Image helper

Module escpos.image

Image format handling class

This module contains the image format handler EscposImage.

author

Michael Billington

organization

python-escpos

copyright

Copyright (c) 2016 Michael Billington <michael.billington@gmail.com>

license

MIT

class escpos.image.EscposImage(img_source)

Bases: object

Load images in, and output ESC/POS formats.

The class is designed to efficiently delegate image processing to PIL, rather than spend CPU cycles looping over pixels.

property width

Width of image in pixels

property width_bytes

Width of image if you use 8 pixels per byte and 0-pad at the end.

property height

Height of image in pixels

to_column_format(high_density_vertical=True)

Extract slices of an image as equal-sized blobs of column-format data.

Parameters

high_density_vertical – Printed line height in dots

to_raster_format()

Convert image to raster-format binary

split(fragment_height)

Split an image into multiple fragments after fragment_height pixels

Parameters

fragment_height – height of fragment

Returns

list of PIL objects

center(max_width)

In-place image centering

Param

Maximum width in order to deduce x offset for centering

Returns

None