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102 lines
3.2 KiB
Python
102 lines
3.2 KiB
Python
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#!/usr/bin/env python
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"""
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Gimp plugin "Heal transparency"
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Copyright 2010 lloyd konneker (bootch at nc.rr.com)
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Version:
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1.0 lloyd konneker lkk 2010 Initial version in python.
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License:
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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 2 of the License, or
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(at your option) any later version.
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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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The GNU Public License is available at
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http://www.gnu.org/copyleft/gpl.html
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"""
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from gimpfu import *
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gettext.install("resynthesizer", gimp.locale_directory, unicode=True)
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def heal_transparency(timg, tdrawable, samplingRadiusParam=50, orderParam=2):
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# precondition should be enforced by Gimp according to image modes allowed.
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if not pdb.gimp_drawable_has_alpha(tdrawable):
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pdb.gimp_message("The active layer has no alpha channel to heal.")
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return
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pdb.gimp_image_undo_group_start(timg)
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# save selection for later restoration.
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# Saving selection channel makes it active, so we must save and restore the active layer
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org_selection = pdb.gimp_selection_save(timg)
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pdb.gimp_image_set_active_layer(timg, tdrawable)
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# alpha to selection
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pdb.gimp_selection_layer_alpha(tdrawable)
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# Want the transparent, not the opaque.
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pdb.gimp_selection_invert(timg)
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# Since transparency was probably anti-aliased (dithered with partial transpancy),
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# grow the selection to get past the dithering.
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pdb.gimp_selection_grow(timg, 1)
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# Remove the alpha from this layer. IE compose with current background color (often white.)
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# Resynthesizer won't heal transparent.
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pdb.gimp_layer_flatten(tdrawable)
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# Call heal selection (not the resynthesizer), which will create a proper corpus.
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# 0 = sample from all around
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pdb.python_fu_heal_selection(
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timg, tdrawable, samplingRadiusParam, 0, orderParam, run_mode=RUN_NONINTERACTIVE
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)
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# Restore image to initial conditions of user, except for later cleanup.
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# restore selection
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pdb.gimp_selection_load(org_selection)
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# Clean up (comment out to debug)
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pdb.gimp_image_undo_group_end(timg)
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register(
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"python_fu_heal_transparency",
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N_(
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"Removes alpha channel by synthesis. Fill outward for edges, inward for holes."
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),
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"Requires separate resynthesizer plugin.",
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"Lloyd Konneker",
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"Copyright 2010 Lloyd Konneker",
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"2010",
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N_("Heal transparency..."),
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"RGBA, GRAYA", # !!! Requires an alpha channel to heal
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[
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(PF_IMAGE, "image", "Input image", None),
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(PF_DRAWABLE, "drawable", "Input drawable", None),
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(PF_INT, "samplingRadiusParam", _("Context sampling width (pixels):"), 50),
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(
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PF_OPTION,
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"orderParam",
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_("Filling order:"),
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2,
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[_("Random"), _("Inwards towards center"), _("Outwards from center")],
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),
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],
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[],
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heal_transparency,
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menu="<Image>/Filters/Enhance",
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domain=("resynthesizer", gimp.locale_directory),
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)
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main()
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