17667b7ddf
Several aspects of the new API are kind of broken in the Python binding, especially the arguments. So this first version has no arguments at all. This also means it cannot be installed in "<Palettes>" menu for the time being. This is work-in-progress and the missing parts will be uncommented later when we figure out how to fix the problems.
133 lines
5.9 KiB
Python
133 lines
5.9 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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# Localization
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plug_in = procedure.get_plug_in()
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plug_in.set_translation_domain ("gimp30-python",
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Gio.file_new_for_path(Gimp.locale_directory()))
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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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# 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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