86 lines
2.2 KiB
Python
86 lines
2.2 KiB
Python
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#!/usr/bin/env python3
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import math
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import PIL
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from PIL import Image
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def line(w, h=1):
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out = [0x1d, 0x76, 0x30, 0x00]
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out += [math.ceil(w/8), (w//8)//256]
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out += [h%256, h//256]
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print(w,h,out)
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data = [0xFF]*(w//8)
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last = 0
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for i in range(w%8):
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last += 2**(7-i)
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if last != 0:
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data.append(last)
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print(len(data))
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for i in range(h):
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out += data
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print(len(out))
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return bytes(out)
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def size_for_printer(w,h):
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return [math.ceil(w/8), (w//8)//256, h%256, h//256]
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def print_image(filename):
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img = Image.open(filename)
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w, h = img.size
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needs_resize = False
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if w>576:
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f = 576/w
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nw = int(w*f)
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nh = int(h*f)
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needs_resize=True
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img = img.convert("1")
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if needs_resize:
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img = img.resize((nw, nh), PIL.Image.NEAREST)
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data = [0x1d, 0x76, 0x30, 0x00] + size_for_printer(*img.size)
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for y in range(img.height):
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current_byte = 0
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current_bit = 0
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for x in range(img.width):
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l = img.getpixel((x, y))
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to_add = 1<<(7-current_bit)
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current_byte += to_add if l<127 else 0
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current_bit += 1
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if current_bit>7:
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data.append(current_byte)
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current_bit = 0
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current_byte = 0
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if current_bit != 0:
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data.append(current_byte)
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return bytes(data)
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def main():
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with open("/dev/usb/lp1", "wb") as lp:
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lp.write(bytes([0x1b, 0x40]))
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lp.write(bytes([0x1b, 0x74, 0x06]))
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lp.write(" 0123456789ABCDEF0123456789ABCDEF".encode("latin-1"))
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lp.write(bytes([13,10]))
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for offs in range(7):
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lp.write((hex(2+2*offs)[-1]+" ").encode("latin-1"))
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for c in range(32):
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lp.write(bytes([(1+offs)*0x20+c]))
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lp.write(bytes([13,10]))
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#lp.write("Hier kommt ein ".encode("latin-1"))
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#lp.write(print_image("inline.bmp"))
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#lp.write("-Emoji".encode("latin-1"))
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#lp.write(bytes([0x0d, 0x0a]))
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#lp.write(print_image("test6.bmp"))
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#lp.write(bytes([0x0d, 0x0a]))
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lp.write(bytes([0x1d, 0x56, 0x42, 25]))
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lp.flush();
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if __name__ == "__main__":
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main()
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