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# Copyright (c) 2004 by Intevation GmbH |
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# Authors: |
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# Nina Hüffmeyer <[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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__version__ = "$Revision$" |
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# $Source$ |
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# $Id$ |
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|
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# Needed wx-toolkit classes |
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from wxPython.wx import wxFileDialog, wxOPEN, wxMULTIPLE, wxID_OK |
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|
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# We need os.path |
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import os |
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|
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# use _() already now for all strings that may later be translated |
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from Thuban import _ |
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|
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from Thuban.Model.layer import Layer |
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|
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# Import ogr related classes |
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from Extensions.ogr import ogrshapes, ogrdialog |
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from Extensions.ogr.ogrdialog import ChooseOGRDBTableDialog |
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|
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from Thuban.UI.menu import Menu |
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from Thuban.UI.mainwindow import _has_dbconnections, _has_gdal_support |
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|
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def open_with_ogr(context): |
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'''Open a file supported by ogr. |
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''' |
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canvas = context.mainwindow.canvas |
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map = canvas.Map() |
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|
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# Get the file to be opened |
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dlg = wxFileDialog(canvas, _("Select a data file"), |
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context.application.Path("data"), "", |
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_("Shapefiles (*.shp)") + "|*.shp|" + |
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_("GML files (*.gml)") + "|*.gml|" + |
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_("MapInfo files (*.tab)") + "|*.tab|" + |
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_("DGN files (*.dgn)") + "|*.dgn|" + |
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_("CSV files (*.csv)") + "|*.csv|" + |
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_("All Files (*.*)") + "|*.*|", |
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wxOPEN | wxMULTIPLE) |
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|
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if dlg.ShowModal() == wxID_OK: |
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filenames = dlg.GetPaths() |
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for filename in filenames: |
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title = os.path.splitext(os.path.basename(filename))[0] |
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has_layers = map.HasLayers() |
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layerDlg = ogrdialog.ChooseLayer(canvas, filename) |
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if layerDlg.ShowModal() == wxID_OK: |
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layername = layerDlg.GetLayer() |
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try: |
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session = context.application.Session() |
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store = OpenFileShapestore(session, filename, layername) |
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session.AddShapeStore(store) |
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except: |
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# the layer couldn't be opened |
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context.mainwindow.RunMessageBox(("Add Layer"), |
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("Can't open the file '%s'.")%filename) |
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else: |
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if store is not None: |
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layer = Layer(title, store) |
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map.AddLayer(layer) |
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if not has_layers: |
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# if we're adding a layer to an empty map, fit the |
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# new map to the window |
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canvas.FitMapToWindow() |
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context.application.SetPath("data",filename) |
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dlg.Destroy() |
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|
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def select_file_format(context): |
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''' Display all available supported formats. |
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''' |
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|
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canvas = context.mainwindow.canvas |
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file = None |
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map = canvas.Map() |
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|
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session = context.application.Session() |
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|
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dlg = ogrdialog.ChooseFileFormat(canvas, session) |
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|
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if dlg.ShowModal() == wxID_OK: |
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pass |
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dlg.Destroy() |
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|
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def open_db(context): |
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''' Open a table in a database as a layer. |
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''' |
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|
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canvas = context.mainwindow.canvas |
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map = canvas.Map() |
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|
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session = context.application.Session() |
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dlg = ChooseOGRDBTableDialog(canvas, session) |
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|
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if dlg.ShowModal() == wxID_OK: |
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dbconn, connString, dbtable, id_column = dlg.GetTable() |
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try: |
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store = OpenDBShapestore(session, dbconn, dbtable, id_column, |
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None) |
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session.AddShapeStore(store) |
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|
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layer = Layer(dbtable, store) |
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|
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has_layers = map.HasLayers() |
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map.AddLayer(layer) |
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if not has_layers: |
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canvas.FitMapToWindow() |
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except: |
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# Some error occured while initializing the layer |
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context.mainwindow.RunMessageBox(_("Add Layer from database"), |
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_("Can't open the database table '%s'") |
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% dbtable) |
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dlg.Destroy() |
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|
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def open_OGRConnection(context): |
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"""Open a datasource with an OGRConnection string.""" |
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canvas = context.mainwindow.canvas |
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map = canvas.Map() |
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|
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session = context.application.Session() |
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dlg = ogrdialog.OGRConnectionDialog(canvas, session) |
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|
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if dlg.ShowModal() == wxID_OK: |
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dsname = dlg.GetDatasourceName() |
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|
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layerDlg = ogrdialog.ChooseLayer(canvas, dsname) |
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if layerDlg.ShowModal() == wxID_OK: |
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layername = layerDlg.GetLayer() |
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try: |
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store = ogrshapes.OGRShapeStore(session, dsname, layername) |
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session.AddShapeStore(store) |
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except: |
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# the layer couldn't be opened |
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context.mainwindow.RunMessageBox(("Add Layer"), |
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("Can't open the file '%s'.") % dsname) |
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else: |
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layer = Layer(dsname, store) |
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has_layers = map.HasLayers() |
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map.AddLayer(layer) |
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if not has_layers: |
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# if we're adding a layer to an empty map, fit the |
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# new map to the window |
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canvas.FitMapToWindow() |
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dlg.Destroy() |
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|
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def OpenFileShapestore(session, filename, layername): |
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"""Open a datasource and add the required layer. |
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""" |
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try: |
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store = ogrshapes.OGRShapeStore(session, filename, layername) |
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return store |
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except: |
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# Some error occured while initializing the layer |
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context.mainwindow.RunMessageBox(_("Open datasource"), |
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_("Can't open the datasource '%s'") |
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% filename) |
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else: |
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return null |
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|
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def OpenDBShapestore(session, dbconn, layername, id_column, geo_column): |
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"""Open a datasource and add the required layer. |
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|
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dbconn - shold be a DBConnection |
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layername - the name of the table which should opened as layer |
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id_column - the column name which should be used as ID column |
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geo_column - always None for ogr |
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""" |
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try: |
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filename = "PG: dbname=%s" %dbconn.dbname |
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if dbconn.host is not "": |
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filename = filename + " host=%s" % dbconn.host |
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if dbconn.user is not "": |
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filename = filename + " user=%s" % dbconn.user |
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if dbconn.password is not "": |
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filename = filename + " password=%s" % dbconn.password |
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if dbconn.port is not "": |
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filename = filename + " port=%s" % dbconn.port |
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store = ogrshapes.OGRShapeStore(session, filename, layername, |
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id_column = id_column) |
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return store |
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except: |
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# Some error occured while initializing the layer |
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context.mainwindow.RunMessageBox(_("Open datasource"), |
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_("Can't open the datasource '%s'") |
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% filename) |
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|
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# Thuban has named commands which can be registered in the central |
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# instance registry. |
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from Thuban.UI.command import registry, Command |
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|
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# The instance of the main menu of the Thuban application |
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# See Thuban/UI/menu.py for the API of the Menu class |
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from Thuban.UI.mainwindow import main_menu |
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|
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|
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# find the map menu (create a new if not found) |
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map_menu = main_menu.FindOrInsertMenu('map', _('Map')) |
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ogr_menu = Menu("ogr", _("Open layer via OGR"),[]) |
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|
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ogrsupport = ogrshapes.has_ogr_support() |
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|
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# create new commands and register them |
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registry.Add(Command('open_ogr_files', 'Open an ogr-file', open_with_ogr, |
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sensitive = _has_gdal_support, |
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helptext = 'Open a file supported from ogr')) |
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|
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#registry.Add(Command('select_file_format', 'Select a file format', |
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# select_file_format, |
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# helptext = "Select a file format supported from ogr")) |
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|
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registry.Add(Command('open_db', 'Open a layer from a database', |
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open_db, |
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sensitive = _has_dbconnections, |
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helptext = "Open a layer from a database, e.g. PostGIS")) |
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|
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registry.Add(Command('open_OGRConnection', |
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("Open a datasource with an OGRConnection string"), |
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open_OGRConnection, |
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sensitive = _has_gdal_support, helptext = |
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"Open a datasource with an OGRConnection string")) |
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|
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# finally bind the new command with an entry in the extensions menu |
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ogr_menu.InsertItem("open_ogr_files") |
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#ogr_menu.InsertItem('select_file_format') |
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ogr_menu.InsertItem('open_db') |
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ogr_menu.InsertItem('open_OGRConnection') |
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|
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# Add ogr menu to map menu |
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map_menu.InsertItem(ogr_menu, after = "rasterlayer_add") |
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