Brad Fitzpatrick (brad) wrote in fotobilder,
Brad Fitzpatrick

Transparent IE PNG... Need help

Here's some code to make a transparent PNG. However, it's not transparent in IE, because IE only handles very simple PNG files.

I've fought with this far too long. It should be easy. I even resorted to trying for awhile, even though that'd be a new dependency, but segfaults because of all the libpng binary incompatibility issues, and I don't want to fight that and mess up my system.

Your challenge, should you choose to accept it... make this work in IE:

use Image::Magick;
my ($w, $h) = (100, 100);

my $img = Image::Magick->new(size=>"${w}x$h");
$img->Quantize(colors => 256,
               colorspace => 'Transparent',
               global_colormap => 'True');
$img->Set(magick => 'png');

$img->Draw( 'primitive' => 'rectangle',
            'points' => join(',', 5, 5, 90, 90),
            'stroke' => 'black',
$img->Draw( 'primitive' => 'rectangle',
            'points' => join(',', 6, 6, 89, 89),
            'stroke' => 'white',
$img->Draw( 'primitive' => 'circle',
            'points' => join(',', 44,44,47,47),
            'stroke' => 'red',
            'fill' => 'yellow',
            'antialias' => 'false',

print $img->ImageToBlob();

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