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<?php
namespace Rain\Tpl\Plugin;
require_once __DIR__ . '/../Plugin.php';
class ImageResize extends \Rain\Tpl\Plugin{
protected $hooks = array('beforeParse');
protected $quality = 80;
protected $crop = TRUE;
public function beforeParse(\ArrayAccess $context){
// set variables
$html = $context->code;
$template_basedir = $context->template_basedir;
$quality = $this->quality;
$auto_crop = $this->crop;
$conf = $context->conf;
$img_cache_dir = $template_basedir = $conf['cache_dir'];
// get the template base directory
$template_directory = $conf['base_url'] . $conf['tpl_dir'] . $template_basedir;
// reduce the path
$path = preg_replace('/\w+\/\.\.\//', '', $template_directory );
$exp = $sub = array();
$image_resized = false;
// match the images
if( preg_match_all( '/<img((?:\s*(src="(?<src>.*?)"))|(\s*(width="(?<width>.*?)"))|(\s*height="(?<height>.*?)")|(\s*resize="(?<resize>.*?)")|(\s*crop="(?<crop>.*?)"))*.*?>/', $html, $matches ) ){
for( $i=0,$n=count($matches[0]); $i<$n; $i++ ){
$tag = $matches[0][$i];
$src = $matches['src'][$i];
$w = $matches['width'][$i];
$h = $matches['height'][$i];
$resize = $matches['resize'][$i];
if( $auto_crop )
$crop = $matches['crop'][$i] == 'false' ? false : true;
else
$crop = $matches['crop'][$i] == 'true' ? true : false;
if( $w > 0 && $h > 0 && $resize != 'false' ){
echo $src;exit;
$new_tag = preg_replace( '/(.*?)src="(.*?)"(.*?)/', '$1src="<?php echo Rain\Tpl\Plugin\ImageResize::imgResize(\''.$src.'\', \''.$img_cache_dir.'\', \''.$w.'\', \''.$h.'\', \''.$quality.'\', \''.$crop.'\' ); ?>"$3', $tag );
$html = str_replace( $tag, $new_tag, $html );
$image_resized = true;
}
}
if( $image_resized )
$html = '<?php require_once(__FILE__); ?>' . $html;
}
$context->code = $html;
}
public function setQuality($quality) {
$this->quality = (int) $quality;
return $this;
}
public function setCrop($crop) {
$this->crop = (string) $crop;
return $this;
}
public static function imgResize( $src, $dest, $w, $h, $quality, $crop ){
$ext = substr(strrchr($src, '.'),1);
$dest = $dest . 'img.'. md5( $src . $crop . $quality ) . $w . 'x' . $h . '.' . $ext;
if( !file_exists( $dest ) )
static::rainImgResize( $src, $dest, $w, $h, $quality, $crop );
return $dest;
}
public static function rainImgResize($src, $dst, $width, $height, $quality, $crop=0){
if(!list($w, $h) = getimagesize($src)) return "Unsupported picture type!";
$type = strtolower(substr(strrchr($src,"."),1));
if($type == 'jpeg') $type = 'jpg';
switch($type){
case 'bmp': $img = imagecreatefromwbmp($src); break;
case 'gif': $img = imagecreatefromgif($src); break;
case 'jpg': $img = imagecreatefromjpeg($src); break;
case 'png': $img = imagecreatefrompng($src); break;
default : return "Unsupported picture type!";
}
// resize
if($crop){
if($w < $width or $h < $height) return "Picture is too small!";
$ratio = max($width/$w, $height/$h);
$h = $height / $ratio;
$x = ($w - $width / $ratio) / 2;
$w = $width / $ratio;
}
else{
if($w < $width and $h < $height) return "Picture is too small!";
$ratio = min($width/$w, $height/$h);
$width = $w * $ratio;
$height = $h * $ratio;
$x = 0;
}
$new = imagecreatetruecolor($width, $height);
// preserve transparency
if($type == "gif" or $type == "png"){
imagecolortransparent($new, imagecolorallocatealpha($new, 0, 0, 0, 127));
imagealphablending($new, false);
imagesavealpha($new, true);
}
imagecopyresampled($new, $img, 0, 0, $x, 0, $width, $height, $w, $h);
switch($type){
case 'bmp': imagewbmp($new, $dst, $quality); break;
case 'gif': imagegif($new, $dst, $quality); break;
case 'jpg': imagejpeg($new, $dst, $quality); break;
case 'png': imagepng($new, $dst, $quality); break;
}
return true;
}
}
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