MMMLayoutUtils

Objective-C

@interface MMMLayoutUtils : NSObject

Swift

class MMMLayoutUtils : NSObject

This is to group a few simple layout helpers.

  • A rect with the given size positioned inside of the target rect in such a way that anchor points of both rects align.

    Anchor points are given relative to the sizes of the corresponding rects, similar to CALayer’s anchorPoint property. For example, CGPointMake(0.5, 0.5) represents a center of any rect; CGPointMake(1, 0.5) means the center point of the right vertical edge.

    Note that the origin of the rect returned is rounded to the nearest pixels (not points!).

    See rectWithSize:inRect:contentMode: for a shortcut supporting UIViewContentMode.

    Declaration

    Objective-C

    + (CGRect)rectWithSize:(CGSize)size
                anchor:(CGPoint)anchor
            withinRect:(CGRect)targetRect
                anchor:(CGPoint)targetAnchor;

    Swift

    class func rect(withSize size: CGSize, anchor: CGPoint, withinRect targetRect: CGRect, anchor targetAnchor: CGPoint) -> CGRect

  • A shortcut for the above method with anchors being the same for both source and target rect. (This way the resulting rect will be always inside of the target one, assuming anchors are within [0; 1] range.)

    Declaration

    Objective-C

    + (CGRect)rectWithSize:(CGSize)size
            withinRect:(CGRect)targetRect
                anchor:(CGPoint)anchor;

    Swift

    class func rect(withSize size: CGSize, withinRect targetRect: CGRect, anchor: CGPoint) -> CGRect

  • A frame for the sourceRect positioned within the targetRect according to standard UIViewContentMode flags related to the layout (i.e. all except UIViewContentModeRedraw).

    Note that the origin of the resulting rectangle is always rounded to the nearest pixel.

    Declaration

    Objective-C

    + (CGRect)rectWithSize:(CGSize)size
            withinRect:(CGRect)targetRect
           contentMode:(UIViewContentMode)contentMode;

    Swift

    class func rect(withSize size: CGSize, withinRect targetRect: CGRect, contentMode: UIView.ContentMode) -> CGRect

  • A frame of the given size with its center at the specified point (assuming the center is defined by the given anchor point).

    Note that the origin of the resulting rectangle is rounded to the nearest pixel boundary.

    Declaration

    Objective-C

    + (CGRect)rectWithSize:(CGSize)size
               atPoint:(CGPoint)center
                anchor:(CGPoint)anchor;

    Swift

    class func rect(withSize size: CGSize, atPoint center: CGPoint, anchor: CGPoint) -> CGRect

  • Same as rectWithSize:center:anchor: with anchor set to (0.5, 0.5).

    Declaration

    Objective-C

    + (CGRect)rectWithSize:(CGSize)size center:(CGPoint)center;

    Swift

    class func rect(withSize size: CGSize, center: CGPoint) -> CGRect