Java example source code file (awt_Plugin.c)

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Java - Java tags/keywords

awt_lock, awt_noflush_unlock, awt_unlock, awtlock, awtnoflushunlock, awtunlock, colormap, debug, defaultscreen, display, headless, null, this, visual

The awt_Plugin.c Java example source code

/*
 * Copyright (c) 1999, 2001, 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.
 */

#ifdef HEADLESS
    #error This file should not be included in headless library
#endif

#include <jni.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <awt.h>
#include <awt_p.h>

/*
 * Fix 4221246: Provide utility function for Netscape to use to
 * get AWT display, depth, colormap, and number of colors.
 *
 */

Display *getAwtDisplay(void)
{
  return awt_display;
}

void getExtAwtData(Display      *display,
                   int32_t      screen,
                   int32_t      *awt_depth,
                   Colormap     *awt_cmap,
                   Visual       **awt_visual,
                   int32_t      *awt_num_colors,
                   void         *pReserved)
{
  AwtGraphicsConfigDataPtr defaultConfig = NULL;

#ifdef DEBUG
  if (pReserved != NULL) {
    jio_fprintf(stderr,
                "getExtAwtData: warning: reserved pointer is not null\n");
  }
#endif

  if (screen >= 0) {
    defaultConfig = getDefaultConfig(screen);
  }

  if (defaultConfig) {
    if (awt_depth != NULL) {
      *awt_depth = defaultConfig->awt_depth;
    }

    if (awt_cmap != NULL) {
      *awt_cmap = defaultConfig->awt_cmap;
    }

    if (awt_visual != NULL) {
      *awt_visual = defaultConfig->awt_visInfo.visual;
    }

    if (awt_num_colors != NULL) {
      *awt_num_colors = defaultConfig->awt_num_colors;
    }
  }
}

/*
 * getAwtData provided for compatibility with Solaris 1.2 Java Plug-in
 *
 */
void getAwtData(int32_t          *awt_depth,
                Colormap     *awt_cmap,
                Visual       **awt_visual,
                int32_t          *awt_num_colors,
                void         *pReserved)
{
  Display *display = getAwtDisplay();

  getExtAwtData(display,
                DefaultScreen(display),
                awt_depth,
                awt_cmap,
                awt_visual,
                awt_num_colors,
                pReserved);
}

/*
 * Fix 4221246: Provide utility funtion for Netscape to get
 * function pointers to AWT lock functions.
 *
 */

static void awt_lock_wrapper(JNIEnv *env) {
  AWT_LOCK();
}

static void awt_unlock_wrapper(JNIEnv *env) {
  AWT_UNLOCK();
}

static void awt_noflush_unlock_wrapper(JNIEnv *env) {
  AWT_NOFLUSH_UNLOCK();
}

void getAwtLockFunctions(void (**AwtLock)(JNIEnv *),
                         void (**AwtUnlock)(JNIEnv *),
                         void (**AwtNoFlushUnlock)(JNIEnv *),
                         void *pReserved)
{
#ifdef DEBUG
  if (pReserved != NULL) {
    jio_fprintf(stderr,
                "getAwtLockFunctions: warning: reserved pointer is not null\n");
  }
#endif

  if (AwtLock != NULL) {
    *AwtLock = awt_lock_wrapper;
  }

  if (AwtUnlock != NULL) {
    *AwtUnlock = awt_unlock_wrapper;
  }

  if (AwtNoFlushUnlock != NULL) {
    *AwtNoFlushUnlock = awt_noflush_unlock_wrapper;
  }
}