fontcanvas.java

J2ME手机游戏开发技术详解,适合初学者阅读使用

package fontdemo;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class FontCanvas extends Canvas
{
	//private Graphics g;
	
	public FontCanvas()
        {
        	//g = this.getGraphics();
        	

        }
        public void paint(Graphics g)
        {
        	
        g.setColor(0x00ffffff);	
	g.fillRect(0, 0, this.getWidth(), this.getHeight());
	g.setColor(0x00000000);
	Font font = Font.getDefaultFont();
        g.setFont(font);
        int height = 50;
        g.drawString("Hi,J2ME",50,height,0);
        height += g.getFont().getHeight();
        g.setFont(Font.getFont(Font.FACE_MONOSPACE, 
			       Font.STYLE_PLAIN, 
			       Font.SIZE_LARGE));
	g.drawString("Hi,J2ME", 50, height, Graphics.TOP|Graphics.LEFT);
	height += g.getFont().getHeight();

	g.setFont(Font.getFont(Font.FACE_MONOSPACE, 
			       Font.STYLE_ITALIC, 
			       Font.SIZE_LARGE));
	g.drawString("Hi,J2ME", 50, height, Graphics.TOP|Graphics.LEFT);
	height += g.getFont().getHeight();

	g.setFont(Font.getFont(Font.FACE_PROPORTIONAL, 
			       Font.STYLE_BOLD, 
			       Font.SIZE_LARGE));
	g.drawString("Hi,J2ME", 50, height, Graphics.TOP|Graphics.LEFT);
	height += g.getFont().getHeight();
	
	g.setFont(Font.getFont(Font.FONT_STATIC_TEXT));
	g.drawString("Hi,J2ME", 50, height, Graphics.TOP|Graphics.LEFT);
	height += g.getFont().getHeight();
	
	g.setFont(Font.getFont(Font.FONT_INPUT_TEXT));
	g.drawString("Hi,J2ME", 50, height, Graphics.TOP|Graphics.LEFT);
	
	
	
/*	height += g.getFont().getHeight();

	g.setFont(Font.getFont(Font.FACE_MONOSPACE, 
			       Font.STYLE_BOLD|Font.STYLE_ITALIC, 
			       Font.SIZE_LARGE));
	g.drawString("Hi,J2ME", 0, height, Graphics.TOP|Graphics.LEFT);
	height += g.getFont().getHeight();
	
	g.setFont(Font.getFont(Font.FACE_PROPORTIONAL, 
			       Font.STYLE_UNDERLINED|Font.STYLE_ITALIC, 
			       Font.SIZE_LARGE));
	g.drawString("Hi,J2ME", 0, height, Graphics.TOP|Graphics.LEFT);*/
         
         
      /*  int height = font.getHeight();
        System.out.println(height);*/

       /* int width_H = font.charWidth('H');
        int width_i = font.charWidth('i');
        int width_dot = font.charWidth(',');	
        int width_J = font.charWidth('J');
        int width_2 = font.charWidth('2');
        int width_M = font.charWidth('M');
        int width_E = font.charWidth('E');
        
        System.out.println(width_H);
        System.out.println(width_i);
        System.out.println(width_dot);
        System.out.println(width_J);
        System.out.println(width_2);
        System.out.println(width_M);
        System.out.println(width_E);
        
        char[]ch = new char[]{'H','i',',','J','2','M','E'};
        int width_ch = font.charsWidth(ch,0,ch.length);
        System.out.println(width_ch);
                
        int width_str = font.stringWidth("Hi,J2ME");
        System.out.println(width_str);
        
        int width_substr = font.substringWidth("Hi,J2ME",0,7);
        System.out.println(width_substr);
        
        int baselinePosition = font.getBaselinePosition();
        System.out.println(baselinePosition);
*/

        }
}