Added pause feature.

src/nbradham/mouseUtil/MCUtil.java

@@ -14,35 +14,43 @@
 
 import com.github.kwhat.jnativehook.GlobalScreen;
 import com.github.kwhat.jnativehook.NativeHookException;
+import com.github.kwhat.jnativehook.keyboard.NativeKeyEvent;
+import com.github.kwhat.jnativehook.keyboard.NativeKeyListener;
 import com.github.kwhat.jnativehook.mouse.NativeMouseEvent;
 import com.github.kwhat.jnativehook.mouse.NativeMouseMotionListener;
 
-public final class MCUtil {
+/**
+ * The entire utility.
+ * 
+ * @author Nickolas Bradham
+ *
+ */
+public final class MCUtil implements NativeKeyListener, NativeMouseMotionListener {
 
-	public static final void main(String[] args) throws AWTException, NativeHookException {
-		Robot r = new Robot();
+	private final JLabel coordsLabel = new JLabel("P to Pause   Coordinates: Waiting for Movement..."),
+			hueLabel = new JLabel("Hue: Waiting...");
+	JFrame frame = new JFrame("Mouse and Color Util");
+	private final Robot r;
+	private long lastUpdate = 0;
+	private boolean unpaused = true;
 
-		GlobalScreen.registerNativeHook();
+	/**
+	 * Constructs a new MCUtil
+	 * 
+	 * @throws AWTException Thrown by {@link Robot#Robot()}.
+	 */
+	private MCUtil() throws AWTException {
+		r = new Robot();
+	}
 
+	/**
+	 * Builds and shows the GUI. Registers listeners.
+	 * 
+	 * @throws NativeHookException Thrown by
+	 *                             {@link GlobalScreen#registerNativeHook()}.
+	 */
+	private void start() throws NativeHookException {
 		SwingUtilities.invokeLater(() -> {
-
-			JFrame frame = new JFrame("Mouse and Color Util");
-			JLabel coordsLabel = new JLabel("Coordinates: Waiting for Movement..."),
-					hueLabel = new JLabel("Hue: Waiting...");
-
-			GlobalScreen.addNativeMouseMotionListener(new NativeMouseMotionListener() {
-				@Override
-				public void nativeMouseMoved(NativeMouseEvent nativeEvent) {
-
-					Point p = MouseInfo.getPointerInfo().getLocation();
-					Color c = r.getPixelColor(p.x, p.y);
-
-					coordsLabel.setText(String.format("Coordinates: (%d, %d)", p.x, p.y));
-					hueLabel.setText(
-							String.format("Hue: %f", Color.RGBtoHSB(c.getRed(), c.getGreen(), c.getBlue(), null)[0]));
-				}
-			});
-
 			frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 			frame.setLayout(new FlowLayout());
 			frame.add(coordsLabel);
@@ -63,5 +71,39 @@ public void windowClosing(WindowEvent e) {
 
 			frame.setVisible(true);
 		});
+
+		GlobalScreen.registerNativeHook();
+		GlobalScreen.addNativeKeyListener(this);
+		GlobalScreen.addNativeMouseMotionListener(this);
+	}
+
+	@Override
+	public void nativeKeyPressed(NativeKeyEvent nativeEvent) {
+		if (nativeEvent.getKeyCode() == NativeKeyEvent.VC_P)
+			unpaused = !unpaused;
+	}
+
+	@Override
+	public void nativeMouseMoved(NativeMouseEvent nativeEvent) {
+		long time = System.currentTimeMillis();
+		if (unpaused && time - lastUpdate > 16 && frame.isVisible()) {
+			Point p = MouseInfo.getPointerInfo().getLocation();
+			Color c = r.getPixelColor(p.x, p.y);
+
+			coordsLabel.setText(String.format("P to Pause   Coordinates: (%d, %d)", p.x, p.y));
+			hueLabel.setText(String.format("Hue: %f", Color.RGBtoHSB(c.getRed(), c.getGreen(), c.getBlue(), null)[0]));
+			lastUpdate = time;
+		}
+	}
+
+	/**
+	 * Constructs and starts a new MCUtil instance.
+	 * 
+	 * @param args Ignored.
+	 * @throws AWTException        Thrown by {@link #MCUtil()}.
+	 * @throws NativeHookException Thrown by {@link #start()}.
+	 */
+	public static final void main(String[] args) throws AWTException, NativeHookException {
+		new MCUtil().start();
 	}
 }