iPhoneIconizer.php

<?php
/**
 * iPhoneのアイコンみたいな画像を作るよ
 *
 * @author riaf<riafweb@gmail.com>
 */
if(!class_exists('Imagick')){
    throw new Exception('Imagick required.');
    return -1;
}

class iPhoneIconizer
{
    private $image;
    
    public static function auto($filename, $output=null){
        $iphonizer = new iPhoneIconizer();
        return $iphonizer->set($filename)->crystal()->round()->output($output);
    }
    
    public function set($filename, $width=58, $height=58){
        $image = new Imagick($filename);
        $image->setImageMatte(true);
        $image->cropThumbnailImage($width, $height);
        $this->image = $image;
        return $this;
    }
    public function round($rounding=10, $edge=5){
        return ($edge !== false)? $this->_edgedRound($rounding, $edge): $this->_normalRound($rounding);
    }
    private function _normalRound($rounding){
        return $this;
    }
    private function _edgedRound($rounding, $edge){
        $w = $this->image->getImageWidth();
        $h = $this->image->getImageHeight();
        
        // outer
        $o = $this->image->clone();
        $o = $o->fxImage('p*1.3');
        $omask = new Imagick();
        $omask->newImage($w, $h, 'none');
        $omask_draw = new ImagickDraw();
        $omask_draw->setFillColor('#ffffff');
        $omask_draw->setStrokeColor('#ffffff');
        $omask_draw->setStrokeWidth($edge);
        $omask_draw->roundRectangle($edge, $edge, $w-$edge-1, $h-$edge-1, $rounding, $rounding);
        $omask->drawImage($omask_draw);
        // $omask_draw->destroy();
        $omask->compositeImage($o, Imagick::COMPOSITE_IN, 0, 0, Imagick::CHANNEL_ALL);
        
        // inner
        $i = $this->image->clone();
        $imask = new Imagick();
        $imask->newImage($w, $h, 'none');
        $imask_draw = new ImagickDraw();
        $imask_draw->setFillColor('#ffffff');
        $imask_draw->setStrokeWidth(0);
        $imask_draw->roundRectangle($edge, $edge, $w-$edge-1, $h-$edge-1, $rounding, $rounding);
        $imask->drawImage($imask_draw);
        // $imask_draw->destroy();
        $imask->compositeImage($i, Imagick::COMPOSITE_IN, 0, 0, Imagick::CHANNEL_ALL);
        
        // merge
        $omask->compositeImage($imask, Imagick::COMPOSITE_DEFAULT, 0, 0, Imagick::CHANNEL_ALL);
        $new = new Imagick();
        $new->newImage($w, $h, 'none');
        $new->compositeImage($omask, Imagick::COMPOSITE_DEFAULT, 0, 0, Imagick::CHANNEL_ALL);
        // $this->image->destroy();
        $this->image = $new;
        
        // $i->destroy();
        // $o->destroy();
        // $imask->destroy();
        // $omask->destroy();
        
        return $this;
    }
    public function crystal(){
        $mask = new Imagick();
        $mask->newImage($this->image->getImageWidth(), $this->image->getImageHeight(), 'none');
        $draw = new ImagickDraw();
        $draw->setFillColor('#ffffff');
        $draw->circle(
            $this->image->getImageWidth()/2,
            $this->image->getImageHeight()*-0.5,
            $this->image->getImageWidth(),
            $this->image->getImageHeight()*0.3
        );
        $mask->drawImage($draw);
        $mask->setImageOpacity(0.1);
        
        $this->image->compositeImage($mask, Imagick::COMPOSITE_DEFAULT, 0, 0, Imagick::CHANNEL_ALL);
        
        return $this;
    }
    public function output($filename=null){
        if(is_null($filename)){
            // display
        } else {
            $this->image->writeImage($filename);
        }
        return $this;
    }
    
    public function __destruct(){
        if(is_object($this->image)){
            // $this->image->destroy();
        }
    }
}