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# 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()
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