01: /*
02: * Copyright 1998 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
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: */
51: public void constrain(int x, int y, int w, int h);
52: }
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