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BlitterSupport

Struct BlitterSupport 

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pub struct BlitterSupport {
    pub half: bool,
    pub quad: bool,
    pub sextant: bool,
}
Available on crate feature crossterm only.
Expand description

Runtime terminal capability probe (issue #264): read-only Capabilities snapshot plus the Blitter ladder it drives. Diagnostics-only — image rendering routes through the ladder automatically. Image-rendering primitives the terminal can drive, used to build the automatic blitter ladder. Each flag is conservative: when the runtime probe returns no answer the defaults assume only the universally available primitives (half-block + quadrants).

App code is not required to inspect this; it exists for diagnostics and to feed Capabilities::best_blitter.

§Example

let blitters = ui.capabilities().blitters;
// Half-block is available on any ANSI terminal.
assert!(blitters.half);

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§half: bool

upper-half block — available on any ANSI terminal.

§quad: bool

▖▗▘▝ quadrant blocks — available on any Unicode-capable terminal.

§sextant: bool

🬀..🬻 sextants (Unicode 13+) — off by default until a renderer confirms support. This issue wires the capability slot; a sextant renderer is a separate feature.

Trait Implementations§

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impl Clone for BlitterSupport

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fn clone(&self) -> BlitterSupport

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for BlitterSupport

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impl Debug for BlitterSupport

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

Formats the value using the given formatter. Read more
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impl Default for BlitterSupport

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Eq for BlitterSupport

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impl PartialEq for BlitterSupport

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

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

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.