pub struct LinearGradient { /* private fields */ }
Expand description

A linear gradient shader.

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impl LinearGradient

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pub fn new(
start: Point,
end: Point,
stops: Vec<GradientStop>,
mode: SpreadMode,
transform: Transform
) -> Option<Shader<'static>>

Creates a new linear gradient shader.

Returns Shader::SolidColor when:

  • stops.len() == 1
  • start and end are very close

Returns None when:

  • stops is empty
  • start == end
  • transform is not invertible
Examples found in repository?
examples/linear_gradient.rs (lines 5-14)
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fn main() {
    let mut paint = Paint::default();
    paint.shader = LinearGradient::new(
        Point::from_xy(100.0, 100.0),
        Point::from_xy(900.0, 900.0),
        vec![
            GradientStop::new(0.0, Color::from_rgba8(50, 127, 150, 200)),
            GradientStop::new(1.0, Color::from_rgba8(220, 140, 75, 180)),
        ],
        SpreadMode::Pad,
        Transform::identity(),
    )
    .unwrap();

    let mut pb = PathBuilder::new();
    pb.move_to(60.0, 60.0);
    pb.line_to(160.0, 940.0);
    pb.cubic_to(380.0, 840.0, 660.0, 800.0, 940.0, 800.0);
    pb.cubic_to(740.0, 460.0, 440.0, 160.0, 60.0, 60.0);
    pb.close();
    let path = pb.finish().unwrap();

    let mut pixmap = Pixmap::new(1000, 1000).unwrap();
    pixmap.fill_path(
        &path,
        &paint,
        FillRule::Winding,
        Transform::identity(),
        None,
    );
    pixmap.save_png("image.png").unwrap();
}

Trait Implementations§

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impl Clone for LinearGradient

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fn clone(&self) -> LinearGradient

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
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impl Debug for LinearGradient

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source§

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

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

const: unstable · source§

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source§

fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for Twhere
T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere
U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere
U: TryFrom<T>,

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

The type returned in the event of a conversion error.
const: unstable · source§

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

Performs the conversion.