Struct pango::Item

pub struct Item(_);

The Item structure stores information about a segment of text.

Implementations

impl Item

pub fn new() -> Item

Creates a new Item structure initialized to default values.

Returns

the newly allocated Item, which should be freed with pango_item_free().

pub fn apply_attrs(&mut self, iter: &mut AttrIterator)

This is supported on crate feature v1_44 only.

Add attributes to a PangoItem. The idea is that you have attributes that don’t affect itemization, such as font features, so you filter them out using AttrList::filter(), itemize your text, then reapply the attributes to the resulting items using this function.

The iter should be positioned before the range of the item, and will be advanced past it. This function is meant to be called in a loop over the items resulting from itemization, while passing the iter to each call.

iter

a AttrIterator

pub fn split(&mut self, split_index: i32, split_offset: i32) -> Option<Item>

Modifies self to cover only the text after split_index, and returns a new item that covers the text before split_index that used to be in self. You can think of split_index as the length of the returned item. split_index may not be 0, and it may not be greater than or equal to the length of self (that is, there must be at least one byte assigned to each item, you can’t create a zero-length item). split_offset is the length of the first item in chars, and must be provided because the text used to generate the item isn’t available, so split() can’t count the char length of the split items itself.

split_index

byte index of position to split item, relative to the start of the item

split_offset

number of chars between start of self and split_index

Returns

new item representing text before split_index, which should be freed with pango_item_free().

impl Item

pub fn offset(&self) -> i32

pub fn length(&self) -> i32

pub fn num_chars(&self) -> i32

pub fn analysis(&self) -> &Analysis

Trait Implementations

impl Clone for Item

fn clone(&self) -> Item

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Item

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

Formats the value using the given formatter.

impl Default for Item

fn default() -> Self

Returns the “default value” for a type.

impl Hash for Item

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, 

Feeds a slice of this type into the given Hasher.

impl Ord for Item

fn cmp(&self, other: &Item) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl PartialEq<Item> for Item

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<Item> for Item

fn partial_cmp(&self, other: &Item) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

This method tests less than (for self and other) and is used by the < operator.

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

This method tests less than or equal to (for self and other) and is used by the <= operator.

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

This method tests greater than (for self and other) and is used by the > operator.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for Item

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for Item

impl StructuralEq for Item

impl StructuralPartialEq for Item