Quelle  image-autocrop-cmds.c   Sprache: C

/* 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 <https://www.gnu.org/licenses/>.
 */

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

#include "config.h"

#include "stamp-pdbgen.h"

#include <gegl.h>

#include <gdk-pixbuf/gdk-pixbuf.h>

#include "libgimpbase/gimpbase.h"

#include "pdb-types.h"

#include "core/gimpdrawable.h"
#include "core/gimpimage-crop.h"
#include "core/gimpimage-resize.h"
#include "core/gimpimage-undo.h"
#include "core/gimpimage.h"
#include "core/gimpparamspecs.h"
#include "core/gimppickable-auto-shrink.h"
#include "core/gimppickable.h"

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

#include "gimp-intl.h"


static GimpValueArray *
image_autocrop_invoker (GimpProcedure         *procedure,
                        Gimp                  *gimp,
                        GimpContext           *context,
                        GimpProgress          *progress,
                        const GimpValueArray  *args,
                        GError               **error)
{
  gboolean success = TRUE;
  GimpImage *image;
  GimpDrawable *drawable;

  image = g_value_get_object (gimp_value_array_index (args, 0));
  drawable = g_value_get_object (gimp_value_array_index (args, 1));

  if (success)
    {
      gint x, y, width, height;

      if (drawable != NULL)
        {
          if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                         GIMP_PDB_ITEM_CONTENT, error))
            {
              gint off_x, off_y;

              gimp_pickable_auto_shrink (GIMP_PICKABLE (drawable),
                                         0, 0,
                                         gimp_item_get_width  (GIMP_ITEM (drawable)),
                                         gimp_item_get_height (GIMP_ITEM (drawable)),
                                         &x, &y, &width, &height);

              gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
              x += off_x;
              y += off_y;
            }
          else
            {
              success = FALSE;
            }
        }
      else
        {
          gimp_pickable_auto_shrink (GIMP_PICKABLE (image),
                                     0, 0,
                                     gimp_image_get_width  (image),
                                     gimp_image_get_height (image),
                                     &x, &y, &width, &height);
        }

      if (success)
        {
          gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_RESIZE,
                                       _("Autocrop image"));

          if (x          < 0                             ||
              y          < 0                             ||
              x + width  > gimp_image_get_width  (image) ||
              y + height > gimp_image_get_height (image))
            {
              /*
               * partially outside the image area, we need to
               * resize the image to be able to crop properly.
               */
              gimp_image_resize (image, context, width, height, -x, -y, NULL);

              x = y = 0;
            }

          gimp_image_crop (image, context, GIMP_FILL_TRANSPARENT,
                           x, y, width, height, TRUE);

          gimp_image_undo_group_end (image);
        }
    }

  return gimp_procedure_get_return_values (procedure, success,
                                           error ? *error : NULL);
}

static GimpValueArray *
image_autocrop_selected_layers_invoker (GimpProcedure         *procedure,
                                        Gimp                  *gimp,
                                        GimpContext           *context,
                                        GimpProgress          *progress,
                                        const GimpValueArray  *args,
                                        GError               **error)
{
  gboolean success = TRUE;
  GimpImage *image;
  GimpDrawable *drawable;

  image = g_value_get_object (gimp_value_array_index (args, 0));
  drawable = g_value_get_object (gimp_value_array_index (args, 1));

  if (success)
    {
      GimpAutoShrink shrink;
      gint           x, y, width, height;

      if (drawable != NULL)
        {
          if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                         GIMP_PDB_ITEM_CONTENT, error))
            {
              gint off_x, off_y;

              shrink = gimp_pickable_auto_shrink (GIMP_PICKABLE (drawable),
                                                  0, 0,
                                                  gimp_item_get_width  (GIMP_ITEM (drawable)),
                                                  gimp_item_get_height (GIMP_ITEM (drawable)),
                                                  &x, &y, &width, &height);

              gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
              x += off_x;
              y += off_y;
            }
          else
            {
              success = FALSE;
            }
        }
      else
        {
          shrink = gimp_pickable_auto_shrink (GIMP_PICKABLE (image),
                                              0, 0,
                                              gimp_image_get_width  (image),
                                              gimp_image_get_height (image),
                                              &x, &y, &width, &height);
        }

      if (success && shrink != GIMP_AUTO_SHRINK_SHRINK)
        success = FALSE;

      if (success)
        {
          GList *layers = gimp_image_get_selected_layers (image);

          if (layers)
            {
              GList *iter;

              gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_RESIZE,
                                           _("Autocrop layer"));

              for (iter = layers; iter; iter = iter->next)
                {
                  gint layer_off_x, layer_off_y;

                  gimp_item_get_offset (GIMP_ITEM (iter->data), &layer_off_x, &layer_off_y);
                  gimp_item_resize (GIMP_ITEM (iter->data),
                                    context, GIMP_FILL_TRANSPARENT,
                                    width, height, layer_off_x - x, layer_off_y - y);
                 }

              gimp_image_undo_group_end (image);
            }
          else
            {
              success = FALSE;
            }
        }
    }

  return gimp_procedure_get_return_values (procedure, success,
                                           error ? *error : NULL);
}

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

  /*
   * gimp-image-autocrop
   */
  procedure = gimp_procedure_new (image_autocrop_invoker, FALSE);
  gimp_object_set_static_name (GIMP_OBJECT (procedure),
                               "gimp-image-autocrop");
  gimp_procedure_set_static_help (procedure,
                                  "Remove empty borders from the image",
                                  "Remove empty borders from the @image based on empty borders of the input @drawable.\n"
                                  "\n"
                                  "The input drawable serves as a base for detecting cropping extents (transparency or background color).\n"
                                  "With a %NULL input drawable, the image itself will serve as a base for detecting cropping extents.",
                                  NULL);
  gimp_procedure_set_static_attribution (procedure,
                                         "Spencer Kimball & Peter Mattis",
                                         "Spencer Kimball & Peter Mattis",
                                         "1997");
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_image ("image",
                                                      "image",
                                                      "Input image)",
                                                      FALSE,
                                                      GIMP_PARAM_READWRITE));
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_drawable ("drawable",
                                                         "drawable",
                                                         "Input drawable",
                                                         TRUE,
                                                         GIMP_PARAM_READWRITE));
  gimp_pdb_register_procedure (pdb, procedure);
  g_object_unref (procedure);

  /*
   * gimp-image-autocrop-selected-layers
   */
  procedure = gimp_procedure_new (image_autocrop_selected_layers_invoker, FALSE);
  gimp_object_set_static_name (GIMP_OBJECT (procedure),
                               "gimp-image-autocrop-selected-layers");
  gimp_procedure_set_static_help (procedure,
                                  "Crop the selected layers based on empty borders of the input drawable",
                                  "Crop the selected layers of the input @image based on empty borders of the input @drawable.\n"
                                  "The input drawable serves as a base for detecting cropping extents (transparency or background color), and is not necessarily among the cropped layers (the current selected layers).\n"
                                  "With a %NULL input drawable, the image itself will serve as a base for detecting cropping extents.",
                                  NULL);
  gimp_procedure_set_static_attribution (procedure,
                                         "Spencer Kimball & Peter Mattis",
                                         "Spencer Kimball & Peter Mattis",
                                         "1997");
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_image ("image",
                                                      "image",
                                                      "Input image",
                                                      FALSE,
                                                      GIMP_PARAM_READWRITE));
  gimp_procedure_add_argument (procedure,
                               gimp_param_spec_drawable ("drawable",
                                                         "drawable",
                                                         "Input drawable",
                                                         TRUE,
                                                         GIMP_PARAM_READWRITE));
  gimp_pdb_register_procedure (pdb, procedure);
  g_object_unref (procedure);
}