remove window decorations, reimplement graphics constants and render …

…test

src/TSpinTutor.java

@@ -1,59 +1,64 @@
 import java.awt.*;
-import javax.swing.*;
-import static java.awt.GraphicsDevice.WindowTranslucency.*;
+import java.util.Random;
+import java.awt.Color;
+import java.awt.Graphics;
+import javax.swing.JFrame;
+import javax.swing.JPanel;
 
 public class TSpinTutor extends JFrame {
-    public TSpinTutor() {
-        super("GradientTranslucentWindow");
-
+	//global random generator
+	static Random r = new Random();
+	//graphics constants
+	static int sw = 1920;
+	static int sh = 1080;
+	static int bSize = 36;
+	static int bSizePrev = 28;
+	static int bSizePrevFuture = 22;
+	static int gridLeft = 308;
+	static int gridRight = 632;
+	static int gridTop = 160;
+	static int gridBot = 844;
+	static int numRows = 20;
+	static int numCols = 10;
+	//timing vars
+	public static long time = 0;
+    public static int fps = 30;
+
+	TSpinTutor() {
+		//set the frame properties for a transparent, always on top overlay
+        setUndecorated(true);
+        setSize(sw, sh);
+        setLocation(0, 0);
+        setLayout(new BorderLayout());
+        setAlwaysOnTop(true);
         setBackground(new Color(0,0,0,0));
-        setSize(new Dimension(300,200));
-        setLocationRelativeTo(null);
-        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
-
-        Paint p = new Color(0,0,0,0);
-
-        JPanel panel = new JPanel() {
-            @Override
-            protected void paintComponent(Graphics g) {
-                if (g instanceof Graphics2D) {
-                    Graphics2D g2d = (Graphics2D)g;
-                    g2d.setPaint(p);
-                    g2d.fillRect(0, 0, getWidth(), getHeight());
-                }
-            }
-        };
-        setContentPane(panel);
-        setLayout(new GridBagLayout());
-        add(new JButton("I am a Button"));
-    }
-
-    public static void main(String[] args) {
-        // Determine what the GraphicsDevice can support.
-        GraphicsEnvironment ge = 
-            GraphicsEnvironment.getLocalGraphicsEnvironment();
-        GraphicsDevice gd = ge.getDefaultScreenDevice();
-        boolean isPerPixelTranslucencySupported = 
-            gd.isWindowTranslucencySupported(PERPIXEL_TRANSLUCENT);
-
-        //If translucent windows aren't supported, exit.
-        if (!isPerPixelTranslucencySupported) {
-            System.out.println(
-                "Per-pixel translucency is not supported");
-                System.exit(0);
+	}
+
+	public static class Panel extends JPanel {
+        public Panel() {
+            setBackground(new Color(0,0,0,0));
         }
 
-        JFrame.setDefaultLookAndFeelDecorated(true);
-
-        // Create the GUI on the event-dispatching thread
-        SwingUtilities.invokeLater(new Runnable() {
-            @Override
-            public void run() {
-                TSpinTutor gtw = new TSpinTutor();
-
-                // Display the window.
-                gtw.setVisible(true);
-            }
-        });
+        @Override
+        protected void paintComponent(Graphics g) {
+            super.paintComponent(g);
+            int x = gridLeft + bSize*r.nextInt(numCols);
+    		int y = gridTop + bSize*r.nextInt(numRows);
+    		g.setColor(Color.RED);
+    		g.fillRect(x,y,bSize,bSize);
+        }
     }
+
+	public static void main(String[] args) {
+        final TSpinTutor tutor = new TSpinTutor();   
+        Panel panel = new Panel();
+        tutor.add(panel);
+        tutor.setVisible(true);
+        while(true) {
+        	time = System.nanoTime();
+            tutor.repaint();
+            time = System.nanoTime() - time;
+            try {Thread.sleep( (1000/fps) - (time/1000000) );} catch (Exception e){}
+        }
+    }    
 }