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# Copyright (c) 2003 by Intevation GmbH |
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# Authors: |
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# Jonathan Coles <[email protected]> |
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# Frank Koormann <[email protected]> |
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# Jan-Oliver Wagner <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with Thuban for details. |
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|
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"""Projection dialog""" |
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|
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__version__ = "$Revision$" |
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# $Source$ |
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# $Id$ |
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|
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import os |
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from wxPython.wx import * |
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|
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from Thuban import _ |
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|
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from Thuban.Model.proj import Projection, ProjFile |
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|
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from Thuban.Model.resource import get_user_proj_file, get_system_proj_file, \ |
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read_proj_file, write_proj_file, \ |
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DEFAULT_PROJ_FILE, EPSG_PROJ_FILE, \ |
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EPSG_DEPRECATED_PROJ_FILE |
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from Thuban.UI.dialogs import NonModalNonParentDialog |
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|
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from common import ThubanBeginBusyCursor, ThubanEndBusyCursor |
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from sizers import NotebookLikeSizer |
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from projlist import PROJ_SELECTION_CHANGED, ProjectionList |
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from common import ThubanBeginBusyCursor, ThubanEndBusyCursor |
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|
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|
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|
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ID_PROJ_PROJCHOICE = 4002 |
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ID_PROJ_ADDTOLIST = 4003 |
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ID_PROJ_NEW = 4004 |
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ID_PROJ_REVERT = 4006 |
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ID_PROJ_AVAIL = 4009 |
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ID_PROJ_SAVE = 4010 |
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ID_PROJ_IMPORT = 4011 |
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ID_PROJ_EXPORT = 4012 |
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ID_PROJ_REMOVE = 4013 |
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ID_PROJ_PROJNAME = 4014 |
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|
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CLIENT_PROJ = 0 |
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CLIENT_PROJFILE = 1 |
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|
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class ProjFrame(NonModalNonParentDialog): |
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|
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def __init__(self, parent, name, title, receiver): |
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"""Initialize the projection dialog. |
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|
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receiver -- An object that implements the following methods: |
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SetProjection(projection) |
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GetProjection() |
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""" |
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NonModalNonParentDialog.__init__(self, parent, name, title) |
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|
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self.projection_panel_defs = [ |
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("tmerc", _("Transverse Mercator"), TMPanel), |
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("utm", _("Universal Transverse Mercator"), UTMPanel), |
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("lcc", _("Lambert Conic Conformal"), LCCPanel), |
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("latlong", _("Geographic"), GeoPanel), |
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("longlat", _("Geographic"), GeoPanel)]#longlat is an alias of proj |
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self.receiver = receiver |
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self.haveTried = False |
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self.curProjPanel = None |
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self.__usrProjFile = None |
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self._sys_proj_files = {} |
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|
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self.build_dialog() |
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self.Layout() |
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|
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self.originalProjection = self.receiver.GetProjection() |
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|
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self.projection_list.SelectProjection(self.originalProjection) |
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self.projection_list.SetFocus() |
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|
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def build_dialog(self): |
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"""Build the dialog's widgets and set the event handlers""" |
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self.topBox = top_box = wxBoxSizer(wxVERTICAL) |
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|
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main_box = wxBoxSizer(wxHORIZONTAL) |
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top_box.Add(main_box, 1, wxALL|wxEXPAND) |
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|
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# |
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# The projection list and associated controls |
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# |
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vbox = wxBoxSizer(wxVERTICAL) |
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main_box.Add(vbox, 4, wxALL|wxEXPAND) |
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|
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#label = wxStaticText(self, -1, _("Available Projections:")) |
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#vbox.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4) |
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|
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hbox = wxBoxSizer(wxHORIZONTAL) |
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vbox.Add(hbox, 1, wxALL|wxEXPAND) |
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proj_files = [self.load_user_proj(), |
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self.load_system_proj(DEFAULT_PROJ_FILE)] |
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self.projection_list = ProjectionList(self, proj_files, |
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self.receiver.GetProjection()) |
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hbox.Add(self.projection_list, 1, wxALL|wxEXPAND|wxADJUST_MINSIZE, 4) |
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self.projection_list.Subscribe(PROJ_SELECTION_CHANGED, |
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self.proj_selection_changed) |
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|
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# Projection List specific actions (Import/Export/Remove) |
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buttons = wxBoxSizer(wxVERTICAL) |
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hbox.Add(buttons, 0, wxALL) |
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self.button_import = wxButton(self, ID_PROJ_IMPORT, _("Import...")) |
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EVT_BUTTON(self, ID_PROJ_IMPORT, self._OnImport) |
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buttons.Add(self.button_import, 1, wxALL|wxEXPAND, 4) |
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self.button_export = wxButton(self, ID_PROJ_EXPORT, _("Export...")) |
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EVT_BUTTON(self, ID_PROJ_EXPORT, self._OnExport) |
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buttons.Add(self.button_export, 1, wxALL|wxEXPAND, 4) |
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buttons.Add(20, 20, 0, wxEXPAND, 0) |
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self.button_remove = wxButton(self, ID_PROJ_REMOVE, _("Remove")) |
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EVT_BUTTON(self, ID_PROJ_REMOVE, self._OnRemove) |
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buttons.Add(self.button_remove, 1, wxALL|wxEXPAND, 4) |
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|
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buttons.Add(20, 20, 0, wxEXPAND, 0) |
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label = wxStaticText(self, -1, _("Show EPSG:")) |
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buttons.Add(label, 0, wxLEFT|wxRIGHT|wxTOP, 4) |
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self.check_epsg = wxCheckBox(self, -1, _("Normal")) |
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EVT_CHECKBOX(self, self.check_epsg.GetId(), self._OnShowEPSG) |
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buttons.Add(self.check_epsg, 1, wxALL|wxEXPAND, 4) |
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self.check_epsg_depr = wxCheckBox(self, -1, _("Deprecated")) |
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EVT_CHECKBOX(self, self.check_epsg_depr.GetId(), self._OnShowEPSG) |
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buttons.Add(self.check_epsg_depr, 1, wxALL|wxEXPAND, 4) |
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|
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# The file path |
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self.projfilepath = wxStaticText(self, -1, "") |
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vbox.Add(self.projfilepath, 0, wxALL|wxEXPAND) |
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|
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# |
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# The projection editor part |
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# |
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self.edit_box = wxStaticBox(self, -1, _("Edit")) |
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sizer_edit = wxStaticBoxSizer(self.edit_box, wxHORIZONTAL) |
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main_box.Add(sizer_edit, 5, wxALL|wxEXPAND) |
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|
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# Projection Specific Entries (Name/Projection) |
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self.sizer_projctrls = wxBoxSizer(wxVERTICAL) |
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sizer_edit.Add(self.sizer_projctrls, 1, wxALL|wxEXPAND) |
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|
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hbox = wxBoxSizer(wxHORIZONTAL) |
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self.sizer_projctrls.Add(hbox, 0, wxALL|wxEXPAND) |
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label = wxStaticText(self, -1, _("Name:")) |
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hbox.Add(label, 0, wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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self.projname = wxTextCtrl(self, ID_PROJ_PROJNAME, "") |
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EVT_TEXT(self, ID_PROJ_PROJNAME, self._OnProjName) |
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hbox.Add(self.projname, 1, wxALL|wxEXPAND, 4) |
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|
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hbox = wxBoxSizer(wxHORIZONTAL) |
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self.sizer_projctrls.Add(hbox, 0, wxALL|wxEXPAND) |
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label = wxStaticText(self, -1, _("Projection:")) |
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hbox.Add(label, 0, wxALL|wxALIGN_CENTER_VERTICAL, 4) |
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self.projchoice = wxChoice(self, ID_PROJ_PROJCHOICE) |
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self.projchoice.SetSelection(0) |
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EVT_CHOICE(self, ID_PROJ_PROJCHOICE, self._OnProjChoice) |
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hbox.Add(self.projchoice, 1, wxALL|wxEXPAND, 4) |
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# Fill the projection choice list. |
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self.nbsizer = NotebookLikeSizer() |
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self.sizer_projctrls.Add(self.nbsizer, 1, |
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wxALL|wxEXPAND|wxADJUST_MINSIZE, 3) |
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self.projection_panels = [] |
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self.projchoice.Append(_("<Unknown>"), "") |
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for proj_type, name, cls in self.projection_panel_defs: |
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self.projchoice.Append(name, proj_type) |
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panel = cls(self, self.receiver) |
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panel.Hide() |
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panel.projection_index = len(self.projection_panels) |
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panel.projection_type = proj_type |
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self.projection_panels.append(panel) |
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self.nbsizer.Add(panel) |
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self.unknown_projection_panel = UnknownProjPanel(self, self.receiver) |
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self.unknown_projection_panel.Hide() |
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self.nbsizer.Add(self.unknown_projection_panel) |
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|
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# Projection Specific actions (New/Save/Add) |
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buttons = wxBoxSizer(wxVERTICAL) |
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sizer_edit.Add(buttons, 0, wxALL) |
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self.button_new = wxButton(self, ID_PROJ_NEW, _("New")) |
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EVT_BUTTON(self, ID_PROJ_NEW, self._OnNew) |
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buttons.Add(self.button_new, 0, wxEXPAND|wxALL, 4) |
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self.button_add = wxButton(self, ID_PROJ_ADDTOLIST, _("Add to List")) |
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EVT_BUTTON(self, ID_PROJ_ADDTOLIST, self._OnAddToList) |
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buttons.Add(self.button_add, 0, wxEXPAND|wxALL, 4) |
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buttons.Add(20, 20, 0, wxEXPAND, 0) |
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self.button_save = wxButton(self, ID_PROJ_SAVE,_("Update")) |
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EVT_BUTTON(self, ID_PROJ_SAVE, self._OnSave) |
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buttons.Add(self.button_save, 0, wxEXPAND|wxALL|wxALIGN_BOTTOM, 4) |
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|
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# |
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# Main Action buttons (Try/Revert/OK/Close) |
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# |
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buttons = wxBoxSizer(wxHORIZONTAL) |
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top_box.Add(buttons, 0, wxALL|wxALIGN_RIGHT, 10) |
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self.button_try = wxButton(self, wxID_APPLY, _("Try")) |
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EVT_BUTTON(self, wxID_APPLY, self.OnApply) |
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buttons.Add(self.button_try, 0, wxRIGHT, 10) |
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self.button_revert = wxButton(self, ID_PROJ_REVERT, _("Revert")) |
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EVT_BUTTON(self, ID_PROJ_REVERT, self._OnRevert) |
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buttons.Add(self.button_revert, 0, wxRIGHT, 10) |
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self.button_ok = wxButton(self, wxID_OK, _("OK")) |
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EVT_BUTTON(self, wxID_OK, self.OnOK) |
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self.button_ok.SetDefault() |
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buttons.Add(self.button_ok, 0, wxRIGHT, 10) |
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self.button_close = wxButton(self, wxID_CANCEL, _("Close")) |
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EVT_BUTTON(self, wxID_CANCEL, self.OnCancel) |
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buttons.Add(self.button_close, 0, wxRIGHT, 10) |
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|
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|
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# |
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# Automatic Layout |
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# |
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self.SetAutoLayout(1) |
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self.SetSizer(top_box) |
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top_box.Fit(self) |
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top_box.SetSizeHints(self) |
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|
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def OnClose(self, event): |
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self.projection_list.Unsubscribe(PROJ_SELECTION_CHANGED, |
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self.proj_selection_changed) |
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# Destroy the projection list explicitly so that it properly |
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# unsubscribes everything. It would be cleaner if the projection |
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# could do this by itself but wx doesn't always send destroy |
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# events for non-top-level widgets |
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self.projection_list.Destroy() |
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NonModalNonParentDialog.OnClose(self, event) |
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|
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def OnApply(self, event): |
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self.__SetProjection() |
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self.haveTried = True |
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|
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def OnOK(self, event): |
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self.__SetProjection() |
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self.Close() |
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|
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def OnCancel(self, event): |
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"""Cancel just closes the dialog, but we call it cancel so we |
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can overload the functionality of wxDialog. |
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""" |
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self.Close() |
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|
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def _OnRevert(self, event): |
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if self.haveTried: |
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self.receiver.SetProjection(self.originalProjection) |
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self.haveTried = False |
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|
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def _OnNew(self, event): |
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|
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self.projection_list.ClearSelection() |
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self.projname.Clear() |
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|
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# supply a projection panel if there wasn't one |
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if self.curProjPanel is None: |
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self.projchoice.SetSelection(0) |
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self.__DoOnProjChoice() |
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|
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if self.curProjPanel is not None: |
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self.curProjPanel.Clear() |
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|
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def _OnSave(self, event): |
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|
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sel = self.projection_list.selected_projections() |
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assert len(sel) == 1, "button shouldn't be enabled" |
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|
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proj, projfile = sel[0] |
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|
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assert proj is not None and projfile is not None |
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|
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newproj = self.__GetProjection() |
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|
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if newproj is not None: |
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# FIXME: we should only allow this for the user proj file. |
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projfile.Replace(proj, newproj) |
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self.write_proj_file(projfile) |
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self.projection_list.SelectProjection(newproj) |
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|
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def _OnAddToList(self, event): |
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|
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proj = self.__GetProjection() |
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if proj is not None: |
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self.__usrProjFile.Add(proj) |
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self.write_proj_file(self.__usrProjFile) |
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self.projection_list.SelectProjection(proj) |
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|
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def show_warnings(self, title, filename, warnings): |
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"""Show the warnings (a list of strings) in a dialog |
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|
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If the list is empty no dialog will be shown. |
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""" |
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if warnings: |
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text = (_('Warnings when reading "%s":\n\n%s') |
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% (filename, "\n\n".join(warnings))) |
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self.parent.RunMessageBox(title, text) |
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|
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def _OnImport(self, event): |
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"""Handler for the 'Import' button |
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|
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Ask the user for a filename, read the projections from that file |
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add them to the user ProjFile object and write the user file |
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back to disk. |
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""" |
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dlg = wxFileDialog(self, _("Import"), |
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self.parent.application.Path("projection"), style = wxOPEN) |
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|
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if dlg.ShowModal() == wxID_OK: |
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path = dlg.GetPath() |
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|
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ThubanBeginBusyCursor() |
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try: |
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try: |
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projFile, warnings = read_proj_file(path) |
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except IOError, (errno, errstr): |
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self.__ShowError(dlg.GetPath(), errstr) |
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else: |
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self.show_warnings(_("Warnings"), path, warnings) |
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for proj in projFile.GetProjections(): |
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self.__usrProjFile.Add(proj) |
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self.write_proj_file(self.__usrProjFile) |
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self.parent.application.SetPath("projection", path) |
| 324 |
finally: |
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ThubanEndBusyCursor() |
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dlg.Destroy() |
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|
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def _OnExport(self, event): |
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"""Handler for the 'Export' button. |
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|
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Ask the user for a filename and write the selected projections |
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to that file. |
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""" |
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sel = self.projection_list.selected_projections() |
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assert len(sel) != 0, "button should be disabled" |
| 336 |
|
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dlg = wxFileDialog(self, _("Export"), |
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self.parent.application.Path("projection"), |
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style=wxSAVE|wxOVERWRITE_PROMPT) |
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|
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if dlg.ShowModal() == wxID_OK: |
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proj_file = ProjFile(dlg.GetPath()) |
| 343 |
for proj, pf in sel: |
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if proj is not None: |
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proj_file.Add(proj) |
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self.write_proj_file(proj_file) |
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self.parent.application.SetPath("projection", dlg.GetPath()) |
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|
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dlg.Destroy() |
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|
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def _OnRemove(self, event): |
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"""Handler for the 'Remove' button |
| 353 |
|
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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!" |
| 360 |
|
| 361 |
modified = False |
| 362 |
for proj, pf in sel: |
| 363 |
if proj is not None and pf is self.__usrProjFile: |
| 364 |
pf.Remove(proj) |
| 365 |
modified = True |
| 366 |
|
| 367 |
if modified: |
| 368 |
self.write_proj_file(self.__usrProjFile) |
| 369 |
|
| 370 |
def _OnShowEPSG(self, event): |
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"""Handler for the EVT_CHECKBOX events from the EPSG check button |
| 372 |
|
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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): |
| 385 |
self.__VerifyButtons() |
| 386 |
|
| 387 |
def __ShowError(self, filename, errstr): |
| 388 |
wxMessageDialog(self, |
| 389 |
_("The following error occured:\n") + |
| 390 |
filename + "\n" + errstr, |
| 391 |
_("Error"), wxOK | wxICON_ERROR).ShowModal() |
| 392 |
|
| 393 |
def __VerifyButtons(self): |
| 394 |
"""Update button sensitivity""" |
| 395 |
|
| 396 |
num_sel = self.projection_list.GetSelectedItemCount() |
| 397 |
|
| 398 |
self.button_import.Enable(True) |
| 399 |
self.button_export.Enable(True) |
| 400 |
self.button_save.Enable(True) |
| 401 |
self.button_remove.Enable(True) |
| 402 |
|
| 403 |
self.edit_box.Enable(True) |
| 404 |
|
| 405 |
for ctrl in [self.button_import, |
| 406 |
self.button_export, |
| 407 |
self.button_remove, |
| 408 |
self.button_save, |
| 409 |
self.button_add, |
| 410 |
self.projchoice, |
| 411 |
self.projname, |
| 412 |
self.edit_box]: |
| 413 |
ctrl.Enable(True) |
| 414 |
|
| 415 |
if self.curProjPanel is not None: |
| 416 |
self.curProjPanel.Enable(True) |
| 417 |
|
| 418 |
if num_sel == 0: |
| 419 |
self.button_import.Enable(True) |
| 420 |
self.button_export.Enable(False) |
| 421 |
self.button_remove.Enable(False) |
| 422 |
self.button_save.Enable(False) |
| 423 |
|
| 424 |
elif num_sel == 1: |
| 425 |
|
| 426 |
selection = self.projection_list.selected_projections() |
| 427 |
proj, projFile = selection[0] |
| 428 |
|
| 429 |
self.button_save.Enable(len(self.projname.GetValue()) > 0) |
| 430 |
self.button_add.Enable(len(self.projname.GetValue()) > 0) |
| 431 |
|
| 432 |
if proj is None: |
| 433 |
# <None> is selected |
| 434 |
for ctrl in [self.button_export, |
| 435 |
self.button_remove, |
| 436 |
self.button_save, |
| 437 |
self.button_add, |
| 438 |
self.projchoice, |
| 439 |
self.projname]: |
| 440 |
ctrl.Enable(False) |
| 441 |
|
| 442 |
if self.curProjPanel is not None: |
| 443 |
self.curProjPanel.Enable(False) |
| 444 |
|
| 445 |
elif proj is self.originalProjection: |
| 446 |
self.button_remove.Enable(False) |
| 447 |
|
| 448 |
if projFile is None: |
| 449 |
self.button_save.Enable(False) |
| 450 |
|
| 451 |
else: |
| 452 |
self.edit_box.Enable(False) |
| 453 |
|
| 454 |
def proj_selection_changed(self, projs): |
| 455 |
"""Subscribed to the projection_list's PROJ_SELECTION_CHANGED message |
| 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: |
| 464 |
# user selected <None> |
| 465 |
self.projname.Clear() |
| 466 |
self.projfilepath.SetLabel("") |
| 467 |
else: |
| 468 |
if projfile is not None: |
| 469 |
filename = os.path.basename(projfile.GetFilename()) |
| 470 |
self.projfilepath.SetLabel(_("Source of Projection: %s") |
| 471 |
% filename) |
| 472 |
else: |
| 473 |
# only None if the currently used projection is selected |
| 474 |
self.projfilepath.SetLabel("") |
| 475 |
|
| 476 |
self.projname.SetValue(proj.Label()) |
| 477 |
|
| 478 |
myProjType = proj.GetParameter("proj") |
| 479 |
i = 0 |
| 480 |
for projType, name, cls in self.projection_panel_defs: |
| 481 |
if myProjType == projType: |
| 482 |
self.projchoice.Enable(True) |
| 483 |
self.projchoice.SetSelection(i + 1) |
| 484 |
self.__DoOnProjChoice() |
| 485 |
|
| 486 |
# |
| 487 |
# self.curProjPanel should not be null |
| 488 |
# after a call to __DoOnProjChoice |
| 489 |
# |
| 490 |
assert self.curProjPanel is not None |
| 491 |
|
| 492 |
self.curProjPanel.SetProjection(proj) |
| 493 |
break |
| 494 |
i += 1 |
| 495 |
else: |
| 496 |
self.projchoice.Select(0) |
| 497 |
self.projchoice.Disable() |
| 498 |
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() |
| 505 |
|
| 506 |
def _OnProjChoice(self, event): |
| 507 |
self.__DoOnProjChoice() |
| 508 |
|
| 509 |
def __DoOnProjChoice(self): |
| 510 |
"""Create and layout a projection panel based on the selected |
| 511 |
projection type. |
| 512 |
|
| 513 |
This is necessary to have in seperate method since calls to |
| 514 |
wxChoice.SetSelection() do not trigger an event. |
| 515 |
|
| 516 |
At the end of this method self.curProjPanel will not be None |
| 517 |
if there was a item selected. |
| 518 |
""" |
| 519 |
choice = self.projchoice |
| 520 |
|
| 521 |
sel = choice.GetSelection() |
| 522 |
if sel != -1: |
| 523 |
proj_type = choice.GetClientData(sel) |
| 524 |
for t, name, cls in self.projection_panel_defs: |
| 525 |
if t == proj_type: |
| 526 |
self._show_proj_panel(cls) |
| 527 |
break |
| 528 |
# FIXME: what to do if sel == -1? |
| 529 |
|
| 530 |
def _show_proj_panel(self, panel_class): |
| 531 |
"""Show the panel as the projection panel""" |
| 532 |
if panel_class is UnknownProjPanel: |
| 533 |
self.edit_box.Disable() |
| 534 |
self.nbsizer.Activate(self.unknown_projection_panel) |
| 535 |
self.curProjPanel = self.unknown_projection_panel |
| 536 |
else: |
| 537 |
self.edit_box.Enable(True) |
| 538 |
self.unknown_projection_panel.Hide() |
| 539 |
for panel in self.projection_panels: |
| 540 |
if panel.__class__ is panel_class: |
| 541 |
self.nbsizer.Activate(panel) |
| 542 |
self.curProjPanel = panel |
| 543 |
|
| 544 |
def __SetProjection(self): |
| 545 |
"""Set the receiver's projection.""" |
| 546 |
|
| 547 |
# |
| 548 |
# save the original projection only once in case |
| 549 |
# we try to apply several different projections |
| 550 |
# |
| 551 |
self.receiver.SetProjection(self.__GetProjection()) |
| 552 |
|
| 553 |
def __GetProjection(self): |
| 554 |
"""Return a suitable Projection object based on the current |
| 555 |
state of the dialog box selections. |
| 556 |
|
| 557 |
Could be None. |
| 558 |
""" |
| 559 |
|
| 560 |
assert self.projection_list.GetSelectedItemCount() < 2, \ |
| 561 |
"button should be disabled" |
| 562 |
|
| 563 |
sel = self.projection_list.selected_projections() |
| 564 |
if len(sel) == 1: |
| 565 |
if sel[0][0] is None: |
| 566 |
# <None> is selected |
| 567 |
return None |
| 568 |
|
| 569 |
# self.curProjPanel should always contain the most relevant data |
| 570 |
# for a projection |
| 571 |
if self.curProjPanel is not None: |
| 572 |
return Projection(self.curProjPanel.GetParameters(), |
| 573 |
self.projname.GetValue()) |
| 574 |
|
| 575 |
return None |
| 576 |
|
| 577 |
def load_user_proj(self): |
| 578 |
"""Return the user's ProjFile |
| 579 |
|
| 580 |
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 |
|
| 585 |
If the file is not available, leave a note to the console. |
| 586 |
""" |
| 587 |
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 |
Show a busy cursor while loading the file. |
| 606 |
""" |
| 607 |
if name not in self._sys_proj_files: |
| 608 |
ThubanBeginBusyCursor() |
| 609 |
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 |
def write_proj_file(self, proj_file): |
| 619 |
"""Write the ProjFile object proj_file back to its file |
| 620 |
|
| 621 |
Show a busy cursor while writing and if an error occurs show a |
| 622 |
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 |
|
| 633 |
|
| 634 |
|
| 635 |
class ProjPanel(wxPanel): |
| 636 |
"""Base class for all projection panels.""" |
| 637 |
|
| 638 |
def __init__(self, parent): |
| 639 |
wxPanel.__init__(self, parent, -1) |
| 640 |
|
| 641 |
self.__ellps = wxChoice(self, -1) |
| 642 |
self.ellpsData = [("", _("<Unknown>")), |
| 643 |
("airy" , _("Airy")), |
| 644 |
("bessel", _("Bessel 1841")), |
| 645 |
("clrk66", _("Clarke 1866")), |
| 646 |
("clrk80", _("Clarke 1880")), |
| 647 |
("GRS80" , _("GRS 1980 (IUGG, 1980)")), |
| 648 |
("intl" , _("International 1909 (Hayford)")), |
| 649 |
("WGS84" , _("WGS 84"))] |
| 650 |
|
| 651 |
for tag, name in self.ellpsData: |
| 652 |
self.__ellps.Append(name, tag) |
| 653 |
|
| 654 |
self.__ellps.SetSelection(0) |
| 655 |
|
| 656 |
def _DoLayout(self, childPanel = None): |
| 657 |
|
| 658 |
panelSizer = wxBoxSizer(wxVERTICAL) |
| 659 |
|
| 660 |
sizer = wxBoxSizer(wxHORIZONTAL) |
| 661 |
sizer.Add(wxStaticText(self, -1, _("Ellipsoid:")), 0, |
| 662 |
wxALL|wxALIGN_CENTER_VERTICAL, 4) |
| 663 |
sizer.Add(self.__ellps, 1, wxALL|wxALIGN_CENTER_VERTICAL, 4) |
| 664 |
panelSizer.Add(sizer, 0, wxALL|wxEXPAND, 4) |
| 665 |
|
| 666 |
if childPanel is not None: |
| 667 |
panelSizer.Add(childPanel, 0, wxEXPAND, 0) |
| 668 |
|
| 669 |
self.SetAutoLayout(1) |
| 670 |
self.SetSizer(panelSizer) |
| 671 |
panelSizer.Fit(self) |
| 672 |
panelSizer.SetSizeHints(self) |
| 673 |
self.Layout() |
| 674 |
|
| 675 |
def SetProjection(self, proj): |
| 676 |
if proj is not None: |
| 677 |
param = proj.GetParameter("ellps") |
| 678 |
i = 0 |
| 679 |
for tag, name in self.ellpsData: |
| 680 |
if param == tag: |
| 681 |
self.__ellps.SetSelection(i) |
| 682 |
return # returning early! |
| 683 |
i += 1 |
| 684 |
|
| 685 |
# |
| 686 |
# if proj is none, or the parameter couldn't be found... |
| 687 |
# |
| 688 |
self.__ellps.SetSelection(0) |
| 689 |
|
| 690 |
def GetParameters(self): |
| 691 |
ellps = self.__ellps.GetSelection() |
| 692 |
if ellps > 0: |
| 693 |
return ["ellps=" + self.__ellps.GetClientData(ellps)] |
| 694 |
return [] |
| 695 |
|
| 696 |
|
| 697 |
ID_TMPANEL_LAT = 4001 |
| 698 |
ID_TMPANEL_LONG = 4002 |
| 699 |
ID_TMPANEL_FASLE_EAST = 4003 |
| 700 |
ID_TMPANEL_FALSE_NORTH = 4004 |
| 701 |
ID_TMPANEL_SCALE = 4005 |
| 702 |
|
| 703 |
class UnknownProjPanel(ProjPanel): |
| 704 |
|
| 705 |
"""Panel for unknown projection types""" |
| 706 |
|
| 707 |
def __init__(self, parent, receiver): |
| 708 |
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() |
| 718 |
|
| 719 |
def _DoLayout(self): |
| 720 |
sizer = wxBoxSizer(wxVERTICAL) |
| 721 |
|
| 722 |
sizer.Add(self.__textbox, 0, wxALL|wxEXPAND, 4) |
| 723 |
|
| 724 |
ProjPanel._DoLayout(self, sizer) |
| 725 |
|
| 726 |
def GetProjName(self): |
| 727 |
return "Unknown" |
| 728 |
|
| 729 |
def SetProjection(self, proj): |
| 730 |
"""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): |
| 737 |
return None |
| 738 |
|
| 739 |
class TMPanel(ProjPanel): |
| 740 |
"""Projection panel for Transverse Mercator.""" |
| 741 |
|
| 742 |
def __init__(self, parent, receiver): |
| 743 |
ProjPanel.__init__(self, parent) |
| 744 |
|
| 745 |
self.__latitude = wxTextCtrl(self, ID_TMPANEL_LAT) |
| 746 |
self.__longitude = wxTextCtrl(self, ID_TMPANEL_LONG) |
| 747 |
self.__falseEast = wxTextCtrl(self, ID_TMPANEL_FASLE_EAST) |
| 748 |
self.__falseNorth = wxTextCtrl(self, ID_TMPANEL_FALSE_NORTH) |
| 749 |
self.__scale = wxTextCtrl(self, ID_TMPANEL_SCALE) |
| 750 |
|
| 751 |
self._DoLayout() |
| 752 |
|
| 753 |
def _DoLayout(self): |
| 754 |
|
| 755 |
sizer = wxFlexGridSizer(4, 2, 0, 0) |
| 756 |
sizer.Add(wxStaticText(self, -1, _("Latitude:")), 0, wxALL, 4) |
| 757 |
sizer.Add(self.__latitude, 0, wxALL, 4) |
| 758 |
sizer.Add(wxStaticText(self, -1, _("Longitude:")), 0, wxALL, 4) |
| 759 |
sizer.Add(self.__longitude, 0, wxALL, 4) |
| 760 |
sizer.Add(wxStaticText(self, -1, _("False Easting:")), 0, wxALL, 4) |
| 761 |
sizer.Add(self.__falseEast, 0, wxALL, 4) |
| 762 |
sizer.Add(wxStaticText(self, -1, _("False Northing:")), 0, wxALL, 4) |
| 763 |
sizer.Add(self.__falseNorth, 0, wxALL, 4) |
| 764 |
sizer.Add(wxStaticText(self, -1, _("Scale Factor:")), 0, wxALL, 4) |
| 765 |
sizer.Add(self.__scale, 0, wxALL, 4) |
| 766 |
|
| 767 |
ProjPanel._DoLayout(self, sizer) |
| 768 |
|
| 769 |
def GetProjName(self): |
| 770 |
return _("Transverse Mercator") |
| 771 |
|
| 772 |
def SetProjection(self, proj): |
| 773 |
ProjPanel.SetProjection(self, proj) |
| 774 |
|
| 775 |
self.__latitude.SetValue(proj.GetParameter("lat_0")) |
| 776 |
self.__longitude.SetValue(proj.GetParameter("lon_0")) |
| 777 |
self.__falseEast.SetValue(proj.GetParameter("x_0")) |
| 778 |
self.__falseNorth.SetValue(proj.GetParameter("y_0")) |
| 779 |
self.__scale.SetValue(proj.GetParameter("k")) |
| 780 |
|
| 781 |
ProjPanel.SetProjection(self, proj) |
| 782 |
|
| 783 |
def GetParameters(self): |
| 784 |
params = ["proj=tmerc", |
| 785 |
"lat_0=" + self.__latitude.GetValue(), |
| 786 |
"lon_0=" + self.__longitude.GetValue(), |
| 787 |
"x_0=" + self.__falseEast.GetValue(), |
| 788 |
"y_0=" + self.__falseNorth.GetValue(), |
| 789 |
"k=" + self.__scale.GetValue()] |
| 790 |
params.extend(ProjPanel.GetParameters(self)) |
| 791 |
return params |
| 792 |
|
| 793 |
def Clear(self): |
| 794 |
self.__latitude.Clear() |
| 795 |
self.__longitude.Clear() |
| 796 |
self.__falseEast.Clear() |
| 797 |
self.__falseNorth.Clear() |
| 798 |
self.__scale.Clear() |
| 799 |
|
| 800 |
ProjPanel.Clear(self) |
| 801 |
|
| 802 |
ID_UTMPANEL_ZONE = 4001 |
| 803 |
ID_UTMPANEL_SOUTH = 4002 |
| 804 |
ID_UTMPANEL_PROP = 4003 |
| 805 |
|
| 806 |
class UTMPanel(ProjPanel): |
| 807 |
"""Projection Panel for Universal Transverse Mercator.""" |
| 808 |
|
| 809 |
def __init__(self, parent, receiver): |
| 810 |
ProjPanel.__init__(self, parent) |
| 811 |
|
| 812 |
self.receiver = receiver |
| 813 |
|
| 814 |
self.__zone = wxSpinCtrl(self, ID_UTMPANEL_ZONE, "1", min=1, max=60) |
| 815 |
self.__propButton = wxButton(self, ID_UTMPANEL_PROP, _("Propose")) |
| 816 |
self.__south = wxCheckBox(self, ID_UTMPANEL_SOUTH, |
| 817 |
_("Southern Hemisphere")) |
| 818 |
|
| 819 |
self._DoLayout() |
| 820 |
|
| 821 |
EVT_BUTTON(self, ID_UTMPANEL_PROP, self._OnPropose) |
| 822 |
|
| 823 |
def _DoLayout(self): |
| 824 |
|
| 825 |
sizer = wxBoxSizer(wxVERTICAL) |
| 826 |
psizer = wxBoxSizer(wxHORIZONTAL) |
| 827 |
psizer.Add(wxStaticText(self, -1, _("Zone:")), 0, wxALL, 4) |
| 828 |
psizer.Add(self.__zone, 0, wxALL, 4) |
| 829 |
psizer.Add(self.__propButton, 0, wxALL, 4) |
| 830 |
sizer.Add(psizer, 0, wxALL, 4) |
| 831 |
sizer.Add(self.__south, 0, wxALL, 4) |
| 832 |
|
| 833 |
ProjPanel._DoLayout(self, sizer) |
| 834 |
|
| 835 |
def GetProjName(self): |
| 836 |
return _("Universal Transverse Mercator") |
| 837 |
|
| 838 |
def SetProjection(self, proj): |
| 839 |
self.__zone.SetValue(int(proj.GetParameter("zone"))) |
| 840 |
self.__south.SetValue(proj.GetParameter("south") != "") |
| 841 |
ProjPanel.SetProjection(self, proj) |
| 842 |
|
| 843 |
def GetParameters(self): |
| 844 |
params = ["proj=utm", "zone=" + str(self.__zone.GetValue())] |
| 845 |
if self.__south.IsChecked(): |
| 846 |
params.append("south") |
| 847 |
|
| 848 |
params.extend(ProjPanel.GetParameters(self)) |
| 849 |
return params |
| 850 |
|
| 851 |
def Clear(self): |
| 852 |
self.__zone.SetValue(1) |
| 853 |
self.__south.SetValue(False) |
| 854 |
ProjPanel.Clear(self) |
| 855 |
|
| 856 |
def _OnPropose(self, event): |
| 857 |
"""Call the propose dialog. |
| 858 |
If the receiver (e.g. the current map) has no bounding box, |
| 859 |
inform the user accordingly. |
| 860 |
""" |
| 861 |
bb = self.receiver.BoundingBox() |
| 862 |
if bb is None: |
| 863 |
dlg = wxMessageDialog(self, |
| 864 |
_("Can not propose: No bounding box found."), |
| 865 |
_("Projection: Propose UTM Zone"), |
| 866 |
wxOK | wxICON_INFORMATION) |
| 867 |
dlg.CenterOnParent() |
| 868 |
result = dlg.ShowModal() |
| 869 |
dlg.Destroy() |
| 870 |
return |
| 871 |
|
| 872 |
dlg = UTMProposeZoneDialog(self, self.receiver.BoundingBox()) |
| 873 |
if dlg.ShowModal() == wxID_OK: |
| 874 |
self.__zone.SetValue(dlg.GetProposedZone()) |
| 875 |
|
| 876 |
class LCCPanel(ProjPanel): |
| 877 |
"""Projection Panel for Lambert Conic Conformal.""" |
| 878 |
|
| 879 |
def __init__(self, parent, receiver): |
| 880 |
ProjPanel.__init__(self, parent) |
| 881 |
|
| 882 |
self.__fspLatitude = wxTextCtrl(self, -1) |
| 883 |
self.__sspLatitude = wxTextCtrl(self, -1) |
| 884 |
self.__meridian = wxTextCtrl(self, -1) |
| 885 |
self.__originLat = wxTextCtrl(self, -1) |
| 886 |
self.__falseEast = wxTextCtrl(self, -1) |
| 887 |
self.__falseNorth = wxTextCtrl(self, -1) |
| 888 |
|
| 889 |
self._DoLayout() |
| 890 |
|
| 891 |
def _DoLayout(self): |
| 892 |
|
| 893 |
sizer = wxFlexGridSizer(6, 2, 0, 0) |
| 894 |
sizer.Add(wxStaticText(self, -1, |
| 895 |
_("Latitude of first standard parallel:"))) |
| 896 |
sizer.Add(self.__fspLatitude, 0, wxALL, 4) |
| 897 |
sizer.Add(wxStaticText(self, -1, |
| 898 |
_("Latitude of second standard parallel:"))) |
| 899 |
sizer.Add(self.__sspLatitude, 0, wxALL, 4) |
| 900 |
sizer.Add(wxStaticText(self, -1, _("Central Meridian:"))) |
| 901 |
sizer.Add(self.__meridian, 0, wxALL, 4) |
| 902 |
sizer.Add(wxStaticText(self, -1, _("Latitude of origin:"))) |
| 903 |
sizer.Add(self.__originLat, 0, wxALL, 4) |
| 904 |
sizer.Add(wxStaticText(self, -1, _("False Easting:"))) |
| 905 |
sizer.Add(self.__falseEast, 0, wxALL, 4) |
| 906 |
sizer.Add(wxStaticText(self, -1, _("False Northing:"))) |
| 907 |
sizer.Add(self.__falseNorth, 0, wxALL, 4) |
| 908 |
|
| 909 |
ProjPanel._DoLayout(self, sizer) |
| 910 |
|
| 911 |
def GetProjName(self): |
| 912 |
return _("Lambert Conic Conformal") |
| 913 |
|
| 914 |
def SetProjection(self, proj): |
| 915 |
self.__fspLatitude.SetValue(proj.GetParameter("lat_1")) |
| 916 |
self.__sspLatitude.SetValue(proj.GetParameter("lat_2")) |
| 917 |
self.__originLat.SetValue(proj.GetParameter("lat_0")) |
| 918 |
self.__meridian.SetValue(proj.GetParameter("lon_0")) |
| 919 |
self.__falseEast.SetValue(proj.GetParameter("x_0")) |
| 920 |
self.__falseNorth.SetValue(proj.GetParameter("y_0")) |
| 921 |
|
| 922 |
ProjPanel.SetProjection(self, proj) |
| 923 |
|
| 924 |
def GetParameters(self): |
| 925 |
params = ["proj=lcc", |
| 926 |
"lat_1=" + self.__fspLatitude.GetValue(), |
| 927 |
"lat_2=" + self.__sspLatitude.GetValue(), |
| 928 |
"lat_0=" + self.__originLat.GetValue(), |
| 929 |
"lon_0=" + self.__meridian.GetValue(), |
| 930 |
"x_0=" + self.__falseEast.GetValue(), |
| 931 |
"y_0=" + self.__falseNorth.GetValue()] |
| 932 |
|
| 933 |
params.extend(ProjPanel.GetParameters(self)) |
| 934 |
return params |
| 935 |
|
| 936 |
def Clear(self): |
| 937 |
self.__fspLatitude.Clear() |
| 938 |
self.__sspLatitude.Clear() |
| 939 |
self.__originLat.Clear() |
| 940 |
self.__meridian.Clear() |
| 941 |
self.__falseEast.Clear() |
| 942 |
self.__falseNorth.Clear() |
| 943 |
|
| 944 |
ProjPanel.Clear(self) |
| 945 |
|
| 946 |
class GeoPanel(ProjPanel): |
| 947 |
"""Projection Panel for a Geographic Projection.""" |
| 948 |
|
| 949 |
def __init__(self, parent, receiver): |
| 950 |
ProjPanel.__init__(self, parent) |
| 951 |
|
| 952 |
self.__choices = [(_("Degrees"), "0.017453"), |
| 953 |
(_("Radians"), "1")] |
| 954 |
|
| 955 |
self.__scale = wxChoice(self, -1) |
| 956 |
for choice, value in self.__choices: |
| 957 |
self.__scale.Append(choice, value) |
| 958 |
|
| 959 |
self._DoLayout() |
| 960 |
|
| 961 |
def GetProjName(self): |
| 962 |
return _("Geographic") |
| 963 |
|
| 964 |
def SetProjection(self, proj): |
| 965 |
value = proj.GetParameter("to_meter") |
| 966 |
for i in range(len(self.__choices)): |
| 967 |
choice, data = self.__choices[i] |
| 968 |
if value == data: |
| 969 |
self.__scale.SetSelection(i) |
| 970 |
ProjPanel.SetProjection(self, proj) |
| 971 |
|
| 972 |
def GetParameters(self): |
| 973 |
params = ["proj=latlong", |
| 974 |
"to_meter=%s" % self.__scale.GetClientData( |
| 975 |
self.__scale.GetSelection())] |
| 976 |
|
| 977 |
params.extend(ProjPanel.GetParameters(self)) |
| 978 |
return params |
| 979 |
|
| 980 |
def Clear(self): |
| 981 |
ProjPanel.Clear(self) |
| 982 |
|
| 983 |
def _DoLayout(self): |
| 984 |
sizer = wxBoxSizer(wxHORIZONTAL) |
| 985 |
|
| 986 |
sizer.Add(wxStaticText(self, -1, _("Source Data is in: ")), |
| 987 |
0, wxALL|wxALIGN_CENTER_VERTICAL, 4) |
| 988 |
sizer.Add(self.__scale, 1, wxEXPAND|wxALL, 4) |
| 989 |
|
| 990 |
self.__scale.SetSelection(0) |
| 991 |
|
| 992 |
ProjPanel._DoLayout(self, sizer) |
| 993 |
|
| 994 |
|
| 995 |
ID_UTM_PROPOSE_ZONE_DIALOG_TAKE = 4001 |
| 996 |
ID_UTM_PROPOSE_ZONE_DIALOG_CANCEL = 4002 |
| 997 |
class UTMProposeZoneDialog(wxDialog): |
| 998 |
|
| 999 |
"""Propose a sensible Zone considering the current map extent.""" |
| 1000 |
|
| 1001 |
def __init__(self, parent, (x, y, x2, y2)): |
| 1002 |
wxDialog.__init__(self, parent, -1, _("Projection: Propose UTM Zone"), |
| 1003 |
wxDefaultPosition, wxSize(200, 100)) |
| 1004 |
self.parent = parent |
| 1005 |
x = x + 180 |
| 1006 |
x2 = x2 + 180 |
| 1007 |
center = (x2 - x) / 2 + x |
| 1008 |
self.proposedZone = int(center / 6 + 1) |
| 1009 |
self.dialogLayout() |
| 1010 |
|
| 1011 |
def dialogLayout(self): |
| 1012 |
topBox = wxBoxSizer(wxVERTICAL) |
| 1013 |
|
| 1014 |
textBox = wxBoxSizer(wxVERTICAL) |
| 1015 |
textBox.Add(wxStaticText(self, -1, _("The current map extent center " |
| 1016 |
"lies in UTM Zone")), |
| 1017 |
0, wxALIGN_CENTER|wxALL, 4) |
| 1018 |
textBox.Add(wxStaticText(self, -1, str(self.proposedZone)), |
| 1019 |
0, wxALIGN_CENTER|wxALL, 4) |
| 1020 |
|
| 1021 |
topBox.Add(textBox, 1, wxEXPAND|wxALL, 4) |
| 1022 |
|
| 1023 |
buttonBox = wxBoxSizer(wxHORIZONTAL) |
| 1024 |
buttonBox.Add(wxButton(self, ID_UTM_PROPOSE_ZONE_DIALOG_TAKE, |
| 1025 |
_("Take")), 0, wxALL, 4) |
| 1026 |
buttonBox.Add(wxButton(self, ID_UTM_PROPOSE_ZONE_DIALOG_CANCEL, |
| 1027 |
_("Cancel")), 0, wxALL, 4) |
| 1028 |
topBox.Add(buttonBox, 0, wxALIGN_CENTER_HORIZONTAL|wxALL, 10) |
| 1029 |
EVT_BUTTON(self, ID_UTM_PROPOSE_ZONE_DIALOG_TAKE, self.OnTake) |
| 1030 |
EVT_BUTTON(self, ID_UTM_PROPOSE_ZONE_DIALOG_CANCEL, self.OnCancel) |
| 1031 |
|
| 1032 |
self.SetAutoLayout(True) |
| 1033 |
self.SetSizer(topBox) |
| 1034 |
topBox.Fit(self) |
| 1035 |
topBox.SetSizeHints(self) |
| 1036 |
|
| 1037 |
def OnTake(self, event): |
| 1038 |
self.EndModal(wxID_OK) |
| 1039 |
|
| 1040 |
def OnCancel(self, event): |
| 1041 |
self.EndModal(wxID_CANCEL) |
| 1042 |
|
| 1043 |
def GetProposedZone(self): |
| 1044 |
return self.proposedZone |
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