Simple CGRect utils #core-graphics #objective-c #utils #cgrect

RectUtils.h

#ifndef RECTUTILS_H
#define RECTUTILS_H

#include <CoreGraphics/CGGeometry.h>

CG_INLINE CGRect CGRectChangeSize(CGRect rect, CGSize size);
CG_INLINE CGRect CGRectChangeWidth(CGRect rect, CGFloat width);
CG_INLINE CGRect CGRectChangeHeight(CGRect rect, CGFloat height);

CG_INLINE CGRect CGRectChangeOrigin(CGRect rect, CGPoint origin);
CG_INLINE CGRect CGRectChangeY(CGRect rect, CGFloat y);
CG_INLINE CGRect CGRectChangeX(CGRect rect, CGFloat x);

CG_INLINE CGRect CGRectAspectFit(CGRect parentRect, CGSize childSize);
CG_INLINE CGRect CGRectAspectFill(CGRect parentRect, CGSize childSize);

CG_INLINE CGRect CGRectMakeFromOriginAndSize(CGPoint origin, CGSize size);

CG_INLINE CGSize CGSizeAspectFit(CGSize parentSize, CGSize childSize);
CG_INLINE CGSize CGSizeAspectFill(CGSize parentSize, CGSize childSize);
CG_INLINE CGSize CGSizeChangeHeigth(CGSize size, CGFloat height);
CG_INLINE CGSize CGSizeChangeWidth(CGSize size, CGFloat width);

/*** Definitions of inline functions. ***/

CG_INLINE CGRect CGRectChangeSize(CGRect rect, CGSize size)
{ return CGRectMake(rect.origin.x, rect.origin.y, size.width, size.height); }

CG_INLINE CGRect CGRectChangeWidth(CGRect rect, CGFloat width)
{ return CGRectMake(rect.origin.x, rect.origin.y, width, rect.size.height); }

CG_INLINE CGRect CGRectChangeHeight(CGRect rect, CGFloat height)
{ return CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, height); }

CG_INLINE CGRect CGRectChangeOrigin(CGRect rect, CGPoint origin)
{ return CGRectMake(origin.x, origin.y, rect.size.width, rect.size.height); }

CG_INLINE CGRect CGRectChangeY(CGRect rect, CGFloat y)
{ return CGRectMake(rect.origin.x, y, rect.size.width, rect.size.height); }

CG_INLINE CGRect CGRectChangeX(CGRect rect, CGFloat x)
{ return CGRectMake(x, rect.origin.y, rect.size.width, rect.size.height); }

CG_INLINE CGRect CGRectMakeFromOriginAndSize(CGPoint origin, CGSize size)
{ return CGRectMake(origin.x, origin.y, size.width, size.height); }

CG_INLINE CGSize CGSizeAspectFit(CGSize parentSize, CGSize childSize)
{
    return (parentSize.width / parentSize.height > childSize.width / childSize.height) ?
        CGSizeMake(childSize.width * parentSize.height / childSize.height, parentSize.height) :
        CGSizeMake(parentSize.width, childSize.height * parentSize.width / childSize.width);
}

CG_INLINE CGSize CGSizeAspectFill(CGSize parentSize, CGSize childSize)
{
    return (parentSize.width / parentSize.height > childSize.width / childSize.height) ?
        CGSizeMake(parentSize.width, childSize.height * parentSize.width / childSize.width) :
        CGSizeMake(childSize.width * parentSize.height / childSize.height, parentSize.height);
}

CG_INLINE CGRect CGRectAspectFit(CGRect parentRect, CGSize childSize)
{
    CGSize resultSize = CGSizeAspectFit(parentRect.size, childSize);
    CGPoint resultOrigin = CGPointMake(parentRect.origin.x + (parentRect.size.width - resultSize.width) / 2.0,
                                       parentRect.origin.y + (parentRect.size.height - resultSize.height) / 2.0);
    return CGRectMakeFromOriginAndSize(resultOrigin, resultSize);
}

CG_INLINE CGRect CGRectAspectFill(CGRect parentRect, CGSize childSize)
{
    CGSize resultSize = CGSizeAspectFill(parentRect.size, childSize);
    CGPoint resultOrigin = CGPointMake(parentRect.origin.x + (parentRect.size.width - resultSize.width) / 2.0,
                                       parentRect.origin.y + (parentRect.size.height - resultSize.height) / 2.0);
    return CGRectMakeFromOriginAndSize(resultOrigin, resultSize);
}

CG_INLINE CGSize CGSizeChangeHeigth(CGSize size, CGFloat height)
{ return CGSizeMake(size.width, height); }

CG_INLINE CGSize CGSizeChangeWidth(CGSize size, CGFloat width)
{ return CGSizeMake(width, size.height); }

#endif // RECTUTILS_H