# Copyright (c) 2006, Mathieu Fenniak
# Copyright (c) 2007, Ashish Kulkarni <kulkarni.ashish@gmail.com>
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
import math
import warnings
from decimal import Decimal
from typing import (
Any,
Callable,
Dict,
Iterable,
Iterator,
List,
Optional,
Sequence,
Set,
Tuple,
Union,
cast,
overload,
)
from ._cmap import build_char_map, unknown_char_map
from ._protocols import PdfReaderProtocol, PdfWriterProtocol
from ._text_extraction import (
OrientationNotFoundError,
crlf_space_check,
handle_tj,
mult,
)
from ._utils import (
CompressedTransformationMatrix,
File,
TransformationMatrixType,
deprecation_no_replacement,
deprecation_with_replacement,
logger_warning,
matrix_multiply,
)
from .constants import AnnotationDictionaryAttributes as ADA
from .constants import ImageAttributes as IA
from .constants import PageAttributes as PG
from .constants import Ressources as RES
from .errors import PageSizeNotDefinedError
from .filters import _xobj_to_image
from .generic import (
ArrayObject,
ContentStream,
DictionaryObject,
EncodedStreamObject,
FloatObject,
IndirectObject,
NameObject,
NullObject,
NumberObject,
RectangleObject,
)
MERGE_CROP_BOX = "cropbox" # pypdf<=3.4.0 used 'trimbox'
def _get_rectangle(self: Any, name: str, defaults: Iterable[str]) -> RectangleObject:
retval: Union[None, RectangleObject, IndirectObject] = self.get(name)
if isinstance(retval, RectangleObject):
return retval
if retval is None:
for d in defaults:
retval = self.get(d)
if retval is not None:
break
if isinstance(retval, IndirectObject):
retval = self.pdf.get_object(retval)
retval = RectangleObject(retval) # type: ignore
_set_rectangle(self, name, retval)
return retval
def getRectangle(
self: Any, name: str, defaults: Iterable[str]
) -> RectangleObject: # deprecated
deprecation_no_replacement("getRectangle", "3.0.0")
return _get_rectangle(self, name, defaults)
def _set_rectangle(self: Any, name: str, value: Union[RectangleObject, float]) -> None:
name = NameObject(name)
self[name] = value
def setRectangle(
self: Any, name: str, value: Union[RectangleObject, float]
) -> None: # deprecated
deprecation_no_replacement("setRectangle", "3.0.0")
_set_rectangle(self, name, value)
def _delete_rectangle(self: Any, name: str) -> None:
del self[name]
def deleteRectangle(self: Any, name: str) -> None: # deprecated
deprecation_no_replacement("deleteRectangle", "3.0.0")
del self[name]
def _create_rectangle_accessor(name: str, fallback: Iterable[str]) -> property:
return property(
lambda self: _get_rectangle(self, name, fallback),
lambda self, value: _set_rectangle(self, name, value),
lambda self: _delete_rectangle(self, name),
)
def createRectangleAccessor(
name: str, fallback: Iterable[str]
) -> property: # deprecated
deprecation_no_replacement("createRectangleAccessor", "3.0.0")
return _create_rectangle_accessor(name, fallback)
[docs]class PageObject(DictionaryObject):
"""
PageObject represents a single page within a PDF file.
Typically this object will be created by accessing the
:meth:`get_page()<pypdf.PdfReader.get_page>` method of the
:class:`PdfReader<pypdf.PdfReader>` class, but it is
also possible to create an empty page with the
:meth:`create_blank_page()<pypdf._page.PageObject.create_blank_page>` static method.
Args:
pdf: PDF file the page belongs to.
indirect_reference: Stores the original indirect reference to
this object in its source PDF
"""
original_page: "PageObject" # very local use in writer when appending
def __init__(
self,
pdf: Union[None, PdfReaderProtocol, PdfWriterProtocol] = None,
indirect_reference: Optional[IndirectObject] = None,
indirect_ref: Optional[IndirectObject] = None, # deprecated
) -> None:
DictionaryObject.__init__(self)
self.pdf: Union[None, PdfReaderProtocol, PdfWriterProtocol] = pdf
if indirect_ref is not None: # deprecated
warnings.warn(
(
"indirect_ref is deprecated and will be removed in "
"pypdf 4.0.0. Use indirect_reference instead of indirect_ref."
),
DeprecationWarning,
)
if indirect_reference is not None:
raise ValueError("Use indirect_reference instead of indirect_ref.")
indirect_reference = indirect_ref
self.indirect_reference = indirect_reference
@property
def indirect_ref(self) -> Optional[IndirectObject]: # deprecated
warnings.warn(
(
"indirect_ref is deprecated and will be removed in pypdf 4.0.0"
"Use indirect_reference instead of indirect_ref."
),
DeprecationWarning,
)
return self.indirect_reference
@indirect_ref.setter
def indirect_ref(self, value: Optional[IndirectObject]) -> None: # deprecated
self.indirect_reference = value
[docs] def hash_value_data(self) -> bytes:
data = super().hash_value_data()
data += b"%d" % id(self)
return data
@property
def user_unit(self) -> float:
"""
A read-only positive number giving the size of user space units.
It is in multiples of 1/72 inch. Hence a value of 1 means a user
space unit is 1/72 inch, and a value of 3 means that a user
space unit is 3/72 inch.
"""
return self.get(PG.USER_UNIT, 1)
[docs] @staticmethod
def create_blank_page(
pdf: Union[None, PdfReaderProtocol, PdfWriterProtocol] = None,
width: Union[float, Decimal, None] = None,
height: Union[float, Decimal, None] = None,
) -> "PageObject":
"""
Return a new blank page.
If ``width`` or ``height`` is ``None``, try to get the page size
from the last page of *pdf*.
Args:
pdf: PDF file the page belongs to
width: The width of the new page expressed in default user
space units.
height: The height of the new page expressed in default user
space units.
Returns:
The new blank page
Raises:
PageSizeNotDefinedError: if ``pdf`` is ``None`` or contains
no page
"""
page = PageObject(pdf)
# Creates a new page (cf PDF Reference 7.7.3.3)
page.__setitem__(NameObject(PG.TYPE), NameObject("/Page"))
page.__setitem__(NameObject(PG.PARENT), NullObject())
page.__setitem__(NameObject(PG.RESOURCES), DictionaryObject())
if width is None or height is None:
if pdf is not None and len(pdf.pages) > 0:
lastpage = pdf.pages[len(pdf.pages) - 1]
width = lastpage.mediabox.width
height = lastpage.mediabox.height
else:
raise PageSizeNotDefinedError
page.__setitem__(
NameObject(PG.MEDIABOX), RectangleObject((0, 0, width, height)) # type: ignore
)
return page
[docs] @staticmethod
def createBlankPage(
pdf: Optional[PdfReaderProtocol] = None,
width: Union[float, Decimal, None] = None,
height: Union[float, Decimal, None] = None,
) -> "PageObject": # deprecated
"""
Use :meth:`create_blank_page` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("createBlankPage", "create_blank_page", "3.0.0")
return PageObject.create_blank_page(pdf, width, height)
@property
def images(self) -> List[File]:
"""
Get a list of all images of the page.
This requires pillow. You can install it via 'pip install pypdf[image]'.
For the moment, this does NOT include inline images. They will be added
in future.
"""
images_extracted: List[File] = []
if RES.XOBJECT not in self[PG.RESOURCES]: # type: ignore
return images_extracted
x_object = self[PG.RESOURCES][RES.XOBJECT].get_object() # type: ignore
for obj in x_object:
if x_object[obj][IA.SUBTYPE] == "/Image":
extension, byte_stream = _xobj_to_image(x_object[obj])
if extension is not None:
filename = f"{obj[1:]}{extension}"
images_extracted.append(File(name=filename, data=byte_stream))
return images_extracted
@property
def rotation(self) -> int:
"""
The VISUAL rotation of the page.
This number has to be a multiple of 90 degrees: 0, 90, 180, or 270 are
valid values. This property does not affect ``/Contents``.
"""
rotate_obj = self.get(PG.ROTATE, 0)
return rotate_obj if isinstance(rotate_obj, int) else rotate_obj.get_object()
@rotation.setter
def rotation(self, r: Union[int, float]) -> None:
self[NameObject(PG.ROTATE)] = NumberObject((((int(r) + 45) // 90) * 90) % 360)
[docs] def transfer_rotation_to_content(self) -> None:
"""
Apply the rotation of the page to the content and the media/crop/...
boxes.
It's recommended to apply this function before page merging.
"""
r = -self.rotation # rotation to apply is in the otherway
self.rotation = 0
mb = RectangleObject(self.mediabox)
trsf = (
Transformation()
.translate(
-float(mb.left + mb.width / 2), -float(mb.bottom + mb.height / 2)
)
.rotate(r)
)
pt1 = trsf.apply_on(mb.lower_left)
pt2 = trsf.apply_on(mb.upper_right)
trsf = trsf.translate(-min(pt1[0], pt2[0]), -min(pt1[1], pt2[1]))
self.add_transformation(trsf, False)
for b in ["/MediaBox", "/CropBox", "/BleedBox", "/TrimBox", "/ArtBox"]:
if b in self:
rr = RectangleObject(self[b]) # type: ignore
pt1 = trsf.apply_on(rr.lower_left)
pt2 = trsf.apply_on(rr.upper_right)
self[NameObject(b)] = RectangleObject(
(
min(pt1[0], pt2[0]),
min(pt1[1], pt2[1]),
max(pt1[0], pt2[0]),
max(pt1[1], pt2[1]),
)
)
[docs] def rotate(self, angle: int) -> "PageObject":
"""
Rotate a page clockwise by increments of 90 degrees.
Args:
angle: Angle to rotate the page. Must be an increment of 90 deg.
Returns:
The rotated PageObject
"""
if angle % 90 != 0:
raise ValueError("Rotation angle must be a multiple of 90")
self[NameObject(PG.ROTATE)] = NumberObject(self.rotation + angle)
return self
[docs] def rotate_clockwise(self, angle: int) -> "PageObject": # deprecated
deprecation_with_replacement("rotate_clockwise", "rotate", "3.0.0")
return self.rotate(angle)
[docs] def rotateClockwise(self, angle: int) -> "PageObject": # deprecated
"""
Use :meth:`rotate_clockwise` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("rotateClockwise", "rotate", "3.0.0")
return self.rotate(angle)
[docs] def rotateCounterClockwise(self, angle: int) -> "PageObject": # deprecated
"""
Use :meth:`rotate_clockwise` with a negative argument instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("rotateCounterClockwise", "rotate", "3.0.0")
return self.rotate(-angle)
def _merge_resources(
self,
res1: DictionaryObject,
res2: DictionaryObject,
resource: Any,
new_res1: bool = True,
) -> Tuple[Dict[str, Any], Dict[str, Any]]:
try:
assert isinstance(self.indirect_reference, IndirectObject)
pdf = self.indirect_reference.pdf
is_pdf_writer = hasattr(
pdf, "_add_object"
) # ---------- expect isinstance(pdf,PdfWriter)
except (AssertionError, AttributeError):
pdf = None
is_pdf_writer = False
def compute_unique_key(base_key: str) -> Tuple[str, bool]:
"""
Find a key that either doesn't already exist or has the same value
(indicated by the bool)
Args:
base_key: An index is added to this to get the computed key
Returns:
A tuple (computed key, bool) where the boolean indicates
if there is a resource of the given computed_key with the same
value.
"""
value = page2res.raw_get(base_key)
# TODO : possible improvement : in case of writer, the indirect_reference
# can not be found because translated : this may be improved
# try the current key first (e.g. "foo"), but otherwise iterate
# through "foo-0", "foo-1", etc. new_res can contain only finitely
# many keys, thus this'll eventually end, even if it's been crafted
# to be maximally annoying.
computed_key = base_key
idx = 0
while computed_key in new_res:
if new_res.raw_get(computed_key) == value:
# there's already a resource of this name, with the exact
# same value
return computed_key, True
computed_key = f"{base_key}-{idx}"
idx += 1
return computed_key, False
if new_res1:
new_res = DictionaryObject()
new_res.update(res1.get(resource, DictionaryObject()).get_object())
else:
new_res = cast(DictionaryObject, res1[resource])
page2res = cast(
DictionaryObject, res2.get(resource, DictionaryObject()).get_object()
)
rename_res = {}
for key in page2res:
unique_key, same_value = compute_unique_key(key)
newname = NameObject(unique_key)
if key != unique_key:
# we have to use a different name for this
rename_res[key] = newname
if not same_value:
if is_pdf_writer:
new_res[newname] = page2res.raw_get(key).clone(pdf)
try:
new_res[newname] = new_res[newname].indirect_reference
except AttributeError:
pass
else:
new_res[newname] = page2res.raw_get(key)
lst = sorted(new_res.items())
new_res.clear()
for el in lst:
new_res[el[0]] = el[1]
return new_res, rename_res
@staticmethod
def _content_stream_rename(
stream: ContentStream,
rename: Dict[Any, Any],
pdf: Union[None, PdfReaderProtocol, PdfWriterProtocol],
) -> ContentStream:
if not rename:
return stream
stream = ContentStream(stream, pdf)
for operands, _operator in stream.operations:
if isinstance(operands, list):
for i in range(len(operands)):
op = operands[i]
if isinstance(op, NameObject):
operands[i] = rename.get(op, op)
elif isinstance(operands, dict):
for i in operands:
op = operands[i]
if isinstance(op, NameObject):
operands[i] = rename.get(op, op)
else:
raise KeyError(f"type of operands is {type(operands)}")
return stream
@staticmethod
def _push_pop_gs(
contents: Any, pdf: Union[None, PdfReaderProtocol, PdfWriterProtocol]
) -> ContentStream:
# adds a graphics state "push" and "pop" to the beginning and end
# of a content stream. This isolates it from changes such as
# transformation matricies.
stream = ContentStream(contents, pdf)
stream.operations.insert(0, ([], "q"))
stream.operations.append(([], "Q"))
return stream
@staticmethod
def _add_transformation_matrix(
contents: Any,
pdf: Union[None, PdfReaderProtocol, PdfWriterProtocol],
ctm: CompressedTransformationMatrix,
) -> ContentStream:
"""Add transformation matrix at the beginning of the given contents stream."""
a, b, c, d, e, f = ctm
contents = ContentStream(contents, pdf)
contents.operations.insert(
0,
[
[
FloatObject(a),
FloatObject(b),
FloatObject(c),
FloatObject(d),
FloatObject(e),
FloatObject(f),
],
" cm",
],
)
return contents
[docs] def get_contents(self) -> Optional[ContentStream]:
"""
Access the page contents.
Returns:
The ``/Contents`` object, or ``None`` if it doesn't exist.
``/Contents`` is optional, as described in PDF Reference 7.7.3.3
"""
if PG.CONTENTS in self:
return self[PG.CONTENTS].get_object() # type: ignore
else:
return None
[docs] def getContents(self) -> Optional[ContentStream]: # deprecated
"""
Use :meth:`get_contents` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("getContents", "get_contents", "3.0.0")
return self.get_contents()
[docs] def merge_page(self, page2: "PageObject", expand: bool = False) -> None:
"""
Merge the content streams of two pages into one.
Resource references
(i.e. fonts) are maintained from both pages. The mediabox/cropbox/etc
of this page are not altered. The parameter page's content stream will
be added to the end of this page's content stream, meaning that it will
be drawn after, or "on top" of this page.
Args:
page2: The page to be merged into this one. Should be
an instance of :class:`PageObject<PageObject>`.
expand: If true, the current page dimensions will be
expanded to accommodate the dimensions of the page to be merged.
"""
self._merge_page(page2, expand=expand)
[docs] def mergePage(self, page2: "PageObject") -> None: # deprecated
"""
Use :meth:`merge_page` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("mergePage", "merge_page", "3.0.0")
return self.merge_page(page2)
def _merge_page(
self,
page2: "PageObject",
page2transformation: Optional[Callable[[Any], ContentStream]] = None,
ctm: Optional[CompressedTransformationMatrix] = None,
over: bool = True,
expand: bool = False,
) -> None:
# First we work on merging the resource dictionaries. This allows us
# to find out what symbols in the content streams we might need to
# rename.
try:
assert isinstance(self.indirect_reference, IndirectObject)
if hasattr(
self.indirect_reference.pdf, "_add_object"
): # ---------- to detect PdfWriter
return self._merge_page_writer(
page2, page2transformation, ctm, over, expand
)
except (AssertionError, AttributeError):
pass
new_resources = DictionaryObject()
rename = {}
try:
original_resources = cast(DictionaryObject, self[PG.RESOURCES].get_object())
except KeyError:
original_resources = DictionaryObject()
try:
page2resources = cast(DictionaryObject, page2[PG.RESOURCES].get_object())
except KeyError:
page2resources = DictionaryObject()
new_annots = ArrayObject()
for page in (self, page2):
if PG.ANNOTS in page:
annots = page[PG.ANNOTS]
if isinstance(annots, ArrayObject):
for ref in annots:
new_annots.append(ref)
for res in (
RES.EXT_G_STATE,
RES.FONT,
RES.XOBJECT,
RES.COLOR_SPACE,
RES.PATTERN,
RES.SHADING,
RES.PROPERTIES,
):
new, newrename = self._merge_resources(
original_resources, page2resources, res
)
if new:
new_resources[NameObject(res)] = new
rename.update(newrename)
# Combine /ProcSet sets, making sure there's a consistent order
new_resources[NameObject(RES.PROC_SET)] = ArrayObject(
sorted(
set(
original_resources.get(RES.PROC_SET, ArrayObject()).get_object()
).union(
set(page2resources.get(RES.PROC_SET, ArrayObject()).get_object())
)
)
)
new_content_array = ArrayObject()
original_content = self.get_contents()
if original_content is not None:
new_content_array.append(
PageObject._push_pop_gs(original_content, self.pdf)
)
page2content = page2.get_contents()
if page2content is not None:
page2content = ContentStream(page2content, self.pdf)
rect = getattr(page2, MERGE_CROP_BOX)
page2content.operations.insert(
0,
(
map(
FloatObject,
[
rect.left,
rect.bottom,
rect.width,
rect.height,
],
),
"re",
),
)
page2content.operations.insert(1, ([], "W"))
page2content.operations.insert(2, ([], "n"))
if page2transformation is not None:
page2content = page2transformation(page2content)
page2content = PageObject._content_stream_rename(
page2content, rename, self.pdf
)
page2content = PageObject._push_pop_gs(page2content, self.pdf)
if over:
new_content_array.append(page2content)
else:
new_content_array.insert(0, page2content)
# if expanding the page to fit a new page, calculate the new media box size
if expand:
self._expand_mediabox(page2, ctm)
self[NameObject(PG.CONTENTS)] = ContentStream(new_content_array, self.pdf)
self[NameObject(PG.RESOURCES)] = new_resources
self[NameObject(PG.ANNOTS)] = new_annots
def _merge_page_writer(
self,
page2: "PageObject",
page2transformation: Optional[Callable[[Any], ContentStream]] = None,
ctm: Optional[CompressedTransformationMatrix] = None,
over: bool = True,
expand: bool = False,
) -> None:
# First we work on merging the resource dictionaries. This allows us
# to find out what symbols in the content streams we might need to
# rename.
assert isinstance(self.indirect_reference, IndirectObject)
pdf = self.indirect_reference.pdf
rename = {}
original_resources = cast(DictionaryObject, self[PG.RESOURCES].get_object())
page2resources = cast(DictionaryObject, page2[PG.RESOURCES].get_object())
for res in (
RES.EXT_G_STATE,
RES.FONT,
RES.XOBJECT,
RES.COLOR_SPACE,
RES.PATTERN,
RES.SHADING,
RES.PROPERTIES,
):
if res in page2resources:
if res not in original_resources:
original_resources[NameObject(res)] = DictionaryObject()
_, newrename = self._merge_resources(
original_resources, page2resources, res, False
)
rename.update(newrename)
# Combine /ProcSet sets.
if RES.PROC_SET in page2resources:
if RES.PROC_SET not in original_resources:
original_resources[NameObject(RES.PROC_SET)] = ArrayObject()
arr = cast(ArrayObject, original_resources[RES.PROC_SET])
for x in cast(ArrayObject, page2resources[RES.PROC_SET]):
if x not in arr:
arr.append(x)
arr.sort()
if PG.ANNOTS in page2:
if PG.ANNOTS not in self:
self[NameObject(PG.ANNOTS)] = ArrayObject()
annots = cast(ArrayObject, self[PG.ANNOTS].get_object())
if ctm is None:
trsf = Transformation()
else:
trsf = Transformation(ctm)
for a in cast(ArrayObject, page2[PG.ANNOTS]):
a = a.get_object()
aa = a.clone(
pdf,
ignore_fields=("/P", "/StructParent", "/Parent"),
force_duplicate=True,
)
r = cast(ArrayObject, a["/Rect"])
pt1 = trsf.apply_on((r[0], r[1]), True)
pt2 = trsf.apply_on((r[2], r[3]), True)
aa[NameObject("/Rect")] = ArrayObject(
(
min(pt1[0], pt2[0]),
min(pt1[1], pt2[1]),
max(pt1[0], pt2[0]),
max(pt1[1], pt2[1]),
)
)
if "/QuadPoints" in a:
q = cast(ArrayObject, a["/QuadPoints"])
aa[NameObject("/QuadPoints")] = ArrayObject(
cast(tuple, trsf.apply_on((q[0], q[1]), True))
+ cast(tuple, trsf.apply_on((q[2], q[3]), True))
+ cast(tuple, trsf.apply_on((q[4], q[5]), True))
+ cast(tuple, trsf.apply_on((q[6], q[7]), True))
)
try:
aa["/Popup"][NameObject("/Parent")] = aa.indirect_reference
except KeyError:
pass
try:
aa[NameObject("/P")] = self.indirect_reference
annots.append(aa.indirect_reference)
except AttributeError:
pass
new_content_array = ArrayObject()
original_content = self.get_contents()
if original_content is not None:
new_content_array.append(
PageObject._push_pop_gs(original_content, self.pdf)
)
page2content = page2.get_contents()
if page2content is not None:
page2content = ContentStream(page2content, self.pdf)
rect = getattr(page2, MERGE_CROP_BOX)
page2content.operations.insert(
0,
(
map(
FloatObject,
[
rect.left,
rect.bottom,
rect.width,
rect.height,
],
),
"re",
),
)
page2content.operations.insert(1, ([], "W"))
page2content.operations.insert(2, ([], "n"))
if page2transformation is not None:
page2content = page2transformation(page2content)
page2content = PageObject._content_stream_rename(
page2content, rename, self.pdf
)
page2content = PageObject._push_pop_gs(page2content, self.pdf)
if over:
new_content_array.append(page2content)
else:
new_content_array.insert(0, page2content)
# if expanding the page to fit a new page, calculate the new media box size
if expand:
self._expand_mediabox(page2, ctm)
if PG.CONTENTS not in self:
self[NameObject(PG.CONTENTS)] = pdf._add_object(ContentStream(None, pdf))
ind = self.raw_get(PG.CONTENTS)
try:
if not isinstance(ind, IndirectObject):
raise KeyError
pdf._replace_object(ind, ContentStream(new_content_array, pdf))
except KeyError:
self[NameObject(PG.CONTENTS)] = pdf._add_object(
ContentStream(new_content_array, pdf)
)
# self[NameObject(PG.CONTENTS)] = ContentStream(new_content_array, pdf)
# self[NameObject(PG.RESOURCES)] = new_resources
# self[NameObject(PG.ANNOTS)] = new_annots
def _expand_mediabox(
self, page2: "PageObject", ctm: Optional[CompressedTransformationMatrix]
) -> None:
corners1 = (
self.mediabox.left.as_numeric(),
self.mediabox.bottom.as_numeric(),
self.mediabox.right.as_numeric(),
self.mediabox.top.as_numeric(),
)
corners2 = (
page2.mediabox.left.as_numeric(),
page2.mediabox.bottom.as_numeric(),
page2.mediabox.left.as_numeric(),
page2.mediabox.top.as_numeric(),
page2.mediabox.right.as_numeric(),
page2.mediabox.top.as_numeric(),
page2.mediabox.right.as_numeric(),
page2.mediabox.bottom.as_numeric(),
)
if ctm is not None:
ctm = tuple(float(x) for x in ctm) # type: ignore[assignment]
new_x = tuple(
ctm[0] * corners2[i] + ctm[2] * corners2[i + 1] + ctm[4]
for i in range(0, 8, 2)
)
new_y = tuple(
ctm[1] * corners2[i] + ctm[3] * corners2[i + 1] + ctm[5]
for i in range(0, 8, 2)
)
else:
new_x = corners2[0:8:2]
new_y = corners2[1:8:2]
lowerleft = (min(new_x), min(new_y))
upperright = (max(new_x), max(new_y))
lowerleft = (min(corners1[0], lowerleft[0]), min(corners1[1], lowerleft[1]))
upperright = (
max(corners1[2], upperright[0]),
max(corners1[3], upperright[1]),
)
self.mediabox.lower_left = lowerleft
self.mediabox.upper_right = upperright
[docs] def merge_transformed_page(
self,
page2: "PageObject",
ctm: Union[CompressedTransformationMatrix, Transformation],
over: bool = True,
expand: bool = False,
) -> None:
"""
merge_transformed_page is similar to merge_page, but a transformation
matrix is applied to the merged stream.
Args:
page2: The page to be merged into this one.
ctm: a 6-element tuple containing the operands of the
transformation matrix
over: set the page2 content over page1 if True(default) else under
expand: Whether the page should be expanded to fit the dimensions
of the page to be merged.
"""
if isinstance(ctm, Transformation):
ctm = ctm.ctm
self._merge_page(
page2,
lambda page2Content: PageObject._add_transformation_matrix(
page2Content, page2.pdf, cast(CompressedTransformationMatrix, ctm)
),
ctm,
over,
expand,
)
[docs] def mergeTransformedPage(
self,
page2: "PageObject",
ctm: Union[CompressedTransformationMatrix, Transformation],
expand: bool = False,
) -> None: # deprecated
"""
deprecated
deprecated:: 1.28.0
Use :meth:`merge_transformed_page` instead.
"""
deprecation_with_replacement(
"page.mergeTransformedPage(page2, ctm,expand)",
"page.merge_transformed_page(page2,ctm,expand)",
"3.0.0",
)
self.merge_transformed_page(page2, ctm, expand)
[docs] def merge_scaled_page(
self, page2: "PageObject", scale: float, over: bool = True, expand: bool = False
) -> None:
"""
merge_scaled_page is similar to merge_page, but the stream to be merged
is scaled by applying a transformation matrix.
Args:
page2: The page to be merged into this one.
scale: The scaling factor
over: set the page2 content over page1 if True(default) else under
expand: Whether the page should be expanded to fit the
dimensions of the page to be merged.
"""
op = Transformation().scale(scale, scale)
self.merge_transformed_page(page2, op, over, expand)
[docs] def mergeScaledPage(
self, page2: "PageObject", scale: float, expand: bool = False
) -> None: # deprecated
"""
deprecated
.. deprecated:: 1.28.0
Use :meth:`merge_scaled_page` instead.
"""
deprecation_with_replacement(
"page.mergeScaledPage(page2, scale, expand)",
"page2.merge_scaled_page(page2, scale, expand)",
"3.0.0",
)
self.merge_scaled_page(page2, scale, expand)
[docs] def merge_rotated_page(
self,
page2: "PageObject",
rotation: float,
over: bool = True,
expand: bool = False,
) -> None:
"""
merge_rotated_page is similar to merge_page, but the stream to be merged
is rotated by applying a transformation matrix.
Args:
page2: The page to be merged into this one.
rotation: The angle of the rotation, in degrees
over: set the page2 content over page1 if True(default) else under
expand: Whether the page should be expanded to fit the
dimensions of the page to be merged.
"""
op = Transformation().rotate(rotation)
self.merge_transformed_page(page2, op, over, expand)
[docs] def mergeRotatedPage(
self, page2: "PageObject", rotation: float, expand: bool = False
) -> None: # deprecated
"""
deprecated
.. deprecated:: 1.28.0
Use :meth:`add_transformation` and :meth:`merge_page` instead.
"""
deprecation_with_replacement(
"page.mergeRotatedPage(page2, rotation, expand)",
"page2.mergeotatedPage(page2, rotation, expand)",
"3.0.0",
)
self.merge_rotated_page(page2, rotation, expand)
[docs] def merge_translated_page(
self,
page2: "PageObject",
tx: float,
ty: float,
over: bool = True,
expand: bool = False,
) -> None:
"""
mergeTranslatedPage is similar to merge_page, but the stream to be
merged is translated by applying a transformation matrix.
Args:
page2: the page to be merged into this one.
tx: The translation on X axis
ty: The translation on Y axis
over: set the page2 content over page1 if True(default) else under
expand: Whether the page should be expanded to fit the
dimensions of the page to be merged.
"""
op = Transformation().translate(tx, ty)
self.merge_transformed_page(page2, op, over, expand)
[docs] def mergeTranslatedPage(
self, page2: "PageObject", tx: float, ty: float, expand: bool = False
) -> None: # deprecated
"""
deprecated
.. deprecated:: 1.28.0
Use :meth:`merge_translated_page` instead.
"""
deprecation_with_replacement(
"page.mergeTranslatedPage(page2, tx, ty, expand)",
"page2.add_transformation(Transformation().translate(tx, ty)); "
"page.merge_page(page2, expand)",
"3.0.0",
)
self.merge_translated_page(page2, tx, ty, expand)
[docs] def mergeRotatedTranslatedPage(
self,
page2: "PageObject",
rotation: float,
tx: float,
ty: float,
expand: bool = False,
) -> None: # deprecated
"""
.. deprecated:: 1.28.0
Use :meth:`merge_transformed_page` instead.
"""
deprecation_with_replacement(
"page.mergeRotatedTranslatedPage(page2, rotation, tx, ty, expand)",
"page.merge_transformed_page(page2, Transformation().rotate(rotation).translate(tx, ty), expand);",
"3.0.0",
)
op = Transformation().translate(-tx, -ty).rotate(rotation).translate(tx, ty)
return self.merge_transformed_page(page2, op, expand)
[docs] def mergeRotatedScaledPage(
self, page2: "PageObject", rotation: float, scale: float, expand: bool = False
) -> None: # deprecated
"""
.. deprecated:: 1.28.0
Use :meth:`merge_transformed_page` instead.
"""
deprecation_with_replacement(
"page.mergeRotatedScaledPage(page2, rotation, scale, expand)",
"page.merge_transformed_page(page2, Transformation()"
".rotate(rotation).scale(scale)); page.merge_page(page2, expand)",
"3.0.0",
)
op = Transformation().rotate(rotation).scale(scale, scale)
self.mergeTransformedPage(page2, op, expand)
[docs] def mergeScaledTranslatedPage(
self,
page2: "PageObject",
scale: float,
tx: float,
ty: float,
expand: bool = False,
) -> None: # deprecated
"""
mergeScaledTranslatedPage is similar to merge_page, but the stream to
be merged is translated and scaled by applying a transformation matrix.
:param PageObject page2: the page to be merged into this one. Should be
an instance of :class:`PageObject<PageObject>`.
:param float scale: The scaling factor
:param float tx: The translation on X axis
:param float ty: The translation on Y axis
:param bool expand: Whether the page should be expanded to fit the
dimensions of the page to be merged.
.. deprecated:: 1.28.0
Use :meth:`add_transformation` and :meth:`merge_page` instead.
"""
deprecation_with_replacement(
"page.mergeScaledTranslatedPage(page2, scale, tx, ty, expand)",
"page2.add_transformation(Transformation().scale(scale).translate(tx, ty)); "
"page.merge_page(page2, expand)",
"3.0.0",
)
op = Transformation().scale(scale, scale).translate(tx, ty)
return self.mergeTransformedPage(page2, op, expand)
[docs] def mergeRotatedScaledTranslatedPage(
self,
page2: "PageObject",
rotation: float,
scale: float,
tx: float,
ty: float,
expand: bool = False,
) -> None: # deprecated
"""
mergeRotatedScaledTranslatedPage is similar to merge_page, but the
stream to be merged is translated, rotated and scaled by applying a
transformation matrix.
:param PageObject page2: the page to be merged into this one. Should be
an instance of :class:`PageObject<PageObject>`.
:param float tx: The translation on X axis
:param float ty: The translation on Y axis
:param float rotation: The angle of the rotation, in degrees
:param float scale: The scaling factor
:param bool expand: Whether the page should be expanded to fit the
dimensions of the page to be merged.
.. deprecated:: 1.28.0
Use :meth:`add_transformation` and :meth:`merge_page` instead.
"""
deprecation_with_replacement(
"page.mergeRotatedScaledTranslatedPage(page2, rotation, tx, ty, expand)",
"page2.add_transformation(Transformation().rotate(rotation).scale(scale)); "
"page.merge_page(page2, expand)",
"3.0.0",
)
op = Transformation().rotate(rotation).scale(scale, scale).translate(tx, ty)
self.mergeTransformedPage(page2, op, expand)
[docs] def add_transformation(
self,
ctm: Union[Transformation, CompressedTransformationMatrix],
expand: bool = False,
) -> None:
"""
Apply a transformation matrix to the page.
Args:
ctm: A 6-element tuple containing the operands of the
transformation matrix. Alternatively, a
:py:class:`Transformation<pypdf.Transformation>`
object can be passed.
See :doc:`/user/cropping-and-transforming`.
"""
if isinstance(ctm, Transformation):
ctm = ctm.ctm
content = self.get_contents()
if content is not None:
content = PageObject._add_transformation_matrix(content, self.pdf, ctm)
content = PageObject._push_pop_gs(content, self.pdf)
self[NameObject(PG.CONTENTS)] = content
# if expanding the page to fit a new page, calculate the new media box size
if expand:
corners = [
self.mediabox.left.as_numeric(),
self.mediabox.bottom.as_numeric(),
self.mediabox.left.as_numeric(),
self.mediabox.top.as_numeric(),
self.mediabox.right.as_numeric(),
self.mediabox.top.as_numeric(),
self.mediabox.right.as_numeric(),
self.mediabox.bottom.as_numeric(),
]
ctm = tuple(float(x) for x in ctm) # type: ignore[assignment]
new_x = [
ctm[0] * corners[i] + ctm[2] * corners[i + 1] + ctm[4]
for i in range(0, 8, 2)
]
new_y = [
ctm[1] * corners[i] + ctm[3] * corners[i + 1] + ctm[5]
for i in range(0, 8, 2)
]
lowerleft = (min(new_x), min(new_y))
upperright = (max(new_x), max(new_y))
lowerleft = (min(corners[0], lowerleft[0]), min(corners[1], lowerleft[1]))
upperright = (
max(corners[2], upperright[0]),
max(corners[3], upperright[1]),
)
self.mediabox.lower_left = lowerleft
self.mediabox.upper_right = upperright
[docs] def addTransformation(
self, ctm: CompressedTransformationMatrix
) -> None: # deprecated
"""
Use :meth:`add_transformation` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("addTransformation", "add_transformation", "3.0.0")
self.add_transformation(ctm)
[docs] def scale(self, sx: float, sy: float) -> None:
"""
Scale a page by the given factors by applying a transformation matrix
to its content and updating the page size.
This updates the mediabox, the cropbox, and the contents
of the page.
Args:
sx: The scaling factor on horizontal axis.
sy: The scaling factor on vertical axis.
"""
self.add_transformation((sx, 0, 0, sy, 0, 0))
self.cropbox = self.cropbox.scale(sx, sy)
self.artbox = self.artbox.scale(sx, sy)
self.bleedbox = self.bleedbox.scale(sx, sy)
self.trimbox = self.trimbox.scale(sx, sy)
self.mediabox = self.mediabox.scale(sx, sy)
if PG.ANNOTS in self:
annotations = self[PG.ANNOTS]
if isinstance(annotations, ArrayObject):
for annotation in annotations:
annotation_obj = annotation.get_object()
if ADA.Rect in annotation_obj:
rectangle = annotation_obj[ADA.Rect]
if isinstance(rectangle, ArrayObject):
rectangle[0] = FloatObject(float(rectangle[0]) * sx)
rectangle[1] = FloatObject(float(rectangle[1]) * sy)
rectangle[2] = FloatObject(float(rectangle[2]) * sx)
rectangle[3] = FloatObject(float(rectangle[3]) * sy)
if PG.VP in self:
viewport = self[PG.VP]
if isinstance(viewport, ArrayObject):
bbox = viewport[0]["/BBox"]
else:
bbox = viewport["/BBox"] # type: ignore
scaled_bbox = RectangleObject(
(
float(bbox[0]) * sx,
float(bbox[1]) * sy,
float(bbox[2]) * sx,
float(bbox[3]) * sy,
)
)
if isinstance(viewport, ArrayObject):
self[NameObject(PG.VP)][NumberObject(0)][ # type: ignore
NameObject("/BBox")
] = scaled_bbox
else:
self[NameObject(PG.VP)][NameObject("/BBox")] = scaled_bbox # type: ignore
[docs] def scale_by(self, factor: float) -> None:
"""
Scale a page by the given factor by applying a transformation matrix to
its content and updating the page size.
Args:
factor: The scaling factor (for both X and Y axis).
"""
self.scale(factor, factor)
[docs] def scaleBy(self, factor: float) -> None: # deprecated
"""
Use :meth:`scale_by` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("scaleBy", "scale_by", "3.0.0")
self.scale(factor, factor)
[docs] def scale_to(self, width: float, height: float) -> None:
"""
Scale a page to the specified dimensions by applying a transformation
matrix to its content and updating the page size.
Args:
width: The new width.
height: The new height.
"""
sx = width / float(self.mediabox.width)
sy = height / float(self.mediabox.height)
self.scale(sx, sy)
[docs] def scaleTo(self, width: float, height: float) -> None: # deprecated
"""
Use :meth:`scale_to` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("scaleTo", "scale_to", "3.0.0")
self.scale_to(width, height)
[docs] def compress_content_streams(self) -> None:
"""
Compress the size of this page by joining all content streams and
applying a FlateDecode filter.
However, it is possible that this function will perform no action if
content stream compression becomes "automatic".
"""
content = self.get_contents()
if content is not None:
content_obj: Any
if not isinstance(content, ContentStream):
content_obj = ContentStream(content, self.pdf)
else:
content_obj = content
content_obj = content_obj.flate_encode()
try:
content.indirect_reference.pdf._objects[ # type: ignore
content.indirect_reference.idnum - 1 # type: ignore
] = content_obj
except AttributeError:
if self.indirect_reference is not None and hasattr(
self.indirect_reference.pdf, "_add_object"
):
self[
NameObject(PG.CONTENTS)
] = self.indirect_reference.pdf._add_object(content_obj)
else:
raise ValueError("Page must be part of a PdfWriter")
[docs] def compressContentStreams(self) -> None: # deprecated
"""
Use :meth:`compress_content_streams` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement(
"compressContentStreams", "compress_content_streams", "3.0.0"
)
self.compress_content_streams()
def _debug_for_extract(self) -> str: # pragma: no cover
out = ""
for ope, op in ContentStream(
self["/Contents"].get_object(), self.pdf, "bytes"
).operations:
if op == b"TJ":
s = [x for x in ope[0] if isinstance(x, str)]
else:
s = []
out += op.decode("utf-8") + " " + "".join(s) + ope.__repr__() + "\n"
out += "\n=============================\n"
try:
for fo in self[PG.RESOURCES]["/Font"]: # type:ignore
out += fo + "\n"
out += self[PG.RESOURCES]["/Font"][fo].__repr__() + "\n" # type:ignore
try:
enc_repr = self[PG.RESOURCES]["/Font"][fo][ # type:ignore
"/Encoding"
].__repr__()
out += enc_repr + "\n"
except Exception:
pass
try:
out += (
self[PG.RESOURCES]["/Font"][fo][ # type:ignore
"/ToUnicode"
]
.get_data()
.decode()
+ "\n"
)
except Exception:
pass
except KeyError:
out += "No Font\n"
return out
def _extract_text(
self,
obj: Any,
pdf: Any,
orientations: Tuple[int, ...] = (0, 90, 180, 270),
space_width: float = 200.0,
content_key: Optional[str] = PG.CONTENTS,
visitor_operand_before: Optional[Callable[[Any, Any, Any, Any], None]] = None,
visitor_operand_after: Optional[Callable[[Any, Any, Any, Any], None]] = None,
visitor_text: Optional[Callable[[Any, Any, Any, Any, Any], None]] = None,
) -> str:
"""
See extract_text for most arguments.
Args:
content_key: indicate the default key where to extract data
None = the object; this allow to reuse the function on XObject
default = "/Content"
"""
text: str = ""
output: str = ""
rtl_dir: bool = False # right-to-left
cmaps: Dict[
str,
Tuple[
str, float, Union[str, Dict[int, str]], Dict[str, str], DictionaryObject
],
] = {}
try:
objr = obj
while NameObject(PG.RESOURCES) not in objr:
# /Resources can be inherited sometimes so we look to parents
objr = objr["/Parent"].get_object()
# if no parents we will have no /Resources will be available
# => an exception wil be raised
resources_dict = cast(DictionaryObject, objr[PG.RESOURCES])
except Exception:
# no resources means no text is possible (no font) we consider the
# file as not damaged, no need to check for TJ or Tj
return ""
if "/Font" in resources_dict:
for f in cast(DictionaryObject, resources_dict["/Font"]):
cmaps[f] = build_char_map(f, space_width, obj)
cmap: Tuple[
Union[str, Dict[int, str]], Dict[str, str], str, Optional[DictionaryObject]
] = (
"charmap",
{},
"NotInitialized",
None,
) # (encoding,CMAP,font resource name,dictionary-object of font)
try:
content = (
obj[content_key].get_object() if isinstance(content_key, str) else obj
)
if not isinstance(content, ContentStream):
content = ContentStream(content, pdf, "bytes")
except KeyError: # it means no content can be extracted(certainly empty page)
return ""
# Note: we check all strings are TextStringObjects. ByteStringObjects
# are strings where the byte->string encoding was unknown, so adding
# them to the text here would be gibberish.
cm_matrix: List[float] = [1.0, 0.0, 0.0, 1.0, 0.0, 0.0]
cm_stack = []
tm_matrix: List[float] = [1.0, 0.0, 0.0, 1.0, 0.0, 0.0]
tm_prev: List[float] = [
1.0,
0.0,
0.0,
1.0,
0.0,
0.0,
] # will store cm_matrix * tm_matrix
char_scale = 1.0
space_scale = 1.0
_space_width: float = 500.0 # will be set correctly at first Tf
TL = 0.0
font_size = 12.0 # init just in case of
def current_spacewidth() -> float:
return _space_width / 1000.0
def process_operation(operator: bytes, operands: List) -> None:
nonlocal cm_matrix, cm_stack, tm_matrix, tm_prev, output, text
nonlocal char_scale, space_scale, _space_width, TL, font_size, cmap
nonlocal orientations, rtl_dir, visitor_text
global CUSTOM_RTL_MIN, CUSTOM_RTL_MAX, CUSTOM_RTL_SPECIAL_CHARS
check_crlf_space: bool = False
# Table 5.4 page 405
if operator == b"BT":
tm_matrix = [1.0, 0.0, 0.0, 1.0, 0.0, 0.0]
output += text
if visitor_text is not None:
visitor_text(text, cm_matrix, tm_matrix, cmap[3], font_size)
text = ""
return None
elif operator == b"ET":
output += text
if visitor_text is not None:
visitor_text(text, cm_matrix, tm_matrix, cmap[3], font_size)
text = ""
# table 4.7 "Graphics state operators", page 219
# cm_matrix calculation is a reserved for the moment
elif operator == b"q":
cm_stack.append(
(
cm_matrix,
cmap,
font_size,
char_scale,
space_scale,
_space_width,
TL,
)
)
elif operator == b"Q":
try:
(
cm_matrix,
cmap,
font_size,
char_scale,
space_scale,
_space_width,
TL,
) = cm_stack.pop()
except Exception:
cm_matrix = [1.0, 0.0, 0.0, 1.0, 0.0, 0.0]
elif operator == b"cm":
output += text
if visitor_text is not None:
visitor_text(text, cm_matrix, tm_matrix, cmap[3], font_size)
text = ""
cm_matrix = mult(
[
float(operands[0]),
float(operands[1]),
float(operands[2]),
float(operands[3]),
float(operands[4]),
float(operands[5]),
],
cm_matrix,
)
# Table 5.2 page 398
elif operator == b"Tz":
char_scale = float(operands[0]) / 100.0
elif operator == b"Tw":
space_scale = 1.0 + float(operands[0])
elif operator == b"TL":
TL = float(operands[0])
elif operator == b"Tf":
if text != "":
output += text # .translate(cmap)
if visitor_text is not None:
visitor_text(text, cm_matrix, tm_matrix, cmap[3], font_size)
text = ""
try:
# charMapTuple: font_type, float(sp_width / 2), encoding,
# map_dict, font-dictionary
charMapTuple = cmaps[operands[0]]
_space_width = charMapTuple[1]
# current cmap: encoding, map_dict, font resource name
# (internal name, not the real font-name),
# font-dictionary. The font-dictionary describes the font.
cmap = (
charMapTuple[2],
charMapTuple[3],
operands[0],
charMapTuple[4],
)
except KeyError: # font not found
_space_width = unknown_char_map[1]
cmap = (
unknown_char_map[2],
unknown_char_map[3],
"???" + operands[0],
None,
)
try:
font_size = float(operands[1])
except Exception:
pass # keep previous size
# Table 5.5 page 406
elif operator == b"Td":
check_crlf_space = True
# A special case is a translating only tm:
# tm[0..5] = 1 0 0 1 e f,
# i.e. tm[4] += tx, tm[5] += ty.
tx = float(operands[0])
ty = float(operands[1])
tm_matrix[4] += tx * tm_matrix[0] + ty * tm_matrix[2]
tm_matrix[5] += tx * tm_matrix[1] + ty * tm_matrix[3]
elif operator == b"Tm":
check_crlf_space = True
tm_matrix = [
float(operands[0]),
float(operands[1]),
float(operands[2]),
float(operands[3]),
float(operands[4]),
float(operands[5]),
]
elif operator == b"T*":
check_crlf_space = True
tm_matrix[5] -= TL
elif operator == b"Tj":
check_crlf_space = True
text, rtl_dir = handle_tj(
text,
operands,
cm_matrix,
tm_matrix, # text matrix
cmap,
orientations,
output,
font_size,
rtl_dir,
visitor_text,
)
else:
return None
if check_crlf_space:
try:
text, output, tm_prev = crlf_space_check(
text,
tm_prev,
cm_matrix,
tm_matrix,
cmap,
orientations,
output,
font_size,
visitor_text,
current_spacewidth(),
)
except OrientationNotFoundError:
return None
for operands, operator in content.operations:
if visitor_operand_before is not None:
visitor_operand_before(operator, operands, cm_matrix, tm_matrix)
# multiple operators are defined in here ####
if operator == b"'":
process_operation(b"T*", [])
process_operation(b"Tj", operands)
elif operator == b'"':
process_operation(b"Tw", [operands[0]])
process_operation(b"Tc", [operands[1]])
process_operation(b"T*", [])
process_operation(b"Tj", operands[2:])
elif operator == b"TD":
process_operation(b"TL", [-operands[1]])
process_operation(b"Td", operands)
elif operator == b"TJ":
for op in operands[0]:
if isinstance(op, (str, bytes)):
process_operation(b"Tj", [op])
if isinstance(op, (int, float, NumberObject, FloatObject)) and (
(abs(float(op)) >= _space_width)
and (len(text) > 0)
and (text[-1] != " ")
):
process_operation(b"Tj", [" "])
elif operator == b"Do":
output += text
if visitor_text is not None:
visitor_text(text, cm_matrix, tm_matrix, cmap[3], font_size)
try:
if output[-1] != "\n":
output += "\n"
if visitor_text is not None:
visitor_text("\n", cm_matrix, tm_matrix, cmap[3], font_size)
except IndexError:
pass
try:
xobj = resources_dict["/XObject"]
if xobj[operands[0]]["/Subtype"] != "/Image": # type: ignore
text = self.extract_xform_text(
xobj[operands[0]], # type: ignore
orientations,
space_width,
visitor_operand_before,
visitor_operand_after,
visitor_text,
)
output += text
if visitor_text is not None:
visitor_text(text, cm_matrix, tm_matrix, cmap[3], font_size)
except Exception:
logger_warning(
f" impossible to decode XFormObject {operands[0]}",
__name__,
)
finally:
text = ""
else:
process_operation(operator, operands)
if visitor_operand_after is not None:
visitor_operand_after(operator, operands, cm_matrix, tm_matrix)
output += text # just in case of
if text != "" and visitor_text is not None:
visitor_text(text, cm_matrix, tm_matrix, cmap[3], font_size)
return output
def _get_fonts(self) -> Tuple[Set[str], Set[str]]:
"""
Get the names of embedded fonts and unembedded fonts.
Returns:
A tuple (Set of embedded fonts, set of unembedded fonts)
"""
obj = self.get_object()
assert isinstance(obj, DictionaryObject)
fonts, embedded = _get_fonts_walk(cast(DictionaryObject, obj[PG.RESOURCES]))
unembedded = fonts - embedded
return embedded, unembedded
mediabox = _create_rectangle_accessor(PG.MEDIABOX, ())
"""A :class:`RectangleObject<pypdf.generic.RectangleObject>`, expressed in
default user space units, defining the boundaries of the physical medium on
which the page is intended to be displayed or printed."""
@property
def mediaBox(self) -> RectangleObject: # deprecated
"""
Use :py:attr:`mediabox` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("mediaBox", "mediabox", "3.0.0")
return self.mediabox
@mediaBox.setter
def mediaBox(self, value: RectangleObject) -> None: # deprecated
"""
Use :py:attr:`mediabox` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("mediaBox", "mediabox", "3.0.0")
self.mediabox = value
cropbox = _create_rectangle_accessor("/CropBox", (PG.MEDIABOX,))
"""
A :class:`RectangleObject<pypdf.generic.RectangleObject>`, expressed in
default user space units, defining the visible region of default user
space.
When the page is displayed or printed, its contents are to be clipped
(cropped) to this rectangle and then imposed on the output medium in some
implementation-defined manner. Default value: same as
:attr:`mediabox<mediabox>`.
"""
@property
def cropBox(self) -> RectangleObject: # deprecated
"""
Use :py:attr:`cropbox` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("cropBox", "cropbox", "3.0.0")
return self.cropbox
@cropBox.setter
def cropBox(self, value: RectangleObject) -> None: # deprecated
deprecation_with_replacement("cropBox", "cropbox", "3.0.0")
self.cropbox = value
bleedbox = _create_rectangle_accessor("/BleedBox", ("/CropBox", PG.MEDIABOX))
"""A :class:`RectangleObject<pypdf.generic.RectangleObject>`, expressed in
default user space units, defining the region to which the contents of the
page should be clipped when output in a production environment."""
@property
def bleedBox(self) -> RectangleObject: # deprecated
"""
Use :py:attr:`bleedbox` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("bleedBox", "bleedbox", "3.0.0")
return self.bleedbox
@bleedBox.setter
def bleedBox(self, value: RectangleObject) -> None: # deprecated
deprecation_with_replacement("bleedBox", "bleedbox", "3.0.0")
self.bleedbox = value
trimbox = _create_rectangle_accessor("/TrimBox", ("/CropBox", PG.MEDIABOX))
"""A :class:`RectangleObject<pypdf.generic.RectangleObject>`, expressed in
default user space units, defining the intended dimensions of the finished
page after trimming."""
@property
def trimBox(self) -> RectangleObject: # deprecated
"""
Use :py:attr:`trimbox` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("trimBox", "trimbox", "3.0.0")
return self.trimbox
@trimBox.setter
def trimBox(self, value: RectangleObject) -> None: # deprecated
deprecation_with_replacement("trimBox", "trimbox", "3.0.0")
self.trimbox = value
artbox = _create_rectangle_accessor("/ArtBox", ("/CropBox", PG.MEDIABOX))
"""A :class:`RectangleObject<pypdf.generic.RectangleObject>`, expressed in
default user space units, defining the extent of the page's meaningful
content as intended by the page's creator."""
@property
def artBox(self) -> RectangleObject: # deprecated
"""
Use :py:attr:`artbox` instead.
.. deprecated:: 1.28.0
"""
deprecation_with_replacement("artBox", "artbox", "3.0.0")
return self.artbox
@artBox.setter
def artBox(self, value: RectangleObject) -> None: # deprecated
deprecation_with_replacement("artBox", "artbox", "3.0.0")
self.artbox = value
@property
def annotations(self) -> Optional[ArrayObject]:
if "/Annots" not in self:
return None
else:
return cast(ArrayObject, self["/Annots"])
@annotations.setter
def annotations(self, value: Optional[ArrayObject]) -> None:
"""
Set the annotations array of the page.
Typically you don't want to set this value, but append to it.
If you append to it, don't forget to add the object first to the writer
and only add the indirect object.
"""
if value is None:
del self[NameObject("/Annots")]
else:
self[NameObject("/Annots")] = value
class _VirtualList(Sequence):
def __init__(
self,
length_function: Callable[[], int],
get_function: Callable[[int], PageObject],
) -> None:
self.length_function = length_function
self.get_function = get_function
self.current = -1
def __len__(self) -> int:
return self.length_function()
@overload
def __getitem__(self, index: int) -> PageObject:
...
@overload
def __getitem__(self, index: slice) -> Sequence[PageObject]:
...
def __getitem__(
self, index: Union[int, slice]
) -> Union[PageObject, Sequence[PageObject]]:
if isinstance(index, slice):
indices = range(*index.indices(len(self)))
cls = type(self)
return cls(indices.__len__, lambda idx: self[indices[idx]])
if not isinstance(index, int):
raise TypeError("sequence indices must be integers")
len_self = len(self)
if index < 0:
# support negative indexes
index = len_self + index
if index < 0 or index >= len_self:
raise IndexError("sequence index out of range")
return self.get_function(index)
def __iter__(self) -> Iterator[PageObject]:
for i in range(len(self)):
yield self[i]
def __str__(self) -> str:
p = [f"PageObject({i})" for i in range(self.length_function())]
return f"[{', '.join(p)}]"
def _get_fonts_walk(
obj: DictionaryObject,
fnt: Optional[Set[str]] = None,
emb: Optional[Set[str]] = None,
) -> Tuple[Set[str], Set[str]]:
"""
Get the set of all fonts and all embedded fonts.
Args:
obj: Page resources dictionary
fnt: font
emb: embedded fonts
Returns:
A tuple (fnt, emb)
If there is a key called 'BaseFont', that is a font that is used in the document.
If there is a key called 'FontName' and another key in the same dictionary object
that is called 'FontFilex' (where x is null, 2, or 3), then that fontname is
embedded.
We create and add to two sets, fnt = fonts used and emb = fonts embedded.
"""
if fnt is None:
fnt = set()
if emb is None:
emb = set()
if not hasattr(obj, "keys"):
return set(), set()
fontkeys = ("/FontFile", "/FontFile2", "/FontFile3")
if "/BaseFont" in obj:
fnt.add(cast(str, obj["/BaseFont"]))
if "/FontName" in obj and [x for x in fontkeys if x in obj]:
# the list comprehension ensures there is FontFile
emb.add(cast(str, obj["/FontName"]))
for key in obj:
_get_fonts_walk(cast(DictionaryObject, obj[key]), fnt, emb)
return fnt, emb # return the sets for each page