CocoaExtensions.h

#import <CoreGraphics/CoreGraphics.h>

CGRect CGRectCopy(CGRect rect);

CGRect CGRectCopyWithX(CGRect rect, CGFloat x);
CGRect CGRectCopyWithY(CGRect rect, CGFloat y);
CGRect CGRectCopyWithWidth(CGRect rect, CGFloat width);
CGRect CGRectCopyWithHeight(CGRect rect, CGFloat height);


CGRect CGRectMakeWithSize(CGSize size);

CGRect CGRectMakeWithPointAndSize(CGPoint point, CGSize size);

void CGRectMoveToY(CGRect *rect, CGFloat y);
void CGRectMoveToX(CGRect *rect, CGFloat x);
void CGRectTranslate(CGRect *rect, CGFloat dx, CGFloat dy);

void CGRectResizeToWidth(CGRect *rect, CGFloat width);
void CGRectResizeToHeight(CGRect *rect, CGFloat height);

CocoaExtensions.m

#import "CocoaExtensions.h"

CGRect CGRectCopy(CGRect rect)
{
    CGRect res;
    res.origin = rect.origin;
    res.size = rect.size;
    return res;
}

CGRect CGRectCopyWithX(CGRect rect, CGFloat x)
{
    CGRect res;
    res.origin = CGPointMake(x, rect.origin.y);
    res.size = rect.size;
    return res;
}

CGRect CGRectCopyWithY(CGRect rect, CGFloat y)
{
    CGRect res;
    res.origin = CGPointMake(rect.origin.x, y);
    res.size = rect.size;
    return res;
}

CGRect CGRectCopyWithWidth(CGRect rect, CGFloat width)
{
    CGRect res;
    res.origin = rect.origin;
    res.size = CGSizeMake(width, rect.size.height);
    return res;
}

CGRect CGRectCopyWithHeight(CGRect rect, CGFloat height)
{
    CGRect res;
    res.origin = rect.origin;
    res.size = CGSizeMake(rect.size.width, height);
    return res;
}

CGRect CGRectMakeWithSize(CGSize size)
{
    CGRect rect;
    rect.size = size;
    return rect;
}

CGRect CGRectMakeWithPointAndSize(CGPoint point, CGSize size)
{
    CGRect rect;
    rect.origin = point;
    rect.size = size;
    return rect;
}

void CGRectMoveToY(CGRect *rect, CGFloat y)
{
    rect->origin = CGPointMake(rect->origin.x, y);
}

void CGRectMoveToX(CGRect *rect, CGFloat x)
{
    rect->origin = CGPointMake(x, rect->origin.y);
}

void CGRectTranslate(CGRect *rect, CGFloat dx, CGFloat dy)
{
    rect->origin = CGPointMake(rect->origin.x + dx, rect->origin.y + dy);
}

void CGRectResizeToWidth(CGRect *rect, CGFloat width)
{
    rect->size = CGSizeMake(width, rect->size.height);
}

void CGRectResizeToHeight(CGRect *rect, CGFloat height)
{
    rect->size = CGSizeMake(rect->size.width, height);
}