Implement window callback methods

src/main/java/uk/co/caprica/vlcj/player/embedded/videosurface/VideoEngineVideoSurface.java

@@ -40,6 +40,7 @@
 import uk.co.caprica.vlcj.binding.internal.libvlc_video_transfer_func_e;
 import uk.co.caprica.vlcj.binding.internal.libvlc_video_update_output_cb;
 import uk.co.caprica.vlcj.player.base.MediaPlayer;
+import uk.co.caprica.vlcj.player.base.MouseButton;
 import uk.co.caprica.vlcj.player.embedded.videosurface.videoengine.VideoEngine;
 import uk.co.caprica.vlcj.player.embedded.videosurface.videoengine.VideoEngineCallback;
 import uk.co.caprica.vlcj.player.embedded.videosurface.videoengine.VideoEngineWindowCallbackHandler;
@@ -49,6 +50,14 @@
 /**
  * Implementation of a video surface that bridges native video engine callbacks to a rendering API (like JOGL, LWJGL and
  * so on).
+ * <p>
+ * The window callback methods <strong>must not</strong> be invoked concurrently:
+ * <ul>
+ *     <li>{@link #resize(int, int)}</li>
+ *     <li>{@link #mouseMoved(int, int)}</li>
+ *     <li>{@link #mousePressed(MouseButton)}</li>
+ *     <li>{@link #mouseReleased(MouseButton)}</li>
+ * </ul>
  */
 public final class VideoEngineVideoSurface extends VideoSurface {
 
@@ -91,6 +100,44 @@ public VideoEngineVideoSurface(VideoEngine engine, VideoEngineCallback callback,
         this.callback = callback;
     }
 
+    /**
+     * Report a video surface size change to the native video surface.
+     *
+     * @param width new width
+     * @param height new height
+     */
+    public void resize(int width, int height) {
+        windowCallbackHandler.setSize(width, height);
+    }
+
+    /**
+     * Report a mouse moved event to the native video surface
+     *
+     * @param x new mouse x position
+     * @param y new mouse y position
+     */
+    public void mouseMoved(int x, int y) {
+        windowCallbackHandler.mouseMoved(x, y);
+    }
+
+    /**
+     * Report a mouse pressed event to the native video surface.
+     *
+     * @param mouseButton button that was pressed
+     */
+    public void mousePressed(MouseButton mouseButton) {
+        windowCallbackHandler.mousePressed(mouseButton);
+    }
+
+    /**
+     * Report a mouse released event to the native video surface.
+     *
+     * @param mouseButton button that was pressed
+     */
+    public void mouseReleased(MouseButton mouseButton) {
+        windowCallbackHandler.mouseReleased(mouseButton);
+    }
+
     @Override
     public void attach(MediaPlayer mediaPlayer) {
         libvlc_video_set_output_callbacks(

src/main/java/uk/co/caprica/vlcj/player/embedded/videosurface/videoengine/VideoEngineWindowCallbackHandler.java

@@ -28,6 +28,8 @@
 
 /**
  * Handler component that bridges a vlcj application with the native video engine window callback.
+ * <p>
+ * The various callback method invocations <strong>must not</strong> be made concurrently.
  */
 public final class VideoEngineWindowCallbackHandler implements VideoEngineWindowCallback {