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| 1 | /* | ||
| 2 | * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * 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 | } | ||