mirror of https://github.com/BOINC/boinc.git
81 lines
2.6 KiB
PHP
81 lines
2.6 KiB
PHP
<?php
|
|
// This file is part of BOINC.
|
|
// http://boinc.berkeley.edu
|
|
// Copyright (C) 2008 University of California
|
|
//
|
|
// BOINC is free software; you can redistribute it and/or modify it
|
|
// under the terms of the GNU Lesser General Public License
|
|
// as published by the Free Software Foundation,
|
|
// either version 3 of the License, or (at your option) any later version.
|
|
//
|
|
// BOINC is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
// See the GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with BOINC. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
// Scale an image using the most powerful GD software available on the server
|
|
// while keeping aspect ratio the same
|
|
//
|
|
function intelligently_scale_image($sourcefile, $fw, $fh) {
|
|
$gd_info = gd_info();
|
|
$newGD = (strstr($gd_info["GD Version"], "2.0")!="");
|
|
|
|
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 = $fh;
|
|
}
|
|
|
|
if ($newGD){
|
|
$tempImage = imageCreateTrueColor($tempw, $temph);
|
|
// Seems not to work:
|
|
// imageAntiAlias($tempImage, true);
|
|
imagecopyresampled($tempImage, $srcImage, 0, 0, 0, 0, $tempw, $temph, $ow, $oh);
|
|
} else {
|
|
$tempImage = imageCreate($tempw, $temph);
|
|
imagecopyresized($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)-($fw/2), 0);
|
|
}
|
|
|
|
if ($newGD){
|
|
$destImage = imageCreateTrueColor($fw, $fh);
|
|
// Seems not to work:
|
|
// imageAntiAlias($tempImage, true);
|
|
imagecopyresampled($destImage, $tempImage, 0, 0, $offsetx, $offsety, $fw, $fh, $fw, $fh);
|
|
} else {
|
|
$destImage = imageCreate($fw, $fh);
|
|
imagecopyresized($destImage, $tempImage, 0, 0, $offsetx, $offsety, $fw, $fh, $fw, $fh);
|
|
}
|
|
|
|
return $destImage; //imageJpeg($destImage, $destfile, $jpegquality);
|
|
}
|
|
|
|
?>
|