Java Illuminated, 5th Edition

12.14 Mouse and Touch Events

A truly interactive application allows the user to point and click using the mouse or to touch the screen. Any mouse activity (clicking, moving, or dragging) by the user generates a MouseEvent. Any touch activity by the user generates a TouchEvent. When any mouse or touch activity occurs, we will be interested in determining where it happened on the window. To determine the (x, y) coordinate of a mouse event, we can call two methods of the MouseEvent class, getSceneX and getSceneY, which are described in Table 12.42. To determine the (x, y) coordinate of a touch event, we can first call the getTouchPoint method of the TouchEvent class, which returns a TouchPoint, and then call the getSceneX and getSceneY methods ...