#[non_exhaustive]
pub enum AttrType {
Show 38 variants Invalid, Language, Family, Style, Weight, Variant, Stretch, Size, FontDesc, Foreground, Background, Underline, Strikethrough, Rise, Shape, Scale, Fallback, LetterSpacing, UnderlineColor, StrikethroughColor, AbsoluteSize, Gravity, GravityHint, FontFeatures, ForegroundAlpha, BackgroundAlpha, AllowBreaks, Show, InsertHyphens, Overline, OverlineColor, LineHeight, AbsoluteLineHeight, TextTransform, Word, Sentence, BaselineShift, FontScale, // some variants omitted
}
Expand description

The AttrType distinguishes between different types of attributes.

Along with the predefined values, it is possible to allocate additional values for custom attributes using register(). The predefined values are given below. The type of structure used to store the attribute is listed in parentheses after the description.

Variants (Non-exhaustive)

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Invalid

does not happen

Language

language (AttrLanguage)

Family

font family name list (AttrString)

Style

font slant style (AttrInt)

Weight

font weight (AttrInt)

Variant

font variant (normal or small caps) (AttrInt)

Stretch

font stretch (AttrInt)

Size

font size in points scaled by PANGO_SCALE (AttrInt)

FontDesc

font description (AttrFontDesc)

Foreground

foreground color (AttrColor)

Background

background color (AttrColor)

Underline

whether the text has an underline (AttrInt)

Strikethrough

whether the text is struck-through (AttrInt)

Rise

baseline displacement (AttrInt)

Shape

shape (AttrShape)

Scale

font size scale factor (AttrFloat)

Fallback

whether fallback is enabled (AttrInt)

LetterSpacing

letter spacing (AttrInt)

UnderlineColor

underline color (AttrColor)

StrikethroughColor

strikethrough color (AttrColor)

AbsoluteSize

font size in pixels scaled by PANGO_SCALE (AttrInt)

Gravity

base text gravity (AttrInt)

GravityHint

gravity hint (AttrInt)

FontFeatures

OpenType font features (AttrFontFeatures). Since 1.38

ForegroundAlpha

foreground alpha (AttrInt). Since 1.38

BackgroundAlpha

background alpha (AttrInt). Since 1.38

AllowBreaks

whether breaks are allowed (AttrInt). Since 1.44

Show

how to render invisible characters (AttrInt). Since 1.44

InsertHyphens

whether to insert hyphens at intra-word line breaks (AttrInt). Since 1.44

Overline

whether the text has an overline (AttrInt). Since 1.46

OverlineColor

overline color (AttrColor). Since 1.46

LineHeight

This is supported on crate feature v1_50 only.

line height factor (AttrFloat). Since: 1.50

AbsoluteLineHeight

This is supported on crate feature v1_50 only.

line height (AttrInt). Since: 1.50

TextTransform

This is supported on crate feature v1_50 only.

Word

This is supported on crate feature v1_50 only.

override segmentation to classify the range of the attribute as a single word (AttrInt). Since 1.50

Sentence

This is supported on crate feature v1_50 only.

override segmentation to classify the range of the attribute as a single sentence (AttrInt). Since 1.50

BaselineShift

This is supported on crate feature v1_50 only.

baseline displacement (AttrInt). Since 1.50

FontScale

This is supported on crate feature v1_50 only.

font-relative size change (AttrInt). Since 1.50

Implementations

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

Value type checker.

Get the contained value from a Value. Read more

Feeds this value into the given Hasher. Read more

Feeds a slice of this type into the given Hasher. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

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

This method tests for !=.

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

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

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

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

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

Returns the type identifier of Self.

Convert a value to a Value.

Returns the type identifer of self. Read more

Type to get the Type from. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

Uses borrowed data to replace owned data, usually by cloning. Read more

Returns a SendValue clone of self.

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.