Better API for handling MonitorAwareRectangle

This commit contributes to providing better interfaces and APIs for
handling MontiorAware Rectangles with Abstraction.

contributes to
#62 and
#128

Author: amartya4256

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/MonitorAwareRectangle.java

@@ -24,7 +24,7 @@
  * @since 3.129
  * @noreference This class is not intended to be referenced by clients
  */
-public final class MonitorAwareRectangle extends Rectangle {
+public final class MonitorAwareRectangle extends Rectangle implements Cloneable {
 
 	private static final long serialVersionUID = 5041911840525116925L;
 
@@ -61,4 +61,9 @@ public int hashCode() {
 		return super.hashCode();
 	}
 
+	@Override
+    public MonitorAwareRectangle clone() {
+        return new MonitorAwareRectangle(x, y, width, height, monitor);
+    }
+
 }

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/Rectangle.java

@@ -45,7 +45,7 @@
  * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
  */
 
-public sealed class Rectangle implements Serializable permits MonitorAwareRectangle {
+public sealed class Rectangle implements Serializable, Cloneable permits MonitorAwareRectangle {
 
 	/**
 	 * the x coordinate of the rectangle
@@ -356,4 +356,39 @@ public Rectangle union (Rectangle rect) {
 	return new Rectangle (left, top, right - left, bottom - top);
 }
 
+/**
+ * Creates a new {@code Rectangle} using the specified top-left point and dimensions.
+ * <p>
+ * If the provided {@code Point} instance carries additional contextual information,
+ * an extended {@code Rectangle} type may be returned to preserve that context.
+ * Otherwise, a standard {@code Rectangle} is returned.
+ * </p>
+ *
+ * @param topLeft the top-left corner of the rectangle
+ * @param width the width of the rectangle
+ * @param height the height of the rectangle
+ * @return a new {@code Rectangle} instance appropriate for the given point and dimensions
+ * @since 3.131
+ */
+public static Rectangle of(Point topLeft, int width, int height) {
+    if (topLeft instanceof MonitorAwarePoint monitorAwareTopLeft) {
+        return new MonitorAwareRectangle(topLeft.x, topLeft.y, width, height, monitorAwareTopLeft.getMonitor());
+    }
+    return new Rectangle(topLeft.x, topLeft.y, width, height);
+}
+
+/**
+ * Creates and returns a copy of this {@code Rectangle}.
+ * <p>
+ * This method performs a shallow copy of the rectangle's fields: {@code x}, {@code y}, {@code width}, and {@code height}.
+ * It does not copy any subclass-specific fields, so subclasses should override this method if additional fields exist.
+ * </p>
+ *
+ * @return a new {@code Rectangle} instance with the same position and size as this one
+ * @since 3.131
+ */
+@Override
+public Rectangle clone() {
+    return new Rectangle(x, y, width, height);
+}
 }