Mini Kabibi Habibi
#!/usr/bin/env python2
# -*- coding: utf-8 -*-
#
# 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, see <https://www.gnu.org/licenses/>.
from gimpfu import *
# little known, colorsys is part of Python's stdlib
from colorsys import rgb_to_yiq
from textwrap import dedent
from random import randint
gettext.install("gimp20-python", gimp.locale_directory, unicode=True)
AVAILABLE_CHANNELS = (_("Red"), _("Green"), _("Blue"),
_("Luma (Y)"),
_("Hue"), _("Saturation"), _("Value"),
_("Saturation (HSL)"), _("Lightness (HSL)"),
_("Index"),
_("Random"))
GRAIN_SCALE = (1.0, 1.0 , 1.0,
1.0,
360., 100., 100.,
100., 100.,
16384.,
float(0x7ffffff),
100., 256., 256.,
256., 360.,)
SELECT_ALL = 0
SELECT_SLICE = 1
SELECT_AUTOSLICE = 2
SELECT_PARTITIONED = 3
SELECTIONS = (SELECT_ALL, SELECT_SLICE, SELECT_AUTOSLICE, SELECT_PARTITIONED)
def noop(v, i):
return v
def to_hsv(v, i):
return v.to_hsv()
def to_hsl(v, i):
return v.to_hsl()
def to_yiq(v, i):
return rgb_to_yiq(*v[:-1])
def to_index(v, i):
return (i,)
def to_random(v, i):
return (randint(0, 0x7fffffff),)
channel_getters = [ (noop, 0), (noop, 1), (noop, 2),
(to_yiq, 0),
(to_hsv, 0), (to_hsv, 1), (to_hsv, 2),
(to_hsl, 1), (to_hsl, 2),
(to_index, 0),
(to_random, 0)]
try:
from colormath.color_objects import RGBColor, LabColor, LCHabColor
AVAILABLE_CHANNELS = AVAILABLE_CHANNELS + (_("Lightness (LAB)"),
_("A-color"), _("B-color"),
_("Chroma (LCHab)"),
_("Hue (LCHab)"))
to_lab = lambda v,i: RGBColor(*v[:-1]).convert_to('LAB').get_value_tuple()
to_lchab = (lambda v,i:
RGBColor(*v[:-1]).convert_to('LCHab').get_value_tuple())
channel_getters.extend([(to_lab, 0), (to_lab, 1), (to_lab, 2),
(to_lchab, 1), (to_lchab, 2)])
except ImportError:
pass
def parse_slice(s, numcolors):
"""Parse a slice spec and return (start, nrows, length)
All items are optional. Omitting them makes the largest possible selection that
exactly fits the other items.
start:nrows,length
'' selects all items, as does ':'
':4,' makes a 4-row selection out of all colors (length auto-determined)
':4' also.
':1,4' selects the first 4 colors
':,4' selects rows of 4 colors (nrows auto-determined)
':4,4' selects 4 rows of 4 colors
'4:' selects a single row of all colors after 4, inclusive.
'4:,4' selects rows of 4 colors, starting at 4 (nrows auto-determined)
'4:4,4' selects 4 rows of 4 colors (16 colors total), beginning at index 4.
'4' is illegal (ambiguous)
In general, slices are comparable to a numpy sub-array.
'start at element START, with shape (NROWS, LENGTH)'
"""
s = s.strip()
def notunderstood():
raise ValueError('Slice %r not understood. Should be in format'
' START?:NROWS?,ROWLENGTH? eg. "0:4,16".' % s)
def _int(v):
try:
return int(v)
except ValueError:
notunderstood()
if s in ('', ':', ':,'):
return 0, 1, numcolors # entire palette, one row
if s.count(':') != 1:
notunderstood()
rowpos = s.find(':')
start = 0
if rowpos > 0:
start = _int(s[:rowpos])
numcolors -= start
nrows = 1
if ',' in s:
commapos = s.find(',')
nrows = s[rowpos+1:commapos]
length = s[commapos+1:]
if not nrows:
if not length:
notunderstood()
else:
length = _int(length)
if length == 0:
notunderstood()
nrows = numcolors // length
if numcolors % length:
nrows = -nrows
elif not length:
nrows = _int(nrows)
if nrows == 0:
notunderstood()
length = numcolors // nrows
if numcolors % nrows:
length = -length
else:
nrows = _int(nrows)
if nrows == 0:
notunderstood()
length = _int(length)
if length == 0:
notunderstood()
else:
nrows = _int(s[rowpos+1:])
if nrows == 0:
notunderstood()
length = numcolors // nrows
if numcolors % nrows:
length = -length
return start, nrows, length
def quantization_grain(channel, g):
"Given a channel and a quantization, return the size of a quantization grain"
g = max(1.0, g)
if g <= 1.0:
g = 0.00001
else:
g = max(0.00001, GRAIN_SCALE[channel] / g)
return g
def palette_sort(palette, selection, slice_expr, channel1, ascending1,
channel2, ascending2, quantize, pchannel, pquantize):
grain1 = quantization_grain(channel1, quantize)
grain2 = quantization_grain(channel2, quantize)
pgrain = quantization_grain(pchannel, pquantize)
#If palette is read only, work on a copy:
editable = pdb.gimp_palette_is_editable(palette)
if not editable:
palette = pdb.gimp_palette_duplicate (palette)
num_colors = pdb.gimp_palette_get_info (palette)
start, nrows, length = None, None, None
if selection == SELECT_AUTOSLICE:
def find_index(color, startindex=0):
for i in range(startindex, num_colors):
c = pdb.gimp_palette_entry_get_color (palette, i)
if c == color:
return i
return None
def hexcolor(c):
return "#%02x%02x%02x" % tuple(c[:-1])
fg = pdb.gimp_context_get_foreground()
bg = pdb.gimp_context_get_background()
start = find_index(fg)
end = find_index(bg)
if start is None:
raise ValueError("Couldn't find foreground color %r in palette" % list(fg))
if end is None:
raise ValueError("Couldn't find background color %r in palette" % list(bg))
if find_index(fg, start + 1):
raise ValueError('Autoslice cannot be used when more than one'
' instance of an endpoint'
' (%s) is present' % hexcolor(fg))
if find_index(bg, end + 1):
raise ValueError('Autoslice cannot be used when more than one'
' instance of an endpoint'
' (%s) is present' % hexcolor(bg))
if start > end:
end, start = start, end
length = (end - start) + 1
try:
_, nrows, _ = parse_slice(slice_expr, length)
nrows = abs(nrows)
if length % nrows:
raise ValueError('Total length %d not evenly divisible'
' by number of rows %d' % (length, nrows))
length /= nrows
except ValueError:
# bad expression is okay here, just assume one row
nrows = 1
# remaining behaviour is implemented by SELECT_SLICE 'inheritance'.
selection= SELECT_SLICE
elif selection in (SELECT_SLICE, SELECT_PARTITIONED):
start, nrows, length = parse_slice(slice_expr, num_colors)
channels_getter_1, channel_index = channel_getters[channel1]
channels_getter_2, channel2_index = channel_getters[channel2]
def get_colors(start, end):
result = []
for i in range(start, end):
entry = (pdb.gimp_palette_entry_get_name (palette, i),
pdb.gimp_palette_entry_get_color (palette, i))
index1 = channels_getter_1(entry[1], i)[channel_index]
index2 = channels_getter_2(entry[1], i)[channel2_index]
index = ((index1 - (index1 % grain1)) * (1 if ascending1 else -1),
(index2 - (index2 % grain2)) * (1 if ascending2 else -1)
)
result.append((index, entry))
return result
if selection == SELECT_ALL:
entry_list = get_colors(0, num_colors)
entry_list.sort(key=lambda v:v[0])
for i in range(num_colors):
pdb.gimp_palette_entry_set_name (palette, i, entry_list[i][1][0])
pdb.gimp_palette_entry_set_color (palette, i, entry_list[i][1][1])
elif selection == SELECT_PARTITIONED:
if num_colors < (start + length * nrows) - 1:
raise ValueError('Not enough entries in palette to '
'sort complete rows! Got %d, expected >=%d' %
(num_colors, start + length * nrows))
pchannels_getter, pchannel_index = channel_getters[pchannel]
for row in range(nrows):
partition_spans = [1]
rowstart = start + (row * length)
old_color = pdb.gimp_palette_entry_get_color (palette,
rowstart)
old_partition = pchannels_getter(old_color, rowstart)[pchannel_index]
old_partition = old_partition - (old_partition % pgrain)
for i in range(rowstart + 1, rowstart + length):
this_color = pdb.gimp_palette_entry_get_color (palette, i)
this_partition = pchannels_getter(this_color, i)[pchannel_index]
this_partition = this_partition - (this_partition % pgrain)
if this_partition == old_partition:
partition_spans[-1] += 1
else:
partition_spans.append(1)
old_partition = this_partition
base = rowstart
for size in partition_spans:
palette_sort(palette, SELECT_SLICE, '%d:1,%d' % (base, size),
channel1, ascending1, channel2, ascending2,
quantize, 0, 1.0)
base += size
else:
stride = length
if num_colors < (start + stride * nrows) - 1:
raise ValueError('Not enough entries in palette to sort '
'complete rows! Got %d, expected >=%d' %
(num_colors, start + stride * nrows))
for row_start in range(start, start + stride * nrows, stride):
sublist = get_colors(row_start, row_start + stride)
sublist.sort(key=lambda v:v[0])
for i, entry in zip(range(row_start, row_start + stride), sublist):
pdb.gimp_palette_entry_set_name (palette, i, entry[1][0])
pdb.gimp_palette_entry_set_color (palette, i, entry[1][1])
return palette
register(
"python-fu-palette-sort",
N_("Sort the colors in a palette"),
# FIXME: Write humanly readable help -
# (I can't figure out what the plugin does, or how to use the parameters after
# David's enhancements even looking at the code -
# let alone someone just using GIMP (JS) )
dedent("""\
palette_sort (palette, selection, slice_expr, channel,
channel2, quantize, ascending, pchannel, pquantize) -> new_palette
Sorts a palette, or part of a palette, using several options.
One can select two color channels over which to sort,
and several auxiliary parameters create a 2D sorted
palette with sorted rows, among other things.
One can optionally install colormath
(https://pypi.python.org/pypi/colormath/1.0.8)
to GIMP's Python to get even more channels to choose from.
"""),
"João S. O. Bueno, Carol Spears, David Gowers",
"João S. O. Bueno, Carol Spears, David Gowers",
"2006-2014",
N_("_Sort Palette..."),
"",
[
(PF_PALETTE, "palette", _("Palette"), ""),
(PF_OPTION, "selections", _("Se_lections"), SELECT_ALL,
(_("All"), _("Slice / Array"), _("Autoslice (fg->bg)"),
_("Partitioned"))),
(PF_STRING, "slice-expr", _("Slice _expression"), ''),
(PF_OPTION, "channel1", _("Channel to _sort"), 3,
AVAILABLE_CHANNELS),
(PF_BOOL, "ascending1", _("_Ascending"), True),
(PF_OPTION, "channel2", _("Secondary Channel to s_ort"), 5,
AVAILABLE_CHANNELS),
(PF_BOOL, "ascending2", _("_Ascending"), True),
(PF_FLOAT, "quantize", _("_Quantization"), 0.0),
(PF_OPTION, "pchannel", _("_Partitioning channel"), 3,
AVAILABLE_CHANNELS),
(PF_FLOAT, "pquantize", _("Partition q_uantization"), 0.0),
],
[],
palette_sort,
menu="<Palettes>",
domain=("gimp20-python", gimp.locale_directory)
)
main ()