)),
("y-align: bottom",
layout.SimpleBoxLayoutRule(
x_align=layout.AxisAlignment.ALIGN_MID,
y_align=layout.AxisAlignment.ALIGN_MIN,
)),
(f"""
y-align: bottom
x-align: mid
margins:
left: 10
right: 10
""",
layout.SimpleBoxLayoutRule(x_align=layout.AxisAlignment.ALIGN_MID,
y_align=layout.AxisAlignment.ALIGN_MIN,
margins=layout.Margins(left=10, right=10))),
(f"""
y-align: bottom
x-align: mid
margins: [10, 10, 0, 0]
""",
layout.SimpleBoxLayoutRule(x_align=layout.AxisAlignment.ALIGN_MID,
y_align=layout.AxisAlignment.ALIGN_MIN,
margins=layout.Margins(left=10, right=10))),
(f"""
y-align: bottom
x-align: mid
inner-content-scaling: none
""",
layout.SimpleBoxLayoutRule(
x_align=layout.AxisAlignment.ALIGN_MID,
def test_read_qr_config():
from pyhanko.pdf_utils.font import SimpleFontEngineFactory
from pyhanko.pdf_utils.font.opentype import GlyphAccumulatorFactory
from pyhanko_tests.test_text import NOTO_SERIF_JP
config_string = f"""
stamp-styles:
default:
text-box-style:
font: {NOTO_SERIF_JP}
type: qr
background: __stamp__
qr-position: right
inner-content-layout:
y-align: bottom
x-align: mid
margins:
left: 10
right: 10
alternative1:
text-box-style:
font: {NOTO_SERIF_JP}
background: pyhanko_tests/data/img/stamp-indexed.png
type: qr
alternative2:
type: qr
background: pyhanko_tests/data/pdf/pdf-background-test.pdf
alternative3:
type: text
wrong-position:
type: qr
qr-position: bleh
"""
cli_config: config.CLIConfig = config.parse_cli_config(config_string)
default_qr_style = cli_config.get_stamp_style()
assert isinstance(default_qr_style, QRStampStyle)
assert default_qr_style.background is stamp.STAMP_ART_CONTENT
assert isinstance(default_qr_style.text_box_style.font,
GlyphAccumulatorFactory)
assert default_qr_style.qr_position == stamp.QRPosition.RIGHT_OF_TEXT
expected_layout = layout.SimpleBoxLayoutRule(
x_align=layout.AxisAlignment.ALIGN_MID,
y_align=layout.AxisAlignment.ALIGN_MIN,
margins=layout.Margins(left=10, right=10))
assert default_qr_style.inner_content_layout == expected_layout
alternative1 = cli_config.get_stamp_style('alternative1')
assert isinstance(alternative1, QRStampStyle)
assert isinstance(alternative1.background, PdfImage)
assert isinstance(alternative1.text_box_style.font,
GlyphAccumulatorFactory)
assert alternative1.qr_position == stamp.QRPosition.LEFT_OF_TEXT
alternative2 = cli_config.get_stamp_style('alternative2')
assert isinstance(alternative2, QRStampStyle)
assert isinstance(alternative2.background, ImportedPdfPage)
assert isinstance(alternative2.text_box_style.font,
SimpleFontEngineFactory)
alternative3 = cli_config.get_stamp_style('alternative3')
assert isinstance(alternative3, TextStampStyle)
assert alternative3.background is None
assert isinstance(alternative3.text_box_style.font,
SimpleFontEngineFactory)
with pytest.raises(ConfigurationError, match='not a valid QR position'):
cli_config.get_stamp_style('wrong-position')
with pytest.raises(ConfigurationError):
cli_config.get_stamp_style('theresnosuchstyle')
def _inner_layout_natural_size(self):
text_commands, (text_width, text_height) \
= super()._inner_layout_natural_size()
qr_ref, natural_qr_size = self._qr_xobject()
self.set_resource(
category=content.ResourceType.XOBJECT, name=pdf_name('/QR'),
value=qr_ref
)
style = self.style
stamp_box = self.box
# To size the QR code, we proceed as follows:
# - If qr_inner_size is not None, use it
# - If the stamp has a fully defined bbox already,
# make sure it fits within the innseps, and it's not too much smaller
# than the text box
# - Else, scale down by DEFAULT_QR_SCALE and use that value
#
# Note: if qr_inner_size is defined AND the stamp bbox is available
# already, scaling might still take effect depending on the inner layout
# rule.
innsep = style.innsep
if style.qr_inner_size is not None:
qr_size = style.qr_inner_size
elif stamp_box.width_defined and stamp_box.height_defined:
# ensure that the QR code doesn't shrink too much if the text
# box is too tall.
min_dim = min(
max(stamp_box.height, text_height),
max(stamp_box.width, text_width)
)
qr_size = min_dim - 2 * innsep
else:
qr_size = int(round(DEFAULT_QR_SCALE * natural_qr_size))
qr_innunits_scale = qr_size / natural_qr_size
qr_padded = qr_size + 2 * innsep
# Next up: put the QR code and the text box together to get the
# inner layout bounding box
if style.qr_position.horizontal_flow:
inn_width = qr_padded + text_width
inn_height = max(qr_padded, text_height)
else:
inn_width = max(qr_padded, text_width)
inn_height = qr_padded + text_height
# grab the base layout rule from the QR position setting
default_layout: layout.SimpleBoxLayoutRule = style.qr_position.value
# Fill in the margins
qr_layout_rule = layout.SimpleBoxLayoutRule(
x_align=default_layout.x_align, y_align=default_layout.y_align,
margins=layout.Margins.uniform(innsep),
# There's no point in scaling here, the inner content canvas
# is always big enough
inner_content_scaling=layout.InnerScaling.NO_SCALING
)
inner_box = layout.BoxConstraints(inn_width, inn_height)
qr_inn_pos = qr_layout_rule.fit(inner_box, qr_size, qr_size)
# we still need to take the axis reversal into account
# (which also implies an adjustment in the y displacement)
draw_qr_command = b'q %g 0 0 %g %g %g cm /QR Do Q' % (
qr_inn_pos.x_scale * qr_innunits_scale,
-qr_inn_pos.y_scale * qr_innunits_scale,
qr_inn_pos.x_pos, qr_inn_pos.y_pos + qr_size,
)
# Time to put in the text box now
if style.qr_position == QRPosition.LEFT_OF_TEXT:
tb_margins = layout.Margins(
left=qr_padded, right=0, top=0, bottom=0
)
elif style.qr_position == QRPosition.RIGHT_OF_TEXT:
tb_margins = layout.Margins(
right=qr_padded, left=0, top=0, bottom=0
)
elif style.qr_position == QRPosition.BELOW_TEXT:
tb_margins = layout.Margins(
bottom=qr_padded, right=0, left=0, top=0
)
else:
tb_margins = layout.Margins(
top=qr_padded, right=0, left=0, bottom=0
)
tb_layout_rule = layout.SimpleBoxLayoutRule(
# flip around the alignment conventions of the default layout
# to position the text box on the other side
x_align=default_layout.x_align.flipped,
y_align=default_layout.y_align.flipped,
margins=tb_margins,
inner_content_scaling=layout.InnerScaling.NO_SCALING
)
# position the text box
text_inn_pos = tb_layout_rule.fit(inner_box, text_width, text_height)
commands = [draw_qr_command, b'q', text_inn_pos.as_cm()]
commands.extend(text_commands)
commands.append(b'Q')
return commands, (inn_width, inn_height)