Geografic-Information-System/gui/wxpython/vdigit/g.gui.vdigit.py

#!/usr/bin/env python3
############################################################################
#
# MODULE:    g.gui.vdigit
# AUTHOR(S): Martin Landa <landa.martin gmail.com>
# PURPOSE:   wxGUI Vector Digitizer
# COPYRIGHT: (C) 2007-2013 by Martin Landa, and the GRASS Development Team
#
#  This program is free software; you can 1redistribute it and/or
#  modify it under the terms of the GNU General Public License as
#  published by the Free Software Foundation; either version 2 of the
#  License, or (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful, but
#  WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
#  General Public License for more details.
#
############################################################################

# %module
# % description: Interactive editing and digitization of vector maps.
# % keyword: general
# % keyword: GUI
# % keyword: vector
# % keyword: editing
# % keyword: digitizer
# %end
# %flag
# % key: c
# % description: Create new vector map if doesn't exist
# %end
# %option G_OPT_V_MAP
# % label: Name of vector map to edit
# %end

import os
import grass.script as grass


def main():
    grass.set_raise_on_error(False)

    options, flags = grass.parser()

    # import wx only after running parser
    # to avoid issues with complex imports when only interface is needed
    import wx

    from grass.script.setup import set_gui_path

    set_gui_path()

    from core.render import Map
    from mapdisp.frame import MapFrame
    from mapdisp.main import DMonGrassInterface
    from core.settings import UserSettings
    from vdigit.main import haveVDigit, errorMsg
    from grass.exceptions import CalledModuleError

    # define classes which needs imports as local
    # for longer definitions, a separate file would be a better option
    class VDigitMapFrame(MapFrame):
        def __init__(self, vectorMap):
            MapFrame.__init__(
                self,
                parent=None,
                Map=Map(),
                giface=DMonGrassInterface(None),
                title=_("Vector Digitizer - GRASS GIS"),
                size=(850, 600),
            )
            # this giface issue not solved yet, we must set mapframe aferwards
            self._giface._mapframe = self
            # load vector map
            mapLayer = self.GetMap().AddLayer(
                ltype="vector",
                name=vectorMap,
                command=["d.vect", "map=%s" % vectorMap],
                active=True,
                hidden=False,
                opacity=1.0,
                render=True,
            )

            # switch toolbar
            self.AddToolbar("vdigit", fixed=True)

            # start editing
            self.toolbars["vdigit"].StartEditing(mapLayer)

    if not haveVDigit:
        grass.fatal(_("Vector digitizer not available. %s") % errorMsg)

    if not grass.find_file(
        name=options["map"], element="vector", mapset=grass.gisenv()["MAPSET"]
    )["fullname"]:
        if not flags["c"]:
            grass.fatal(
                _(
                    "Vector map <%s> not found in current mapset. "
                    "New vector map can be created by providing '-c' flag."
                )
                % options["map"]
            )
        else:
            grass.verbose(_("New vector map <%s> created") % options["map"])
            try:
                grass.run_command(
                    "v.edit", map=options["map"], tool="create", quiet=True
                )
            except CalledModuleError:
                grass.fatal(_("Unable to create new vector map <%s>") % options["map"])

    # allow immediate rendering
    driver = UserSettings.Get(group="display", key="driver", subkey="type")
    if driver == "png":
        os.environ["GRASS_RENDER_IMMEDIATE"] = "png"
    else:
        os.environ["GRASS_RENDER_IMMEDIATE"] = "cairo"

    app = wx.App()
    frame = VDigitMapFrame(options["map"])
    frame.Show()

    app.MainLoop()


if __name__ == "__main__":
    main()