/* GIMP - The GNU Image Manipulation Program
 * Copyright (C) 1995-2003 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 <http://www.gnu.org/licenses/>.
 */

/* NOTE: This file is auto-generated by pdbgen.pl. */

#include "config.h"

#include <string.h>

#include <gegl.h>

#include <gdk-pixbuf/gdk-pixbuf.h>

#include "libgimpbase/gimpbase.h"

#include "pdb-types.h"

#include "core/gimp.h"
#include "core/gimpcontainer-filter.h"
#include "core/gimpcontext.h"
#include "core/gimpdatafactory.h"
#include "core/gimpgradient.h"
#include "core/gimpparamspecs.h"

#include "gimppdb.h"
#include "gimppdb-utils.h"
#include "gimpprocedure.h"
#include "internal-procs.h"


static GimpValueArray *
gradients_refresh_invoker (GimpProcedure         *procedure,
                           Gimp                  *gimp,
                           GimpContext           *context,
                           GimpProgress          *progress,
                           const GimpValueArray  *args,
                           GError               **error)
{
  gimp_data_factory_data_refresh (gimp->gradient_factory, context);

  return gimp_procedure_get_return_values (procedure, TRUE, NULL);
}

static GimpValueArray *
gradients_get_list_invoker (GimpProcedure         *procedure,
                            Gimp                  *gimp,
                            GimpContext           *context,
                            GimpProgress          *progress,
                            const GimpValueArray  *args,
                            GError               **error)
{
  gboolean success = TRUE;
  GimpValueArray *return_vals;
  const gchar *filter;
  gint32 num_gradients = 0;
  gchar **gradient_list = NULL;

  filter = g_value_get_string (gimp_value_array_index (args, 0));

  if (success)
    {
      gradient_list = gimp_container_get_filtered_name_array (gimp_data_factory_get_container (gimp->gradient_factory),
                                                              filter, &num_gradients);
    }

  return_vals = gimp_procedure_get_return_values (procedure, success,
                                                  error ? *error : NULL);

  if (success)
    {
      g_value_set_int (gimp_value_array_index (return_vals, 1), num_gradients);
      gimp_value_take_stringarray (gimp_value_array_index (return_vals, 2), gradient_list, num_gradients);
    }

  return return_vals;
}

static GimpValueArray *
gradients_sample_uniform_invoker (GimpProcedure         *procedure,
                                  Gimp                  *gimp,
                                  GimpContext           *context,
                                  GimpProgress          *progress,
                                  const GimpValueArray  *args,
                                  GError               **error)
{
  gboolean success = TRUE;
  GimpValueArray *return_vals;
  gint32 num_samples;
  gboolean reverse;
  gint32 array_length = 0;
  gdouble *color_samples = NULL;

  num_samples = g_value_get_int (gimp_value_array_index (args, 0));
  reverse = g_value_get_boolean (gimp_value_array_index (args, 1));

  if (success)
    {
      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;
        }
    }

  return_vals = gimp_procedure_get_return_values (procedure, success,
                                                  error ? *error : NULL);

  if (success)
    {
      g_value_set_int (gimp_value_array_index (return_vals, 1), array_length);
      gimp_value_take_floatarray (gimp_value_array_index (return_vals, 2), color_samples, array_length);
    }

  return return_vals;
}

static GimpValueArray *
gradients_sample_custom_invoker (GimpProcedure         *procedure,
                                 Gimp                  *gimp,
                                 GimpContext           *context,
                                 GimpProgress          *progress,
                                 const GimpValueArray  *args,
                                 GError               **error)
{
  gboolean success = TRUE;
  GimpValueArray *return_vals;
  gint32 num_samples;
  const gdouble *positions;
  gboolean reverse;
  gint32 array_length = 0;
  gdouble *color_samples = NULL;

  num_samples = g_value_get_int (gimp_value_array_index (args, 0));
  positions = gimp_value_get_floatarray (gimp_value_array_index (args, 1));
  reverse = g_value_get_boolean (gimp_value_array_index (args, 2));

  if (success)
    {
      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++;
        }
    }

  return_vals = gimp_procedure_get_return_values (procedure, success,
                                                  error ? *error : NULL);

  if (success)
    {
      g_value_set_int (gimp_value_array_index (return_vals, 1), array_length);
      gimp_value_take_floatarray (gimp_value_array_index (return_vals, 2), color_samples, array_length);
    }

  return return_vals;
}

static GimpValueArray *
gradients_get_gradient_data_invoker (GimpProcedure         *procedure,
                                     Gimp                  *gimp,
                                     GimpContext           *context,
                                     GimpProgress          *progress,
                                     const GimpValueArray  *args,
                                     GError               **error)
{
  gboolean success = TRUE;
  GimpValueArray *return_vals;
  const gchar *name;
  gint32 sample_size;
  gboolean reverse;
  gchar *actual_name = NULL;
  gint32 width = 0;
  gdouble *grad_data = NULL;

  name = g_value_get_string (gimp_value_array_index (args, 0));
  sample_size = g_value_get_int (gimp_value_array_index (args, 1));
  reverse = g_value_get_boolean (gimp_value_array_index (args, 2));

  if (success)
    {
      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;
    }

  return_vals = gimp_procedure_get_return_values (procedure, success,
                                                  error ? *error : NULL);

  if (success)
    {
      g_value_take_string (gimp_value_array_index (return_vals, 1), actual_name);
      g_value_set_int (gimp_value_array_index (return_vals, 2), width);
      gimp_value_take_floatarray (gimp_value_array_index (return_vals, 3), grad_data, width);
    }

  return return_vals;
}

void
register_gradients_procs (GimpPDB *pdb)
{
  GimpProcedure *procedure;

  /*
   * gimp-gradients-refresh
   */
  procedure = gimp_procedure_new (gradients_refresh_invoker);
  gimp_object_set_static_name (GIMP_OBJECT (procedure),
                               "gimp-gradients-refresh");
  gimp_procedure_set_static_strings (procedure,
                                     "gimp-gradients-refresh",
                                     "Refresh current gradients. This function always succeeds.",
                                     "This procedure retrieves all gradients currently in the user's gradient path and updates the gradient dialogs accordingly.",
                                     "Michael Natterer <mitch@gimp.org>",
                                     "Michael Natterer",
                                     "2002",
                                     NULL);
  gimp_pdb_register_procedure (pdb, procedure);
  g_object_unref (procedure);

  /*
   * gimp-gradients-get-list
   */
  procedure = gimp_procedure_new (gradients_get_list_invoker);
  gimp_object_set_static_name (GIMP_OBJECT (procedure),
                               "gimp-gradients-get-list");
  gimp_procedure_set_static_strings (procedure,
                                     "gimp-gradients-get-list",
                                     "Retrieve the list of loaded gradients.",
                                     "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.",
                                     "Federico Mena Quintero",
                                     "Federico Mena Quintero",
                                     "1997",
                                     NULL);
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_string ("filter",
                                                       "filter",
                                                       "An optional regular expression used to filter the list",
                                                       FALSE, TRUE, FALSE,
                                                       NULL,
                                                       GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_int32 ("num-gradients",
                                                          "num gradients",
                                                          "The number of loaded gradients",
                                                          0, G_MAXINT32, 0,
                                                          GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_string_array ("gradient-list",
                                                                 "gradient list",
                                                                 "The list of gradient names",
                                                                 GIMP_PARAM_READWRITE));
  gimp_pdb_register_procedure (pdb, procedure);
  g_object_unref (procedure);

  /*
   * gimp-gradients-sample-uniform
   */
  procedure = gimp_procedure_new (gradients_sample_uniform_invoker);
  gimp_object_set_static_name (GIMP_OBJECT (procedure),
                               "gimp-gradients-sample-uniform");
  gimp_procedure_set_static_strings (procedure,
                                     "gimp-gradients-sample-uniform",
                                     "Deprecated: Use 'gimp-gradient-get-uniform-samples' instead.",
                                     "Deprecated: Use 'gimp-gradient-get-uniform-samples' instead.",
                                     "",
                                     "",
                                     "",
                                     "gimp-gradient-get-uniform-samples");
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_int32 ("num-samples",
                                                      "num samples",
                                                      "The number of samples to take",
                                                      2, G_MAXINT32, 2,
                                                      GIMP_PARAM_READWRITE));
  gimp_procedure_add_argument (procedure,
                               g_param_spec_boolean ("reverse",
                                                     "reverse",
                                                     "Use the reverse gradient",
                                                     FALSE,
                                                     GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_int32 ("array-length",
                                                          "array length",
                                                          "Length of the color_samples array (4 * num_samples)",
                                                          0, G_MAXINT32, 0,
                                                          GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_float_array ("color-samples",
                                                                "color samples",
                                                                "Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }",
                                                                GIMP_PARAM_READWRITE));
  gimp_pdb_register_procedure (pdb, procedure);
  g_object_unref (procedure);

  /*
   * gimp-gradients-sample-custom
   */
  procedure = gimp_procedure_new (gradients_sample_custom_invoker);
  gimp_object_set_static_name (GIMP_OBJECT (procedure),
                               "gimp-gradients-sample-custom");
  gimp_procedure_set_static_strings (procedure,
                                     "gimp-gradients-sample-custom",
                                     "Deprecated: Use 'gimp-gradient-get-custom-samples' instead.",
                                     "Deprecated: Use 'gimp-gradient-get-custom-samples' instead.",
                                     "",
                                     "",
                                     "",
                                     "gimp-gradient-get-custom-samples");
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_int32 ("num-samples",
                                                      "num samples",
                                                      "The number of samples to take",
                                                      0, G_MAXINT32, 0,
                                                      GIMP_PARAM_READWRITE));
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_float_array ("positions",
                                                            "positions",
                                                            "The list of positions to sample along the gradient",
                                                            GIMP_PARAM_READWRITE));
  gimp_procedure_add_argument (procedure,
                               g_param_spec_boolean ("reverse",
                                                     "reverse",
                                                     "Use the reverse gradient",
                                                     FALSE,
                                                     GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_int32 ("array-length",
                                                          "array length",
                                                          "Length of the color_samples array (4 * num_samples)",
                                                          0, G_MAXINT32, 0,
                                                          GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_float_array ("color-samples",
                                                                "color samples",
                                                                "Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }",
                                                                GIMP_PARAM_READWRITE));
  gimp_pdb_register_procedure (pdb, procedure);
  g_object_unref (procedure);

  /*
   * gimp-gradients-get-gradient-data
   */
  procedure = gimp_procedure_new (gradients_get_gradient_data_invoker);
  gimp_object_set_static_name (GIMP_OBJECT (procedure),
                               "gimp-gradients-get-gradient-data");
  gimp_procedure_set_static_strings (procedure,
                                     "gimp-gradients-get-gradient-data",
                                     "Deprecated: Use 'gimp-gradient-get-uniform-samples' instead.",
                                     "Deprecated: Use 'gimp-gradient-get-uniform-samples' instead.",
                                     "",
                                     "",
                                     "",
                                     "gimp-gradient-get-uniform-samples");
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_string ("name",
                                                       "name",
                                                       "The gradient name (\"\" means current active gradient)",
                                                       FALSE, TRUE, FALSE,
                                                       NULL,
                                                       GIMP_PARAM_READWRITE));
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_int32 ("sample-size",
                                                      "sample size",
                                                      "Size of the sample to return when the gradient is changed",
                                                      1, 10000, 1,
                                                      GIMP_PARAM_READWRITE | GIMP_PARAM_NO_VALIDATE));
  gimp_procedure_add_argument (procedure,
                               g_param_spec_boolean ("reverse",
                                                     "reverse",
                                                     "Use the reverse gradient",
                                                     FALSE,
                                                     GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_string ("actual-name",
                                                           "actual name",
                                                           "The gradient name",
                                                           FALSE, FALSE, FALSE,
                                                           NULL,
                                                           GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_int32 ("width",
                                                          "width",
                                                          "The gradient sample width (r,g,b,a)",
                                                          0, G_MAXINT32, 0,
                                                          GIMP_PARAM_READWRITE));
  gimp_procedure_add_return_value (procedure,
                                   gimp_param_spec_float_array ("grad-data",
                                                                "grad data",
                                                                "The gradient sample data",
                                                                GIMP_PARAM_READWRITE));
  gimp_pdb_register_procedure (pdb, procedure);
  g_object_unref (procedure);
}
