parent
4584e3138a
commit
44c79eaf11
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@ -184,15 +184,15 @@ BARCODE_TYPES = {
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}
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## QRCode error correction levels
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QR_ECLEVEL_L = 0;
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QR_ECLEVEL_M = 1;
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QR_ECLEVEL_Q = 2;
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QR_ECLEVEL_H = 3;
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QR_ECLEVEL_L = 0
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QR_ECLEVEL_M = 1
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QR_ECLEVEL_Q = 2
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QR_ECLEVEL_H = 3
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## QRcode models
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QR_MODEL_1 = 1;
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QR_MODEL_2 = 2;
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QR_MICRO = 3;
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QR_MODEL_1 = 1
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QR_MODEL_2 = 2
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QR_MICRO = 3
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# Image format
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# NOTE: _PRINT_RASTER_IMG is the obsolete ESC/POS "print raster bit image"
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@ -60,25 +60,25 @@ class Escpos(object):
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if impl == "bitImageRaster":
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# GS v 0, raster format bit image
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density_byte = (0 if high_density_vertical else 1) + (0 if high_density_horizontal else 2)
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header = GS + b"v0" + six.int2byte(density_byte) + self._int_low_high(im.width_bytes, 2) + self._int_low_high(im.height, 2);
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header = GS + b"v0" + six.int2byte(density_byte) + self._int_low_high(im.width_bytes, 2) + self._int_low_high(im.height, 2)
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self._raw(header + im.to_raster_format())
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if impl == "graphics":
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# GS ( L raster format graphics
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img_header = self._int_low_high(im.width, 2) + self._int_low_high(im.height, 2);
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tone = b'0';
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colors = b'1';
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img_header = self._int_low_high(im.width, 2) + self._int_low_high(im.height, 2)
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tone = b'0'
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colors = b'1'
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ym = six.int2byte(1 if high_density_vertical else 2)
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xm = six.int2byte(1 if high_density_horizontal else 2)
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header = tone + xm + ym + colors + img_header
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raster_data = im.to_raster_format()
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self._image_send_graphics_data(b'0', b'p', header + raster_data);
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self._image_send_graphics_data(b'0', b'2', b'');
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self._image_send_graphics_data(b'0', b'p', header + raster_data)
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self._image_send_graphics_data(b'0', b'2', b'')
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if impl == "bitImageColumn":
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# ESC *, column format bit image
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density_byte = (1 if high_density_horizontal else 0) + (32 if high_density_vertical else 0);
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header = ESC + b"*" + six.int2byte(density_byte) + self._int_low_high( im.width, 2 );
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density_byte = (1 if high_density_horizontal else 0) + (32 if high_density_vertical else 0)
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header = ESC + b"*" + six.int2byte(density_byte) + self._int_low_high( im.width, 2 )
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outp = []
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outp.append(ESC + b"3" + six.int2byte(16)) # Adjust line-feed size
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for blob in im.to_column_format(high_density_vertical):
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@ -94,7 +94,7 @@ class Escpos(object):
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:param fn: Function number to use, as byte
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:param data: Data to send
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"""
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header = self._int_low_high(len(data) + 2, 2);
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header = self._int_low_high(len(data) + 2, 2)
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self._raw(GS + b'(L' + header + m + fn + data)
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def qr(self, content, ec=QR_ECLEVEL_L, size=3, model=QR_MODEL_2, native=False):
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@ -138,14 +138,14 @@ class Escpos(object):
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# Native 2D code printing
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cn = b'1' # Code type for QR code
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# Select model: 1, 2 or micro.
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self._send_2d_code_data(six.int2byte(65), cn, six.int2byte(48 + model) + six.int2byte(0));
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self._send_2d_code_data(six.int2byte(65), cn, six.int2byte(48 + model) + six.int2byte(0))
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# Set dot size.
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self._send_2d_code_data(six.int2byte(67), cn, six.int2byte(size));
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self._send_2d_code_data(six.int2byte(67), cn, six.int2byte(size))
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# Set error correction level: L, M, Q, or H
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self._send_2d_code_data(six.int2byte(69), cn, six.int2byte(48 + ec));
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self._send_2d_code_data(six.int2byte(69), cn, six.int2byte(48 + ec))
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# Send content & print
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self._send_2d_code_data(six.int2byte(80), cn, content.encode('utf-8'), b'0');
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self._send_2d_code_data(six.int2byte(81), cn, b'', b'0');
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self._send_2d_code_data(six.int2byte(80), cn, content.encode('utf-8'), b'0')
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self._send_2d_code_data(six.int2byte(81), cn, b'', b'0')
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def _send_2d_code_data(self, fn, cn, data, m=b''):
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""" Wrapper for GS ( k, to calculate and send correct data length.
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@ -157,7 +157,7 @@ class Escpos(object):
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"""
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if len(m) > 1 or len(cn) != 1 or len(fn) != 1:
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raise ValueError("cn and fn must be one byte each.")
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header = self._int_low_high(len(data) + len(m) + 2, 2);
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header = self._int_low_high(len(data) + len(m) + 2, 2)
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self._raw(GS + b'(k' + header + cn + fn + m + data)
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@staticmethod
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@ -167,12 +167,12 @@ class Escpos(object):
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:param inp_number: Input number
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:param out_bytes: The number of bytes to output (1 - 4).
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"""
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max_input = (256 << (out_bytes * 8) - 1);
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max_input = (256 << (out_bytes * 8) - 1)
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if not 1 <= out_bytes <= 4:
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raise ValueError("Can only output 1-4 byes")
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if not 0 <= inp_number <= max_input:
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raise ValueError("Number too large. Can only output up to {0} in {1} byes".format(max_input, out_bytes))
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outp = b'';
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outp = b''
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for _ in range(0, out_bytes):
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outp += six.int2byte(inp_number % 256)
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inp_number = inp_number // 256
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