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<?php |
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/* |
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* This file is part of the core-library package. |
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* |
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* (c) 2019 WEBEWEB |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace WBW\Library\Core\Utility; |
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/** |
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* Image helper. |
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* |
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* @author webeweb <https://github.com/webeweb/> |
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* @package WBW\Library\Core\Utility |
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*/ |
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class ImageHelper { |
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/** |
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* Create new dimensions. |
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* |
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* @param Image $image The image. |
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* @param int $maxWidth The maximum width. |
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* @param int $maxHeight The maximum height. |
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* @return int[] Returns the dimensions. |
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*/ |
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public static function newDimensions(Image $image, $maxWidth, $maxHeight) { |
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$image->init(); |
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if ($image->getWidth() < $maxWidth || $image->getHeight() < $maxHeight) { |
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return [$image->getWidth(), $image->getHeight()]; |
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} |
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if (null === $image->getOrientation()) { |
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$max = max($maxWidth, $maxHeight); |
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return [$max, $max]; |
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} |
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$ratio = $image->getWidth() / $image->getHeight(); |
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$width = $maxWidth; |
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$height = $maxHeight; |
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if (ImageInterface::ORIENTATION_HORIZONTAL === $image->getOrientation()) { |
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$height = intval($width / $ratio); |
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} else { |
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$width = intval($height * $ratio); |
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} |
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return [$width, $height]; |
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} |
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/** |
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* Create an input stream. |
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* |
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* @param Image $image The image. |
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* @return resource|null Returns the input stream in case of success, null otherwise. |
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*/ |
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public static function newInputStream(Image $image) { |
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$stream = null; |
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switch ($image->init()->getMimeType()) { |
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case ImageInterface::MIME_TYPE_JPEG: |
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$stream = imagecreatefromjpeg($image->getPathname()); |
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break; |
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case ImageInterface::MIME_TYPE_PNG: |
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$stream = imagecreatefrompng($image->getPathname()); |
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if (false !== $stream) { |
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imagealphablending($stream, true); |
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} |
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break; |
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} |
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return false !== $stream ? $stream : null; |
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} |
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/** |
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* Create an output stream. |
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* |
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* @param Image $image the image. |
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* @param int $width The width. |
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* @param int $height The height. |
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* @return resource|null Returns the output stream in case of success, null otherwise. |
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*/ |
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public static function newOutputStream(Image $image, $width, $height) { |
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$stream = imagecreatetruecolor($width, $height); |
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switch ($image->init()->getMimeType()) { |
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case ImageInterface::MIME_TYPE_PNG: |
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if (false !== $stream) { |
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imagealphablending($stream, false); |
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imagesavealpha($stream, true); |
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} |
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break; |
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} |
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return false !== $stream ? $stream : null; |
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} |
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/** |
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* Save an output stream. |
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* |
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* @param Image $image the image. |
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* @param resource $outputStream The output stream. |
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* @param string $pathname The pathname. |
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* @return bool Returns true in case of success, false otherwise. |
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*/ |
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public static function saveOutputStream(Image $image, $outputStream, $pathname) { |
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switch ($image->init()->getMimeType()) { |
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case ImageInterface::MIME_TYPE_JPEG: |
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return imagejpeg($outputStream, $pathname); |
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case ImageInterface::MIME_TYPE_PNG: |
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return imagepng($outputStream, $pathname); |
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} |
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return false; |
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} |
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} |
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webeweb /
core-library
