Check tweet length
[rainbowstream.git] / rainbowstream / c_image.py
1 from PIL import Image
2 from os.path import join, dirname, getmtime, exists, expanduser
3 from .config import *
4 from .py3patch import *
5
6 import ctypes
7 import sys
8 import os
9
10
11 def call_c():
12 """
13 Call the C program for converting RGB to Ansi colors
14 """
15 library = expanduser('~/.image.so')
16 sauce = join(dirname(__file__), 'image.c')
17 if not exists(library) or getmtime(sauce) > getmtime(library):
18 build = "cc -fPIC -shared -o %s %s" % (library, sauce)
19 os.system(build + " >/dev/null 2>&1")
20 image_c = ctypes.cdll.LoadLibrary(library)
21 image_c.init()
22 return image_c.rgb_to_ansi
23
24 rgb2short = call_c()
25
26
27 def pixel_print(ansicolor):
28 """
29 Print a pixel with given Ansi color
30 """
31 sys.stdout.write('\033[48;5;%sm \033[0m' % (ansicolor))
32
33
34 def image_to_display(path, start=None, length=None):
35 """
36 Display an image
37 """
38 rows, columns = os.popen('stty size', 'r').read().split()
39 if not start:
40 start = c['IMAGE_SHIFT']
41 if not length:
42 length = int(columns) - 2 * start
43 i = Image.open(path)
44 i = i.convert('RGBA')
45 w, h = i.size
46 i.load()
47 width = min(w, length)
48 height = int(float(h) * (float(width) / float(w)))
49 height //= 2
50 i = i.resize((width, height), Image.ANTIALIAS)
51 height = min(height, c['IMAGE_MAX_HEIGHT'])
52
53 for y in xrange(height):
54 sys.stdout.write(' ' * start)
55 for x in xrange(width):
56 p = i.getpixel((x, y))
57 r, g, b = p[:3]
58 pixel_print(rgb2short(r, g, b))
59 sys.stdout.write('\n')
60
61
62 """
63 For direct using purpose
64 """
65 if __name__ == '__main__':
66 image_to_display(sys.argv[1])