/**
* Resize an image to the specified dimensions, placing the resulting
* image in the specified location. At least one of $newWidth or
* $newHeight must be specified.
*
* @param string $type Either 'thumb' or 'disp'
* @param integer $newWidth New width, in pixels
* @param integer $newHeight New height, in pixels
* @return string Blank if successful, error message otherwise.
*/
public static function ReSize($src, $dst, $newWidth = 0, $newHeight = 0)
{
global $_LGLIB_CONF;
// Calculate the new dimensions
$A = self::reDim($src, $newWidth, $newHeight);
if ($A === false) {
COM_errorLog("Invalid image {$src}");
return 'invalid image conversion';
}
list($sWidth, $sHeight, $dWidth, $dHeight) = $A;
// Get the mime type for the glFusion resizing functions
$mime_type = image_type_to_mime_type(exif_imagetype($src));
// Returns an array, with [0] either true/false and [1]
// containing a message.
$result = array();
if (function_exists(_img_resizeImage)) {
$result = _img_resizeImage($src, $dst, $sHeight, $sWidth, $dHeight, $dWidth, $mime_type);
} else {
$result[0] = false;
}
if ($result[0] == true) {
return '';
} else {
COM_errorLog("Failed to convert {$src} ({$sHeight} x {$sWidth}) to {$dst} ({$dHeight} x {$dWidth})");
return 'invalid image conversion';
}
}
/**
* Takes an image file and resizes it
*
* @param string $srcImage Absolute path to the source image
* @param string $destImage Absolute path to the destination image
* @param string $dImageHeight Destination image height
* @param string $dImageWidth Destination image width
* @param string $mimeType Source image mime type, if known
* @param bool $deleteSrc Should the source image be deleted after resizing
*
* @return array Returns $rc and $msg. $msg will be set if there was an error
*
* Note: $srcImage and $destImage can be the same location in which case the
* original image will be resized
*/
function IMG_resizeImage($srcImage, $destImage, $dImageHeight, $dImageWidth, $mimeType = '', $deleteSrc = 0)
{
global $_CONF;
$JpegQuality = 100;
if ($dImageHeight == 0) {
$dImageHeight = 200;
}
if ($dImageWidth == 0) {
$dImageWidth = 200;
}
$imgsize = @getimagesize("{$srcImage}");
$imgwidth = $imgsize[0];
$imgheight = $imgsize[1];
if ($imgwidth == 0 || $imgheight == 0) {
$imgwidth = $dImageWidth;
$imgheight = $dImageHeight;
}
if ($mimeType == '') {
$metaData = IMG_getMediaMetaData($srcImage);
$mimeType = $metaData['mime_type'];
}
if ($mimeType == 'image/x-targa' || $mimeType == 'image/tga') {
$fp = @fopen($srcImage, 'rb');
if ($fp == false) {
return array(false, 'Failed to open source TGA image.');
}
$data = fread($fp, filesize($srcImage));
fclose($fp);
$imgwidth = base_convert(bin2hex(strrev(substr($data, 12, 2))), 16, 10);
$imgheight = base_convert(bin2hex(strrev(substr($data, 12, 2))), 16, 10);
COM_errorLog("TGA resolution: height: " . $imgheight . " width: " . $imgwidth);
}
if ($imgwidth > $imgheight) {
$ratio = $imgwidth / $dImageWidth;
$newwidth = $dImageWidth;
$newheight = round($imgheight / $ratio);
} else {
$ratio = $imgheight / $dImageHeight;
$newheight = $dImageHeight;
$newwidth = round($imgwidth / $ratio);
}
// check to see if srcImage is smaller than desired target,
// if smaller, do not upsize, simply copy the src to the dest.
if ($newheight > $imgheight && $newwidth > $imgwidth) {
if ($srcImage != $destImage) {
$rc = copy($srcImage, $destImage);
COM_errorLog("IMG_resizeImage: Original (" . $srcImage . ") is smaller than target, original copied to target image (" . $destImage . ".");
}
return array(true, 'Original is smaller than target, original copied to target image.');
}
list($rc, $msg) = _img_resizeImage($srcImage, $destImage, $imgheight, $imgwidth, $newheight, $newwidth, $mimeType);
if ($rc == false) {
return array($rc, $msg);
}
return array(true, 'Image successfully resized');
}