1 files changed, 274 insertions, 0 deletions
diff --git a/pdb/groups/gradients.pdb b/pdb/groups/gradients.pdb
new file mode 100644
index 0000000..ed47a15
--- /dev/null
+++ b/pdb/groups/gradients.pdb
@@ -0,0 +1,274 @@
+# GIMP - The GNU Image Manipulation Program
+# Copyright (C) 1995 Spencer Kimball and Peter Mattis
+
+# 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/>.
+
+# "Perlized" from C source by Manish Singh <yosh@gimp.org>
+
+sub gradients_refresh {
+    $blurb = 'Refresh current gradients. This function always succeeds.';
+
+    $help = <<'HELP';
+This procedure retrieves all gradients currently in the user's gradient path
+and updates the gradient dialogs accordingly.
+HELP
+
+    &mitch_pdb_misc('2002');
+
+    %invoke = (
+        code => <<'CODE'
+{
+  gimp_data_factory_data_refresh (gimp->gradient_factory, context);
+}
+CODE
+    );
+}
+
+sub gradients_get_list {
+    $blurb = 'Retrieve the list of loaded gradients.';
+
+    $help = <<'HELP';
+This procedure returns a list of the gradients that are currently loaded.
+You can later use the gimp_context_set_gradient() function to
+set the active gradient.
+HELP
+
+    &federico_pdb_misc('1997');
+
+    @inargs = (
+	{ name => 'filter', type => 'string', null_ok => 1,
+          desc => 'An optional regular expression used to filter the list' }
+    );
+
+    @outargs = (
+	{ name => 'gradient_list', type => 'stringarray',
+	  desc => 'The list of gradient names',
+	  array => { name => 'num_gradients',
+		     desc => 'The number of loaded gradients' } }
+    );
+
+    %invoke = (
+        headers => [ qw("core/gimpcontainer-filter.h") ],
+	code => <<'CODE'
+{
+  gradient_list = gimp_container_get_filtered_name_array (gimp_data_factory_get_container (gimp->gradient_factory),
+                                                          filter, &num_gradients);
+}
+CODE
+    );
+}
+
+sub gradients_sample_uniform {
+    &std_pdb_deprecated ('gimp-gradient-get-uniform-samples');
+
+    @inargs = (
+	{ name => 'num_samples', type => '2 <= int32',
+	  desc => 'The number of samples to take' },
+	{ name => 'reverse', type => 'boolean',
+	  desc => 'Use the reverse gradient' }
+    );
+
+    @outargs = (
+        { name => 'color_samples', type => 'floatarray',
+	  desc => 'Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }',
+	  array => { name => 'array_length', no_lib => 1,
+		     desc => 'Length of the color_samples array (4 *
+			      num_samples)' } }
+    );
+
+    %invoke = (
+	code => <<'CODE'
+{
+  GimpGradient        *gradient;
+  GimpGradientSegment *seg = NULL;
+  gdouble              pos, delta;
+  GimpRGB              color;
+  gdouble             *pv;
+
+  pos   = 0.0;
+  delta = 1.0 / (num_samples - 1);
+
+  array_length = num_samples * 4;
+
+  pv = color_samples = g_new (gdouble, array_length);
+
+  gradient = gimp_context_get_gradient (context);
+
+  while (num_samples--)
+    {
+      seg = gimp_gradient_get_color_at (gradient, context, seg,
+                                        pos, reverse,
+                                        GIMP_GRADIENT_BLEND_RGB_PERCEPTUAL,
+                                        &color);
+
+      *pv++ = color.r;
+      *pv++ = color.g;
+      *pv++ = color.b;
+      *pv++ = color.a;
+
+      pos += delta;
+    }
+}
+CODE
+    );
+}
+
+sub gradients_sample_custom {
+    &std_pdb_deprecated ('gimp-gradient-get-custom-samples');
+
+    @inargs = (
+	{ name  => 'positions', type  => 'floatarray',
+	  desc  => 'The list of positions to sample along the gradient',
+	  array => { name => 'num_samples',
+		     desc => 'The number of samples to take' } },
+	{ name => 'reverse', type => 'boolean',
+	  desc => 'Use the reverse gradient' }
+    );
+
+    @outargs = (
+        { name => 'color_samples', type => 'floatarray',
+	  desc => 'Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }',
+	  array => { name => 'array_length', no_lib => 1,
+		     desc => 'Length of the color_samples array (4 *
+			      num_samples)' } }
+    );
+
+    %invoke = (
+	code => <<'CODE'
+{
+  GimpGradient        *gradient;
+  GimpGradientSegment *seg = NULL;
+  GimpRGB              color;
+  gdouble             *pv;
+
+  array_length = num_samples * 4;
+
+  pv = color_samples = g_new (gdouble, array_length);
+
+  gradient = gimp_context_get_gradient (context);
+
+  while (num_samples--)
+    {
+      seg = gimp_gradient_get_color_at (gradient, context, seg,
+                                        *positions, reverse,
+                                        GIMP_GRADIENT_BLEND_RGB_PERCEPTUAL,
+                                        &color);
+
+      *pv++ = color.r;
+      *pv++ = color.g;
+      *pv++ = color.b;
+      *pv++ = color.a;
+
+      positions++;
+    }
+}
+CODE
+    );
+}
+
+sub gradients_get_gradient_data {
+    &std_pdb_deprecated ('gimp-gradient-get-uniform-samples');
+
+    @inargs = (
+	{ name => 'name', type => 'string', null_ok => 1,
+	  desc => 'The gradient name ("" means current active gradient)' },
+	{ name => 'sample_size', type => '1 <= int32 <= 10000',
+	  no_validate => 1,
+	  desc => 'Size of the sample to return when the gradient is changed' },
+	{ name => 'reverse', type => 'boolean',
+	  desc => 'Use the reverse gradient' }
+    );
+
+    @outargs = (
+	{ name => 'actual_name', type => 'string',
+	  desc => 'The gradient name' },
+	{ name => 'grad_data', type => 'floatarray',
+	  desc => 'The gradient sample data',
+	  array => { name => 'width',
+		     desc => 'The gradient sample width (r,g,b,a)' } }
+    );
+
+    %invoke = (
+	code => <<"CODE"
+{
+  GimpGradient *gradient;
+
+  if (sample_size < 1 || sample_size > 10000)
+    sample_size = GIMP_GRADIENT_DEFAULT_SAMPLE_SIZE;
+
+  if (name && strlen (name))
+    gradient = gimp_pdb_get_gradient (gimp, name, FALSE, error);
+  else
+    gradient = gimp_context_get_gradient (context);
+
+  if (gradient)
+    {
+      GimpGradientSegment *seg = NULL;
+      gdouble             *pv;
+      gdouble              pos, delta;
+      GimpRGB              color;
+
+      pos   = 0.0;
+      delta = 1.0 / (sample_size - 1);
+
+      actual_name = g_strdup (gimp_object_get_name (gradient));
+      grad_data   = g_new (gdouble, sample_size * 4);
+      width       = sample_size * 4;
+
+      pv = grad_data;
+
+      while (sample_size--)
+	{
+	  seg = gimp_gradient_get_color_at (gradient, context, seg,
+                                            pos, reverse,
+                                            GIMP_GRADIENT_BLEND_RGB_PERCEPTUAL,
+                                            &color);
+
+	  *pv++ = color.r;
+	  *pv++ = color.g;
+	  *pv++ = color.b;
+	  *pv++ = color.a;
+
+	  pos += delta;
+	}
+    }
+  else
+    success = FALSE;
+}
+CODE
+    );
+}
+
+
+@headers = qw(<string.h>
+              "core/gimp.h"
+              "core/gimpcontext.h"
+              "core/gimpdatafactory.h"
+              "core/gimpgradient.h"
+              "gimppdb-utils.h");
+
+@procs = qw(gradients_refresh
+            gradients_get_list
+	    gradients_sample_uniform
+            gradients_sample_custom
+            gradients_get_gradient_data);
+
+%exports = (app => [@procs], lib => [@procs]);
+
+$desc = 'Gradients';
+$doc_title = 'gimpgradients';
+$doc_short_desc = 'Operations related to gradients.';
+$doc_long_desc = 'Operations related to gradients.';
+
+1;