MouseInfoPeer.java example

Explorer
openjdk8-jdk-master
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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package java.awt.peer;

import java.awt.Window;
import java.awt.Point;

/**
 * Peer interface for {@link MouseInfo}. This is used to get some additional
 * information about the mouse.
 *
 * The peer interfaces are intended only for use in porting
 * the AWT. They are not intended for use by application
 * developers, and developers should not implement peers
 * nor invoke any of the peer methods directly on the peer
 * instances.
 */
public interface MouseInfoPeer {

    /**
     * This method does two things: it fills the point fields with
     * the current coordinates of the mouse cursor and returns the
     * number of the screen device where the pointer is located.
     * The number of the screen device is only returned for independent
     * devices (which are not parts of a virtual screen device).
     * For virtual screen devices, 0 is returned.
     * Mouse coordinates are also calculated depending on whether
     * or not the screen device is virtual. For virtual screen
     * devices, pointer coordinates are calculated in the virtual
     * coordinate system. Otherwise, coordinates are calculated in
     * the coordinate system of the screen device where the pointer
     * is located.
     * See java.awt.GraphicsConfiguration documentation for more
     * details about virtual screen devices.
     */
    int fillPointWithCoords(Point point);

    /**
     * Returns whether or not the window is located under the mouse
     * pointer. The window is considered to be under the mouse pointer
     * if it is showing on the screen, and the mouse pointer is above
     * the part of the window that is not obscured by any other windows.
     */
    boolean isWindowUnderMouse(Window w);

}