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
|
# Copyright (C) 2008 Jimmy Do <jimmydo@users.sourceforge.net>
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import math
import gobject
import gtk
class PieMeter(gtk.Image):
_DEFAULT_SIZE = 24
def __init__(self):
gtk.Image.__init__(self)
self._progress = 0.0
self._fill_color = (0.0, 1.0, 0.0)
def set_progress(self, progress):
assert progress >= 0.0
assert progress <= 1.0
self._progress = progress
if self.window is not None:
self.window.invalidate_rect(self.allocation, True)
def set_fill_color(self, red, green, blue):
assert 0.0 <= red <= 1.0
assert 0.0 <= green <= 1.0
assert 0.0 <= blue <= 1.0
self._fill_color = (red, green, blue)
if self.window is not None:
self.window.invalidate_rect(self.allocation, True)
def do_size_request(self, requisition):
requisition.width = PieMeter._DEFAULT_SIZE
requisition.height = PieMeter._DEFAULT_SIZE
def do_expose_event(self, event):
context = event.window.cairo_create()
rect = self.allocation
x = rect.x + (rect.width / 2)
y = rect.y + (rect.height / 2)
radius = (min(rect.width, rect.height) / 2)
# Draw background circle
context.arc(x, y, radius, 0, 2 * math.pi)
context.set_source_rgba(0.8, 0.8, 0.8)
context.fill()
# Draw pie
context.arc(x, y, radius, (-0.5 * math.pi) + self._progress * 2 * math.pi, 1.5 * math.pi)
context.line_to(x, y)
context.close_path()
(red, green, blue) = self._fill_color
context.set_source_rgb(red, green, blue)
context.fill()
# Draw circle outline
context.arc(x, y, radius, 0, 2 * math.pi)
context.set_source_rgba(1, 1, 1)
context.set_line_width(1.0)
context.stroke()
gobject.type_register(PieMeter)
|
