Struct Emu 

pub struct Emu(pub i64);

EMU（English Metric Unit），所有内部几何计算都使用 i64 形式的 EMU。

EMU 在 OOXML 中是绝对整数，可保证精度无损；库内任何“宽 / 高 / 偏移 / 行高 / 列宽“ 字段均以本类型为内部表示。NewType 包装的 i64 同时：

• 提供 value() / new() 与 f64 单位的双向换算；
• 暴露 + / - / * 等运算符便于几何计算；
• 实现 Copy + Default + Ord，可直接作为 BTreeMap key。

Tuple Fields

0: i64

EMU 数值（可为负）。

Implementations

impl Emu

pub const ZERO: Emu

0 EMU。用于默认值与“无偏移“语义。

pub const fn new(v: i64) -> Emu

直接以 i64 构造。

参数

• v：EMU 数值（可为负）。

示例

use ooxml_core::Emu;
let off = Emu::new(914_400);
assert_eq!(off.value(), 914_400);

pub const fn value(self) -> i64

取内部 i64 值。

pub const fn inches(self) -> f64

转为英寸（f64）。

pub const fn pt(self) -> f64

转为磅（f64）。

pub const fn cm(self) -> f64

转为厘米（f64）。

Trait Implementations

impl Add for Emu

type Output = Emu

The resulting type after applying the + operator.

fn add(self, rhs: Emu) -> Emu

Performs the + operation.

impl Clone for Emu

fn clone(&self) -> Emu

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Emu

impl Debug for Emu

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

Debug 输出同时给出原始 EMU 与换算后的英寸，便于日志阅读。

impl Default for Emu

fn default() -> Emu

Returns the “default value” for a type.

impl Display for Emu

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

Display 形式为 "<n> EMU"，便于错误消息中嵌入。

impl EmuExt for Emu

fn emu(self) -> Emu

恒等映射。

impl Eq for Emu

impl Hash for Emu

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 Mul<i64> for Emu

type Output = Emu

The resulting type after applying the * operator.

fn mul(self, rhs: i64) -> Emu

Performs the * operation.

impl Neg for Emu

type Output = Emu

The resulting type after applying the - operator.

fn neg(self) -> Emu

Performs the unary - operation.

impl Ord for Emu

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

impl PartialEq for Emu

fn eq(&self, other: &Emu) -> 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 PartialOrd for Emu

fn partial_cmp(&self, other: &Emu) -> 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 StructuralPartialEq for Emu

impl Sub for Emu

type Output = Emu

The resulting type after applying the - operator.

fn sub(self, rhs: Emu) -> Emu

Performs the - operation.