class Label(object):
commands = []
def __init__(self, printer, width=720):
self.c = Command()
self.printer = printer
self.width = 720
def printRaster(self, rasterFile):
im = Image.open(rasterFile)
if im.mode not in ("P"):
logger.info('Converting to b/w image')
im.convert('P')
width, height = im.size
if (width != self.width):
#resize to 720px width
logger.info('Resizing to 720px width')
im.resize(self.width, self.width / width * height, filter=Image.ANTIALIAS)
line = 0
row = 0
data = [""]
for px in list(im.getdata()):
if len(data) - 1 != line:
data.append("")
data[line] = data[line] + "%d" % px
row = row + 1
if row % self.width == 0:
line = line + 1
row = 0
logger.debug('%d lines of data' % len(data))
self.commands.append(self.c.invalidate())
self.commands.append(self.c.initialize())
#self.commands.append("1B6953") # Status
self.commands.append(self.c.select_mode(CommandMode.raster))
i = self.c.print_information(
PrintInformation.flags_media_type | PrintInformation.flags_media_width | PrintInformation.flags_printer_recovery_always_on,
PrintInformation.media_type_continous,
62, # width 62mm
0, # width infinite
len(data), # number if data lines
)
self.commands.append(i)
self.commands.append(self.c.auto_cut(True))
self.commands.append(self.c.cut_after(1))
self.commands.append(self.c.expand_mode(True, False))
self.commands.append(self.c.margin_amount(35))
self.commands.append(self.c.compression_mode(CompressionMode.no_compression))
for line in data:
hstr = '%0*X' % ((len(line) + 3) // 4, int(line, 2))
#b = bytes.fromhex(hstr)
self.commands.append(hstr)
self.commands.append(self.c.print_last_page())
for command in self.commands:
self.printer.send(command)
s = Status(self.printer)
s.read()
return s
def __init__(self, printer, width=720):
self.c = Command()
self.printer = printer
self.width = 720