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FIX and review barcode-printing

This commit is contained in:
Patrick Kanzler 2016-01-14 01:00:53 +01:00
parent d00fc5016b
commit cd2da59fc2
1 changed files with 19 additions and 4 deletions
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23
escpos/escpos.py
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@ -147,6 +147,9 @@ class Escpos(object):
Prints an image. The image is automatically adjusted in size in order to print it. Prints an image. The image is automatically adjusted in size in order to print it.
.. todo:: Seems to be broken. Write test that simply executes function with a dummy printer in order to
check for bugs like these in the future.
:param path_img: complete filename and path to image of type `jpg`, `gif`, `png` or `bmp` :param path_img: complete filename and path to image of type `jpg`, `gif`, `png` or `bmp`
""" """
im_open = Image.open(path_img) im_open = Image.open(path_img)
@ -163,7 +166,11 @@ class Escpos(object):
self._convert_image(im) self._convert_image(im)
def fullimage(self, img, max_height=860, width=512, histeq=True, bandsize=255): def fullimage(self, img, max_height=860, width=512, histeq=True, bandsize=255):
""" Resizes and prints an arbitrarily sized image """ """ Resizes and prints an arbitrarily sized image
.. todo:: Seems to be broken. Write test that simply executes function with a dummy printer in order to
check for bugs like these in the future.
"""
if isinstance(img, (Image, Image.Image)): if isinstance(img, (Image, Image.Image)):
im = img.convert("RGB") im = img.convert("RGB")
else: else:
@ -310,6 +317,13 @@ class Escpos(object):
def barcode(self, code, bc, height, width, pos, font): def barcode(self, code, bc, height, width, pos, font):
""" Print Barcode """ Print Barcode
.. todo:: Documentation tells about default values. In fact no default values exist and supplying a default
value does not work.
.. todo:: Add a method to check barcode codes.
.. todo:: On TM-T88II width from 1 to 6 is accepted. Try to acquire command reference and correct the code.
.. todo:: Supplying pos has no effect in TM-T88II. Printed always below. Verify with other printers and , if
necessary, turn this into an issue.
:param code: alphanumeric data to be printed as bar code :param code: alphanumeric data to be printed as bar code
:param bc: barcode format, possible values are: :param bc: barcode format, possible values are:
@ -322,10 +336,10 @@ class Escpos(object):
* NW7 * NW7
If none is specified, the method raises :py:exc:`~escpos.exceptions.BarcodeTypeError`. If none is specified, the method raises :py:exc:`~escpos.exceptions.BarcodeTypeError`.
:param height: barcode height, has to be between 2 and 6 :param height: barcode height, has to be between 1 and 255
*default*: 3
:param width: barcode width, has to be between 1 and 255
*default*: 64 *default*: 64
:param width: barcode width, has to be between 2 and 6
*default*: 3
:param pos: where to place the text relative to the barcode, *default*: below :param pos: where to place the text relative to the barcode, *default*: below
* ABOVE * ABOVE
@ -512,6 +526,7 @@ class Escpos(object):
Without any arguments the paper will be cut completely. With 'mode=PART' a partial cut will Without any arguments the paper will be cut completely. With 'mode=PART' a partial cut will
be attempted. Note however, that not all models can do a partial cut. See the documentation of be attempted. Note however, that not all models can do a partial cut. See the documentation of
your printer for details. your printer for details.
.. todo:: Check this function on TM-T88II.
:param mode: set to 'PART' for a partial cut :param mode: set to 'PART' for a partial cut
""" """