def test_box_constraint_recalc():
w = 1600
h = 900
ar = Fraction(16, 9)
bc = BoxConstraints(aspect_ratio=ar)
assert bc.aspect_ratio == ar
with pytest.raises(BoxSpecificationError):
# noinspection PyStatementEffect
bc.height
with pytest.raises(BoxSpecificationError):
# noinspection PyStatementEffect
bc.width
bc.width = w
assert bc.height_defined
assert bc.height == h
bc = BoxConstraints(aspect_ratio=ar)
bc.height = h
assert bc.width_defined
assert bc.width == w
bc = BoxConstraints(width=w)
with pytest.raises(BoxSpecificationError):
# noinspection PyStatementEffect
bc.aspect_ratio
bc.height = h
assert bc.aspect_ratio == ar
def apply(self, sig_annot, writer):
"""
Apply the settings to an annotation.
.. danger::
This method is internal API.
"""
try:
x1, y1, x2, y2 = sig_annot['/Rect']
except KeyError:
return
w = abs(x1 - x2)
h = abs(y1 - y2)
if w and h:
# the field is probably a visible one, so we change its appearance
# stream to show some data about the signature
stamp = self._appearance_stamp(writer,
BoxConstraints(width=w, height=h))
sig_annot['/AP'] = stamp.as_appearances().as_pdf_object()
try:
# if there was an entry like this, it's meaningless now
del sig_annot[pdf_name('/AS')]
except KeyError:
pass
def _init_text_box(self):
# if necessary, try to adjust the text box's bounding box
# to the stamp's
box = self.box
expected_w = None
if box.width_defined:
expected_w = box.width - self.text_box_x()
self.expected_text_width = expected_w
expected_h = None
if box.height_defined:
expected_h = box.height - self.text_box_y()
box = None
if expected_h and expected_w:
# text boxes do not auto-scale their font size, so
# we have to take care of that
box = BoxConstraints(
aspect_ratio=Fraction(int(expected_w), int(expected_h)))
self.text_box = TextBox(self.style.text_box_style,
writer=self.writer,
resources=self.resources,
box=box)
def test_qr_fixed_size():
writer = IncrementalPdfFileWriter(BytesIO(MINIMAL))
w = 280
h = 60
qrss = stamp.QRStampStyle()
box = BoxConstraints(width=w, height=h)
qr = stamp.QRStamp(writer, 'https://example.com', qrss, box=box)
qr.as_form_xobject()
qr.apply(0, 10, 10)
assert qr.text_box.box.width == 224
def set_text_field_in_group(writer, ix, val):
tf_parent = writer.root['/AcroForm']['/Fields'][1].get_object()
tf = tf_parent['/Kids'][ix].get_object()
appearance = RawContent(box=BoxConstraints(height=60, width=130),
data=b'''q 0 0 1 rg BT /Ti 12 Tf (%s) Tj ET Q''' %
val.encode('ascii'))
tf['/V'] = generic.pdf_string(val)
tf['/AP'] = generic.DictionaryObject({
generic.pdf_name('/N'):
writer.add_object(appearance.as_form_xobject())
})
writer.update_container(tf)
def test_simple_textbox_render(with_border, natural_size):
tbs = text.TextBoxStyle(border_width=1 if with_border else 0)
bc = None if natural_size else BoxConstraints(width=1600, height=900)
textbox = text.TextBox(style=tbs, box=bc)
textbox.content = 'This is a textbox with some text.\nAnd multiple lines'
xobj = textbox.as_form_xobject()
x1, y1, x2, y2 = xobj['/BBox']
assert '/F1' in textbox.resources.font
if not natural_size:
assert abs(x1 - x2) == 1600
assert abs(y1 - y2) == 900
def __init__(self, barcode_type, code):
self.barcode_type = barcode_type
self.code = code
writer = PdfStreamBarcodeWriter()
# render everything here, since we need part of the rendering
# operation's results to determine the box parameters to pass to
# the parent
b = barcode.get_barcode(self.barcode_type, code=code, writer=writer)
self._barcode_commands = b.render()
(w, h) = writer.size
super().__init__(box=BoxConstraints(width=w, height=h))
def test_box_constraint_over_underspecify():
w = 1600
h = 900
ar = Fraction(16, 9)
with pytest.raises(BoxSpecificationError):
BoxConstraints(width=w, height=h, aspect_ratio=ar)
bc = BoxConstraints(width=w)
assert not bc.aspect_ratio_defined
assert not bc.height_defined
bc = BoxConstraints(width=w, height=h)
assert bc.aspect_ratio == ar
bc = BoxConstraints(width=w, aspect_ratio=ar)
assert bc.height == h
with pytest.raises(BoxSpecificationError):
bc.height += 1
bc = BoxConstraints(height=h, aspect_ratio=ar)
assert bc.width == w
with pytest.raises(BoxSpecificationError):
bc.width += 1
bc = BoxConstraints()
bc.width = w
assert bc.width_defined
assert not bc.height_defined
assert not bc.aspect_ratio_defined
bc.height = h
assert bc.aspect_ratio == ar
: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 = RawContent(box=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