PIKApp/pdb/groups/buffer.pdb

# PIKA - Photo and Image Kooker Application
# 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 buffers_get_list {
    $blurb = 'Retrieve a complete listing of the available buffers.';

    $help = <<'HELP';
This procedure returns a complete listing of available named buffers.
HELP

    &mitch_pdb_misc('2005', '2.4');

    @inargs = (
	{ name => 'filter', type => 'string', null_ok => 1,
          desc => 'An optional regular expression used to filter the list' }
    );

    @outargs = (
	{ name => 'buffer_list', type => 'strv',
	  desc => 'The list of buffer names' }
    );

    %invoke = (
	code => <<'CODE'
{
  buffer_list = pika_container_get_filtered_name_array (pika->named_buffers,
                                                        filter);
}
CODE
    );
}

sub buffer_rename {
    $blurb = 'Renames a named buffer.';
    $help  = 'This procedure renames a named buffer.';

    &mitch_pdb_misc('2005', '2.4');

    @inargs = (
        { name => 'buffer_name', type => 'string', non_empty => 1,
          desc => 'The buffer name' },
        { name => 'new_name', type => 'string', non_empty => 1,
          desc => 'The buffer\'s new name' }
    );

    @outargs = (
	{ name => 'real_name', type => 'string',
	  desc => 'The real name given to the buffer' }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaBuffer *buffer = pika_pdb_get_buffer (pika, buffer_name, error);

  if (buffer)
    {
      pika_object_set_name (PIKA_OBJECT (buffer), new_name);
      real_name = g_strdup (pika_object_get_name (buffer));
    }
  else
    success = FALSE;
}
CODE
    );
}

sub buffer_delete {
    $blurb = 'Deletes a named buffer.';
    $help  = 'This procedure deletes a named buffer.';

    $author = $copyright = 'David Gowers <neota@softhome.net>';
    $date   = '2005';
    $since  = '2.4';

    @inargs = (
        { name => 'buffer_name', type => 'string', non_empty => 1,
          desc => 'The buffer name' }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaBuffer *buffer = pika_pdb_get_buffer (pika, buffer_name, error);

  if (buffer)
    success = pika_container_remove (pika->named_buffers, PIKA_OBJECT (buffer));
  else
    success = FALSE;
}
CODE
    );
}

sub buffer_get_width {
    $blurb = "Retrieves the specified buffer's width.";
    $help  = "This procedure retrieves the specified named buffer's width.";

    &mitch_pdb_misc('2005', '2.4');

    @inargs = (
        { name => 'buffer_name', type => 'string', non_empty => 1,
          desc => 'The buffer name' }
    );

    @outargs = (
	{ name => 'width', type => 'int32',
          desc => "The buffer width" }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaBuffer *buffer = pika_pdb_get_buffer (pika, buffer_name, error);

  if (buffer)
    width = pika_buffer_get_width (buffer);
  else
    success = FALSE;
}
CODE
    );
}

sub buffer_get_height {
    $blurb = "Retrieves the specified buffer's height.";
    $help  = "This procedure retrieves the specified named buffer's height.";

    &mitch_pdb_misc('2005', '2.4');

    @inargs = (
        { name => 'buffer_name', type => 'string', non_empty => 1,
          desc => 'The buffer name' }
    );

    @outargs = (
	{ name => 'height', type => 'int32',
          desc => "The buffer height" }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaBuffer *buffer = pika_pdb_get_buffer (pika, buffer_name, error);

  if (buffer)
    height = pika_buffer_get_height (buffer);
  else
    success = FALSE;
}
CODE
    );
}

sub buffer_get_bytes {
    $blurb = "Retrieves the specified buffer's bytes.";
    $help  = "This procedure retrieves the specified named buffer's bytes.";

    &mitch_pdb_misc('2005', '2.4');

    @inargs = (
        { name => 'buffer_name', type => 'string', non_empty => 1,
          desc => 'The buffer name' }
    );

    @outargs = (
	{ name => 'bytes', type => 'int32',
          desc => "The buffer bpp" }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaBuffer *buffer = pika_pdb_get_buffer (pika, buffer_name, error);

  if (buffer)
    {
      const Babl *format = pika_buffer_get_format (buffer);

      bytes = babl_format_get_bytes_per_pixel (format);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub buffer_get_image_type {
    $blurb = "Retrieves the specified buffer's image type.";
    $help  = "This procedure retrieves the specified named buffer's image type.";

    &mitch_pdb_misc('2005', '2.4');

    @inargs = (
        { name => 'buffer_name', type => 'string', non_empty => 1,
          desc => 'The buffer name' }
    );

    @outargs = (
	{ name => 'image_type', type => 'enum PikaImageBaseType',
          desc => "The buffer image type" }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaBuffer *buffer = pika_pdb_get_buffer (pika, buffer_name, error);

  if (buffer)
    image_type = pika_babl_format_get_image_type (pika_buffer_get_format (buffer));
  else
    success = FALSE;
}
CODE
    );
}


@headers = qw(<string.h>
              "gegl/pika-babl-compat.h"
              "core/pika.h"
              "core/pikabuffer.h"
              "core/pikacontainer.h"
              "core/pikacontainer-filter.h"
	      "pikapdb-utils.h");

@procs = qw(buffers_get_list
            buffer_rename
            buffer_delete
	    buffer_get_width
            buffer_get_height
            buffer_get_bytes
            buffer_get_image_type);

%exports = (app => [@procs], lib => [@procs]);

$desc = 'Buffer procedures';
$doc_title = 'pikabuffer';
$doc_short_desc = 'Functions for manipulating cut buffers.';
$doc_long_desc = 'Functions related to named cut buffers.';

1;