PIKApp/pdb/groups/pattern.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>

# The invoke code is compiled on the app side.
# The invoke code must assign to each result var


$pattern_arg_spec = { name => 'pattern', type => 'pattern', non_empty => 1,
  desc => 'The pattern' };


sub pattern_get_by_name {
    $blurb = "Returns the pattern with the given name.";
    $help  = "Returns the pattern with the given name.";

    &mitch_pdb_misc('2023', '3.0');

    @inargs = (
      { name => 'name', type => 'string', non_empty => 1,
        desc => 'The name of the pattern' }
    );

    @outargs = (
      { name => 'pattern', type => 'pattern', non_empty => 1,
        desc => 'The pattern' }
    );

    %invoke = (
        code => <<'CODE'
{
  pattern = PIKA_PATTERN (pika_pdb_get_resource (pika, PIKA_TYPE_PATTERN, name, PIKA_PDB_DATA_ACCESS_READ, error));

  if (! pattern)
    success = FALSE;
}
CODE
    );
}

sub pattern_get_info {
    $blurb = 'Gets information about the pattern.';

    $help = <<'HELP';
Gets information about the pattern:
the pattern extents (width and height) and bytes per pixel.
HELP

    &mitch_pdb_misc('2004', '2.2');

    @inargs = (
      ${pattern_arg_spec}
    );

    @outargs = (
      { name => 'width', type => 'int32', void_ret => 1,
        desc => "The pattern width" },
      { name => 'height', type => 'int32',
        desc => "The pattern height" },
      { name => 'bpp', type => 'int32',
        desc => "The pattern bpp" }
    );

    %invoke = (
	code => <<'CODE'
{
  const Babl *format;

  format = pika_babl_compat_u8_format (
    pika_temp_buf_get_format (pattern->mask));

  width  = pika_temp_buf_get_width  (pattern->mask);
  height = pika_temp_buf_get_height (pattern->mask);
  bpp    = babl_format_get_bytes_per_pixel (format);
}
CODE
    );
}

sub pattern_get_pixels {
    $blurb = <<'BLURB';
Gets information about the pattern (including pixels).
BLURB

    $help = <<'HELP';
Gets information about the pattern:
the pattern extents (width and height), its bpp, and its pixel data.
The pixel data is an array in C or a list in some languages.
HELP

    &mitch_pdb_misc('2004', '2.2');

    @inargs = (
      ${pattern_arg_spec}
    );

    @outargs = (
      { name => 'width', type => 'int32', void_ret => 1,
        desc => "The pattern width" },
      { name => 'height', type => 'int32',
        desc => "The pattern height" },
      { name => 'bpp', type => 'int32',
        desc => "The pattern bpp" },
      { name => 'color_bytes', type => 'bytes',
        desc => 'The pattern data.' }
    );

    %invoke = (
	code => <<'CODE'
{

  const Babl *format;
  gpointer    data;

  format = pika_babl_compat_u8_format (
    pika_temp_buf_get_format (pattern->mask));
  data   = pika_temp_buf_lock (pattern->mask, format, GEGL_ACCESS_READ);

  width           = pika_temp_buf_get_width  (pattern->mask);
  height          = pika_temp_buf_get_height (pattern->mask);
  bpp             = babl_format_get_bytes_per_pixel (format);
  color_bytes     = g_bytes_new (data, pika_temp_buf_get_data_size (pattern->mask));

  pika_temp_buf_unlock (pattern->mask, data);
}
CODE
    );
}


@headers = qw(<string.h>
              "gegl/pika-babl-compat.h"
              "core/pikacontext.h"
              "core/pikadatafactory.h"
              "core/pikapattern.h"
              "core/pikatempbuf.h"
              "pikapdb-utils.h");

@procs = qw(pattern_get_by_name
            pattern_get_info
            pattern_get_pixels);

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

$desc = 'Pattern';
$doc_title = 'pikapattern';
$doc_short_desc = 'Installable object used by fill and clone tools.';
$doc_long_desc =  'Installable object used by fill and clone tools.';

1;