3945701bd6
It's a bit weird because this has to happen during the query() step, but plug-ins don't have access to this step anymore, apart from query_procedures(), which then turns out to be badly named.
132 lines
5.8 KiB
Python
132 lines
5.8 KiB
Python
#!/usr/bin/env python3
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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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import gi
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gi.require_version('Gimp', '3.0')
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from gi.repository import Gimp
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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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import sys
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import gettext
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_ = gettext.gettext
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def N_(message): return message
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def make_gradient(palette, num_segments, num_colors):
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gradient = Gimp.gradient_new(palette)
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if (num_segments > 1):
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Gimp.gradient_segment_range_split_uniform(gradient, 0, -1,
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num_segments)
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for color_number in range(0,num_segments):
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if color_number == num_colors - 1:
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color_number_next = 0
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else:
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color_number_next = color_number + 1
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_, color_left = Gimp.palette_entry_get_color(palette, color_number)
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_, color_right = Gimp.palette_entry_get_color(palette, color_number_next)
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Gimp.gradient_segment_set_left_color(gradient,
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color_number, color_left,
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100.0)
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Gimp.gradient_segment_set_right_color(gradient,
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color_number, color_right,
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100.0)
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Gimp.context_set_gradient(gradient)
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retval = [Gimp.param_from_status (Gimp.PDBStatusType.SUCCESS),
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Gimp.param_from_string(gradient)]
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return len(retval), retval
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def palette_to_gradient(procedure, args, data):
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palette = Gimp.context_get_palette()
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(_, num_colors) = Gimp.palette_get_info(palette)
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if procedure.get_name() == 'python-fu-palette-to-gradient':
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num_segments = num_colors - 1
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else: # 'python-fu-palette-to-gradient-repeating'
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num_segments = num_colors
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gradient = make_gradient(palette, num_segments, num_colors)
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# XXX: for the error parameter, we want to return None.
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# Unfortunately even though the argument is (nullable), pygobject
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# looks like it may have a bug. So workaround is to just set a
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# generic GLib.Error() since anyway the error won't be process with
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# GIMP_PDB_SUCCESS status.
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# See pygobject#351
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retval = procedure.new_return_values(Gimp.PDBStatusType.SUCCESS, GLib.Error())
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# TODO: uncomment when GParamSpec bug is fixed.
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#value = retval.index(1)
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#value.set_string (gradient);
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return retval
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class PaletteToGradient (Gimp.PlugIn):
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def do_query_procedures(self):
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# Localization
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self.set_translation_domain ("gimp30-python",
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Gio.file_new_for_path(Gimp.locale_directory()))
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# XXX See pygobject#352 for the weird return value.
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return ['python-fu-palette-to-gradient',
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'python-fu-palette-to-gradient-repeating'], 2
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def do_create_procedure(self, name):
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procedure = Gimp.Procedure.new(self, name,
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Gimp.PDBProcType.PLUGIN,
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palette_to_gradient, None)
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if name == 'python-fu-palette-to-gradient':
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procedure.set_menu_label(N_("Palette to _Gradient"))
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procedure.set_documentation(N_("Create a gradient using colors from the palette"),
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"Create a new gradient using colors from the palette.",
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"")
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elif name == 'python-fu-palette-to-gradient-repeating':
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procedure.set_menu_label(N_("Palette to _Repeating Gradient"))
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procedure.set_documentation(N_("Create a repeating gradient using colors from the palette"),
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"Create a new repeating gradient using colors from the palette.",
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"")
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else:
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procedure = None
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if procedure is not None:
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procedure.set_attribution("Carol Spears, reproduced from previous work by Adrian Likins and Jeff Trefftz",
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"Carol Spears", "2006")
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returnspec = GObject.param_spec_string("new-gradient",
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"Name of the newly created gradient",
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"Name of the newly created gradient",
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None,
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GObject.ParamFlags.READWRITE)
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# Passing a GObjectParamSpec currently fails.
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# TODO: see pygobject#227
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#procedure.add_return_value(returnspec)
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paramspec = GObject.param_spec_enum("run-mode",
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"Run mode",
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"The run mode",
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Gimp.RunMode.__gtype__,
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Gimp.RunMode.NONINTERACTIVE,
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GObject.ParamFlags.READWRITE)
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# TODO: see pygobject#227
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#procedure.add_argument(paramspec)
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# TODO: To be installed in '<Palettes>', we need a run mode
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# parameter. Wait for the GParamSpec bug to be fixed before
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# uncommenting.
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#procedure.add_menu_path ('<Palettes>')
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return procedure
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Gimp.main(PaletteToGradient.__gtype__, sys.argv)
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