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#!/opt/bin/perl
eval 'exec /opt/bin/perl -S $0 ${1+"$@"}'
if 0; # not running under some shell
use Gimp qw(:auto __ N_);
use Gimp::Fu;
#Gimp::set_trace(TRACE_ALL);
register "stampify",
"Makes an image look like a postage stamp.",
"This plug-in works from the active layer. Depending on the size of the image, perforations may look strange. Test alternatives!",
"Claes G Lindblad <claesg\@algonet.se>",
"Claes G Lindblad <claesg\@algonet.se>",
"990328",
N_"<Image>/Filters/Render/Stampify...",
"*",
[
[PF_COLOR, "paper", "Paper colour", [242, 242, 242]],
[PF_COLOR, "hole", "Hole colour", [0, 0, 0]],
[PF_INT32, "diameter", "Diameter of perforation", 10],
[PF_INT32, "gap", "Gap between perforations", 5],
[PF_INT32, "marg", "Marginal between art and perforations", 7]
],
sub {
my ($img, $drawable, $paper, $hole, $diameter, $gap, $marg) = @_;
$nw = int(gimp_image_width($img) + 2 * $marg + $diameter);
$nh = int(gimp_image_height($img) + 2 * $marg + $diameter);
my $img2 = gimp_image_new($nw, $nh, RGB);
my $layer1 = gimp_layer_new($img2, $nw, $nh, RGBA_IMAGE, "Layer 1", 100, NORMAL_MODE);
gimp_image_add_layer($img2, $layer1, 0);
gimp_image_set_active_layer($img2, $layer1);
gimp_palette_set_background($paper);
gimp_drawable_fill($layer1, 1);
# create horisontal holes
gimp_selection_none($img2);
my $nholes = int (($nw + $gap) / ($diameter + $gap) + 0.5);
$pos = 0;
for ($i = 0; $i<$nholes; $i++) {
gimp_ellipse_select($img2,
$pos, 0,
$diameter, $diameter,
CHANNEL_OP_ADD, 1, 0, 0);
$pos = $pos + $diameter + $gap;
}
# create vertical holes
my $nholes = int (($nh + $gap) / ($diameter + $gap) + 0.5);
$pos = 0;
for ($i = 0; $i<$nholes; $i++) {
gimp_ellipse_select($img2,
0, $pos,
$diameter, $diameter,
CHANNEL_OP_ADD, 1, 0, 0);
$pos = $pos + $diameter + $gap;
}
gimp_palette_set_background($hole);
gimp_edit_fill($layer1, BACKGROUND_FILL);
gimp_selection_none($img2);
# here comes the clever part! :-)
# offset horis and vert holes by half the diameter
gimp_drawable_offset($layer1, 1, 0, -($diameter / 2), -($diameter / 2));
# insert $img into a new layer in $img2
# gimp_selection_all($img);
gimp_edit_copy($drawable);
my $float = gimp_edit_paste($layer1, 0);
gimp_floating_sel_anchor($float);
# and return command to The Gimp.
return $img2;
};
exit main;
=head1 LICENSE
Copyright Claes G. Lindblad.
Distrubuted under the terms of the GNU Public License, v2 or higher.
=cut
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