1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
# 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/>.
DEBUG = False
from objectarea import Object
from draggableobject import DraggableObject
from vector import Vector
import gtk
class LineSegmentObject(DraggableObject):
"""Draggable vertical line segment."""
def __init__(self, pos, length, drop_targets, container):
DraggableObject.__init__(self)
self.pos = pos
self.length = length
if self.length == 200:
self.line_segment_length = 162
else:
self.line_segment_length = self.length
self.selectable = True
self.rotatable = False
self.drop_target = None
self.drop_targets = drop_targets
self.container = container
def draw(self, cr):
#cr.set_source_rgb(1, 0, 1)
#self_bounds_mn, self_bounds_mx = self.get_bounds()
#cr.rectangle(self_bounds_mn.x, self_bounds_mn.y, self_bounds_mx.x - self_bounds_mn.x, self_bounds_mx.y - self_bounds_mn.y)
#cr.fill()
cr.move_to(self.pos.x - 25, self.pos.y + self.length - self.line_segment_length)
cr.line_to(self.pos.x + 25, self.pos.y+ self.length - self.line_segment_length)
cr.move_to(self.pos.x - 25, self.pos.y + self.length)
cr.line_to(self.pos.x + 25, self.pos.y + self.length)
cr.move_to(self.pos.x, self.pos.y + self.length - self.line_segment_length)
cr.line_to(self.pos.x, self.pos.y + self.length)
if self.dragged:
# The line segment gets transparent when dragged.
cr.set_source_rgba(0, 0, 0, 0.5)
else:
# Otherwise, it's black.
cr.set_source_rgb(0, 0, 0)
cr.set_line_width(8.0)
cr.stroke()
if self.selected:
cr.rectangle(self.pos.x - 30, self.pos.y - 10 + self.length - self.line_segment_length, 60, self.line_segment_length + 20)
cr.set_line_width(1.0)
# Draw a different dashed outline if the object is not only selected but dragged.
if self.dragged or self.moving_by_key_press:
cr.set_dash((2, 2, 0))
else:
cr.set_dash((10, 10), 0)
cr.set_source_rgb(0, 0, 0)
cr.stroke()
def get_bounds(self):
mn = Vector(self.pos.x - 30, self.pos.y - 10 + self.length - self.line_segment_length)
mx = mn + Vector(60, self.line_segment_length + 20)
return mn, mx
|