Struct CanvasGradient

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

Expand description

The CanvasGradient struct represents an opaque object describing a gradient. It is returned by the methods CanvasRenderingContext2D.createLinearGradient() or CanvasRenderingContext2D.createRadialGradient().

(JavaScript docs)

Implementations§

impl CanvasGradient

pub fn add_color_stop( &self, offset: f64, color: &str, ) -> Result<(), AddColorStopError>

Adds a new stop, defined by an offset and a color, to the gradient. If the offset is not between 0 and 1, an INDEX_SIZE_ERR is returned, if the color can’t be parsed as a CSS , a SYNTAX_ERR is returned.

(JavaScript docs)

Trait Implementations§

impl AsRef<Reference> for CanvasGradient

fn as_ref(&self) -> &Reference

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

impl Clone for CanvasGradient

fn clone(&self) -> CanvasGradient

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

impl Debug for CanvasGradient

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

Formats the value using the given formatter. Read more

impl From<CanvasGradient> for Reference

fn from(value: CanvasGradient) -> Self

Converts to this type from the input type.

impl InstanceOf for CanvasGradient

fn instance_of(reference: &Reference) -> bool

Checks whenever a given Reference if of type Self.

impl PartialEq for CanvasGradient

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

Tests for self and other values to be equal, and is used by ==.

1.0.0 · Source§

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 ReferenceType for CanvasGradient

unsafe fn from_reference_unchecked(reference: Reference) -> Self

Converts a given reference into a concrete reference-like wrapper. Doesn’t do any type checking; highly unsafe to use!

impl<'_r> TryFrom<&'_r Reference> for CanvasGradient

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(reference: &Reference) -> Result<Self, Self::Error>

Performs the conversion.

impl<'_r> TryFrom<&'_r Value> for CanvasGradient

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(value: &Value) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<CanvasGradient> for Reference

type Error = Void

The type returned in the event of a conversion error.

fn try_from(value: CanvasGradient) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Reference> for CanvasGradient

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(reference: Reference) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<Value> for CanvasGradient

type Error = ConversionError

The type returned in the event of a conversion error.

fn try_from(value: Value) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for CanvasGradient

impl JsSerialize for CanvasGradient

impl StructuralPartialEq for CanvasGradient

Auto Trait Implementations§

impl Freeze for CanvasGradient

impl RefUnwindSafe for CanvasGradient

impl Send for CanvasGradient

impl Sync for CanvasGradient

impl Unpin for CanvasGradient

impl UnwindSafe for CanvasGradient

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

fn clone_into(&self, target: &mut T)

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

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.