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43 lines
1.3 KiB
43 lines
1.3 KiB
8 years ago
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<?
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# preparing PNG fonts to use with KCAPTCHA.
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# reads files from folder "../fonts0", scans for symbols ans spaces and writes new font file with cached symbols positions to filder "../fonts"
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# comment or remove next line for using (commented for security reason):
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//exit();
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if ($handle = opendir('../fonts0')) {
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while (false !== ($file = readdir($handle))) {
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if ($file == "." || $file == "..") {
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continue;
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}
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$img=imagecreatefrompng('../fonts0/'.$file);
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imageAlphaBlending($img, false);
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imageSaveAlpha($img, true);
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$transparent=imagecolorallocatealpha($img,255,255,255,127);
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$white=imagecolorallocate($img,255,255,255);
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$black=imagecolorallocate($img,0,0,0);
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$gray=imagecolorallocate($img,100,100,100);
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for($x=0;$x<imagesx($img);$x++){
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$space=true;
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$column_opacity=0;
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for($y=1;$y<imagesy($img);$y++){
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$rgb = ImageColorAt($img, $x, $y);
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$opacity=$rgb>>24;
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if($opacity!=127){
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$space=false;
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}
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$column_opacity+=127-$opacity;
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}
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if(!$space){
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imageline($img,$x,0,$x,0,$column_opacity<200?$gray:$black);
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}
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}
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imagepng($img,'../fonts/'.$file);
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}
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closedir($handle);
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}
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?>
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