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DOC extend image-docstring

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Patrick Kanzler 2016-04-28 21:57:57 +02:00
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commit 6a2673d01d
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1 changed files with 17 additions and 1 deletions
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escpos/escpos.py
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@ -52,7 +52,23 @@ class Escpos(object):
def image(self, img_source, high_density_vertical=True, high_density_horizontal=True, impl="bitImageRaster"):
""" Print an image
You can select whether the printer should print in high density or not. The default value is high density.
When printing in low density, the image will be stretched.
Esc/Pos supplies several commands for printing. This function supports three of them. Please try to vary the
implementations if you have any problems. For example the printer `IT80-002` will have trouble aligning
images that are not printed in Column-mode.
The available printing implementations are:
* `bitImageRaster`: prints with the `GS v 0`-command
* `graphics`: prints with the `GS ( L`-command
* `bitImageColumn`: prints with the `ESC *`-command
:param img_source: PIL image or filename to load: `jpg`, `gif`, `png` or `bmp`
:param high_density_vertical: print in high density in vertical direction *default:* True
:param high_density_horizontal: print in high density in horizontal direction *default:* True
:param impl: choose image printing mode between `bitImageRaster`, `graphics` or `bitImageColumn`
"""
im = EscposImage(img_source)