525 lines
20 KiB
Python
525 lines
20 KiB
Python
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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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# For a detailed explanation of the parameters of this plugin, see :
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# https://gitlab.gnome.org/GNOME/pika/-/issues/4368#note_763460
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# little known, colorsys is part of Python's stdlib
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from colorsys import rgb_to_yiq
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from textwrap import dedent
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from random import randint
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import gi
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gi.require_version('Pika', '3.0')
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from gi.repository import Pika
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gi.require_version('PikaUi', '3.0')
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from gi.repository import PikaUi
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from gi.repository import GObject
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from gi.repository import GLib
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from gi.repository import Gio
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gi.require_version('Gtk', '3.0')
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from gi.repository import Gtk
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import sys
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def N_(message): return message
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def _(message): return GLib.dgettext(None, message)
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AVAILABLE_CHANNELS = (_("Red"), _("Green"), _("Blue"),
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_("Luma (Y)"),
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_("Hue"), _("Saturation"), _("Value"),
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_("Saturation (HSL)"), _("Lightness (HSL)"),
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_("Index"),
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_("Random"))
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channel_getters = [
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(lambda v, i: v.r),
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(lambda v, i: v.g),
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(lambda v, i: v.r),
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(lambda v, i: rgb_to_yiq(v.r, v.g, v.b)[0]),
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(lambda v, i: v.to_hsv().h),
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(lambda v, i: v.to_hsv().s),
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(lambda v, i: v.to_hsv().v),
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(lambda v, i: v.to_hsl().s),
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(lambda v, i: v.to_hsl().l),
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(lambda v, i: i),
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(lambda v, i: randint(0, 0x7fffffff))
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]
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GRAIN_SCALE = (1.0, 1.0 , 1.0,
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1.0,
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360., 100., 100.,
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100., 100.,
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16384.,
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float(0x7ffffff),
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100., 256., 256.,
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256., 360.,)
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SELECT_ALL = 0
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SELECT_SLICE = 1
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SELECT_AUTOSLICE = 2
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SELECT_PARTITIONED = 3
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SELECTIONS = (SELECT_ALL, SELECT_SLICE, SELECT_AUTOSLICE, SELECT_PARTITIONED)
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try:
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from colormath.color_objects import RGBColor, LabColor, LCHabColor
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def to_lab(v):
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return RGBColor(v.r, v.g, v.b).convert_to('LAB').get_value_tuple()
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def to_lchab(v):
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return RGBColor(v.r, v.g, v.b).convert_to('LCHab').get_value_tuple()
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AVAILABLE_CHANNELS = AVAILABLE_CHANNELS + (_("Lightness (LAB)"),
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_("A-color"), _("B-color"),
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_("Chroma (LCHab)"),
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_("Hue (LCHab)"))
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channel_getters.extend([
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(lambda v, i: to_lab(v)[0]),
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(lambda v, i: to_lab(v)[1]),
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(lambda v, i: to_lab(v)[2]),
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(lambda v, i: to_lchab(v)[1]),
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(lambda v, i: to_lchab(v)[2])
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])
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except ImportError:
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pass
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slice_expr_doc = """
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Format is 'start:nrows,length' . All items are optional.
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The empty string selects all items, as does ':'
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':4,' makes a 4-row selection out of all colors (length auto-determined)
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':4' also.
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':1,4' selects the first 4 colors
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':,4' selects rows of 4 colors (nrows auto-determined)
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':3,4' selects 3 rows of 4 colors
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'4:' selects a single row of all colors after 4, inclusive.
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'3:,4' selects rows of 4 colors, starting at 3 (nrows auto-determined)
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'2:3,4' selects 3 rows of 4 colors (12 colors total), beginning at index 2.
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'4' is illegal (ambiguous)
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"""
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def parse_slice(s, numcolors):
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"""Parse a slice spec and return (start, nrows, length)
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All items are optional. Omitting them makes the largest possible selection that
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exactly fits the other items.
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In general, slices are comparable to a numpy sub-array.
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'start at element START, with shape (NROWS, LENGTH)'
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"""
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s = s.strip()
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def notunderstood():
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raise ValueError('Slice %r not understood. Should be in format'
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' START?:NROWS?,ROWLENGTH? eg. "0:4,16".' % s)
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def _int(v):
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try:
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return int(v)
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except ValueError:
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notunderstood()
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if s in ('', ':', ':,'):
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return 0, 1, numcolors # entire palette, one row
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if s.count(':') != 1:
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notunderstood()
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rowpos = s.find(':')
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start = 0
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if rowpos > 0:
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start = _int(s[:rowpos])
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numcolors -= start
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nrows = 1
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if ',' in s:
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commapos = s.find(',')
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nrows = s[rowpos+1:commapos]
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length = s[commapos+1:]
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if not nrows:
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if not length:
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notunderstood()
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else:
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length = _int(length)
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if length == 0:
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notunderstood()
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nrows = numcolors // length
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if numcolors % length:
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nrows = -nrows
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elif not length:
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nrows = _int(nrows)
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if nrows == 0:
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notunderstood()
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length = numcolors // nrows
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if numcolors % nrows:
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length = -length
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else:
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nrows = _int(nrows)
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if nrows == 0:
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notunderstood()
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length = _int(length)
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if length == 0:
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notunderstood()
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else:
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nrows = _int(s[rowpos+1:])
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if nrows == 0:
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notunderstood()
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length = numcolors // nrows
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if numcolors % nrows:
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length = -length
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return start, nrows, length
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def quantization_grain(channel, g):
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"Given a channel and a quantization, return the size of a quantization grain"
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g = max(1.0, g)
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if g <= 1.0:
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g = 0.00001
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else:
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g = max(0.00001, GRAIN_SCALE[channel] / g)
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return g
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def palette_sort(palette, selection, slice_expr, channel1, ascending1,
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channel2, ascending2, quantize, pchannel, pquantize):
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grain1 = quantization_grain(channel1, quantize)
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grain2 = quantization_grain(channel2, quantize)
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pgrain = quantization_grain(pchannel, pquantize)
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# If palette is read only, work on a copy:
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editable = palette.is_editable()
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if not editable:
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palette = palette.duplicate()
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num_colors = palette.get_color_count()
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start, nrows, length = None, None, None
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if selection == SELECT_AUTOSLICE:
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def find_index(color, startindex=0):
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for i in range(startindex, num_colors):
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c = palette.entry_get_color(i)
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if c[1].r == color[1].r and c[1].g == color[1].g and c[1].b == color[1].b:
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return i
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return None
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def hexcolor(c):
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return "#%02x%02x%02x" % (int(255 * c[1].r), int(255 * c[1].b), int(255 * c[1].g))
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fg = Pika.context_get_foreground()
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bg = Pika.context_get_background()
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start = find_index(fg)
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end = find_index(bg)
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if start is None:
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raise ValueError("Couldn't find foreground color %s in palette" % hexcolor(fg))
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if end is None:
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raise ValueError("Couldn't find background color %s in palette" % hexcolor(bg))
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if find_index(fg, start + 1):
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raise ValueError('Autoslice cannot be used when more than one'
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' instance of an endpoint'
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' (%s) is present' % hexcolor(fg))
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if find_index(bg, end + 1):
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raise ValueError('Autoslice cannot be used when more than one'
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' instance of an endpoint'
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' (%s) is present' % hexcolor(bg))
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if start > end:
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end, start = start, end
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length = (end - start) + 1
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try:
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_, nrows, _ = parse_slice(slice_expr, length)
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nrows = abs(nrows)
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if length % nrows:
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raise ValueError('Total length %d not evenly divisible'
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' by number of rows %d' % (length, nrows))
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length //= nrows
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except ValueError:
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# bad expression is okay here, just assume one row
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nrows = 1
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# remaining behavior is implemented by SELECT_SLICE 'inheritance'.
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selection = SELECT_SLICE
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elif selection in (SELECT_SLICE, SELECT_PARTITIONED):
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start, nrows, length = parse_slice(slice_expr, num_colors)
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channels_getter_1 = channel_getters[channel1]
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channels_getter_2 = channel_getters[channel2]
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def get_colors(start, end):
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result = []
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for i in range(start, end):
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entry = (palette.entry_get_name(i)[1],
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palette.entry_get_color(i)[1])
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index1 = channels_getter_1(entry[1], i)
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index2 = channels_getter_2(entry[1], i)
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index = ((index1 - (index1 % grain1)) * (1 if ascending1 else -1),
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(index2 - (index2 % grain2)) * (1 if ascending2 else -1)
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)
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result.append((index, entry))
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return result
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if selection == SELECT_ALL:
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entry_list = get_colors(0, num_colors)
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entry_list.sort(key=lambda v: v[0])
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for i in range(num_colors):
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palette.entry_set_name(i, entry_list[i][1][0])
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palette.entry_set_color(i, entry_list[i][1][1])
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elif selection == SELECT_PARTITIONED:
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if num_colors < (start + length * nrows) - 1:
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raise ValueError('Not enough entries in palette to '
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'sort complete rows! Got %d, expected >=%d' %
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(num_colors, start + length * nrows))
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pchannels_getter = channel_getters[pchannel]
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for row in range(nrows):
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partition_spans = [1]
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rowstart = start + (row * length)
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old_color = palette.entry_get_color(rowstart)[1]
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old_partition = pchannels_getter(old_color, rowstart)
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old_partition = old_partition - (old_partition % pgrain)
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for i in range(rowstart + 1, rowstart + length):
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this_color = palette.entry_get_color(i)[1]
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this_partition = pchannels_getter(this_color, i)
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this_partition = this_partition - (this_partition % pgrain)
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if this_partition == old_partition:
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partition_spans[-1] += 1
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else:
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partition_spans.append(1)
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old_partition = this_partition
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base = rowstart
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for size in partition_spans:
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palette_sort(SELECT_SLICE, '%d:1,%d' % (base, size),
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channel1, ascending1,
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channel2, ascending2,
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quantize, 0, 1.0)
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base += size
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else:
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# SELECT_SLICE and SELECT_AUTOSLICE
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stride = length
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if num_colors < (start + stride * nrows) - 1:
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raise ValueError('Not enough entries in palette to sort '
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'complete rows! Got %d, expected >=%d' %
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(num_colors, start + stride * nrows))
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for row_start in range(start, start + stride * nrows, stride):
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sublist = get_colors(row_start, row_start + stride)
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sublist.sort(key=lambda v: v[0])
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for i, entry in zip(range(row_start, row_start + stride), sublist):
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palette.entry_set_name(i, entry[1][0])
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palette.entry_set_color(i, entry[1][1])
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return palette
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# FIXME: Write humanly readable help -
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# See for reference: https://gitlab.gnome.org/GNOME/pika/-/issues/4368#note_763460
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# Important to describe the general effect on palettes rather than details of the sort.
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help_doc = r"""
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Sorts a palette, or part of a palette.
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Sorts the given palette when it is editable, otherwise creates a new sorted palette.
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The default is a 1D sort, but you can also sort over two color channels
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or create a 2D sorted palette with sorted rows.
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You can optionally install colormath (https://pypi.python.org/pypi/colormath/1.0.8)
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to PIKA's Python to get even more channels to choose from.
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"""
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selections_option = [ _("All"), _("Slice / Array"), _("Autoslice (fg->bg)"), _("Partitioned") ]
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class PaletteSort (Pika.PlugIn):
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## Parameters ##
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__gproperties__ = {
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"run-mode": (Pika.RunMode,
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_("Run mode"),
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"The run mode",
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Pika.RunMode.INTERACTIVE,
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GObject.ParamFlags.READWRITE),
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"palette": (Pika.Palette,
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_("_Palette"),
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_("Palette"),
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GObject.ParamFlags.READWRITE),
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"selections": (int,
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_("Select_ions"),
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str(selections_option),
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0, 3, 0,
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||
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|
GObject.ParamFlags.READWRITE),
|
||
|
|
# TODO: It would be much simpler to replace the slice expression with three
|
||
|
|
# separate parameters: start-index, number-of-rows, row_length
|
||
|
|
"slice_expr": (str,
|
||
|
|
_("Slice _expression"),
|
||
|
|
slice_expr_doc,
|
||
|
|
"",
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
"channel1": (int,
|
||
|
|
_("Channel _to sort"),
|
||
|
|
"Channel to sort: " + str(AVAILABLE_CHANNELS),
|
||
|
|
0, len(AVAILABLE_CHANNELS), 3,
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
"ascending1": (bool,
|
||
|
|
_("_Ascending"),
|
||
|
|
_("Ascending"),
|
||
|
|
True,
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
"channel2": (int,
|
||
|
|
_("Secondary C_hannel to sort"),
|
||
|
|
"Secondary Channel to sort: " + str(AVAILABLE_CHANNELS),
|
||
|
|
0, len(AVAILABLE_CHANNELS), 5,
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
"ascending2": (bool,
|
||
|
|
_("Ascen_ding"),
|
||
|
|
_("Ascending"),
|
||
|
|
True,
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
"quantize": (float,
|
||
|
|
_("_Quantization"),
|
||
|
|
_("Quantization"),
|
||
|
|
0.0, 1.0, 0.0,
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
"pchannel": (int,
|
||
|
|
_("_Partitioning channel"),
|
||
|
|
"Partitioning channel: " + str(AVAILABLE_CHANNELS),
|
||
|
|
0, len(AVAILABLE_CHANNELS), 3,
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
"pquantize": (float,
|
||
|
|
_("Partition q_uantization"),
|
||
|
|
_("Partition quantization"),
|
||
|
|
0.0, 1.0, 0.0,
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
|
||
|
|
# Returned value
|
||
|
|
"new_palette": (Pika.Palette,
|
||
|
|
_("Palette"),
|
||
|
|
_("Palette"),
|
||
|
|
GObject.ParamFlags.READWRITE),
|
||
|
|
}
|
||
|
|
|
||
|
|
## PikaPlugIn virtual methods ##
|
||
|
|
def do_set_i18n(self, procname):
|
||
|
|
return True, 'pika30-python', None
|
||
|
|
|
||
|
|
def do_query_procedures(self):
|
||
|
|
return ["python-fu-palette-sort"]
|
||
|
|
|
||
|
|
def do_create_procedure(self, name):
|
||
|
|
procedure = None
|
||
|
|
if name == "python-fu-palette-sort":
|
||
|
|
procedure = Pika.Procedure.new(self, name,
|
||
|
|
Pika.PDBProcType.PLUGIN,
|
||
|
|
self.run, None)
|
||
|
|
procedure.set_menu_label(_("_Sort Palette..."))
|
||
|
|
procedure.set_documentation(
|
||
|
|
_("Sort the colors in a palette"),
|
||
|
|
help_doc,
|
||
|
|
""
|
||
|
|
)
|
||
|
|
procedure.set_attribution("João S. O. Bueno, Carol Spears, David Gowers",
|
||
|
|
"João S. O. Bueno, Carol Spears, David Gowers",
|
||
|
|
"2006-2014")
|
||
|
|
procedure.add_menu_path ('<Palettes>')
|
||
|
|
|
||
|
|
procedure.add_argument_from_property(self, "run-mode")
|
||
|
|
procedure.add_argument_from_property(self, "palette")
|
||
|
|
procedure.add_argument_from_property(self, "selections")
|
||
|
|
procedure.add_argument_from_property(self, "slice_expr")
|
||
|
|
procedure.add_argument_from_property(self, "channel1")
|
||
|
|
procedure.add_argument_from_property(self, "ascending1")
|
||
|
|
procedure.add_argument_from_property(self, "channel2")
|
||
|
|
procedure.add_argument_from_property(self, "ascending2")
|
||
|
|
procedure.add_argument_from_property(self, "quantize")
|
||
|
|
procedure.add_argument_from_property(self, "pchannel")
|
||
|
|
procedure.add_argument_from_property(self, "pquantize")
|
||
|
|
procedure.add_return_value_from_property(self, "new_palette")
|
||
|
|
|
||
|
|
return procedure
|
||
|
|
|
||
|
|
def run(self, procedure, args, data):
|
||
|
|
config = procedure.create_config()
|
||
|
|
config.begin_run(None, Pika.RunMode.INTERACTIVE, args)
|
||
|
|
|
||
|
|
run_mode = args.index(0)
|
||
|
|
palette = args.index(1)
|
||
|
|
selection = args.index(2)
|
||
|
|
slice_expr = args.index(3)
|
||
|
|
channel1 = args.index(4)
|
||
|
|
ascending1 = args.index(5)
|
||
|
|
channel2 = args.index(6)
|
||
|
|
ascending2 = args.index(7)
|
||
|
|
quantize = args.index(8)
|
||
|
|
pchannel = args.index(9)
|
||
|
|
pquantize = args.index(10)
|
||
|
|
|
||
|
|
if palette is None or not palette.is_valid():
|
||
|
|
if palette is not None:
|
||
|
|
sys.stderr.write(f'Invalid palette id: {palette.get_id()}\n')
|
||
|
|
sys.stderr.write('This should not happen. Please report to PIKA project.\n')
|
||
|
|
sys.stderr.write('Falling back to context palette instead.\n')
|
||
|
|
palette = Pika.context_get_palette()
|
||
|
|
|
||
|
|
if not palette.is_valid():
|
||
|
|
palette_name = palette.get_id()
|
||
|
|
error = f'Invalid palette id: {palette_name}'
|
||
|
|
return procedure.new_return_values(Pika.PDBStatusType.CALLING_ERROR,
|
||
|
|
GLib.Error(error))
|
||
|
|
|
||
|
|
if run_mode == Pika.RunMode.INTERACTIVE:
|
||
|
|
PikaUi.init('python-fu-palette-sort')
|
||
|
|
dialog = PikaUi.ProcedureDialog(procedure=procedure, config=config)
|
||
|
|
|
||
|
|
dialog.fill (["palette"])
|
||
|
|
dialog.get_int_combo("selections", PikaUi.IntStore.new (selections_option))
|
||
|
|
dialog.fill (["selections","slice-expr"])
|
||
|
|
dialog.get_int_combo("channel1", PikaUi.IntStore.new (AVAILABLE_CHANNELS))
|
||
|
|
dialog.fill (["channel1", "ascending1"])
|
||
|
|
dialog.get_int_combo("channel2", PikaUi.IntStore.new (AVAILABLE_CHANNELS))
|
||
|
|
dialog.fill (["channel2","ascending2", "quantize"])
|
||
|
|
dialog.get_int_combo("pchannel", PikaUi.IntStore.new (AVAILABLE_CHANNELS))
|
||
|
|
dialog.fill (["pchannel","pquantize"])
|
||
|
|
|
||
|
|
if not dialog.run():
|
||
|
|
dialog.destroy()
|
||
|
|
config.end_run(Pika.PDBStatusType.CANCEL)
|
||
|
|
return procedure.new_return_values(Pika.PDBStatusType.CANCEL, GLib.Error())
|
||
|
|
else:
|
||
|
|
palette = config.get_property("palette")
|
||
|
|
selection = config.get_property("selections")
|
||
|
|
slice_expr = config.get_property ("slice_expr")
|
||
|
|
channel1 = config.get_property("channel1")
|
||
|
|
ascending1 = config.get_property ("ascending1")
|
||
|
|
channel2 = config.get_property("channel2")
|
||
|
|
ascending2 = config.get_property ("ascending2")
|
||
|
|
quantize = config.get_property ("quantize")
|
||
|
|
pchannel = config.get_property("pchannel")
|
||
|
|
pquantize = config.get_property ("pquantize")
|
||
|
|
|
||
|
|
dialog.destroy()
|
||
|
|
|
||
|
|
try:
|
||
|
|
new_palette = palette_sort(palette, selection, slice_expr, channel1, ascending1,
|
||
|
|
channel2, ascending2, quantize, pchannel, pquantize)
|
||
|
|
except ValueError as err:
|
||
|
|
return procedure.new_return_values(Pika.PDBStatusType.EXECUTION_ERROR,
|
||
|
|
GLib.Error(str(err)))
|
||
|
|
|
||
|
|
config.end_run(Pika.PDBStatusType.SUCCESS)
|
||
|
|
|
||
|
|
return_val = procedure.new_return_values(Pika.PDBStatusType.SUCCESS, GLib.Error())
|
||
|
|
value = GObject.Value(Pika.Palette, new_palette)
|
||
|
|
return_val.remove(1)
|
||
|
|
return_val.insert(1, value)
|
||
|
|
return return_val
|
||
|
|
|
||
|
|
|
||
|
|
Pika.main(PaletteSort.__gtype__, sys.argv)
|
