mirror of
https://github.com/JonathanHerrewijnen/calibre-web.git
synced 2024-11-14 07:03:50 +00:00
104 lines
3.2 KiB
Python
104 lines
3.2 KiB
Python
|
""":mod:`wand.font` --- Fonts
|
||
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
.. versionadded:: 0.3.0
|
||
|
|
|
||
|
|
:class:`Font` is an object which takes the :attr:`~Font.path` of font file,
|
||
|
|
:attr:`~Font.size`, :attr:`~Font.color`, and whether to use
|
||
|
|
:attr:`~Font.antialias`\ ing. If you want to use font by its name rather
|
||
|
|
than the file path, use TTFQuery_ package. The font path resolution by its
|
||
|
|
name is a very complicated problem to achieve.
|
||
|
|
|
||
|
|
.. seealso::
|
||
|
|
|
||
|
|
TTFQuery_ --- Find and Extract Information from TTF Files
|
||
|
|
TTFQuery builds on the `FontTools-TTX`_ package to allow the Python
|
||
|
|
programmer to accomplish a number of tasks:
|
||
|
|
|
||
|
|
- query the system to find installed fonts
|
||
|
|
|
||
|
|
- retrieve metadata about any TTF font file
|
||
|
|
|
||
|
|
- this includes the glyph outlines (shape) of individual code-points,
|
||
|
|
which allows for rendering the glyphs in 3D (such as is done in
|
||
|
|
OpenGLContext)
|
||
|
|
|
||
|
|
- lookup/find fonts by:
|
||
|
|
|
||
|
|
- abstract family type
|
||
|
|
- proper font name
|
||
|
|
|
||
|
|
- build simple metadata registries for run-time font matching
|
||
|
|
|
||
|
|
.. _TTFQuery: http://ttfquery.sourceforge.net/
|
||
|
|
.. _FontTools-TTX: http://sourceforge.net/projects/fonttools/
|
||
|
|
|
||
|
|
"""
|
||
|
|
import numbers
|
||
|
|
|
||
|
|
from .color import Color
|
||
|
|
from .compat import string_type, text
|
||
|
|
|
||
|
|
__all__ = 'Font',
|
||
|
|
|
||
|
|
|
||
|
|
class Font(tuple):
|
||
|
|
"""Font struct which is a subtype of :class:`tuple`.
|
||
|
|
|
||
|
|
:param path: the path of the font file
|
||
|
|
:type path: :class:`str`, :class:`basestring`
|
||
|
|
:param size: the size of typeface. 0 by default which means *autosized*
|
||
|
|
:type size: :class:`numbers.Real`
|
||
|
|
:param color: the color of typeface. black by default
|
||
|
|
:type color: :class:`~wand.color.Color`
|
||
|
|
:param antialias: whether to use antialiasing. :const:`True` by default
|
||
|
|
:type antialias: :class:`bool`
|
||
|
|
|
||
|
|
.. versionchanged:: 0.3.9
|
||
|
|
The ``size`` parameter becomes optional. Its default value is
|
||
|
|
0, which means *autosized*.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __new__(cls, path, size=0, color=None, antialias=True):
|
||
|
|
if not isinstance(path, string_type):
|
||
|
|
raise TypeError('path must be a string, not ' + repr(path))
|
||
|
|
if not isinstance(size, numbers.Real):
|
||
|
|
raise TypeError('size must be a real number, not ' + repr(size))
|
||
|
|
if color is None:
|
||
|
|
color = Color('black')
|
||
|
|
elif not isinstance(color, Color):
|
||
|
|
raise TypeError('color must be an instance of wand.color.Color, '
|
||
|
|
'not ' + repr(color))
|
||
|
|
path = text(path)
|
||
|
|
return tuple.__new__(cls, (path, size, color, bool(antialias)))
|
||
|
|
|
||
|
|
@property
|
||
|
|
def path(self):
|
||
|
|
"""(:class:`basestring`) The path of font file."""
|
||
|
|
return self[0]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def size(self):
|
||
|
|
"""(:class:`numbers.Real`) The font size in pixels."""
|
||
|
|
return self[1]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def color(self):
|
||
|
|
"""(:class:`wand.color.Color`) The font color."""
|
||
|
|
return self[2]
|
||
|
|
|
||
|
|
@property
|
||
|
|
def antialias(self):
|
||
|
|
"""(:class:`bool`) Whether to apply antialiasing (``True``)
|
||
|
|
or not (``False``).
|
||
|
|
|
||
|
|
"""
|
||
|
|
return self[3]
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return '{0.__module__}.{0.__name__}({1})'.format(
|
||
|
|
type(self),
|
||
|
|
tuple.__repr__(self)
|
||
|
|
)
|