Draw Clip Area Using Canvas

This Example is going to draw a clip with SOLID line. In this picture only solid line show the clipping area. To draw a solid line, we have used SOLID keyword as given below:

and to draw the dotted line we are using DOTTED keyword, as given below:

Methods, that are used in our example code..

• setColor()
• fillRect()
• getWidth()
• getHeight()
• g.drawLine()
• g.setClip()

Source Code of ClipExample.java

 

import javax.microedition.midlet.*; import javax.microedition.lcdui.*; public class ClipExample extends MIDlet{   private Display display;      public void startApp(){     display = Display.getDisplay(this);     display.setCurrent (new ClipCanvas());    }   public void pauseApp(){}   public void destroyApp (boolean unconditional){}   public void commandAction(){} } class ClipCanvas extends Canvas{   public void paint(Graphics g){     g.setColor(255, 0, 0);     g.fillRect(0, 0, getWidth(), getHeight());     int map = Math.min(getWidth(), getHeight());         g.setColor(0, 0, 255);     g.setStrokeStyle(Graphics.DOTTED);     g.drawLine(0, 0, map, map);     g.setClip(map/4, map/4, map/2, map/2);     g.setStrokeStyle(Graphics.SOLID);     g.drawLine(0, 0, map, map);   } }

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