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First attempt at centering images and QRs (#250)

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This was tested on ZJ-5890 with success. By default centering is
deactivated for backward compatibility. Trying to center a QR code in
native mode will raise an exception as we do not know ATM if the native
rendering is centered by default or not.

* Added basic tests for center feature

* Check image size before centering
This commit is contained in:
Romain Porte
2017-08-31 09:25:35 +02:00
committed by Patrick Kanzler
parent 50c627fbb0
commit b648cfd67f
6 changed files with 74 additions and 10 deletions
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25
test/test_function_image.py
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@@ -145,10 +145,8 @@ def test_large_graphics():
assert(instance.output == b'\x1dv0\x00\x01\x00\x01\x00\xc0\x1dv0\x00\x01\x00\x01\x00\x00')
def test_width_too_large():
"""
Test printing an image that is too large in width.
"""
@pytest.fixture
def dummy_with_width():
instance = printer.Dummy()
instance.profile.profile_data = {
'media': {
@@ -157,8 +155,25 @@ def test_width_too_large():
}
}
}
return instance
def test_width_too_large(dummy_with_width):
"""
Test printing an image that is too large in width.
"""
instance = dummy_with_width
with pytest.raises(ImageWidthError):
instance.image(Image.new("RGB", (385, 200)))
instance.image(Image.new("RGB", (384, 200)))
instance.image(Image.new("RGB", (384, 200)))
def test_center_image(dummy_with_width):
instance = dummy_with_width
with pytest.raises(ImageWidthError):
instance.image(Image.new("RGB", (385, 200)), center=True)
instance.image(Image.new("RGB", (384, 200)), center=True)