lwjgl/src/native/macosx/org_lwjgl_opengl_MacOSXNativeMouse.m

/* 
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 * * Redistributions in binary form must reproduce the above copyright
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/**
 * $Id: org_lwjgl_opengl_MacOSXNativeKeyboard.m 3055 2012-08-29 0:46:00Z mojang $
 *
 * Mac OS X native keyboard functions.
 *
 * @author mojang
 * @version $Revision: 3055 $
 */

#import <AppKit/NSApplication.h>
#import <Cocoa/Cocoa.h>
#import <jni.h>
#import <unistd.h>
#import "common_tools.h"
#import "org_lwjgl_opengl_MacOSXNativeMouse.h"
#import "context.h"

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXNativeMouse_nGrabMouse(JNIEnv *env, jclass this, jboolean grab) {
	CGAssociateMouseAndMouseCursorPosition(grab == JNI_TRUE ? FALSE : TRUE);
	if (grab)
		CGDisplayHideCursor(kCGDirectMainDisplay);
	else
		CGDisplayShowCursor(kCGDirectMainDisplay);
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXNativeMouse_nSetCursorPosition(JNIEnv *env, jclass this, jobject window_handle, jint x, jint y) {
	MacOSXWindowInfo *window_info = (MacOSXWindowInfo *)(*env)->GetDirectBufferAddress(env, window_handle);
    
	CGPoint p;
	
	if (window_info->fullscreen) {
		NSPoint point = NSMakePoint(x, y);
		
		// convert point to window/screen coordinates
		point = [window_info->view convertPoint:point fromView:nil];
		
		p.x = point.x;
		p.y = point.y;
	}
	else {
		NSRect screenRect = [[window_info->window screen] frame];
		NSRect viewRect = [window_info->view frame];
		NSRect winRect = [window_info->window frame];
		
		// get window coords of the view origin
		NSPoint viewPoint = [window_info->view convertPoint:viewRect.origin fromView:nil];
		
		// convert y to screen coordinates, origin bottom left
		p.y = winRect.origin.y + viewPoint.y + (viewRect.size.height - y - 1);
		
		p.x = winRect.origin.x + viewPoint.x + x;
		// flip y coordinates (origin top left) to allow use with CGDisplayMoveCursorToPoint
		p.y = screenRect.size.height - p.y - 1;
	}
	
	CGDisplayMoveCursorToPoint(CGMainDisplayID(), p);
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXNativeMouse_nRegisterMouseListener(JNIEnv *env, jobject _this, jobject window_handle) {
	MacOSXWindowInfo *window_info = (MacOSXWindowInfo *)(*env)->GetDirectBufferAddress(env, window_handle);
	[window_info->window setAcceptsMouseMovedEvents:YES];
	window_info->jmouse = (*env)->NewGlobalRef(env, _this);
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXNativeMouse_nUnregisterMouseListener(JNIEnv *env, jobject this, jobject window_handle) {
	MacOSXWindowInfo *window_info = (MacOSXWindowInfo *)(*env)->GetDirectBufferAddress(env, window_handle);
	[window_info->window setAcceptsMouseMovedEvents:NO];
	window_info->jmouse = nil;
}

JNIEXPORT jobject JNICALL Java_org_lwjgl_opengl_MacOSXNativeMouse_nCreateCursor(JNIEnv *env, jobject _this, jint width, jint height, jint x_hotspot, jint y_hotspot, jint num_images, jobject image_buffer, jint images_offset, jobject delay_buffer, jint delays_offset) {
	NSLog(@"nCreateCursor");
	
	char *bytes = (char *)(*env)->GetDirectBufferAddress(env, image_buffer);
	
	NSBitmapImageRep *bitmap = [[NSBitmapImageRep alloc]
								initWithBitmapDataPlanes:(char *)&bytes
								pixelsWide:width pixelsHigh:height
								bitsPerSample:8
								samplesPerPixel:4
								hasAlpha:YES
								isPlanar:NO
								colorSpaceName:NSDeviceRGBColorSpace
								bitmapFormat:NSAlphaNonpremultipliedBitmapFormat
								bytesPerRow:width*4
								bitsPerPixel:32];
	
	NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize(width, height)];
	
	[image addRepresentation:bitmap];
	
	
	NSCursor *cursor = [[NSCursor alloc] initWithImage:image hotSpot:NSMakePoint(x_hotspot, y_hotspot)];
	
	[cursor set]; // temporarily set the cursor here as returning the handle doesn't work yet
	
	return cursor;
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXNativeMouse_nDestroyCursor(JNIEnv *env, jobject _this, jobject handle) {
	// TODO
}

JNIEXPORT void JNICALL Java_org_lwjgl_opengl_MacOSXNativeMouse_nSetCursor(JNIEnv *env, jobject _this, jobject handle) {
	NSLog(@"nSetCursor");
	
	// TODO - this method should get the cursor from the handle and set it
	
	//NSCursor *cursor = (NSCursor *)(*env)->GetDirectBufferAddress(env, handle);
	//[cursor set];
}