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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
# -*- coding: utf-8 -*-
#Copyright (c) 2011, Walter Bender, Paulina Clares, Chris Rowe
# 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 3 of the License, or
# (at your option) any later version.
#
# You should have received a copy of the GNU General Public License
# along with this library; if not, write to the Free Software
# Foundation, 51 Franklin Street, Suite 500 Boston, MA 02110-1335 USA
from sprites import Sprite
from svg_utils import (svg_header, svg_footer, svg_rect, svg_str_to_pixbuf,
svg_wedge)
from gettext import gettext as _
BAR_HEIGHT = 25
class Bar():
''' The Bar class is used to define the bars at the bottom of the
screen '''
def __init__(self, sprites, width, height, scale, size,
colors=['#FFFFFF', '#AAAAAA']):
''' Initialize the 2-segment bar, labels, and mark '''
self.sprites = sprites
self.colors = colors[:]
self.bars = {}
self.screen_width = width
self.screen_height = height
self.scale = scale
self.ball_size = size
self.make_bar(2)
self.make_mark()
self.make_labels()
def make_mark(self):
''' Make a mark to show the fraction position on the bar. '''
mark = svg_header(self.ball_size / 2.,
BAR_HEIGHT * self.scale + 4, 1.0) + \
svg_rect(self.ball_size / 2.,
BAR_HEIGHT * self.scale + 4, 0, 0, 0, 0,
'#FF0000', '#FF0000') + \
svg_rect(1, BAR_HEIGHT * self.scale + 4, 0, 0,
self.ball_size / 4., 0, '#000000', '#000000') + \
svg_footer()
self.mark = Sprite(self.sprites, 0,
self.screen_height, # hide off bottom of screen
svg_str_to_pixbuf(mark))
self.mark.set_layer(2)
def mark_width(self):
return self.mark.rect[2]
def bar_x(self):
return self.bars[2].get_xy()[0]
def bar_y(self):
if self.bars[2].get_xy()[1] < 0:
return self.bars[2].get_xy()[1] + 1000
else:
return self.bars[2].get_xy()[1]
def width(self):
return self.bars[2].rect[2]
def height(self):
return self.bars[2].rect[3]
def show_bar(self, n):
if n in self.bars:
self.bars[n].move([self.bar_x(), self.bar_y()])
def hide_bars(self):
''' Hide all of the bars '''
for bar in self.bars:
if self.bars[bar].get_xy()[1] > 0:
self.bars[bar].move_relative([0, -1000])
def make_labels(self):
''' Label the bar '''
num = svg_header(BAR_HEIGHT * self.scale, BAR_HEIGHT * self.scale,
1.0) + \
svg_rect(BAR_HEIGHT * self.scale, BAR_HEIGHT * self.scale,
0, 0, 0, 0, 'none', 'none') + \
svg_footer()
self.left = Sprite(self.sprites, int(self.ball_size / 4),
self.bar_y(), svg_str_to_pixbuf(num))
self.left.set_label(_('0'))
self.right = Sprite(self.sprites,
self.screen_width - int(self.ball_size / 2),
self.bar_y(), svg_str_to_pixbuf(num))
self.right.set_label(_('1'))
def get_bar(self, nsegments):
''' Return a bar with n segments '''
if nsegments not in self.bars:
self.make_bar(nsegments)
return self.bars[nsegments]
def make_bar(self, nsegments):
return self.make_wedge_bar(nsegments)
def make_rect_bar(self, nsegments):
''' Create a bar with n segments '''
svg = svg_header(self.screen_width - self.ball_size, BAR_HEIGHT, 1.0)
dx = (self.screen_width - self.ball_size) / float(nsegments)
for i in range(int(nsegments) / 2):
svg += svg_rect(dx, BAR_HEIGHT * self.scale, 0, 0,
i * 2 * dx, 0, self.colors[0], self.colors[0])
svg += svg_rect(dx, BAR_HEIGHT * self.scale, 0, 0,
(i * 2 + 1) * dx, 0, self.colors[1], self.colors[1])
if int(nsegments) % 2 == 1: # odd
svg += svg_rect(dx, BAR_HEIGHT * self.scale, 0, 0,
(i * 2 + 2) * dx, 0, self.colors[0], self.colors[0])
svg += svg_footer()
self.bars[nsegments] = Sprite(self.sprites, 0, 0,
svg_str_to_pixbuf(svg))
self.bars[nsegments].move(
(int(self.ball_size / 2), self.screen_height - \
int((self.ball_size + self.height()) / 2)))
def make_wedge_bar(self, nsegments):
''' Create a wedged-shaped bar with n segments '''
svg = svg_header(self.screen_width - self.ball_size, BAR_HEIGHT, 1.0)
dx = (self.screen_width - self.ball_size) / float(nsegments)
dy = BAR_HEIGHT * self.scale / float(nsegments)
print 'nsegments', nsegments
for i in range(int(nsegments) / 2):
print i, i * 2 * dy, (i * 2 + 1) * dy,
svg += svg_wedge(dx, BAR_HEIGHT * self.scale,
i * 2 * dx,
i * 2 * dy, (i * 2 + 1) * dy,
self.colors[0], self.colors[0])
svg += svg_wedge(dx, BAR_HEIGHT * self.scale,
(i * 2 + 1) * dx,
(i * 2 + 1) * dy, (i * 2 + 2) * dy,
self.colors[1], self.colors[1])
if int(nsegments) % 2 == 1: # odd
svg += svg_wedge(dx, BAR_HEIGHT * self.scale,
(i * 2 + 2) * dx,
(i * 2 + 2) * dy, BAR_HEIGHT * self.scale,
self.colors[0], self.colors[0])
svg += svg_footer()
self.bars[nsegments] = Sprite(self.sprites, 0, 0,
svg_str_to_pixbuf(svg))
self.bars[nsegments].move(
(int(self.ball_size / 2), self.screen_height - \
int((self.ball_size + self.height()) / 2)))
|
