Enum SizeConstraint

pub enum SizeConstraint {
    Free,
    Full,
    Fixed(usize),
    AtMost(usize),
    AtLeast(usize),
}

Single-dimensional constraint on a view size.

This describes a possible behaviour for a ResizedView.

Variants

Free

No constraint imposed, the child view’s response is used.

Full

Tries to take all available space, no matter what the child needs.

Fixed(usize)

Always return the included size, no matter what the child needs.

AtMost(usize)

Returns the minimum of the included value and the child view’s size.

AtLeast(usize)

Returns the maximum of the included value and the child view’s size.

Implementations

impl SizeConstraint

pub fn available(self, available: usize) -> usize

Returns the size to be given to the child.

When available is offered to the ResizedView.

pub fn result(self, _: (usize, usize)) -> usize

Returns the size the child view should actually use.

When it said it wanted result.

Trait Implementations

impl Clone for SizeConstraint

fn clone(&self) -> SizeConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SizeConstraint

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

Formats the value using the given formatter.

impl Hash for SizeConstraint

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

where __H: Hasher,

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 PartialEq for SizeConstraint

fn eq(&self, other: &SizeConstraint) -> 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 Resolvable for SizeConstraint

fn from_config( config: &Value, context: &Context, ) -> Result<SizeConstraint, Error>

where SizeConstraint: Sized,

Build from a config (a JSON value).

fn from_any(any: Box<dyn Any>) -> Option<Self>

where Self: Sized + Any,

Build from an Any variable.

impl Copy for SizeConstraint

impl Eq for SizeConstraint

impl StructuralPartialEq for SizeConstraint