Struct gtk::TextMark

#[repr(transparent)]
pub struct TextMark { /* private fields */ }

You may wish to begin by reading the [text widget conceptual overview][TextWidget] which gives an overview of all the objects and data types related to the text widget and how they work together.

A TextMark is like a bookmark in a text buffer; it preserves a position in the text. You can convert the mark to an iterator using TextBufferExt::iter_at_mark(). Unlike iterators, marks remain valid across buffer mutations, because their behavior is defined when text is inserted or deleted. When text containing a mark is deleted, the mark remains in the position originally occupied by the deleted text. When text is inserted at a mark, a mark with “left gravity” will be moved to the beginning of the newly-inserted text, and a mark with “right gravity” will be moved to the end.

Note that “left” and “right” here refer to logical direction (left is the toward the start of the buffer); in some languages such as Hebrew the logically-leftmost text is not actually on the left when displayed.

Marks are reference counted, but the reference count only controls the validity of the memory; marks can be deleted from the buffer at any time with TextBufferExt::delete_mark(). Once deleted from the buffer, a mark is essentially useless.

Marks optionally have names; these can be convenient to avoid passing the TextMark object around.

Marks are typically created using the TextBufferExt::create_mark() function.

Implements

TextMarkExt, glib::ObjectExt

Implementations

impl TextMark

pub const NONE: Option<&'static TextMark> = None

pub fn new(name: Option<&str>, left_gravity: bool) -> TextMark

Creates a text mark. Add it to a buffer using TextBufferExt::add_mark(). If name is None, the mark is anonymous; otherwise, the mark can be retrieved by name using TextBufferExt::mark(). If a mark has left gravity, and text is inserted at the mark’s current location, the mark will be moved to the left of the newly-inserted text. If the mark has right gravity (left_gravity = false), the mark will end up on the right of newly-inserted text. The standard left-to-right cursor is a mark with right gravity (when you type, the cursor stays on the right side of the text you’re typing).

name

mark name or None

left_gravity

whether the mark should have left gravity

Returns

new TextMark

pub fn builder() -> TextMarkBuilder

Creates a new builder-pattern struct instance to construct TextMark objects.

This method returns an instance of TextMarkBuilder which can be used to create TextMark objects.

Trait Implementations

impl Clone for TextMark

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TextMark

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

Formats the value using the given formatter.

impl Default for TextMark

fn default() -> Self

Returns the “default value” for a type.

impl Display for TextMark

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

Formats the value using the given formatter.

impl Hash for TextMark

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,

Feeds a slice of this type into the given Hasher.

impl Ord for TextMark

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

const fn clamp(self, min: Self, max: Self) -> Selfwhere
    Self: PartialOrd<Self>,

Restrict a value to a certain interval.

impl ParentClassIs for TextMark

type Parent = Object

impl<OT: ObjectType> PartialEq<OT> for TextMark

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for TextMark

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

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

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

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

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

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

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

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

const 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 TextMark

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for TextMark