66 lines
1.5 KiB
Java
66 lines
1.5 KiB
Java
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Scribble into a canvas
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package com.ack.gui.awt.simple;
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import java.awt.*;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseListener;
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import java.awt.event.MouseMotionListener;
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import java.awt.event.WindowAdapter;
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import java.awt.event.WindowEvent;
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public class ScribbleIntoACanvas extends Canvas implements MouseListener, MouseMotionListener {
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int old_mouse_x = 0;
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int old_mouse_y = 0;
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public void mousePressed( MouseEvent e ) {
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old_mouse_x = e.getX();
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old_mouse_y = e.getY();
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}
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public void mouseDragged( MouseEvent e ) {
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Graphics g = getGraphics();
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int x = e.getX(), y = e.getY();
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g.drawLine( old_mouse_x, old_mouse_y, x, y );
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old_mouse_x = x;
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old_mouse_y = y;
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}
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public void mouseReleased( MouseEvent e ) {
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;
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}
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public void mouseClicked( MouseEvent e ) {
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;
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}
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public void mouseEntered( MouseEvent e ) {
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;
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}
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public void mouseExited( MouseEvent e ) {
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;
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}
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public void mouseMoved( MouseEvent e ) {
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;
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}
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public static void main( String[] args ) {
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Frame myFrame = new Frame( "Scribble Into A Canvas Example" );
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ScribbleIntoACanvas myCanvas = new ScribbleIntoACanvas();
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myCanvas.addMouseListener( myCanvas );
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myCanvas.addMouseMotionListener( myCanvas );
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myFrame.add( myCanvas );
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myFrame.setSize( 600, 600 );
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myFrame.addWindowListener( new WindowAdapter() {
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public void windowClosing( WindowEvent we ) {
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System.exit( 0 );
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}
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} );
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myFrame.show();
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}
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}
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