Javada mouse event

[dede]

main

Kod: (Tümünü Seç)

import javax.swing.JFrame;

   public class main
   {
      public static void main( String args[] )
      {
         MouseTrackerFrame mouseTrackerFrame = new MouseTrackerFrame();
        mouseTrackerFrame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
        mouseTrackerFrame.setSize( 300, 100 ); // set frame size
        mouseTrackerFrame.setVisible( true ); // display frame
     } // end main
  } // end class MouseTracker

MouseTrackerFrame

Kod: (Tümünü Seç)

import java.awt.Color;
   import java.awt.BorderLayout;
   import java.awt.event.MouseListener;
   import java.awt.event.MouseMotionListener;
   import java.awt.event.MouseEvent;
   import javax.swing.JFrame;
   import javax.swing.JLabel;
  import javax.swing.JPanel;

  public class MouseTrackerFrame extends JFrame
  {
     private JPanel mousePanel; // panel in which mouse events will occur
     private JLabel statusBar; // label that displays event information

     // MouseTrackerFrame constructor sets up GUI and
     // registers mouse event handlers
     public MouseTrackerFrame()
     {
        super( "Demonstrating Mouse Events" );

        mousePanel = new JPanel(); // create panel                      
        mousePanel.setBackground( Color.WHITE ); // set background color
        add( mousePanel, BorderLayout.CENTER ); // add panel to JFrame  

        statusBar = new JLabel( "Mouse outside JPanel" );          
        add( statusBar, BorderLayout.SOUTH ); // add label to JFrame

        // create and register listener for mouse and mouse motion events
        MouseHandler handler = new MouseHandler();                      
        mousePanel.addMouseListener( handler );                          
        mousePanel.addMouseMotionListener( handler );                    
     } // end MouseTrackerFrame constructor

     private class MouseHandler implements MouseListener,
        MouseMotionListener                              
     {
        // MouseListener event handlers
        // handle event when mouse released immediately after press
        public void mouseClicked( MouseEvent event )
        {
           statusBar.setText( String.format( "Clicked at [%d, %d]",
              event.getX(), event.getY() ) );
        } // end method mouseClicked

        // handle event when mouse pressed
        public void mousePressed( MouseEvent event )
        {
           statusBar.setText( String.format( "Pressed at [%d, %d]",
              event.getX(), event.getY() ) );
        } // end method mousePressed

        // handle event when mouse released after dragging
        public void mouseReleased( MouseEvent event )
        {
           statusBar.setText( String.format( "Released at [%d, %d]",
              event.getX(), event.getY() ) );
        } // end method mouseReleased

        // handle event when mouse enters area
        public void mouseEntered( MouseEvent event )
        {
           statusBar.setText( String.format( "Mouse entered at [%d, %d]",
              event.getX(), event.getY() ) );
           mousePanel.setBackground( Color.GREEN );
        } // end method mouseEntered

        // handle event when mouse exits area
        public void mouseExited( MouseEvent event )
        {
           statusBar.setText( "Mouse outside JPanel" );
           mousePanel.setBackground( Color.WHITE );
        } // end method mouseExited

        // MouseMotionListener event handlers
        // handle event when user drags mouse with button pressed
        public void mouseDragged( MouseEvent event )
        {
           statusBar.setText( String.format( "Dragged at [%d, %d]",
              event.getX(), event.getY() ) );
        } // end method mouseDragged

        // handle event when user moves mouse
        public void mouseMoved( MouseEvent event )
        {
           statusBar.setText( String.format( "Moved at [%d, %d]",
              event.getX(), event.getY() ) );
        } // end method mouseMoved
     } // end inner class MouseHandler
  } // end class MouseTrackerFrame