style::values::specified::calc

Struct CalcLengthPercentage

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pub struct CalcLengthPercentage {
    pub clamping_mode: AllowedNumericType,
    pub has_anchor_function: bool,
    pub node: CalcNode,
}
Expand description

A struct to hold a simplified <length> or <percentage> expression.

In some cases, e.g. DOMMatrix, we support calc(), but reject all the relative lengths, and to_computed_pixel_length_without_context() handles this case. Therefore, if you want to add a new field, please make sure this function work properly.

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§clamping_mode: AllowedNumericType§has_anchor_function: bool

Flag indicating if any anchor function is part of this node. This can be used to skip the traversal of calc node tree for math functions not using any anchor function.

§node: CalcNode

Implementations§

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impl CalcLengthPercentage

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fn to_computed_value_with_zoom<F>( &self, context: &Context<'_>, zoom_fn: F, base_size: FontBaseSize, line_height_base: LineHeightBase, ) -> LengthPercentage
where F: Fn(Length) -> Length,

Compute the value, zooming any absolute units by the zoom function.

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pub fn to_computed_value_zoomed( &self, context: &Context<'_>, base_size: FontBaseSize, line_height_base: LineHeightBase, ) -> LengthPercentage

Compute font-size or line-height taking into account text-zoom if necessary.

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pub fn to_computed_pixel_length_without_context(&self) -> Result<CSSFloat, ()>

Compute the value into pixel length as CSSFloat without context, so it returns Err(()) if there is any non-absolute unit.

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pub fn to_computed_value(&self, context: &Context<'_>) -> LengthPercentage

Compute the calc using the current font-size and line-height. (and without text-zoom).

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fn from_computed_value(computed: &CalcLengthPercentage) -> Self

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impl CalcLengthPercentage

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fn same_unit_length_as(a: &Self, b: &Self) -> Option<(CSSFloat, CSSFloat)>

Trait Implementations§

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impl Clone for CalcLengthPercentage

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fn clone(&self) -> CalcLengthPercentage

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 CalcLengthPercentage

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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 MallocSizeOf for CalcLengthPercentage

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fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.
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impl PartialEq for CalcLengthPercentage

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fn eq(&self, other: &CalcLengthPercentage) -> 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 SpecifiedValueInfo for CalcLengthPercentage

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const SUPPORTED_TYPES: u8 = 0u8

Supported CssTypes by the given value type. Read more
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fn collect_completion_keywords(_f: &mut dyn FnMut(&[&'static str]))

Collect value starting words for the given specified value type. This includes keyword and function names which can appear at the beginning of a value of this type. Read more
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impl ToCss for CalcLengthPercentage

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fn to_css<W>(&self, dest: &mut CssWriter<'_, W>) -> Result
where W: Write,

Serialize self in CSS syntax, writing to dest.
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fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string. Read more
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impl ToShmem for CalcLengthPercentage

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fn to_shmem(&self, builder: &mut SharedMemoryBuilder) -> Result<Self>

Clones this value into a form suitable for writing into a SharedMemoryBuilder. Read more
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impl StructuralPartialEq for CalcLengthPercentage

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

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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Convert
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const ALIGN: usize = _

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type Init = T

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unsafe fn init(init: <T as Pointable>::Init) -> usize

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