alertcanvas.java

基于j2me的高等代数计算工具

package edu.neu.aatk.canvas;

import java.io.IOException;

import javax.microedition.lcdui.Font;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

import edu.neu.aatk.AATK;

public class AlertCanvas extends AATKCanvas {
	private Image img = null;
	private String note = null;
	private String info = null;

	public AlertCanvas(String title, AATK aatk, 
			Image img, String note, String info) {
		super(title, aatk);
		this.img = img;
		this.note = note;
		this.info = info;
	}
	
	protected void paint(Graphics g) {
		super.paint(g);
		paintLeftCommand(g, "返回");
		
		try {
			paintImage(g, img);
		}
		catch(Exception e) {
			e.printStackTrace();
		}
		paintNote(g, note);
		paintInfo(g, info);
	}
	
	private void paintImage(Graphics g, Image img) {
		g.drawImage(img, 10, 40, Graphics.TOP | Graphics.LEFT);
	}
	
	private void paintNote(Graphics g, String note) {
		Font font = Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_BOLD, 
				Font.SIZE_LARGE);
		g.setFont(font);
		g.setColor(0, 0, 0);
		g.drawString(note, 80, 65, Graphics.TOP | Graphics.LEFT);
	}
	
	private void paintInfo(Graphics g, String info) {
		Font font = Font.getFont(Font.FACE_PROPORTIONAL, Font.STYLE_PLAIN, 
				Font.SIZE_LARGE);
		g.setFont(font);
		g.setColor(0, 0, 0);
		g.drawString(info, 20, 140, Graphics.TOP | Graphics.LEFT);
	}

}