Item.java

/**
* Copyright (c) 2012-2013 Nokia Corporation. All rights reserved.
* Nokia and Nokia Connecting People are registered trademarks of Nokia Corporation. 
* Oracle and Java are trademarks or registered trademarks of Oracle and/or its
* affiliates. Other product and company names mentioned herein may be trademarks
* or trade names of their respective owners. 
* See LICENSE.TXT for license information.
*/
package com.nokia.example.racer.views.components;

import com.nokia.example.racer.helpers.ImageLoader;
import com.nokia.example.racer.views.View;
import java.io.IOException;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

/*
 * This is an implementation for an image item. For clickable image item, see
 * Button
 */
public class Item {

    protected Image image;
    protected int x = 0;
    protected int y = 0;

    public Item() {
    }

    public Item(String imgUrl) {
        init(imgUrl);
    }

    /**
     * Initializes the image item. Loads its image.
     * 
     * @param imgUrl Path to the image
     */
    public final void init(String imgUrl) {
        ImageLoader loader = ImageLoader.getInstance();
        try {
            image = loader.loadImage(imgUrl);
        }
        catch (IOException io) {
            // Nothing to do here.
        }
    }

    public void render(Graphics g) {
        int anchor = Graphics.TOP | Graphics.LEFT;
        g.drawImage(image, x, y, anchor);
    }

    /**
     * Sets absolute position related to the screen
     * 
     * @param x x coordinate of the position
     * @param y y coordinate of the position
     */
    public void setPosition(int x, int y) {
        this.x = x;
        this.y = y;
    }

    /**
     * Sets relative position where 0.0 x/y is at left/top border and 1.0 is at
     * right/bottom border. The image anchor is centered.
     * 
     * @param x relative x of the position
     * @param y relative y of the position
     */
    public void setPositionRel(float x, float y) {
        this.x = (int) (View.screenWidth * x - image.getWidth() / 2);
        this.y = (int) (View.screenHeight * y - image.getHeight() / 2);
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public Image getImage() {
        return image;
    }
}