gimp/pdb/groups/drawable_edit.pdb

# GIMP - The GNU Image Manipulation Program
# 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 drawable_edit_clear {
    $blurb = 'Clear selected area of drawable.';

    $help = <<'HELP';
This procedure clears the specified drawable. If the drawable has an
alpha channel, the cleared pixels will become transparent. If the
drawable does not have an alpha channel, cleared pixels will be set to
the background color. This procedure only affects regions within a
selection if there is a selection active.


This procedure is affected by the following context setters:
gimp_context_set_background().
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The drawable to clear from' }
    );

    %invoke = (
	code => <<CODE
{
  if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                 GIMP_PDB_ITEM_CONTENT, error) &&
      gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
    {
      gimp_drawable_edit_clear (drawable, context);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub drawable_edit_fill {
    $blurb = 'Fill selected area of drawable.';

    $help = <<'HELP';

This procedure fills the specified drawable according to fill
mode. This procedure only affects regions within a selection if there
is a selection active. If you want to fill the whole drawable,
regardless of the selection, use gimp_drawable_fill().


This procedure is affected by the following context setters:
gimp_context_set_opacity(), gimp_context_set_paint_mode(),
gimp_context_set_foreground(), gimp_context_set_background(),
gimp_context_set_pattern().
HELP

    &std_pdb_misc;
    $author .= ' & Raphael Quinet';
    $date = '1995-2000';

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => "The drawable to fill to" },
	{ name => 'fill_type', type => 'enum GimpFillType',
	  desc => 'The type of fill' }
    );

    %invoke = (
	code => <<CODE
{
  if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                 GIMP_PDB_ITEM_CONTENT, error) &&
      gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
    {
      GimpFillOptions *options = gimp_fill_options_new (gimp, NULL, FALSE);

      gimp_context_set_opacity (GIMP_CONTEXT (options),
                                gimp_context_get_opacity (context));
      gimp_context_set_paint_mode (GIMP_CONTEXT (options),
                                   gimp_context_get_paint_mode (context));

      if (gimp_fill_options_set_by_fill_type (options, context,
                                              fill_type, error))
        {
          gimp_drawable_edit_fill (drawable, options, NULL);
        }
      else
        success = FALSE;

      g_object_unref (options);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub drawable_edit_bucket_fill {
    $blurb = <<'BLURB';
Fill the area by a seed fill starting at the specified coordinates.
BLURB

    $help = <<'HELP';
This procedure does a seed fill at the specified coordinates, using
various parameters from the current context.

In the case of merged sampling, the x and y coordinates are relative
to the image's origin; otherwise, they are relative to the drawable's
origin.


This procedure is affected by the following context setters:
gimp_context_set_opacity(), gimp_context_set_paint_mode(),
gimp_context_set_foreground(), gimp_context_set_background(),
gimp_context_set_pattern(), gimp_context_set_sample_threshold(),
gimp_context_set_sample_merged(), gimp_context_set_sample_criterion(),
gimp_context_set_diagonal_neighbors(), gimp_context_set_antialias().
HELP

    &mitch_pdb_misc('2018', '2.10');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	{ name => 'fill_type', type => 'enum GimpFillType',
	  desc => 'The type of fill' },
	{ name => 'x', type => 'float',
	  desc => "The x coordinate of this bucket fill's application." },
	{ name => 'y', type => 'float',
	  desc => "The y coordinate of this bucket fill's application." }
    );

    %invoke = (
        headers => [ qw ("core/gimpdrawable-bucket-fill.h") ],
	code => <<'CODE'
{
  if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                 GIMP_PDB_ITEM_CONTENT, error) &&
      gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
    {
      GimpFillOptions *options = gimp_fill_options_new (gimp, NULL, FALSE);

      gimp_context_set_opacity (GIMP_CONTEXT (options),
                                gimp_context_get_opacity (context));
      gimp_context_set_paint_mode (GIMP_CONTEXT (options),
                                   gimp_context_get_paint_mode (context));

      gimp_fill_options_set_antialias (options,
                                       GIMP_PDB_CONTEXT (context)->antialias);

      if (gimp_fill_options_set_by_fill_type (options, context,
                                              fill_type, error))
        {
          gimp_drawable_bucket_fill (drawable, options,
                                     GIMP_PDB_CONTEXT (context)->sample_transparent,
                                     GIMP_PDB_CONTEXT (context)->sample_criterion,
                                     GIMP_PDB_CONTEXT (context)->sample_threshold,
                                     GIMP_PDB_CONTEXT (context)->sample_merged,
                                     GIMP_PDB_CONTEXT (context)->diagonal_neighbors,
                                     x, y);
        }
      else
        success = FALSE;

      g_object_unref (options);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub drawable_edit_gradient_fill {
    $blurb = <<'BLURB';
Draw a gradient between the starting and ending coordinates with the
specified gradient type.
BLURB

    $help = <<'HELP';
This tool requires information on the gradient type. It creates the
specified variety of gradient using the starting and ending
coordinates as defined for each gradient type.  For shapeburst
gradient types, the context's distance metric is also relevant and can
be updated with gimp_context_set_distance_metric().


This procedure is affected by the following context setters:
gimp_context_set_opacity(), gimp_context_set_paint_mode(),
gimp_context_set_foreground(), gimp_context_set_background(),
gimp_context_set_gradient() and all gradient property settings,
gimp_context_set_distance_metric().
HELP

    &mitch_pdb_misc('2018', '2.10');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	{ name => 'gradient_type',  type => 'enum GimpGradientType',
	  desc => 'The type of gradient' },
	{ name => 'offset', type => '0 <= float',
	  desc => 'Offset relates to the starting and ending coordinates
		   specified for the blend. This parameter is mode dependent.' },
	{ name => 'supersample', type => 'boolean',
	  desc => 'Do adaptive supersampling' },
	{ name => 'supersample_max_depth', type => '1 <= int32 <= 9',
	  no_validate => 1,
	  desc => 'Maximum recursion levels for supersampling' },
	{ name => 'supersample_threshold', type => '0 <= float <= 4',
	  no_validate => 1,
	  desc => 'Supersampling threshold' },
	{ name => 'dither', type => 'boolean',
	  desc => 'Use dithering to reduce banding' },
	{ name => 'x1', type => 'float',
	  desc => "The x coordinate of this gradient's starting point" },
	{ name => 'y1', type => 'float',
	  desc => "The y coordinate of this gradient's starting point" },
	{ name => 'x2', type => 'float',
	  desc => "The x coordinate of this gradient's ending point" },
	{ name => 'y2', type => 'float',
	  desc => "The y coordinate of this gradient's ending point" }
    );

    %invoke = (
        headers => [ qw("core/gimp-gradients.h" "core/gimpdrawable-gradient.h") ],
	code => <<'CODE'
{
  success = (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                        GIMP_PDB_ITEM_CONTENT, error) &&
             gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error));

  if (success)
    {
      if (supersample)
        {
          if (supersample_max_depth < 1 || supersample_max_depth > 9)
            success = FALSE;

          if (supersample_threshold < 0.0 || supersample_threshold > 4.0)
            success = FALSE;
	}
      else
        {
	  supersample_max_depth = CLAMP (supersample_max_depth, 1, 9);
	  supersample_threshold = CLAMP (supersample_threshold, 0.0, 4.0);
	}
   }

  if (success)
    {
      /* all options should have the same value, so pick a random one */
      GimpPaintOptions *options =
        gimp_pdb_context_get_paint_options (GIMP_PDB_CONTEXT (context),
                                            "gimp-paintbrush");

      if (progress)
        gimp_progress_start (progress, FALSE, _("Gradient"));

      gimp_drawable_gradient (drawable,
                              context,
                              gimp_context_get_gradient (context),
                              GIMP_PDB_CONTEXT (context)->distance_metric,
                              gimp_context_get_paint_mode (context),
                              gradient_type,
                              gimp_context_get_opacity (context),
	                      offset,
                              options->gradient_options->gradient_repeat,
                              options->gradient_options->gradient_reverse,
                              options->gradient_options->gradient_blend_color_space,
                              supersample,
			      supersample_max_depth,
			      supersample_threshold,
                              dither,
                              x1, y1, x2, y2,
	                      progress);

      if (progress)
        gimp_progress_end (progress);
    }
}
CODE
    );
}

sub drawable_edit_stroke_selection {
    $blurb = 'Stroke the current selection';

    $help = <<'HELP';
This procedure strokes the current selection, painting along the
selection boundary with the active paint method and brush, or using a
plain line with configurable properties. The paint is applied to the
specified drawable regardless of the active selection.


This procedure is affected by the following context setters:
gimp_context_set_opacity(), gimp_context_set_paint_mode(),
gimp_context_set_paint_method(), gimp_context_set_stroke_method(),
gimp_context_set_foreground(),
gimp_context_set_brush() and all brush property settings,
gimp_context_set_gradient() and all gradient property settings,
gimp_context_set_line_width() and all line property settings,
gimp_context_set_antialias().
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The drawable to stroke to' }
    );

    %invoke = (
	headers => [ qw("core/gimpstrokeoptions.h") ],
	code => <<'CODE'
{
  if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                 GIMP_PDB_ITEM_CONTENT, error) &&
      gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error))
    {
      GimpImage         *image = gimp_item_get_image (GIMP_ITEM (drawable));
      GimpStrokeOptions *options;
      GimpPaintOptions  *paint_options;
      GList             *drawables = g_list_prepend (NULL, drawable);

      options = gimp_pdb_context_get_stroke_options (GIMP_PDB_CONTEXT (context));

      paint_options =
        gimp_pdb_context_get_paint_options (GIMP_PDB_CONTEXT (context), NULL);
      paint_options = gimp_config_duplicate (GIMP_CONFIG (paint_options));

      success = gimp_item_stroke (GIMP_ITEM (gimp_image_get_mask (image)),
                                  drawables, context, options, paint_options,
                                  TRUE, progress, error);

      g_object_unref (paint_options);
      g_list_free (drawables);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub drawable_edit_stroke_item {
    $blurb = 'Stroke the specified item';

    $help = <<'HELP';
This procedure strokes the specified item, painting along its outline
(e.g. along a path, or along a channel's boundary), with the active
paint method and brush, or using a plain line with configurable
properties.


This procedure is affected by the following context setters:
gimp_context_set_opacity(), gimp_context_set_paint_mode(),
gimp_context_set_paint_method(), gimp_context_set_stroke_method(),
gimp_context_set_foreground(),
gimp_context_set_brush() and all brush property settings,
gimp_context_set_gradient() and all gradient property settings,
gimp_context_set_line_width() and all line property settings,
gimp_context_set_antialias().
HELP

    &mitch_pdb_misc('2018', '2.10');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The drawable to stroke to' },
	{ name => 'item', type => 'item',
          desc => 'The item to stroke' }
    );

    %invoke = (
	headers => [ qw("core/gimpstrokeoptions.h") ],
	code => <<'CODE'
{
  if (gimp_pdb_item_is_attached (GIMP_ITEM (drawable), NULL,
                                 GIMP_PDB_ITEM_CONTENT, error) &&
      gimp_pdb_item_is_not_group (GIMP_ITEM (drawable), error) &&
      gimp_pdb_item_is_attached (item,
                                 gimp_item_get_image (GIMP_ITEM (drawable)),
                                 0, error))
    {
      GimpStrokeOptions *options;
      GimpPaintOptions  *paint_options;
      GList             *drawables = g_list_prepend (NULL, drawable);

      options = gimp_pdb_context_get_stroke_options (GIMP_PDB_CONTEXT (context));

      paint_options =
        gimp_pdb_context_get_paint_options (GIMP_PDB_CONTEXT (context), NULL);
      paint_options = gimp_config_duplicate (GIMP_CONFIG (paint_options));

      success = gimp_item_stroke (item, drawables,
                                  context, options, paint_options,
                                  TRUE, progress, error);

      g_object_unref (paint_options);
      g_list_free (drawables);
    }
  else
    success = FALSE;
}
CODE
    );
}


@headers = qw("libgimpconfig/gimpconfig.h"
              "paint/gimppaintoptions.h"
              "core/gimp.h"
              "core/gimpdrawable-edit.h"
              "core/gimpbuffer.h"
              "core/gimpimage.h"
              "core/gimpprogress.h"
              "gimppdb-utils.h"
              "gimppdbcontext.h"
              "gimp-intl.h");

@procs = qw(drawable_edit_clear
            drawable_edit_fill
            drawable_edit_bucket_fill
            drawable_edit_gradient_fill
            drawable_edit_stroke_selection
            drawable_edit_stroke_item);

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

$desc = 'Drawable edit procedures';
$doc_title = 'gimpdrawableedit';
$doc_short_desc = 'Drawable edit functions (clear, fill, gradient, stroke etc.)';
$doc_long_desc = 'Drawable edit functions (clear, fill, gradient, stroke etc.)';

1;