MouseInfoPeer


1   /*
2    * @(#)MouseInfoPeer.java   1.2 03/12/19
3    *
4    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6    */
7   
8   package java.awt.peer;
9   
10  import java.awt.Window  ;
11  import java.awt.Point  ;
12  
13  /**
14   * The peer interfaces are intended only for use in porting
15   * the AWT. They are not intended for use by application
16   * developers, and developers should not implement peers
17   * nor invoke any of the peer methods directly on the peer
18   * instances.
19   */
20  public interface MouseInfoPeer {
21  
22      /**
23       * This method does two things: it fills the point fields with
24       * the current coordinates of the mouse cursor and returns the
25       * number of the screen device where the pointer is located.
26       * The number of the screen device is only returned for independent
27       * devices (which are not parts of a virtual screen device).
28       * For virtual screen devices, 0 is returned.
29       * Mouse coordinates are also calculated depending on whether
30       * or not the screen device is virtual. For virtual screen
31       * devices, pointer coordinates are calculated in the virtual
32       * coordinate system. Otherwise, coordinates are calculated in
33       * the coordinate system of the screen device where the pointer
34       * is located.
35       * See java.awt.GraphicsConfiguration documentation for more 
36       * details about virtual screen devices.
37       */
38      int fillPointWithCoords(Point   point);
39  
40      /**
41       * Returns whether or not the window is located under the mouse
42       * pointer. The window is considered to be under the mouse pointer
43       * if it is showing on the screen, and the mouse pointer is above
44       * the part of the window that is not obscured by any other windows.
45       */
46      boolean isWindowUnderMouse(Window   w);
47  
48  }
49
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