1 /* 2 * Copyright (c) 2009, 2013, 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 com.sun.prism; 27 28 import com.sun.javafx.geom.Rectangle; 29 30 public interface Presentable extends RenderTarget { 31 /** 32 * Locks any underlying resources needed for a createGraphics/prepare/present 33 * sequence and returns a boolean indicating if the presentable needs to be 34 * recreated. 35 * If the method returns true and the Presentable implements 36 * {@link GraphicsResource} then its {@code dispose()} method will be 37 * called prior to recreating a new {@code Presentable} object and 38 * so no resource should need to be locked in that case. 39 * The resources will be unlocked in either {@link #prepare()} or 40 * {@link #present()}. 41 * 42 * @param pState The presentation state for the upcoming pulse 43 * @return true if the caller should recreate the Presentable 44 */ 45 public boolean lockResources(PresentableState pState); 46 47 /** 48 * display the indicated region to the user. 49 * @param dirtyregion display region or null for full area 50 * @return true if the provided region was successfully displayed, 51 * false otherwise 52 */ 53 public boolean prepare(Rectangle dirtyregion); 54 55 /** 56 * present the prepared region to the user. 57 */ 58 public boolean present(); 59 60 public float getPixelScaleFactorX(); 61 public float getPixelScaleFactorY(); 62 }