package framework.RWT;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.io.File;

/**
 * 画像です。
 * @author Wataru
 *
 */
public class RWTImage extends RWTWidget {
	protected float relativeX = 0.0f;
	protected float relativeY = 0.0f;
	protected float relativeWidth = 0.0f;
	protected float relativeHeight = 0.0f;
	protected int x = 0;
	protected int y = 0;
	protected int width = 0;
	protected int height = 0;	

	private BufferedImage image = null;
	private ImageObserver observer;
	
	private int imageWidth = 0;
	private int imageHeight = 0;
	
	public RWTImage(String fileName) {
		try {
			image = ImageIO.read(new File(fileName));
			setSize(image.getWidth(), image.getHeight());
		} catch (Exception e) {
			e.printStackTrace();
			image = null;
		}
	}
	
	/**
	 * 画像の相対位置を指定する。
	 * @param x x座標値(0.0f〜1.0f)
	 * @param y y座標値(0.0f〜1.0f)
	 */
	public void setRelativePosition(float x, float y) {
		relativeX = x;
		relativeY = y;
	}
	
	/**
	 * 画像を設定します。
	 * @param fileName
	 */
	public void setImage(String fileName) {
		try {
			image = ImageIO.read(new File(fileName));
			setSize(image.getWidth(), image.getHeight());
		} catch (Exception e) {
			e.printStackTrace();
			image = null;
		}
	}
	
	/**
	 * 画像のサイズを設定します。
	 * 相対値ではありません。
	 * @param x
	 * @param y
	 */
	public void setSize(int x, int y) {
		imageWidth = image.getWidth();
		imageHeight = image.getHeight();
	}
	
	public void setObserver(ImageObserver o) {
		observer = o;
	}
	
	@Override
	public void adjust(Component parent) {
		int sx = parent.getWidth();
		int sy = parent.getHeight();
		x = (int) (sx * relativeX);
		y = (int) (sy * relativeY);
	}	
	
	@Override
	public void paint(Graphics g) {
		g.drawImage(image, x, y, imageWidth, imageHeight, observer);
	}
}