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Update ashboard, dashboard, memory +1 more (+2 ~3)

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Echo
2026-02-02 22:27:24 +00:00
parent 4f00131184
commit b0c9b254f1
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venv/lib/python3.12/site-packages/pypdf/constants.py Normal file
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"""Various constants, enums, and flags to aid readability."""
from enum import Enum, IntFlag, auto, unique
class StrEnum(str, Enum): # Once we are on Python 3.11+: enum.StrEnum
def __str__(self) -> str:
return str(self.value)
class Core:
"""Keywords that don't quite belong anywhere else."""
OUTLINES = "/Outlines"
THREADS = "/Threads"
PAGE = "/Page"
PAGES = "/Pages"
CATALOG = "/Catalog"
class TrailerKeys:
SIZE = "/Size"
PREV = "/Prev"
ROOT = "/Root"
ENCRYPT = "/Encrypt"
INFO = "/Info"
ID = "/ID"
class CatalogAttributes:
NAMES = "/Names"
DESTS = "/Dests"
class EncryptionDictAttributes:
"""
Additional encryption dictionary entries for the standard security handler.
Table 3.19, Page 122.
Table 21 of the 2.0 manual.
"""
R = "/R" # number, required; revision of the standard security handler
O = "/O" # 32-byte string, required # noqa: E741
U = "/U" # 32-byte string, required
P = "/P" # integer flag, required; permitted operations
ENCRYPT_METADATA = "/EncryptMetadata" # boolean flag, optional
class UserAccessPermissions(IntFlag):
"""
Table 3.20 User access permissions.
Table 22 of the 2.0 manual.
"""
R1 = 1
R2 = 2
PRINT = 4
MODIFY = 8
EXTRACT = 16
ADD_OR_MODIFY = 32
R7 = 64
R8 = 128
FILL_FORM_FIELDS = 256
EXTRACT_TEXT_AND_GRAPHICS = 512
ASSEMBLE_DOC = 1024
PRINT_TO_REPRESENTATION = 2048
R13 = 2**12
R14 = 2**13
R15 = 2**14
R16 = 2**15
R17 = 2**16
R18 = 2**17
R19 = 2**18
R20 = 2**19
R21 = 2**20
R22 = 2**21
R23 = 2**22
R24 = 2**23
R25 = 2**24
R26 = 2**25
R27 = 2**26
R28 = 2**27
R29 = 2**28
R30 = 2**29
R31 = 2**30
R32 = 2**31
@classmethod
def _is_reserved(cls, name: str) -> bool:
"""Check if the given name corresponds to a reserved flag entry."""
return name.startswith("R") and name[1:].isdigit()
@classmethod
def _is_active(cls, name: str) -> bool:
"""Check if the given reserved name defaults to 1 = active."""
return name not in {"R1", "R2"}
def to_dict(self) -> dict[str, bool]:
"""Convert the given flag value to a corresponding verbose name mapping."""
result: dict[str, bool] = {}
for name, flag in UserAccessPermissions.__members__.items():
if UserAccessPermissions._is_reserved(name):
continue
result[name.lower()] = (self & flag) == flag
return result
@classmethod
def from_dict(cls, value: dict[str, bool]) -> "UserAccessPermissions":
"""Convert the verbose name mapping to the corresponding flag value."""
value_copy = value.copy()
result = cls(0)
for name, flag in cls.__members__.items():
if cls._is_reserved(name):
# Reserved names have a required value. Use it.
if cls._is_active(name):
result |= flag
continue
is_active = value_copy.pop(name.lower(), False)
if is_active:
result |= flag
if value_copy:
raise ValueError(f"Unknown dictionary keys: {value_copy!r}")
return result
@classmethod
def all(cls) -> "UserAccessPermissions":
return cls((2**32 - 1) - cls.R1 - cls.R2)
class Resources:
"""
Table 3.30 Entries in a resource dictionary.
Table 34 in the 2.0 reference.
"""
EXT_G_STATE = "/ExtGState" # dictionary, optional
COLOR_SPACE = "/ColorSpace" # dictionary, optional
PATTERN = "/Pattern" # dictionary, optional
SHADING = "/Shading" # dictionary, optional
XOBJECT = "/XObject" # dictionary, optional
FONT = "/Font" # dictionary, optional
PROC_SET = "/ProcSet" # array, optional
PROPERTIES = "/Properties" # dictionary, optional
class PagesAttributes:
"""§7.7.3.2 of the 1.7 and 2.0 reference."""
TYPE = "/Type" # name, required; must be /Pages
PARENT = "/Parent" # dictionary, required; indirect reference to pages object
KIDS = "/Kids" # array, required; List of indirect references
COUNT = "/Count"
# integer, required; the number of leaf nodes (page objects)
# that are descendants of this node within the page tree
class PageAttributes:
"""§7.7.3.3 of the 1.7 and 2.0 reference."""
TYPE = "/Type" # name, required; must be /Page
PARENT = "/Parent" # dictionary, required; a pages object
LAST_MODIFIED = (
"/LastModified" # date, optional; date and time of last modification
)
RESOURCES = "/Resources" # dictionary, required if there are any
MEDIABOX = "/MediaBox" # rectangle, required; rectangle specifying page size
CROPBOX = "/CropBox" # rectangle, optional
BLEEDBOX = "/BleedBox" # rectangle, optional
TRIMBOX = "/TrimBox" # rectangle, optional
ARTBOX = "/ArtBox" # rectangle, optional
BOX_COLOR_INFO = "/BoxColorInfo" # dictionary, optional
CONTENTS = "/Contents" # stream or array, optional
ROTATE = "/Rotate" # integer, optional; page rotation in degrees
GROUP = "/Group" # dictionary, optional; page group
THUMB = "/Thumb" # stream, optional; indirect reference to image of the page
B = "/B" # array, optional
DUR = "/Dur" # number, optional
TRANS = "/Trans" # dictionary, optional
ANNOTS = "/Annots" # array, optional; an array of annotations
AA = "/AA" # dictionary, optional
METADATA = "/Metadata" # stream, optional
PIECE_INFO = "/PieceInfo" # dictionary, optional
STRUCT_PARENTS = "/StructParents" # integer, optional
ID = "/ID" # byte string, optional
PZ = "/PZ" # number, optional
SEPARATION_INFO = "/SeparationInfo" # dictionary, optional
TABS = "/Tabs" # name, optional
TEMPLATE_INSTANTIATED = "/TemplateInstantiated" # name, optional
PRES_STEPS = "/PresSteps" # dictionary, optional
USER_UNIT = "/UserUnit" # number, optional
VP = "/VP" # dictionary, optional
AF = "/AF" # array of dictionaries, optional
OUTPUT_INTENTS = "/OutputIntents" # array, optional
D_PART = "/DPart" # dictionary, required, if this page is within the range of a DPart, not permitted otherwise
class FileSpecificationDictionaryEntries:
"""Table 3.41 Entries in a file specification dictionary."""
Type = "/Type"
FS = "/FS" # The name of the file system to be used to interpret this file specification
F = "/F" # A file specification string of the form described in §3.10.1
UF = "/UF" # A Unicode string of the file as described in §3.10.1
DOS = "/DOS"
Mac = "/Mac"
Unix = "/Unix"
ID = "/ID"
V = "/V"
EF = "/EF" # dictionary, containing a subset of the keys F, UF, DOS, Mac, and Unix
RF = "/RF" # dictionary, containing arrays of /EmbeddedFile
DESC = "/Desc" # description of the file
Cl = "/Cl"
class StreamAttributes:
"""
Table 4.2.
Table 5 in the 2.0 reference.
"""
LENGTH = "/Length" # integer, required
FILTER = "/Filter" # name or array of names, optional
DECODE_PARMS = "/DecodeParms" # variable, optional -- 'decodeParams is wrong
@unique
class FilterTypes(StrEnum):
"""§7.4 of the 1.7 and 2.0 references."""
ASCII_HEX_DECODE = "/ASCIIHexDecode" # abbreviation: AHx
ASCII_85_DECODE = "/ASCII85Decode" # abbreviation: A85
LZW_DECODE = "/LZWDecode" # abbreviation: LZW
FLATE_DECODE = "/FlateDecode" # abbreviation: Fl
RUN_LENGTH_DECODE = "/RunLengthDecode" # abbreviation: RL
CCITT_FAX_DECODE = "/CCITTFaxDecode" # abbreviation: CCF
DCT_DECODE = "/DCTDecode" # abbreviation: DCT
JPX_DECODE = "/JPXDecode"
JBIG2_DECODE = "/JBIG2Decode"
class FilterTypeAbbreviations:
"""§8.9.7 of the 1.7 and 2.0 references."""
AHx = "/AHx"
A85 = "/A85"
LZW = "/LZW"
FL = "/Fl"
RL = "/RL"
CCF = "/CCF"
DCT = "/DCT"
class LzwFilterParameters:
"""
Table 4.4.
Table 8 in the 2.0 reference.
"""
PREDICTOR = "/Predictor" # integer
COLORS = "/Colors" # integer
BITS_PER_COMPONENT = "/BitsPerComponent" # integer
COLUMNS = "/Columns" # integer
EARLY_CHANGE = "/EarlyChange" # integer
class CcittFaxDecodeParameters:
"""
Table 4.5.
Table 11 in the 2.0 reference.
"""
K = "/K" # integer
END_OF_LINE = "/EndOfLine" # boolean
ENCODED_BYTE_ALIGN = "/EncodedByteAlign" # boolean
COLUMNS = "/Columns" # integer
ROWS = "/Rows" # integer
END_OF_BLOCK = "/EndOfBlock" # boolean
BLACK_IS_1 = "/BlackIs1" # boolean
DAMAGED_ROWS_BEFORE_ERROR = "/DamagedRowsBeforeError" # integer
class ImageAttributes:
"""§11.6.5 of the 1.7 and 2.0 references."""
TYPE = "/Type" # name, required; must be /XObject
SUBTYPE = "/Subtype" # name, required; must be /Image
NAME = "/Name" # name, required
WIDTH = "/Width" # integer, required
HEIGHT = "/Height" # integer, required
BITS_PER_COMPONENT = "/BitsPerComponent" # integer, required
COLOR_SPACE = "/ColorSpace" # name, required
DECODE = "/Decode" # array, optional
INTENT = "/Intent" # string, optional
INTERPOLATE = "/Interpolate" # boolean, optional
IMAGE_MASK = "/ImageMask" # boolean, optional
MASK = "/Mask" # 1-bit image mask stream
S_MASK = "/SMask" # dictionary or name, optional
class ColorSpaces:
DEVICE_RGB = "/DeviceRGB"
DEVICE_CMYK = "/DeviceCMYK"
DEVICE_GRAY = "/DeviceGray"
class TypArguments:
"""Table 8.2 of the PDF 1.7 reference."""
LEFT = "/Left"
RIGHT = "/Right"
BOTTOM = "/Bottom"
TOP = "/Top"
class TypFitArguments:
"""Table 8.2 of the PDF 1.7 reference."""
XYZ = "/XYZ"
FIT = "/Fit"
FIT_H = "/FitH"
FIT_V = "/FitV"
FIT_R = "/FitR"
FIT_B = "/FitB"
FIT_BH = "/FitBH"
FIT_BV = "/FitBV"
class GoToActionArguments:
S = "/S" # name, required: type of action
D = "/D" # name, byte string, or array, required: destination to jump to
SD = "/SD" # array, optional: structure destination to jump to
class AnnotationDictionaryAttributes:
"""Table 8.15 Entries common to all annotation dictionaries."""
Type = "/Type"
Subtype = "/Subtype"
Rect = "/Rect"
Contents = "/Contents"
P = "/P"
NM = "/NM"
M = "/M"
F = "/F"
AP = "/AP"
AS = "/AS"
DA = "/DA"
Border = "/Border"
C = "/C"
StructParent = "/StructParent"
OC = "/OC"
class InteractiveFormDictEntries:
Fields = "/Fields"
NeedAppearances = "/NeedAppearances"
SigFlags = "/SigFlags"
CO = "/CO"
DR = "/DR"
DA = "/DA"
Q = "/Q"
XFA = "/XFA"
class FieldDictionaryAttributes:
"""
Entries common to all field dictionaries (Table 8.69 PDF 1.7 reference)
(*very partially documented here*).
FFBits provides the constants used for `/Ff` from Table 8.70/8.75/8.77/8.79
"""
FT = "/FT" # name, required for terminal fields
Parent = "/Parent" # dictionary, required for children
Kids = "/Kids" # array, sometimes required
T = "/T" # text string, optional
TU = "/TU" # text string, optional
TM = "/TM" # text string, optional
Ff = "/Ff" # integer, optional
V = "/V" # text string or array, optional
DV = "/DV" # text string, optional
AA = "/AA" # dictionary, optional
Opt = "/Opt" # array, optional
class FfBits(IntFlag):
"""
Ease building /Ff flags
Some entries may be specific to:
* Text (Tx) (Table 8.75 PDF 1.7 reference)
* Buttons (Btn) (Table 8.77 PDF 1.7 reference)
* Choice (Ch) (Table 8.79 PDF 1.7 reference)
"""
ReadOnly = 1 << 0
"""common to Tx/Btn/Ch in Table 8.70"""
Required = 1 << 1
"""common to Tx/Btn/Ch in Table 8.70"""
NoExport = 1 << 2
"""common to Tx/Btn/Ch in Table 8.70"""
Multiline = 1 << 12
"""Tx"""
Password = 1 << 13
"""Tx"""
NoToggleToOff = 1 << 14
"""Btn"""
Radio = 1 << 15
"""Btn"""
Pushbutton = 1 << 16
"""Btn"""
Combo = 1 << 17
"""Ch"""
Edit = 1 << 18
"""Ch"""
Sort = 1 << 19
"""Ch"""
FileSelect = 1 << 20
"""Tx"""
MultiSelect = 1 << 21
"""Tx"""
DoNotSpellCheck = 1 << 22
"""Tx/Ch"""
DoNotScroll = 1 << 23
"""Tx"""
Comb = 1 << 24
"""Tx"""
RadiosInUnison = 1 << 25
"""Btn"""
RichText = 1 << 25
"""Tx"""
CommitOnSelChange = 1 << 26
"""Ch"""
@classmethod
def attributes(cls) -> tuple[str, ...]:
"""
Get a tuple of all the attributes present in a Field Dictionary.
This method returns a tuple of all the attribute constants defined in
the FieldDictionaryAttributes class. These attributes correspond to the
entries that are common to all field dictionaries as specified in the
PDF 1.7 reference.
Returns:
A tuple containing all the attribute constants.
"""
return (
cls.TM,
cls.T,
cls.FT,
cls.Parent,
cls.TU,
cls.Ff,
cls.V,
cls.DV,
cls.Kids,
cls.AA,
)
@classmethod
def attributes_dict(cls) -> dict[str, str]:
"""
Get a dictionary of attribute keys and their human-readable names.
This method returns a dictionary where the keys are the attribute
constants defined in the FieldDictionaryAttributes class and the values
are their corresponding human-readable names. These attributes
correspond to the entries that are common to all field dictionaries as
specified in the PDF 1.7 reference.
Returns:
A dictionary containing attribute keys and their names.
"""
return {
cls.FT: "Field Type",
cls.Parent: "Parent",
cls.T: "Field Name",
cls.TU: "Alternate Field Name",
cls.TM: "Mapping Name",
cls.Ff: "Field Flags",
cls.V: "Value",
cls.DV: "Default Value",
}
class CheckboxRadioButtonAttributes:
"""Table 8.76 Field flags common to all field types."""
Opt = "/Opt" # Options, Optional
@classmethod
def attributes(cls) -> tuple[str, ...]:
"""
Get a tuple of all the attributes present in a Field Dictionary.
This method returns a tuple of all the attribute constants defined in
the CheckboxRadioButtonAttributes class. These attributes correspond to
the entries that are common to all field dictionaries as specified in
the PDF 1.7 reference.
Returns:
A tuple containing all the attribute constants.
"""
return (cls.Opt,)
@classmethod
def attributes_dict(cls) -> dict[str, str]:
"""
Get a dictionary of attribute keys and their human-readable names.
This method returns a dictionary where the keys are the attribute
constants defined in the CheckboxRadioButtonAttributes class and the
values are their corresponding human-readable names. These attributes
correspond to the entries that are common to all field dictionaries as
specified in the PDF 1.7 reference.
Returns:
A dictionary containing attribute keys and their names.
"""
return {
cls.Opt: "Options",
}
class FieldFlag(IntFlag):
"""Table 8.70 Field flags common to all field types."""
READ_ONLY = 1
REQUIRED = 2
NO_EXPORT = 4
class DocumentInformationAttributes:
"""Table 10.2 Entries in the document information dictionary."""
TITLE = "/Title" # text string, optional
AUTHOR = "/Author" # text string, optional
SUBJECT = "/Subject" # text string, optional
KEYWORDS = "/Keywords" # text string, optional
CREATOR = "/Creator" # text string, optional
PRODUCER = "/Producer" # text string, optional
CREATION_DATE = "/CreationDate" # date, optional
MOD_DATE = "/ModDate" # date, optional
TRAPPED = "/Trapped" # name, optional
class PageLayouts:
"""
Page 84, PDF 1.4 reference.
Page 115, PDF 2.0 reference.
"""
SINGLE_PAGE = "/SinglePage"
ONE_COLUMN = "/OneColumn"
TWO_COLUMN_LEFT = "/TwoColumnLeft"
TWO_COLUMN_RIGHT = "/TwoColumnRight"
TWO_PAGE_LEFT = "/TwoPageLeft" # (PDF 1.5)
TWO_PAGE_RIGHT = "/TwoPageRight" # (PDF 1.5)
class GraphicsStateParameters:
"""Table 58 – Entries in a Graphics State Parameter Dictionary"""
TYPE = "/Type" # name, optional
LW = "/LW" # number, optional
LC = "/LC" # integer, optional
LJ = "/LJ" # integer, optional
ML = "/ML" # number, optional
D = "/D" # array, optional
RI = "/RI" # name, optional
OP = "/OP"
op = "/op"
OPM = "/OPM"
FONT = "/Font" # array, optional
BG = "/BG"
BG2 = "/BG2"
UCR = "/UCR"
UCR2 = "/UCR2"
TR = "/TR"
TR2 = "/TR2"
HT = "/HT"
FL = "/FL"
SM = "/SM"
SA = "/SA"
BM = "/BM"
S_MASK = "/SMask" # dictionary or name, optional
CA = "/CA"
ca = "/ca"
AIS = "/AIS"
TK = "/TK"
class CatalogDictionary:
"""§7.7.2 of the 1.7 and 2.0 references."""
TYPE = "/Type" # name, required; must be /Catalog
VERSION = "/Version" # name
EXTENSIONS = "/Extensions" # dictionary, optional; ISO 32000-1
PAGES = "/Pages" # dictionary, required
PAGE_LABELS = "/PageLabels" # number tree, optional
NAMES = "/Names" # dictionary, optional
DESTS = "/Dests" # dictionary, optional
VIEWER_PREFERENCES = "/ViewerPreferences" # dictionary, optional
PAGE_LAYOUT = "/PageLayout" # name, optional
PAGE_MODE = "/PageMode" # name, optional
OUTLINES = "/Outlines" # dictionary, optional
THREADS = "/Threads" # array, optional
OPEN_ACTION = "/OpenAction" # array or dictionary or name, optional
AA = "/AA" # dictionary, optional
URI = "/URI" # dictionary, optional
ACRO_FORM = "/AcroForm" # dictionary, optional
METADATA = "/Metadata" # stream, optional
STRUCT_TREE_ROOT = "/StructTreeRoot" # dictionary, optional
MARK_INFO = "/MarkInfo" # dictionary, optional
LANG = "/Lang" # text string, optional
SPIDER_INFO = "/SpiderInfo" # dictionary, optional
OUTPUT_INTENTS = "/OutputIntents" # array, optional
PIECE_INFO = "/PieceInfo" # dictionary, optional
OC_PROPERTIES = "/OCProperties" # dictionary, optional
PERMS = "/Perms" # dictionary, optional
LEGAL = "/Legal" # dictionary, optional
REQUIREMENTS = "/Requirements" # array, optional
COLLECTION = "/Collection" # dictionary, optional
NEEDS_RENDERING = "/NeedsRendering" # boolean, optional
DSS = "/DSS" # dictionary, optional
AF = "/AF" # array of dictionaries, optional
D_PART_ROOT = "/DPartRoot" # dictionary, optional
class OutlineFontFlag(IntFlag):
"""A class used as an enumerable flag for formatting an outline font."""
italic = 1
bold = 2
class PageLabelStyle:
"""
Table 8.10 in the 1.7 reference.
Table 161 in the 2.0 reference.
"""
DECIMAL = "/D" # Decimal Arabic numerals
UPPERCASE_ROMAN = "/R" # Uppercase Roman numerals
LOWERCASE_ROMAN = "/r" # Lowercase Roman numerals
UPPERCASE_LETTER = "/A" # Uppercase letters
LOWERCASE_LETTER = "/a" # Lowercase letters
class AnnotationFlag(IntFlag):
"""See §12.5.3 "Annotation Flags"."""
INVISIBLE = 1
HIDDEN = 2
PRINT = 4
NO_ZOOM = 8
NO_ROTATE = 16
NO_VIEW = 32
READ_ONLY = 64
LOCKED = 128
TOGGLE_NO_VIEW = 256
LOCKED_CONTENTS = 512
PDF_KEYS = (
AnnotationDictionaryAttributes,
CatalogAttributes,
CatalogDictionary,
CcittFaxDecodeParameters,
CheckboxRadioButtonAttributes,
ColorSpaces,
Core,
DocumentInformationAttributes,
EncryptionDictAttributes,
FieldDictionaryAttributes,
FileSpecificationDictionaryEntries,
FilterTypeAbbreviations,
FilterTypes,
GoToActionArguments,
GraphicsStateParameters,
ImageAttributes,
InteractiveFormDictEntries,
LzwFilterParameters,
PageAttributes,
PageLayouts,
PagesAttributes,
Resources,
StreamAttributes,
TrailerKeys,
TypArguments,
TypFitArguments,
)
class ImageType(IntFlag):
NONE = 0
XOBJECT_IMAGES = auto()
INLINE_IMAGES = auto()
DRAWING_IMAGES = auto()
ALL = XOBJECT_IMAGES | INLINE_IMAGES | DRAWING_IMAGES
IMAGES = ALL # for consistency with ObjectDeletionFlag
_INLINE_IMAGE_VALUE_MAPPING = {
"/G": "/DeviceGray",
"/RGB": "/DeviceRGB",
"/CMYK": "/DeviceCMYK",
"/I": "/Indexed",
"/AHx": "/ASCIIHexDecode",
"/A85": "/ASCII85Decode",
"/LZW": "/LZWDecode",
"/Fl": "/FlateDecode",
"/RL": "/RunLengthDecode",
"/CCF": "/CCITTFaxDecode",
"/DCT": "/DCTDecode",
"/DeviceGray": "/DeviceGray",
"/DeviceRGB": "/DeviceRGB",
"/DeviceCMYK": "/DeviceCMYK",
"/Indexed": "/Indexed",
"/ASCIIHexDecode": "/ASCIIHexDecode",
"/ASCII85Decode": "/ASCII85Decode",
"/LZWDecode": "/LZWDecode",
"/FlateDecode": "/FlateDecode",
"/RunLengthDecode": "/RunLengthDecode",
"/CCITTFaxDecode": "/CCITTFaxDecode",
"/DCTDecode": "/DCTDecode",
"/RelativeColorimetric": "/RelativeColorimetric",
}
_INLINE_IMAGE_KEY_MAPPING = {
"/BPC": "/BitsPerComponent",
"/CS": "/ColorSpace",
"/D": "/Decode",
"/DP": "/DecodeParms",
"/F": "/Filter",
"/H": "/Height",
"/W": "/Width",
"/I": "/Interpolate",
"/Intent": "/Intent",
"/IM": "/ImageMask",
"/BitsPerComponent": "/BitsPerComponent",
"/ColorSpace": "/ColorSpace",
"/Decode": "/Decode",
"/DecodeParms": "/DecodeParms",
"/Filter": "/Filter",
"/Height": "/Height",
"/Width": "/Width",
"/Interpolate": "/Interpolate",
"/ImageMask": "/ImageMask",
}
class AFRelationship:
"""
Associated file relationship types, defining the relationship between
the PDF component and the associated file.
Defined in table 43 of the PDF 2.0 reference.
"""
SOURCE = "/Source" # Original content source
DATA = "/Data" # Base data for visual presentation
ALTERNATIVE = "/Alternative" # Alternative content representation
SUPPLEMENT = "/Supplement" # Supplemental representation of original source/data
ENCRYPTED_PAYLOAD = "/EncryptedPayload" # Encrypted payload document
FORM_DATA = "/FormData" # Data associated with AcroForm of this PDF
SCHEMA = "/Schema" # Schema definition for associated object
UNSPECIFIED = "/Unspecified" # Not known or cannot be described with values
class BorderStyles:
"""
A class defining border styles used in PDF documents.
Defined in table 168 of the PDF 2.0 reference.
"""
BEVELED = "/B"
DASHED = "/D"
INSET = "/I"
SOLID = "/S"
UNDERLINED = "/U"