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#!perl -w
use strict;
use Test::More tests => 64;
use Imager;
use Imager::Test qw(test_image);
#$Imager::DEBUG=1;
-d "testout" or mkdir "testout";
Imager::init('log'=>'testout/t65crop.log');
my $img=Imager->new() || die "unable to create image object\n";
ok($img, "created image ph");
SKIP:
{
skip("couldn't load source image", 2)
unless ok($img->open(file=>'testimg/scale.ppm',type=>'pnm'), "loaded source");
my $nimg = $img->crop(top=>10, left=>10, bottom=>25, right=>25);
ok($nimg, "got an image");
ok($nimg->write(file=>"testout/t65.ppm"), "save to file");
}
{ # https://rt.cpan.org/Ticket/Display.html?id=7578
# make sure we get the right type of image on crop
my $src = Imager->new(xsize=>50, ysize=>50, channels=>2, bits=>16);
is($src->getchannels, 2, "check src channels");
is($src->bits, 16, "check src bits");
my $out = $src->crop(left=>10, right=>40, top=>10, bottom=>40);
is($out->getchannels, 2, "check out channels");
is($out->bits, 16, "check out bits");
}
{ # https://rt.cpan.org/Ticket/Display.html?id=7578
print "# try it for paletted too\n";
my $src = Imager->new(xsize=>50, ysize=>50, channels=>3, type=>'paletted');
# make sure color index zero is defined so there's something to copy
$src->addcolors(colors=>[Imager::Color->new(0,0,0)]);
is($src->type, 'paletted', "check source type");
my $out = $src->crop(left=>10, right=>40, top=>10, bottom=>40);
is($out->type, 'paletted', 'check output type');
}
{ # https://rt.cpan.org/Ticket/Display.html?id=7581
# crop() documentation says width/height takes precedence, but is unclear
# from looking at the existing code, setting width/height will go from
# the left of the image, even if left/top are provided, despite the
# sample in the docs
# Let's make sure that things happen as documented
my $src = test_image();
# make sure we get what we want
is($src->getwidth, 150, "src width");
is($src->getheight, 150, "src height");
# the test data is:
# - description
# - hash ref containing args to crop()
# - expected left, top, right, bottom values
# we call crop using the given arguments then call it using the
# hopefully stable left/top/right/bottom/arguments
# this is kind of lame, but I don't want to include a rewritten
# crop in this file
my @tests =
(
[
"basic",
{ left=>10, top=>10, right=>70, bottom=>80 },
10, 10, 70, 80,
],
[
"middle",
{ width=>50, height=>50 },
50, 50, 100, 100,
],
[
"lefttop",
{ left=>20, width=>70, top=>30, height=>90 },
20, 30, 90, 120,
],
[
"bottomright",
{ right=>140, width=>50, bottom=>130, height=>60 },
90, 70, 140, 130,
],
[
"acrossmiddle",
{ top=>40, bottom=>110 },
0, 40, 150, 110,
],
[
"downmiddle",
{ left=>40, right=>110 },
40, 0, 110, 150,
],
[
"rightside",
{ left=>80, },
80, 0, 150, 150,
],
[
"leftside",
{ right=>40 },
0, 0, 40, 150,
],
[
"topside",
{ bottom=>40, },
0, 0, 150, 40,
],
[
"bottomside",
{ top=>90 },
0, 90, 150, 150,
],
[
"overright",
{ left=>100, right=>200 },
100, 0, 150, 150,
],
[
"overtop",
{ bottom=>50, height=>70 },
0, 0, 150, 50,
],
[
"overleft",
{ right=>30, width=>60 },
0, 0, 30, 150,
],
[
"overbottom",
{ top=>120, height=>60 },
0, 120, 150, 150,
],
);
for my $test (@tests) {
my ($desc, $args, $left, $top, $right, $bottom) = @$test;
my $out = $src->crop(%$args);
ok($out, "got output for $desc");
my $cmp = $src->crop(left=>$left, top=>$top, right=>$right, bottom=>$bottom);
ok($cmp, "got cmp for $desc");
# make sure they're the same
my $diff = Imager::i_img_diff($out->{IMG}, $cmp->{IMG});
is($diff, 0, "difference should be 0 for $desc");
}
}
{ # https://rt.cpan.org/Ticket/Display.html?id=7581
# previously we didn't check that the result had some pixels
# make sure we do
my $src = test_image();
ok(!$src->crop(left=>50, right=>50), "nothing across");
cmp_ok($src->errstr, '=~', qr/resulting image would have no content/,
"and message");
ok(!$src->crop(top=>60, bottom=>60), "nothing down");
cmp_ok($src->errstr, '=~', qr/resulting image would have no content/,
"and message");
}
{ # http://rt.cpan.org/NoAuth/Bug.html?id=9672
my $warning;
local $SIG{__WARN__} =
sub {
$warning = "@_";
my $printed = $warning;
$printed =~ s/\n$//;
$printed =~ s/\n/\n\#/g;
print "# ",$printed, "\n";
};
my $img = Imager->new(xsize=>10, ysize=>10);
$img->crop(left=>5);
cmp_ok($warning, '=~', 'void', "correct warning");
cmp_ok($warning, '=~', 't65crop\\.t', "correct file");
}
{
my $src = test_image();
ok(!$src->crop( top=>1000, bottom=>1500, left=>0, right=>100 ),
"outside of image" );
cmp_ok($src->errstr, '=~', qr/outside of the image/, "and message");
ok(!$src->crop( top=>100, bottom=>1500, left=>1000, right=>1500 ),
"outside of image" );
cmp_ok($src->errstr, '=~', qr/outside of the image/, "and message");
}
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