# Copyright 2008 by Peter Moxhay and Wade Brainerd.  
# This file is part of Math.
#
# Math 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 3 of the License, or
# (at your option) any later version.
# 
# Math 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 Math.  If not, see <http://www.gnu.org/licenses/>.
from objectarea import Object
from vector import Vector

import gtk
from droporiginobject import DropOriginObject
from linesegmentobject import LineSegmentObject

class LineSegmentOriginObject(DropOriginObject):
    """Rectangular area that is a source of draggable line segments."""

    def __init__(self, pos, container, drop_targets):
        DropOriginObject.__init__(self, pos,  Vector(80, 320), container)
        
        self.drop_targets = drop_targets
        
        #print "LineSegmentOriginObject: creating LineSegmentObject 1 with len(self.drop_targets) = ",len(self.drop_targets)
        self.line1 = LineSegmentObject(Vector(40, 10), 100, self.drop_targets, self.container)
        self.line1.drop_origin = self
        
        #print "LineSegmentOriginObject: creating LineSegmentObject 2 with len(self.drop_targets) = ",len(self.drop_targets)
        self.line2 = LineSegmentObject(Vector(40, 110), 200, self.drop_targets, self.container)
        self.line2.drop_origin = self
        
        self.line1.drag_type = None
        self.line1.selected = False
        self.line1.selectable = True
        self.line1.dragged = False
        self.line1.draggable = True

        self.line2.drag_type = None
        self.line2.selected = False
        self.line2.selectable = True
        self.line2.dragged = False
        self.line2.draggable = True
        
        self.add_object(self.line1)
        self.add_object(self.line2)
        
        self.background_visible = True
        
    def reset(self):
        self.line1.move(self.pos + Vector(40, 10))
        self.line2.move(self.pos + Vector(40, 110))
        
        self.line1.drag_type = None
        self.line1.selectable = True
        self.line1.dragged = False
        self.line1.draggable = True
        self.line1.moving_by_key_press = False

        self.line2.drag_type = None
        self.line2.selectable = True
        self.line2.dragged = False
        self.line2.draggable = True
        self.line2.moving_by_key_press = False
        
        # Adjust tabbing order.
        if self.container:
            #self.container.select_object(self.line1)
            self.container.adjust_tab_order()
        
    #def adjust_tab_order(self):
    #    if self.container:
    #        self.container.remove_object(self.line1)
    #        self.container.remove_object(self.line2)
    #        self.container.add_object(self.line1)
    #        self.container.add_object(self.line2)
    #        
    def remove_contents(self): 
        self.line1.drag_type = None
        self.line1.selected = False
        self.line1.selectable = False
        self.line1.dragged = False
        self.line1.draggable = False

        self.line2.drag_type = None
        self.line2.selected = False
        self.line2.selectable = False
        self.line2.dragged = False
        self.line2.draggable = False
        
        self.line1.move(Vector(10000, 10000))
        self.line2.move(Vector(10000, 10000))
        
        self.remove_object(self.line1)
        self.remove_object(self.line2)
        
    def get_bounds(self):
        return self.pos, self.pos + self.size
    
    def select_primary_object(self):
        #print "SELECT PRIMARY OBJECT!"
        self.container.select_object(self.line1)
        
    def draw_background(self, cr):
        if not self.background_visible:
            return
        
        shift_x = -500
        shift_y = 250
        
        if self.container.problem_type == 'amount':
            self.pos1 = Vector (950 + shift_x, 150 + shift_y)
            self.pos2 = Vector (950 + shift_x, 250 + shift_y)
        else:
            self.pos1 = Vector (950, 150)
            self.pos2 = Vector (950, 250)

        self.length = 100
        self.line_segment_length = 100
        
        cr.set_source_rgb(0, 0, 0)

        cr.move_to(self.pos1.x - 25, self.pos1.y + self.length - self.line_segment_length)
        cr.line_to(self.pos1.x + 25, self.pos1.y + self.length - self.line_segment_length)

        cr.move_to(self.pos1.x - 25, self.pos1.y + self.length)
        cr.line_to(self.pos1.x + 25, self.pos1.y + self.length)

        cr.move_to(self.pos1.x, self.pos1.y + self.length - self.line_segment_length)
        cr.line_to(self.pos1.x, self.pos1.y + self.length)

        cr.set_line_width(8.0)  
        cr.stroke()

        self.length = 200
        self.line_segment_length = 162

        cr.move_to(self.pos2.x - 25, self.pos2.y + self.length - self.line_segment_length)
        cr.line_to(self.pos2.x + 25, self.pos2.y + self.length - self.line_segment_length)

        cr.move_to(self.pos2.x - 25, self.pos2.y + self.length)
        cr.line_to(self.pos2.x + 25, self.pos2.y + self.length)

        cr.move_to(self.pos2.x, self.pos2.y + self.length - self.line_segment_length)
        cr.line_to(self.pos2.x, self.pos2.y + self.length)

        cr.set_line_width(8.0)  
        cr.stroke()