/* 
 * Copyright (c) 2002-2008 LWJGL 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 'LWJGL' 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.
 */

/**
 * $Id: org_lwjgl_opengl_MacOSXContextImplementation.m 3116 2008-08-19 16:46:03Z spasi $
 *
 * @author elias_naur <elias_naur@users.sourceforge.net>
 * @version $Revision: 3116 $
 */

#import <jni.h>
#import <Cocoa/Cocoa.h>
#import "org_lwjgl_opengl_MacOSXContextImplementation.h"
#import "context.h"
#import "common_tools.h"

typedef struct {
	NSOpenGLContext *context;
} MacOSXContext;

JNIEXPORT jobject JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nCreate
  (JNIEnv *env, jclass clazz, jobject peer_info_handle, jobject attribs, jobject shared_context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXPeerInfo *peer_info;
	MacOSXContext *shared_context_info;
	MacOSXContext *context_info;
	NSOpenGLContext *context;
	NSOpenGLContext *shared_context = NULL;
	jobject context_handle = newJavaManagedByteBuffer(env, sizeof(MacOSXContext));
	if (context_handle == NULL) {
		throwException(env, "Could not create handle buffer");
		return NULL;
	}
	peer_info = (MacOSXPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
	if (shared_context_handle != NULL) {
		shared_context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, shared_context_handle);
		shared_context = shared_context_info->context;
	}
	context = [[NSOpenGLContext alloc] initWithFormat:peer_info->pixel_format shareContext:shared_context];
	if (context == NULL) {
		throwException(env, "Could not create context");
		return NULL;
	}
	context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	context_info->context = context;
	[pool release];
	return context_handle;		
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nSwapBuffers
  (JNIEnv *env, jclass clazz, jobject context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *peer_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	[peer_info->context flushBuffer];
	[pool release];
}


JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nUpdate
  (JNIEnv *env, jclass clazz, jobject context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	[context_info->context update];
	[pool release];
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_clearDrawable
  (JNIEnv *env, jclass clazz, jobject context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	[context_info->context clearDrawable];
	[pool release];
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nReleaseCurrentContext
  (JNIEnv *env, jclass clazz) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	[NSOpenGLContext clearCurrentContext];
	[pool release];
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_setView
  (JNIEnv *env, jclass clazz, jobject peer_info_handle, jobject context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	MacOSXPeerInfo *peer_info = (MacOSXPeerInfo *)(*env)->GetDirectBufferAddress(env, peer_info_handle);
	if (peer_info->window) {
		[context_info->context setView: peer_info->nsview];
	} else {
		[context_info->context setPixelBuffer:peer_info->pbuffer cubeMapFace:0 mipMapLevel:0 currentVirtualScreen:0];
	}
	[pool release];
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nMakeCurrent
  (JNIEnv *env, jclass clazz, jobject context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	[context_info->context makeCurrentContext];
	[pool release];
}

JNIEXPORT jboolean JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nIsCurrent
  (JNIEnv *env, jclass clazz, jobject context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	bool result = context_info->context == [NSOpenGLContext currentContext];
	[pool release];
	return result ? JNI_TRUE : JNI_FALSE;
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nSetSwapInterval
  (JNIEnv *env, jclass clazz, jobject context_handle, jint int_value) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	GLint value = int_value;
	[context_info->context setValues:&value forParameter:NSOpenGLCPSwapInterval];
	[pool release];
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXContextImplementation_nDestroy
  (JNIEnv *env, jclass clazz, jobject context_handle) {
	NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
	MacOSXContext *context_info = (MacOSXContext *)(*env)->GetDirectBufferAddress(env, context_handle);
	[context_info->context clearDrawable];
	[context_info->context release];
	[pool release];
}