def get_single_character_width(self, character_code: int) -> Optional[Decimal]:
# self
if "Widths" in self and "FirstChar" in self and "LastChar" in self:
if self["FirstChar"] <= character_code <= self["LastChar"] and len(
self["Widths"]
) >= (self["LastChar"] - self["FirstChar"]):
return self["Widths"][int(character_code - self["FirstChar"])]
return None
# standard 14
standard_14_font = AdobeFontMetrics.get(self.get_font_name())
if (
standard_14_font is not None
and "Widths" in standard_14_font
and "FirstChar" in standard_14_font
and "LastChar" in standard_14_font
):
if standard_14_font["FirstChar"] <= character_code <= standard_14_font[
"LastChar"
] and len(standard_14_font["Widths"]) >= (
standard_14_font["LastChar"] - standard_14_font["FirstChar"]
):
return standard_14_font["Widths"][
int(character_code - standard_14_font["FirstChar"])
]
# default
return None
def get_single_character_width(self,
character_code: int) -> Optional[Decimal]:
"""
Get the width (in text space) of a given character code.
Returns None if the character code can not be represented in this Font.
"""
# self
if "Widths" in self and "FirstChar" in self and "LastChar" in self:
if self["FirstChar"] <= character_code <= self["LastChar"] and len(
self["Widths"]) >= (self["LastChar"] - self["FirstChar"]):
return self["Widths"][int(character_code - self["FirstChar"])]
return None
# standard 14
font_name: Optional[str] = self.get_font_name()
assert font_name is not None
standard_14_font = AdobeFontMetrics.get(font_name)
if (standard_14_font is not None and "Widths" in standard_14_font
and "FirstChar" in standard_14_font
and "LastChar" in standard_14_font):
if standard_14_font[
"FirstChar"] <= character_code <= standard_14_font[
"LastChar"] and len(standard_14_font["Widths"]) >= (
standard_14_font["LastChar"] -
standard_14_font["FirstChar"]):
return standard_14_font["Widths"][int(
character_code - standard_14_font["FirstChar"])]
# default
return None
def __init__(
self,
text: str,
font: Union[Font, str] = "Helvetica",
font_size: Decimal = Decimal(12),
font_color: Color = X11Color("Black"),
border_top: bool = False,
border_right: bool = False,
border_bottom: bool = False,
border_left: bool = False,
border_color: Color = X11Color("Black"),
border_width: Decimal = Decimal(1),
padding_top: Decimal = Decimal(0),
padding_right: Decimal = Decimal(0),
padding_bottom: Decimal = Decimal(0),
padding_left: Decimal = Decimal(0),
vertical_alignment: Alignment = Alignment.TOP,
horizontal_alignment: Alignment = Alignment.LEFT,
background_color: typing.Optional[Color] = None,
parent: typing.Optional["LayoutElement"] = None,
):
super().__init__(
border_top=border_top,
border_right=border_right,
border_bottom=border_bottom,
border_left=border_left,
border_color=border_color,
border_width=border_width,
padding_top=padding_top,
padding_right=padding_right,
padding_bottom=padding_bottom,
padding_left=padding_left,
vertical_alignment=vertical_alignment,
horizontal_alignment=horizontal_alignment,
background_color=background_color,
parent=parent,
)
self.text = text
if isinstance(font, str):
self.font: Font = FontType1()
font_to_copy: typing.Optional[Font] = AdobeFontMetrics.get(font)
self.font[Name("Encoding")] = Name("WinAnsiEncoding")
assert font_to_copy
for k, v in font_to_copy.items():
self.font[k] = v
assert self.font
else:
self.font = font
self.font_color = font_color
self.font_size = font_size
def get_descent(self) -> Optional[Decimal]:
# self
if "FontDescriptor" in self and "Descent" in self["FontDescriptor"]:
return self["FontDescriptor"]["Descent"]
# standard 14
font_name: Optional[str] = self.get_font_name()
assert font_name is not None
standard_14_font = AdobeFontMetrics.get(font_name)
if (standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "Descent" in standard_14_font["FontDescriptor"]):
return standard_14_font["FontDescriptor"]["Descent"]
# default
return None
def get_average_character_width(self) -> Optional[Decimal]:
# self
if "FontDescriptor" in self and "AvgWidth" in self["FontDescriptor"]:
return self["FontDescriptor"]["AvgWidth"]
# standard 14
font_name: Optional[str] = self.get_font_name()
assert font_name is not None
standard_14_font = AdobeFontMetrics.get(font_name)
if (standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "AvgWidth" in standard_14_font["FontDescriptor"]):
return standard_14_font["FontDescriptor"]["AvgWidth"]
# default
return None
def get_missing_character_width(self) -> Optional[Decimal]:
# self
if "FontDescriptor" in self and "MissingWidth" in self["FontDescriptor"]:
return self["FontDescriptor"]["MissingWidth"]
# standard 14
standard_14_font = AdobeFontMetrics.get(self.get_font_name())
if (
standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "MissingWidth" in standard_14_font["FontDescriptor"]
):
return standard_14_font["FontDescriptor"]["MissingWidth"]
# default
return None
def get_ascent(self) -> Optional[Decimal]:
# self
if "FontDescriptor" in self and "Ascent" in self["FontDescriptor"]:
return self["FontDescriptor"]["Ascent"]
# standard 14
standard_14_font = AdobeFontMetrics.get(self.get_font_name())
if (
standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "Ascent" in standard_14_font["FontDescriptor"]
):
return standard_14_font["FontDescriptor"]["Ascent"]
# default
return None
def get_missing_character_width(self) -> Decimal:
# self
if "FontDescriptor" in self and "MissingWidth" in self[
"FontDescriptor"]:
return self["FontDescriptor"]["MissingWidth"]
# standard 14
font_name: Optional[str] = self.get_font_name()
assert font_name is not None
standard_14_font = AdobeFontMetrics.get(font_name)
if (standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "MissingWidth" in standard_14_font["FontDescriptor"]):
return standard_14_font["FontDescriptor"]["MissingWidth"]
# default
return Decimal(250)
def get_descent(self) -> Optional[Decimal]:
"""
(Required, except for Type 3 fonts) The maximum depth below the
baseline reached by glyphs in this font. The value shall be a negative
number.
"""
# self
if "FontDescriptor" in self and "Descent" in self["FontDescriptor"]:
return self["FontDescriptor"]["Descent"]
# standard 14
font_name: Optional[str] = self.get_font_name()
assert font_name is not None
standard_14_font = AdobeFontMetrics.get(font_name)
if (standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "Descent" in standard_14_font["FontDescriptor"]):
return standard_14_font["FontDescriptor"]["Descent"]
# default
return None
def get_ascent(self) -> Optional[Decimal]:
"""
(Required, except for Type 3 fonts) The maximum height above the
baseline reached by glyphs in this font. The height of glyphs for
accented characters shall be excluded.
"""
# self
if "FontDescriptor" in self and "Ascent" in self["FontDescriptor"]:
return self["FontDescriptor"]["Ascent"]
# standard 14
font_name: Optional[str] = self.get_font_name()
assert font_name is not None
standard_14_font = AdobeFontMetrics.get(font_name)
if (standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "Ascent" in standard_14_font["FontDescriptor"]):
return standard_14_font["FontDescriptor"]["Ascent"]
# default
return None
def get_missing_character_width(self) -> Decimal:
"""
(Optional) The width to use for character codes whose widths are not
specified in a font dictionary’s Widths array. This shall have a
predictable effect only if all such codes map to glyphs whose actual
widths are the same as the value of the MissingWidth entry. Default
value: 0.
"""
# self
if "FontDescriptor" in self and "MissingWidth" in self[
"FontDescriptor"]:
return self["FontDescriptor"]["MissingWidth"]
# standard 14
font_name: Optional[str] = self.get_font_name()
assert font_name is not None
standard_14_font = AdobeFontMetrics.get(font_name)
if (standard_14_font is not None
and "FontDescriptor" in standard_14_font
and "MissingWidth" in standard_14_font["FontDescriptor"]):
return standard_14_font["FontDescriptor"]["MissingWidth"]
# default
return Decimal(250)
