zng_layout::context

Enum LayoutDirection

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pub enum LayoutDirection {
    LTR,
    RTL,
}
Expand description

Defines the layout flow direction.

This affects inline layout, some Align options and the base text shaping direction.

The contextual value can be read during layout in LayoutMetrics::direction, and it can be set using LayoutMetrics::with_direction. Properties that define a more specific direction value also set this value, for example, a TextDirection property will also set the layout direction.

Note that this does not affect the layout origin, all points are offsets from the top-left corner independent of this value.

Variants§

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LTR

left-to-right.

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RTL

Right-to-left.

Implementations§

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impl LayoutDirection

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pub fn is_ltr(self) -> bool

Matches LTR.

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pub fn is_rtl(self) -> bool

Matches RTL.

Trait Implementations§

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impl Clone for LayoutDirection

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fn clone(&self) -> LayoutDirection

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for LayoutDirection

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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 LayoutDirection

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fn default() -> Self

Default is LTR.

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impl<'de> Deserialize<'de> for LayoutDirection

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl Hash for LayoutDirection

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for LayoutDirection

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

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

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for LayoutDirection

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impl Eq for LayoutDirection

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impl StructuralPartialEq for LayoutDirection

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