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Diffstat (limited to 'exon_color.py')
| -rw-r--r-- | exon_color.py | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/exon_color.py b/exon_color.py new file mode 100644 index 0000000..cf3150d --- /dev/null +++ b/exon_color.py @@ -0,0 +1,135 @@ +# coding: UTF8 +# Copyright 2009 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 random +import cairo +import ka_extensionpoint +import ka_random +import model_constraintpool +import model_allele + +EPSILON = 0.00001 +COLOR_CONSTRAINT = 'colorconstraint' + +class Color(model_allele.Allele): + """Color + inv: len(self.rgba) == 4 + inv: 0.0 <= self.rgba[0] <= 1.0 + inv: 0.0 <= self.rgba[1] <= 1.0 + inv: 0.0 <= self.rgba[2] <= 1.0 + inv: 0.0 <= self.rgba[3] <= 1.0 + """ + + cdef = [{'bind' : COLOR_CONSTRAINT, + 'name' : 'Color constraint', + 'domain': model_constraintpool.STRING_1_OF_N, + 'enum' : ka_extensionpoint.list_extensions(COLOR_CONSTRAINT) + }, + ] + + def __init__(self, trunk, red, green, blue, alpha): + """Color constructor + pre: 0.0 <= red <= 1.0 + pre: 0.0 <= green <= 1.0 + pre: 0.0 <= blue <= 1.0 + pre: 0.0 <= alpha <= 1.0 + """ + super(Color, self).__init__(trunk) + cpool = model_constraintpool.ConstraintPool.get_pool() + constraint_name = cpool.get(self, COLOR_CONSTRAINT)[0] + self.constraint = ka_extensionpoint.create(constraint_name, self.path) + self.rgba = self.constraint.filter((red, green, blue, alpha)) + + def __eq__(self, other): + """Equality based on color components.""" + return isinstance(other, Color) \ + and abs(self.rgba[0] - other.rgba[0]) < EPSILON \ + and abs(self.rgba[1] - other.rgba[1]) < EPSILON \ + and abs(self.rgba[2] - other.rgba[2]) < EPSILON \ + and abs(self.rgba[3] - other.rgba[3]) < EPSILON + + def randomize(self): + """Set red, green, blue and alpha to random values.""" + cpool = model_constraintpool.ConstraintPool.get_pool() + constraints = cpool.get(self, COLOR_CONSTRAINT) + self.constraint = ka_extensionpoint.create(random.choice(constraints), self.path) + self.rgba = self.constraint.randomize() + + def mutate(self): + """Make small random changes in hue, lightness, saturation.""" + if ka_random.is_mutating(): + if ka_random.is_mutating(): + cpool = model_constraintpool.ConstraintPool.get_pool() + constraints = cpool.get(self, COLOR_CONSTRAINT) + self.constraint = ka_extensionpoint.create(random.choice(constraints), self.path) + self.rgba = self.constraint.mutate(self.rgba) + + def shuffle(self): + """Not implemented.""" + pass + + def crossingover(self, other): + """Returns either a copy of self or a copy of other. + pre: isinstance(other, Color) + # check for distinct references, needs to copy content, not references + post: __return__ is not self + post: __return__ is not other + """ + randseq = ka_random.crossing_sequence(1) + return self.copy() if randseq[0] else other.copy() + + def copy(self): + """A color copy constructor + post: isinstance(__return__, Color) + # check for distinct references, needs to copy content, not references + post: __return__ is not self + """ + new_one = Color(self.get_trunk(), 0.0, 0.0, 0.0, 0.0) + new_one.rgba = (self.rgba[0], self.rgba[1], self.rgba[2], self.rgba[3]) + new_one.constraint = self.constraint + return new_one + + def explain(self, alfa=True): + return self.constraint.explain(self.rgba, alfa) + + @staticmethod + def make_icon(rgba, alfa, width, height): + surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height) + ctx = cairo.Context(surface) + if alfa: + # paint checker board background + steps = 4 + delta = (1.0 * width) / (1.0 * steps) + ctx.set_operator(cairo.OPERATOR_SOURCE) + for row in range(steps): + for col in range(steps): + ctx.rectangle(col * delta, row * delta, delta, delta) + if (col + row) % 2 == 0: + ctx.set_source_rgb(0.4, 0.4, 0.4) + else: + ctx.set_source_rgb(0.6, 0.6, 0.6) + ctx.fill() + # paint color and alfa + ctx.set_operator(cairo.OPERATOR_OVER) + ctx.set_source_rgba(rgba[0], rgba[1], rgba[2], rgba[3]) + else: + # paint color + ctx.set_operator(cairo.OPERATOR_OVER) + ctx.set_source_rgb(rgba[0], rgba[1], rgba[2]) + ctx.paint() + return surface + |