprojs.SetSelection(  
                         self.availprojs.FindString("<None>")  
                     )  
         if selectProj:  
             self.availprojs.SetSelection(  
                         self.availprojs.FindString(selectProj)  
                     )  
633    
634    
635  class ProjPanel(wxPanel):  class ProjPanel(wxPanel):
# Line 621  class ProjPanel(wxPanel): Line 639  class ProjPanel(wxPanel):
639          wxPanel.__init__(self, parent, -1)          wxPanel.__init__(self, parent, -1)
640    
641          self.__ellps = wxChoice(self, -1)          self.__ellps = wxChoice(self, -1)
642          self.ellpsData = [("airy"  , _("Airy")),          self.ellpsData = [("", _("<Unknown>")),
643                              ("airy"  , _("Airy")),
644                            ("bessel", _("Bessel 1841")),                            ("bessel", _("Bessel 1841")),
645                            ("clrk66", _("Clarke 1866")),                            ("clrk66", _("Clarke 1866")),
646                            ("clrk80", _("Clarke 1880")),                            ("clrk80", _("Clarke 1880")),
647                            ("GRS80" , _("GRS 1980 (IUGG, 1980)")),                            ("GRS80" , _("GRS 1980 (IUGG, 1980)")),
648                            ("intl"  , _("International 1909 (Hayford)")),                            ("intl"  , _("International 1909 (Hayford)")),
# Line 669  class ProjPanel(wxPanel): Line 688  class ProjPanel(wxPanel):
688          self.__ellps.SetSelection(0)          self.__ellps.SetSelection(0)
689    
690      def GetParameters(self):      def GetParameters(self):
691          return ["ellps=" + self.__ellps.GetClientData(          ellps = self.__ellps.GetSelection()
692                                          self.__ellps.GetSelection())]          if ellps > 0:
693                return ["ellps=" + self.__ellps.GetClientData(ellps)]
694            return []
695    
696    
697  ID_TMPANEL_LAT = 4001  ID_TMPANEL_LAT = 4001
# Line 686  class UnknownProjPanel(ProjPanel): Line 707  class UnknownProjPanel(ProjPanel):
707      def __init__(self, parent, receiver):      def __init__(self, parent, receiver):
708          ProjPanel.__init__(self, parent)          ProjPanel.__init__(self, parent)
709    
710            self.__text = _("Thuban does not know the parameters\n"
711                            "for the current projection and cannot\n"
712                            "display a configuration panel.\n\n"
713                            "The unidentified set of parameters is:\n\n")
714    
715            self.__textbox = wxTextCtrl(self, -1, self.__text, size=(100,200),
716                                style=wxTE_READONLY|wxTE_MULTILINE|wxTE_LINEWRAP)
717          self._DoLayout()          self._DoLayout()
718    
719      def _DoLayout(self):      def _DoLayout(self):
720          sizer = wxBoxSizer(wxVERTICAL)          sizer = wxBoxSizer(wxVERTICAL)
721    
722          sizer.Add(wxStaticText(self, -1,          sizer.Add(self.__textbox, 0, wxALL|wxEXPAND, 4)
                                _("Thuban does not know the parameters\n"  
                                  "for the current projection and cannot\n"  
                                  "display a configuration panel.")))  
723    
724          ProjPanel._DoLayout(self, sizer)          ProjPanel._DoLayout(self, sizer)
725    
# Line 702  class UnknownProjPanel(ProjPanel): Line 727  class UnknownProjPanel(ProjPanel):
727          return "Unknown"          return "Unknown"
728    
729      def SetProjection(self, proj):      def SetProjection(self, proj):
730          pass          """Append the available parameters to the info text."""
731            text = self.__text
732            for param in proj.GetAllParameters():
733                text = text + '%s\n' % param
734            self.__textbox.SetValue(text)
735    
736      def GetParameters(self):      def GetParameters(self):
737          return None          return None
# Line 715  class TMPanel(ProjPanel): Line 744  class TMPanel(ProjPanel):
744    
745          self.__latitude = wxTextCtrl(self, ID_TMPANEL_LAT)          self.__latitude = wxTextCtrl(self, ID_TMPANEL_LAT)
746          self.__longitude = wxTextCtrl(self, ID_TMPANEL_LONG)          self.__longitude = wxTextCtrl(self, ID_TMPANEL_LONG)
         self.__scale = wxTextCtrl(self, ID_TMPANEL_SCALE)  
747          self.__falseEast = wxTextCtrl(self, ID_TMPANEL_FASLE_EAST)          self.__falseEast = wxTextCtrl(self, ID_TMPANEL_FASLE_EAST)
748          self.__falseNorth = wxTextCtrl(self, ID_TMPANEL_FALSE_NORTH)          self.__falseNorth = wxTextCtrl(self, ID_TMPANEL_FALSE_NORTH)
749            self.__scale = wxTextCtrl(self, ID_TMPANEL_SCALE)
750    
751          self._DoLayout()          self._DoLayout()
752    
# Line 852  class LCCPanel(ProjPanel): Line 881  class LCCPanel(ProjPanel):
881                    
882          self.__fspLatitude = wxTextCtrl(self, -1)          self.__fspLatitude = wxTextCtrl(self, -1)
883          self.__sspLatitude = wxTextCtrl(self, -1)          self.__sspLatitude = wxTextCtrl(self, -1)
         self.__originLat   = wxTextCtrl(self, -1)  
884          self.__meridian    = wxTextCtrl(self, -1)          self.__meridian    = wxTextCtrl(self, -1)
885            self.__originLat   = wxTextCtrl(self, -1)
886          self.__falseEast   = wxTextCtrl(self, -1)          self.__falseEast   = wxTextCtrl(self, -1)
887          self.__falseNorth  = wxTextCtrl(self, -1)          self.__falseNorth  = wxTextCtrl(self, -1)
888    
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