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