Re: Question about Full screen exclusive mode

From:

Soren <javaguy@tlen.pl>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 05 Dec 2006 18:35:30 +0100

Message-ID:

<el4eke$l8h$1@mx1.internetia.pl>

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OK I prepared such a version.
    - Test.java 66 lines
    - ScreenManager.java 73 lines

Hope it will work :)

------------------- Test.java --------------------------
public class Test
{
    ScreenManager screen = null;
    java.awt.DisplayMode oldMode = null;
    java.awt.DisplayMode testedMode = null;

    private Test()
    {
        screen = new ScreenManager();
    }

    public static void main( String[] args ) {
        Test.Run( 1024, 768, 32, 70);
        Test.Run( 1280, 960, 32, 70);
    }

    public static void Run( int width, int height, int bitDepth, int
refreshRate )
    {
        Test test = new Test();;
        test.testedMode = new java.awt.DisplayMode( width, height, bitDepth,
refreshRate );
        test.oldMode = test.screen.getCurrentDisplayMode();
        try
        {
            test.screen.setFullScreen( test.testedMode );
            test.drawLoop();
        }
        catch( Throwable t )
        {
            t.printStackTrace( System.err );
        }
        finally
        {
            test.screen.restoreScreen();
            test.screen.setFullScreen( test.oldMode );
            test.screen.restoreScreen();
        }
    }

    private void drawLoop() {
        long start = System.currentTimeMillis(),
             current = start;
        while( current < start + 10000 )
        {
            current = System.currentTimeMillis();
            java.awt.Graphics2D graphics = this.screen.getGraphics();
            draw( graphics );
            this.screen.update();

            try
            {
                Thread.sleep( 25 );
            }catch( InterruptedException ex) { /**/ }
        }
    }

    private void draw( java.awt.Graphics2D g ) {
        g.setPaint( java.awt.Color.blue );
        g.fillRect(0, 0, testedMode.getWidth(), testedMode.getHeight() );
        g.setPaint( java.awt.Color.white );
        g.setFont( new java.awt.Font("Dialog", java.awt.Font.BOLD, 20) );
        g.drawString( "Current resolution: "
+testedMode.getWidth()+"x"+testedMode.getHeight(), 50, 100);
        g.drawRect(0, 0, testedMode.getWidth()-1, testedMode.getHeight()-1 );
        g.draw( new java.awt.geom.Line2D.Double( 0,0,testedMode.getWidth()-1,
testedMode.getHeight()-1 ) );
        g.draw( new java.awt.geom.Line2D.Double( testedMode.getWidth()-1, 0,
0, testedMode.getHeight()-1 ) );
    }
}
------------------- Test.java --------------------------
.... and ...
------------------- ScreenManager.java --------------------------
package temp;

import java.awt.*;
import java.awt.image.BufferStrategy;

import javax.swing.JFrame;

public class ScreenManager {
    private GraphicsDevice device;
    private DisplayMode basicMode;

    public ScreenManager() {
    GraphicsEnvironment environment =
    GraphicsEnvironment.getLocalGraphicsEnvironment();
    device = environment.getDefaultScreenDevice();
    basicMode = device.getDisplayMode();
    }

    public DisplayMode getCurrentDisplayMode() {
    return device.getDisplayMode();
    }

    public void setFullScreen(DisplayMode displayMode) {
    JFrame frame = new JFrame();
    frame.setUndecorated(true);
    frame.setIgnoreRepaint(true);
    frame.setResizable(false);
    device.setFullScreenWindow(frame);

    if (displayMode != null &&
    device.isDisplayChangeSupported())
    {
    try {
    device.setDisplayMode(displayMode);
    }
    catch (IllegalArgumentException ex) { }
    }
    frame.createBufferStrategy(2);
    }

    public Window getFullScreenWindow() {
    return device.getFullScreenWindow();
    }

    public void restoreScreen() {
    device.setDisplayMode( basicMode );
    Window window = device.getFullScreenWindow();
    if (window != null) {
    window.dispose();
    }
    device.setFullScreenWindow( null );
    }

    public Graphics2D getGraphics() {
        Window window = device.getFullScreenWindow();
        if (window != null) {
        BufferStrategy strategy = window.getBufferStrategy();
        return (Graphics2D)strategy.getDrawGraphics();
        }

        else {
        return null;
        }
    }

    public void update() {
        Window window = device.getFullScreenWindow();
        if (window != null) {
            BufferStrategy strategy = window.getBufferStrategy();
            if (!strategy.contentsLost()) {
            strategy.show();
            }
        }
    }
}
------------------- ScreenManager.java --------------------------