PIKApp/pdb/groups/paint_tools.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 stroke_arg () {
    { name => 'strokes', type => 'floatarray',
      desc => 'Array of stroke coordinates: { s1.x, s1.y, s2.x, s2.y, ...,
	       sn.x, sn.y }',
      array => { type => '2 <= int32',
		 desc => 'Number of stroke control points (count each
			  coordinate as 2 points)' } }
}

# The defs

sub airbrush {
    $blurb = <<'BLURB';
Paint in the current brush with varying pressure. Paint application is
time-dependent.
BLURB

    $help = <<'HELP';
This tool simulates the use of an airbrush. Paint pressure represents the
relative intensity of the paint application. High pressure results in a thicker
layer of paint while low pressure results in a thinner layer.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	{ name => 'pressure', type => '0 <= float <= 100',
	  desc => 'The pressure of the airbrush strokes' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-airbrush");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      g_object_set (options,
                    "pressure", pressure,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub airbrush_default {
    $blurb = <<'BLURB';
Paint in the current brush with varying pressure. Paint application is
time-dependent.
BLURB

    $help = <<'HELP';
This tool simulates the use of an airbrush. It is similar to pika_airbrush()
except that the pressure is derived from the airbrush tools options box.
It the option has not been set the default for the option will be used.
HELP

    &andy_pdb_misc('1999');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-airbrush");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}


sub clone {
    $blurb = <<'BLURB';
Clone from the source to the dest drawable using the current brush
BLURB

    $help = <<'HELP';
This tool clones (copies) from the source drawable starting at the specified
source coordinates to the dest drawable. If the "clone_type" argument is set
to PATTERN-CLONE, then the current pattern is used as the source and the
"src_drawable" argument is ignored. Pattern cloning assumes a tileable
pattern and mods the sum of the src coordinates and subsequent stroke offsets
with the width and height of the pattern. For image cloning, if the sum of the
src coordinates and subsequent stroke offsets exceeds the extents of the src
drawable, then no paint is transferred. The clone tool is capable of
transforming between any image types including RGB->Indexed--although
converting from any type to indexed is significantly slower.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	{ name => 'src_drawable', type => 'drawable',
	  desc => 'The source drawable' },
	{ name => 'clone_type', type => 'enum PikaCloneType',
	  desc => 'The type of clone' },
	{ name => 'src_x', type => 'float',
	  desc => 'The x coordinate in the source image' },
	{ name => 'src_y', type => 'float',
	  desc => 'The y coordinate in the source image' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-clone");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      GList *src_drawables;

      options = pika_config_duplicate (PIKA_CONFIG (options));
      src_drawables = g_list_prepend (NULL, src_drawable);

      g_object_set (options,
                    "clone-type",    clone_type,
                    "src-drawables", src_drawables,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
                                    "undo-desc", options->paint_info->blurb,
                                    "src-x",     (gint) floor (src_x),
                                    "src-y",     (gint) floor (src_y),
                                    NULL);
      g_list_free (src_drawables);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub clone_default {
    $blurb = <<'BLURB';
Clone from the source to the dest drawable using the current brush
BLURB

    $help = <<'HELP';
This tool clones (copies) from the source drawable starting at the specified
source coordinates to the dest drawable. This function performs exactly
the same as the pika_clone() function except that the tools arguments are
obtained from the clones option dialog. It this dialog has not been activated
then the dialogs default values will be used.
HELP

    &andy_pdb_misc('1999');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-clone");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}


sub convolve_default {
    $blurb = 'Convolve (Blur, Sharpen) using the current brush.';

    $help = <<'HELP';
This tool convolves the specified drawable with either a sharpening or blurring
kernel. This function performs exactly the same as the pika_convolve()
function except that the tools arguments are obtained from the convolve
option dialog. It this dialog has not been activated then the dialogs
default values will be used.
HELP

    &andy_pdb_misc('1999');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-convolve");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub convolve {
    $blurb = 'Convolve (Blur, Sharpen) using the current brush.';

    $help = <<'HELP';
This tool convolves the specified drawable with either a sharpening or blurring
kernel. The pressure parameter controls the magnitude of the operation. Like
the paintbrush, this tool linearly interpolates between the specified stroke
coordinates.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	{ name => 'pressure', type => '0 <= float <= 100',
	  desc => 'The pressure' },
	{ name => 'convolve_type', type => 'enum PikaConvolveType',
	  desc => 'Convolve type' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-convolve");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      g_object_set (options,
                    "type", convolve_type,
                    "rate", pressure,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub eraser_default {
    $blurb = 'Erase using the current brush.';

    $help = <<'HELP';
This tool erases using the current brush mask. This function performs exactly
the same as the pika_eraser() function except that the tools arguments are
obtained from the eraser option dialog. It this dialog has not been activated
then the dialogs default values will be used.
HELP

    &andy_pdb_misc('1999');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-eraser");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub eraser {
    $blurb = 'Erase using the current brush.';

    $help = <<'HELP';
This tool erases using the current brush mask. If the specified drawable
contains an alpha channel, then the erased pixels will become transparent.
Otherwise, the eraser tool replaces the contents of the drawable with the
background color. Like paintbrush, this tool linearly interpolates between the
specified stroke coordinates.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg,
	{ name => 'hardness', type => 'enum PikaBrushApplicationMode',
	  desc => 'How to apply the brush' },
	{ name => 'method', type => 'enum PikaPaintApplicationMode',
	  desc => 'The paint method to use' }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-eraser");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      g_object_set (options,
                    "application-mode", method,
                    "hard",             hardness,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub anti_eraser {
    $blurb = 'Anti-erase using the current brush.';

    $help = <<'HELP';
This tool anti-erases using the current brush mask. If the specified drawable
contains an alpha channel, then the erased pixels will become opaque.
Otherwise, the eraser tool replaces the contents of the drawable with the
background color. Like paintbrush, this tool linearly interpolates between the
specified stroke coordinates.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg,
	{ name => 'hardness', type => 'enum PikaBrushApplicationMode',
	  desc => 'How to apply the brush' },
	{ name => 'method', type => 'enum PikaPaintApplicationMode',
	  desc => 'The paint method to use' }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-eraser");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      g_object_set (options,
                    "application-mode", method,
                    "hard",             hardness,
                    "anti-erase",       TRUE,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub heal {
    $blurb = <<'BLURB';
Heal from the source to the dest drawable using the current brush
BLURB

    $help = <<'HELP';
This tool heals the source drawable starting at the specified
source coordinates to the dest drawable. For image healing, if the sum of the
src coordinates and subsequent stroke offsets exceeds the extents of the src
drawable, then no paint is transferred. The healing tool is capable of
transforming between any image types except RGB->Indexed.
HELP

    &kevins_pdb_misc('2006', '2.4');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	{ name => 'src_drawable', type => 'drawable',
	  desc => 'The source drawable' },
	{ name => 'src_x', type => 'float',
	  desc => 'The x coordinate in the source image' },
	{ name => 'src_y', type => 'float',
	  desc => 'The y coordinate in the source image' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-heal");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      GList *src_drawables;

      options = pika_config_duplicate (PIKA_CONFIG (options));
      src_drawables = g_list_prepend (NULL, src_drawable);

      g_object_set (options,
                    "src-drawables", src_drawables,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
                                    "undo-desc", options->paint_info->blurb,
                                    "src-x",     (gint) floor (src_x),
                                    "src-y",     (gint) floor (src_y),
                                    NULL);
      g_list_free (src_drawables);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub heal_default {
    $blurb = <<'BLURB';
Heal from the source to the dest drawable using the current brush
BLURB

    $help = <<'HELP';
This tool heals from the source drawable starting at the specified
source coordinates to the dest drawable. This function performs exactly
the same as the pika_heal() function except that the tools arguments are
obtained from the healing option dialog. It this dialog has not been activated
then the dialogs default values will be used.
HELP

    &kevins_pdb_misc('2006', '2.4');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-heal");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub paintbrush {
    $blurb = <<'BLURB';
Paint in the current brush with optional fade out parameter and pull colors
from a gradient.
BLURB

    $help = <<'HELP';
This tool is the standard paintbrush. It draws linearly interpolated lines
through the specified stroke coordinates. It operates on the specified drawable
in the foreground color with the active brush. The 'fade-out' parameter is
measured in pixels and allows the brush stroke to linearly fall off. The
pressure is set to the maximum at the beginning of the stroke. As the distance
of the stroke nears the fade-out value, the pressure will approach zero. The
gradient-length is the distance to spread the gradient over. It is measured in
pixels. If the gradient-length is 0, no gradient is used.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	{ name => 'fade_out', type => '0 <= float',
	  desc => 'Fade out parameter' },
	  &stroke_arg,
	{ name => 'method', type => 'enum PikaPaintApplicationMode',
	  desc => 'The paint method to use' },
	{ name => 'gradient_length', type => '0 <= float',
	  desc => 'Length of gradient to draw' }
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-paintbrush");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      PikaDynamics *pdb_dynamics  = PIKA_DYNAMICS (pika_dynamics_new (context, "pdb"));
      PikaDynamics *user_dynamics = pika_context_get_dynamics (context);

      options = pika_config_duplicate (PIKA_CONFIG (options));

      g_object_set (options,
                    "application-mode", method,
                    "fade-length",      MAX (fade_out, gradient_length),
                    NULL);

      if (fade_out > 0)
        {
           PikaDynamicsOutput *opacity_output =
             pika_dynamics_get_output (pdb_dynamics,
                                       PIKA_DYNAMICS_OUTPUT_OPACITY);

           g_object_set (opacity_output,
                         "use-fade", TRUE,
                         NULL);
        }

      if (gradient_length > 0)
        {
          PikaDynamicsOutput *color_output =
            pika_dynamics_get_output (pdb_dynamics,
                                      PIKA_DYNAMICS_OUTPUT_COLOR);

          g_object_set (color_output,
                        "use-fade", TRUE,
                        NULL);
        }

      pika_context_set_dynamics (context, pdb_dynamics);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);

      pika_context_set_dynamics (context, user_dynamics);

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

sub paintbrush_default {
    $blurb = <<'BLURB';
Paint in the current brush. The fade out parameter and pull colors
from a gradient parameter are set from the paintbrush options dialog. If this
dialog has not been activated then the dialog defaults will be used.
BLURB

    $help = <<'HELP';
This tool is similar to the standard paintbrush. It draws linearly interpolated lines
through the specified stroke coordinates. It operates on the specified drawable
in the foreground color with the active brush. The 'fade-out' parameter is
measured in pixels and allows the brush stroke to linearly fall
off (value obtained from the option dialog). The pressure is set
to the maximum at the beginning of the stroke. As the distance
of the stroke nears the fade-out value, the pressure will approach zero. The
gradient-length (value obtained from the option dialog) is the
distance to spread the gradient over. It is measured in pixels. If
the gradient-length is 0, no gradient is used.
HELP

    &andy_pdb_misc('1999');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-paintbrush");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub pencil {
    $blurb = 'Paint in the current brush without sub-pixel sampling.';

    $help = <<'HELP';
This tool is the standard pencil. It draws linearly interpolated lines through
the specified stroke coordinates. It operates on the specified drawable in the
foreground color with the active brush. The brush mask is treated as though it
contains only black and white values. Any value below half is treated as black;
any above half, as white.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-pencil");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub smudge {
    $blurb  = 'Smudge image with varying pressure.';

    $help = <<'HELP';
This tool simulates a smudge using the current brush. High pressure results
in a greater smudge of paint while low pressure results in a lesser smudge.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	 { name => 'pressure', type => '0 <= float <= 100',
	   desc => 'The pressure of the smudge strokes' },
	   &stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-smudge");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      g_object_set (options,
                    "rate", pressure,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub smudge_default {
    $blurb  = <<'BLURB';
Smudge image with varying pressure.
BLURB

    $help = <<'HELP';
This tool simulates a smudge using the current brush. It behaves exactly
the same as pika_smudge() except that the pressure value is taken from the
smudge tool options or the options default if the tools option dialog has
not been activated.
HELP

    &andy_pdb_misc('1999');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-smudge");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub dodgeburn {
    $blurb  = <<'BLURB';
Dodgeburn image with varying exposure.
BLURB

    $help = <<'HELP';
Dodgeburn. More details here later.
HELP

    &andy_pdb_misc('1999');

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	 { name => 'exposure', type => '0 <= float <= 100',
	   desc => 'The exposure of the  strokes' },
        { name => 'dodgeburn_type', type => 'enum PikaDodgeBurnType',
	  desc => 'The type either dodge or burn' },
        { name => 'dodgeburn_mode', type => 'enum PikaTransferMode',
	  desc => 'The mode' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-dodge-burn");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      g_object_set (options,
                    "type",     dodgeburn_type,
                    "mode",     dodgeburn_mode,
                    "exposure", exposure,
                    NULL);

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}

sub dodgeburn_default {
    $blurb  = <<'BLURB';
Dodgeburn image with varying exposure. This is the same as the
pika_dodgeburn() function except that the exposure, type and mode are
taken from the tools option dialog. If the dialog has not been
activated then the defaults as used by the dialog will be used.
BLURB

    $help = <<'HELP';
Dodgeburn. More details here later.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => 'The affected drawable' },
	&stroke_arg
    );

    %invoke = (
	code => <<'CODE'
{
  PikaPaintOptions *options =
    pika_pdb_context_get_paint_options (PIKA_PDB_CONTEXT (context),
                                        "pika-dodge-burn");

  if (options &&
      pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      options = pika_config_duplicate (PIKA_CONFIG (options));

      success = paint_tools_stroke (pika, context, options, drawable,
                                    num_strokes, strokes, error,
				    "undo-desc", options->paint_info->blurb,
				    NULL);
    }
  else
    success = FALSE;
}
CODE
    );
}


$extra{app}->{code} = <<'CODE';
static const PikaCoords default_coords = PIKA_COORDS_DEFAULT_VALUES;

static gboolean
paint_tools_stroke (Pika              *pika,
                    PikaContext       *context,
                    PikaPaintOptions  *options,
                    PikaDrawable      *drawable,
                    gint               n_strokes,
                    const gdouble     *strokes,
                    GError           **error,
                    const gchar       *first_property_name,
                    ...)
{
  PikaPaintCore *core;
  PikaCoords    *coords;
  gboolean       retval;
  gint           i;
  va_list        args;

  n_strokes /= 2;  /* #doubles -> #points */

  /*  undefine the paint-relevant context properties and get them
   *  from the current context
   */
  pika_context_define_properties (PIKA_CONTEXT (options),
                                  PIKA_CONTEXT_PROP_MASK_PAINT,
                                  FALSE);
  pika_context_set_parent (PIKA_CONTEXT (options), context);

  va_start (args, first_property_name);
  core = PIKA_PAINT_CORE (g_object_new_valist (options->paint_info->paint_type,
                                               first_property_name, args));
  va_end (args);

  coords = g_new (PikaCoords, n_strokes);

  for (i = 0; i < n_strokes; i++)
    {
      coords[i]   = default_coords;
      coords[i].x = strokes[2 * i];
      coords[i].y = strokes[2 * i + 1];
    }

  retval = pika_paint_core_stroke (core, drawable, options,
                                   coords, n_strokes, TRUE,
                                   error);

  g_free (coords);

  g_object_unref (core);
  g_object_unref (options);

  return retval;
}
CODE


@headers = qw("libpikamath/pikamath.h"
              "libpikaconfig/pikaconfig.h"
              "core/pikadynamics.h"
              "core/pikapaintinfo.h"
              "paint/pikapaintcore.h"
              "paint/pikapaintcore-stroke.h"
              "paint/pikapaintoptions.h"
              "pikapdbcontext.h"
              "pikapdb-utils.h");

@procs = qw(airbrush airbrush_default
            clone clone_default
            convolve convolve_default
            dodgeburn dodgeburn_default
	    eraser eraser_default
            heal heal_default
            paintbrush paintbrush_default
	    pencil
            smudge smudge_default);

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

$desc = 'Paint Tool procedures';
$doc_title = 'pikapainttools';
$doc_short_desc = 'Access to toolbox paint tools.';
$doc_long_desc = 'Functions giving access to toolbox paint tools.';

1;