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fitz_helper_python_i.py
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fitz_helper_python_i.py
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%pythoncode %{
# ------------------------------------------------------------------------
# Copyright 2020-2021, Harald Lieder, mailto:harald.lieder@outlook.com
# License: GNU AFFERO GPL 3.0, https://www.gnu.org/licenses/agpl-3.0.html
#
# Part of "PyMuPDF", a Python binding for "MuPDF" (http://mupdf.com), a
# lightweight PDF, XPS, and E-book viewer, renderer and toolkit which is
# maintained and developed by Artifex Software, Inc. https://artifex.com.
# ------------------------------------------------------------------------
# ------------------------------------------------------------------------------
# link kinds and link flags
# ------------------------------------------------------------------------------
LINK_NONE = 0
LINK_GOTO = 1
LINK_URI = 2
LINK_LAUNCH = 3
LINK_NAMED = 4
LINK_GOTOR = 5
LINK_FLAG_L_VALID = 1
LINK_FLAG_T_VALID = 2
LINK_FLAG_R_VALID = 4
LINK_FLAG_B_VALID = 8
LINK_FLAG_FIT_H = 16
LINK_FLAG_FIT_V = 32
LINK_FLAG_R_IS_ZOOM = 64
# ------------------------------------------------------------------------------
# Text handling flags
# ------------------------------------------------------------------------------
TEXT_ALIGN_LEFT = 0
TEXT_ALIGN_CENTER = 1
TEXT_ALIGN_RIGHT = 2
TEXT_ALIGN_JUSTIFY = 3
TEXT_OUTPUT_TEXT = 0
TEXT_OUTPUT_HTML = 1
TEXT_OUTPUT_JSON = 2
TEXT_OUTPUT_XML = 3
TEXT_OUTPUT_XHTML = 4
TEXT_PRESERVE_LIGATURES = 1
TEXT_PRESERVE_WHITESPACE = 2
TEXT_PRESERVE_IMAGES = 4
TEXT_INHIBIT_SPACES = 8
TEXT_DEHYPHENATE = 16
TEXT_PRESERVE_SPANS = 32
# ------------------------------------------------------------------------------
# Simple text encoding options
# ------------------------------------------------------------------------------
TEXT_ENCODING_LATIN = 0
TEXT_ENCODING_GREEK = 1
TEXT_ENCODING_CYRILLIC = 2
# ------------------------------------------------------------------------------
# Stamp annotation icon numbers
# ------------------------------------------------------------------------------
STAMP_Approved = 0
STAMP_AsIs = 1
STAMP_Confidential = 2
STAMP_Departmental = 3
STAMP_Experimental = 4
STAMP_Expired = 5
STAMP_Final = 6
STAMP_ForComment = 7
STAMP_ForPublicRelease = 8
STAMP_NotApproved = 9
STAMP_NotForPublicRelease = 10
STAMP_Sold = 11
STAMP_TopSecret = 12
STAMP_Draft = 13
# ------------------------------------------------------------------------------
# Base 14 font names and dictionary
# ------------------------------------------------------------------------------
Base14_fontnames = (
"Courier",
"Courier-Oblique",
"Courier-Bold",
"Courier-BoldOblique",
"Helvetica",
"Helvetica-Oblique",
"Helvetica-Bold",
"Helvetica-BoldOblique",
"Times-Roman",
"Times-Italic",
"Times-Bold",
"Times-BoldItalic",
"Symbol",
"ZapfDingbats",
)
Base14_fontdict = {}
for f in Base14_fontnames:
Base14_fontdict[f.lower()] = f
del f
Base14_fontdict["helv"] = "Helvetica"
Base14_fontdict["heit"] = "Helvetica-Oblique"
Base14_fontdict["hebo"] = "Helvetica-Bold"
Base14_fontdict["hebi"] = "Helvetica-BoldOblique"
Base14_fontdict["cour"] = "Courier"
Base14_fontdict["coit"] = "Courier-Oblique"
Base14_fontdict["cobo"] = "Courier-Bold"
Base14_fontdict["cobi"] = "Courier-BoldOblique"
Base14_fontdict["tiro"] = "Times-Roman"
Base14_fontdict["tibo"] = "Times-Bold"
Base14_fontdict["tiit"] = "Times-Italic"
Base14_fontdict["tibi"] = "Times-BoldItalic"
Base14_fontdict["symb"] = "Symbol"
Base14_fontdict["zadb"] = "ZapfDingbats"
annot_skel = {
"goto1": "<</A<</S/GoTo/D[%i 0 R/XYZ %g %g %g]>>/Rect[%s]/BS<</W 0>>/Subtype/Link>>",
"goto2": "<</A<</S/GoTo/D%s>>/Rect[%s]/BS<</W 0>>/Subtype/Link>>",
"gotor1": "<</A<</S/GoToR/D[%i /XYZ %g %g %g]/F<</F(%s)/UF(%s)/Type/Filespec>>>>/Rect[%s]/BS<</W 0>>/Subtype/Link>>",
"gotor2": "<</A<</S/GoToR/D%s/F(%s)>>/Rect[%s]/BS<</W 0>>/Subtype/Link>>",
"launch": "<</A<</S/Launch/F<</F(%s)/UF(%s)/Type/Filespec>>>>/Rect[%s]/BS<</W 0>>/Subtype/Link>>",
"uri": "<</A<</S/URI/URI(%s)>>/Rect[%s]/BS<</W 0>>/Subtype/Link>>",
"named": "<</A<</S/Named/N/%s/Type/Action>>/Rect[%s]/BS<</W 0>>/Subtype/Link>>",
}
def get_text_length(text: str, fontname: str ="helv", fontsize: float =11, encoding: int =0) -> float:
"""Calculate length of a string for a built-in font.
Args:
fontname: name of the font.
fontsize: font size points.
encoding: encoding to use, 0=Latin (default), 1=Greek, 2=Cyrillic.
Returns:
(float) length of text.
"""
fontname = fontname.lower()
basename = Base14_fontdict.get(fontname, None)
glyphs = None
if basename == "Symbol":
glyphs = symbol_glyphs
if basename == "ZapfDingbats":
glyphs = zapf_glyphs
if glyphs is not None:
w = sum([glyphs[ord(c)][1] if ord(c) < 256 else glyphs[183][1] for c in text])
return w * fontsize
if fontname in Base14_fontdict.keys():
return TOOLS._measure_string(
text, Base14_fontdict[fontname], fontsize, encoding
)
if fontname in (
"china-t",
"china-s",
"china-ts",
"china-ss",
"japan",
"japan-s",
"korea",
"korea-s",
):
return len(text) * fontsize
raise ValueError("Font '%s' is unsupported" % fontname)
# ------------------------------------------------------------------------------
# Glyph list for the built-in font 'ZapfDingbats'
# ------------------------------------------------------------------------------
zapf_glyphs = (
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(32, 0.278),
(33, 0.974),
(34, 0.961),
(35, 0.974),
(36, 0.98),
(37, 0.719),
(38, 0.789),
(39, 0.79),
(40, 0.791),
(41, 0.69),
(42, 0.96),
(43, 0.939),
(44, 0.549),
(45, 0.855),
(46, 0.911),
(47, 0.933),
(48, 0.911),
(49, 0.945),
(50, 0.974),
(51, 0.755),
(52, 0.846),
(53, 0.762),
(54, 0.761),
(55, 0.571),
(56, 0.677),
(57, 0.763),
(58, 0.76),
(59, 0.759),
(60, 0.754),
(61, 0.494),
(62, 0.552),
(63, 0.537),
(64, 0.577),
(65, 0.692),
(66, 0.786),
(67, 0.788),
(68, 0.788),
(69, 0.79),
(70, 0.793),
(71, 0.794),
(72, 0.816),
(73, 0.823),
(74, 0.789),
(75, 0.841),
(76, 0.823),
(77, 0.833),
(78, 0.816),
(79, 0.831),
(80, 0.923),
(81, 0.744),
(82, 0.723),
(83, 0.749),
(84, 0.79),
(85, 0.792),
(86, 0.695),
(87, 0.776),
(88, 0.768),
(89, 0.792),
(90, 0.759),
(91, 0.707),
(92, 0.708),
(93, 0.682),
(94, 0.701),
(95, 0.826),
(96, 0.815),
(97, 0.789),
(98, 0.789),
(99, 0.707),
(100, 0.687),
(101, 0.696),
(102, 0.689),
(103, 0.786),
(104, 0.787),
(105, 0.713),
(106, 0.791),
(107, 0.785),
(108, 0.791),
(109, 0.873),
(110, 0.761),
(111, 0.762),
(112, 0.762),
(113, 0.759),
(114, 0.759),
(115, 0.892),
(116, 0.892),
(117, 0.788),
(118, 0.784),
(119, 0.438),
(120, 0.138),
(121, 0.277),
(122, 0.415),
(123, 0.392),
(124, 0.392),
(125, 0.668),
(126, 0.668),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(183, 0.788),
(161, 0.732),
(162, 0.544),
(163, 0.544),
(164, 0.91),
(165, 0.667),
(166, 0.76),
(167, 0.76),
(168, 0.776),
(169, 0.595),
(170, 0.694),
(171, 0.626),
(172, 0.788),
(173, 0.788),
(174, 0.788),
(175, 0.788),
(176, 0.788),
(177, 0.788),
(178, 0.788),
(179, 0.788),
(180, 0.788),
(181, 0.788),
(182, 0.788),
(183, 0.788),
(184, 0.788),
(185, 0.788),
(186, 0.788),
(187, 0.788),
(188, 0.788),
(189, 0.788),
(190, 0.788),
(191, 0.788),
(192, 0.788),
(193, 0.788),
(194, 0.788),
(195, 0.788),
(196, 0.788),
(197, 0.788),
(198, 0.788),
(199, 0.788),
(200, 0.788),
(201, 0.788),
(202, 0.788),
(203, 0.788),
(204, 0.788),
(205, 0.788),
(206, 0.788),
(207, 0.788),
(208, 0.788),
(209, 0.788),
(210, 0.788),
(211, 0.788),
(212, 0.894),
(213, 0.838),
(214, 1.016),
(215, 0.458),
(216, 0.748),
(217, 0.924),
(218, 0.748),
(219, 0.918),
(220, 0.927),
(221, 0.928),
(222, 0.928),
(223, 0.834),
(224, 0.873),
(225, 0.828),
(226, 0.924),
(227, 0.924),
(228, 0.917),
(229, 0.93),
(230, 0.931),
(231, 0.463),
(232, 0.883),
(233, 0.836),
(234, 0.836),
(235, 0.867),
(236, 0.867),
(237, 0.696),
(238, 0.696),
(239, 0.874),
(183, 0.788),
(241, 0.874),
(242, 0.76),
(243, 0.946),
(244, 0.771),
(245, 0.865),
(246, 0.771),
(247, 0.888),
(248, 0.967),
(249, 0.888),
(250, 0.831),
(251, 0.873),
(252, 0.927),
(253, 0.97),
(183, 0.788),
(183, 0.788),
)
# ------------------------------------------------------------------------------
# Glyph list for the built-in font 'Symbol'
# ------------------------------------------------------------------------------
symbol_glyphs = (
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(32, 0.25),
(33, 0.333),
(34, 0.713),
(35, 0.5),
(36, 0.549),
(37, 0.833),
(38, 0.778),
(39, 0.439),
(40, 0.333),
(41, 0.333),
(42, 0.5),
(43, 0.549),
(44, 0.25),
(45, 0.549),
(46, 0.25),
(47, 0.278),
(48, 0.5),
(49, 0.5),
(50, 0.5),
(51, 0.5),
(52, 0.5),
(53, 0.5),
(54, 0.5),
(55, 0.5),
(56, 0.5),
(57, 0.5),
(58, 0.278),
(59, 0.278),
(60, 0.549),
(61, 0.549),
(62, 0.549),
(63, 0.444),
(64, 0.549),
(65, 0.722),
(66, 0.667),
(67, 0.722),
(68, 0.612),
(69, 0.611),
(70, 0.763),
(71, 0.603),
(72, 0.722),
(73, 0.333),
(74, 0.631),
(75, 0.722),
(76, 0.686),
(77, 0.889),
(78, 0.722),
(79, 0.722),
(80, 0.768),
(81, 0.741),
(82, 0.556),
(83, 0.592),
(84, 0.611),
(85, 0.69),
(86, 0.439),
(87, 0.768),
(88, 0.645),
(89, 0.795),
(90, 0.611),
(91, 0.333),
(92, 0.863),
(93, 0.333),
(94, 0.658),
(95, 0.5),
(96, 0.5),
(97, 0.631),
(98, 0.549),
(99, 0.549),
(100, 0.494),
(101, 0.439),
(102, 0.521),
(103, 0.411),
(104, 0.603),
(105, 0.329),
(106, 0.603),
(107, 0.549),
(108, 0.549),
(109, 0.576),
(110, 0.521),
(111, 0.549),
(112, 0.549),
(113, 0.521),
(114, 0.549),
(115, 0.603),
(116, 0.439),
(117, 0.576),
(118, 0.713),
(119, 0.686),
(120, 0.493),
(121, 0.686),
(122, 0.494),
(123, 0.48),
(124, 0.2),
(125, 0.48),
(126, 0.549),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(183, 0.46),
(160, 0.25),
(161, 0.62),
(162, 0.247),
(163, 0.549),
(164, 0.167),
(165, 0.713),
(166, 0.5),
(167, 0.753),
(168, 0.753),
(169, 0.753),
(170, 0.753),
(171, 1.042),
(172, 0.713),
(173, 0.603),
(174, 0.987),
(175, 0.603),
(176, 0.4),
(177, 0.549),
(178, 0.411),
(179, 0.549),
(180, 0.549),
(181, 0.576),
(182, 0.494),
(183, 0.46),
(184, 0.549),
(185, 0.549),
(186, 0.549),
(187, 0.549),
(188, 1),
(189, 0.603),
(190, 1),
(191, 0.658),
(192, 0.823),
(193, 0.686),
(194, 0.795),
(195, 0.987),
(196, 0.768),
(197, 0.768),
(198, 0.823),
(199, 0.768),
(200, 0.768),
(201, 0.713),
(202, 0.713),
(203, 0.713),
(204, 0.713),
(205, 0.713),
(206, 0.713),
(207, 0.713),
(208, 0.768),
(209, 0.713),
(210, 0.79),
(211, 0.79),
(212, 0.89),
(213, 0.823),
(214, 0.549),
(215, 0.549),
(216, 0.713),
(217, 0.603),
(218, 0.603),
(219, 1.042),
(220, 0.987),
(221, 0.603),
(222, 0.987),
(223, 0.603),
(224, 0.494),
(225, 0.329),
(226, 0.79),
(227, 0.79),
(228, 0.786),
(229, 0.713),
(230, 0.384),
(231, 0.384),
(232, 0.384),
(233, 0.384),
(234, 0.384),
(235, 0.384),
(236, 0.494),
(237, 0.494),
(238, 0.494),
(239, 0.494),
(183, 0.46),
(241, 0.329),
(242, 0.274),
(243, 0.686),
(244, 0.686),
(245, 0.686),
(246, 0.384),
(247, 0.549),
(248, 0.384),
(249, 0.384),
(250, 0.384),
(251, 0.384),
(252, 0.494),
(253, 0.494),
(254, 0.494),
(183, 0.46),
)
class linkDest(object):
"""link or outline destination details"""
def __init__(self, obj, rlink):
isExt = obj.is_external
isInt = not isExt
self.dest = ""
self.fileSpec = ""
self.flags = 0
self.isMap = False
self.isUri = False
self.kind = LINK_NONE
self.lt = Point(0, 0)
self.named = ""
self.newWindow = ""
self.page = obj.page
self.rb = Point(0, 0)
self.uri = obj.uri
if rlink and not self.uri.startswith("#"):
self.uri = "#%i,%g,%g" % (rlink[0] + 1, rlink[1], rlink[2])
if obj.is_external:
self.page = -1
self.kind = LINK_URI
if not self.uri:
self.page = -1
self.kind = LINK_NONE
if isInt and self.uri:
if self.uri.startswith("#"):
self.named = ""
self.kind = LINK_GOTO
ftab = self.uri[1:].split(",")
if len(ftab) == 3:
self.page = int(ftab[0]) - 1
self.lt = Point(float(ftab[1]), float(ftab[2]))
self.flags = self.flags | LINK_FLAG_L_VALID | LINK_FLAG_T_VALID
else:
try:
self.page = int(ftab[0]) - 1
except:
self.kind = LINK_NAMED
self.named = self.uri[1:]
else:
self.kind = LINK_NAMED
self.named = self.uri
if obj.is_external:
if self.uri.startswith(("http://", "https://", "mailto:", "ftp://")):
self.isUri = True
self.kind = LINK_URI
elif self.uri.startswith("file://"):
self.fileSpec = self.uri[7:]
self.isUri = False
self.uri = ""
self.kind = LINK_LAUNCH
ftab = self.fileSpec.split("#")
if len(ftab) == 2:
if ftab[1].startswith("page="):
self.kind = LINK_GOTOR
self.fileSpec = ftab[0]
self.page = int(ftab[1][5:]) - 1
else:
self.isUri = True
self.kind = LINK_LAUNCH
# -------------------------------------------------------------------------------
# "Now" timestamp in PDF Format
# -------------------------------------------------------------------------------
def get_pdf_now() -> str:
import time
tz = "%s'%s'" % (
str(abs(time.altzone // 3600)).rjust(2, "0"),
str((abs(time.altzone // 60) % 60)).rjust(2, "0"),
)
tstamp = time.strftime("D:%Y%m%d%H%M%S", time.localtime())
if time.altzone > 0:
tstamp += "-" + tz
elif time.altzone < 0:
tstamp += "+" + tz
else:
pass
return tstamp
def get_pdf_str(s: str) -> str:
""" Return a PDF string depending on its coding.
Notes:
Returns a string bracketed with either "()" or "<>" for hex values.
If only ascii then "(original)" is returned, else if only 8 bit chars
then "(original)" with interspersed octal strings \nnn is returned,
else a string "<FEFF[hexstring]>" is returned, where [hexstring] is the
UTF-16BE encoding of the original.
"""
if not bool(s):
return "()"
def make_utf16be(s):
r = bytearray([254, 255]) + bytearray(s, "UTF-16BE")
return "<" + r.hex() + ">" # brackets indicate hex
# The following either returns the original string with mixed-in
# octal numbers \nnn for chars outside the ASCII range, or returns
# the UTF-16BE BOM version of the string.
r = ""
for c in s:
oc = ord(c)
if oc > 255: # shortcut if beyond 8-bit code range
return make_utf16be(s)
if oc > 31 and oc < 127: # in ASCII range
if c in ("(", ")", "\\"): # these need to be escaped
r += "\\"
r += c
continue
if oc > 127: # beyond ASCII
r += "\\%03o" % oc
continue
# now the white spaces
if oc == 8: # backspace
r += "\\b"
elif oc == 9: # tab
r += "\\t"
elif oc == 10: # line feed
r += "\\n"
elif oc == 12: # form feed
r += "\\f"
elif oc == 13: # carriage return
r += "\\r"
else:
r += "\\267" # unsupported: replace by 0xB7
return "(" + r + ")"
def getTJstr(text: str, glyphs: typing.Union[list, tuple, None], simple: bool, ordering: int) -> str:
""" Return a PDF string enclosed in [] brackets, suitable for the PDF TJ
operator.
Notes:
The input string is converted to either 2 or 4 hex digits per character.
Args:
simple: no glyphs: 2-chars, use char codes as the glyph
glyphs: 2-chars, use glyphs instead of char codes (Symbol,
ZapfDingbats)
not simple: ordering < 0: 4-chars, use glyphs not char codes
ordering >=0: a CJK font! 4 chars, use char codes as glyphs
"""
if text.startswith("[<") and text.endswith(">]"): # already done
return text
if not bool(text):
return "[<>]"
if simple: # each char or its glyph is coded as a 2-byte hex
if glyphs is None: # not Symbol, not ZapfDingbats: use char code
otxt = "".join(["%02x" % ord(c) if ord(c) < 256 else "b7" for c in text])
else: # Symbol or ZapfDingbats: use glyphs
otxt = "".join(
["%02x" % glyphs[ord(c)][0] if ord(c) < 256 else "b7" for c in text]
)
return "[<" + otxt + ">]"
# non-simple fonts: each char or its glyph is coded as 4-byte hex
if ordering < 0: # not a CJK font: use the glyphs
otxt = "".join(["%04x" % glyphs[ord(c)][0] for c in text])
else: # CJK: use the char codes
otxt = "".join(["%04x" % ord(c) for c in text])
return "[<" + otxt + ">]"
def paper_sizes():
"""Known paper formats @ 72 dpi as a dictionary. Key is the format string
like "a4" for ISO-A4. Value is the tuple (width, height).
Information taken from the following web sites:
www.din-formate.de
www.din-formate.info/amerikanische-formate.html
www.directtools.de/wissen/normen/iso.htm
"""
return {
"a0": (2384, 3370),
"a1": (1684, 2384),
"a10": (74, 105),
"a2": (1191, 1684),
"a3": (842, 1191),
"a4": (595, 842),
"a5": (420, 595),
"a6": (298, 420),
"a7": (210, 298),
"a8": (147, 210),
"a9": (105, 147),
"b0": (2835, 4008),
"b1": (2004, 2835),
"b10": (88, 125),
"b2": (1417, 2004),
"b3": (1001, 1417),
"b4": (709, 1001),
"b5": (499, 709),
"b6": (354, 499),
"b7": (249, 354),
"b8": (176, 249),
"b9": (125, 176),
"c0": (2599, 3677),
"c1": (1837, 2599),
"c10": (79, 113),
"c2": (1298, 1837),
"c3": (918, 1298),
"c4": (649, 918),
"c5": (459, 649),
"c6": (323, 459),
"c7": (230, 323),
"c8": (162, 230),
"c9": (113, 162),
"card-4x6": (288, 432),
"card-5x7": (360, 504),
"commercial": (297, 684),
"executive": (522, 756),
"invoice": (396, 612),
"ledger": (792, 1224),
"legal": (612, 1008),
"legal-13": (612, 936),
"letter": (612, 792),
"monarch": (279, 540),
"tabloid-extra": (864, 1296),
}
def paper_size(s: str) -> tuple:
"""Return a tuple (width, height) for a given paper format string.
Notes:
'A4-L' will return (842, 595), the values for A4 landscape.
Suffix '-P' and no suffix return the portrait tuple.
"""
size = s.lower()
f = "p"
if size.endswith("-l"):
f = "l"
size = size[:-2]
if size.endswith("-p"):
size = size[:-2]
rc = paper_sizes().get(size, (-1, -1))
if f == "p":
return rc
return (rc[1], rc[0])
def paper_rect(s: str) -> Rect:
"""Return a Rect for the paper size indicated in string 's'. Must conform to the argument of method 'PaperSize', which will be invoked.
"""
width, height = paper_size(s)
return Rect(0.0, 0.0, width, height)
def CheckParent(o: typing.Any):
if getattr(o, "parent", None) == None:
raise ValueError("orphaned object: parent is None")
def CheckColor(c: OptSeq):
if c:
if (
type(c) not in (list, tuple)
or len(c) not in (1, 3, 4)
or min(c) < 0
or max(c) > 1
):
raise ValueError("need 1, 3 or 4 color components in range 0 to 1")
def ColorCode(c: typing.Union[list, tuple, float, None], f: str) -> str:
if not c:
return ""
if hasattr(c, "__float__"):
c = (c,)
CheckColor(c)
if len(c) == 1:
s = "%g " % c[0]
return s + "G " if f == "c" else s + "g "
if len(c) == 3:
s = "%g %g %g " % tuple(c)
return s + "RG " if f == "c" else s + "rg "
s = "%g %g %g %g " % tuple(c)
return s + "K " if f == "c" else s + "k "
def JM_TUPLE(o: typing.Sequence) -> tuple:
return tuple(map(lambda x: round(x, 5) if abs(x) >= 1e-4 else 0, o))
def CheckRect(r: typing.Any) -> bool:
"""Check whether an object is non-degenerate rect-like.
It must be a sequence of 4 numbers.
"""
try:
r = Rect(r)
except:
return False
return not (r.is_empty or r.is_infinite)
def CheckQuad(q: typing.Any) -> bool:
"""Check whether an object is convex, not empty quad-like.