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# Copyright (C) 2001 by Intevation GmbH |
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# Authors: |
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# Jan-Oliver Wagner <[email protected]> |
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# Bernhard Herzog <[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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The main window |
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""" |
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__version__ = "$Revision$" |
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import sys, os |
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from wxPython.wx import * |
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import Thuban |
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from Thuban.Model.session import Session |
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from Thuban.Model.map import Map |
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from Thuban.Model.layer import Layer |
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from Thuban.Model.color import Color |
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from Thuban.Model.proj import Projection |
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import view |
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import tree |
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import proj4dialog |
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import tableview, identifyview |
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import main |
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from command import registry, Command |
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# the directory where the toolbar icons are stored |
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bitmapdir = os.path.join(Thuban.__path__[0], os.pardir, "Resources", "Bitmaps") |
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bitmapext = ".xpm" |
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class MainWindow(wxFrame): |
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def __init__(self, parent, ID, interactor): |
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wxFrame.__init__(self, parent, ID, 'Thuban', |
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wxDefaultPosition, wxSize(400, 300)) |
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self.CreateStatusBar() |
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self.SetStatusText("This is the wxPython-based " |
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"Graphical User Interface for exploring geographic data") |
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self.identify_view = None |
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self.init_ids() |
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menuBar = wxMenuBar() |
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menu = wxMenu() |
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menuBar.Append(menu, "&File"); |
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for name in ["new_session", "open_session", None, |
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"save_session", "save_session_as", None, |
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"exit"]: |
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self.add_menu_command(menu, name) |
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menu = wxMenu() |
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menuBar.Append(menu, "&Map"); |
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for name in ["map_projection", |
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None, |
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"map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool", |
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"map_identify_tool", "map_label_tool", |
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None, |
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"map_full_extent", |
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None, |
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"map_print"]: |
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self.add_menu_command(menu, name) |
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menu = wxMenu() |
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menuBar.Append(menu, "&Layer"); |
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for name in ["layer_add", "layer_remove", |
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None, |
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"layer_fill_color", "layer_transparent_fill", |
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"layer_ourline_color", "layer_no_outline", |
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None, |
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"layer_raise", "layer_lower", |
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None, |
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"layer_show", "layer_hide", |
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None, |
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"layer_show_table"]: |
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self.add_menu_command(menu, name) |
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menu = wxMenu() |
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menuBar.Append(menu, "&Help"); |
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self.add_menu_command(menu, "help_about") |
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self.SetMenuBar(menuBar) |
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# toolbar |
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toolbar = self.CreateToolBar(wxTB_3DBUTTONS) |
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for name in ["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool", |
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"map_identify_tool", "map_label_tool"]: |
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self.add_toolbar_command(toolbar, name) |
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# call Realize to make sure that the tools appear. |
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toolbar.Realize() |
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# Create the map canvas |
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canvas = view.MapCanvas(self, -1, interactor) |
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self.canvas = canvas |
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EVT_CLOSE(self, self.OnClose) |
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def init_ids(self): |
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"""Initialize the ids""" |
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self.current_id = 6000 |
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self.id_to_name = {} |
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self.name_to_id = {} |
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def get_id(self, name): |
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"""Return the wxWindows id for the command named name. |
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Create a new one if there isn't one yet""" |
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ID = self.name_to_id.get(name) |
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if ID is None: |
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ID = self.current_id |
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self.current_id = self.current_id + 1 |
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self.name_to_id[name] = ID |
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self.id_to_name[ID] = name |
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return ID |
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def add_menu_command(self, menu, name): |
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"""Add the command with name name to the menu menu. |
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If name is None, add a separator. |
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""" |
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if name is None: |
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menu.AppendSeparator() |
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else: |
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command = registry.Command(name) |
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if command is not None: |
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ID = self.get_id(name) |
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menu.Append(ID, command.Title(), command.HelpText(), |
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command.IsCheckCommand()) |
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EVT_MENU(self, ID, self.invoke_command) |
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if command.IsDynamic(): |
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EVT_UPDATE_UI(self, ID, self.update_command_ui) |
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else: |
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print "Unknown command %s" % name |
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def add_toolbar_command(self, toolbar, name): |
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"""Add the command with name name to the toolbar toolbar. |
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If name is None, add a separator. |
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""" |
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# Assume that all toolbar commands are also menu commmands so |
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# that we don't have to add the event handlers here |
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if name is None: |
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toolbar.AddSeparator() |
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else: |
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command = registry.Command(name) |
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if command is not None: |
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ID = self.get_id(name) |
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filename = os.path.join(bitmapdir, command.Icon()) + bitmapext |
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bitmap = wxBitmap(filename, wxBITMAP_TYPE_XPM) |
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toolbar.AddTool(ID, bitmap, |
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shortHelpString = command.HelpText(), |
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isToggle = command.IsCheckCommand()) |
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else: |
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print "Unknown command %s" % name |
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def invoke_command(self, event): |
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name = self.id_to_name.get(event.GetId()) |
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if name is not None: |
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command = registry.Command(name) |
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command.Execute(self) |
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else: |
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print "Unknown command ID %d" % event.GetId() |
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def update_command_ui(self, event): |
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#print "update_command_ui", self.id_to_name[event.GetId()] |
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command = registry.Command(self.id_to_name[event.GetId()]) |
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if command is not None: |
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event.Enable(command.Sensitive(self)) |
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event.SetText(command.DynText(self)) |
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if command.IsCheckCommand(): |
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event.Check(command.Checked(self)) |
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def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION): |
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"""Run a modla message box with the given text, title and flags |
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and return the result""" |
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dlg = wxMessageDialog(self, text, title, flags) |
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result = dlg.ShowModal() |
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dlg.Destroy() |
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return result |
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def NewSession(self): |
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session = Session("") |
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session.AddMap(Map("")) |
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main.app.SetSession(session) |
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def OpenSession(self): |
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dlg = wxFileDialog(self, "Select a session file", ".", "", |
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"*.session", wxOPEN) |
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if dlg.ShowModal() == wxID_OK: |
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main.app.OpenSession(dlg.GetPath()) |
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dlg.Destroy() |
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def SaveSession(self): |
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main.app.SaveSession() |
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def SaveSessionAs(self): |
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dlg = wxFileDialog(self, "Enter a filename for session", ".", "", |
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"*.session", wxOPEN) |
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if dlg.ShowModal() == wxID_OK: |
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main.app.session.SetFilename(dlg.GetPath()) |
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main.app.SaveSession() |
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dlg.Destroy() |
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def Exit(self): |
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self.Close(false) |
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def OnClose(self, event): |
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veto = 0 |
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if main.app.session.WasModified(): |
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flags = wxYES_NO | wxICON_QUESTION |
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if event.CanVeto(): |
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flags = flags | wxCANCEL |
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result = self.RunMessageBox("Exit", |
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("The session has been modified." |
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" Do you want to save it?"), |
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flags) |
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if result == wxID_YES: |
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self.SaveSession() |
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elif result == wxID_CANCEL: |
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veto = 1 |
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if veto: |
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event.Veto() |
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else: |
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self.Destroy() |
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def SetMap(self, map): |
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self.canvas.SetMap(map) |
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def About(self): |
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self.RunMessageBox("About", |
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("Thuban is a program for\n" |
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"exploring geographic data.\n" |
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"Copyright (C) 2001 Intevation GmbH.\n" |
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"Thuban is licensed under the GPL"), |
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wxOK | wxICON_INFORMATION) |
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def AddLayer(self): |
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dlg = wxFileDialog(self, "Select a session file", ".", "", "*.*", |
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wxOPEN) |
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if dlg.ShowModal() == wxID_OK: |
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filename = dlg.GetPath() |
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title = os.path.splitext(os.path.basename(filename))[0] |
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layer = Layer(title, filename) |
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map = self.canvas.Map() |
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has_layers = map.HasLayers() |
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try: |
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map.AddLayer(layer) |
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except IOError: |
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# the layer couldn't be opened |
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self.RunMessageBox("Add Layer", |
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"Can't open the file '%s'." % filename) |
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else: |
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if not has_layers: |
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# if we're adding a layer to an empty map, for the |
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# new map to the window |
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self.canvas.FitMapToWindow() |
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dlg.Destroy() |
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def RemoveLayer(self): |
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layer = self.current_layer() |
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if layer is not None: |
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self.canvas.Map().RemoveLayer(layer) |
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def RaiseLayer(self): |
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layer = self.current_layer() |
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if layer is not None: |
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self.canvas.Map().RaiseLayer(layer) |
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def LowerLayer(self): |
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layer = self.current_layer() |
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if layer is not None: |
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self.canvas.Map().LowerLayer(layer) |
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def current_layer(self): |
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"""Return the currently selected layer. |
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If no layer is selected, return None |
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""" |
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tree = main.app.tree.tree |
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layer = tree.GetPyData(tree.GetSelection()) |
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if isinstance(layer, Layer): |
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return layer |
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return None |
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def has_selected_layer(self): |
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"""Return true if a layer is currently selected""" |
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tree = main.app.tree.tree |
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layer = tree.GetPyData(tree.GetSelection()) |
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return isinstance(layer, Layer) |
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def choose_color(self): |
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"""Run the color selection dialog and return the selected color. |
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If the user cancels, return None. |
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""" |
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dlg = wxColourDialog(self) |
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color = None |
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if dlg.ShowModal() == wxID_OK: |
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data = dlg.GetColourData() |
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wxc = data.GetColour() |
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color = Color(wxc.Red() / 255.0, |
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wxc.Green() / 255.0, |
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wxc.Blue() / 255.0) |
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dlg.Destroy() |
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return color |
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def LayerFillColor(self): |
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layer = self.current_layer() |
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if layer is not None: |
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color = self.choose_color() |
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if color is not None: |
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layer.SetFill(color) |
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def LayerTransparentFill(self): |
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layer = self.current_layer() |
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if layer is not None: |
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layer.SetFill(None) |
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def LayerOutlineColor(self): |
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layer = self.current_layer() |
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if layer is not None: |
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color = self.choose_color() |
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if color is not None: |
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layer.SetStroke(color) |
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def LayerNoOutline(self): |
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layer = self.current_layer() |
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if layer is not None: |
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layer.SetStroke(None) |
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def HideLayer(self): |
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layer = self.current_layer() |
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if layer is not None: |
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layer.SetVisible(0) |
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def ShowLayer(self): |
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layer = self.current_layer() |
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if layer is not None: |
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layer.SetVisible(1) |
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def LayerShowTable(self): |
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layer = self.current_layer() |
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if layer is not None: |
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tv = tableview.TableFrame(self, layer.table) |
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tv.Show(true) |
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def Projection(self): |
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map = self.canvas.Map() |
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proj = map.projection |
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if proj is None: |
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proj4Dlg = proj4dialog.Proj4Dialog(NULL, None) |
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else: |
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proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params) |
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if proj4Dlg.ShowModal() == wxID_OK: |
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params = proj4Dlg.GetParams() |
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if params is not None: |
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proj = Projection(params) |
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else: |
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proj = None |
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map.SetProjection(proj) |
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proj4Dlg.Destroy() |
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def ZoomInTool(self): |
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self.canvas.ZoomInTool() |
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def ZoomOutTool(self): |
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self.canvas.ZoomOutTool() |
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def PanTool(self): |
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self.canvas.PanTool() |
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def IdentifyTool(self): |
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if self.identify_view is None: |
| 386 |
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|
self.identify_view = identifyview.IdentifyView(self, main.app) |
| 387 |
|
|
self.identify_view.Show(true) |
| 388 |
|
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self.canvas.IdentifyTool() |
| 389 |
|
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|
| 390 |
|
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def LabelTool(self): |
| 391 |
|
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self.canvas.LabelTool() |
| 392 |
|
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|
| 393 |
|
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def FullExtent(self): |
| 394 |
|
|
self.canvas.FitMapToWindow() |
| 395 |
|
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|
| 396 |
|
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def PrintMap(self): |
| 397 |
|
|
self.canvas.Print() |
| 398 |
|
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|
| 399 |
|
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|
| 400 |
|
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# |
| 401 |
|
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# Define all the commands available in the main window |
| 402 |
|
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# |
| 403 |
|
|
|
| 404 |
|
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|
| 405 |
|
|
# Helper functions to define common command implementations |
| 406 |
|
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def call_method(context, methodname, *args): |
| 407 |
|
|
"""Call the context's method methodname with args *args""" |
| 408 |
|
|
apply(getattr(context, methodname), args) |
| 409 |
|
|
|
| 410 |
|
|
def _method_command(name, title, method, helptext = "", sensitive = None): |
| 411 |
|
|
"""Add a command implemented by a method of the context object""" |
| 412 |
|
|
registry.Add(Command(name, title, call_method, args=(method,), |
| 413 |
|
|
helptext = helptext, sensitive = sensitive)) |
| 414 |
|
|
def _tool_command(name, title, method, toolname, helptext = "", |
| 415 |
|
|
icon = ""): |
| 416 |
|
|
"""Add a tool command""" |
| 417 |
|
|
def check_current_tool(context, name=toolname): |
| 418 |
|
|
return context.canvas.CurrentTool() == name |
| 419 |
|
|
registry.Add(Command(name, title, call_method, args=(method,), |
| 420 |
|
|
helptext = helptext, icon = icon, |
| 421 |
|
|
checked = check_current_tool)) |
| 422 |
|
|
|
| 423 |
|
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def _has_selected_layer(context): |
| 424 |
|
|
"""Return true if a layer is selected in the context""" |
| 425 |
|
|
return context.has_selected_layer() |
| 426 |
|
|
|
| 427 |
|
|
# File menu |
| 428 |
|
|
_method_command("new_session", "&New Session", "NewSession") |
| 429 |
|
|
_method_command("open_session", "&Open Session", "OpenSession") |
| 430 |
|
|
_method_command("save_session", "&Save Session", "SaveSession") |
| 431 |
|
|
_method_command("save_session_as", "Save Session &As", "SaveSessionAs") |
| 432 |
|
|
_method_command("exit", "&Exit", "Exit") |
| 433 |
|
|
|
| 434 |
|
|
# Help menu |
| 435 |
|
|
_method_command("help_about", "&About", "About") |
| 436 |
|
|
|
| 437 |
|
|
|
| 438 |
|
|
# Map menu |
| 439 |
|
|
_method_command("map_projection", "Pro&jection", "Projection") |
| 440 |
|
|
|
| 441 |
|
|
_tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool", |
| 442 |
|
|
helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in") |
| 443 |
|
|
_tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool", |
| 444 |
|
|
helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out") |
| 445 |
|
|
_tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool", |
| 446 |
|
|
helptext = "Switch to map-mode 'pan'", icon = "pan") |
| 447 |
|
|
_tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool", |
| 448 |
|
|
helptext = "Switch to map-mode 'identify'", icon = "identify") |
| 449 |
|
|
_tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool", |
| 450 |
|
|
helptext = "Add/Remove labels", icon = "label") |
| 451 |
|
|
_method_command("map_full_extent", "&Full extent", "FullExtent") |
| 452 |
|
|
_method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map") |
| 453 |
|
|
|
| 454 |
|
|
# Layer menu |
| 455 |
|
|
_method_command("layer_add", "&Add", "AddLayer", |
| 456 |
|
|
helptext = "Add a new layer to active map") |
| 457 |
|
|
_method_command("layer_remove", "&Remove", "RemoveLayer", |
| 458 |
|
|
helptext = "Remove selected layer(s)", |
| 459 |
|
|
sensitive = _has_selected_layer) |
| 460 |
|
|
_method_command("layer_fill_color", "&Fill Color", "LayerFillColor", |
| 461 |
|
|
helptext = "Set the fill color of selected layer(s)", |
| 462 |
|
|
sensitive = _has_selected_layer) |
| 463 |
|
|
_method_command("layer_transparent_fill", "&Transparent Fill", |
| 464 |
|
|
"LayerTransparentFill", |
| 465 |
|
|
helptext = "Do not fill the selected layer(s)", |
| 466 |
|
|
sensitive = _has_selected_layer) |
| 467 |
|
|
_method_command("layer_ourline_color", "&Outline Color", "LayerOutlineColor", |
| 468 |
|
|
helptext = "Set the outline color of selected layer(s)", |
| 469 |
|
|
sensitive = _has_selected_layer) |
| 470 |
|
|
_method_command("layer_no_outline", "&No Outline", "LayerNoOutline", |
| 471 |
|
|
helptext = "Do not draw the outline of the selected layer(s)", |
| 472 |
|
|
sensitive = _has_selected_layer) |
| 473 |
|
|
_method_command("layer_raise", "&Raise", "RaiseLayer", |
| 474 |
|
|
helptext = "Raise selected layer(s)", |
| 475 |
|
|
sensitive = _has_selected_layer) |
| 476 |
|
|
_method_command("layer_lower", "&Lower", "LowerLayer", |
| 477 |
|
|
helptext = "Lower selected layer(s)", |
| 478 |
|
|
sensitive = _has_selected_layer) |
| 479 |
|
|
_method_command("layer_show", "&Show", "ShowLayer", |
| 480 |
|
|
helptext = "Make selected layer(s) visible", |
| 481 |
|
|
sensitive = _has_selected_layer) |
| 482 |
|
|
_method_command("layer_hide", "&Hide", "HideLayer", |
| 483 |
|
|
helptext = "Make selected layer(s) unvisible", |
| 484 |
|
|
sensitive = _has_selected_layer) |
| 485 |
|
|
_method_command("layer_show_table", "Show Ta&ble", "LayerShowTable", |
| 486 |
|
|
helptext = "Show the selected layer's table", |
| 487 |
|
|
sensitive = _has_selected_layer) |
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| 
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