Giant blob of minor changes

[dotfiles/.git] / .config / GIMP / 2.10 / plug-ins / plugin-heal-transparency.py

diff --git a/.config/GIMP/2.10/plug-ins/plugin-heal-transparency.py b/.config/GIMP/2.10/plug-ins/plugin-heal-transparency.py
new file mode 100755 (executable)
index 0000000..31799fc
--- /dev/null
+++ b/.config/GIMP/2.10/plug-ins/plugin-heal-transparency.py
@@ -0,0 +1,92 @@
+#!/usr/bin/env python
+
+'''
+Gimp plugin "Heal transparency"
+
+Copyright 2010 lloyd konneker (bootch at nc.rr.com)
+
+Version:
+  1.0 lloyd konneker lkk 2010 Initial version in python.
+
+License:
+
+  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 2 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.
+
+  The GNU Public License is available at
+  http://www.gnu.org/copyleft/gpl.html
+  
+'''
+
+from gimpfu import *
+
+gettext.install("resynthesizer", gimp.locale_directory, unicode=True)
+
+def heal_transparency(timg, tdrawable, samplingRadiusParam=50, orderParam=2):
+
+  # precondition should be enforced by Gimp according to image modes allowed.
+  if not pdb.gimp_drawable_has_alpha(tdrawable):
+    pdb.gimp_message("The active layer has no alpha channel to heal.")
+    return
+  
+  pdb.gimp_image_undo_group_start(timg)
+  
+  # save selection for later restoration.
+  # Saving selection channel makes it active, so we must save and restore the active layer
+  org_selection = pdb.gimp_selection_save(timg)
+  pdb.gimp_image_set_active_layer(timg, tdrawable)
+  
+  # alpha to selection
+  pdb.gimp_image_select_item(timg, CHANNEL_OP_REPLACE, tdrawable)
+  # Want the transparent, not the opaque.  
+  pdb.gimp_selection_invert(timg)
+  # Since transparency was probably anti-aliased (dithered with partial transpancy),
+  # grow the selection to get past the dithering.
+  pdb.gimp_selection_grow(timg, 1)
+  # Remove the alpha from this layer. IE compose with current background color (often white.)
+  # Resynthesizer won't heal transparent.
+  pdb.gimp_layer_flatten(tdrawable)
+  
+  # Call heal selection (not the resynthesizer), which will create a proper corpus.
+  # 0 = sample from all around
+  pdb.python_fu_heal_selection(timg, tdrawable, samplingRadiusParam, 0, orderParam, run_mode=RUN_NONINTERACTIVE)
+ 
+  # Restore image to initial conditions of user, except for later cleanup.
+  
+  # restore selection
+  pdb.gimp_image_select_item(timg, CHANNEL_OP_REPLACE, org_selection)
+ 
+  # Clean up (comment out to debug)
+  pdb.gimp_image_undo_group_end(timg)
+
+
+register(
+  "python_fu_heal_transparency",
+  N_("Removes alpha channel by synthesis.  Fill outward for edges, inward for holes."),
+  "Requires separate resynthesizer plugin.",
+  "Lloyd Konneker",
+  "Copyright 2010 Lloyd Konneker",
+  "2010",
+  N_("Heal transparency..."),
+  "RGBA, GRAYA",  # !!! Requires an alpha channel to heal
+  [
+    (PF_IMAGE, "image",       "Input image", None),
+    (PF_DRAWABLE, "drawable", "Input drawable", None),
+    (PF_INT, "samplingRadiusParam", _("Context sampling width (pixels):"), 50),
+    (PF_OPTION, "orderParam",   _("Filling order:"), 2, [_("Random"),
+      _("Inwards towards center"), _("Outwards from center") ])
+  ],
+  [],
+  heal_transparency,
+  menu="<Image>/Filters/Enhance",
+  domain=("resynthesizer", gimp.locale_directory)
+  )
+
+main()