Struct UILetterformAwareSizingRule 

#[repr(transparent)]
pub struct UILetterformAwareSizingRule(pub NSInteger);

Available on crate feature UILetterformAwareAdjusting only.

Background

When fonts created with +[UIFont preferredFontForTextStyle:] are used, UILabel, UITextField, and nonscrollable UITextView will increase the height calculated in -sizeThatFits: and -intrinsicContentSize in the presence of tall scripts.

Even with this increase, there will be some extreme ascenders and descenders that extend beyond this height.

Furthermore, this increase only occurs for the text-style fonts, so for non-text-style fonts such cases will be markedly more common.

See also Apple’s documentation

Tuple Fields

0: NSInteger

Implementations

impl UILetterformAwareSizingRule

pub const Typographic: Self

UILetterformAwareSizingRuleTypographic: -sizeThatFits: and -intrinsicContentSize results will work well for typographic alignment of edges and centers of the view frames, but extreme ascenders or descenders in tall scripts may not be accounted for

pub const Oversize: Self

UILetterformAwareSizingRuleOversize: -sizeThatFits: and -intrinsicContentSize results will account for extreme ascenders or descenders in tall scripts, but in such cases might not work well for typographic alignment of top and bottom edges and vertical centers of the view frames

Trait Implementations

impl Clone for UILetterformAwareSizingRule

fn clone(&self) -> UILetterformAwareSizingRule

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UILetterformAwareSizingRule

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Encode for UILetterformAwareSizingRule

const ENCODING: Encoding = NSInteger::ENCODING

The Objective-C type-encoding for this type.

impl Hash for UILetterformAwareSizingRule

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for UILetterformAwareSizingRule

fn cmp(&self, other: &UILetterformAwareSizingRule) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for UILetterformAwareSizingRule

fn eq(&self, other: &UILetterformAwareSizingRule) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for UILetterformAwareSizingRule

fn partial_cmp(&self, other: &UILetterformAwareSizingRule) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl RefEncode for UILetterformAwareSizingRule

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for UILetterformAwareSizingRule

impl Eq for UILetterformAwareSizingRule

impl StructuralPartialEq for UILetterformAwareSizingRule