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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
class DropTargetObject(Object):
"""Rectangular area into which other objects can be dropped."""
def __init__(self, pos, size, container):
Object.__init__(self)
self.pos = pos
self.size = size
self.draggable = False
self.selectable = False
self.hilite = False
self.contents = None
self.drop_origin = None
self.drop_targets = None
self.full = False
self.shape1 = None
self.shape2 = None
self.objects = []
self.container = container
def draw(self, cr):
cr.rectangle(self.pos.x, self.pos.y, self.size.x, self.size.y)
cr.set_source_rgb(0, 0, 0)
cr.set_line_width(4.0)
if self.hilite:
cr.set_dash((10, 10), 0)
cr.stroke()
def add_object(self, obj):
obj.container = self.container
obj.pos += self.pos
self.objects.append(obj)
self.container.add_object(obj)
def remove_object(self, obj):
# Ignore failure to remove when an object has already been removed.
try:
self.objects.remove(obj)
except:
pass
if self.container:
self.container.remove_object(obj)
def processDrop(self, draggable_object):
pass
def get_bounds(self):
return self.pos, self.pos + self.size
def contains(self, other_bounds):
self_bounds_mn, self_bounds_mx = self.get_bounds()
other_bounds_mn, other_bounds_mx = other_bounds
if other_bounds_mn.x > self_bounds_mn.x \
and other_bounds_mx.x < self_bounds_mx.x \
and other_bounds_mn.y > self_bounds_mn.y \
and other_bounds_mx.y < self_bounds_mx.y :
return True
else:
return False
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