Struct MathConstants 

pub struct MathConstants {

    pub script_percent_scale_down: i16,
    pub script_script_percent_scale_down: i16,
    pub delimited_sub_formula_min_height: UfWord,
    pub display_operator_min_height: UfWord,
    pub math_leading: MathValueRecord,
    pub axis_height: MathValueRecord,
    pub accent_base_height: MathValueRecord,
    pub flattened_accent_base_height: MathValueRecord,
    pub subscript_shift_down: MathValueRecord,
    pub subscript_top_max: MathValueRecord,
    pub subscript_baseline_drop_min: MathValueRecord,
    pub superscript_shift_up: MathValueRecord,
    pub superscript_shift_up_cramped: MathValueRecord,
    pub superscript_bottom_min: MathValueRecord,
    pub superscript_baseline_drop_max: MathValueRecord,
    pub sub_superscript_gap_min: MathValueRecord,
    pub superscript_bottom_max_with_subscript: MathValueRecord,
    pub space_after_script: MathValueRecord,
    pub upper_limit_gap_min: MathValueRecord,
    pub upper_limit_baseline_rise_min: MathValueRecord,
    pub lower_limit_gap_min: MathValueRecord,
    pub lower_limit_baseline_drop_min: MathValueRecord,
    pub stack_top_shift_up: MathValueRecord,
    pub stack_top_display_style_shift_up: MathValueRecord,
    pub stack_bottom_shift_down: MathValueRecord,
    pub stack_bottom_display_style_shift_down: MathValueRecord,
    pub stack_gap_min: MathValueRecord,
    pub stack_display_style_gap_min: MathValueRecord,
    pub stretch_stack_top_shift_up: MathValueRecord,
    pub stretch_stack_bottom_shift_down: MathValueRecord,
    pub stretch_stack_gap_above_min: MathValueRecord,
    pub stretch_stack_gap_below_min: MathValueRecord,
    pub fraction_numerator_shift_up: MathValueRecord,
    pub fraction_numerator_display_style_shift_up: MathValueRecord,
    pub fraction_denominator_shift_down: MathValueRecord,
    pub fraction_denominator_display_style_shift_down: MathValueRecord,
    pub fraction_numerator_gap_min: MathValueRecord,
    pub fraction_num_display_style_gap_min: MathValueRecord,
    pub fraction_rule_thickness: MathValueRecord,
    pub fraction_denominator_gap_min: MathValueRecord,
    pub fraction_denom_display_style_gap_min: MathValueRecord,
    pub skewed_fraction_horizontal_gap: MathValueRecord,
    pub skewed_fraction_vertical_gap: MathValueRecord,
    pub overbar_vertical_gap: MathValueRecord,
    pub overbar_rule_thickness: MathValueRecord,
    pub overbar_extra_ascender: MathValueRecord,
    pub underbar_vertical_gap: MathValueRecord,
    pub underbar_rule_thickness: MathValueRecord,
    pub underbar_extra_descender: MathValueRecord,
    pub radical_vertical_gap: MathValueRecord,
    pub radical_display_style_vertical_gap: MathValueRecord,
    pub radical_rule_thickness: MathValueRecord,
    pub radical_extra_ascender: MathValueRecord,
    pub radical_kern_before_degree: MathValueRecord,
    pub radical_kern_after_degree: MathValueRecord,
    pub radical_degree_bottom_raise_percent: i16,
}

Available on crate feature tables only.

MathConstants

Fields

script_percent_scale_down: i16

Percentage of scaling down for level 1 superscripts and subscripts.

script_script_percent_scale_down: i16

Percentage of scaling down for level 2 (scriptScript) superscripts and subscripts.

delimited_sub_formula_min_height: UfWord

Minimum height required for a delimited expression (contained within parentheses, etc.) to be treated as a sub-formula.

display_operator_min_height: UfWord

Minimum height of n-ary operators (such as integral and summation) for formulas in display mode (that is, appearing as standalone page elements, not embedded inline within text).

math_leading: MathValueRecord

White space to be left between math formulas to ensure proper line spacing.

axis_height: MathValueRecord

Axis height of the font.

accent_base_height: MathValueRecord

Maximum (ink) height of accent base that does not require raising the accents.

flattened_accent_base_height: MathValueRecord

Maximum (ink) height of accent base that does not require flattening the accents.

subscript_shift_down: MathValueRecord

The standard shift down applied to subscript elements.

subscript_top_max: MathValueRecord

Maximum allowed height of the (ink) top of subscripts that does not require moving subscripts further down.

subscript_baseline_drop_min: MathValueRecord

Minimum allowed drop of the baseline of subscripts relative to the (ink) bottom of the base.

superscript_shift_up: MathValueRecord

Standard shift up applied to superscript elements.

superscript_shift_up_cramped: MathValueRecord

Standard shift of superscripts relative to the base, in cramped style.

superscript_bottom_min: MathValueRecord

Minimum allowed height of the (ink) bottom of superscripts that does not require moving subscripts further up.

superscript_baseline_drop_max: MathValueRecord

Maximum allowed drop of the baseline of superscripts relative to the (ink) top of the base.

sub_superscript_gap_min: MathValueRecord

Minimum gap between the superscript and subscript ink.

superscript_bottom_max_with_subscript: MathValueRecord

The maximum level to which the (ink) bottom of superscript can be pushed to increase the gap between superscript and subscript, before subscript starts being moved down.

space_after_script: MathValueRecord

Extra white space to be added after each subscript and superscript.

upper_limit_gap_min: MathValueRecord

Minimum gap between the (ink) bottom of the upper limit, and the (ink) top of the base operator.

upper_limit_baseline_rise_min: MathValueRecord

Minimum distance between baseline of upper limit and (ink) top of the base operator.

lower_limit_gap_min: MathValueRecord

Minimum gap between (ink) top of the lower limit, and (ink) bottom of the base operator.

lower_limit_baseline_drop_min: MathValueRecord

Minimum distance between baseline of the lower limit and (ink) bottom of the base operator.

stack_top_shift_up: MathValueRecord

Standard shift up applied to the top element of a stack.

stack_top_display_style_shift_up: MathValueRecord

Standard shift up applied to the top element of a stack in display style.

stack_bottom_shift_down: MathValueRecord

Standard shift down applied to the bottom element of a stack.

stack_bottom_display_style_shift_down: MathValueRecord

Standard shift down applied to the bottom element of a stack in display style.

stack_gap_min: MathValueRecord

Minimum gap between (ink) bottom of the top element of a stack, and the (ink) top of the bottom element.

stack_display_style_gap_min: MathValueRecord

Minimum gap between (ink) bottom of the top element of a stack, and the (ink) top of the bottom element in display style.

stretch_stack_top_shift_up: MathValueRecord

Standard shift up applied to the top element of the stretch stack.

stretch_stack_bottom_shift_down: MathValueRecord

Standard shift down applied to the bottom element of the stretch stack.

stretch_stack_gap_above_min: MathValueRecord

Minimum gap between the ink of the stretched element, and the (ink) bottom of the element above.

stretch_stack_gap_below_min: MathValueRecord

Minimum gap between the ink of the stretched element, and the (ink) top of the element below.

fraction_numerator_shift_up: MathValueRecord

Standard shift up applied to the numerator.

fraction_numerator_display_style_shift_up: MathValueRecord

Standard shift up applied to the numerator in display style.

fraction_denominator_shift_down: MathValueRecord

Standard shift down applied to the denominator.

fraction_denominator_display_style_shift_down: MathValueRecord

Standard shift down applied to the denominator in display style.

fraction_numerator_gap_min: MathValueRecord

Minimum tolerated gap between the (ink) bottom of the numerator and the ink of the fraction bar.

fraction_num_display_style_gap_min: MathValueRecord

Minimum tolerated gap between the (ink) bottom of the numerator and the ink of the fraction bar in display style.

fraction_rule_thickness: MathValueRecord

Thickness of the fraction bar.

fraction_denominator_gap_min: MathValueRecord

Minimum tolerated gap between the ink of the fraction bar and the (ink) top of the denominator.

fraction_denom_display_style_gap_min: MathValueRecord

Minimum tolerated gap between the ink of the fraction bar and the (ink) top of the denominator in display style.

skewed_fraction_horizontal_gap: MathValueRecord

Horizontal distance between the top and bottom elements of a skewed fraction.

skewed_fraction_vertical_gap: MathValueRecord

Vertical distance between the ink of the top and bottom elements of a skewed fraction.

overbar_vertical_gap: MathValueRecord

Distance between the overbar and the (ink) top of he base.

overbar_rule_thickness: MathValueRecord

Thickness of overbar.

overbar_extra_ascender: MathValueRecord

Extra white space reserved above the overbar.

underbar_vertical_gap: MathValueRecord

Distance between underbar and (ink) bottom of the base.

underbar_rule_thickness: MathValueRecord

Thickness of underbar.

underbar_extra_descender: MathValueRecord

Extra white space reserved below the underbar.

radical_vertical_gap: MathValueRecord

Space between the (ink) top of the expression and the bar over it.

radical_display_style_vertical_gap: MathValueRecord

Space between the (ink) top of the expression and the bar over it in display style.

radical_rule_thickness: MathValueRecord

Thickness of the radical rule.

radical_extra_ascender: MathValueRecord

Extra white space reserved above the radical.

radical_kern_before_degree: MathValueRecord

Extra horizontal kern before the degree of a radical, if such is present.

radical_kern_after_degree: MathValueRecord

Negative kern after the degree of a radical, if such is present.

radical_degree_bottom_raise_percent: i16

Height of the bottom of the radical degree, if such is present, in proportion to the ascender of the radical sign.

Implementations

impl MathConstants

pub fn new( script_percent_scale_down: i16, script_script_percent_scale_down: i16, delimited_sub_formula_min_height: UfWord, display_operator_min_height: UfWord, math_leading: MathValueRecord, axis_height: MathValueRecord, accent_base_height: MathValueRecord, flattened_accent_base_height: MathValueRecord, subscript_shift_down: MathValueRecord, subscript_top_max: MathValueRecord, subscript_baseline_drop_min: MathValueRecord, superscript_shift_up: MathValueRecord, superscript_shift_up_cramped: MathValueRecord, superscript_bottom_min: MathValueRecord, superscript_baseline_drop_max: MathValueRecord, sub_superscript_gap_min: MathValueRecord, superscript_bottom_max_with_subscript: MathValueRecord, space_after_script: MathValueRecord, upper_limit_gap_min: MathValueRecord, upper_limit_baseline_rise_min: MathValueRecord, lower_limit_gap_min: MathValueRecord, lower_limit_baseline_drop_min: MathValueRecord, stack_top_shift_up: MathValueRecord, stack_top_display_style_shift_up: MathValueRecord, stack_bottom_shift_down: MathValueRecord, stack_bottom_display_style_shift_down: MathValueRecord, stack_gap_min: MathValueRecord, stack_display_style_gap_min: MathValueRecord, stretch_stack_top_shift_up: MathValueRecord, stretch_stack_bottom_shift_down: MathValueRecord, stretch_stack_gap_above_min: MathValueRecord, stretch_stack_gap_below_min: MathValueRecord, fraction_numerator_shift_up: MathValueRecord, fraction_numerator_display_style_shift_up: MathValueRecord, fraction_denominator_shift_down: MathValueRecord, fraction_denominator_display_style_shift_down: MathValueRecord, fraction_numerator_gap_min: MathValueRecord, fraction_num_display_style_gap_min: MathValueRecord, fraction_rule_thickness: MathValueRecord, fraction_denominator_gap_min: MathValueRecord, fraction_denom_display_style_gap_min: MathValueRecord, skewed_fraction_horizontal_gap: MathValueRecord, skewed_fraction_vertical_gap: MathValueRecord, overbar_vertical_gap: MathValueRecord, overbar_rule_thickness: MathValueRecord, overbar_extra_ascender: MathValueRecord, underbar_vertical_gap: MathValueRecord, underbar_rule_thickness: MathValueRecord, underbar_extra_descender: MathValueRecord, radical_vertical_gap: MathValueRecord, radical_display_style_vertical_gap: MathValueRecord, radical_rule_thickness: MathValueRecord, radical_extra_ascender: MathValueRecord, radical_kern_before_degree: MathValueRecord, radical_kern_after_degree: MathValueRecord, radical_degree_bottom_raise_percent: i16, ) -> Self

Construct a new MathConstants

Trait Implementations

impl Clone for MathConstants

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MathConstants

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

Formats the value using the given formatter.

impl Default for MathConstants

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MathConstants

Available on crate feature serde only.

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MathConstants

impl<'a> FontRead<'a> for MathConstants

fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError>

Read an item, performing validation.

fn read(data: FontData<'a>) -> Result<Self, ReadError>

where Self: FontRead<'a, Args = ()>,

Read an instance of Self from the provided data, performing validation.

impl FontWrite for MathConstants

fn write_into(&self, writer: &mut TableWriter)

Write our data and information about offsets into this TableWriter.

fn table_type(&self) -> TableType

The type of this table.

impl<'a> FromObjRef<MathConstants<'a>> for MathConstants

fn from_obj_ref(obj: &MathConstants<'a>, _: FontData<'_>) -> Self

Convert from to an instance of Self, using the provided data to resolve offsets.

impl<'a> FromTableRef<MathConstants<'a>> for MathConstants

fn from_table_ref(from: &T) -> Self

impl Hash for MathConstants

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 MathConstants

fn cmp(&self, other: &Self) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for MathConstants

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for MathConstants

fn partial_cmp(&self, other: &Self) -> 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 ReadArgs for MathConstants

type Args = ()

impl Serialize for MathConstants

Available on crate feature serde only.

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MathConstants

impl Validate for MathConstants

fn validate_impl(&self, _ctx: &mut ValidationCtx)

Validate this table.

fn validate(&self) -> Result<(), ValidationReport>

Ensure that this table is well-formed, reporting any errors.