public static function getThumbnailUrl($fullPath, $width, $height = 0, $dir = null)
{
$thumbnailPath = self::getThumbnailPath($fullPath, $width, $height, $dir);
$thumbnailUrl = XenForo_Application::$externalDataUrl . self::_getThumbnailRelativePath($fullPath, $width, $height, $dir);
if (file_exists($thumbnailPath) && filesize($thumbnailPath) > 0) {
return $thumbnailUrl;
}
$tempPath = self::_getTempPath($fullPath);
$imageInfo = self::getImageInfo($tempPath);
$image = null;
if (!empty($imageInfo['typeInt'])) {
$image = XenForo_Image_Abstract::createFromFile($tempPath, $imageInfo['typeInt']);
}
if (empty($image)) {
// could not open the image, create a new image
$longer = max($width, $height);
$image = XenForo_Image_Abstract::createImage($longer, $longer);
$imageInfo['typeInt'] = IMAGETYPE_PNG;
}
if ($width === '' && $height > 0) {
// stretch width
$targetHeight = $height;
$targetWidth = $targetHeight / $image->getHeight() * $image->getWidth();
$image->thumbnail($targetWidth, $targetHeight);
} elseif ($height === '' && $width > 0) {
// stretch height
$targetWidth = $width;
$targetHeight = $targetWidth / $image->getWidth() * $image->getHeight();
$image->thumbnail($targetWidth, $targetHeight);
} elseif ($width > 0 && $height > 0) {
// exact crop
$origRatio = $image->getWidth() / $image->getHeight();
$cropRatio = $width / $height;
if ($origRatio > $cropRatio) {
$thumbnailHeight = $height;
$thumbnailWidth = $height * $origRatio;
} else {
$thumbnailWidth = $width;
$thumbnailHeight = $width / $origRatio;
}
if ($thumbnailWidth <= $image->getWidth() && $thumbnailHeight <= $image->getHeight()) {
$image->thumbnail($thumbnailWidth, $thumbnailHeight);
$image->crop(0, 0, $width, $height);
} else {
// thumbnail requested is larger then the image size
if ($origRatio > $cropRatio) {
$image->crop(0, 0, $image->getHeight() * $cropRatio, $image->getHeight());
} else {
$image->crop(0, 0, $image->getWidth(), $image->getWidth() / $cropRatio);
}
}
} elseif ($width > 0) {
// square crop
$image->thumbnailFixedShorterSide($width);
$image->crop(0, 0, $width, $width);
}
// TODO: progressive jpeg
XenForo_Helper_File::createDirectory(dirname($thumbnailPath), true);
$outputPath = tempnam(XenForo_Helper_File::getTempDir(), __CLASS__);
/** @noinspection PhpParamsInspection */
$image->output($imageInfo['typeInt'], $outputPath);
XenForo_Helper_File::safeRename($outputPath, $thumbnailPath);
return $thumbnailUrl;
}
