mirror of https://github.com/BOINC/boinc.git
59 lines
1.7 KiB
PHP
59 lines
1.7 KiB
PHP
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<?php
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function intelligently_scale_image($sourcefile, $fw, $fh) {
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//In order to use the default built-in GD library all imageCreateTrueColor
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//has been commented out.
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//If you whish to enable the advanced GD features (resamples copy for instance)
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//simply switch back to the commented functions.
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list($ow, $oh, $from_type) = getimagesize($sourcefile);
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switch($from_type) {
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case 1: // GIF
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$srcImage = imageCreateFromGif($sourcefile);
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break;
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case 2: // JPG
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$srcImage = imageCreateFromJpeg($sourcefile);
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break;
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case 3: // PNG
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$srcImage = imageCreateFromPng($sourcefile);
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break;
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}
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$tempw = $fw;
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$temph = number_format((($oh*$fw)/$ow), 0);
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if($temph < $fh) {
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$tempw = number_format((($ow*$fh)/$oh), 0);
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$temph = $fh;
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}
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// $tempImage = imageCreateTrueColor($tempw, $temph);
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// imageAntiAlias($tempImage, true);
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$tempImage = imageCreate($tempw, $temph);
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// imagecopyresampled($tempImage, $srcImage, 0, 0, 0, 0, $tempw, $temph, $ow, $oh);
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imagecopyresized($tempImage, $srcImage, 0, 0, 0, 0, $tempw, $temph, $ow, $oh);
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// Calculate offsets
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if($temph < $fh) {
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$offsety = number_format(($temph/2)-($fh/2), 0);
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$offsetx = 0;
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} else {
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$offsety = 0;
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$offsetx = number_format(($tempw/2)-($fw/2), 0);
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}
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// $destImage = imageCreateTrueColor($fw, $fh);
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// imagecopyresampled($destImage, $tempImage, 0, 0, $offsetx, $offsety, $fw, $fh, $fw, $fh);
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$destImage = imageCreate($fw, $fh);
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imagecopyresized($destImage, $tempImage, 0, 0, $offsetx, $offsety, $fw, $fh, $fw, $fh);
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return $destImage; //imageJpeg($destImage, $destfile, $jpegquality);
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}
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?>
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