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<?php
/**
 * Simple image component.
 *
 * @author Lemmmy
 * @see Component
 */
class ComponentImage extends Component
{
    const IMG_DIRECTORY = 'img/';

    /**
     * The width of this image
     *
     * @var int
     */
    private $width;

    /**
     * The height of this image
     *
     * @var int
     */
    private $height;

    /**
     * The Imagick object of this image
     *
     * @var Imagick
     */
    private $image;

    /**
     * The composite to use for this image
     *
     * @var int
     */
    private $composite;

    /**
     * The filter to use for this image
     *
     * @var int
     */
    private $filter;

    /**
     * @param OsuSignature $signature The base signature
     * @param int $x The X position of this image
     * @param int $y The Y position of this image
     * @param string|Imagick $image The actual image location
     * @param int $composite The composite mode to use for this image
     * @param int $width The width of this image. -1 = default to image size
     * @param int $height The height of this image -1 = default to image size
     * @param int $filter The Imagick filter to use for the scaling
     */
    public function __construct(
        OsuSignature $signature,
        $x = 0,
        $y = 0,
        $image,
        $composite = Imagick::COMPOSITE_DEFAULT,
        $width = -1,
        $height = -1,
        $filter = Imagick::FILTER_CATROM) {

        parent::__construct($signature, $x, $y);

        if ($image instanceof Imagick) {
            $this->image = $image;
        } else {
            $this->image = new Imagick($image);
        }

        $this->width = $width;
        $this->height = $height;

        $this->composite = $composite;
        $this->filter = $filter;
    }

    public function getWidth() {
        return $this->width;
    }

    public function getHeight() {
        return $this->height;
    }

    public function draw(OsuSignature $signature) {
        parent::draw($signature);

        if ($this->width != -1 || $this->height != -1) {
            $this->image->resizeImage(
                $this->width == -1 ? $this->image->getImageWidth() : $this->width,
                $this->height == -1 ? $this->image->getImageHeight() : $this->height,
                1,
                $this->filter
            );
        }

        $signature->getCanvas()->compositeImage(
            $this->image,
            $this->composite,
            $this->x,
            $this->y
        );
    }
}