"""
@package gcp.manager

@brief Georectification module for GRASS GIS. Includes ground control
point management and interactive point and click GCP creation

Classes:
 - manager::GCPWizard
 - manager::LocationPage
 - manager::GroupPage
 - manager::DispMapPage
 - manager::GCPPanel
 - manager::GCPDisplay
 - manager::GCPList
 - manager::VectGroup
 - manager::EditGCP
 - manager::GrSettingsDialog

(C) 2006-2017 by the GRASS Development Team

This program is free software under the GNU General Public License
(>=v2). Read the file COPYING that comes with GRASS for details.

@author Original author Michael Barton
@author Original version improved by Martin Landa <landa.martin gmail.com>
@author Rewritten by Markus Metz redesign georectfier -> GCP Manage
@author Support for GraphicsSet added by Stepan Turek <stepan.turek seznam.cz> (2012)
@author port i.image.2target (v6) to version 7 in 2017 by Yann
"""

# TODO: i.ortho.transform has 6 appearances, check each of them and configure
# TODO: i.ortho.transform looks for REF_POINTS/CONTROL_POINTS and not POINTS
# TODO: CHECK CONTROL_POINTS format and create it for i.ortho.transform to use.

from __future__ import print_function

import os
import sys
import six
import shutil
from copy import copy

import wx
from wx.lib.mixins.listctrl import ColumnSorterMixin, ListCtrlAutoWidthMixin
import wx.lib.colourselect as csel

from core import globalvar

if globalvar.wxPythonPhoenix:
    from wx import adv as wiz
else:
    from wx import wizard as wiz

import grass.script as grass


from core import utils
from core.render import Map
from gui_core.gselect import Select, LocationSelect, MapsetSelect
from gui_core.dialogs import GroupDialog
from gui_core.mapdisp import FrameMixin
from core.gcmd import RunCommand, GMessage, GError, GWarning
from core.settings import UserSettings
from gcp.mapdisplay import MapPanel
from core.giface import Notification
from gui_core.wrap import (
    SpinCtrl,
    Button,
    StaticText,
    StaticBox,
    CheckListBox,
    TextCtrl,
    Menu,
    ListCtrl,
    BitmapFromImage,
    CheckListCtrlMixin,
)

from location_wizard.wizard import GridBagSizerTitledPage as TitledPage

#
# global variables
#
global src_map
global tgt_map
global maptype

src_map = ""
tgt_map = {"raster": "", "vector": ""}
maptype = "raster"


def getSmallUpArrowImage():
    stream = open(os.path.join(globalvar.IMGDIR, "small_up_arrow.png"), "rb")
    try:
        img = wx.Image(stream)
    finally:
        stream.close()
    return img


def getSmallDnArrowImage():
    stream = open(os.path.join(globalvar.IMGDIR, "small_down_arrow.png"), "rb")
    try:
        img = wx.Image(stream)
    finally:
        stream.close()
    stream.close()
    return img


class GCPWizard(object):
    """
    Start wizard here and finish wizard here
    """

    # def __init__(self, parent, giface, srcloc, srcmpt, srcgrp, srcras, tgtras, camera, order, extension):
    #    global maptype
    #    global src_map
    #    global tgt_map
    #    maptype = 'raster'
    #    rendertype = 'raster'
    #    self.parent = parent  # GMFrame
    #    self._giface = giface
    #    self.srcloc = srcloc
    #    self.srcmpt = srcmpt
    #    self.group = srcgrp
    #    self.src_map = srcras
    #    self.tgt_map = tgtras
    #    self.camera = camera
    #    self.order = int(order)
    #    self.extension = extension
    #    self.src_maps = self.src_map
    #    # location for xy map to georectify
    #    self.newlocation = self.srcloc
    #    # mapset for xy map to georectify
    #    self.newmapset = self.srcmpt
    def __init__(self, parent, giface):
        self.parent = parent  # GMFrame
        self._giface = giface

        #
        # get environmental variables
        #
        self.grassdatabase = grass.gisenv()["GISDBASE"]

        #
        # read original environment settings
        #
        self.target_gisrc = os.environ["GISRC"]
        self.gisrc_dict = {}
        try:
            f = open(self.target_gisrc, "r")
            for line in f.readlines():
                line = line.replace("\n", "").strip()
                if len(line) < 1:
                    continue
                key, value = line.split(":", 1)
                self.gisrc_dict[key.strip()] = value.strip()
        finally:
            f.close()

        self.currentlocation = self.gisrc_dict["LOCATION_NAME"]
        self.currentmapset = self.gisrc_dict["MAPSET"]
        # location for xy map to georectify
        self.newlocation = ""
        # mapset for xy map to georectify
        self.newmapset = ""

        global maptype
        global src_map
        global tgt_map

        # src_map = ''
        # tgt_map = ''
        maptype = "raster"

        # GISRC file for source location/mapset of map(s) to georectify
        self.source_gisrc = ""
        self.src_maps = []

        # Raster map with camera angle relative to ground surface (i.ortho.rectify)
        self.cam_angle = ""

        #
        # define wizard pages
        #
        self.wizard = wiz.Wizard(
            parent=parent, id=wx.ID_ANY, title=_("Setup for georectification")
        )
        self.startpage = LocationPage(self.wizard, self)
        self.grouppage = GroupPage(self.wizard, self)
        self.mappage = DispMapPage(self.wizard, self)

        #
        # set the initial order of the pages
        #
        self.startpage.SetNext(self.grouppage)
        self.grouppage.SetPrev(self.startpage)
        self.grouppage.SetNext(self.mappage)
        self.mappage.SetPrev(self.grouppage)

        #
        # do pages layout
        #
        self.startpage.DoLayout()
        self.grouppage.DoLayout()
        self.mappage.DoLayout()
        self.wizard.FitToPage(self.startpage)

        # self.Bind(wx.EVT_CLOSE,    self.Cleanup)
        # self.parent.Bind(wx.EVT_ACTIVATE, self.OnGLMFocus)

        success = False

        #
        # run wizard
        #
        if self.wizard.RunWizard(self.startpage):
            success = self.OnWizFinished()
            if not success:
                GMessage(parent=self.parent, message=_("Georectifying setup canceled."))
                self.Cleanup()
        else:
            GMessage(parent=self.parent, message=_("Georectifying setup canceled."))
            self.Cleanup()

        #
        # start GCP display
        #
        if success:
            # instance of render.Map to be associated with display
            self.SwitchEnv("source")
            self.SrcMap = Map(gisrc=self.source_gisrc)
            self.SwitchEnv("target")
            self.TgtMap = Map(gisrc=self.target_gisrc)
            self.Map = self.SrcMap

            #
            # add layer to source map
            #
            if maptype == "raster":
                rendertype = "raster"
                cmdlist = ["d.rast", "map=%s" % src_map]
            else:  # -> vector layer
                rendertype = "vector"
                cmdlist = ["d.vect", "map=%s" % src_map]

            self.SwitchEnv("source")
            name, found = utils.GetLayerNameFromCmd(cmdlist)
            self.SrcMap.AddLayer(
                ltype=rendertype,
                command=cmdlist,
                active=True,
                name=name,
                hidden=False,
                opacity=1.0,
                render=False,
            )

            self.SwitchEnv("target")
            if tgt_map["raster"]:
                #
                # add raster layer to target map
                #
                rendertype = "raster"
                cmdlist = ["d.rast", "map=%s" % tgt_map["raster"]]

                name, found = utils.GetLayerNameFromCmd(cmdlist)
                self.TgtMap.AddLayer(
                    ltype=rendertype,
                    command=cmdlist,
                    active=True,
                    name=name,
                    hidden=False,
                    opacity=1.0,
                    render=False,
                )

            if tgt_map["vector"]:
                #
                # add raster layer to target map
                #
                rendertype = "vector"
                cmdlist = ["d.vect", "map=%s" % tgt_map["vector"]]

                name, found = utils.GetLayerNameFromCmd(cmdlist)
                self.TgtMap.AddLayer(
                    ltype=rendertype,
                    command=cmdlist,
                    active=True,
                    name=name,
                    hidden=False,
                    opacity=1.0,
                    render=False,
                )

            #
            # start GCP Manager
            #
            # create superior Map Display frame
            mapframe = wx.Frame(
                parent=None,
                id=wx.ID_ANY,
                size=globalvar.MAP_WINDOW_SIZE,
                style=wx.DEFAULT_FRAME_STYLE,
                title=name,
            )
            gcpmgr = GCPDisplay(
                parent=mapframe,
                giface=self._giface,
                grwiz=self,
                id=wx.ID_ANY,
                Map=self.SrcMap,
                lmgr=self.parent,
                title=name,
            )

            # load GCPs
            gcpmgr.InitMapDisplay()
            gcpmgr.CenterOnScreen()
            gcpmgr.Show()
            # need to update AUI here for wingrass
            gcpmgr._mgr.Update()
        else:
            self.Cleanup()

    def SetSrcEnv(self, location, mapset):
        """Create environment to use for location and mapset
        that are the source of the file(s) to georectify

        :param location: source location
        :param mapset: source mapset

        :return: False on error
        :return: True on success
        """

        self.newlocation = location
        self.newmapset = mapset

        # check to see if we are georectifying map in current working
        # location/mapset
        if (
            self.newlocation == self.currentlocation
            and self.newmapset == self.currentmapset
        ):
            return False

        self.gisrc_dict["LOCATION_NAME"] = location
        self.gisrc_dict["MAPSET"] = mapset

        self.source_gisrc = utils.GetTempfile()

        try:
            f = open(self.source_gisrc, mode="w")
            for line in self.gisrc_dict.items():
                f.write(line[0] + ": " + line[1] + "\n")
        finally:
            f.close()

        return True

    def SwitchEnv(self, grc):
        """
        Switches between original working location/mapset and
        location/mapset that is source of file(s) to georectify
        """
        # check to see if we are georectifying map in current working
        # location/mapset
        if (
            self.newlocation == self.currentlocation
            and self.newmapset == self.currentmapset
        ):
            return False

        if grc == "target":
            os.environ["GISRC"] = str(self.target_gisrc)
        elif grc == "source":
            os.environ["GISRC"] = str(self.source_gisrc)

        return True

    def OnWizFinished(self):
        # self.Cleanup()

        return True

    def OnGLMFocus(self, event):
        """Layer Manager focus"""
        # self.SwitchEnv('target')

        event.Skip()

    def Cleanup(self):
        """Return to current location and mapset"""
        # here was also the cleaning of gcpmanagement from layer manager
        # which is no longer needed

        self.SwitchEnv("target")
        self.wizard.Destroy()


class LocationPage(TitledPage):
    """
    Set map type (raster or vector) to georectify and
    select location/mapset of map(s) to georectify.
    """

    def __init__(self, wizard, parent):
        TitledPage.__init__(self, wizard, _("Select map type and location/mapset"))

        self.parent = parent
        self.grassdatabase = self.parent.grassdatabase

        self.xylocation = ""
        self.xymapset = ""

        #
        # layout
        #
        # map type
        self.rb_maptype = wx.RadioBox(
            parent=self,
            id=wx.ID_ANY,
            label=" %s " % _("Map type to georectify"),
            choices=[_("raster"), _("vector")],
            majorDimension=wx.RA_SPECIFY_COLS,
        )
        self.sizer.Add(
            self.rb_maptype,
            flag=wx.ALIGN_CENTER | wx.ALL | wx.EXPAND,
            border=5,
            pos=(1, 1),
            span=(1, 2),
        )

        # location
        self.sizer.Add(
            StaticText(parent=self, id=wx.ID_ANY, label=_("Select source location:")),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(2, 1),
        )
        self.cb_location = LocationSelect(parent=self, gisdbase=self.grassdatabase)
        self.sizer.Add(
            self.cb_location,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(2, 2),
        )

        # mapset
        self.sizer.Add(
            StaticText(parent=self, id=wx.ID_ANY, label=_("Select source mapset:")),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(3, 1),
        )
        self.cb_mapset = MapsetSelect(
            parent=self, gisdbase=self.grassdatabase, setItems=False
        )
        self.sizer.Add(
            self.cb_mapset,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(3, 2),
        )
        self.sizer.AddGrowableCol(2)

        #
        # bindings
        #
        self.Bind(wx.EVT_RADIOBOX, self.OnMaptype, self.rb_maptype)
        self.Bind(wx.EVT_COMBOBOX, self.OnLocation, self.cb_location)
        self.cb_mapset.Bind(wx.EVT_TEXT, self.OnMapset)
        self.Bind(wiz.EVT_WIZARD_PAGE_CHANGING, self.OnPageChanging)
        self.Bind(wiz.EVT_WIZARD_PAGE_CHANGED, self.OnEnterPage)
        # self.Bind(wx.EVT_CLOSE, self.parent.Cleanup)

    def OnMaptype(self, event):
        """Change map type"""
        global maptype

        if event.GetInt() == 0:
            maptype = "raster"
        else:
            maptype = "vector"

    def OnLocation(self, event):
        """Sets source location for map(s) to georectify"""
        self.xylocation = event.GetString()

        # create a list of valid mapsets
        tmplist = os.listdir(os.path.join(self.grassdatabase, self.xylocation))
        self.mapsetList = []
        for item in tmplist:
            if os.path.isdir(
                os.path.join(self.grassdatabase, self.xylocation, item)
            ) and os.path.exists(
                os.path.join(self.grassdatabase, self.xylocation, item, "WIND")
            ):
                if item != "PERMANENT":
                    self.mapsetList.append(item)

        self.xymapset = "PERMANENT"
        utils.ListSortLower(self.mapsetList)
        self.mapsetList.insert(0, "PERMANENT")
        self.cb_mapset.SetItems(self.mapsetList)
        self.cb_mapset.SetStringSelection(self.xymapset)

        if not wx.FindWindowById(wx.ID_FORWARD).IsEnabled():
            wx.FindWindowById(wx.ID_FORWARD).Enable(True)

    def OnMapset(self, event):
        """Sets source mapset for map(s) to georectify"""
        if self.xylocation == "":
            GMessage(
                _("You must select a valid location " "before selecting a mapset"),
                parent=self,
            )
            return

        self.xymapset = event.GetString()

        if not wx.FindWindowById(wx.ID_FORWARD).IsEnabled():
            wx.FindWindowById(wx.ID_FORWARD).Enable(True)

    def OnPageChanging(self, event=None):
        if event.GetDirection() and (self.xylocation == "" or self.xymapset == ""):
            GMessage(
                _(
                    "You must select a valid location "
                    "and mapset in order to continue"
                ),
                parent=self,
            )
            event.Veto()
            return

        self.parent.SetSrcEnv(self.xylocation, self.xymapset)

    def OnEnterPage(self, event=None):
        if self.xylocation == "" or self.xymapset == "":
            wx.FindWindowById(wx.ID_FORWARD).Enable(False)
        else:
            wx.FindWindowById(wx.ID_FORWARD).Enable(True)


class GroupPage(TitledPage):
    """
    Set group to georectify. Create group if desired.
    """

    def __init__(self, wizard, parent):
        TitledPage.__init__(self, wizard, _("Select image/map group to georectify"))

        self.parent = parent

        self.grassdatabase = self.parent.grassdatabase
        self.groupList = []

        self.xylocation = ""
        self.xymapset = ""
        self.xygroup = ""

        # default extension
        self.extension = "_georect" + str(os.getpid())

        #
        # layout
        #
        # group
        self.sizer.Add(
            StaticText(parent=self, id=wx.ID_ANY, label=_("Select group:")),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(1, 1),
        )
        self.cb_group = wx.ComboBox(
            parent=self,
            id=wx.ID_ANY,
            choices=self.groupList,
            size=(350, -1),
            style=wx.CB_DROPDOWN | wx.CB_READONLY,
        )
        self.sizer.Add(
            self.cb_group,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(1, 2),
        )

        # create group
        self.sizer.Add(
            StaticText(
                parent=self, id=wx.ID_ANY, label=_("Create group if none exists")
            ),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(2, 1),
        )
        btnSizer = wx.BoxSizer(wx.HORIZONTAL)
        self.btn_mkgroup = Button(
            parent=self, id=wx.ID_ANY, label=_("Create/edit group...")
        )
        self.btn_vgroup = Button(
            parent=self, id=wx.ID_ANY, label=_("Add vector map to group...")
        )
        btnSizer.Add(self.btn_mkgroup, flag=wx.RIGHT, border=5)

        btnSizer.Add(self.btn_vgroup, flag=wx.LEFT, border=5)

        self.sizer.Add(
            btnSizer,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(2, 2),
        )

        # extension
        self.sizer.Add(
            StaticText(
                parent=self, id=wx.ID_ANY, label=_("Extension for output maps:")
            ),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(3, 1),
        )
        self.ext_txt = TextCtrl(parent=self, id=wx.ID_ANY, value="", size=(350, -1))
        self.ext_txt.SetValue(self.extension)
        self.sizer.Add(
            self.ext_txt,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(3, 2),
        )

        self.sizer.AddGrowableCol(2)
        #
        # bindings
        #
        self.Bind(wx.EVT_COMBOBOX, self.OnGroup, self.cb_group)
        self.Bind(wx.EVT_TEXT, self.OnExtension, self.ext_txt)
        self.Bind(wiz.EVT_WIZARD_PAGE_CHANGING, self.OnPageChanging)
        self.Bind(wiz.EVT_WIZARD_PAGE_CHANGED, self.OnEnterPage)
        self.Bind(wx.EVT_CLOSE, self.parent.Cleanup)

        # hide vector group button by default
        self.btn_vgroup.Hide()

    def OnGroup(self, event):
        self.xygroup = event.GetString()

    def OnMkGroup(self, event):
        """Create new group in source location/mapset"""
        dlg = GroupDialog(parent=self, defaultGroup=self.xygroup)
        dlg.DisableSubgroupEdit()
        dlg.ShowModal()
        gr, s = dlg.GetSelectedGroup()
        if gr in dlg.GetExistGroups():
            self.xygroup = gr
        else:
            gr = ""
        dlg.Destroy()

        self.OnEnterPage()
        self.Update()

    def OnVGroup(self, event):
        """Add vector maps to group"""
        dlg = VectGroup(
            parent=self,
            id=wx.ID_ANY,
            grassdb=self.grassdatabase,
            location=self.xylocation,
            mapset=self.xymapset,
            group=self.xygroup,
        )

        if dlg.ShowModal() != wx.ID_OK:
            return

        dlg.MakeVGroup()
        self.OnEnterPage()

    def OnExtension(self, event):
        self.extension = self.ext_txt.GetValue()

    def OnPageChanging(self, event=None):
        if event.GetDirection() and self.xygroup == "":
            GMessage(
                _("You must select a valid image/map " "group in order to continue"),
                parent=self,
            )
            event.Veto()
            return

        if event.GetDirection() and self.extension == "":
            GMessage(
                _("You must enter an map name " "extension in order to continue"),
                parent=self,
            )
            event.Veto()
            return

    def OnEnterPage(self, event=None):
        global maptype

        self.groupList = []

        self.xylocation = self.parent.gisrc_dict["LOCATION_NAME"]
        self.xymapset = self.parent.gisrc_dict["MAPSET"]

        # create a list of groups in selected mapset
        if os.path.isdir(
            os.path.join(self.grassdatabase, self.xylocation, self.xymapset, "group")
        ):
            tmplist = os.listdir(
                os.path.join(
                    self.grassdatabase, self.xylocation, self.xymapset, "group"
                )
            )
            for item in tmplist:
                if os.path.isdir(
                    os.path.join(
                        self.grassdatabase,
                        self.xylocation,
                        self.xymapset,
                        "group",
                        item,
                    )
                ):
                    self.groupList.append(item)

        if maptype == "raster":
            self.btn_vgroup.Hide()
            self.Bind(wx.EVT_BUTTON, self.OnMkGroup, self.btn_mkgroup)

        elif maptype == "vector":
            self.btn_vgroup.Show()
            self.Bind(wx.EVT_BUTTON, self.OnMkGroup, self.btn_mkgroup)
            self.Bind(wx.EVT_BUTTON, self.OnVGroup, self.btn_vgroup)

        utils.ListSortLower(self.groupList)
        self.cb_group.SetItems(self.groupList)

        if len(self.groupList) > 0:
            if self.xygroup and self.xygroup in self.groupList:
                self.cb_group.SetStringSelection(self.xygroup)
            else:
                self.cb_group.SetSelection(0)
                self.xygroup = self.groupList[0]

        if self.xygroup == "" or self.extension == "":
            wx.FindWindowById(wx.ID_FORWARD).Enable(False)
        else:
            wx.FindWindowById(wx.ID_FORWARD).Enable(True)

        # switch to source
        self.parent.SwitchEnv("source")


class DispMapPage(TitledPage):
    """
    Select ungeoreferenced map to display for interactively
    setting ground control points (GCPs).
    """

    def __init__(self, wizard, parent):
        TitledPage.__init__(
            self,
            wizard,
            _("Select maps to display for ground control point (GCP) creation"),
        )

        self.parent = parent
        global maptype

        #
        # layout
        #
        self.sizer.Add(
            StaticText(
                parent=self, id=wx.ID_ANY, label=_("Select source map to display:")
            ),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(1, 1),
        )

        self.srcselection = Select(
            self,
            id=wx.ID_ANY,
            size=globalvar.DIALOG_GSELECT_SIZE,
            type=maptype,
            updateOnPopup=False,
        )

        self.sizer.Add(
            self.srcselection,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(1, 2),
        )

        self.sizer.Add(
            StaticText(
                parent=self,
                id=wx.ID_ANY,
                label=_("Select target raster map to display:"),
            ),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(2, 1),
        )

        self.tgtrastselection = Select(
            self,
            id=wx.ID_ANY,
            size=globalvar.DIALOG_GSELECT_SIZE,
            type="raster",
            updateOnPopup=False,
        )

        self.sizer.Add(
            self.tgtrastselection,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(2, 2),
        )

        self.sizer.Add(
            StaticText(
                parent=self,
                id=wx.ID_ANY,
                label=_("Select target vector map to display:"),
            ),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(3, 1),
        )

        self.tgtvectselection = Select(
            self,
            id=wx.ID_ANY,
            size=globalvar.DIALOG_GSELECT_SIZE,
            type="vector",
            updateOnPopup=False,
        )

        self.sizer.Add(
            self.tgtvectselection,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
            pos=(3, 2),
        )

        #
        # bindings
        #
        self.srcselection.Bind(wx.EVT_TEXT, self.OnSrcSelection)
        self.tgtrastselection.Bind(wx.EVT_TEXT, self.OnTgtRastSelection)
        self.tgtvectselection.Bind(wx.EVT_TEXT, self.OnTgtVectSelection)
        self.Bind(wiz.EVT_WIZARD_PAGE_CHANGING, self.OnPageChanging)
        self.Bind(wiz.EVT_WIZARD_PAGE_CHANGED, self.OnEnterPage)
        self.Bind(wx.EVT_CLOSE, self.parent.Cleanup)

    def OnSrcSelection(self, event):
        """Source map to display selected"""
        global src_map
        global maptype

        src_map = self.srcselection.GetValue()

        if src_map == "":
            wx.FindWindowById(wx.ID_FORWARD).Enable(False)
        else:
            wx.FindWindowById(wx.ID_FORWARD).Enable(True)

        try:
            # set computational region to match selected map and zoom display
            # to region
            if maptype == "raster":
                p = RunCommand("g.region", "raster=src_map")
            elif maptype == "vector":
                p = RunCommand("g.region", "vector=src_map")

            if p.returncode == 0:
                print("returncode = ", str(p.returncode))
                self.parent.Map.region = self.parent.Map.GetRegion()
        except:
            pass

    def OnTgtRastSelection(self, event):
        """Source map to display selected"""
        global tgt_map

        tgt_map["raster"] = self.tgtrastselection.GetValue()

    def OnTgtVectSelection(self, event):
        """Source map to display selected"""
        global tgt_map

        tgt_map["vector"] = self.tgtvectselection.GetValue()

    def OnPageChanging(self, event=None):
        global src_map
        global tgt_map

        if event.GetDirection() and (src_map == ""):
            GMessage(
                _("You must select a source map " "in order to continue"), parent=self
            )
            event.Veto()
            return

        self.parent.SwitchEnv("target")

    def OnEnterPage(self, event=None):
        global maptype
        global src_map
        global tgt_map

        self.srcselection.SetElementList(maptype)

        if maptype == "raster":
            ret = RunCommand(
                "i.group",
                parent=self,
                read=True,
                group=self.parent.grouppage.xygroup,
                flags="g",
            )

            if ret:
                self.parent.src_maps = ret.splitlines()
            else:
                GError(
                    parent=self,
                    message=_(
                        "No maps in selected group <%s>.\n"
                        "Please edit group or select another group."
                    )
                    % self.parent.grouppage.xygroup,
                )
                return

        elif maptype == "vector":
            grassdatabase = self.parent.grassdatabase
            xylocation = self.parent.gisrc_dict["LOCATION_NAME"]
            xymapset = self.parent.gisrc_dict["MAPSET"]
            # make list of vectors to georectify from VREF

            vgrpfile = os.path.join(
                grassdatabase,
                xylocation,
                xymapset,
                "group",
                self.parent.grouppage.xygroup,
                "VREF",
            )

            f = open(vgrpfile)
            try:
                for vect in f.readlines():
                    vect = vect.strip("\n")
                    if len(vect) < 1:
                        continue
                    self.parent.src_maps.append(vect)
            finally:
                f.close()

            if len(self.parent.src_maps) < 1:
                GError(
                    parent=self,
                    message=_(
                        "No maps in selected group <%s>.\n"
                        "Please edit group or select another group."
                    )
                    % self.parent.grouppage.xygroup,
                )
                return

        # filter out all maps not in group
        self.srcselection.tcp.GetElementList(elements=self.parent.src_maps)
        src_map = self.parent.src_maps[0]
        self.srcselection.SetValue(src_map)

        self.parent.SwitchEnv("target")
        self.tgtrastselection.SetElementList("raster")
        self.tgtrastselection.GetElementList()
        self.tgtvectselection.SetElementList("vector")
        self.tgtvectselection.GetElementList()
        self.parent.SwitchEnv("source")

        if src_map == "":
            wx.FindWindowById(wx.ID_FORWARD).Enable(False)
        else:
            wx.FindWindowById(wx.ID_FORWARD).Enable(True)


class GCPPanel(MapPanel, ColumnSorterMixin):
    """
    Manages ground control points for georectifying. Calculates RMS statistics.
    Calls i.ortho.rectify or v.rectify to georectify map.
    """

    def __init__(
        self,
        parent,
        giface,
        grwiz=None,
        id=wx.ID_ANY,
        title=_("Manage Ground Control Points"),
        size=(700, 300),
        toolbars=["gcpdisp"],
        Map=None,
        lmgr=None,
    ):

        self.grwiz = grwiz  # GR Wizard
        self._giface = giface

        if tgt_map["raster"] == "" and tgt_map["vector"] == "":
            self.show_target = False
        else:
            self.show_target = True

        # wx.Frame.__init__(self, parent, id, title, size = size, name = "GCPFrame")
        MapPanel.__init__(
            self,
            parent=parent,
            giface=self._giface,
            title=title,
            size=size,
            Map=Map,
            toolbars=toolbars,
            name="GCPMapWindow",
        )

        # init variables
        self.parent = parent

        #
        # register data structures for drawing GCP's
        #
        self.pointsToDrawTgt = self.TgtMapWindow.RegisterGraphicsToDraw(
            graphicsType="point", setStatusFunc=self.SetGCPSatus
        )
        self.pointsToDrawSrc = self.SrcMapWindow.RegisterGraphicsToDraw(
            graphicsType="point", setStatusFunc=self.SetGCPSatus
        )

        # connect to the map windows signals
        # used to add or edit GCP
        self.SrcMapWindow.mouseLeftUpPointer.connect(
            lambda x, y: self._onMouseLeftUpPointer(self.SrcMapWindow, x, y)
        )
        self.TgtMapWindow.mouseLeftUpPointer.connect(
            lambda x, y: self._onMouseLeftUpPointer(self.TgtMapWindow, x, y)
        )

        # window resized
        self.resize = False

        self.grassdatabase = self.grwiz.grassdatabase

        self.currentlocation = self.grwiz.currentlocation
        self.currentmapset = self.grwiz.currentmapset

        self.newlocation = self.grwiz.newlocation
        self.newmapset = self.grwiz.newmapset

        self.xylocation = self.grwiz.gisrc_dict["LOCATION_NAME"]
        self.xymapset = self.grwiz.gisrc_dict["MAPSET"]
        self.xygroup = self.grwiz.grouppage.xygroup
        self.src_maps = self.grwiz.src_maps
        self.extension = self.grwiz.grouppage.extension
        self.outname = ""
        self.VectGRList = []

        self.file = {
            "control_points": os.path.join(
                self.grassdatabase,
                self.xylocation,
                self.xymapset,
                "group",
                self.xygroup,
                "CONTROL_POINTS",
            ),
            "control_points_bak": os.path.join(
                self.grassdatabase,
                self.xylocation,
                self.xymapset,
                "group",
                self.xygroup,
                "CONTROL_POINTS_BAK",
            ),
            "rgrp": os.path.join(
                self.grassdatabase,
                self.xylocation,
                self.xymapset,
                "group",
                self.xygroup,
                "REF",
            ),
            "vgrp": os.path.join(
                self.grassdatabase,
                self.xylocation,
                self.xymapset,
                "group",
                self.xygroup,
                "VREF",
            ),
            "target": os.path.join(
                self.grassdatabase,
                self.xylocation,
                self.xymapset,
                "group",
                self.xygroup,
                "TARGET",
            ),
            "elevation": os.path.join(
                self.grassdatabase,
                self.xylocation,
                self.xymapset,
                "group",
                self.xygroup,
                "ELEVATION",
            ),
        }

        # make a backup of the current points file
        if os.path.exists(self.file["control_points"]):
            shutil.copy(self.file["control_points"], self.file["control_points_bak"])

        # polynomial order transformation for georectification
        self.gr_order = 1
        # interpolation method for georectification
        self.gr_method = "nearest"
        # region clipping for georectified map
        self.clip_to_region = False
        # number of GCPs selected to be used for georectification (checked)
        self.GCPcount = 0
        # forward RMS error
        self.fwd_rmserror = 0.0
        # backward RMS error
        self.bkw_rmserror = 0.0
        # list map coords and ID of map display they came from
        self.mapcoordlist = []
        self.mapcoordlist.append(
            [
                0,  # GCP number
                0.0,  # source east
                0.0,  # source north
                0.0,  # source height
                0.0,  # target east
                0.0,  # target north
                0.0,  # target height
                0.0,  # forward error
                0.0,
            ]
        )  # backward error

        # init vars to highlight high RMS errors
        self.highest_only = True
        self.show_unused = True
        self.highest_key = -1
        self.rmsthresh = 0
        self.rmsmean = 0
        self.rmssd = 0

        self.SetTarget(self.xygroup, self.currentlocation, self.currentmapset)

        self.itemDataMap = None

        # images for column sorting
        # CheckListCtrlMixin must set an ImageList first
        self.il = self.list.GetImageList(wx.IMAGE_LIST_SMALL)

        SmallUpArrow = BitmapFromImage(getSmallUpArrowImage())
        SmallDnArrow = BitmapFromImage(getSmallDnArrowImage())
        self.sm_dn = self.il.Add(SmallDnArrow)
        self.sm_up = self.il.Add(SmallUpArrow)

        # set mouse characteristics
        self.mapwin = self.SrcMapWindow
        self.mapwin.mouse["box"] = "point"
        self.mapwin.mouse["use"] == "pointer"
        self.mapwin.zoomtype = 0
        self.mapwin.pen = wx.Pen(colour="black", width=2, style=wx.SOLID)
        self.mapwin.SetNamedCursor("cross")

        self.mapwin = self.TgtMapWindow

        # set mouse characteristics
        self.mapwin.mouse["box"] = "point"
        self.mapwin.mouse["use"] == "pointer"
        self.mapwin.zoomtype = 0
        self.mapwin.pen = wx.Pen(colour="black", width=2, style=wx.SOLID)
        self.mapwin.SetNamedCursor("cross")

        #
        # show new display & draw map
        #
        if self.show_target:
            self.MapWindow = self.TgtMapWindow
            self.Map = self.TgtMap
            self.OnZoomToMap(None)

        self.MapWindow = self.SrcMapWindow
        self.Map = self.SrcMap
        self.OnZoomToMap(None)

        #
        # bindings
        #
        self.Bind(wx.EVT_ACTIVATE, self.OnFocus)
        self.Bind(wx.EVT_SIZE, self.OnSize)
        self.Bind(wx.EVT_IDLE, self.OnIdle)

        self.SetSettings()

    def __del__(self):
        """Disable GCP manager mode"""
        # leaving the method here but was used only to delete gcpmanagement
        # from layer manager which is now not needed
        pass

    def CreateGCPList(self):
        """Create GCP List Control"""

        return GCPList(parent=self, gcp=self)

    # Used by the ColumnSorterMixin, see wx/lib/mixins/listctrl.py
    def GetListCtrl(self):
        return self.list

    def GetMapCoordList(self):
        return self.mapcoordlist

    # Used by the ColumnSorterMixin, see wx/lib/mixins/listctrl.py
    def GetSortImages(self):
        return (self.sm_dn, self.sm_up)

    def GetFwdError(self):
        return self.fwd_rmserror

    def GetBkwError(self):
        return self.bkw_rmserror

    def InitMapDisplay(self):
        self.list.LoadData()

        # initialize column sorter
        self.itemDataMap = self.mapcoordlist
        ncols = self.list.GetColumnCount()
        ColumnSorterMixin.__init__(self, ncols)
        # init to ascending sort on first click
        self._colSortFlag = [1] * ncols

    def SetTarget(self, tgroup, tlocation, tmapset):
        """
        Sets rectification target to current location and mapset
        """
        # check to see if we are georectifying map in current working
        # location/mapset
        if (
            self.newlocation == self.currentlocation
            and self.newmapset == self.currentmapset
        ):
            RunCommand("i.target", parent=self, flags="c", group=tgroup)
        else:
            self.grwiz.SwitchEnv("source")
            RunCommand(
                "i.target",
                parent=self,
                group=tgroup,
                location=tlocation,
                mapset=tmapset,
            )
            self.grwiz.SwitchEnv("target")

    def AddGCP(self, event):
        """
        Appends an item to GCP list
        """
        keyval = self.list.AddGCPItem() + 1
        # source east, source north, target east, target north, forward error,
        # backward error
        self.mapcoordlist.append(
            [
                keyval,  # GCP number
                0.0,  # source east
                0.0,  # source north
                0.0,  # source height
                0.0,  # target east
                0.0,  # target north
                0.0,  # target height
                0.0,  # forward error
                0.0,
            ]
        )  # backward error

        if self.statusbarManager.GetMode() == 8:  # go to
            self.StatusbarUpdate()

    def DeleteGCP(self, event):
        """
        Deletes selected item in GCP list
        """
        minNumOfItems = self.OnGROrder(None)

        if self.list.GetItemCount() <= minNumOfItems:
            GMessage(
                parent=self,
                message=_("At least %d GCPs required. Operation canceled.")
                % minNumOfItems,
            )
            return

        key = self.list.DeleteGCPItem()
        del self.mapcoordlist[key]

        # update key and GCP number
        for newkey in range(key, len(self.mapcoordlist)):
            index = self.list.FindItem(-1, newkey + 1)
            self.mapcoordlist[newkey][0] = newkey
            self.list.SetItem(index, 0, str(newkey))
            self.list.SetItemData(index, newkey)

        # update selected
        if self.list.GetItemCount() > 0:
            if self.list.selected < self.list.GetItemCount():
                self.list.selectedkey = self.list.GetItemData(self.list.selected)
            else:
                self.list.selected = self.list.GetItemCount() - 1
                self.list.selectedkey = self.list.GetItemData(self.list.selected)

            self.list.SetItemState(
                self.list.selected, wx.LIST_STATE_SELECTED, wx.LIST_STATE_SELECTED
            )
        else:
            self.list.selected = wx.NOT_FOUND
            self.list.selectedkey = -1

        self.UpdateColours()

        if self.statusbarManager.GetMode() == 8:  # go to
            self.StatusbarUpdate()
            if self.list.selectedkey > 0:
                self.statusbarManager.SetProperty("gotoGCP", self.list.selectedkey)

    def ClearGCP(self, event):
        """
        Clears all values in selected item of GCP list and unchecks it
        """
        index = self.list.GetSelected()
        key = self.list.GetItemData(index)
        for i in range(1, 7):
            self.list.SetItem(index, i, "0.0")
        self.list.SetItem(index, 7, "")
        self.list.SetItem(index, 8, "")
        self.list.CheckItem(index, False)

        # GCP number, source E, source N, target E, target N, fwd error, bkwd
        # error
        self.mapcoordlist[key] = [key, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0]

    def SetSettings(self):
        """Sets settings for drawing of GCP's."""
        self.highest_only = UserSettings.Get(
            group="gcpman", key="rms", subkey="highestonly"
        )
        self.show_unused = UserSettings.Get(
            group="gcpman", key="symbol", subkey="unused"
        )

        colours = {
            "color": "default",
            "hcolor": "highest",
            "scolor": "selected",
            "ucolor": "unused",
        }
        wpx = UserSettings.Get(group="gcpman", key="symbol", subkey="width")

        for k, v in six.iteritems(colours):
            col = UserSettings.Get(group="gcpman", key="symbol", subkey=k)
            self.pointsToDrawSrc.GetPen(v).SetColour(
                wx.Colour(col[0], col[1], col[2], 255)
            )  # TODO GetPen neni to spatne?
            self.pointsToDrawTgt.GetPen(v).SetColour(
                wx.Colour(col[0], col[1], col[2], 255)
            )

            self.pointsToDrawSrc.GetPen(v).SetWidth(wpx)
            self.pointsToDrawTgt.GetPen(v).SetWidth(wpx)

        spx = UserSettings.Get(group="gcpman", key="symbol", subkey="size")
        self.pointsToDrawSrc.SetPropertyVal("size", int(spx))
        self.pointsToDrawTgt.SetPropertyVal("size", int(spx))

        font = self.GetFont()
        font.SetPointSize(int(spx) + 2)

        textProp = {}
        textProp["active"] = True
        textProp["font"] = font
        self.pointsToDrawSrc.SetPropertyVal("text", textProp)
        self.pointsToDrawTgt.SetPropertyVal("text", copy(textProp))

    def SetGCPSatus(self, item, itemIndex):
        """Before GCP is drawn, decides it's colour and whether it
        will be drawed.
        """
        key = self.list.GetItemData(itemIndex)
        # incremented because of itemDataMap (has one more item) - will be
        # changed
        itemIndex += 1

        if not self.list.IsItemChecked(key - 1):
            wxPen = "unused"
            if not self.show_unused:
                item.SetPropertyVal("hide", True)
            else:
                item.SetPropertyVal("hide", False)

        else:
            item.SetPropertyVal("hide", False)
            if self.highest_only:
                if itemIndex == self.highest_key:
                    wxPen = "highest"
                else:
                    wxPen = "default"
            else:
                if self.mapcoordlist[key][7] > self.rmsthresh:
                    wxPen = "highest"
                else:
                    wxPen = "default"

        if itemIndex == self.list.selectedkey:
            wxPen = "selected"

        item.SetPropertyVal("label", str(itemIndex))
        item.SetPropertyVal("penName", wxPen)

    def SetGCPData(self, coordtype, coord, mapdisp=None, confirm=False):
        """Inserts coordinates from file, mouse click on map, or
        after editing into selected item of GCP list and checks it for
        use.
        """
        index = self.list.GetSelected()
        if index == wx.NOT_FOUND:
            return

        coord0 = coord[0]
        coord1 = coord[1]

        key = self.list.GetItemData(index)
        if confirm:
            if self.MapWindow == self.SrcMapWindow:
                currloc = _("source")
            else:
                currloc = _("target")
            ret = wx.MessageBox(
                parent=self,
                caption=_("Set GCP coordinates"),
                message=_(
                    "Set %(coor)s coordinates for GCP No. %(key)s? \n\n"
                    "East: %(coor0)s \n"
                    "North: %(coor1)s"
                )
                % {
                    "coor": currloc,
                    "key": str(key),
                    "coor0": str(coord0),
                    "coor1": str(coord1),
                },
                style=wx.ICON_QUESTION | wx.YES_NO | wx.CENTRE,
            )

            # for wingrass
            if os.name == "nt":
                self.MapWindow.SetFocus()
            if ret == wx.NO:
                return

        if coordtype == "source":
            self.list.SetItem(index, 1, str(coord0))
            self.list.SetItem(index, 2, str(coord1))
            self.mapcoordlist[key][1] = coord[0]
            self.mapcoordlist[key][2] = coord[1]
            self.pointsToDrawSrc.GetItem(key - 1).SetCoords([coord0, coord1])

        elif coordtype == "target":
            self.list.SetItem(index, 4, str(coord0))
            self.list.SetItem(index, 5, str(coord1))
            self.mapcoordlist[key][4] = coord[0]
            self.mapcoordlist[key][5] = coord[1]
            # ADD ELEVATION FROM MAP AS HEIGHT PARAMETER
            if os.path.exists(self.file["elevation"]):
                # Parse the i.ortho.elev generated file
                # Get all lines from file
                lines = open(self.file["elevation"]).read().splitlines()
                # Remove empty spaces in lines
                lines = [x.replace(" ", "") for x in lines]
                # Extract map@mapset
                elevationmap = lines[0].split(":")[1] + "@" + lines[1].split(":")[1]
                # Make sure the region is set to the elevation map
                ret, msg = RunCommand(
                    "g.region",
                    parent=self,
                    getErrorMsg=True,
                    quiet=True,
                    raster=elevationmap,
                    flags=None,
                )
                # Get the elevation height from the map given by i.ortho.elev
                from subprocess import PIPE
                from grass.pygrass.modules import Module

                rwhat = Module(
                    "r.what",
                    map=elevationmap,
                    coordinates=[coord[0], coord[1]],
                    stdout_=PIPE,
                )
                self.mapcoordlist[key][6] = rwhat.outputs.stdout.split("|")[3].rstrip(
                    "\n"
                )
                self.list.SetItem(index, 6, str(self.mapcoordlist[key][6]))

            self.pointsToDrawTgt.GetItem(key - 1).SetCoords([coord0, coord1])

        self.list.SetItem(index, 7, "0")
        self.list.SetItem(index, 8, "0")
        self.mapcoordlist[key][7] = 0.0
        self.mapcoordlist[key][8] = 0.0

        # self.list.ResizeColumns()

    def SaveGCPs(self, event):
        """Make a CONTROL_POINTS file or save GCP coordinates to existing
        POINTS file
        """
        self.GCPcount = 0
        try:
            f = open(self.file["control_points"], mode="w")
            # use os.linesep or '\n' here ???
            f.write("# Ground Control Points File\n")
            f.write("# \n")
            f.write("# target location: " + self.currentlocation + "\n")
            f.write("# target mapset: " + self.currentmapset + "\n")
            f.write("#\tsource\t\t\ttarget\t\t\tstatus\n")
            f.write("#\teast\tnorth\theight\teast\tnorth\theight\t(1=ok, 0=ignore)\n")
            f.write(
                "#----------------------------     ---------------------------     ---------------\n"
            )

            for index in range(self.list.GetItemCount()):
                if self.list.IsItemChecked(index):
                    check = "1"
                    self.GCPcount += 1
                else:
                    check = "0"
                coord0 = self.list.GetItem(index, 1).GetText()
                coord1 = self.list.GetItem(index, 2).GetText()
                coord2 = self.list.GetItem(index, 3).GetText()
                coord3 = self.list.GetItem(index, 4).GetText()
                coord4 = self.list.GetItem(index, 5).GetText()
                coord5 = self.list.GetItem(index, 6).GetText()
                f.write(
                    coord0
                    + " "
                    + coord1
                    + "     "
                    + coord2
                    + " "
                    + coord3
                    + "     "
                    + coord4
                    + "     "
                    + coord5
                    + "     "
                    + check
                    + "\n"
                )

        except IOError as err:
            GError(
                parent=self,
                message="%s <%s>. %s%s"
                % (
                    _("Writing CONTROL_POINTS file failed"),
                    self.file["control_points"],
                    os.linesep,
                    err,
                ),
            )
            return

        f.close()

        # if event != None save also to backup file
        if event:
            shutil.copy(self.file["control_points"], self.file["control_points_bak"])
            self._giface.WriteLog(
                _("CONTROL_POINTS file saved for group <%s>") % self.xygroup
            )
            # self.SetStatusText(_('POINTS file saved'))

    def ReadGCPs(self):
        """
        Reads GCPs and georectified coordinates from POINTS file
        """

        self.GCPcount = 0

        sourceMapWin = self.SrcMapWindow
        targetMapWin = self.TgtMapWindow

        if not sourceMapWin:
            GError(parent=self, message=_("source mapwin not defined"))

        if not targetMapWin:
            GError(parent=self, message=_("target mapwin not defined"))

        try:
            f = open(self.file["control_points"], "r")
            GCPcnt = 0

            for line in f.readlines():
                if line[0] == "#" or line == "":
                    continue
                line = line.replace("\n", "").strip()
                coords = list(map(float, line.split()))
                if coords[6] == 1:
                    check = True
                    self.GCPcount += 1
                else:
                    check = False

                self.AddGCP(event=None)
                self.SetGCPData("source", (coords[0], coords[1]), sourceMapWin)
                self.SetGCPData("target", (coords[3], coords[4]), targetMapWin)
                index = self.list.GetSelected()
                if index != wx.NOT_FOUND:
                    self.list.CheckItem(index, check)
                GCPcnt += 1

        except IOError as err:
            GError(
                parent=self,
                message="%s <%s>. %s%s"
                % (
                    _("Reading CONTROL_POINTS file failed"),
                    self.file["control_points"],
                    os.linesep,
                    err,
                ),
            )
            return

        f.close()

        if GCPcnt == 0:
            # 3 gcp is minimum
            for i in range(3):
                self.AddGCP(None)

        if self.CheckGCPcount():
            # calculate RMS
            self.RMSError(self.xygroup, self.gr_order)

    def ReloadGCPs(self, event):
        """Reload data from file"""

        # use backup
        shutil.copy(self.file["control_points_bak"], self.file["control_points"])

        # delete all items in mapcoordlist
        self.mapcoordlist = []
        self.mapcoordlist.append(
            [
                0,  # GCP number
                0.0,  # source east
                0.0,  # source north
                0.0,  # source height
                0.0,  # target east
                0.0,  # target north
                0.0,  # target height
                0.0,  # forward error
                0.0,
            ]
        )  # backward error

        self.list.LoadData()
        self.itemDataMap = self.mapcoordlist

        if self._col != -1:
            self.list.ClearColumnImage(self._col)
        self._colSortFlag = [1] * self.list.GetColumnCount()

        # draw GCPs (source and target)
        sourceMapWin = self.SrcMapWindow
        sourceMapWin.UpdateMap(render=False, renderVector=False)
        if self.show_target:
            targetMapWin = self.TgtMapWindow
            targetMapWin.UpdateMap(render=False, renderVector=False)

    def OnFocus(self, event):
        # TODO: it is here just to remove old or obsolate beavior of base class gcp/MapPanel?
        # self.grwiz.SwitchEnv('source')
        pass

    def _onMouseLeftUpPointer(self, mapWindow, x, y):
        if mapWindow == self.SrcMapWindow:
            coordtype = "source"
        else:
            coordtype = "target"

        coord = (x, y)
        self.SetGCPData(coordtype, coord, self, confirm=True)
        mapWindow.UpdateMap(render=False, renderVector=False)

    def OnRMS(self, event):
        """
        RMS button handler
        """
        self.RMSError(self.xygroup, self.gr_order)

        sourceMapWin = self.SrcMapWindow
        sourceMapWin.UpdateMap(render=False, renderVector=False)
        if self.show_target:
            targetMapWin = self.TgtMapWindow
            targetMapWin.UpdateMap(render=False, renderVector=False)

    def CheckGCPcount(self, msg=False):
        """
        Checks to make sure that the minimum number of GCPs have been defined and
        are active for the selected transformation order
        """
        if (
            (self.GCPcount < 3 and self.gr_order == 1)
            or (self.GCPcount < 6 and self.gr_order == 2)
            or (self.GCPcount < 10 and self.gr_order == 3)
        ):
            if msg:
                GWarning(
                    parent=self,
                    message=_(
                        "Insufficient points defined and active (checked) "
                        "for selected rectification method (order: %d).\n"
                        "3+ points needed for 1st order,\n"
                        "6+ points for 2nd order, and\n"
                        "10+ points for 3rd order."
                    )
                    % self.gr_order,
                )
                return False
        else:
            return True

    def OnGeorect(self, event):
        """
        Georectifies map(s) in group using i.ortho.rectify or v.rectify
        """
        global maptype
        self.SaveGCPs(None)

        if not self.CheckGCPcount(msg=True):
            return

        if maptype == "raster":
            self.grwiz.SwitchEnv("source")

            if self.clip_to_region:
                flags = "ac"
            else:
                flags = "a"

            busy = wx.BusyInfo(_("Rectifying images, please wait..."), parent=self)
            wx.GetApp().Yield()

            ret, msg = RunCommand(
                "i.ortho.rectify",
                parent=self,
                getErrorMsg=True,
                quiet=True,
                group=self.xygroup,
                extension=self.extension,
                method=self.gr_method,
                angle=self.grwiz.cam_angle,
                flags=flags,
            )

            del busy

            # provide feedback on failure
            if ret != 0:
                print(msg, file=sys.stderr)

        elif maptype == "vector":
            # loop through all vectors in VREF

            self.grwiz.SwitchEnv("source")

            # make list of vectors to georectify from VREF
            f = open(self.file["vgrp"])
            vectlist = []
            try:
                for vect in f.readlines():
                    vect = vect.strip("\n")
                    if len(vect) < 1:
                        continue
                    vectlist.append(vect)
            finally:
                f.close()

            # georectify each vector in VREF using v.rectify
            for vect in vectlist:
                self.outname = str(vect.split("@")[0]) + self.extension
                self._giface.WriteLog(
                    text=_("Transforming <%s>...") % vect,
                    notification=Notification.MAKE_VISIBLE,
                )
                ret = msg = ""

                busy = wx.BusyInfo(
                    _("Rectifying vector map <%s>, please wait...") % vect, parent=self
                )
                wx.GetApp().Yield()

                ret, msg = RunCommand(
                    "v.rectify",
                    parent=self,
                    getErrorMsg=True,
                    quiet=True,
                    input=vect,
                    output=self.outname,
                    group=self.xygroup,
                    order=self.gr_order,
                )

                del busy

                # provide feedback on failure
                if ret != 0:
                    print(msg, file=sys.stderr)

        self.grwiz.SwitchEnv("target")

    def OnGeorectDone(self, **kargs):
        """Print final message"""
        global maptype
        if maptype == "raster":
            return

        returncode = kargs["returncode"]

        if returncode == 0:
            self.VectGRList.append(self.outname)
            print("*****vector list = " + str(self.VectGRList), file=sys.stderr)
        else:
            self._giface.WriteError(
                _("Georectification of vector map <%s> failed") % self.outname
            )

    def OnSettings(self, event):
        """GCP Manager settings"""
        dlg = GrSettingsDialog(
            parent=self,
            giface=self._giface,
            id=wx.ID_ANY,
            title=_("GCP Manager settings"),
        )

        if dlg.ShowModal() == wx.ID_OK:
            pass

        dlg.Destroy()

    def UpdateColours(
        self,
        srcrender=False,
        srcrenderVector=False,
        tgtrender=False,
        tgtrenderVector=False,
    ):
        """update colours"""
        highest_fwd_err = 0.0
        self.highest_key = 0
        highest_idx = 0

        for index in range(self.list.GetItemCount()):
            if self.list.IsItemChecked(index):
                key = self.list.GetItemData(index)
                fwd_err = self.mapcoordlist[key][5]

                if self.highest_only:
                    self.list.SetItemTextColour(index, wx.BLACK)
                    if highest_fwd_err < fwd_err:
                        highest_fwd_err = fwd_err
                        self.highest_key = key
                        highest_idx = index
                elif self.rmsthresh > 0:
                    if fwd_err > self.rmsthresh:
                        self.list.SetItemTextColour(index, wx.RED)
                    else:
                        self.list.SetItemTextColour(index, wx.BLACK)
            else:
                self.list.SetItemTextColour(index, wx.BLACK)

        if self.highest_only and highest_fwd_err > 0.0:
            self.list.SetItemTextColour(highest_idx, wx.RED)

        sourceMapWin = self.SrcMapWindow
        sourceMapWin.UpdateMap(render=srcrender, renderVector=srcrenderVector)
        if self.show_target:
            targetMapWin = self.TgtMapWindow
            targetMapWin.UpdateMap(render=tgtrender, renderVector=tgtrenderVector)

    def OnQuit(self, event):
        """Quit georectifier"""
        ret = wx.MessageBox(
            parent=self,
            caption=_("Quit GCP Manager"),
            message=_("Save ground control points?"),
            style=wx.ICON_QUESTION | wx.YES_NO | wx.CANCEL | wx.CENTRE,
        )

        if ret != wx.CANCEL:
            if ret == wx.YES:
                self.SaveGCPs(None)
            elif ret == wx.NO:
                # restore POINTS file from backup
                if os.path.exists(self.file["control_points_bak"]):
                    shutil.copy(
                        self.file["control_points_bak"], self.file["control_points"]
                    )

            if os.path.exists(self.file["control_points_bak"]):
                os.unlink(self.file["control_points_bak"])

            self.SrcMap.Clean()
            self.TgtMap.Clean()

            self.grwiz.Cleanup()
            self._mgr.UnInit()

            self.Destroy()

        # event.Skip()

    def OnGROrder(self, event):
        """
        sets transformation order for georectifying
        """
        if event:
            self.gr_order = event.GetInt() + 1

        numOfItems = self.list.GetItemCount()
        minNumOfItems = numOfItems

        if self.gr_order == 1:
            minNumOfItems = 3
            # self.SetStatusText(_('Insufficient points, 3+ points needed for 1st order'))

        elif self.gr_order == 2:
            minNumOfItems = 6
            diff = 6 - numOfItems
            # self.SetStatusText(_('Insufficient points, 6+ points needed for 2nd order'))

        elif self.gr_order == 3:
            minNumOfItems = 10
            # self.SetStatusText(_('Insufficient points, 10+ points needed for 3rd order'))

        for i in range(minNumOfItems - numOfItems):
            self.AddGCP(None)

        return minNumOfItems

    def RMSError(self, xygroup, order):
        """
        Uses i.ortho.transform to calculate forward and backward error for each used GCP
        in CONTROL_POINTS file and insert error values into GCP list.
        Calculates total forward and backward RMS error for all used points
        """
        # save GCPs to points file to make sure that all checked GCPs are used
        self.SaveGCPs(None)
        # self.SetStatusText('')

        if not self.CheckGCPcount(msg=True):
            return

        # get list of forward and reverse rms error values for each point
        self.grwiz.SwitchEnv("source")

        ret = RunCommand("i.ortho.transform", parent=self, read=True, group=xygroup)

        self.grwiz.SwitchEnv("target")

        if ret:
            errlist = ret.splitlines()
        else:
            GError(
                parent=self,
                message=_(
                    "Could not calculate RMS Error.\n"
                    "Possible error with i.ortho.transform."
                ),
            )
            return

        # insert error values into GCP list for checked items
        sdfactor = float(UserSettings.Get(group="gcpman", key="rms", subkey="sdfactor"))
        GCPcount = 0
        sumsq_fwd_err = 0.0
        sumsq_bkw_err = 0.0
        sum_fwd_err = 0.0
        highest_fwd_err = 0.0
        self.highest_key = 0
        highest_idx = 0

        for index in range(self.list.GetItemCount()):
            key = self.list.GetItemData(index)
            if self.list.IsItemChecked(index):
                fwd_err, bkw_err = errlist[GCPcount].split()
                self.list.SetItem(index, 7, fwd_err)
                self.list.SetItem(index, 8, bkw_err)
                self.mapcoordlist[key][7] = float(fwd_err)
                self.mapcoordlist[key][8] = float(bkw_err)
                self.list.SetItemTextColour(index, wx.BLACK)
                if self.highest_only:
                    if highest_fwd_err < float(fwd_err):
                        highest_fwd_err = float(fwd_err)
                        self.highest_key = key
                        highest_idx = index

                sumsq_fwd_err += float(fwd_err) ** 2
                sumsq_bkw_err += float(bkw_err) ** 2
                sum_fwd_err += float(fwd_err)
                GCPcount += 1
            else:
                self.list.SetItem(index, 7, "")
                self.list.SetItem(index, 8, "")
                self.mapcoordlist[key][7] = 0.0
                self.mapcoordlist[key][8] = 0.0
                self.list.SetItemTextColour(index, wx.BLACK)

        # SD
        if GCPcount > 0:
            self.rmsmean = sum_fwd_err / GCPcount
            self.rmssd = (sumsq_fwd_err - self.rmsmean ** 2) ** 0.5
            self.rmsthresh = self.rmsmean + sdfactor * self.rmssd
        else:
            self.rmsthresh = 0
            self.rmsmean = 0
            self.rmssd = 0

        if self.highest_only and highest_fwd_err > 0.0:
            self.list.SetItemTextColour(highest_idx, wx.RED)
        elif GCPcount > 0 and self.rmsthresh > 0 and not self.highest_only:
            for index in range(self.list.GetItemCount()):
                if self.list.IsItemChecked(index):
                    key = self.list.GetItemData(index)
                    if self.mapcoordlist[key][7] > self.rmsthresh:
                        self.list.SetItemTextColour(index, wx.RED)

        # calculate global RMS error (geometric mean)
        self.fwd_rmserror = round((sumsq_fwd_err / GCPcount) ** 0.5, 4)
        self.bkw_rmserror = round((sumsq_bkw_err / GCPcount) ** 0.5, 4)
        self.list.ResizeColumns()

    def GetNewExtent(self, region, map=None):

        coord_file = utils.GetTempfile()
        newreg = {
            "n": 0.0,
            "s": 0.0,
            "e": 0.0,
            "w": 0.0,
        }

        try:
            f = open(coord_file, mode="w")
            # NW corner
            f.write(str(region["e"]) + " " + str(region["n"]) + "\n")
            # NE corner
            f.write(str(region["e"]) + " " + str(region["s"]) + "\n")
            # SW corner
            f.write(str(region["w"]) + " " + str(region["n"]) + "\n")
            # SE corner
            f.write(str(region["w"]) + " " + str(region["s"]) + "\n")
        finally:
            f.close()

        # save GCPs to points file to make sure that all checked GCPs are used
        self.SaveGCPs(None)

        order = self.gr_order
        self.gr_order = 1

        if not self.CheckGCPcount(msg=True):
            self.gr_order = order
            return

        self.gr_order = order

        # get list of forward and reverse rms error values for each point
        self.grwiz.SwitchEnv("source")

        if map == "source":
            ret = RunCommand(
                "i.ortho.transform",
                parent=self,
                read=True,
                group=self.xygroup,
                format="dst",
                coords=coord_file,
            )

        elif map == "target":
            ret = RunCommand(
                "i.ortho.transform",
                parent=self,
                read=True,
                group=self.xygroup,
                flags="r",
                format="src",
                coords=coord_file,
            )

        os.unlink(coord_file)

        self.grwiz.SwitchEnv("target")

        if ret:
            errlist = ret.splitlines()
        else:
            GError(
                parent=self,
                message=_(
                    "Could not calculate new extends.\n"
                    "Possible error with i.ortho.transform."
                ),
            )
            return

        # fist corner
        e, n = errlist[0].split()
        fe = float(e)
        fn = float(n)
        newreg["n"] = fn
        newreg["s"] = fn
        newreg["e"] = fe
        newreg["w"] = fe
        # other three corners
        for i in range(1, 4):
            e, n = errlist[i].split()
            fe = float(e)
            fn = float(n)
            if fe < newreg["w"]:
                newreg["w"] = fe
            if fe > newreg["e"]:
                newreg["e"] = fe
            if fn < newreg["s"]:
                newreg["s"] = fn
            if fn > newreg["n"]:
                newreg["n"] = fn

        return newreg

    def OnHelp(self, event):
        """Show GCP Manager manual page"""
        self._giface.Help(entry="wxGUI.gcp")

    def OnUpdateActive(self, event):

        if self.activemap.GetSelection() == 0:
            self.MapWindow = self.SrcMapWindow
            self.Map = self.SrcMap
        else:
            self.MapWindow = self.TgtMapWindow
            self.Map = self.TgtMap

        self.UpdateActive(self.MapWindow)
        # for wingrass
        if os.name == "nt":
            self.MapWindow.SetFocus()

    def UpdateActive(self, win):

        # optionally disable tool zoomback tool
        self.GetMapToolbar().Enable(
            "zoomback", enable=(len(self.MapWindow.zoomhistory) > 1)
        )

        if self.activemap.GetSelection() != (win == self.TgtMapWindow):
            self.activemap.SetSelection(win == self.TgtMapWindow)
        self.StatusbarUpdate()

    def AdjustMap(self, newreg):
        """Adjust map window to new extents"""

        # adjust map window
        self.Map.region["n"] = newreg["n"]
        self.Map.region["s"] = newreg["s"]
        self.Map.region["e"] = newreg["e"]
        self.Map.region["w"] = newreg["w"]

        self.MapWindow.ZoomHistory(
            self.Map.region["n"],
            self.Map.region["s"],
            self.Map.region["e"],
            self.Map.region["w"],
        )

        # LL locations
        if self.Map.projinfo["proj"] == "ll":
            if newreg["n"] > 90.0:
                newreg["n"] = 90.0
            if newreg["s"] < -90.0:
                newreg["s"] = -90.0

        ce = newreg["w"] + (newreg["e"] - newreg["w"]) / 2
        cn = newreg["s"] + (newreg["n"] - newreg["s"]) / 2

        # calculate new center point and display resolution
        self.Map.region["center_easting"] = ce
        self.Map.region["center_northing"] = cn
        self.Map.region["ewres"] = (newreg["e"] - newreg["w"]) / self.Map.width
        self.Map.region["nsres"] = (newreg["n"] - newreg["s"]) / self.Map.height
        self.Map.AlignExtentFromDisplay()

        self.MapWindow.ZoomHistory(
            self.Map.region["n"],
            self.Map.region["s"],
            self.Map.region["e"],
            self.Map.region["w"],
        )

        if self.MapWindow.redrawAll is False:
            self.MapWindow.redrawAll = True

        self.MapWindow.UpdateMap()
        self.StatusbarUpdate()

    def OnZoomToSource(self, event):
        """Set target map window to match extents of source map window"""

        if not self.MapWindow == self.TgtMapWindow:
            self.MapWindow = self.TgtMapWindow
            self.Map = self.TgtMap
            self.UpdateActive(self.TgtMapWindow)

        # get new N, S, E, W for target
        newreg = self.GetNewExtent(self.SrcMap.region, "source")
        if newreg:
            self.AdjustMap(newreg)

    def OnZoomToTarget(self, event):
        """Set source map window to match extents of target map window"""

        if not self.MapWindow == self.SrcMapWindow:
            self.MapWindow = self.SrcMapWindow
            self.Map = self.SrcMap
            self.UpdateActive(self.SrcMapWindow)

        # get new N, S, E, W for target
        newreg = self.GetNewExtent(self.TgtMap.region, "target")
        if newreg:
            self.AdjustMap(newreg)

    def OnZoomMenuGCP(self, event):
        """Popup Zoom menu"""
        point = wx.GetMousePosition()
        zoommenu = Menu()
        # Add items to the menu

        zoomsource = wx.MenuItem(
            zoommenu, wx.ID_ANY, _("Adjust source display to target display")
        )
        zoommenu.AppendItem(zoomsource)
        self.Bind(wx.EVT_MENU, self.OnZoomToTarget, zoomsource)

        zoomtarget = wx.MenuItem(
            zoommenu, wx.ID_ANY, _("Adjust target display to source display")
        )
        zoommenu.AppendItem(zoomtarget)
        self.Bind(wx.EVT_MENU, self.OnZoomToSource, zoomtarget)

        # Popup the menu. If an item is selected then its handler
        # will be called before PopupMenu returns.
        self.PopupMenu(zoommenu)
        zoommenu.Destroy()

    def OnSize(self, event):
        """Adjust Map Windows after GCP Map Display has been resized"""
        # re-render image on idle
        self.resize = grass.clock()
        super(MapPanel, self).OnSize(event)

    def OnIdle(self, event):
        """GCP Map Display resized, adjust Map Windows"""
        if self.GetMapToolbar():
            if self.resize and self.resize + 0.2 < grass.clock():
                srcwidth, srcheight = self.SrcMapWindow.GetSize()
                tgtwidth, tgtheight = self.TgtMapWindow.GetSize()
                srcwidth = (srcwidth + tgtwidth) / 2
                if self.show_target:
                    self._mgr.GetPane("target").Hide()
                    self._mgr.Update()
                self._mgr.GetPane("source").BestSize((srcwidth, srcheight))
                self._mgr.GetPane("target").BestSize((srcwidth, tgtheight))
                if self.show_target:
                    self._mgr.GetPane("target").Show()
                self._mgr.Update()
                self.resize = False
            elif self.resize:
                event.RequestMore()
        pass


class GCPDisplay(FrameMixin, GCPPanel):
    """Map display for wrapping map panel with frame methods"""

    def __init__(self, parent, giface, grwiz, id, lmgr, Map, title, **kwargs):
        # init map panel
        GCPPanel.__init__(
            self,
            parent=parent,
            giface=giface,
            grwiz=grwiz,
            id=id,
            lmgr=lmgr,
            Map=Map,
            title=title,
            **kwargs,
        )
        # set system icon
        parent.iconsize = (16, 16)
        parent.SetIcon(
            wx.Icon(
                os.path.join(globalvar.ICONDIR, "grass_map.ico"), wx.BITMAP_TYPE_ICO
            )
        )

        # bind to frame
        parent.Bind(wx.EVT_CLOSE, self.OnQuit)

        # extend shortcuts and create frame accelerator table
        self.shortcuts_table.append((self.OnFullScreen, wx.ACCEL_NORMAL, wx.WXK_F11))
        self._initShortcuts()

        # add Map Display panel to Map Display frame
        sizer = wx.BoxSizer(wx.VERTICAL)
        sizer.Add(self, proportion=1, flag=wx.EXPAND)
        parent.SetSizer(sizer)
        parent.Layout()


class GCPList(ListCtrl, CheckListCtrlMixin, ListCtrlAutoWidthMixin):
    def __init__(
        self,
        parent,
        gcp,
        id=wx.ID_ANY,
        pos=wx.DefaultPosition,
        size=wx.DefaultSize,
        style=wx.LC_REPORT | wx.SUNKEN_BORDER | wx.LC_HRULES | wx.LC_SINGLE_SEL,
    ):

        ListCtrl.__init__(self, parent, id, pos, size, style)

        self.gcp = gcp  # GCP class
        self.render = True

        # Mixin settings
        CheckListCtrlMixin.__init__(self)
        ListCtrlAutoWidthMixin.__init__(self)
        # TextEditMixin.__init__(self)

        # tracks whether list items are checked or not
        self.CheckList = []

        self._Create()

        self.Bind(wx.EVT_LIST_ITEM_SELECTED, self.OnItemSelected)
        self.Bind(wx.EVT_LIST_ITEM_ACTIVATED, self.OnItemActivated)
        self.Bind(wx.EVT_LIST_COL_CLICK, self.OnColClick)

        self.selected = wx.NOT_FOUND
        self.selectedkey = -1

    def _Create(self):

        if 0:
            # normal, simple columns
            idx_col = 0
            for col in (
                _("use"),
                _("source E"),
                _("source N"),
                _("source Z"),
                _("target E"),
                _("target N"),
                _("target Z"),
                _("Forward error"),
                _("Backward error"),
            ):
                self.InsertColumn(idx_col, col)
                idx_col += 1
        else:
            # the hard way: we want images on the column header
            info = wx.ListItem()
            info.SetMask(wx.LIST_MASK_TEXT | wx.LIST_MASK_IMAGE | wx.LIST_MASK_FORMAT)
            info.SetImage(-1)
            info.m_format = wx.LIST_FORMAT_LEFT

            idx_col = 0
            for lbl in (
                _("use"),
                _("source E"),
                _("source N"),
                _("source Z"),
                _("target E"),
                _("target N"),
                _("target Z"),
                _("Forward error"),
                _("Backward error"),
            ):
                info.SetText(lbl)
                self.InsertColumn(idx_col, info)
                idx_col += 1

    def LoadData(self):
        """Load data into list"""
        self.DeleteAllItems()

        self.render = False
        if os.path.isfile(self.gcp.file["control_points"]):
            self.gcp.ReadGCPs()
        else:
            # 3 gcp is minimum
            for i in range(3):
                self.gcp.AddGCP(None)

        # select first point by default
        self.selected = 0
        self.selectedkey = self.GetItemData(self.selected)
        self.SetItemState(self.selected, wx.LIST_STATE_SELECTED, wx.LIST_STATE_SELECTED)

        self.ResizeColumns()
        self.render = True

        self.EnsureVisible(self.selected)

    def OnCheckItem(self, index, flag):
        """Item is checked/unchecked"""

        if self.render:
            # redraw points
            sourceMapWin = self.gcp.SrcMapWindow
            sourceMapWin.UpdateMap(render=False, renderVector=False)
            if self.gcp.show_target:
                targetMapWin = self.gcp.TgtMapWindow
                targetMapWin.UpdateMap(render=False, renderVector=False)

    def AddGCPItem(self):
        """
        Appends an item to GCP list
        """
        self.selectedkey = self.GetItemCount() + 1

        self.Append(
            [
                str(self.selectedkey),  # GCP number
                "0.0",  # source E
                "0.0",  # source N
                "0.0",  # source Z
                "0.0",  # target E
                "0.0",  # target N
                "0.0",  # target Z
                "",  # forward error
                "",
            ]
        )  # backward error

        self.selected = self.GetItemCount() - 1
        self.SetItemData(self.selected, self.selectedkey)

        self.SetItemState(self.selected, wx.LIST_STATE_SELECTED, wx.LIST_STATE_SELECTED)

        self.ResizeColumns()

        self.gcp.pointsToDrawSrc.AddItem(coords=[0, 0], label=str(self.selectedkey))
        self.gcp.pointsToDrawTgt.AddItem(coords=[0, 0], label=str(self.selectedkey))

        self.EnsureVisible(self.selected)

        return self.selected

    def DeleteGCPItem(self):
        """Deletes selected item in GCP list."""
        if self.selected == wx.NOT_FOUND:
            return

        key = self.GetItemData(self.selected)
        self.DeleteItem(self.selected)

        if self.selected != wx.NOT_FOUND:
            item = self.gcp.pointsToDrawSrc.GetItem(key - 1)
            self.gcp.pointsToDrawSrc.DeleteItem(item)

            item = self.gcp.pointsToDrawTgt.GetItem(key - 1)
            self.gcp.pointsToDrawTgt.DeleteItem(item)

        return key

    def ResizeColumns(self):
        """Resize columns"""
        minWidth = [90, 120]
        for i in range(self.GetColumnCount()):
            self.SetColumnWidth(i, wx.LIST_AUTOSIZE)
            # first column is checkbox, don't set to minWidth
            if i > 0 and self.GetColumnWidth(i) < minWidth[i > 4]:
                self.SetColumnWidth(i, minWidth[i > 4])

        self.SendSizeEvent()

    def GetSelected(self):
        """Get index of selected item"""
        return self.selected

    def OnItemSelected(self, event):
        """Item selected"""
        if self.render and self.selected != event.GetIndex():
            self.selected = event.GetIndex()
            self.selectedkey = self.GetItemData(self.selected)
            sourceMapWin = self.gcp.SrcMapWindow
            sourceMapWin.UpdateMap(render=False, renderVector=False)
            if self.gcp.show_target:
                targetMapWin = self.gcp.TgtMapWindow
                targetMapWin.UpdateMap(render=False, renderVector=False)
        event.Skip()

    def OnItemActivated(self, event):
        """
        When item double clicked, open editor to update coordinate values
        """
        coords = []
        index = event.GetIndex()
        key = self.GetItemData(index)
        changed = False

        for i in range(1, 7):
            coords.append(self.GetItem(index, i).GetText())

        dlg = EditGCP(parent=self, id=wx.ID_ANY, data=coords, gcpno=key)

        if dlg.ShowModal() == wx.ID_OK:
            values = dlg.GetValues()  # string

            if len(values) == 0:
                GError(
                    parent=self,
                    message=_("Invalid coordinate value. Operation canceled."),
                )
            else:
                for i in range(len(values)):
                    if values[i] != coords[i]:
                        self.SetItem(index, i + 1, values[i])
                        changed = True

                if changed:
                    # reset RMS and update mapcoordlist
                    self.SetItem(index, 7, "")
                    self.SetItem(index, 8, "")
                    key = self.GetItemData(index)
                    self.gcp.mapcoordlist[key] = [
                        key,
                        float(values[0]),
                        float(values[1]),
                        float(values[2]),
                        float(values[3]),
                        float(values[4]),
                        float(values[5]),
                        0.0,
                        0.0,
                    ]

                    self.gcp.pointsToDrawSrc.GetItem(key - 1).SetCoords(
                        [float(values[0]), float(values[1])]
                    )
                    self.gcp.pointsToDrawTgt.GetItem(key - 1).SetCoords(
                        [float(values[3]), float(values[4])]
                    )
                    self.gcp.UpdateColours()

    def OnColClick(self, event):
        """ListCtrl forgets selected item..."""
        self.selected = self.FindItem(-1, self.selectedkey)
        self.SetItemState(self.selected, wx.LIST_STATE_SELECTED, wx.LIST_STATE_SELECTED)

        event.Skip()


class VectGroup(wx.Dialog):
    """Dialog to create a vector group (VREF file) for georectifying

    .. todo::
        Replace by g.group
    """

    def __init__(
        self,
        parent,
        id,
        grassdb,
        location,
        mapset,
        group,
        style=wx.DEFAULT_DIALOG_STYLE,
    ):

        wx.Dialog.__init__(
            self, parent, id, style=style, title=_("Create vector map group")
        )

        self.grassdatabase = grassdb
        self.xylocation = location
        self.xymapset = mapset
        self.xygroup = group

        #
        # get list of valid vector directories
        #
        vectlist = os.listdir(
            os.path.join(self.grassdatabase, self.xylocation, self.xymapset, "vector")
        )
        for dir in vectlist:
            if not os.path.isfile(
                os.path.join(
                    self.grassdatabase,
                    self.xylocation,
                    self.xymapset,
                    "vector",
                    dir,
                    "coor",
                )
            ):
                vectlist.remove(dir)

        utils.ListSortLower(vectlist)

        # path to vref file
        self.vgrpfile = os.path.join(
            self.grassdatabase,
            self.xylocation,
            self.xymapset,
            "group",
            self.xygroup,
            "VREF",
        )

        #
        # buttons
        #
        self.btnCancel = Button(parent=self, id=wx.ID_CANCEL)
        self.btnOK = Button(parent=self, id=wx.ID_OK)
        self.btnOK.SetDefault()

        #
        # list of vector maps
        #
        self.listMap = CheckListBox(parent=self, id=wx.ID_ANY, choices=vectlist)

        if os.path.isfile(self.vgrpfile):
            f = open(self.vgrpfile)
            try:
                checked = []
                for line in f.readlines():
                    line = line.replace("\n", "")
                    if len(line) < 1:
                        continue
                    checked.append(line)
                self.listMap.SetCheckedStrings(checked)
            finally:
                f.close()

        line = wx.StaticLine(
            parent=self, id=wx.ID_ANY, size=(20, -1), style=wx.LI_HORIZONTAL
        )

        #
        # layout
        #
        sizer = wx.BoxSizer(wx.VERTICAL)

        box = wx.BoxSizer(wx.HORIZONTAL)
        box.Add(
            StaticText(
                parent=self,
                id=wx.ID_ANY,
                label=_("Select vector map(s) to add to group:"),
            ),
            flag=wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT | wx.LEFT,
            border=5,
        )

        box.Add(
            self.listMap,
            flag=wx.ALIGN_CENTER_VERTICAL | wx.ALIGN_RIGHT | wx.LEFT,
            border=5,
        )

        sizer.Add(box, flag=wx.ALIGN_RIGHT | wx.ALL, border=3)

        sizer.Add(
            line,
            proportion=0,
            flag=wx.GROW | wx.ALIGN_CENTER_VERTICAL | wx.LEFT | wx.RIGHT,
            border=5,
        )

        # buttons
        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOK)
        btnSizer.Realize()

        sizer.Add(
            btnSizer, proportion=0, flag=wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border=5
        )

        self.SetSizer(sizer)
        sizer.Fit(self)
        self.Layout()

    def MakeVGroup(self):
        """Create VREF file"""
        vgrouplist = []
        for item in range(self.listMap.GetCount()):
            if not self.listMap.IsChecked(item):
                continue
            vgrouplist.append(self.listMap.GetString(item) + "@" + self.xymapset)

        f = open(self.vgrpfile, mode="w")
        try:
            for vect in vgrouplist:
                f.write(vect + "\n")
        finally:
            f.close()


class EditGCP(wx.Dialog):
    def __init__(
        self,
        parent,
        data,
        gcpno,
        id=wx.ID_ANY,
        title=_("Edit GCP"),
        style=wx.DEFAULT_DIALOG_STYLE,
    ):
        """Dialog for editing GPC and map coordinates in list control"""

        wx.Dialog.__init__(self, parent, id, title=title, style=style)

        panel = wx.Panel(parent=self)

        sizer = wx.BoxSizer(wx.VERTICAL)

        box = StaticBox(
            parent=panel,
            id=wx.ID_ANY,
            label=" %s %s " % (_("Ground Control Point No."), str(gcpno)),
        )
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)

        # source coordinates
        gridSizer = wx.GridBagSizer(vgap=5, hgap=5)
        self.xcoord = TextCtrl(parent=panel, id=wx.ID_ANY, size=(150, -1))
        self.ycoord = TextCtrl(parent=panel, id=wx.ID_ANY, size=(150, -1))
        self.zcoord = TextCtrl(parent=panel, id=wx.ID_ANY, size=(150, -1))
        self.ecoord = TextCtrl(parent=panel, id=wx.ID_ANY, size=(150, -1))
        self.ncoord = TextCtrl(parent=panel, id=wx.ID_ANY, size=(150, -1))
        self.hcoord = TextCtrl(parent=panel, id=wx.ID_ANY, size=(150, -1))

        # swap source N, target E
        tmp_coord = data[1]
        data[1] = data[2]
        data[2] = tmp_coord

        row = 0
        col = 0
        idx = 0
        for label, win in (
            (_("source E:"), self.xcoord),
            (_("target E:"), self.ecoord),
            (_("source N:"), self.ycoord),
            (_("target N:"), self.ncoord),
            (_("source Z:"), self.zcoord),
            (_("target Z:"), self.hcoord),
        ):
            label = StaticText(parent=panel, id=wx.ID_ANY, label=label)
            gridSizer.Add(label, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, col))

            col += 1
            win.SetValue(str(data[idx]))

            gridSizer.Add(win, pos=(row, col))

            col += 1
            idx += 1

            if col > 3:
                row += 1
                col = 0

        boxSizer.Add(gridSizer, proportion=1, flag=wx.EXPAND | wx.ALL, border=5)

        sizer.Add(boxSizer, proportion=1, flag=wx.EXPAND | wx.ALL, border=5)

        #
        # buttons
        #
        self.btnCancel = Button(panel, wx.ID_CANCEL)
        self.btnOk = Button(panel, wx.ID_OK)
        self.btnOk.SetDefault()

        btnSizer = wx.StdDialogButtonSizer()
        btnSizer.AddButton(self.btnCancel)
        btnSizer.AddButton(self.btnOk)
        btnSizer.Realize()

        sizer.Add(btnSizer, proportion=0, flag=wx.ALIGN_RIGHT | wx.ALL, border=5)

        panel.SetSizer(sizer)
        sizer.Fit(self)

    def GetValues(self, columns=None):
        """Return list of values (as strings)."""
        valuelist = []
        try:
            float(self.xcoord.GetValue())
            float(self.ycoord.GetValue())
            float(self.zcoord.GetValue())
            float(self.ecoord.GetValue())
            float(self.ncoord.GetValue())
            float(self.hcoord.GetValue())
        except ValueError:
            return valuelist

        valuelist.append(self.xcoord.GetValue())
        valuelist.append(self.ycoord.GetValue())
        valuelist.append(self.zcoord.GetValue())
        valuelist.append(self.ecoord.GetValue())
        valuelist.append(self.ncoord.GetValue())
        valuelist.append(self.hcoord.GetValue())

        return valuelist


class GrSettingsDialog(wx.Dialog):
    def __init__(
        self,
        parent,
        id,
        giface,
        title,
        pos=wx.DefaultPosition,
        size=wx.DefaultSize,
        style=wx.DEFAULT_DIALOG_STYLE,
    ):
        wx.Dialog.__init__(self, parent, id, title, pos, size, style)
        """
        Dialog to set profile text options: font, title
        and font size, axis labels and font size
        """
        #
        # initialize variables
        #
        self.parent = parent
        self.new_src_map = src_map
        self.new_tgt_map = {"raster": tgt_map["raster"], "vector": tgt_map["vector"]}
        self.sdfactor = 0

        self.symbol = {}

        self.methods = [
            "nearest",
            "linear",
            "linear_f",
            "cubic",
            "cubic_f",
            "lanczos",
            "lanczos_f",
        ]

        # notebook
        notebook = wx.Notebook(parent=self, id=wx.ID_ANY, style=wx.BK_DEFAULT)
        self.__CreateSymbologyPage(notebook)
        self.__CreateRectificationPage(notebook)

        # buttons
        btnSave = Button(self, wx.ID_SAVE)
        btnApply = Button(self, wx.ID_APPLY)
        btnClose = Button(self, wx.ID_CLOSE)
        btnApply.SetDefault()

        # bindings
        btnApply.Bind(wx.EVT_BUTTON, self.OnApply)
        btnApply.SetToolTip(_("Apply changes for the current session"))
        btnSave.Bind(wx.EVT_BUTTON, self.OnSave)
        btnSave.SetToolTip(
            _(
                "Apply and save changes to user settings file (default for next sessions)"
            )
        )
        btnClose.Bind(wx.EVT_BUTTON, self.OnClose)
        btnClose.SetToolTip(_("Close dialog"))

        # sizers
        btnSizer = wx.BoxSizer(wx.HORIZONTAL)
        btnSizer.Add(btnApply, flag=wx.LEFT | wx.RIGHT, border=5)
        btnSizer.Add(btnSave, flag=wx.LEFT | wx.RIGHT, border=5)
        btnSizer.Add(btnClose, flag=wx.LEFT | wx.RIGHT, border=5)

        # sizers
        mainSizer = wx.BoxSizer(wx.VERTICAL)
        mainSizer.Add(notebook, proportion=1, flag=wx.EXPAND | wx.ALL, border=5)
        mainSizer.Add(btnSizer, proportion=0, flag=wx.ALIGN_RIGHT | wx.ALL, border=5)
        #              flag=wx.EXPAND | wx.ALL | wx.ALIGN_CENTER, border=5)

        self.SetSizer(mainSizer)
        mainSizer.Fit(self)

    def __CreateSymbologyPage(self, notebook):
        """Create notebook page with symbology settings"""

        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("Symbology"))

        sizer = wx.BoxSizer(wx.VERTICAL)

        rmsgridSizer = wx.GridBagSizer(vgap=5, hgap=5)

        # highlight only highest forward RMS error
        self.highlighthighest = wx.CheckBox(
            parent=panel, id=wx.ID_ANY, label=_("Highlight highest RMS error only")
        )
        hh = UserSettings.Get(group="gcpman", key="rms", subkey="highestonly")
        self.highlighthighest.SetValue(hh)
        rmsgridSizer.Add(
            self.highlighthighest, flag=wx.ALIGN_CENTER_VERTICAL, pos=(0, 0)
        )

        # RMS forward error threshold
        rmslabel = StaticText(
            parent=panel,
            id=wx.ID_ANY,
            label=_("Highlight RMS error > M + SD * factor:"),
        )
        rmslabel.SetToolTip(
            _(
                "Highlight GCPs with an RMS error larger than \n"
                "mean + standard deviation * given factor. \n"
                "Recommended values for this factor are between 1 and 2."
            )
        )
        rmsgridSizer.Add(rmslabel, flag=wx.ALIGN_CENTER_VERTICAL, pos=(1, 0))
        sdfactor = UserSettings.Get(group="gcpman", key="rms", subkey="sdfactor")
        self.rmsWin = TextCtrl(
            parent=panel, id=wx.ID_ANY, size=(70, -1), style=wx.TE_NOHIDESEL
        )
        self.rmsWin.SetValue("%s" % str(sdfactor))
        if self.parent.highest_only:
            self.rmsWin.Disable()

        self.symbol["sdfactor"] = self.rmsWin.GetId()
        rmsgridSizer.Add(self.rmsWin, flag=wx.ALIGN_RIGHT, pos=(1, 1))
        rmsgridSizer.AddGrowableCol(1)
        sizer.Add(rmsgridSizer, flag=wx.EXPAND | wx.ALL, border=5)

        box = StaticBox(parent=panel, id=wx.ID_ANY, label=" %s " % _("Symbol settings"))
        boxSizer = wx.StaticBoxSizer(box, wx.VERTICAL)
        gridSizer = wx.GridBagSizer(vgap=5, hgap=5)

        #
        # general symbol color
        #
        row = 0
        label = StaticText(parent=panel, id=wx.ID_ANY, label=_("Color:"))
        gridSizer.Add(label, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, 0))
        col = UserSettings.Get(group="gcpman", key="symbol", subkey="color")
        colWin = csel.ColourSelect(
            parent=panel, id=wx.ID_ANY, colour=wx.Colour(col[0], col[1], col[2], 255)
        )
        self.symbol["color"] = colWin.GetId()
        gridSizer.Add(colWin, flag=wx.ALIGN_RIGHT, pos=(row, 1))

        #
        # symbol color for high forward RMS error
        #
        row += 1
        label = StaticText(
            parent=panel, id=wx.ID_ANY, label=_("Color for high RMS error:")
        )
        gridSizer.Add(label, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, 0))
        hcol = UserSettings.Get(group="gcpman", key="symbol", subkey="hcolor")
        hcolWin = csel.ColourSelect(
            parent=panel, id=wx.ID_ANY, colour=wx.Colour(hcol[0], hcol[1], hcol[2], 255)
        )
        self.symbol["hcolor"] = hcolWin.GetId()
        gridSizer.Add(hcolWin, flag=wx.ALIGN_RIGHT, pos=(row, 1))

        #
        # symbol color for selected GCP
        #
        row += 1
        label = StaticText(
            parent=panel, id=wx.ID_ANY, label=_("Color for selected GCP:")
        )
        gridSizer.Add(label, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, 0))
        scol = UserSettings.Get(group="gcpman", key="symbol", subkey="scolor")
        scolWin = csel.ColourSelect(
            parent=panel, id=wx.ID_ANY, colour=wx.Colour(scol[0], scol[1], scol[2], 255)
        )
        self.symbol["scolor"] = scolWin.GetId()
        gridSizer.Add(scolWin, flag=wx.ALIGN_RIGHT, pos=(row, 1))

        #
        # symbol color for unused GCP
        #
        row += 1
        label = StaticText(
            parent=panel, id=wx.ID_ANY, label=_("Color for unused GCPs:")
        )
        gridSizer.Add(label, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, 0))
        ucol = UserSettings.Get(group="gcpman", key="symbol", subkey="ucolor")
        ucolWin = csel.ColourSelect(
            parent=panel, id=wx.ID_ANY, colour=wx.Colour(ucol[0], ucol[1], ucol[2], 255)
        )
        self.symbol["ucolor"] = ucolWin.GetId()
        gridSizer.Add(ucolWin, flag=wx.ALIGN_RIGHT, pos=(row, 1))

        # show unused GCPs
        row += 1
        self.showunused = wx.CheckBox(
            parent=panel, id=wx.ID_ANY, label=_("Show unused GCPs")
        )
        shuu = UserSettings.Get(group="gcpman", key="symbol", subkey="unused")
        self.showunused.SetValue(shuu)
        gridSizer.Add(self.showunused, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, 0))

        #
        # symbol size
        #
        row += 1
        label = StaticText(parent=panel, id=wx.ID_ANY, label=_("Symbol size:"))
        gridSizer.Add(label, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, 0))
        symsize = int(UserSettings.Get(group="gcpman", key="symbol", subkey="size"))
        sizeWin = SpinCtrl(parent=panel, id=wx.ID_ANY, min=1, max=20)
        sizeWin.SetValue(symsize)
        self.symbol["size"] = sizeWin.GetId()
        gridSizer.Add(sizeWin, flag=wx.ALIGN_RIGHT, pos=(row, 1))

        #
        # symbol width
        #
        row += 1
        label = StaticText(parent=panel, id=wx.ID_ANY, label=_("Line width:"))
        gridSizer.Add(label, flag=wx.ALIGN_CENTER_VERTICAL, pos=(row, 0))
        width = int(UserSettings.Get(group="gcpman", key="symbol", subkey="width"))
        widWin = SpinCtrl(parent=panel, id=wx.ID_ANY, min=1, max=10)
        widWin.SetValue(width)
        self.symbol["width"] = widWin.GetId()
        gridSizer.Add(widWin, flag=wx.ALIGN_RIGHT, pos=(row, 1))
        gridSizer.AddGrowableCol(1)

        boxSizer.Add(gridSizer, flag=wx.EXPAND)
        sizer.Add(boxSizer, flag=wx.EXPAND | wx.ALL, border=5)

        #
        # maps to display
        #
        # source map to display
        self.srcselection = Select(
            panel,
            id=wx.ID_ANY,
            size=globalvar.DIALOG_GSELECT_SIZE,
            type="maptype",
            updateOnPopup=False,
        )
        self.parent.grwiz.SwitchEnv("source")
        self.srcselection.SetElementList(maptype)
        # filter out all maps not in group
        self.srcselection.tcp.GetElementList(elements=self.parent.src_maps)

        # target map(s) to display
        self.parent.grwiz.SwitchEnv("target")
        self.tgtrastselection = Select(
            panel,
            id=wx.ID_ANY,
            size=globalvar.DIALOG_GSELECT_SIZE,
            type="raster",
            updateOnPopup=False,
        )
        self.tgtrastselection.SetElementList("cell")
        self.tgtrastselection.GetElementList()

        self.tgtvectselection = Select(
            panel,
            id=wx.ID_ANY,
            size=globalvar.DIALOG_GSELECT_SIZE,
            type="vector",
            updateOnPopup=False,
        )
        self.tgtvectselection.SetElementList("vector")
        self.tgtvectselection.GetElementList()

        sizer.Add(
            StaticText(
                parent=panel, id=wx.ID_ANY, label=_("Select source map to display:")
            ),
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        sizer.Add(
            self.srcselection,
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        self.srcselection.SetValue(src_map)
        sizer.Add(
            StaticText(
                parent=panel,
                id=wx.ID_ANY,
                label=_("Select target raster map to display:"),
            ),
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        sizer.Add(
            self.tgtrastselection,
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        self.tgtrastselection.SetValue(tgt_map["raster"])
        sizer.Add(
            StaticText(
                parent=panel,
                id=wx.ID_ANY,
                label=_("Select target vector map to display:"),
            ),
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        sizer.Add(
            self.tgtvectselection,
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        self.tgtvectselection.SetValue(tgt_map["vector"])

        # bindings
        self.highlighthighest.Bind(wx.EVT_CHECKBOX, self.OnHighlight)
        self.rmsWin.Bind(wx.EVT_TEXT, self.OnSDFactor)
        self.srcselection.Bind(wx.EVT_TEXT, self.OnSrcSelection)
        self.tgtrastselection.Bind(wx.EVT_TEXT, self.OnTgtRastSelection)
        self.tgtvectselection.Bind(wx.EVT_TEXT, self.OnTgtVectSelection)

        panel.SetSizer(sizer)

        return panel

    def __CreateRectificationPage(self, notebook):
        """Create notebook page with symbology settings"""

        panel = wx.Panel(parent=notebook, id=wx.ID_ANY)
        notebook.AddPage(page=panel, text=_("Rectification"))

        sizer = wx.BoxSizer(wx.VERTICAL)

        # transformation order
        self.rb_grorder = wx.RadioBox(
            parent=panel,
            id=wx.ID_ANY,
            label=" %s " % _("Select rectification order"),
            choices=[_("1st order"), _("2nd order"), _("3rd order")],
            majorDimension=wx.RA_SPECIFY_COLS,
        )
        sizer.Add(self.rb_grorder, proportion=0, flag=wx.EXPAND | wx.ALL, border=5)
        self.rb_grorder.SetSelection(self.parent.gr_order - 1)

        # interpolation method
        gridSizer = wx.GridBagSizer(vgap=5, hgap=5)
        gridSizer.Add(
            StaticText(
                parent=panel, id=wx.ID_ANY, label=_("Select interpolation method:")
            ),
            pos=(0, 0),
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        self.grmethod = wx.Choice(parent=panel, id=wx.ID_ANY, choices=self.methods)
        gridSizer.Add(self.grmethod, pos=(0, 1), flag=wx.ALIGN_RIGHT, border=5)
        self.grmethod.SetStringSelection(self.parent.gr_method)
        gridSizer.AddGrowableCol(1)
        sizer.Add(gridSizer, flag=wx.EXPAND | wx.ALL, border=5)

        # clip to region
        self.check = wx.CheckBox(
            parent=panel,
            id=wx.ID_ANY,
            label=_("clip to computational region in target location"),
        )
        sizer.Add(self.check, proportion=0, flag=wx.EXPAND | wx.ALL, border=5)
        self.check.SetValue(self.parent.clip_to_region)

        # extension
        sizer.Add(
            StaticText(
                parent=panel, id=wx.ID_ANY, label=_("Extension for output maps:")
            ),
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )
        self.ext_txt = TextCtrl(parent=panel, id=wx.ID_ANY, value="", size=(350, -1))
        self.ext_txt.SetValue(self.parent.extension)
        sizer.Add(
            self.ext_txt,
            proportion=0,
            flag=wx.ALIGN_LEFT | wx.ALIGN_CENTER_VERTICAL | wx.ALL,
            border=5,
        )

        # bindings
        self.ext_txt.Bind(wx.EVT_TEXT, self.OnExtension)
        self.Bind(wx.EVT_RADIOBOX, self.parent.OnGROrder, self.rb_grorder)
        self.Bind(wx.EVT_CHOICE, self.OnMethod, self.grmethod)
        self.Bind(wx.EVT_CHECKBOX, self.OnClipRegion, self.check)

        panel.SetSizer(sizer)

        return panel

    def OnHighlight(self, event):
        """Checkbox 'highlighthighest' checked/unchecked"""
        if self.highlighthighest.IsChecked():
            self.parent.highest_only = True
            self.rmsWin.Disable()
        else:
            self.parent.highest_only = False
            self.rmsWin.Enable()

    def OnSDFactor(self, event):
        """New factor for RMS threshold = M + SD * factor"""
        try:
            self.sdfactor = float(self.rmsWin.GetValue())
        except ValueError:
            return
        if self.sdfactor <= 0:
            GError(parent=self, message=_("RMS threshold factor must be > 0"))
        elif self.sdfactor < 1:
            GError(
                parent=self,
                message=_(
                    "RMS threshold factor is < 1\n"
                    "Too many points might be highlighted"
                ),
            )

    def OnSrcSelection(self, event):
        """Source map to display selected"""
        global src_map

        tmp_map = self.srcselection.GetValue()

        if not tmp_map == "" and not tmp_map == src_map:
            self.new_src_map = tmp_map

    def OnTgtRastSelection(self, event):
        """Target map to display selected"""
        global tgt_map

        self.new_tgt_map["raster"] = self.tgtrastselection.GetValue()

    def OnTgtVectSelection(self, event):
        """Target map to display selected"""
        global tgt_map

        self.new_tgt_map["vector"] = self.tgtvectselection.GetValue()

    def OnMethod(self, event):
        self.parent.gr_method = self.methods[event.GetSelection()]

    def OnClipRegion(self, event):
        self.parent.clip_to_region = event.IsChecked()

    def OnExtension(self, event):
        self.parent.extension = self.ext_txt.GetValue()

    def UpdateSettings(self):
        global src_map
        global tgt_map
        global maptype

        layers = None

        UserSettings.Set(
            group="gcpman",
            key="rms",
            subkey="highestonly",
            value=self.highlighthighest.GetValue(),
        )

        if self.sdfactor > 0:
            UserSettings.Set(
                group="gcpman", key="rms", subkey="sdfactor", value=self.sdfactor
            )

            self.parent.sdfactor = self.sdfactor
            if self.parent.rmsthresh > 0:
                self.parent.rmsthresh = (
                    self.parent.rmsmean + self.parent.sdfactor * self.parent.rmssd
                )

        UserSettings.Set(
            group="gcpman",
            key="symbol",
            subkey="color",
            value=tuple(wx.FindWindowById(self.symbol["color"]).GetColour()),
        )
        UserSettings.Set(
            group="gcpman",
            key="symbol",
            subkey="hcolor",
            value=tuple(wx.FindWindowById(self.symbol["hcolor"]).GetColour()),
        )
        UserSettings.Set(
            group="gcpman",
            key="symbol",
            subkey="scolor",
            value=tuple(wx.FindWindowById(self.symbol["scolor"]).GetColour()),
        )
        UserSettings.Set(
            group="gcpman",
            key="symbol",
            subkey="ucolor",
            value=tuple(wx.FindWindowById(self.symbol["ucolor"]).GetColour()),
        )
        UserSettings.Set(
            group="gcpman",
            key="symbol",
            subkey="unused",
            value=self.showunused.GetValue(),
        )
        UserSettings.Set(
            group="gcpman",
            key="symbol",
            subkey="size",
            value=wx.FindWindowById(self.symbol["size"]).GetValue(),
        )
        UserSettings.Set(
            group="gcpman",
            key="symbol",
            subkey="width",
            value=wx.FindWindowById(self.symbol["width"]).GetValue(),
        )

        srcrender = False
        srcrenderVector = False
        tgtrender = False
        tgtrenderVector = False
        reload_target = False
        if self.new_src_map != src_map:
            # remove old layer
            layers = self.parent.grwiz.SrcMap.GetListOfLayers()
            self.parent.grwiz.SrcMap.DeleteLayer(layers[0])

            src_map = self.new_src_map
            if maptype == "raster":
                cmdlist = ["d.rast", "map=%s" % src_map]
                srcrender = True
            else:
                cmdlist = ["d.vect", "map=%s" % src_map]
                srcrenderVector = True
            self.parent.grwiz.SwitchEnv("source")
            name, found = utils.GetLayerNameFromCmd(cmdlist)
            self.parent.grwiz.SrcMap.AddLayer(
                ltype=maptype,
                command=cmdlist,
                active=True,
                name=name,
                hidden=False,
                opacity=1.0,
                render=False,
            )

            self.parent.grwiz.SwitchEnv("target")

        if (
            self.new_tgt_map["raster"] != tgt_map["raster"]
            or self.new_tgt_map["vector"] != tgt_map["vector"]
        ):
            # remove all layers
            layers = self.parent.grwiz.TgtMap.GetListOfLayers()
            while layers:
                self.parent.grwiz.TgtMap.DeleteLayer(layers[0])
                del layers[0]
                layers = self.parent.grwiz.TgtMap.GetListOfLayers()
            # self.parent.grwiz.TgtMap.DeleteAllLayers()
            reload_target = True
            tgt_map["raster"] = self.new_tgt_map["raster"]
            tgt_map["vector"] = self.new_tgt_map["vector"]

            if tgt_map["raster"] != "":
                cmdlist = ["d.rast", "map=%s" % tgt_map["raster"]]
                name, found = utils.GetLayerNameFromCmd(cmdlist)
                self.parent.grwiz.TgtMap.AddLayer(
                    ltype="raster",
                    command=cmdlist,
                    active=True,
                    name=name,
                    hidden=False,
                    opacity=1.0,
                    render=False,
                )

                tgtrender = True

            if tgt_map["vector"] != "":
                cmdlist = ["d.vect", "map=%s" % tgt_map["vector"]]
                name, found = utils.GetLayerNameFromCmd(cmdlist)
                self.parent.grwiz.TgtMap.AddLayer(
                    ltype="vector",
                    command=cmdlist,
                    active=True,
                    name=name,
                    hidden=False,
                    opacity=1.0,
                    render=False,
                )

                tgtrenderVector = True

        if tgt_map["raster"] == "" and tgt_map["vector"] == "":
            if self.parent.show_target:
                self.parent.show_target = False
                self.parent._mgr.GetPane("target").Hide()
                self.parent._mgr.Update()
                self.parent.activemap.SetSelection(0)
                self.parent.activemap.Enable(False)
                self.parent.GetMapToolbar().Enable("zoommenu", enable=False)
        else:
            if not self.parent.show_target:
                self.parent.show_target = True
                self.parent._mgr.GetPane("target").Show()
                self.parent._mgr.Update()
                self.parent.activemap.SetSelection(0)
                self.parent.activemap.Enable(True)
                self.parent.GetMapToolbar().Enable("zoommenu", enable=True)
                self.parent.TgtMapWindow.ZoomToMap(
                    layers=self.parent.TgtMap.GetListOfLayers()
                )

        self.parent.UpdateColours(
            srcrender, srcrenderVector, tgtrender, tgtrenderVector
        )
        self.parent.SetSettings()

    def OnSave(self, event):
        """Button 'Save' pressed"""
        self.UpdateSettings()
        fileSettings = {}
        UserSettings.ReadSettingsFile(settings=fileSettings)
        fileSettings["gcpman"] = UserSettings.Get(group="gcpman")
        file = UserSettings.SaveToFile(fileSettings)
        self.parent._giface.WriteLog(
            _("GCP Manager settings saved to file '%s'.") % file
        )
        # self.Close()

    def OnApply(self, event):
        """Button 'Apply' pressed"""
        self.UpdateSettings()
        # self.Close()

    def OnClose(self, event):
        """Button 'Cancel' pressed"""
        self.Close()