1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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11  * This code is distributed in the hope that it will be useful, but WITHOUT
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13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
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24  */
25 
26 package sun.awt;
27 
28 /**
29  * This interface can be implemented on a Graphics object to allow
30  * the lightweight component code to permanently install a rectangular
31  * maximum clip that cannot be extended with setClip and which works in
32  * conjunction with the hit() and getTransform() methods of Graphics2D
33  * to make it appear as if there really was a component with these
34  * dimensions.
35  */
36 public interface ConstrainableGraphics {
37     /**
38      * Constrain this graphics object to have a permanent device space
39      * origin of (x, y) and a permanent maximum clip of (x,y,w,h).
40      * Calling this method is roughly equivalent to:
41      *    g.translate(x, y);
42      *    g.clipRect(0, 0, w, h);
43      * except that the clip can never be extended outside of these
44      * bounds, even with setClip() and for the fact that the (x,y)
45      * become a new device space coordinate origin.
46      *
47      * These methods are recursive so that you can further restrict
48      * the object by calling the constrain() method more times, but
49      * you can never enlarge its restricted maximum clip.
50      */
constrain(int x, int y, int w, int h)51     public void constrain(int x, int y, int w, int h);
52 }
53