/* gtk_jawt.c -- GTK implementation of classpath_jawt.h
   Copyright (C) 2005 Free Software Foundation, Inc.

   This file is part of GNU Classpath.

   GNU Classpath is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   GNU Classpath 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 for more details.

   You should have received a copy of the GNU General Public License
   along with GNU Classpath; see the file COPYING.  If not, write to the
   Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.

   Linking this library statically or dynamically with other modules is
   making a combined work based on this library.  Thus, the terms and
   conditions of the GNU General Public License cover the whole
   combination.

   As a special exception, the copyright holders of this library give you
   permission to link this library with independent modules to produce an
   executable, regardless of the license terms of these independent
   modules, and to copy and distribute the resulting executable under
   terms of your choice, provided that you also meet, for each linked
   independent module, the terms and conditions of the license of that
   module.  An independent module is a module which is not derived from
   or based on this library.  If you modify this library, you may extend
   this exception to your version of the library, but you are not
   obligated to do so.  If you do not wish to do so, delete this
   exception statement from your version. */


#include "gtkpeer.h"
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include "classpath_jawt.h"

jint
classpath_jawt_get_awt_version ()
{
  return CLASSPATH_JAWT_VERSION;
}

Display*
classpath_jawt_get_default_display (JNIEnv* env, jobject canvas)
{
  GdkDisplay *display;
  Display *xdisplay;
  GtkWidget *widget;
  void *ptr;
  jobject peer;
  jclass class_id;
  jmethodID method_id;

  /* retrieve peer object */
  class_id = (*env)->GetObjectClass (env, canvas);

  method_id = (*env)->GetMethodID (env, class_id,
				   "getPeer",
				   "()Ljava/awt/peer/ComponentPeer;");

  peer = (*env)->CallObjectMethod (env, canvas, method_id);

  ptr = NSA_GET_PTR (env, peer);

  gdk_threads_enter ();

  widget = GTK_WIDGET (ptr);

  /* widget should be realized before Canvas.paint is called. */
  g_assert (GTK_WIDGET_REALIZED (widget));

  display = gtk_widget_get_display (widget);

  xdisplay = GDK_DISPLAY_XDISPLAY (display);

  gdk_threads_leave ();

  return xdisplay;
}

VisualID
classpath_jawt_get_visualID (JNIEnv* env, jobject canvas)
{
  GtkWidget *widget;
  Visual *visual;
  void *ptr;
  jobject peer;
  jclass class_id;
  jmethodID method_id;

  class_id = (*env)->GetObjectClass (env, canvas);

  method_id = (*env)->GetMethodID (env, class_id,
				   "getPeer",
				   "()Ljava/awt/peer/ComponentPeer;");

  peer = (*env)->CallObjectMethod (env, canvas, method_id);

  ptr = NSA_GET_PTR (env, peer);

  gdk_threads_enter ();

  widget = GTK_WIDGET (ptr);

  g_assert (GTK_WIDGET_REALIZED (widget));

  visual = gdk_x11_visual_get_xvisual (gtk_widget_get_visual (widget));
  g_assert (visual != NULL);

  gdk_threads_leave ();

  return visual->visualid;
}

Drawable
classpath_jawt_get_drawable (JNIEnv* env, jobject canvas)
{
  GtkWidget *widget;
  int drawable;
  void *ptr;
  jobject peer;
  jclass class_id;
  jmethodID method_id;

  class_id = (*env)->GetObjectClass (env, canvas);

  method_id = (*env)->GetMethodID (env, class_id,
				   "getPeer",
				   "()Ljava/awt/peer/ComponentPeer;");

  peer = (*env)->CallObjectMethod (env, canvas, method_id);

  ptr = NSA_GET_PTR (env, peer);

  gdk_threads_enter ();

  widget = GTK_WIDGET (ptr);

  g_assert (GTK_WIDGET_REALIZED (widget));

  drawable = GDK_DRAWABLE_XID (widget->window);

  gdk_threads_leave ();

  return drawable;
}

jint
classpath_jawt_object_lock (jobject lock)
{
  JNIEnv *env = gdk_env();
  (*env)->MonitorEnter (env, lock);
  return 0;
}

void
classpath_jawt_object_unlock (jobject lock)
{
  JNIEnv *env = gdk_env();
  (*env)->MonitorExit (env, lock);
}

jint
classpath_jawt_lock ()
{
  gdk_threads_enter ();
  return 0;
}

void
classpath_jawt_unlock ()
{
  gdk_threads_leave ();
}

jobject
classpath_jawt_create_lock ()
{
  JNIEnv *env = gdk_env ();
  jobject lock = (*env)->NewStringUTF (env, "jawt-lock");
  NSA_SET_GLOBAL_REF (env, lock);
  return lock;
}

void
classpath_jawt_destroy_lock (jobject lock)
{
  JNIEnv *env = gdk_env ();
  NSA_DEL_GLOBAL_REF (env, lock);
}