CCUIViewWrapper.m

/* 
 * CCUIViewWrapper
 *
 * http://www.cocos2d-iphone.org/forum/topic/6889
 *
 * Copyright (C) 2010 Blue Ether
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the 'cocos2d for iPhone' license.
 *
 * You will find a copy of this license within the cocos2d for iPhone
 * distribution inside the "LICENSE" file.
 *
 */

#import "CCUIViewWrapper.h"

@implementation CCUIViewWrapper

@synthesize uiItem;

/* -------------------------------------------------------------------------- */
+ (id)wrapperForUIView:(UIView*)ui
{
	return [[[self alloc] initForUIView:ui] autorelease];
}

/* -------------------------------------------------------------------------- */
- (id)initForUIView:(UIView*)ui
{
	self = [self init];
	if (!self)
		return nil;

	self.uiItem = ui;
	return self;
}

/* -------------------------------------------------------------------------- */
- (void)dealloc
{
	self.uiItem = nil;
	[super dealloc];
}

/* -------------------------------------------------------------------------- */
- (void)setParent:(CCNode *)parent
{
	if (parent == nil)
		[uiItem removeFromSuperview];
	else if(uiItem != nil)
		[[[CCDirector sharedDirector] openGLView] addSubview:uiItem];
	[super setParent:parent];
}

/* -------------------------------------------------------------------------- */
- (void)updateUIViewTransform
{
	float thisAngle, pAngle;
	CGAffineTransform transform = CGAffineTransformMakeTranslation(0,
		[[UIScreen mainScreen] bounds].size.height);

	for (CCNode *p = self; p != nil; p = p.parent) {
		thisAngle = CC_DEGREES_TO_RADIANS(p.rotation);

		if (!p.isRelativeAnchorPoint)
			transform = CGAffineTransformTranslate(
				transform, p.anchorPointInPixels.x, p.anchorPointInPixels.y);

		if (p.parent != nil) {
			pAngle = CC_DEGREES_TO_RADIANS(p.parent.rotation);

			transform = CGAffineTransformTranslate(transform,
				(p.position.x * cosf(pAngle)) + (p.position.y * sinf(pAngle)),
				(-p.position.y * cosf(pAngle)) + (p.position.x * sinf(pAngle)));
		} else {
			transform = CGAffineTransformTranslate(
				transform, p.position.x, -p.position.y);
		}

		transform = CGAffineTransformRotate(transform, thisAngle);
		transform = CGAffineTransformScale(transform, p.scaleX, p.scaleY);

		transform = CGAffineTransformTranslate(
			transform, -p.anchorPointInPixels.x, -p.anchorPointInPixels.y);
	}

	[uiItem setTransform:transform];
}

/* -------------------------------------------------------------------------- */
- (void)setVisible:(BOOL)v
{
	[super setVisible:v];
	[uiItem setHidden:!v];
}

/* -------------------------------------------------------------------------- */
- (void)setRotation:(float)protation
{
	[super setRotation:protation];
	[self updateUIViewTransform];
}

/* -------------------------------------------------------------------------- */
- (void)setScaleX:(float)sx
{
	[super setScaleX:sx];
	[self updateUIViewTransform];
}

/* -------------------------------------------------------------------------- */
- (void)setScaleY:(float)sy
{
	[super setScaleY:sy];
	[self updateUIViewTransform];
}

/* -------------------------------------------------------------------------- */
- (void)setOpacity:(GLubyte)opacity
{
	[uiItem setAlpha:opacity / 255.0f];
	[super setOpacity:opacity];
}

/* -------------------------------------------------------------------------- */
- (void)setContentSize:(CGSize)size
{
	[super setContentSize:size];
	CGRect rect = CGRectMake(0, 0, size.width, size.height);
	uiItem.frame = rect;
	uiItem.bounds = rect;
}

/* -------------------------------------------------------------------------- */
- (void)setAnchorPoint:(CGPoint)pnt
{
	[super setAnchorPoint:pnt];
	[self updateUIViewTransform];
}

/* -------------------------------------------------------------------------- */
- (void)setPosition:(CGPoint)pnt
{
	[super setPosition:pnt];
	[self updateUIViewTransform];
}

@end