-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathtexttocanvas.py
139 lines (118 loc) · 3.41 KB
/
texttocanvas.py
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
from __future__ import print_function
import string
from PIL import Image
from PIL import ImageFont
from PIL import ImageDraw
import sys
import numpy
import rivaloled
import time
MAXX, MAXY = 36, 128
timeout = 60000
def char_to_pixels(text, path, fontsize):
"""
Based on https://stackoverflow.com/a/27753869/190597 (jsheperd)
"""
font = ImageFont.truetype(path, fontsize)
w, h = font.getsize(text)
h *= 2
image = Image.new('L', (w, h), 1)
draw = ImageDraw.Draw(image)
draw.text((0, 0), text, font=font)
arr = numpy.asarray(image)
arr = numpy.where(arr, 0, 1)
arr = arr[(arr != 0).any(axis=1)]
return arr
def imagetoarray(filename):
filename="cpu.png"
im = Image.open(filename, "r")
array = rivaloled.imagetobits(im)
return array
def stitcharray(a, b, axis):
return numpy.concatenate((a, b), axis=axis, out=None)
def padarray(arr, xsize, ysize):
x, y = arr.shape
print("grow array", x, y, xsize, ysize)
ypadt = 0
ypadb = 0
xpadt = 0
xpadb = 0
if y < ysize:
ypad = (ysize-y)/2
print("y, ysize ",y, ysize)
if (ypad % 2) == 0:
ypadt = int(ypad)
ypadb = int(ypad)
else:
ypadt = int(ypad + 1)
ypadb = int(ypad - 0.5)
if x < xsize:
print("x, xsize ",x, xsize)
xpad = (xsize-x)/2
if (xpad % 2) == 0:
xpadt = int(xpad)
xpadb = int(xpad)
else:
xpadt = int(xpad + 1)
xpadb = int(xpad - 0.5)
print(xpadt, xpadb, ypadt, ypadb)
arr = numpy.pad(arr, ((xpadt, xpadb) , (ypadt, ypadb)), mode = 'constant', constant_values=(0, 0))
return arr
def texttoarray(argv, fontsize):
print("argv", argv)
for c in argv:
arr = char_to_pixels(
c,
#path='/usr/share/fonts/truetype/liberation/LiberationSerif-Bold.ttf',
#path='/home/nixtux/.local/share/fonts/adip1.ttf',
path='/home/nixtux/.local/share/fonts/YummyCupcakes.ttf',
fontsize=fontsize)
return arr
def showmessage(array):
x, y = array.shape
print(array.shape)
if y == 128:
rivaloled.sendframe(array, timeout)
else:
seq = []
position = 1
flip = 1
x, y = array.shape
l = y * 2
for index in range(l):
frame = array[0:, position:position+MAXY]
seq.append(frame)
position = position + flip
if position == y-MAXY:
flip = -1
if position == 1:
flip = 1
frames = numpy.dstack(seq)
rivaloled.sendsquenece(frames, timeout)
def texttooled(text, fontsize):
message = texttoarray(text, fontsize)
x, y = message.shape
if y > 128:
message = padarray(message, 36, y)
else:
message = padarray(message, 36, 128)
showmessage(message)
def main(argv):
icon = imagetoarray("hdehe")
x, y = icon.shape
icon = padarray(icon, 36, y)
message = texttoarray(argv, 38)
x, y = message.shape
message = padarray(message, 36, y)
x, y = message.shape
message = stitcharray(icon, message, 1)
x, y = message.shape
x, y = message.shape
if y > 128:
message = padarray(message, 36, y)
else:
message = padarray(message, 36, 128)
x, y = message.shape
showmessage(message)
if __name__ == "__main__":
main(sys.argv[1:])