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/Dart 2

CanvasGradient class

An opaque canvas object representing a gradient.

Created by calling createLinearGradient or createRadialGradient on a CanvasRenderingContext2D object.

Example usage:

var canvas = new CanvasElement(width: 600, height: 600);
var ctx = canvas.context2D;
ctx.clearRect(0, 0, 600, 600);
ctx.save();
// Create radial gradient.
CanvasGradient gradient = ctx.createRadialGradient(0, 0, 0, 0, 0, 600);
gradient.addColorStop(0, '#000');
gradient.addColorStop(1, 'rgb(255, 255, 255)');
// Assign gradients to fill.
ctx.fillStyle = gradient;
// Draw a rectangle with a gradient fill.
ctx.fillRect(0, 0, 600, 600);
ctx.save();
document.body.children.add(canvas);

See also:

Annotations
  • @Native("CanvasGradient")

Properties

hashCodeint
read-only, inherited
The hash code for this object. [...]
runtimeTypeType
read-only, inherited
A representation of the runtime type of the object.

Methods

addColorStop(num offset, String color) → void
Adds a color stop to this gradient at the offset. [...]
noSuchMethod(Invocation invocation) → dynamic
inherited
Invoked when a non-existent method or property is accessed. [...]
toString() → String
inherited
Returns a string representation of this object.

Operators

operator ==(dynamic other) → bool
inherited
The equality operator. [...]

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.5.0/dart-html/CanvasGradient-class.html