# The GIMP -- an 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 2 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, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# "Perlized" from C source by Manish Singh <yosh@gimp.org>

# Common arguments
sub inargs {
    @inargs = (
	{ name => 'drawable', type => 'drawable',
	  desc => "The drawable to @{[shift]}" }
    );
}

# Common invoker for checking for image/drawable consistency
sub invoke {
    %invoke = (
	headers => [ qw("global_edit.h") ],
	vars => [ 'GimpImage *gimage' ],
	code => <<CODE
{
  gimage = drawable_gimage (GIMP_DRAWABLE (drawable));
  success = @{[shift]};
}
CODE
    );
}

# The defs

sub edit_cut {
    $blurb = 'Cut from the specified drawable.';

    $help = <<'HELP';
If there is a selection in the image, then the area specified by the selection
is cut from the specified drawable and placed in an internal GIMP edit buffer.
It can subsequently be retrieved using the 'gimp-edit-paste' command. If there
is no selection, then the specified drawable will be removed and its contents
stored in the internal GIMP edit buffer. The drawable MUST belong to the
specified image, or an error is returned.
HELP

    &std_pdb_misc;
    &inargs('cut from');
    &invoke('edit_cut (gimage, drawable) != NULL');
}

sub edit_copy {
    $blurb = 'Copy from the specified drawable.';

    $help = <<'HELP';
If there is a selection in the image, then the area specified by the selection
is copied from the specified drawable and placed in an internal GIMP edit
buffer. It can subsequently be retrieved using the 'gimp-edit-paste' command.
If there is no selection, then the specified drawable's contents will be stored
in the internal GIMP edit buffer. The drawable MUST belong to the specified
image, or an error is returned.
HELP

    &std_pdb_misc;
    &inargs('copy from');
    &invoke('edit_copy (gimage, drawable) != NULL');
}

sub edit_paste {
    $blurb = 'Paste buffer to the specified drawable.';

    $help = <<'HELP';
This procedure pastes a copy of the internal GIMP edit buffer to the specified
drawable. The GIMP edit buffer will be empty unless a call was previously made
to either 'gimp-edit-cut' or 'gimp-edit-copy'. The "paste_into" option
specifies whether to clear the current image selection, or to paste the buffer
"behind" the selection. This allows the selection to act as a mask for the
pasted buffer. Anywhere that the selection mask is non-zero, the pasted buffer
will show through. The pasted buffer will be a new layer in the image which is
designated as the image floating selection. If the image has a floating
selection at the time of pasting, the old floating selection will be anchored
to it's drawable before the new floating selection is added. This procedure
returns the new floating layer. The resulting floating selection will already
be attached to the specified drawable, and a subsequent call to
floating_sel_attach is not needed.
HELP

    &std_pdb_misc;

    &inargs('paste to');
    push @inargs, { name => 'paste_into', type => 'boolean',
		    desc => 'Clear selection, or paste behind it?' };

    @outargs = (
	{ name  => 'floating_sel', type  => 'layer',
	  desc  => 'The new floating selection', alias => 'layer', init => 1 }
    );

    &invoke('layer != NULL');
    $cmd = "layer = edit_paste (gimage, drawable, global_buf, paste_into);\n";
    $invoke{code} =~ s/(success.*$)/"$cmd  $1"/me;
}

sub 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.
HELP

    &std_pdb_misc;
    &inargs('clear from');
    &invoke('edit_clear (gimage, drawable)');
}

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

    $help = <<'HELP';
This procedure fills the specified drawable with the background color. This
procedure only affects regions within a selection if there is a selection
active.
HELP

    &std_pdb_misc;
    &inargs('fill to');
    &invoke('edit_fill (gimage, drawable)');
}

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

    $help = <<'HELP';
This procedure strokes the current selection, painting along the selection
boundary with the active brush and foreground color. The paint is applied to
the specified drawable regardless of the active selection.
HELP

    &std_pdb_misc;
    &inargs('stroke to');
    &invoke('gimage_mask_stroke (gimage, drawable)');
    push @{$invoke{headers}}, qw("gimage_mask.h");
}

# For edit_paste
$extra{app}->{decls} = "extern TileManager *global_buf;\n";

@procs = qw(edit_cut edit_copy edit_paste edit_clear edit_fill edit_stroke);
%exports = (app => [@procs]);

$desc = 'Edit procedures';

1;
