Description

A plugin to add un-recognizable watermark to web-based application.

Build

• npm

npm install
npm run build

• yarn

yarn install
yarn build

Compiled file will be generated in dist folder.

Usage

Construct object and call ".draw()" method, which return the watermark as base64 image/png string.

• Constructor

new IvWatermark(
  [2d context from canva element], // the size of canvas must not be less than the size of watermark
  [Size of watermark], // size must be powers of 2
  [Scale of watermark], // set the scale of watermark, from 2 to 255
  [Text of watermark],
  [Foreground code of watermark]
)

Example

• As script

<script src="ivwatermark.js"></script>
...
<script>
  var cavans = document.createElement('canvas');
  cavans.width = 256;
  cavans.height = 256;
  var watermark = new ivWatermark(cavans.getContext('2d'), 256, 32, 'Watermark', 'rgba(0, 0, 0, 1)');
  var img = watermark.draw()
</script>

Result

• Watermark

* Processed