mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-08-29 22:16:01 +02:00
278 lines
6.0 KiB
PHP
278 lines
6.0 KiB
PHP
<?php
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/**
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* @package framework
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* @subpackage filesystem
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*/
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if(class_exists('Imagick')) {
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class ImagickBackend extends Imagick implements Image_Backend {
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/**
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* @var int
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*/
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protected static $default_quality = 75;
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/**
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* __construct
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*
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* @param string $filename = null
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* @return void
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*/
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public function __construct($filename = null) {
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if(is_string($filename)) {
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parent::__construct($filename);
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} else {
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self::setImageCompressionQuality(self::$default_quality);
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}
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}
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/**
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* writeTo
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*
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* @param string $path
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* @return void
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*/
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public function writeTo($path) {
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Filesystem::makeFolder(dirname($path));
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if(is_dir(dirname($path)))
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self::writeImage($path);
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}
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/**
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* set_default_quality
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*
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* @static
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* @param int $quality
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* @return void
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*/
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public static function set_default_quality($quality) {
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self::$default_quality = $quality;
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}
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/**
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* setQuality
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*
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* @param int $quality
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* @return void
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*/
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public function setQuality($quality) {
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self::setImageCompressionQuality($quality);
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}
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/**
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* setImageResource
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*
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* Set the backend-specific resource handling the manipulations. Replaces Image::setGD()
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*
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* @param mixed $resource
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* @return void
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*/
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public function setImageResource($resource) {
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trigger_error("Imagick::setImageResource is not supported", E_USER_ERROR);
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}
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/**
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* getImageResource
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*
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* Get the backend-specific resource handling the manipulations. Replaces Image::getGD()
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*
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* @return mixed
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*/
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public function getImageResource() {
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return $this;
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}
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/**
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* hasImageResource
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*
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* @return boolean
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*/
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public function hasImageResource() {
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return true; // $this is the resource, necessarily
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}
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/**
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* resize
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*
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* @param int $width
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* @param int $height
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* @return Image_Backend
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*/
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public function resize($width, $height) {
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if(!$this->valid()) return;
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$width = round($width);
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$height = round($height);
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$geometry = $this->getImageGeometry();
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// Check that a resize is actually necessary.
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if ($width == $geometry["width"] && $height == $geometry["height"]) {
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return $this;
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}
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if(!$width && !$height) user_error("No dimensions given", E_USER_ERROR);
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if(!$width) user_error("Width not given", E_USER_ERROR);
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if(!$height) user_error("Height not given", E_USER_ERROR);
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$new = clone $this;
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$new->resizeImage($width, $height, self::FILTER_LANCZOS, 1);
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return $new;
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}
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/**
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* resizeRatio
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*
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* @param int $width
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* @param int $height
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* @return Image_Backend
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*/
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public function resizeRatio($maxWidth, $maxHeight, $useAsMinimum = false) {
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if(!$this->valid()) return;
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$geometry = $this->getImageGeometry();
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$widthRatio = $maxWidth / $geometry["width"];
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$heightRatio = $maxHeight / $geometry["height"];
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if( $widthRatio < $heightRatio )
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return $useAsMinimum ? $this->resizeByHeight( $maxHeight ) : $this->resizeByWidth( $maxWidth );
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else
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return $useAsMinimum ? $this->resizeByWidth( $maxWidth ) : $this->resizeByHeight( $maxHeight );
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}
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/**
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* resizeByWidth
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*
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* @param int $width
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* @return Image_Backend
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*/
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public function resizeByWidth($width) {
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if(!$this->valid()) return;
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$geometry = $this->getImageGeometry();
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$heightScale = $width / $geometry["width"];
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return $this->resize( $width, $heightScale * $geometry["height"] );
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}
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/**
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* resizeByHeight
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*
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* @param int $height
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* @return Image_Backend
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*/
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public function resizeByHeight($height) {
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if(!$this->valid()) return;
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$geometry = $this->getImageGeometry();
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$scale = $height / $geometry["height"];
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return $this->resize( $scale * $geometry["width"], $height );
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}
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/**
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* paddedResize
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*
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* @param int $width
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* @param int $height
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* @return Image_Backend
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*/
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public function paddedResize($width, $height, $backgroundColor = "FFFFFF") {
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if(!$this->valid()) return;
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$width = round($width);
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$height = round($height);
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$geometry = $this->getImageGeometry();
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// Check that a resize is actually necessary.
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if ($width == $geometry["width"] && $height == $geometry["height"]) {
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return $this;
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}
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$new = clone $this;
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$new->setBackgroundColor($backgroundColor);
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$destAR = $width / $height;
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if ($geometry["width"] > 0 && $geometry["height"] > 0) {
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// We can't divide by zero theres something wrong.
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$srcAR = $geometry["width"] / $geometry["height"];
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// Destination narrower than the source
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if($destAR > $srcAR) {
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$destY = 0;
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$destHeight = $height;
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$destWidth = round( $height * $srcAR );
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$destX = round( ($width - $destWidth) / 2 );
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// Destination shorter than the source
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} else {
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$destX = 0;
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$destWidth = $width;
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$destHeight = round( $width / $srcAR );
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$destY = round( ($height - $destHeight) / 2 );
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}
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$new->extentImage($width, $height, $destX, $destY);
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}
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return $new;
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}
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/**
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* croppedResize
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*
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* @param int $width
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* @param int $height
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* @return Image_Backend
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*/
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public function croppedResize($width, $height) {
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if(!$this->valid()) return;
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$width = round($width);
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$height = round($height);
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$geometry = $this->getImageGeometry();
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// Check that a resize is actually necessary.
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if ($width == $geometry["width"] && $height == $geometry["height"]) {
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return $this;
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}
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$new = clone $this;
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$new->setBackgroundColor($backgroundColor);
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$destAR = $width / $height;
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if ($geometry["width"] > 0 && $geometry["height"] > 0) {
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// We can't divide by zero theres something wrong.
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$srcAR = $this->width / $this->height;
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// Destination narrower than the source
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if($destAR < $srcAR) {
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$srcY = 0;
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$srcHeight = $this->height;
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$srcWidth = round( $this->height * $destAR );
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$srcX = round( ($this->width - $srcWidth) / 2 );
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// Destination shorter than the source
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} else {
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$srcX = 0;
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$srcWidth = $this->width;
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$srcHeight = round( $this->width / $destAR );
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$srcY = round( ($this->height - $srcHeight) / 2 );
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}
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$new->extentImage($width, $height, $destX, $destY);
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}
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return $new;
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}
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}
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} |