Struct cairo::Gradient

pub struct Gradient(/* private fields */);

Implementations

impl Gradient

pub fn add_color_stop_rgb(&self, offset: f64, red: f64, green: f64, blue: f64)

pub fn add_color_stop_rgba( &self, offset: f64, red: f64, green: f64, blue: f64, alpha: f64, )

pub fn color_stop_count(&self) -> Result<isize, Error>

pub fn color_stop_rgba( &self, index: isize, ) -> Result<(f64, f64, f64, f64, f64), Error>

Methods from Deref<Target = Pattern>

pub fn set_user_data<T: 'static>( &self, key: &'static UserDataKey<T>, value: Rc<T>, ) -> Result<(), Error>

Attach user data to self for the given key.

pub fn user_data<T: 'static>( &self, key: &'static UserDataKey<T>, ) -> Option<Rc<T>>

Return the user data previously attached to self with the given key, if any.

pub fn user_data_ptr<T: 'static>( &self, key: &'static UserDataKey<T>, ) -> Option<NonNull<T>>

Return the user data previously attached to self with the given key, if any, without incrementing the reference count.

The pointer is valid when it is returned from this method, until the cairo object that self represents is destroyed or remove_user_data or set_user_data is called with the same key.

pub fn remove_user_data<T: 'static>( &self, key: &'static UserDataKey<T>, ) -> Result<(), Error>

Unattached from self the user data associated with key, if any. If there is no other Rc strong reference, the data is destroyed.

pub fn to_raw_none(&self) -> *mut cairo_pattern_t

pub fn type_(&self) -> PatternType

pub fn reference_count(&self) -> isize

pub fn set_extend(&self, extend: Extend)

pub fn extend(&self) -> Extend

pub fn set_filter(&self, filter: Filter)

pub fn filter(&self) -> Filter

pub fn set_matrix(&self, matrix: Matrix)

pub fn matrix(&self) -> Matrix

pub fn status(&self) -> Result<(), Error>

Trait Implementations

impl AsRef<Gradient> for LinearGradient

fn as_ref(&self) -> &Gradient

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<Gradient> for RadialGradient

fn as_ref(&self) -> &Gradient

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<Pattern> for Gradient

fn as_ref(&self) -> &Pattern

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Gradient

fn clone(&self) -> Gradient

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Gradient

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

Formats the value using the given formatter.

impl Deref for Gradient

type Target = Pattern

The resulting type after dereferencing.

fn deref(&self) -> &Pattern

Dereferences the value.

impl TryFrom<Gradient> for LinearGradient

type Error = Gradient

The type returned in the event of a conversion error.

fn try_from(pattern: Gradient) -> Result<Self, Gradient>

Performs the conversion.

impl TryFrom<Gradient> for RadialGradient

type Error = Gradient

The type returned in the event of a conversion error.

fn try_from(pattern: Gradient) -> Result<Self, Gradient>

Performs the conversion.

impl TryFrom<Pattern> for Gradient

type Error = Pattern

The type returned in the event of a conversion error.

fn try_from(pattern: Pattern) -> Result<Self, Pattern>

Performs the conversion.