1 files changed, 88 insertions, 0 deletions
diff --git a/plug-ins/pygimp/plug-ins/palette-to-gradient.py b/plug-ins/pygimp/plug-ins/palette-to-gradient.py
new file mode 100644
index 0000000..9b2da49
--- /dev/null
+++ b/plug-ins/pygimp/plug-ins/palette-to-gradient.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python2
+#
+# 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 3 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.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+from gimpfu import *
+
+gettext.install("gimp20-python", gimp.locale_directory, unicode=True)
+
+def make_gradient(palette, num_segments, num_colors):
+    gradient = pdb.gimp_gradient_new(palette)
+
+    if (num_segments > 1):
+        pdb.gimp_gradient_segment_range_split_uniform(gradient, 0, -1,
+                                                      num_segments)
+
+    for color_number in range(0,num_segments):
+        if (color_number == num_colors-1):color_number_next = 0
+        else: color_number_next = color_number + 1
+        color_left = pdb.gimp_palette_entry_get_color(palette,
+                                                      color_number)
+        color_right = pdb.gimp_palette_entry_get_color(palette,
+                                                       color_number_next)
+        pdb.gimp_gradient_segment_set_left_color(gradient,
+                                                 color_number, color_left,
+                                                 100.0)
+        pdb.gimp_gradient_segment_set_right_color(gradient,
+                                                  color_number, color_right,
+                                                  100.0)
+    pdb.gimp_context_set_gradient(gradient)
+    return gradient
+
+
+def palette_to_gradient_repeating(palette):
+    num_colors = pdb.gimp_palette_get_info(palette)
+    num_segments = num_colors
+    return make_gradient(palette, num_segments, num_colors)
+
+
+register(
+    "python-fu-palette-to-gradient-repeating",
+    N_("Create a repeating gradient using colors from the palette"),
+    "Create a new repeating gradient using colors from the palette.",
+    "Carol Spears, reproduced from previous work by Adrian Likins and Jeff Trefftz",
+    "Carol Spears",
+    "2006",
+    N_("Palette to _Repeating Gradient"),
+    "",
+    [(PF_PALETTE,  "palette", _("Palette"), "")],
+    [(PF_GRADIENT, "new-gradient", "Result")],
+    palette_to_gradient_repeating,
+    menu="<Palettes>",
+    domain=("gimp20-python", gimp.locale_directory)
+    )
+
+
+def palette_to_gradient(palette):
+    num_colors = pdb.gimp_palette_get_info(palette)
+    num_segments = num_colors - 1
+    return make_gradient(palette, num_segments, num_colors)
+
+register(
+    "python-fu-palette-to-gradient",
+    N_("Create a gradient using colors from the palette"),
+    "Create a new gradient using colors from the palette.",
+    "Carol Spears, reproduced from previous work by Adrian Likins and Jeff Trefftz",
+    "Carol Spears",
+    "2006",
+    N_("Palette to _Gradient"),
+    "",
+    [(PF_PALETTE,  "palette", _("Palette"), "")],
+    [(PF_GRADIENT, "new-gradient", "Result")],
+    palette_to_gradient,
+    menu="<Palettes>",
+    domain=("gimp20-python", gimp.locale_directory)
+    )
+
+main ()