CanvasGradient

NOTE

This component is supported since API version 4. Updates will be marked with a superscript to indicate their earliest API version.

CanvasGradient provides a gradient object.

addColorStop

addColorStop(offset: number, color: string): void

Adds a color stop for the CanvasGradient object based on the specified offset and gradient color.

Parameters

Example

<!-- xxx.hml -->
<div>
<canvas ref="canvas" style="width: 500px; height: 500px; background-color: #ffff00;"></canvas>
</div>

// xxx.js
export default {
  onShow() {
      const el = this.$refs.canvas;
      const ctx = el.getContext('2d');
      const gradient = ctx.createLinearGradient(50, 0, 300, 100);
      gradient.addColorStop(0.0, '#ff0000')
      gradient.addColorStop(0.5, '#ffffff')
      gradient.addColorStop(1.0, '#00ff00')
      ctx.fillStyle = gradient
      ctx.fillRect(0, 0, 300, 300)
  }
}