| 1 |
# Copyright (C) 2001, 2002 by Intevation GmbH |
| 2 |
# Authors: |
| 3 |
# Jan-Oliver Wagner <[email protected]> |
| 4 |
# Bernhard Herzog <[email protected]> |
| 5 |
# |
| 6 |
# This program is free software under the GPL (>=v2) |
| 7 |
# Read the file COPYING coming with Thuban for details. |
| 8 |
|
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""" |
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The main window |
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""" |
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|
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__version__ = "$Revision$" |
| 14 |
|
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import os |
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|
| 17 |
from wxPython.wx import * |
| 18 |
|
| 19 |
import Thuban |
| 20 |
from Thuban.Model.session import create_empty_session |
| 21 |
from Thuban.Model.layer import Layer |
| 22 |
from Thuban.Model.color import Color |
| 23 |
from Thuban.Model.proj import Projection |
| 24 |
|
| 25 |
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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from menu import Menu |
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|
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import main |
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from command import registry, Command |
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from messages import SELECTED_SHAPE, VIEW_POSITION |
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|
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|
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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") |
| 38 |
bitmapext = ".xpm" |
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|
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|
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class MainWindow(wxFrame): |
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|
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def __init__(self, parent, ID, interactor): |
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wxFrame.__init__(self, parent, ID, 'Thuban', |
| 45 |
wxDefaultPosition, wxSize(400, 300)) |
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|
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self.interactor = interactor |
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|
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self.CreateStatusBar() |
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self.SetStatusText("This is the wxPython-based " |
| 51 |
"Graphical User Interface for exploring geographic data") |
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|
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self.identify_view = None |
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|
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self.init_ids() |
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|
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# creat the menubar from the main_menu description |
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self.SetMenuBar(self.build_menu_bar(main_menu)) |
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|
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# Similarly, create the toolbar from main_toolbar |
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toolbar = self.build_toolbar(main_toolbar) |
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# call Realize to make sure that the tools appear. |
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toolbar.Realize() |
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|
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# Create the map canvas |
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canvas = view.MapCanvas(self, -1, interactor) |
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canvas.Subscribe(VIEW_POSITION, self.view_position_changed) |
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self.canvas = canvas |
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|
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self.init_dialogs() |
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|
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interactor.Subscribe(SELECTED_SHAPE, self.identify_view_on_demand) |
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|
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EVT_CLOSE(self, self.OnClose) |
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|
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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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self.events_bound = {} |
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|
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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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|
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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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|
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def bind_command_events(self, command, ID): |
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"""Bind the necessary events for the given command and ID""" |
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if not self.events_bound.has_key(ID): |
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# the events haven't been bound yet |
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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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|
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def build_menu_bar(self, menudesc): |
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"""Build and return the menu bar from the menu description""" |
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menu_bar = wxMenuBar() |
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|
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for item in menudesc.items: |
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# here the items must all be Menu instances themselves |
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menu_bar.Append(self.build_menu(item), item.title) |
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|
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return menu_bar |
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|
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def build_menu(self, menudesc): |
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"""Build and return a wxMenu from a menudescription""" |
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wxmenu = wxMenu() |
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last = None |
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for item in menudesc.items: |
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# here the items must all be Menu instances themselves |
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if item is None: |
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# a separator. Only add one if the last item was not a |
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# separator |
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if last is not None: |
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wxmenu.AppendSeparator() |
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elif isinstance(item, Menu): |
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# a submenu |
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wxmenu.AppendMenu(wxNewId(), item.title, self.build_menu(item)) |
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else: |
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# must the name the name of a command |
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self.add_menu_command(wxmenu, item) |
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last = item |
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return wxmenu |
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|
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def build_toolbar(self, toolbardesc): |
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"""Build and return the main toolbar window from a toolbar description |
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|
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The parameter should be an instance of the Menu class but it |
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should not contain submenus. |
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""" |
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toolbar = self.CreateToolBar(wxTB_3DBUTTONS) |
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|
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# set the size of the tools' bitmaps. Not needed on wxGTK, but |
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# on Windows, although it doesn't work very well there. It seems |
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# that only 16x16 icons are really supported on windows. |
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# We probably shouldn't hardwire the bitmap size here. |
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toolbar.SetToolBitmapSize(wxSize(24, 24)) |
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|
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for item in toolbardesc.items: |
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if item is None: |
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toolbar.AddSeparator() |
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else: |
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# assume it's a string. |
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self.add_toolbar_command(toolbar, item) |
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|
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return toolbar |
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|
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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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|
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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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self.bind_command_events(command, ID) |
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else: |
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print "Unknown command %s" % name |
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|
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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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|
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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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self.bind_command_events(command, ID) |
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else: |
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print "Unknown command %s" % name |
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|
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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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|
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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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|
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def RunMessageBox(self, title, text, flags = wxOK | wxICON_INFORMATION): |
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"""Run a modal 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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|
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def init_dialogs(self): |
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"""Initialize the dialog handling""" |
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# The mainwindow maintains a dict mapping names to open |
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# non-modal dialogs. The dialogs are put into this dict when |
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# they're created and removed when they're closed |
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self.dialogs = {} |
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|
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def add_dialog(self, name, dialog): |
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if self.dialogs.has_key(name): |
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raise RuntimeError("The Dialog named %s is already open" % name) |
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self.dialogs[name] = dialog |
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|
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def dialog_open(self, name): |
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return self.dialogs.has_key(name) |
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|
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def remove_dialog(self, name): |
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del self.dialogs[name] |
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|
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def get_open_dialog(self, name): |
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return self.dialogs.get(name) |
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|
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def view_position_changed(self): |
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pos = self.canvas.CurrentPosition() |
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if pos is not None: |
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text = "(%10.10g, %10.10g)" % pos |
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else: |
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text = "" |
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self.SetStatusText(text) |
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|
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def save_modified_session(self, can_veto = 1): |
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"""If the current session has been modified, ask the user |
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whether to save it and do so if requested. Return the outcome of |
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the dialog (either wxID_OK, wxID_CANCEL or wxID_NO). If the |
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dialog wasn't run return wxID_NO. |
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|
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If the can_veto parameter is true (default) the dialog includes |
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a cancel button, otherwise not. |
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""" |
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if main.app.session.WasModified(): |
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flags = wxYES_NO | wxICON_QUESTION |
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if can_veto: |
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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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else: |
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result = wxID_NO |
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return result |
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|
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def NewSession(self): |
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self.save_modified_session() |
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main.app.SetSession(create_empty_session()) |
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|
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def OpenSession(self): |
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self.save_modified_session() |
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dlg = wxFileDialog(self, "Select a session file", ".", "", |
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"*.thuban", 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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|
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def SaveSession(self): |
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if main.app.session.filename == None: |
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self.SaveSessionAs() |
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main.app.SaveSession() |
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|
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def SaveSessionAs(self): |
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dlg = wxFileDialog(self, "Enter a filename for session", ".", "", |
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"*.thuban", 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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|
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def Exit(self): |
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self.Close(false) |
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|
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def OnClose(self, event): |
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result = self.save_modified_session(can_veto = event.CanVeto()) |
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if result == wxID_CANCEL: |
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event.Veto() |
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else: |
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self.Destroy() |
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|
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def SetMap(self, map): |
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self.canvas.SetMap(map) |
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|
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def ShowSessionTree(self): |
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name = "session_tree" |
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dialog = self.get_open_dialog(name) |
| 313 |
if dialog is None: |
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dialog = tree.SessionTreeView(self, main.app, name) |
| 315 |
self.add_dialog(name, dialog) |
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dialog.Show(true) |
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else: |
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# FIXME: bring dialog to front here |
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pass |
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|
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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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|
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def AddLayer(self): |
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dlg = wxFileDialog(self, "Select a data file", ".", "", "*.*", |
| 331 |
wxOPEN) |
| 332 |
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) |
| 340 |
except IOError: |
| 341 |
# the layer couldn't be opened |
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self.RunMessageBox("Add Layer", |
| 343 |
"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 |
| 347 |
# new map to the window |
| 348 |
self.canvas.FitMapToWindow() |
| 349 |
dlg.Destroy() |
| 350 |
|
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def RemoveLayer(self): |
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layer = self.current_layer() |
| 353 |
if layer is not None: |
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self.canvas.Map().RemoveLayer(layer) |
| 355 |
|
| 356 |
def RaiseLayer(self): |
| 357 |
layer = self.current_layer() |
| 358 |
if layer is not None: |
| 359 |
self.canvas.Map().RaiseLayer(layer) |
| 360 |
|
| 361 |
def LowerLayer(self): |
| 362 |
layer = self.current_layer() |
| 363 |
if layer is not None: |
| 364 |
self.canvas.Map().LowerLayer(layer) |
| 365 |
|
| 366 |
def current_layer(self): |
| 367 |
"""Return the currently selected layer. |
| 368 |
|
| 369 |
If no layer is selected, return None |
| 370 |
""" |
| 371 |
return self.interactor.SelectedLayer() |
| 372 |
|
| 373 |
def has_selected_layer(self): |
| 374 |
"""Return true if a layer is currently selected""" |
| 375 |
return self.interactor.HasSelectedLayer() |
| 376 |
|
| 377 |
def choose_color(self): |
| 378 |
"""Run the color selection dialog and return the selected color. |
| 379 |
|
| 380 |
If the user cancels, return None. |
| 381 |
""" |
| 382 |
dlg = wxColourDialog(self) |
| 383 |
color = None |
| 384 |
if dlg.ShowModal() == wxID_OK: |
| 385 |
data = dlg.GetColourData() |
| 386 |
wxc = data.GetColour() |
| 387 |
color = Color(wxc.Red() / 255.0, |
| 388 |
wxc.Green() / 255.0, |
| 389 |
wxc.Blue() / 255.0) |
| 390 |
dlg.Destroy() |
| 391 |
return color |
| 392 |
|
| 393 |
def LayerFillColor(self): |
| 394 |
layer = self.current_layer() |
| 395 |
if layer is not None: |
| 396 |
color = self.choose_color() |
| 397 |
if color is not None: |
| 398 |
layer.SetFill(color) |
| 399 |
|
| 400 |
def LayerTransparentFill(self): |
| 401 |
layer = self.current_layer() |
| 402 |
if layer is not None: |
| 403 |
layer.SetFill(None) |
| 404 |
|
| 405 |
def LayerOutlineColor(self): |
| 406 |
layer = self.current_layer() |
| 407 |
if layer is not None: |
| 408 |
color = self.choose_color() |
| 409 |
if color is not None: |
| 410 |
layer.SetStroke(color) |
| 411 |
|
| 412 |
def LayerNoOutline(self): |
| 413 |
layer = self.current_layer() |
| 414 |
if layer is not None: |
| 415 |
layer.SetStroke(None) |
| 416 |
|
| 417 |
def HideLayer(self): |
| 418 |
layer = self.current_layer() |
| 419 |
if layer is not None: |
| 420 |
layer.SetVisible(0) |
| 421 |
|
| 422 |
def ShowLayer(self): |
| 423 |
layer = self.current_layer() |
| 424 |
if layer is not None: |
| 425 |
layer.SetVisible(1) |
| 426 |
|
| 427 |
def LayerShowTable(self): |
| 428 |
layer = self.current_layer() |
| 429 |
if layer is not None: |
| 430 |
table = layer.table |
| 431 |
name = "table_view" + str(id(table)) |
| 432 |
dialog = self.get_open_dialog(name) |
| 433 |
if dialog is None: |
| 434 |
dialog = tableview.TableFrame(self, self.interactor, name, |
| 435 |
"Table: %s" % layer.Title(), |
| 436 |
layer, table) |
| 437 |
self.add_dialog(name, dialog) |
| 438 |
dialog.Show(true) |
| 439 |
else: |
| 440 |
# FIXME: bring dialog to front here |
| 441 |
pass |
| 442 |
|
| 443 |
def Projection(self): |
| 444 |
map = self.canvas.Map() |
| 445 |
proj = map.projection |
| 446 |
if proj is None: |
| 447 |
proj4Dlg = proj4dialog.Proj4Dialog(NULL, None, map.BoundingBox()) |
| 448 |
else: |
| 449 |
proj4Dlg = proj4dialog.Proj4Dialog(NULL, map.projection.params, |
| 450 |
map.BoundingBox()) |
| 451 |
if proj4Dlg.ShowModal() == wxID_OK: |
| 452 |
params = proj4Dlg.GetParams() |
| 453 |
if params is not None: |
| 454 |
proj = Projection(params) |
| 455 |
else: |
| 456 |
proj = None |
| 457 |
map.SetProjection(proj) |
| 458 |
proj4Dlg.Destroy() |
| 459 |
|
| 460 |
def ZoomInTool(self): |
| 461 |
self.canvas.ZoomInTool() |
| 462 |
|
| 463 |
def ZoomOutTool(self): |
| 464 |
self.canvas.ZoomOutTool() |
| 465 |
|
| 466 |
def PanTool(self): |
| 467 |
self.canvas.PanTool() |
| 468 |
|
| 469 |
def IdentifyTool(self): |
| 470 |
self.canvas.IdentifyTool() |
| 471 |
self.identify_view_on_demand(None, None) |
| 472 |
|
| 473 |
def LabelTool(self): |
| 474 |
self.canvas.LabelTool() |
| 475 |
|
| 476 |
def FullExtent(self): |
| 477 |
self.canvas.FitMapToWindow() |
| 478 |
|
| 479 |
def PrintMap(self): |
| 480 |
self.canvas.Print() |
| 481 |
|
| 482 |
def identify_view_on_demand(self, layer, shape): |
| 483 |
name = "identify_view" |
| 484 |
if self.canvas.CurrentTool() == "IdentifyTool": |
| 485 |
if not self.dialog_open(name): |
| 486 |
dialog = identifyview.IdentifyView(self, self.interactor, name) |
| 487 |
self.add_dialog(name, dialog) |
| 488 |
dialog.Show(true) |
| 489 |
else: |
| 490 |
# FIXME: bring dialog to front? |
| 491 |
pass |
| 492 |
|
| 493 |
# |
| 494 |
# Define all the commands available in the main window |
| 495 |
# |
| 496 |
|
| 497 |
|
| 498 |
# Helper functions to define common command implementations |
| 499 |
def call_method(context, methodname, *args): |
| 500 |
"""Call the context's method methodname with args *args""" |
| 501 |
apply(getattr(context, methodname), args) |
| 502 |
|
| 503 |
def _method_command(name, title, method, helptext = "", |
| 504 |
icon = "", sensitive = None): |
| 505 |
"""Add a command implemented by a method of the context object""" |
| 506 |
registry.Add(Command(name, title, call_method, args=(method,), |
| 507 |
helptext = helptext, icon = icon, |
| 508 |
sensitive = sensitive)) |
| 509 |
|
| 510 |
def _tool_command(name, title, method, toolname, helptext = "", |
| 511 |
icon = ""): |
| 512 |
"""Add a tool command""" |
| 513 |
def check_current_tool(context, name=toolname): |
| 514 |
return context.canvas.CurrentTool() == name |
| 515 |
registry.Add(Command(name, title, call_method, args=(method,), |
| 516 |
helptext = helptext, icon = icon, |
| 517 |
checked = check_current_tool)) |
| 518 |
|
| 519 |
def _has_selected_layer(context): |
| 520 |
"""Return true if a layer is selected in the context""" |
| 521 |
return context.has_selected_layer() |
| 522 |
|
| 523 |
# File menu |
| 524 |
_method_command("new_session", "&New Session", "NewSession") |
| 525 |
_method_command("open_session", "&Open Session", "OpenSession") |
| 526 |
_method_command("save_session", "&Save Session", "SaveSession") |
| 527 |
_method_command("save_session_as", "Save Session &As", "SaveSessionAs") |
| 528 |
_method_command("show_session_tree", "Show Session &Tree", "ShowSessionTree") |
| 529 |
_method_command("exit", "&Exit", "Exit") |
| 530 |
|
| 531 |
# Help menu |
| 532 |
_method_command("help_about", "&About", "About") |
| 533 |
|
| 534 |
|
| 535 |
# Map menu |
| 536 |
_method_command("map_projection", "Pro&jection", "Projection") |
| 537 |
|
| 538 |
_tool_command("map_zoom_in_tool", "&Zoom in", "ZoomInTool", "ZoomInTool", |
| 539 |
helptext = "Switch to map-mode 'zoom-in'", icon = "zoom_in") |
| 540 |
_tool_command("map_zoom_out_tool", "Zoom &out", "ZoomOutTool", "ZoomOutTool", |
| 541 |
helptext = "Switch to map-mode 'zoom-out'", icon = "zoom_out") |
| 542 |
_tool_command("map_pan_tool", "&Pan", "PanTool", "PanTool", |
| 543 |
helptext = "Switch to map-mode 'pan'", icon = "pan") |
| 544 |
_tool_command("map_identify_tool", "&Identify", "IdentifyTool", "IdentifyTool", |
| 545 |
helptext = "Switch to map-mode 'identify'", icon = "identify") |
| 546 |
_tool_command("map_label_tool", "&Label", "LabelTool", "LabelTool", |
| 547 |
helptext = "Add/Remove labels", icon = "label") |
| 548 |
_method_command("map_full_extent", "&Full extent", "FullExtent", |
| 549 |
helptext = "Full Extent", icon = "fullextent") |
| 550 |
_method_command("map_print", "Prin&t", "PrintMap", helptext = "Print the map") |
| 551 |
|
| 552 |
# Layer menu |
| 553 |
_method_command("layer_add", "&Add Layer", "AddLayer", |
| 554 |
helptext = "Add a new layer to active map") |
| 555 |
_method_command("layer_remove", "&Remove Layer", "RemoveLayer", |
| 556 |
helptext = "Remove selected layer(s)", |
| 557 |
sensitive = _has_selected_layer) |
| 558 |
_method_command("layer_fill_color", "&Fill Color", "LayerFillColor", |
| 559 |
helptext = "Set the fill color of selected layer(s)", |
| 560 |
sensitive = _has_selected_layer) |
| 561 |
_method_command("layer_transparent_fill", "&Transparent Fill", |
| 562 |
"LayerTransparentFill", |
| 563 |
helptext = "Do not fill the selected layer(s)", |
| 564 |
sensitive = _has_selected_layer) |
| 565 |
_method_command("layer_outline_color", "&Outline Color", "LayerOutlineColor", |
| 566 |
helptext = "Set the outline color of selected layer(s)", |
| 567 |
sensitive = _has_selected_layer) |
| 568 |
_method_command("layer_no_outline", "&No Outline", "LayerNoOutline", |
| 569 |
helptext = "Do not draw the outline of the selected layer(s)", |
| 570 |
sensitive = _has_selected_layer) |
| 571 |
_method_command("layer_raise", "&Raise", "RaiseLayer", |
| 572 |
helptext = "Raise selected layer(s)", |
| 573 |
sensitive = _has_selected_layer) |
| 574 |
_method_command("layer_lower", "&Lower", "LowerLayer", |
| 575 |
helptext = "Lower selected layer(s)", |
| 576 |
sensitive = _has_selected_layer) |
| 577 |
_method_command("layer_show", "&Show", "ShowLayer", |
| 578 |
helptext = "Make selected layer(s) visible", |
| 579 |
sensitive = _has_selected_layer) |
| 580 |
_method_command("layer_hide", "&Hide", "HideLayer", |
| 581 |
helptext = "Make selected layer(s) unvisible", |
| 582 |
sensitive = _has_selected_layer) |
| 583 |
_method_command("layer_show_table", "Show Ta&ble", "LayerShowTable", |
| 584 |
helptext = "Show the selected layer's table", |
| 585 |
sensitive = _has_selected_layer) |
| 586 |
|
| 587 |
|
| 588 |
# the menu structure |
| 589 |
main_menu = Menu("<main>", "<main>", |
| 590 |
[Menu("file", "&File", |
| 591 |
["new_session", "open_session", None, |
| 592 |
"save_session", "save_session_as", None, |
| 593 |
"show_session_tree", None, |
| 594 |
"exit"]), |
| 595 |
Menu("map", "&Map", |
| 596 |
["layer_add", "layer_remove", |
| 597 |
None, |
| 598 |
"map_projection", |
| 599 |
None, |
| 600 |
"map_zoom_in_tool", "map_zoom_out_tool", |
| 601 |
"map_pan_tool", "map_identify_tool", "map_label_tool", |
| 602 |
None, |
| 603 |
"map_full_extent", |
| 604 |
None, |
| 605 |
"map_print"]), |
| 606 |
Menu("layer", "&Layer", |
| 607 |
["layer_fill_color", "layer_transparent_fill", |
| 608 |
"layer_outline_color", "layer_no_outline", |
| 609 |
None, |
| 610 |
"layer_raise", "layer_lower", |
| 611 |
None, |
| 612 |
"layer_show", "layer_hide", |
| 613 |
None, |
| 614 |
"layer_show_table"]), |
| 615 |
Menu("help", "&Help", |
| 616 |
["help_about"])]) |
| 617 |
|
| 618 |
# the main toolbar |
| 619 |
|
| 620 |
main_toolbar = Menu("<toolbar>", "<toolbar>", |
| 621 |
["map_zoom_in_tool", "map_zoom_out_tool", "map_pan_tool", |
| 622 |
"map_identify_tool", "map_label_tool", "map_full_extent"]) |
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