1 /*
   2  * Copyright (c) 1999, 2015, 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 #include <jawt.h>
  27 
  28 #include "awt_DrawingSurface.h"
  29 
  30 /*
  31  * Declare library specific JNI_Onload entry if static build
  32  */
  33 DEF_STATIC_JNI_OnLoad
  34 
  35 /*
  36  * Get the AWT native structure.  This function returns JNI_FALSE if
  37  * an error occurs.
  38  */
  39 JNIEXPORT jboolean JNICALL JAWT_GetAWT(JNIEnv* env, JAWT* awt)
  40 {
  41 #if defined(JAVASE_EMBEDDED) && defined(HEADLESS)
  42     /* there are no AWT libs available at all */
  43     return JNI_FALSE;
  44 #else
  45     if (awt == NULL) {
  46         return JNI_FALSE;
  47     }
  48 
  49     if (awt->version != JAWT_VERSION_1_3
  50         && awt->version != JAWT_VERSION_1_4
  51         && awt->version != JAWT_VERSION_1_7) {
  52         return JNI_FALSE;
  53     }
  54 
  55     awt->GetDrawingSurface = awt_GetDrawingSurface;
  56     awt->FreeDrawingSurface = awt_FreeDrawingSurface;
  57     if (awt->version >= JAWT_VERSION_1_4) {
  58         awt->Lock = awt_Lock;
  59         awt->Unlock = awt_Unlock;
  60         awt->GetComponent = awt_GetComponent;
  61     }
  62 
  63     return JNI_TRUE;
  64 #endif
  65 }