def test_four_qr_stamps(fixed_size):
# Share a font subset, the text is the same everywhere
gaf = GlyphAccumulatorFactory(NOTO_SANS, font_size=10)
w = empty_page()
positions = ((10, 700), (10, 500), (10, 10), (260, 10))
for qr_pos, (x, y) in zip(QRPosition, positions):
style = QRStampStyle(
stamp_text='Test stamp text\nAnother line of text',
text_box_style=TextBoxStyle(font=gaf),
qr_position=qr_pos, background=STAMP_ART_CONTENT,
background_opacity=0.4
)
if fixed_size:
if qr_pos.horizontal_flow:
box = layout.BoxConstraints(width=300, height=100)
else:
box = layout.BoxConstraints(width=100, height=300)
else:
box = None
ts = QRStamp(
writer=w, style=style, box=box, url='https://example.com'
)
ts.apply(0, x=x, y=y)
postfix = 'fixed' if fixed_size else 'natural'
compare_output(w, f'{EXPECTED_OUTPUT_DIR}/four-stamps-{postfix}.pdf')
def test_stamp_with_fixed_pdf_content():
w = empty_page()
style = StaticStampStyle.from_pdf_file(
'pyhanko_tests/data/pdf/pdf-background-test.pdf')
stamp = style.create_stamp(w,
box=layout.BoxConstraints(200, 50),
text_params={})
stamp.apply(0, x=30, y=600)
compare_output(w, f'{EXPECTED_OUTPUT_DIR}/stamp-from-static-pdf.pdf')
def test_simple_text_stamp_string_keyed_font():
gaf = GlyphAccumulatorFactory(FREE_SERIF, font_size=10)
w = empty_page()
style = TextStampStyle(
stamp_text=("Hi, this is a string-keyed font test.\n"
"This should have a ligature: difficult"),
text_box_style=TextBoxStyle(font=gaf),
)
ts = TextStamp(w, style, box=layout.BoxConstraints(200, 50))
ts.apply(dest_page=0, x=70, y=50)
compare_output(w, f'{EXPECTED_OUTPUT_DIR}/freeserif-test.pdf')
def test_stamp_with_scaled_bitmap_bg():
w = empty_page()
text = '\n'.join('Test test test test on a bitmap background!'
for _ in range(3))
style = TextStampStyle(
stamp_text=text,
background=PdfImage('pyhanko_tests/data/img/stamp-indexed.png'),
)
ts = TextStamp(w, style, box=layout.BoxConstraints(400, 100))
ts.apply(0, x=30, y=600)
compare_output(w, f'{EXPECTED_OUTPUT_DIR}/scaled-bitmap-bg.pdf')
def test_stamp_with_scaled_pdf_bg():
w = empty_page()
text = '\n'.join('Test test test test on a PDF background!'
for _ in range(3))
style = TextStampStyle(
stamp_text=text,
background=ImportedPdfPage(
'pyhanko_tests/data/pdf/pdf-background-test.pdf'),
)
ts = TextStamp(w, style, box=layout.BoxConstraints(200, 50))
ts.apply(0, x=30, y=600)
compare_output(w, f'{EXPECTED_OUTPUT_DIR}/stamp-on-pdf-bg.pdf')
def _arabic_text_page(stream_xrefs):
w = empty_page(stream_xrefs=stream_xrefs)
style = TextStampStyle(
stamp_text='اَلْفُصْحَىٰ',
text_box_style=TextBoxStyle(
font=GlyphAccumulatorFactory(NOTO_SANS_ARABIC), ),
inner_content_layout=layout.SimpleBoxLayoutRule(
x_align=layout.AxisAlignment.ALIGN_MID,
y_align=layout.AxisAlignment.ALIGN_MID,
inner_content_scaling=layout.InnerScaling.STRETCH_TO_FIT,
margins=layout.Margins.uniform(5)))
ts = TextStamp(writer=w,
style=style,
box=layout.BoxConstraints(width=300, height=200))
ts.apply(0, x=10, y=60)
return w
def test_japanese_vertical_text_stamp():
gaf = GlyphAccumulatorFactory(NOTO_SERIF_JP,
font_size=10,
writing_direction='ttb')
w = empty_page()
style = QRStampStyle(stamp_text=('テスト\n縦書きテスト\n改行してみましょう（括弧）\nPDF\n'
'ちょっと長めの文を書いてみた。'),
text_box_style=TextBoxStyle(font=gaf,
vertical_text=True),
qr_position=QRPosition.ABOVE_TEXT,
background=STAMP_ART_CONTENT,
background_opacity=0.4)
box = layout.BoxConstraints(width=100, height=300)
ts = QRStamp(writer=w, style=style, box=box, url='https://example.com')
ts.apply(0, x=10, y=415)
ts = QRStamp(writer=w, style=style, box=None, url='https://example.com')
ts.apply(0, x=400, y=415)
compare_output(w, f'{EXPECTED_OUTPUT_DIR}/ja-vert-stamps.pdf')
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)
:param y:
Vertical position of the stamp's lower left corner on the page.
:param url:
URL for the QR code to point to.
:param text_params:
Additional parameters for text template interpolation.
"""
_stamp_file(
input_name, output_name, style, QRStamp, dest_page, x, y,
url=url, text_params=text_params
)
STAMP_ART_CONTENT = content.RawContent(
box=layout.BoxConstraints(width=100, height=100),
data=b'''
q 1 0 0 -1 0 100 cm
0.603922 0.345098 0.54902 rg
3.699 65.215 m 3.699 65.215 2.375 57.277 7.668 51.984 c 12.957 46.695 27.512
49.34 39.418 41.402 c 39.418 41.402 31.48 40.078 32.801 33.465 c 34.125
26.852 39.418 28.172 39.418 24.203 c 39.418 20.234 30.156 17.59 30.156
14.945 c 30.156 12.297 28.465 1.715 50 1.715 c 71.535 1.715 69.844 12.297
69.844 14.945 c 69.844 17.59 60.582 20.234 60.582 24.203 c 60.582 28.172
65.875 26.852 67.199 33.465 c 68.52 40.078 60.582 41.402 60.582 41.402
c 72.488 49.34 87.043 46.695 92.332 51.984 c 97.625 57.277 96.301 65.215
96.301 65.215 c h f
3.801 68.734 92.398 7.391 re f
3.801 79.512 92.398 7.391 re f
3.801 90.289 92.398 7.391 re f
Q
w = empty_page()
style = StaticStampStyle.from_pdf_file(
'pyhanko_tests/data/pdf/pdf-background-test.pdf')
stamp = style.create_stamp(w,
box=layout.BoxConstraints(200, 50),
text_params={})
stamp.apply(0, x=30, y=600)
compare_output(w, f'{EXPECTED_OUTPUT_DIR}/stamp-from-static-pdf.pdf')
@pytest.mark.parametrize('box', [
None,
layout.BoxConstraints(width=200),
layout.BoxConstraints(height=50),
layout.BoxConstraints(aspect_ratio=Fraction(4, 1)),
layout.BoxConstraints()
])
def test_static_stamp_enforce_box_defined(box):
w = empty_page()
style = StaticStampStyle.from_pdf_file(
'pyhanko_tests/data/pdf/pdf-background-test.pdf')
with pytest.raises(layout.LayoutError, match="predetermined bounding box"):
style.create_stamp(w, box=box, text_params={})
@with_layout_comparison
:param text_params:
Additional parameters for text template interpolation.
"""
_stamp_file(input_name,
output_name,
style,
QRStamp,
dest_page,
x,
y,
url=url,
text_params=text_params)
STAMP_ART_CONTENT = content.RawContent(box=layout.BoxConstraints(width=100,
height=100),
data=b'''
q 1 0 0 -1 0 100 cm
0.603922 0.345098 0.54902 rg
3.699 65.215 m 3.699 65.215 2.375 57.277 7.668 51.984 c 12.957 46.695 27.512
49.34 39.418 41.402 c 39.418 41.402 31.48 40.078 32.801 33.465 c 34.125
26.852 39.418 28.172 39.418 24.203 c 39.418 20.234 30.156 17.59 30.156
14.945 c 30.156 12.297 28.465 1.715 50 1.715 c 71.535 1.715 69.844 12.297
69.844 14.945 c 69.844 17.59 60.582 20.234 60.582 24.203 c 60.582 28.172
65.875 26.852 67.199 33.465 c 68.52 40.078 60.582 41.402 60.582 41.402
c 72.488 49.34 87.043 46.695 92.332 51.984 c 97.625 57.277 96.301 65.215
96.301 65.215 c h f
3.801 68.734 92.398 7.391 re f
3.801 79.512 92.398 7.391 re f
3.801 90.289 92.398 7.391 re f
Q