Full screen:MultiBuffer Test

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/**
 * This test takes a number up to 13 as an argument (assumes 2 by default) and
 * creates a multiple buffer strategy with the number of buffers given. This
 * application enters full-screen mode, if available, and flips back and forth
 * between each buffer (each signified by a different color).
 */

import java.awt.Color;
import java.awt.DisplayMode;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;
import java.awt.image.BufferStrategy;

public class MultiBufferTest {

  private static Color[] COLORS = new Color[] { Color.red, Color.blue,
      Color.green, Color.white, Color.black, Color.yellow, Color.gray,
      Color.cyan, Color.pink, Color.lightGray, Color.magenta,
      Color.orange, Color.darkGray };

  private static DisplayMode[] BEST_DISPLAY_MODES = new DisplayMode[] {
      new DisplayMode(640, 480, 32, 0), new DisplayMode(640, 480, 16, 0),
      new DisplayMode(640, 480, 8, 0) };

  Frame mainFrame;

  public MultiBufferTest(int numBuffers, GraphicsDevice device) {
    try {
      GraphicsConfiguration gc = device.getDefaultConfiguration();
      mainFrame = new Frame(gc);
      mainFrame.setUndecorated(true);
      mainFrame.setIgnoreRepaint(true);
      device.setFullScreenWindow(mainFrame);
      if (device.isDisplayChangeSupported()) {
        chooseBestDisplayMode(device);
      }
      Rectangle bounds = mainFrame.getBounds();
      mainFrame.createBufferStrategy(numBuffers);
      BufferStrategy bufferStrategy = mainFrame.getBufferStrategy();
      for (float lag = 2000.0f; lag > 0.00000006f; lag = lag / 1.33f) {
        for (int i = 0; i < numBuffers; i++) {
          Graphics g = bufferStrategy.getDrawGraphics();
          if (!bufferStrategy.contentsLost()) {
            g.setColor(COLORS[i]);
            g.fillRect(0, 0, bounds.width, bounds.height);
            bufferStrategy.show();
            g.dispose();
          }
          try {
            Thread.sleep((int) lag);
          } catch (InterruptedException e) {
          }
        }
      }
    } catch (Exception e) {
      e.printStackTrace();
    } finally {
      device.setFullScreenWindow(null);
    }
  }

  private static DisplayMode getBestDisplayMode(GraphicsDevice device) {
    for (int x = 0; x < BEST_DISPLAY_MODES.length; x++) {
      DisplayMode[] modes = device.getDisplayModes();
      for (int i = 0; i < modes.length; i++) {
        if (modes[i].getWidth() == BEST_DISPLAY_MODES[x].getWidth()
            && modes[i].getHeight() == BEST_DISPLAY_MODES[x]
                .getHeight()
            && modes[i].getBitDepth() == BEST_DISPLAY_MODES[x]
                .getBitDepth()) {
          return BEST_DISPLAY_MODES[x];
        }
      }
    }
    return null;
  }

  public static void chooseBestDisplayMode(GraphicsDevice device) {
    DisplayMode best = getBestDisplayMode(device);
    if (best != null) {
      device.setDisplayMode(best);
    }
  }

  public static void main(String[] args) {
    try {
      int numBuffers = 2;
      if (args != null && args.length > 0) {
        numBuffers = Integer.parseInt(args[0]);
        if (numBuffers < 2 || numBuffers > COLORS.length) {
          System.err.println("Must specify between 2 and "
              + COLORS.length + " buffers");
          System.exit(1);
        }
      }
      GraphicsEnvironment env = GraphicsEnvironment
          .getLocalGraphicsEnvironment();
      GraphicsDevice device = env.getDefaultScreenDevice();
      MultiBufferTest test = new MultiBufferTest(numBuffers, device);
    } catch (Exception e) {
      e.printStackTrace();
    }
    System.exit(0);
  }
}
Related examples in the same category

1.	Full screen test
2.	Full screen: Display Mode Test
3.	Full screen: Capabilities Test
Full screen:MultiBuffer Test : Full Screen « 2D Graphics GUI « Java

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