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# -*- coding: utf-8 -*- r""" Unicode Art
This module implements ascii art using unicode characters. It is a strict superset of :mod:`~sage.typeset.ascii_art`. """
#******************************************************************************* # Copyright (C) 2013 Jean-Baptiste Priez <jbp@kerios.fr>, # 2015 Volker Braun <vbraun.name@gmail.com> # # Distributed under the terms of the GNU General Public License (GPL) # # This code is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # The full text of the GPL is available at: # # http://www.gnu.org/licenses/ #*******************************************************************************
from sage.typeset.character_art import CharacterArt from sage.typeset.character_art_factory import CharacterArtFactory import sage.typeset.symbols as symbol from six import text_type
class UnicodeArt(CharacterArt): r""" An Ascii art object is an object with some specific representation for *printing*.
INPUT:
- ``lines`` -- the list of lines of the representation of the ascii art object
- ``breakpoints`` -- the list of points where the representation can be split
- ``baseline`` -- the reference line (from the bottom)
EXAMPLES::
sage: i = var('i') sage: unicode_art(sum(pi^i/factorial(i)*x^i, i, 0, oo)) π⋅x ℯ """ _string_type = text_type
def __unicode__(self): r""" Return a unicode representation of ``self``.
EXAMPLES::
sage: i = var('i') sage: ua = unicode_art(sum(pi^i/factorial(i)*x^i, i, 0, oo)) sage: unicode(ua) # py2 u' \u03c0\u22c5x\n\u212f ' sage: str(ua) # py3 ' \u03c0\u22c5x\n\u212f ' """
_unicode_art_factory = CharacterArtFactory( UnicodeArt, text_type, '_unicode_art_', (symbol.unicode_left_parenthesis, symbol.unicode_right_parenthesis), (symbol.unicode_left_square_bracket, symbol.unicode_right_square_bracket), (symbol.unicode_left_curly_brace, symbol.unicode_right_curly_brace), )
empty_unicode_art = _unicode_art_factory.build_empty()
def unicode_art(*obj, **kwds): r""" Return an unicode art representation
INPUT:
- ``*obj`` -- any number of positional arguments, of arbitrary type. The objects whose ascii art representation we want.
- ``sep`` -- optional ``'sep=...'`` keyword argument (or ``'separator'``). Anything that can be converted to unicode art (default: empty unicode art). The separator in-between a list of objects. Only used if more than one object given.
- ``baseline`` -- (default: 0) the baseline for the object
- ``sep_baseline`` -- (default: 0) the baseline for the separator
OUTPUT:
:class:`UnicodeArt` instance.
EXAMPLES::
sage: unicode_art(integral(exp(sqrt(x))/(x+pi), x)) ⌠ ⎮ √x ⎮ ℯ ⎮ ───── dx ⎮ x + π ⌡ sage: ident = lambda n: identity_matrix(ZZ, n) sage: unicode_art(ident(1), ident(2), ident(3), sep=' : ') ⎛1 0 0⎞ ⎛1 0⎞ ⎜0 1 0⎟ (1) : ⎝0 1⎠ : ⎝0 0 1⎠
If specified, the ``sep_baseline`` overrides the baseline of an unicode art separator::
sage: sep_line = unicode_art('\n'.join(u' ⎟ ' for _ in range(5)), baseline=5) sage: unicode_art(*AlternatingSignMatrices(3), ....: separator=sep_line, sep_baseline=1) ⎟ ⎟ ⎟ ⎟ ⎟ ⎟ ⎛1 0 0⎞ ⎟ ⎛0 1 0⎞ ⎟ ⎛1 0 0⎞ ⎟ ⎛ 0 1 0⎞ ⎟ ⎛0 0 1⎞ ⎟ ⎛0 1 0⎞ ⎟ ⎛0 0 1⎞ ⎜0 1 0⎟ ⎟ ⎜1 0 0⎟ ⎟ ⎜0 0 1⎟ ⎟ ⎜ 1 -1 1⎟ ⎟ ⎜1 0 0⎟ ⎟ ⎜0 0 1⎟ ⎟ ⎜0 1 0⎟ ⎝0 0 1⎠ ⎟ ⎝0 0 1⎠ ⎟ ⎝0 1 0⎠ ⎟ ⎝ 0 1 0⎠ ⎟ ⎝0 1 0⎠ ⎟ ⎝1 0 0⎠ ⎟ ⎝1 0 0⎠ ⎟ ⎟ ⎟ ⎟ ⎟ ⎟
TESTS::
sage: n = var('n') sage: unicode_art(sum(binomial(2 * n, n + 1) * x^n, n, 0, oo)) ⎛ __________ ⎞ -⎝2⋅x + ╲╱ -4⋅x + 1 - 1⎠ ────────────────────────── __________ 2⋅x⋅╲╱ -4⋅x + 1 sage: unicode_art(list(DyckWords(3))) ⎡ ╱╲ ⎤ ⎢ ╱╲ ╱╲ ╱╲╱╲ ╱ ╲ ⎥ ⎣ ╱╲╱╲╱╲, ╱╲╱ ╲, ╱ ╲╱╲, ╱ ╲, ╱ ╲ ⎦ sage: unicode_art(1) 1 """ raise ValueError('unknown keyword arguments: {0}'.format(list(kwds))) baseline=baseline)
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