85 lines
2.1 KiB
PHP
85 lines
2.1 KiB
PHP
<?php
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namespace Intervention\Image\Gd;
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class Driver extends \Intervention\Image\AbstractDriver
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{
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/**
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* Creates new instance of driver
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*
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* @param Decoder $decoder
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* @param Encoder $encoder
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*/
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public function __construct(Decoder $decoder = null, Encoder $encoder = null)
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{
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if ( ! $this->coreAvailable()) {
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throw new \Intervention\Image\Exception\NotSupportedException(
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"GD Library extension not available with this PHP installation."
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);
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}
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$this->decoder = $decoder ? $decoder : new Decoder;
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$this->encoder = $encoder ? $encoder : new Encoder;
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}
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/**
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* Creates new image instance
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*
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* @param integer $width
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* @param integer $height
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* @param mixed $background
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* @return \Intervention\Image\Image
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*/
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public function newImage($width, $height, $background = null)
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{
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// create empty resource
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$core = imagecreatetruecolor($width, $height);
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$image = new \Intervention\Image\Image(new static, $core);
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// set background color
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$background = new Color($background);
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imagefill($image->getCore(), 0, 0, $background->getInt());
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return $image;
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}
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/**
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* Reads given string into color object
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*
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* @param string $value
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* @return AbstractColor
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*/
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public function parseColor($value)
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{
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return new Color($value);
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}
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/**
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* Checks if core module installation is available
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*
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* @return boolean
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*/
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protected function coreAvailable()
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{
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return (extension_loaded('gd') && function_exists('gd_info'));
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}
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/**
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* Returns clone of given core
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*
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* @return mixed
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*/
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public function cloneCore($core)
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{
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$width = imagesx($core);
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$height = imagesy($core);
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$clone = imagecreatetruecolor($width, $height);
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imagealphablending($clone, false);
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imagesavealpha($clone, true);
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imagecopy($clone, $core, 0, 0, 0, 0, $width, $height);
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return $clone;
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}
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}
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