setop/python-escpos
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Code Activity

New high level barcode method. Closes #245, #244. (#527)

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* Merge software and hardware barcodes to one method

* Fix wrong sw barcode heigh/width

* Add missing param to _sw_barcode call

* Make barcode() smarter, improvements and clean up

* Use param font_size in sw_barcode()

* Update docstrings

* Update barcode examples and docs

* Add --force_software option to CLI

* Attempt to match the sw and hw barcode sizes

* Better approximation to native font size

* Fix docs build

* Update tests at test_function_softbarcode

* Fix exception

* Move image dpi setting to writter_options

* Fix _sw_barcode() docstring param

* Fix wrong default param in docstring

* improve linkage in documentation

---------

Co-authored-by: Patrick Kanzler <4189642+patkan@users.noreply.github.com>
Co-authored-by: Patrick Kanzler <dev@pkanzler.de>
This commit is contained in:
Benito López
2023-07-12 20:45:41 +02:00
committed by GitHub
parent 676d2840de
commit 3c11c1b9ab
7 changed files with 265 additions and 63 deletions
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47
src/escpos/constants.py
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@@ -27,12 +27,12 @@ FS = b"\x1c"
GS = b"\x1d"
# Feed control sequences
CTL_LF = b"\n" # Print and line feed
CTL_FF = b"\f" # Form feed
CTL_CR = b"\r" # Carriage return
CTL_HT = b"\t" # Horizontal tab
CTL_SET_HT = ESC + b"\x44" # Set horizontal tab positions
CTL_VT = b"\v" # Vertical tab
CTL_LF = b"\n" #: Print and line feed
CTL_FF = b"\f" #: Form feed
CTL_CR = b"\r" #: Carriage return
CTL_HT = b"\t" #: Horizontal tab
CTL_SET_HT = ESC + b"\x44" #: Set horizontal tab positions
CTL_VT = b"\v" #: Vertical tab
# Printer hardware
HW_INIT = ESC + b"@" # Clear data in buffer and reset modes
@@ -57,8 +57,8 @@ CD_KICK_5 = _CASH_DRAWER(b"\x01", 50, 50) # Sends a pulse to pin 5 []
# Paper Cutter
_CUT_PAPER = lambda m: GS + b"V" + m
PAPER_FULL_CUT = _CUT_PAPER(b"\x00") # Full cut paper
PAPER_PART_CUT = _CUT_PAPER(b"\x01") # Partial cut paper
PAPER_FULL_CUT = _CUT_PAPER(b"\x00") #: Full cut paper
PAPER_PART_CUT = _CUT_PAPER(b"\x01") #: Partial cut paper
# Beep (please note that the actual beep sequence may differ between devices)
BEEP = b"\x07"
@@ -168,8 +168,8 @@ TXT_STYLE = {
# Fonts
SET_FONT = lambda n: ESC + b"\x4d" + n
TXT_FONT_A = SET_FONT(b"\x00") # Font type A
TXT_FONT_B = SET_FONT(b"\x01") # Font type B
TXT_FONT_A = SET_FONT(b"\x00") #: Font type A
TXT_FONT_B = SET_FONT(b"\x01") #: Font type B
# Spacing
LINESPACING_RESET = ESC + b"2"
@@ -179,23 +179,23 @@ LINESPACING_FUNCS = {
180: ESC + b"3", # line_spacing/180 of an inch, 0 <= line_spacing <= 255
}
# Prefix to change the codepage. You need to attach a byte to indicate
# the codepage to use. We use escpos-printer-db as the data source.
#: Prefix to change the codepage. You need to attach a byte to indicate
#: the codepage to use. We use escpos-printer-db as the data source.
CODEPAGE_CHANGE = ESC + b"\x74"
# Barcode format
_SET_BARCODE_TXT_POS = lambda n: GS + b"H" + n
BARCODE_TXT_OFF = _SET_BARCODE_TXT_POS(b"\x00") # HRI barcode chars OFF
BARCODE_TXT_ABV = _SET_BARCODE_TXT_POS(b"\x01") # HRI barcode chars above
BARCODE_TXT_BLW = _SET_BARCODE_TXT_POS(b"\x02") # HRI barcode chars below
BARCODE_TXT_BTH = _SET_BARCODE_TXT_POS(b"\x03") # HRI both above and below
BARCODE_TXT_OFF = _SET_BARCODE_TXT_POS(b"\x00") #: HRI barcode chars OFF
BARCODE_TXT_ABV = _SET_BARCODE_TXT_POS(b"\x01") #: HRI barcode chars above
BARCODE_TXT_BLW = _SET_BARCODE_TXT_POS(b"\x02") #: HRI barcode chars below
BARCODE_TXT_BTH = _SET_BARCODE_TXT_POS(b"\x03") #: HRI both above and below
_SET_HRI_FONT = lambda n: GS + b"f" + n
BARCODE_FONT_A = _SET_HRI_FONT(b"\x00") # Font type A for HRI barcode chars
BARCODE_FONT_B = _SET_HRI_FONT(b"\x01") # Font type B for HRI barcode chars
BARCODE_FONT_A = _SET_HRI_FONT(b"\x00") #: Font type A for HRI barcode chars
BARCODE_FONT_B = _SET_HRI_FONT(b"\x01") #: Font type B for HRI barcode chars
BARCODE_HEIGHT = GS + b"h" # Barcode Height [1-255]
BARCODE_WIDTH = GS + b"w" # Barcode Width [2-6]
BARCODE_HEIGHT = GS + b"h" #: Barcode Height [1-255]
BARCODE_WIDTH = GS + b"w" #: Barcode Width [2-6]
# NOTE: This isn't actually an ESC/POS command. It's the common prefix to the
# two "print bar code" commands:
@@ -204,7 +204,7 @@ BARCODE_WIDTH = GS + b"w" # Barcode Width [2-6]
# The latter command supports more barcode types
_SET_BARCODE_TYPE = lambda m: GS + b"k" + six.int2byte(m)
# Barcodes for printing function type A
#: Barcodes for printing function type A
BARCODE_TYPE_A = {
"UPC-A": _SET_BARCODE_TYPE(0),
"UPC-E": _SET_BARCODE_TYPE(1),
@@ -216,8 +216,8 @@ BARCODE_TYPE_A = {
"CODABAR": _SET_BARCODE_TYPE(6), # Same as NW7
}
# Barcodes for printing function type B
# The first 8 are the same barcodes as type A
#: Barcodes for printing function type B
#: The first 8 are the same barcodes as type A
BARCODE_TYPE_B = {
"UPC-A": _SET_BARCODE_TYPE(65),
"UPC-E": _SET_BARCODE_TYPE(66),
@@ -236,6 +236,7 @@ BARCODE_TYPE_B = {
"GS1 DATABAR EXPANDED": _SET_BARCODE_TYPE(78),
}
#: supported barcode formats
BARCODE_FORMATS = {
"UPC-A": ([(11, 12)], "^[0-9]{11,12}$"),
"UPC-E": ([(7, 8), (11, 12)], "^([0-9]{7,8}|[0-9]{11,12})$"),