hxeventrecordutils.m

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: HXEventRecordUtils.m,v 1.2.6.3 2004/07/09 01:49:35 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
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 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
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 * will apply. You may also obtain the license terms directly from
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 * ***** END LICENSE BLOCK ***** */

#import "HXEventRecordUtils.h"
#include "CHXClientDebug.h"

@implementation HXEventRecordUtils

+ (id)alloc
{
	CHXASSERT( NO ); // @"Why is an HXEventRecordUtils being allocated?"
	return nil;
}

+ (Point)convertToPoint:(NSPoint)nativePt
{
	Point point;
	point.h = nativePt.x;
	NSScreen* mainScreen = [NSScreen mainScreen]; // XXXSEH: Is this correct? Doc.'s indicate that this is the screen with the key window. Odd?
	NSRect mainFrame = [mainScreen frame];
	point.v = NSHeight( mainFrame ) - nativePt.y;
	return point;
}

+ (void)createNullEvent:(EventRecord *)classicEvent
{
	classicEvent->what = nullEvent;
	classicEvent->when = ( double ) 60 * GetCurrentEventTime();
	classicEvent->message = 0; // Undefined.
	classicEvent->modifiers = GetCurrentKeyModifiers();
	classicEvent->where = [HXEventRecordUtils convertToPoint:[NSEvent mouseLocation]];
}

+ (void)convertEvent:(NSEvent *)theEvent toEventRecord:(EventRecord *)classicEvent
{
	classicEvent->when = ( double ) 60 * [theEvent timestamp];
	
	classicEvent->modifiers = 0;
	unsigned int modifierFlags = [theEvent modifierFlags];
	if ( modifierFlags & NSAlphaShiftKeyMask )	classicEvent->modifiers |= alphaLock;
	if ( modifierFlags & NSShiftKeyMask )		classicEvent->modifiers |= shiftKey;
	if ( modifierFlags & NSControlKeyMask )		classicEvent->modifiers |= controlKey;
	if ( modifierFlags & NSAlternateKeyMask )	classicEvent->modifiers |= optionKey;
	if ( modifierFlags & NSCommandKeyMask )		classicEvent->modifiers |= cmdKey;
	if ( [theEvent buttonNumber] != 0 )			classicEvent->modifiers |= btnState;
	
	NSEventType eventType = [theEvent type];
	switch ( eventType )
	{
		case NSLeftMouseDown:
		case NSRightMouseDown:
		case NSOtherMouseDown:
		{
			classicEvent->what = mouseDown;
			classicEvent->message = 0; // Undefined.
			classicEvent->where = [HXEventRecordUtils convertToPoint:[[theEvent window] convertBaseToScreen:[theEvent locationInWindow]]];
			if ( eventType == NSRightMouseDown ) classicEvent->modifiers |= controlKey; // Fake a control click.
		}
		break;

		case NSLeftMouseUp:
		case NSRightMouseUp:
		case NSOtherMouseUp:
		{
			classicEvent->what = mouseUp;
			classicEvent->message = 0; // Undefined.
			classicEvent->where = [HXEventRecordUtils convertToPoint:[[theEvent window] convertBaseToScreen:[theEvent locationInWindow]]];
			if ( eventType == NSRightMouseDown ) classicEvent->modifiers |= controlKey; // Fake a control click.
		}
		break;
		
		case NSMouseMoved:
		case NSLeftMouseDragged:
		case NSRightMouseDragged:
		case NSOtherMouseDragged:
		case NSMouseEntered:
		case NSMouseExited:
		{
			classicEvent->what = osEvt; // XXXSEH: Is this the best event to set?
			classicEvent->message = mouseMovedMessage << 24;
			classicEvent->where = [HXEventRecordUtils convertToPoint:[[theEvent window] convertBaseToScreen:[theEvent locationInWindow]]];
		}
		break;
		
		case NSKeyDown:
		case NSKeyUp:
		{
			classicEvent->what = ( eventType == NSKeyDown ) ? ( [theEvent isARepeat] ? autoKey : keyDown ) : keyUp;
			UInt8 keyCode  = [theEvent keyCode];
			UInt8 charCode = *[[theEvent charactersIgnoringModifiers] lossyCString]; // XXXSEH: Is this the best way?
			classicEvent->message = ( keyCode << 8 ) | charCode;
			classicEvent->where = [HXEventRecordUtils convertToPoint:[NSEvent mouseLocation]];
		}
		break;
		
		default:
		{
			classicEvent->what = nullEvent;
			classicEvent->message = 0; // Undefined.
			classicEvent->where = [HXEventRecordUtils convertToPoint:[NSEvent mouseLocation]];
		}
		break;
	}
}

@end