# -*- python -*-
# -*- coding: utf-8 -*-
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2011-2016       Serge Noiraud
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, see <https://www.gnu.org/licenses/>.
#

# -------------------------------------------------------------------------
#
# Python modules
#
# -------------------------------------------------------------------------
from math import pi
import logging

# -------------------------------------------------------------------------
#
# Gramps Modules
#
# -------------------------------------------------------------------------

# -------------------------------------------------------------------------
#
# osmGpsMap
#
# -------------------------------------------------------------------------
from gi.repository import GObject

try:
    import gi

    gi.require_version("OsmGpsMap", "1.0")
    from gi.repository import OsmGpsMap as osmgpsmap
except:
    raise

# ------------------------------------------------------------------------
#
# Set up logging
#
# ------------------------------------------------------------------------
_LOG = logging.getLogger("maps.selectionlayer")


class SelectionLayer(GObject.GObject, osmgpsmap.MapLayer):
    """
    This class is used to select an area on the map
    """

    def __init__(self):
        """
        Initialize thz selection layer
        """
        GObject.GObject.__init__(self)
        self.circles = []
        self.rectangles = []

    def add_circle(self, rds, lat, lon):
        """
        Add a circle
        """
        self.circles.append((rds, lat, lon))

    def add_rectangle(self, cp1, cp2):
        """
        Add a rectangle
        """
        self.rectangles.append((cp1, cp2))

    def do_draw(self, gpsmap, ctx):
        """
        draw the circles and the rectangles
        """
        for circle in self.circles:
            top_left = osmgpsmap.MapPoint.new_degrees(
                circle[1] + circle[0], circle[2] - circle[0]
            )
            bottom_right = osmgpsmap.MapPoint.new_degrees(
                circle[1] - circle[0], circle[2] + circle[0]
            )
            center = osmgpsmap.MapPoint.new_degrees(circle[1], circle[2])
            crd_x, crd_y = gpsmap.convert_geographic_to_screen(top_left)
            crd_x2, crd_y2 = gpsmap.convert_geographic_to_screen(bottom_right)
            crd_xc, crd_yc = gpsmap.convert_geographic_to_screen(center)
            width = float(crd_x2 - crd_x)
            height = float(crd_y2 - crd_y)
            ctx.save()
            ctx.translate(crd_xc, crd_yc)
            ctx.set_line_width(3.0)
            ctx.set_source_rgba(0.0, 0.0, 0.0, 0.8)
            ctx.scale(1.0, (height / width))
            ctx.arc(float(0.0), float(0.0), width, 0.0, 2 * pi)
            ctx.stroke()
            ctx.restore()

        for rectangle in self.rectangles:
            top_left, bottom_right = rectangle
            ctx.set_source_rgba(0.0, 0.0, 0.0, 0.8)
            ctx.set_line_width(3.0)
            crd_x, crd_y = gpsmap.convert_geographic_to_screen(top_left)
            crd_x2, crd_y2 = gpsmap.convert_geographic_to_screen(bottom_right)
            # be sure when can select a region in all case.
            if crd_x < crd_x2:
                if crd_y < crd_y2:
                    ctx.rectangle(crd_x, crd_y, crd_x2 - crd_x, crd_y2 - crd_y)
                else:
                    ctx.rectangle(crd_x, crd_y2, crd_x2 - crd_x, crd_y - crd_y2)
            else:
                if crd_y < crd_y2:
                    ctx.rectangle(crd_x2, crd_y, crd_x - crd_x2, crd_y2 - crd_y)
                else:
                    ctx.rectangle(crd_x2, crd_y2, crd_x - crd_x2, crd_y - crd_y2)
            ctx.stroke()

    def do_render(self, gpsmap):
        """
        render the layer
        """
        pass

    def do_busy(self):
        """
        set the map busy
        """
        return False

    def do_button_press(self, gpsmap, gdkeventbutton):
        """
        Someone press a button
        """
        dummy_map = gpsmap
        dummy_evt = gdkeventbutton
        return False


GObject.type_register(SelectionLayer)
