Javada mouse ile şekil çizme

[dede]

main

Kod: (Tümünü Seç)

import java.awt.BorderLayout;
   import javax.swing.JFrame;
   import javax.swing.JLabel;

   public class main
   {
      public static void main( String args[] )
     {
        // create JFrame
        JFrame application = new JFrame( "A simple paint program" );

        PaintPanel paintPanel = new PaintPanel(); // create paint panel
        application.add( paintPanel, BorderLayout.CENTER ); // in center

        // create a label and place it in SOUTH of BorderLayout
        application.add( new JLabel( "Drag the mouse to draw" ),
           BorderLayout.SOUTH );

        application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        application.setSize( 400, 200 ); // set frame size
        application.setVisible( true ); // display frame
     } // end main
  } // end class Painter

PaintPanel

Kod: (Tümünü Seç)

import java.awt.Point;
   import java.awt.Graphics;
   import java.awt.event.MouseEvent;
   import java.awt.event.MouseMotionAdapter;
   import javax.swing.JPanel;

   public class PaintPanel extends JPanel
  {
     private int pointCount = 0 ; // count number of points

     // array of 10000 java.awt.Point references
     private Point points[] = new Point[ 10000 ];

     // set up GUI and register mouse event handler
     public PaintPanel()
     {
        // handle frame mouse motion event
        addMouseMotionListener(

           new MouseMotionAdapter() // anonymous inner class
           {
              // store drag coordinates and repaint                      
              public void mouseDragged( MouseEvent event )                
              {                                                          
                 if ( pointCount < points.length )                        
                 {                                                        
                   points[ pointCount ] = event.getPoint(); // find point
                    pointCount++; // increment number of points in array  
                    repaint(); // repaint JFrame                          
                 } // end if                                              
              } // end method mouseDragged                                
           } // end anonymous inner class
        ); // end call to addMouseMotionListener
     } // end PaintPanel constructor

     // draw oval in a 4-by-4 bounding box at specified location on window
     public void paintComponent( Graphics g )
     {
        super.paintComponent( g ); // clears drawing area

        // draw all points in array
        for ( int i = 0 ; i < pointCount; i++ )
           g.fillOval( points[ i ].x, points[ i ].y, 4, 4 );
     } // end method paintComponent
  } // end class PaintPanel

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