| /* |
| * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "sun_awt_windows_WBufferStrategy.h" |
| #include "jni_util.h" |
| |
| |
| static jmethodID getBackBufferID; |
| |
| /* |
| * Class: sun_awt_windows_WBufferStrategy |
| * Method: initIDs |
| * Signature: (Ljava/lang/Class;)V |
| */ |
| JNIEXPORT void JNICALL |
| Java_sun_awt_windows_WBufferStrategy_initIDs(JNIEnv *env, jclass wbs, |
| jclass componentClass) |
| { |
| getBackBufferID = env->GetMethodID(componentClass, "getBackBuffer", |
| "()Ljava/awt/Image;"); |
| } |
| |
| /** |
| * Native method of WBufferStrategy.java. Given a Component |
| * object, this method will find the back buffer associated |
| * with the Component's BufferStrategy and return a handle |
| * to it. |
| */ |
| extern "C" JNIEXPORT jobject JNICALL |
| Java_sun_awt_windows_WBufferStrategy_getDrawBuffer(JNIEnv *env, jclass wbs, |
| jobject component) |
| { |
| if (!JNU_IsNull(env, getBackBufferID)) { |
| return env->CallObjectMethod(component, getBackBufferID); |
| } else { |
| return NULL; |
| } |
| } |