setop/python-escpos
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Support changing the line spacing.

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Michael Elsdörfer
2016-08-25 15:56:32 +02:00
parent 798893caee
commit 854b75be30
3 changed files with 50 additions and 0 deletions
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7
src/escpos/constants.py
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@@ -101,6 +101,13 @@ TXT_ALIGN_RT = ESC + b'\x61\x02' # Right justification
TXT_INVERT_ON = GS + b'\x42\x01' # Inverse Printing ON
TXT_INVERT_OFF = GS + b'\x42\x00' # Inverse Printing OFF
# Spacing
LINESPACING_FUNCS = {
60: ESC + b'A', # line_spacing/60 of an inch, 0 <= line_spacing <= 85
360: ESC + b'+', # line_spacing/360 of an inch, 0 <= line_spacing <= 255
180: ESC + b'3', # line_spacing/180 of an inch, 0 <= line_spacing <= 255
}
# Char code table
CHARCODE_PC437 = ESC + b'\x74\x00' # USA: Standard Europe
CHARCODE_JIS = ESC + b'\x74\x01' # Japanese Katakana