PIKApp/pdb/groups/floating_sel.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 floating_sel_remove {
    $blurb = <<'BLURB';
Remove the specified floating selection from its associated drawable.
BLURB

    $help = <<'HELP';
This procedure removes the floating selection completely, without any side
effects. The associated drawable is then set to active.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'floating_sel', type => 'layer',
	  desc => 'The floating selection' }
    );

    %invoke = (
	code => <<'CODE'
{
  if (pika_layer_is_floating_sel (floating_sel))
    {
      pika_image_remove_layer (pika_item_get_image (PIKA_ITEM (floating_sel)),
                               floating_sel, TRUE, NULL);
    }
  else
    {
      g_set_error_literal (error, PIKA_PDB_ERROR,
                           PIKA_PDB_ERROR_INVALID_ARGUMENT,
                           _("Cannot remove this layer because "
                             "it is not a floating selection."));
      success = FALSE;
    }
}
CODE
    );
}

sub floating_sel_anchor {
    $blurb = <<'BLURB';
Anchor the specified floating selection to its associated drawable.
BLURB

    $help = <<'HELP';
This procedure anchors the floating selection to its associated drawable. This 
is similar to merging with a merge type of ClipToBottomLayer.  The floating
selection layer is no longer valid after this operation.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'floating_sel', type => 'layer',
	  desc => 'The floating selection' }
    );

    %invoke = (
	code => <<'CODE'
{
  if (pika_layer_is_floating_sel (floating_sel))
    {
      floating_sel_anchor (floating_sel);
    }
  else
    {
      g_set_error_literal (error, PIKA_PDB_ERROR,
                           PIKA_PDB_ERROR_INVALID_ARGUMENT,
                           _("Cannot anchor this layer because "
                             "it is not a floating selection."));
      success = FALSE;
    }
}
CODE
    );
}

sub floating_sel_to_layer {
    $blurb = 'Transforms the specified floating selection into a layer.';

    $help = <<'HELP';
This procedure transforms the specified floating selection into a layer with
the same offsets and extents. The composited image will look precisely the
same, but the floating selection layer will no longer be clipped to the extents
of the drawable it was attached to. The floating selection will become the
active layer. This procedure will not work if the floating selection has a
different base type from the underlying image. This might be the case if the
floating selection is above an auxiliary channel or a layer mask.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'floating_sel', type => 'layer',
	  desc => 'The floating selection' }
    );

    %invoke = (
	code => <<'CODE'
{
  if (pika_layer_is_floating_sel (floating_sel))
    {
      success = floating_sel_to_layer (floating_sel, error);
    }
  else
    {
      g_set_error_literal (error, PIKA_PDB_ERROR,
                           PIKA_PDB_ERROR_INVALID_ARGUMENT,
                           _("Cannot convert this layer to a normal layer "
                             "because it is not a floating selection."));
      success = FALSE;
    }
}
CODE
    );
}

sub floating_sel_attach {
    $blurb = <<'BLURB';
Attach the specified layer as floating to the specified drawable.
BLURB

    $help = <<'HELP';
This procedure attaches the layer as floating selection to the drawable.
HELP

    &std_pdb_misc;

    @inargs = (
	{ name => 'layer', type => 'layer',
	  desc => 'The layer (is attached as floating selection)' },
	{ name => 'drawable', type => 'drawable',
	  desc => 'The drawable (where to attach the floating selection)' }
    );

    %invoke = (
	code => <<'CODE'
{
  if (pika_pdb_item_is_attached (PIKA_ITEM (drawable), NULL,
                                 PIKA_PDB_ITEM_CONTENT, error) &&
      pika_pdb_item_is_not_group (PIKA_ITEM (drawable), error))
    {
      /* see layer-new */
      if (pika_drawable_is_gray (PIKA_DRAWABLE (layer)) &&
          PIKA_IS_LAYER (drawable))
        pika_layer_fix_format_space (layer, TRUE, FALSE);

      floating_sel_attach (layer, drawable);
    }
  else
    success = FALSE;
}
CODE
    );
}


@headers = qw("core/pikaimage.h"
              "core/pikalayer-floating-selection.h"
              "pikapdberror.h"
              "pikapdb-utils.h"
              "pika-intl.h");

@procs = qw(floating_sel_remove
            floating_sel_anchor
            floating_sel_to_layer
            floating_sel_attach);

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

$desc = 'Floating selections';
$doc_title = 'pikafloatingsel';
$doc_short_desc = 'Functions for removing or attaching floating selections.';
$doc_long_desc = 'Functions for removing or attaching floating selections.';

1;