/* 
 * Copyright (c) 2002 Light Weight Java Game Library Project
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are 
 * met:
 * 
 * * Redistributions of source code must retain the above copyright 
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'Light Weight Java Game Library' nor the names of 
 *   its contributors may be used to endorse or promote products derived 
 *   from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include <Carbon/Carbon.h>
#include <AGL/agl.h>
#include <OpenGL/gl.h>
#include "org_lwjgl_Display.h"



AGLContext		ctx;
Rect			rect;
WindotPtr		win;


/*
 * Class:     org_lwjgl_Display
 * Method:    getAvailableDisplayModes
 * Signature: ()[Lorg/lwjgl/DisplayMode;
 */
JNIEXPORT jobjectArray JNICALL Java_org_lwjgl_Display_getAvailableDisplayModes
  (JNIEnv * env, jclass clazz)
{
	return NULL;
}

/*
 * Class:     org_lwjgl_Display
 * Method:    nCreate
 * Signature: (IIIIZ)Z
 */
JNIEXPORT jboolean JNICALL Java_org_lwjgl_Display_nCreate
  (JNIEnv * env, jclass clazz, jint width, jint height, jint bpp, jint freq, jboolean debug)
{
#ifdef _DEBUG
	printf("Creating display: size %dx%d %dhz %dbpp...\n", width, height, freq, bpp);
#endif
        
        InitCursor();
        
        SetRect( &rect, 0, 0, width, height );
        win = NewCWindow( NULL, &rect, "Lightweight Java Gaming Library", true, kWindowShadowDialogProc, (WindowPtr) -1L, true, 0L );
        
        SetPortWindowPort( win );
        
        if ( win==null )
        {
            printf("Failed to create a window\n");
            return 1;
        }
        
        ShowWindow( win );
        
	/* Setup the OpenGL context */
        GLint          attrib[] = { AGL_RGBA, AGL_NONE };
        
	ctx = setupAGL(   attrib, (AGLDrawable) win);
	if(ctx == NULL) 
        {
            return JNI_FALSE;
        }        


	jfieldID fid_handle = env->GetStaticFieldID(clazz, "handle", "I");
	env->SetStaticIntField(clazz, fid_handle, (jint) win);

	return JNI_TRUE;
}

/*
 * Class:     org_lwjgl_Display
 * Method:    nDestroy
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_org_lwjgl_Display_nDestroy
  (JNIEnv * env, jclass clazz)
{
        // cleanup the AGL context
        //
        cleanupAGL( ctx );
        
        // cleanup the window
        //
        DisposeWindow( win );
        
#ifdef _DEBUG
	printf("Destroyed display\n");
#endif
}


/*
** OpenGL Setup
*/
static AGLContext setupAGL( GLint* attrib, AGLDrawable win)
{
	AGLPixelFormat fmt;
	AGLContext     ctx;
	GLboolean      ok;

	/* Choose an rgb pixel format */
	fmt = aglChoosePixelFormat(NULL, 0, attrib);
	if(fmt == NULL) 
        {
            return NULL;
        }

	/* Create an AGL context */
	ctx = aglCreateContext(fmt, NULL);
	if(ctx == NULL)
        {
            return NULL;
        }

	/* Attach the window to the context */
	ok = aglSetDrawable(ctx, GetWindowPort(win) );
	if(!ok) 
        {
            return NULL;
        }
	
	/* Make the context the current context */
	ok = aglSetCurrentContext(ctx);
	if(!ok) 
        {
            return NULL;
        }

	/* Pixel format is no longer needed */
	aglDestroyPixelFormat(fmt);

	return ctx;
}

/*
** OpenGL Cleanup
*/
static void cleanupAGL(AGLContext ctx)
{
	aglSetCurrentContext(NULL);
	aglSetDrawable(ctx, NULL);
	aglDestroyContext(ctx);
}