/[thuban]/branches/WIP-pyshapelib-bramz/Thuban/UI/projdialog.py
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revision 1854 by bh, Wed Oct 22 09:38:36 2003 UTC revision 2470 by bh, Thu Dec 16 11:00:10 2004 UTC
# Line 1  Line 1 
1  # Copyright (c) 2003 by Intevation GmbH  # Copyright (c) 2003, 2004 by Intevation GmbH
2  # Authors:  # Authors:
3  # Jonathan Coles <[email protected]>  # Jonathan Coles <[email protected]>
4  # Frank Koormann <[email protected]>  # Frank Koormann <[email protected]>
# 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  from common import ThubanBeginBusyCursor, ThubanEndBusyCursor
# Line 60  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          self.__usrProjFile = None
71          self.__sysProjFile = None          self._sys_proj_files = {}
72    
73          self.build_dialog()          self.build_dialog()
74          self.Layout()          self.Layout()
# Line 93  class ProjFrame(NonModalNonParentDialog) Line 96  class ProjFrame(NonModalNonParentDialog)
96    
97          hbox = wxBoxSizer(wxHORIZONTAL)          hbox = wxBoxSizer(wxHORIZONTAL)
98          vbox.Add(hbox, 1, wxALL|wxEXPAND)          vbox.Add(hbox, 1, wxALL|wxEXPAND)
99          self.projection_list = ProjectionList(self, self.load_system_proj(),          proj_files = [self.load_user_proj(),
100                                                self.load_user_proj(),                        self.load_system_proj(DEFAULT_PROJ_FILE)]
101            self.projection_list = ProjectionList(self, proj_files,
102                                                self.receiver.GetProjection())                                                self.receiver.GetProjection())
103          hbox.Add(self.projection_list, 1, wxALL|wxEXPAND|wxADJUST_MINSIZE, 4)          hbox.Add(self.projection_list, 1, wxALL|wxEXPAND|wxADJUST_MINSIZE, 4)
104          self.projection_list.Subscribe(PROJ_SELECTION_CHANGED,          self.projection_list.Subscribe(PROJ_SELECTION_CHANGED,
# Line 114  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 289  class ProjFrame(NonModalNonParentDialog) Line 303  class ProjFrame(NonModalNonParentDialog)
303          add them to the user ProjFile object and write the user file          add them to the user ProjFile object and write the user file
304          back to disk.          back to disk.
305          """          """
306          dlg = wxFileDialog(self, _("Import"), style = wxOPEN)          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()
# Line 305  class ProjFrame(NonModalNonParentDialog) Line 320  class ProjFrame(NonModalNonParentDialog)
320                      for proj in projFile.GetProjections():                      for proj in projFile.GetProjections():
321                          self.__usrProjFile.Add(proj)                          self.__usrProjFile.Add(proj)
322                      self.write_proj_file(self.__usrProjFile)                      self.write_proj_file(self.__usrProjFile)
323                        self.parent.application.SetPath("projection", path)
324              finally:              finally:
325                  ThubanEndBusyCursor()                  ThubanEndBusyCursor()
326          dlg.Destroy()          dlg.Destroy()
# Line 318  class ProjFrame(NonModalNonParentDialog) Line 334  class ProjFrame(NonModalNonParentDialog)
334          sel = self.projection_list.selected_projections()          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"), style=wxSAVE|wxOVERWRITE_PROMPT)          dlg = wxFileDialog(self, _("Export"),
338                    self.parent.application.Path("projection"),
339                    style=wxSAVE|wxOVERWRITE_PROMPT)
340    
341          if dlg.ShowModal() == wxID_OK:          if dlg.ShowModal() == wxID_OK:
342              proj_file = ProjFile(dlg.GetPath())              proj_file = ProjFile(dlg.GetPath())
# Line 326  class ProjFrame(NonModalNonParentDialog) Line 344  class ProjFrame(NonModalNonParentDialog)
344                  if proj is not None:                  if proj is not None:
345                      proj_file.Add(proj)                      proj_file.Add(proj)
346              self.write_proj_file(proj_file)              self.write_proj_file(proj_file)
347                self.parent.application.SetPath("projection", dlg.GetPath())
348    
349          dlg.Destroy()          dlg.Destroy()
350    
# Line 348  class ProjFrame(NonModalNonParentDialog) Line 367  class ProjFrame(NonModalNonParentDialog)
367          if modified:          if modified:
368              self.write_proj_file(self.__usrProjFile)              self.write_proj_file(self.__usrProjFile)
369    
370        def _OnShowEPSG(self, event):
371            """Handler for the EVT_CHECKBOX events from the EPSG check button
372    
373            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    
# Line 463  class ProjFrame(NonModalNonParentDialog) Line 496  class ProjFrame(NonModalNonParentDialog)
496                      self.projchoice.Select(0)                      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:          else:
502              self.projfilepath.SetLabel(_("Multiple Projections selected"))              self.projfilepath.SetLabel(_("Multiple Projections selected"))
503    
# Line 495  class ProjFrame(NonModalNonParentDialog) Line 530  class ProjFrame(NonModalNonParentDialog)
530      def _show_proj_panel(self, panel_class):      def _show_proj_panel(self, panel_class):
531          """Show the panel as the projection panel"""          """Show the panel as the projection panel"""
532          if panel_class is UnknownProjPanel:          if panel_class is UnknownProjPanel:
533                self.button_ok.Disable()
534                self.button_try.Disable()
535              self.edit_box.Disable()              self.edit_box.Disable()
536              self.nbsizer.Activate(self.unknown_projection_panel)              self.nbsizer.Activate(self.unknown_projection_panel)
537              self.curProjPanel = self.unknown_projection_panel              self.curProjPanel = self.unknown_projection_panel
538          else:          else:
539                self.button_ok.Enable(True)
540                self.button_try.Enable(True)
541              self.edit_box.Enable(True)              self.edit_box.Enable(True)
542              self.unknown_projection_panel.Hide()              self.unknown_projection_panel.Hide()
543              for panel in self.projection_panels:              for panel in self.projection_panels:
# Line 534  class ProjFrame(NonModalNonParentDialog) Line 573  class ProjFrame(NonModalNonParentDialog)
573          # self.curProjPanel should always contain the most relevant data          # self.curProjPanel should always contain the most relevant data
574          # for a projection          # for a projection
575          if self.curProjPanel is not None:          if self.curProjPanel is not None:
576              return Projection(self.curProjPanel.GetParameters(),              parameters = self.curProjPanel.GetParameters()
577                                self.projname.GetValue())              if parameters is not None:
578                    return Projection(parameters, self.projname.GetValue())
579    
580          return None          return None
581    
582      def load_user_proj(self):      def load_user_proj(self):
583          ThubanBeginBusyCursor()          """Return the user's ProjFile
584          try:  
585              if self.__usrProjFile is None:          If the file has not yet been loaded by the dialog, load it first
586            with get_user_proj_file and cache it in self.__usrProjFile.
587    
588            Show a busy cursor while loading the file.
589        
590            If the file is not available, leave a note to the console.
591            """
592            if self.__usrProjFile is None:
593                ThubanBeginBusyCursor()
594                try:
595                  projfile, warnings = get_user_proj_file()                  projfile, warnings = get_user_proj_file()
596                  self.show_warnings(_("Warnings"), projfile.GetFilename(),                  if warnings:
597                                     warnings)                      sys.stderr.write("".join(warnings))
598                  self.__usrProjFile = projfile                  self.__usrProjFile = projfile
599              return self.__usrProjFile              finally:
600          finally:                  ThubanEndBusyCursor()
601              ThubanEndBusyCursor()          return self.__usrProjFile
602    
603      def load_system_proj(self):      def load_system_proj(self, name):
604          ThubanBeginBusyCursor()          """Load the system ProjFile with the given name.
605          try:  
606              if self.__sysProjFile is None:          If the file has not been loaded yet, load it first with
607                  projfile, warnings = get_system_proj_file()          get_system_proj_file and put it into the cache. The name is
608            simply forwarded to get_system_proj_file.
609    
610            Show a busy cursor while loading the file.
611            """
612            if name not in self._sys_proj_files:
613                ThubanBeginBusyCursor()
614                try:
615                    projfile, warnings = get_system_proj_file(name)
616                  self.show_warnings(_("Warnings"), projfile.GetFilename(),                  self.show_warnings(_("Warnings"), projfile.GetFilename(),
617                                     warnings)                                     warnings)
618                  self.__sysProjFile = projfile                  self._sys_proj_files[name] = projfile
619              return self.__sysProjFile              finally:
620          finally:                  ThubanEndBusyCursor()
621              ThubanEndBusyCursor()          return self._sys_proj_files[name]
622    
623      def write_proj_file(self, proj_file):      def write_proj_file(self, proj_file):
624          """Write the ProjFile object proj_file back to its file          """Write the ProjFile object proj_file back to its file
# Line 655  class UnknownProjPanel(ProjPanel): Line 712  class UnknownProjPanel(ProjPanel):
712      def __init__(self, parent, receiver):      def __init__(self, parent, receiver):
713          ProjPanel.__init__(self, parent)          ProjPanel.__init__(self, parent)
714    
715            self.__text = _("Thuban does not know the parameters\n"
716                            "for the current projection and cannot\n"
717                            "display a configuration panel.\n\n"
718                            "The unidentified set of parameters is:\n\n")
719    
720            self.__textbox = wxTextCtrl(self, -1, self.__text, size=(100,200),
721                                style=wxTE_READONLY|wxTE_MULTILINE|wxTE_LINEWRAP)
722          self._DoLayout()          self._DoLayout()
723    
724      def _DoLayout(self):      def _DoLayout(self):
725          sizer = wxBoxSizer(wxVERTICAL)          sizer = wxBoxSizer(wxVERTICAL)
726    
727          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.")))  
728    
729          ProjPanel._DoLayout(self, sizer)          ProjPanel._DoLayout(self, sizer)
730    
# Line 671  class UnknownProjPanel(ProjPanel): Line 732  class UnknownProjPanel(ProjPanel):
732          return "Unknown"          return "Unknown"
733    
734      def SetProjection(self, proj):      def SetProjection(self, proj):
735          pass          """Append the available parameters to the info text."""
736            text = self.__text
737            for param in proj.GetAllParameters():
738                text = text + '%s\n' % param
739            self.__textbox.SetValue(text)
740    
741      def GetParameters(self):      def GetParameters(self):
742          return None          return None
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