gimp/app/pdb/gradients_cmds.c

/* The GIMP -- an 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 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

/* NOTE: This file is autogenerated by pdbgen.pl. */

#include "config.h"

#include <string.h>

#include <glib-object.h>

#include "pdb-types.h"
#include "procedural_db.h"

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

static ProcRecord gradients_refresh_proc;
static ProcRecord gradients_get_list_proc;
static ProcRecord gradients_sample_uniform_proc;
static ProcRecord gradients_sample_custom_proc;
static ProcRecord gradients_get_gradient_data_proc;

void
register_gradients_procs (Gimp *gimp)
{
  procedural_db_register (gimp, &gradients_refresh_proc);
  procedural_db_register (gimp, &gradients_get_list_proc);
  procedural_db_register (gimp, &gradients_sample_uniform_proc);
  procedural_db_register (gimp, &gradients_sample_custom_proc);
  procedural_db_register (gimp, &gradients_get_gradient_data_proc);
}

static Argument *
gradients_refresh_invoker (Gimp         *gimp,
                           GimpContext  *context,
                           GimpProgress *progress,
                           Argument     *args)
{
  gimp_data_factory_data_refresh (gimp->gradient_factory);
  return procedural_db_return_args (&gradients_refresh_proc, TRUE);
}

static ProcRecord gradients_refresh_proc =
{
  "gimp-gradients-refresh",
  "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_INTERNAL,
  0,
  NULL,
  0,
  NULL,
  { { gradients_refresh_invoker } }
};

static Argument *
gradients_get_list_invoker (Gimp         *gimp,
                            GimpContext  *context,
                            GimpProgress *progress,
                            Argument     *args)
{
  gboolean success = TRUE;
  Argument *return_args;
  gchar *filter;
  gint32 num_gradients;
  gchar **gradient_list = NULL;

  filter = (gchar *) args[0].value.pdb_pointer;
  if (filter && !g_utf8_validate (filter, -1, NULL))
    success = FALSE;

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

  return_args = procedural_db_return_args (&gradients_get_list_proc, success);

  if (success)
    {
      return_args[1].value.pdb_int = num_gradients;
      return_args[2].value.pdb_pointer = gradient_list;
    }

  return return_args;
}

static ProcArg gradients_get_list_inargs[] =
{
  {
    GIMP_PDB_STRING,
    "filter",
    "An optional regular expression used to filter the list"
  }
};

static ProcArg gradients_get_list_outargs[] =
{
  {
    GIMP_PDB_INT32,
    "num-gradients",
    "The number of loaded gradients"
  },
  {
    GIMP_PDB_STRINGARRAY,
    "gradient-list",
    "The list of gradient names"
  }
};

static ProcRecord gradients_get_list_proc =
{
  "gimp-gradients-get-list",
  "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_INTERNAL,
  1,
  gradients_get_list_inargs,
  2,
  gradients_get_list_outargs,
  { { gradients_get_list_invoker } }
};

static Argument *
gradients_sample_uniform_invoker (Gimp         *gimp,
                                  GimpContext  *context,
                                  GimpProgress *progress,
                                  Argument     *args)
{
  gboolean success = TRUE;
  Argument *return_args;
  gint32 num_samples;
  gboolean reverse;
  gint32 array_length = 0;
  gdouble *color_samples = NULL;

  num_samples = args[0].value.pdb_int;
  if (num_samples < 2)
    success = FALSE;

  reverse = args[1].value.pdb_int ? TRUE : FALSE;

  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, seg, pos, reverse, &color);

          *pv++ = color.r;
          *pv++ = color.g;
          *pv++ = color.b;
          *pv++ = color.a;

          pos += delta;
        }
    }

  return_args = procedural_db_return_args (&gradients_sample_uniform_proc, success);

  if (success)
    {
      return_args[1].value.pdb_int = array_length;
      return_args[2].value.pdb_pointer = color_samples;
    }

  return return_args;
}

static ProcArg gradients_sample_uniform_inargs[] =
{
  {
    GIMP_PDB_INT32,
    "num-samples",
    "The number of samples to take"
  },
  {
    GIMP_PDB_INT32,
    "reverse",
    "Use the reverse gradient (TRUE or FALSE)"
  }
};

static ProcArg gradients_sample_uniform_outargs[] =
{
  {
    GIMP_PDB_INT32,
    "array-length",
    "Length of the color_samples array (4 * num_samples)"
  },
  {
    GIMP_PDB_FLOATARRAY,
    "color-samples",
    "Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }"
  }
};

static ProcRecord gradients_sample_uniform_proc =
{
  "gimp-gradients-sample-uniform",
  "gimp-gradients-sample-uniform",
  "This procedure is deprecated! Use 'gimp-gradient-get-uniform-samples' instead.",
  "This procedure is deprecated! Use 'gimp-gradient-get-uniform-samples' instead.",
  "",
  "",
  "",
  "gimp-gradient-get-uniform-samples",
  GIMP_INTERNAL,
  2,
  gradients_sample_uniform_inargs,
  2,
  gradients_sample_uniform_outargs,
  { { gradients_sample_uniform_invoker } }
};

static Argument *
gradients_sample_custom_invoker (Gimp         *gimp,
                                 GimpContext  *context,
                                 GimpProgress *progress,
                                 Argument     *args)
{
  gboolean success = TRUE;
  Argument *return_args;
  gint32 num_samples;
  gdouble *positions;
  gboolean reverse;
  gint32 array_length = 0;
  gdouble *color_samples = NULL;

  num_samples = args[0].value.pdb_int;
  if (num_samples <= 0)
    success = FALSE;

  positions = (gdouble *) args[1].value.pdb_pointer;

  reverse = args[2].value.pdb_int ? TRUE : FALSE;

  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, seg, *positions,
                                            reverse, &color);

          *pv++ = color.r;
          *pv++ = color.g;
          *pv++ = color.b;
          *pv++ = color.a;

          positions++;
        }
    }

  return_args = procedural_db_return_args (&gradients_sample_custom_proc, success);

  if (success)
    {
      return_args[1].value.pdb_int = array_length;
      return_args[2].value.pdb_pointer = color_samples;
    }

  return return_args;
}

static ProcArg gradients_sample_custom_inargs[] =
{
  {
    GIMP_PDB_INT32,
    "num-samples",
    "The number of samples to take"
  },
  {
    GIMP_PDB_FLOATARRAY,
    "positions",
    "The list of positions to sample along the gradient"
  },
  {
    GIMP_PDB_INT32,
    "reverse",
    "Use the reverse gradient (TRUE or FALSE)"
  }
};

static ProcArg gradients_sample_custom_outargs[] =
{
  {
    GIMP_PDB_INT32,
    "array-length",
    "Length of the color_samples array (4 * num_samples)"
  },
  {
    GIMP_PDB_FLOATARRAY,
    "color-samples",
    "Color samples: { R1, G1, B1, A1, ..., Rn, Gn, Bn, An }"
  }
};

static ProcRecord gradients_sample_custom_proc =
{
  "gimp-gradients-sample-custom",
  "gimp-gradients-sample-custom",
  "This procedure is deprecated! Use 'gimp-gradient-get-custom-samples' instead.",
  "This procedure is deprecated! Use 'gimp-gradient-get-custom-samples' instead.",
  "",
  "",
  "",
  "gimp-gradient-get-custom-samples",
  GIMP_INTERNAL,
  3,
  gradients_sample_custom_inargs,
  2,
  gradients_sample_custom_outargs,
  { { gradients_sample_custom_invoker } }
};

static Argument *
gradients_get_gradient_data_invoker (Gimp         *gimp,
                                     GimpContext  *context,
                                     GimpProgress *progress,
                                     Argument     *args)
{
  gboolean success = TRUE;
  Argument *return_args;
  gchar *name;
  gint32 sample_size;
  gboolean reverse;
  gchar *actual_name = NULL;
  gint32 width = 0;
  gdouble *grad_data = NULL;

  name = (gchar *) args[0].value.pdb_pointer;
  if (name && !g_utf8_validate (name, -1, NULL))
    success = FALSE;

  sample_size = args[1].value.pdb_int;
  if (sample_size <= 0 || sample_size > 10000)
    sample_size = GIMP_GRADIENT_DEFAULT_SAMPLE_SIZE;

  reverse = args[2].value.pdb_int ? TRUE : FALSE;

  if (success)
    {
      GimpGradient *gradient;

      if (name && strlen (name))
        {
          gradient = (GimpGradient *)
            gimp_container_get_child_by_name (gimp->gradient_factory->container,
                                              name);
        }
      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 (gradient)->name);
          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, seg, pos, reverse, &color);

              *pv++ = color.r;
              *pv++ = color.g;
              *pv++ = color.b;
              *pv++ = color.a;

              pos += delta;
            }
        }
      else
        success = FALSE;
    }

  return_args = procedural_db_return_args (&gradients_get_gradient_data_proc, success);

  if (success)
    {
      return_args[1].value.pdb_pointer = actual_name;
      return_args[2].value.pdb_int = width;
      return_args[3].value.pdb_pointer = grad_data;
    }

  return return_args;
}

static ProcArg gradients_get_gradient_data_inargs[] =
{
  {
    GIMP_PDB_STRING,
    "name",
    "The gradient name (\"\" means current active gradient)"
  },
  {
    GIMP_PDB_INT32,
    "sample-size",
    "Size of the sample to return when the gradient is changed (0 < sample_size <= 10000)"
  },
  {
    GIMP_PDB_INT32,
    "reverse",
    "Use the reverse gradient (TRUE or FALSE)"
  }
};

static ProcArg gradients_get_gradient_data_outargs[] =
{
  {
    GIMP_PDB_STRING,
    "actual-name",
    "The gradient name"
  },
  {
    GIMP_PDB_INT32,
    "width",
    "The gradient sample width (r,g,b,a)"
  },
  {
    GIMP_PDB_FLOATARRAY,
    "grad-data",
    "The gradient sample data"
  }
};

static ProcRecord gradients_get_gradient_data_proc =
{
  "gimp-gradients-get-gradient-data",
  "gimp-gradients-get-gradient-data",
  "This procedure is deprecated! Use 'gimp-gradient-get-uniform-samples' instead.",
  "This procedure is deprecated! Use 'gimp-gradient-get-uniform-samples' instead.",
  "",
  "",
  "",
  "gimp-gradient-get-uniform-samples",
  GIMP_INTERNAL,
  3,
  gradients_get_gradient_data_inargs,
  3,
  gradients_get_gradient_data_outargs,
  { { gradients_get_gradient_data_invoker } }
};