Initial Commit

src/META-INF/MANIFEST.MF

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+Manifest-Version: 1.0
+Main-Class: com.averycowan.screenprotector.Main
+

src/com/averycowan/screenprotector/LockMechanism.java

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+package com.averycowan.screenprotector;
+
+import java.awt.*;
+import java.awt.event.WindowEvent;
+
+public class LockMechanism {
+    public static void lock() {
+        // Run the applescript
+        String[] command = {
+                "osascript",
+                "-e",
+                "tell app \"System Events\" to key code 12 using {control down, command down}"
+        };
+        try {
+            System.err.println("Locking screen");
+            Process p = Runtime.getRuntime().exec(command);
+            p.getInputStream().transferTo(System.out);
+            p.getErrorStream().transferTo(System.err);
+            p.waitFor();
+            Thread.sleep(200);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static class Listener implements java.awt.event.AWTEventListener {
+        @Override
+        public void eventDispatched(AWTEvent event) {
+            if (event instanceof WindowEvent) {
+                WindowEvent windowEvent = (WindowEvent) event;
+                if (windowEvent.getID() == WindowEvent.WINDOW_ACTIVATED) {
+                    return;
+                }
+            }
+            System.out.println(event);
+            LockMechanism.lock();
+            System.exit(0);
+        }
+    }
+}

src/com/averycowan/screenprotector/Main.java

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+package com.averycowan.screenprotector;
+
+import javax.swing.JFrame;
+import java.awt.*;
+import java.awt.event.AWTEventListener;
+import java.util.concurrent.locks.Lock;
+
+public class Main {
+    public static final int WINDOW_SIZE = 2;
+
+    public static final int WAIT_TIME_MS = 1500;
+
+    public static void main(String[] args){
+        VerboseJFrame frame = new VerboseJFrame();
+        frame.setSize(WINDOW_SIZE, WINDOW_SIZE);
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setUndecorated(true);
+        Dimension screensize = Toolkit.getDefaultToolkit().getScreenSize();
+        frame.setSize(screensize);
+        frame.setVisible(true);
+        // Wait the specified amount of time before showing the frame
+        System.out.println("Waiting " + WAIT_TIME_MS + "ms before showing frame");
+        try {
+            Thread.sleep(WAIT_TIME_MS);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        // Set location to around the mouse
+        frame.setVisible(false);
+        frame.setSize(WINDOW_SIZE, WINDOW_SIZE);
+        Point mouseLocation = MouseInfo.getPointerInfo().getLocation();
+        Point windowLocation = new Point(mouseLocation.x - WINDOW_SIZE / 2, mouseLocation.y - WINDOW_SIZE / 2);
+        frame.setLocation(windowLocation);
+        System.out.println("Showing frame");
+        frame.setVisible(true);
+        Point windowLocationAfter = frame.getLocationOnScreen();
+        // Check that the window was correctly moved
+        if (!windowLocationAfter.equals(windowLocation)) {
+            System.err.println("Window was not moved to the correct location");
+            System.err.println("Expected: " + windowLocation);
+            System.err.println("Actual: " + windowLocationAfter);
+            System.err.println("Mouse location: " + mouseLocation);
+            System.exit(1);
+        }
+        // Sleep for 200ms to allow the window to be drawn
+        try {
+            Thread.sleep(200);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        System.out.println("Adding listener");
+        frame.addAWTEventListener(new LockMechanism.Listener());
+    }
+}

src/com/averycowan/screenprotector/VerboseJFrame.java

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+package com.averycowan.screenprotector;
+
+import javax.swing.JFrame;
+import java.awt.AWTEvent;
+import java.awt.event.AWTEventListener;
+import java.util.List;
+
+public class VerboseJFrame extends JFrame {
+    List<AWTEventListener> listeners = new java.util.ArrayList<AWTEventListener>();
+    public VerboseJFrame() {
+        super();
+        this.enableEvents(-1l);
+    }
+    @Override
+    public void processEvent(AWTEvent e) {
+        for (AWTEventListener listener : listeners) {
+            listener.eventDispatched(e);
+        }
+        super.processEvent(e);
+    }
+    public void addAWTEventListener(AWTEventListener listener) {
+        listeners.add(listener);
+    }
+}