Merge branch 'master' of github.com:braveheuel/python-escpos into development
This commit is contained in:
Patrick Kanzler
commit
6cc325b395
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@ -1,10 +1,9 @@
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# python temporary files
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syntax: glob
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*.pyc
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# editor autosaves
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$~
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.idea/
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# temporary data
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syntax: regexp
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temp
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|
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@ -42,7 +42,7 @@ CHARCODE_PC865 = '\x1b\x74\x05' # Nordic
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CHARCODE_WEU = '\x1b\x74\x06' # Simplified Kanji, Hirakana
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CHARCODE_GREEK = '\x1b\x74\x07' # Simplified Kanji
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CHARCODE_HEBREW = '\x1b\x74\x08' # Simplified Kanji
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CHARCODE_PC1252 = '\x1b\x74\x10' # Western European Windows Code Set
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CHARCODE_PC1252 = '\x1b\x74\x11' # Western European Windows Code Set
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CHARCODE_PC866 = '\x1b\x74\x12' # Cirillic #2
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CHARCODE_PC852 = '\x1b\x74\x13' # Latin 2
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CHARCODE_PC858 = '\x1b\x74\x14' # Euro
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|
|
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206
escpos/escpos.py
206
escpos/escpos.py
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@ -13,51 +13,83 @@ except ImportError:
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import qrcode
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import time
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import textwrap
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import binascii
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from constants import *
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from exceptions import *
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from .constants import *
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from .exceptions import *
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class Escpos:
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from abc import ABCMeta, abstractmethod # abstract base class support
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class Escpos(object):
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""" ESC/POS Printer object """
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__metaclass__ = ABCMeta
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device = None
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def _check_image_size(self, size):
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""" Check and fix the size of the image to 32 bits """
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def __init__(self, columns=32):
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""" Initialize ESCPOS Printer
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:param columns: Text columns used by the printer. Defaults to 32."""
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self.columns = columns
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@abstractmethod
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def _raw(self, msg):
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""" Sends raw data to the printer
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This function has to be individually implemented by the implementations.
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:param msg: message string to be sent to the printer
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"""
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pass
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@staticmethod
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def _check_image_size(size):
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""" Check and fix the size of the image to 32 bits
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:param size: size of the image
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:returns: tuple of image borders
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:rtype: (int, int)
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"""
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if size % 32 == 0:
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return (0, 0)
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return 0, 0
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else:
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image_border = 32 - (size % 32)
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if (image_border % 2) == 0:
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return (image_border / 2, image_border / 2)
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return (round(image_border / 2), round(image_border / 2))
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else:
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return (image_border / 2, (image_border / 2) + 1)
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return (round(image_border / 2), round((image_border / 2) + 1))
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def _print_image(self, line, size):
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""" Print formatted image """
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""" Print formatted image
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:param line:
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:param size:
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"""
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i = 0
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cont = 0
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buffer = ""
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pbuffer = ""
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self._raw(S_RASTER_N)
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buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1]&0xff, size[1]>>8)
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self._raw(buffer.decode('hex'))
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buffer = ""
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pbuffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1] & 0xff, size[1] >> 8)
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self._raw(binascii.unhexlify(pbuffer))
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pbuffer = ""
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|
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while i < len(line):
|
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hex_string = int(line[i:i+8], 2)
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buffer += "%02X" % hex_string
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pbuffer += "%02X" % hex_string
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i += 8
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cont += 1
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if cont % 4 == 0:
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self._raw(buffer.decode("hex"))
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buffer = ""
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self._raw(binascii.unhexlify(pbuffer))
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pbuffer = ""
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cont = 0
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def _convert_image(self, im):
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""" Parse image and prepare it to a printable format """
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""" Parse image and prepare it to a printable format
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:param im: image data
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:raises: ImageSizeError
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"""
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pixels = []
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pix_line = ""
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im_left = ""
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@ -65,7 +97,6 @@ class Escpos:
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switch = 0
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img_size = [0, 0]
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if im.size[0] > 512:
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print ("WARNING: Image is wider than 512 and could be truncated at print time ")
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if im.size[1] > 0xffff:
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|
|
@ -95,7 +126,7 @@ class Escpos:
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else:
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pix_line += im_pattern[x]
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break
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elif im_color > (255 * 3 / pattern_len * pattern_len) and im_color <= (255 * 3):
|
||||
elif (255 * 3 / pattern_len * pattern_len) < im_color <= (255 * 3):
|
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pix_line += im_pattern[-1]
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break
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pix_line += im_right
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@ -103,9 +134,11 @@ class Escpos:
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self._print_image(pix_line, img_size)
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def image(self, path_img):
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""" Open image file """
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""" Open image file
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:param path_img: path to image
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"""
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im_open = Image.open(path_img)
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# Remove the alpha channel on transparent images
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@ -119,9 +152,44 @@ class Escpos:
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# Convert the RGB image in printable image
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self._convert_image(im)
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def direct_image(self, image):
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""" Send image to printer"""
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mask = 0x80
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i = 0
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temp = 0
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(width, height) = image.size
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self._raw(S_RASTER_N)
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headerX = int(width / 8)
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headerY = height
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buf = "%02X" % (headerX & 0xff)
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buf += "%02X" % ((headerX >> 8) & 0xff)
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buf += "%02X" % (headerY & 0xff)
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buf += "%02X" % ((headerY >> 8) & 0xff)
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#self._raw(binascii.unhexlify(buf))
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for y in range(height):
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for x in range(width):
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value = image.getpixel((x,y))
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value = (value << 8) | value;
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if value == 0:
|
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temp |= mask
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|
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mask = mask >> 1
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i += 1
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if i == 8:
|
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buf += ("%02X" % temp)
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mask = 0x80
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i = 0
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temp = 0
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self._raw(binascii.unhexlify(bytes(buf, "ascii")))
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self._raw('\n')
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def qr(self, text):
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""" Print QR Code for the provided string """
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""" Print QR Code for the provided string
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:param text: text to generate a QR-Code from
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"""
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qr_code = qrcode.QRCode(version=4, box_size=4, border=1)
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qr_code.add_data(text)
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qr_code.make(fit=True)
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|
|
@ -131,9 +199,14 @@ class Escpos:
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# Convert the RGB image in printable image
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self._convert_image(im)
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def charcode(self, code):
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""" Set Character Code Table """
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""" Set Character Code Table
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Sends the control sequence from constants.py to the printer with :py:meth:`escpos.printer._raw()`.
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:param code: Name of CharCode
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:raises: CharCodeError
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"""
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if code.upper() == "USA":
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self._raw(CHARCODE_PC437)
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elif code.upper() == "JIS":
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|
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@ -152,8 +225,8 @@ class Escpos:
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self._raw(CHARCODE_GREEK)
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elif code.upper() == "HEBREW":
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self._raw(CHARCODE_HEBREW)
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elif code.upper() == "LATVIAN":
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self._raw(CHARCODE_PC755)
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# elif code.upper() == "LATVIAN": # this is not listed in the constants
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# self._raw(CHARCODE_PC755)
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elif code.upper() == "WPC1252":
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self._raw(CHARCODE_PC1252)
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elif code.upper() == "CIRILLIC2":
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|
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@ -180,7 +253,16 @@ class Escpos:
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raise CharCodeError()
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def barcode(self, code, bc, width, height, pos, font):
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""" Print Barcode """
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""" Print Barcode
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:param code: data for barcode
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:param bc: barcode format, see constants.py
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:param width: barcode width, has to be between 1 and 255
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:param height: barcode height, has to be between 2 and 6
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:param pos: position of text in barcode, default when nothing supplied is below
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:param font: select font, default is font A
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:raises: BarcodeSizeError, BarcodeTypeError, BarcodeCodeError
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"""
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# Align Bar Code()
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self._raw(TXT_ALIGN_CT)
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# Height
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@ -228,19 +310,35 @@ class Escpos:
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if code:
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self._raw(code)
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else:
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raise exception.BarcodeCodeError()
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raise BarcodeCodeError()
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def text(self, txt):
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""" Print alpha-numeric text """
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""" Print alpha-numeric text
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The text has to be encoded in the currently selected codepage.
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:param txt: text to be printed
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:raises: TextError
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"""
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if txt:
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self._raw(txt)
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else:
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raise TextError()
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def block_text(self, txt, columns=None):
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'''Text is printed wrapped to specified columns'''
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colCount = self.columns if columns == None else columns
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self.text(textwrap.fill(txt, colCount))
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def set(self, align='left', font='a', type='normal', width=1, height=1, density=9):
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""" Set text properties """
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def set(self, align='left', font='a', text_type='normal', width=1, height=1, density=9):
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""" Set text properties by sending them to the printer
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:param align: alignment of text
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:param font: font A or B
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:param text_type: add bold or underlined
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||||
:param width: text width, normal or double width
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:param height: text height, normal or double height
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:param density: print density
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"""
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# Width
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if height == 2 and width == 2:
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self._raw(TXT_NORMAL)
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|
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@ -254,22 +352,22 @@ class Escpos:
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|||
else: # DEFAULT SIZE: NORMAL
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self._raw(TXT_NORMAL)
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# Type
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if type.upper() == "B":
|
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if text_type.upper() == "B":
|
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self._raw(TXT_BOLD_ON)
|
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self._raw(TXT_UNDERL_OFF)
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elif type.upper() == "U":
|
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elif text_type.upper() == "U":
|
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self._raw(TXT_BOLD_OFF)
|
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self._raw(TXT_UNDERL_ON)
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||||
elif type.upper() == "U2":
|
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elif text_type.upper() == "U2":
|
||||
self._raw(TXT_BOLD_OFF)
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||||
self._raw(TXT_UNDERL2_ON)
|
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elif type.upper() == "BU":
|
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elif text_type.upper() == "BU":
|
||||
self._raw(TXT_BOLD_ON)
|
||||
self._raw(TXT_UNDERL_ON)
|
||||
elif type.upper() == "BU2":
|
||||
elif text_type.upper() == "BU2":
|
||||
self._raw(TXT_BOLD_ON)
|
||||
self._raw(TXT_UNDERL2_ON)
|
||||
elif type.upper == "NORMAL":
|
||||
elif text_type.upper == "NORMAL":
|
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self._raw(TXT_BOLD_OFF)
|
||||
self._raw(TXT_UNDERL_OFF)
|
||||
# Font
|
||||
|
|
@ -306,9 +404,11 @@ class Escpos:
|
|||
else: # DEFAULT: DOES NOTHING
|
||||
pass
|
||||
|
||||
|
||||
def cut(self, mode=''):
|
||||
""" Cut paper """
|
||||
""" Cut paper
|
||||
|
||||
:param mode: set to 'PART' for a partial cut
|
||||
"""
|
||||
# Fix the size between last line and cut
|
||||
# TODO: handle this with a line feed
|
||||
self._raw("\n\n\n\n\n\n")
|
||||
|
|
@ -317,9 +417,13 @@ class Escpos:
|
|||
else: # DEFAULT MODE: FULL CUT
|
||||
self._raw(PAPER_FULL_CUT)
|
||||
|
||||
|
||||
def cashdraw(self, pin):
|
||||
""" Send pulse to kick the cash drawer """
|
||||
""" Send pulse to kick the cash drawer
|
||||
|
||||
Kick cash drawer on pin 2 or pin 5.
|
||||
:param pin: pin number
|
||||
:raises: CashDrawerError
|
||||
"""
|
||||
if pin == 2:
|
||||
self._raw(CD_KICK_2)
|
||||
elif pin == 5:
|
||||
|
|
@ -327,9 +431,11 @@ class Escpos:
|
|||
else:
|
||||
raise CashDrawerError()
|
||||
|
||||
|
||||
def hw(self, hw):
|
||||
""" Hardware operations """
|
||||
""" Hardware operations
|
||||
|
||||
:param hw: hardware action
|
||||
"""
|
||||
if hw.upper() == "INIT":
|
||||
self._raw(HW_INIT)
|
||||
elif hw.upper() == "SELECT":
|
||||
|
|
@ -339,12 +445,14 @@ class Escpos:
|
|||
else: # DEFAULT: DOES NOTHING
|
||||
pass
|
||||
|
||||
|
||||
def control(self, ctl, pos=4):
|
||||
""" Feed control sequences """
|
||||
""" Feed control sequences
|
||||
|
||||
:raises: TabPosError
|
||||
"""
|
||||
# Set tab positions
|
||||
if pos < 1 or pos > 16:
|
||||
raise TabError()
|
||||
raise TabPosError()
|
||||
else:
|
||||
self._raw("".join([CTL_SET_HT, hex(pos)]))
|
||||
# Set position
|
||||
|
|
|
|||
|
|
@ -1,6 +1,5 @@
|
|||
""" ESC/POS Exceptions classes """
|
||||
|
||||
import os
|
||||
|
||||
class Error(Exception):
|
||||
""" Base class for ESC/POS errors """
|
||||
|
|
@ -27,6 +26,7 @@ class Error(Exception):
|
|||
|
||||
|
||||
class BarcodeTypeError(Error):
|
||||
"""No Barcode type defined """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
|
|
@ -35,7 +35,9 @@ class BarcodeTypeError(Error):
|
|||
def __str__(self):
|
||||
return "No Barcode type is defined"
|
||||
|
||||
|
||||
class BarcodeSizeError(Error):
|
||||
""" Barcode size is out of range """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
|
|
@ -44,16 +46,20 @@ class BarcodeSizeError(Error):
|
|||
def __str__(self):
|
||||
return "Barcode size is out of range"
|
||||
|
||||
|
||||
class BarcodeCodeError(Error):
|
||||
""" No Barcode code was supplied """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
self.resultcode = 30
|
||||
|
||||
def __str__(self):
|
||||
return "Code was not supplied"
|
||||
return "No Barcode code was supplied"
|
||||
|
||||
|
||||
class ImageSizeError(Error):
|
||||
""" Image height is longer than 255px and can't be printed """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
|
|
@ -62,7 +68,9 @@ class ImageSizeError(Error):
|
|||
def __str__(self):
|
||||
return "Image height is longer than 255px and can't be printed"
|
||||
|
||||
|
||||
class TextError(Error):
|
||||
""" Test sting must be supplied to the text() method """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
|
|
@ -73,6 +81,7 @@ class TextError(Error):
|
|||
|
||||
|
||||
class CashDrawerError(Error):
|
||||
""" Valid pin must be set to send pulse """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
|
|
@ -82,7 +91,8 @@ class CashDrawerError(Error):
|
|||
return "Valid pin must be set to send pulse"
|
||||
|
||||
|
||||
class TabError(Error):
|
||||
class TabPosError(Error):
|
||||
""" Valid tab positions must be in the range 0 to 16 """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
|
|
@ -93,6 +103,7 @@ class TabError(Error):
|
|||
|
||||
|
||||
class CharCodeError(Error):
|
||||
""" Valid char code must be set """
|
||||
def __init__(self, msg=""):
|
||||
Error.__init__(self, msg)
|
||||
self.msg = msg
|
||||
|
|
|
|||
|
|
@ -11,21 +11,23 @@ import usb.util
|
|||
import serial
|
||||
import socket
|
||||
|
||||
from escpos import *
|
||||
from constants import *
|
||||
from exceptions import *
|
||||
from .escpos import *
|
||||
from .constants import *
|
||||
from .exceptions import *
|
||||
|
||||
|
||||
class Usb(Escpos):
|
||||
""" Define USB printer """
|
||||
|
||||
def __init__(self, idVendor, idProduct, interface=0, in_ep=0x82, out_ep=0x01):
|
||||
def __init__(self, idVendor, idProduct, interface=0, in_ep=0x82, out_ep=0x01, *args, **kwargs):
|
||||
"""
|
||||
@param idVendor : Vendor ID
|
||||
@param idProduct : Product ID
|
||||
@param interface : USB device interface
|
||||
@param in_ep : Input end point
|
||||
@param out_ep : Output end point
|
||||
:param idVendor: Vendor ID
|
||||
:param idProduct: Product ID
|
||||
:param interface: USB device interface
|
||||
:param in_ep: Input end point
|
||||
:param out_ep: Output end point
|
||||
"""
|
||||
Escpos.__init__(self, *args, **kwargs)
|
||||
self.idVendor = idVendor
|
||||
self.idProduct = idProduct
|
||||
self.interface = interface
|
||||
|
|
@ -33,12 +35,11 @@ class Usb(Escpos):
|
|||
self.out_ep = out_ep
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Search device on USB tree and set is as escpos device """
|
||||
""" Search device on USB tree and set it as escpos device """
|
||||
self.device = usb.core.find(idVendor=self.idVendor, idProduct=self.idProduct)
|
||||
if self.device is None:
|
||||
print "Cable isn't plugged in"
|
||||
print("Cable isn't plugged in")
|
||||
|
||||
check_driver = None
|
||||
|
||||
|
|
@ -52,20 +53,18 @@ class Usb(Escpos):
|
|||
self.device.detach_kernel_driver(0)
|
||||
except usb.core.USBError as e:
|
||||
if check_driver is not None:
|
||||
print "Could not detatch kernel driver: %s" % str(e)
|
||||
print("Could not detatch kernel driver: %s" % str(e))
|
||||
|
||||
try:
|
||||
self.device.set_configuration()
|
||||
self.device.reset()
|
||||
except usb.core.USBError as e:
|
||||
print "Could not set configuration: %s" % str(e)
|
||||
|
||||
print("Could not set configuration: %s" % str(e))
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
self.device.write(self.out_ep, msg, self.interface)
|
||||
|
||||
|
||||
def __del__(self):
|
||||
""" Release USB interface """
|
||||
if self.device:
|
||||
|
|
@ -73,13 +72,12 @@ class Usb(Escpos):
|
|||
self.device = None
|
||||
|
||||
|
||||
|
||||
class Serial(Escpos):
|
||||
""" Define Serial printer """
|
||||
|
||||
def __init__(self, devfile="/dev/ttyS0", baudrate=9600, bytesize=8, timeout=1,
|
||||
parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE,
|
||||
xonxoff=False , dsrdtr=True):
|
||||
xonxoff=False , dsrdtr=True, *args, **kwargs):
|
||||
"""
|
||||
@param devfile : Device file under dev filesystem
|
||||
@param baudrate : Baud rate for serial transmission
|
||||
|
|
@ -91,11 +89,11 @@ class Serial(Escpos):
|
|||
@param xonxoff : Software flow control
|
||||
@param dsrdtr : Hardware flow control (False to enable RTS/CTS)
|
||||
"""
|
||||
Escpos.__init__(self, *args, **kwargs)
|
||||
self.devfile = devfile
|
||||
self.baudrate = baudrate
|
||||
self.bytesize = bytesize
|
||||
self.timeout = timeout
|
||||
|
||||
self.parity = parity
|
||||
self.stopbits = stopbits
|
||||
self.xonxoff = xonxoff
|
||||
|
|
@ -103,7 +101,6 @@ class Serial(Escpos):
|
|||
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Setup serial port and set is as escpos device """
|
||||
self.device = serial.Serial(port=self.devfile, baudrate=self.baudrate,
|
||||
|
|
@ -112,80 +109,79 @@ class Serial(Escpos):
|
|||
xonxoff=self.xonxoff, dsrdtr=self.dsrdtr)
|
||||
|
||||
if self.device is not None:
|
||||
print "Serial printer enabled"
|
||||
print("Serial printer enabled")
|
||||
else:
|
||||
print "Unable to open serial printer on: %s" % self.devfile
|
||||
|
||||
print("Unable to open serial printer on: %s" % self.devfile)
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
self.device.write(msg)
|
||||
|
||||
|
||||
def __del__(self):
|
||||
""" Close Serial interface """
|
||||
if self.device is not None:
|
||||
self.device.close()
|
||||
|
||||
|
||||
|
||||
class Network(Escpos):
|
||||
""" Define Network printer """
|
||||
|
||||
def __init__(self,host,port=9100):
|
||||
def __init__(self,host,port=9100, *args, **kwargs):
|
||||
"""
|
||||
@param host : Printer's hostname or IP address
|
||||
@param port : Port to write to
|
||||
"""
|
||||
Escpos.__init__(self, *args, **kwargs)
|
||||
self.host = host
|
||||
self.port = port
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Open TCP socket and set it as escpos device """
|
||||
self.device = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
||||
self.device.connect((self.host, self.port))
|
||||
|
||||
if self.device is None:
|
||||
print "Could not open socket for %s" % self.host
|
||||
|
||||
print("Could not open socket for %s" % self.host)
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
self.device.send(msg)
|
||||
|
||||
|
||||
def __del__(self):
|
||||
""" Close TCP connection """
|
||||
self.device.close()
|
||||
|
||||
|
||||
|
||||
class File(Escpos):
|
||||
""" Define Generic file printer """
|
||||
|
||||
def __init__(self, devfile="/dev/usb/lp0"):
|
||||
def __init__(self, devfile="/dev/usb/lp0", *args, **kwargs):
|
||||
"""
|
||||
@param devfile : Device file under dev filesystem
|
||||
"""
|
||||
Escpos.__init__(self, *args, **kwargs)
|
||||
self.devfile = devfile
|
||||
self.open()
|
||||
|
||||
|
||||
def open(self):
|
||||
""" Open system file """
|
||||
self.device = open(self.devfile, "wb")
|
||||
|
||||
if self.device is None:
|
||||
print "Could not open the specified file %s" % self.devfile
|
||||
print("Could not open the specified file %s" % self.devfile)
|
||||
|
||||
def flush(self):
|
||||
"""Flush printing content"""
|
||||
self.device.flush()
|
||||
|
||||
def _raw(self, msg):
|
||||
""" Print any command sent in raw format """
|
||||
if type(msg) is str:
|
||||
self.device.write(msg.encode());
|
||||
else:
|
||||
self.device.write(msg);
|
||||
|
||||
|
||||
def __del__(self):
|
||||
""" Close system file """
|
||||
self.device.close()
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
-e .
|
||||
8
setup.py
8
setup.py
|
|
@ -23,7 +23,13 @@ setup(
|
|||
'Operating System :: GNU/Linux',
|
||||
'Intended Audience :: Developers',
|
||||
'Programming Language :: Python',
|
||||
'Topic :: System :: Pheripherals',
|
||||
'Topic :: System :: Peripherals',
|
||||
'Topic :: Software Development :: Libraries :: Python Modules',
|
||||
],
|
||||
install_requires=[
|
||||
'pyusb',
|
||||
'Pillow>=2.0',
|
||||
'qrcode>=4.0',
|
||||
'pyserial',
|
||||
],
|
||||
)
|
||||
|
|
|
|||
Loading…
Reference in New Issue