A constraint offered by an ancestor View to a descendant during View::sizeThatSatisfies. More...

#include <View.h>

Public Types
enum	{ ViewConstraintEqual , ViewConstraintMax , ViewConstraintUnspecified }

Data Fields
enum ViewConstraint:: { ... }	mode

int	value
	The constraint value; a size in pixels.

Detailed Description

A constraint offered by an ancestor View to a descendant during View::sizeThatSatisfies.

Definition at line 131 of file View.h.

Member Enumeration Documentation

anonymous enum

Enumerator

ViewConstraintEqual

The offered value is final; the View must resolve to exactly this size.

ViewConstraintMax

The offered value is an upper bound; the View may resolve to any size up to it.

Remarks: Do not use this for a View's own already-resolved frame (e.g. re-deriving a constraint to re-layout a View standalone): a ViewAutoresizingWidth/Height axis whose sizeThatFits value is smaller than that frame would shrink to it, discarding a size a parent previously forced with ViewConstraintEqual. Use ViewConstraintEqual instead to treat an existing frame as authoritative.

ViewConstraintUnspecified

No bound is offered; the ancestor is itself unresolved for this axis.

Definition at line 132 of file View.h.

       {
    ViewConstraintEqual,
 
    ViewConstraintMax,
 
    ViewConstraintUnspecified
  } mode;

enum { ... } ViewConstraint::mode

int ViewConstraint::value

The constraint value; a size in pixels.

Definition at line 157 of file View.h.

The documentation for this struct was generated from the following file: