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# coding: UTF-8
# Copyright 2009, 2010 Thomas Jourdan
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import unicodedata
import random
import cairo
import model_random
import model_locus
import model_allele
import model_constraintpool
from gettext import gettext as _
GLYPHFONTSIZE_CONSTRAINT = 'glyphfontsizeconstraint'
GLYPHFONTFAMILY_CONSTRAINT = 'glyphfontfamilyconstraint'
GLYPHCATEGORY_CONSTRAINT = 'glyphcategoryconstraint'
_unichar_category = None
unichrtab = (
0x00a4,
0x00ac,
0x00b1,
0x00b5,
0x00b6,
0x00bc,
0x00bd,
0x00be,
0x00c6,
0x00d8,
0x00e6,
0x00f8,
0x013d,
0x013f,
0x0152,
0x0153,
0x0192,
0x0402,
0x0409,
0x040a,
0x0428,
0x0429,
0x042d,
0x042e,
0x0431,
0x0444,
0x044d,
0x044e,
0x0459,
0x0498,
0x04b4,
0x04be,
0x04c1,
0x04d4,
0x04d5,
0x04da,
0x04dc,
0x04de,
0x04f4,
0x2021,
0x2202,
0x2206,
0x2211,
0x221a,
0x221e,
0x2260,
)
def classify_unichrtab():
global _unichar_category
if _unichar_category is None:
_unichar_category = set([])
for ux in range(len(unichrtab)):
uc = unichr(unichrtab[ux])
# print uc, '%04x' % ord(uc), unicodedata.category(uc), unicodedata.name(uc, '')
_unichar_category.add(unicodedata.category(uc))
# print 'unichar_category', type(_unichar_category), _unichar_category
return _unichar_category
def select_by(category_list):
selected = []
for ux in range(len(unichrtab)):
uc = unichr(unichrtab[ux])
if unicodedata.category(uc) in category_list:
selected.append(uc)
# print 'select_by', selected, category_list
return selected
class GlyphStamp(model_allele.Allele):
"""GlyphStamp:.
inv: self.size >= 0.0
"""
cdef = [{'bind' : GLYPHFONTSIZE_CONSTRAINT,
'name' : 'Font size in percent of the drawing area.',
'domain': model_constraintpool.INT_RANGE,
'min' : 0.01, 'max': 1.0},
{'bind' : GLYPHFONTFAMILY_CONSTRAINT,
'name' : 'Font family',
'domain': model_constraintpool.STRING_1_OF_N,
'enum' : ['Normal',
'Sans',
'Serif',
'Monospace',]},
{'bind' : GLYPHCATEGORY_CONSTRAINT,
'name' : 'Permitted themes for stamps',
'domain': model_constraintpool.STRING_M_OF_N,
'enum' : classify_unichrtab()
},
]
def __init__(self, trunk, maxstates):
"""Constructor for a flip merger."""
super(GlyphStamp, self).__init__(trunk)
self.max_states = maxstates
cpool = model_constraintpool.ConstraintPool.get_pool()
self.size = cpool.get(self, GLYPHFONTSIZE_CONSTRAINT)[0]
self.family = cpool.get(self, GLYPHFONTFAMILY_CONSTRAINT)[0]
self.category_list = ['Sm']
self.unichr_list = select_by(self.category_list)
self.mapping = [ix for ix in range(len(self.unichr_list))]
def __eq__(self, other):
"""Equality"""
equal = isinstance(other, GlyphStamp) \
and self.max_states == other.max_states \
and len(self.mapping) == len(other.mapping) \
and len(self.category_list) == len(other.category_list) \
and self.size == other.size \
and self.family == other.family
if equal:
for cix, value in enumerate(self.mapping):
equal = equal and value == other.mapping[cix]
if equal:
for cix, value in enumerate(self.category_list):
equal = equal and value == other.category_list[cix]
return equal
def randomize(self):
"""Randomize the stamps components."""
cpool = model_constraintpool.ConstraintPool.get_pool()
random.shuffle(self.mapping)
size_constraint = cpool.get(self, GLYPHFONTSIZE_CONSTRAINT)
self.size = model_random.uniform_constrained(size_constraint)
family_constraint = cpool.get(self, GLYPHFONTFAMILY_CONSTRAINT)
self.family = random.choice(family_constraint)
self._randomize_mapping(cpool)
def _randomize_mapping(self, cpool):
"""
pre: cpool is not None
"""
category_constraint = cpool.get(self, GLYPHCATEGORY_CONSTRAINT)
self.category_list = [ca for ca in classify_unichrtab() if ca in category_constraint]
self.unichr_list = select_by(self.category_list)
self.mapping = [ix for ix in range(len(self.unichr_list))]
random.shuffle(self.mapping)
def mutate(self):
"""Make small random changes to the layers components."""
cpool = model_constraintpool.ConstraintPool.get_pool()
if model_random.is_mutating():
self._randomize_mapping(cpool)
size_constraint = cpool.get(self, GLYPHFONTSIZE_CONSTRAINT)
self.size = model_random.jitter_constrained(self.size, size_constraint)
if model_random.is_mutating():
family_constraint = cpool.get(self, GLYPHFONTFAMILY_CONSTRAINT)
self.family = random.choice(family_constraint)
def swap_places(self):
"""Shuffle mapping table."""
model_random.swap_places(self.mapping)
def crossingover(self, other):
"""
pre: isinstance(other, GlyphStamp)
pre: isinstance(self, GlyphStamp)
# check for distinct references, needs to copy content, not references
post: __return__ is not self
post: __return__ is not other
post: model_locus.unique_check(__return__, self, other) == ''
"""
new_one = GlyphStamp(self.get_trunk(), self.max_states)
cross_sequence = model_random.crossing_sequence(3)
new_one.size = other.size if cross_sequence[0] else self.size
new_one.family = self.family if cross_sequence[1] else other.family
if cross_sequence[2]:
new_one.category_list = other.category_list[:]
new_one.unichr_list = other.unichr_list[:]
new_one.mapping = other.mapping[:]
else:
new_one.category_list = self.category_list[:]
new_one.unichr_list = self.unichr_list[:]
new_one.mapping = self.mapping[:]
return new_one
def set_stamp_extent(self, width, height):
"""Set extent of stamp. This stamps will ignore these parameters."""
pass
def render(self, ctx, point, state):
"""
pre: ctx is not None
pre: len(point) == 2
"""
uc = self.unichr_list[self.mapping[state % len(self.mapping)] % len(self.unichr_list)]
ctx.select_font_face(self.family,
cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_BOLD)
ctx.set_font_size(self.size)
x_bearing, y_bearing, width, height = ctx.text_extents(uc)[:4]
ctx.move_to(point[0] - width / 2 - x_bearing,
point[1] - height / 2 - y_bearing)
ctx.show_text(uc)
def explain(self):
"""
post: len(__return__) == 3
"""
text = _('Font: ') + self.family + ', ' + unicode(self.size) + ', ' + \
_('A collection of characters from category : ') + \
unicode(self.category_list)
return text, \
None, \
None
def copy(self):
"""A copy constructor.
post: isinstance(__return__, GlyphStamp)
# check for distinct references, needs to copy content, not references
post: len(__return__.mapping) == len(self.mapping)
post: __return__ is not self
"""
new_one = GlyphStamp(self.get_trunk(), self.max_states)
new_one.size = self.size
new_one.family = self.family
new_one.category_list = self.category_list[:]
new_one.unichr_list = self.unichr_list[:]
new_one.mapping = self.mapping[:]
return new_one
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