Gradients

Common Properties

Below are the properties common to all gradient components.

Name	Type	Description
colors	string[]	Colors to be distributed between start and end.
positions?	number[]	The relative positions of colors. If supplied, it must be of the same length as colors.
mode?	TileMode	Can be clamp, repeat, mirror, or decal.
flags?	number	By default, gradients will interpolate their colors in unpremultiplied space and then premultiply each of the results. By setting this to 1, the gradients will premultiply their colors first and then interpolate between them.
transform?	Transforms2d	see transformations.

Linear Gradient

Returns a shader that generates a linear gradient between the two specified points.

Name	Type	Description
start	Point	Start position of the gradient.
end	Point	End position of the gradient.

Example

import React from "react";
import {
  Canvas,
  Rect,
  LinearGradient,
  Skia,
  Shader,
  vec
} from "@shopify/react-native-skia";

export const LinearGradientDemo = () => {
  return (
    <Canvas style={{ flex: 1 }}>
      <Rect x={0} y={0} width={256} height={256}>
        <LinearGradient
          start={vec(0, 0)}
          end={vec(256, 256)}
          colors={["blue", "yellow"]}
        />
      </Rect>
    </Canvas>
  );
};

Result

Radial Gradient

Returns a shader that generates a radial gradient given the center and radius.

Name	Type	Description
c	Point	Center of the gradient.
r	number	Radius of the gradient.

Example

import React from "react";
import {
  Canvas,
  Rect,
  RadialGradient,
  Skia,
  Shader,
  vec
} from "@shopify/react-native-skia";

export const RadialGradientDemo = () => {
  return (
    <Canvas style={{ flex: 1 }}>
      <Rect x={0} y={0} width={256} height={256}>
        <RadialGradient
          c={vec(128, 128)}
          r={128}
          colors={["blue", "yellow"]}
        />
      </Rect>
    </Canvas>
  );
};

Result

Two Point Conical Gradient

Returns a shader that generates a conical gradient given two circles.

Name	Type	Description
start	Point	Center of the start circle.
startR	number	Radius of the start circle.
end	number	Center of the end circle.
endR	number	Radius of the end circle.

Example

import React from "react";
import {
  Canvas,
  Rect,
  TwoPointConicalGradient,
  Skia,
  Shader,
  vec
} from "@shopify/react-native-skia";

export const TwoPointConicalGradientDemo = () => {
  return (
    <Canvas style={{ flex: 1 }}>
      <Rect x={0} y={0} width={256} height={256}>
        <TwoPointConicalGradient
          start={vec(128, 128)}
          startR={128}
          end={vec(128, 16)}
          endR={16}
          colors={["blue", "yellow"]}
        />
      </Rect>
    </Canvas>
  );
};

Result

Sweep Gradient

Returns a shader that generates a sweep gradient given a center.

Name	Type	Description
c	Point	Center of the gradient
start?	number	Start angle in degrees (default is 0).
end?	number	End angle in degrees (default is 360).

Example

import React from "react";
import {
  Canvas,
  Rect,
  SweepGradient,
  Skia,
  Shader,
  vec
} from "@shopify/react-native-skia";

export const SweepGradientDemo = () => {
  return (
    <Canvas style={{ flex: 1 }}>
      <Rect x={0} y={0} width={256} height={256}>
        <SweepGradient
          c={vec(128, 128)}
          colors={["cyan", "magenta", "yellow", "cyan"]}
        />
      </Rect>
    </Canvas>
  );
};

Result