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Convert tranparancy to white #11

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Convert tranparancy to white #11

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8 changes: 8 additions & 0 deletions spec/Zpl/ImageSpec.php
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,14 @@ function it_converts_large_images_to_compressed_ascii_hexadecimal_bitmaps()

$this->toAscii()->shouldReturn(file_get_contents(__DIR__ . '/../test_1000.txt'));
}

function it_interpets_transparent_as_white()
{
$decoder = GdDecoder::fromPath(__DIR__ . '/../test_85.png');
$this->beConstructedWith($decoder);

$this->toAscii()->shouldReturn(trim(file_get_contents(__DIR__ . '/../test_85.txt')));
}

function it_gets_the_height_of_the_image_in_rows()
{
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1 change: 1 addition & 0 deletions spec/test_85.txt
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Q03,Q078,Q0DC,Q09C,P019A,P0369,P036C8,P02EC8,K01EI07EC4,K01FC005EC4,K01C700DEC2,K0259C0DFC2,K026E70FF4,K026F18BFC1,K0237CDBEC1,K0237F7BEC,K021BFBDEC,K020DFDEEC08,K020EFEF6C08,K02067F76C08,K02033FBA808,K02019FDD808,K0200EFFD8080FFC,K020073EF8087IF,K020039E7009JFC,K02I0E5F00KFE,K02I07A301LF,K03I01C107LF8,K01J0C08MFC,K01L01MFC,K01L03MFE,K018K03MFE,L08K01NF,L08K011MF,L08K01F7FF7IF,L04L03DFF9IF8,L02M07F4EIF8,L018L01F43BFF8,M06M0740EFF8,M01CL01C03BF8,N03F8N0FF8,Y07F8,Y01F,,U04,U0406,Q08001013,Q0E0010218,Q0AJ021C,I03F8J01AJ021C,001IFJ01FK01C,007IF8I01F8I022C,00JFEI03E8J064,03KFI03F4J0DC,03KF8007FAJ07C,07KFC007FDJ038,0LFC007FE8,0LFE00FFEC,1LFE00IF4,1LFE00IFC,3MF01IF,1MF01IF,1JFE1F01IF8,1JF80600IFC,3JFK0IFA,3JFK0DFFD,3JFK07IF8,7JFK06IF8,7JFK03IF8,7JF8J01FFEC,7JF8K0IFC,7JFCK07BE8,KFCK03FF8,KF8L0FF,JFE,:KF,KF8,7JF8,7JFC,::3JF4,3JFC,1JF8,0IFD,0JF,07IF,01FFE,007F8,,:::::::::
14 changes: 14 additions & 0 deletions src/Zpl/GdDecoder.php
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Expand Up @@ -29,6 +29,19 @@ public function __construct($image)
imagepalettetotruecolor($image);
}

// Converts transparancy to white.
$width = imagesx($image);
$height = imagesy($image);
$newImage = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($newImage, 255, 255, 255);
imagefill($newImage, 0, 0, $white);
imagecopyresampled(
$newImage, $image,
0, 0, 0, 0,
$width, $height,
$width, $height);
$image = $newImage;

imagefilter($image, IMG_FILTER_GRAYSCALE);

$this->image = $image;
Expand Down Expand Up @@ -119,3 +132,4 @@ public function getBitAt(int $x, int $y): int
return (imagecolorat($this->image, $x, $y) & 0xFF) < 127 ? 1 : 0;
}
}