1 /* 2 * Copyright (c) 1995, 2014, 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 package java.awt.peer; 26 27 import java.awt.Canvas; 28 import java.awt.GraphicsConfiguration; 29 30 /** 31 * The peer interface for {@link Canvas}. 32 * 33 * The peer interfaces are intended only for use in porting 34 * the AWT. They are not intended for use by application 35 * developers, and developers should not implement peers 36 * nor invoke any of the peer methods directly on the peer 37 * instances. 38 */ 39 public interface CanvasPeer extends ComponentPeer { 40 /** 41 * Requests a GC that best suits this Canvas. The returned GC may differ 42 * from the requested GC passed as the argument to this method. This method 43 * must return a non-null value (given the argument is non-null as well). 44 * 45 * @param gc the requested graphics configuration 46 * @return a graphics configuration that best suits this Canvas 47 * @since 1.7 48 */ getAppropriateGraphicsConfiguration( GraphicsConfiguration gc)49 GraphicsConfiguration getAppropriateGraphicsConfiguration( 50 GraphicsConfiguration gc); 51 } 52