CGRect functions

I feel like I spend alot of time manipulating CGRects. Awhile ago I found a set of C functions that simplify several common operations. Namely they allow you to change one value in a CGRect without forst storing it in a temp variale.

Here is an example settings the view‘s frame to the parent‘s frame with the size.origin set to 34.

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view.frame = CGRectSetY(parent.frame,34);

Compared to the traditional way of doing this it seems a whole lot more readable and make’s your intention very clear to future readers of the code.

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CGRect childRect = parent.frame;
childRect.origin.y = 34;
view.frame = childRect;

Full set of functions

interface 

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CGRect CGRectSetWidth(CGRect rect, CGFloat width);
CGRect CGRectSetHeight(CGRect rect, CGFloat height);
CGRect CGRectSetSize(CGRect rect, CGSize size);
CGRect CGRectSetX(CGRect rect, CGFloat x);
CGRect CGRectSetY(CGRect rect, CGFloat y);
CGRect CGRectSetOrigin(CGRect rect, CGPoint origin);

implimentation 

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CGRect CGRectSetWidth(CGRect rect, CGFloat width) {
    return CGRectMake(rect.origin.x, rect.origin.y, width, rect.size.height);
}
CGRect CGRectSetHeight(CGRect rect, CGFloat height) {
    return CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, height);
}
CGRect CGRectSetSize(CGRect rect, CGSize size) {
    return CGRectMake(rect.origin.x, rect.origin.y, size.width, size.height);
}
CGRect CGRectSetX(CGRect rect, CGFloat x) {
    return CGRectMake(x, rect.origin.y, rect.size.width, rect.size.height);
}
CGRect CGRectSetY(CGRect rect, CGFloat y) {
    return CGRectMake(rect.origin.x, y, rect.size.width, rect.size.height);
}
CGRect CGRectSetOrigin(CGRect rect, CGPoint origin) {
    return CGRectMake(origin.x, origin.y, rect.size.width, rect.size.height);
}