Package Exports

@github/image-crop-element

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (@github/image-crop-element) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

<image-crop-element>

This loads an image and creates a crop area that user can modify. An event is fired with x, y, width, and height as the crop area changes.

Installation

$ npm install --save @github/image-crop-element

Usage

Plain

<image-crop src="/avatar.jpg"></image-crop>

Rounded crop area

<image-crop src="/avatar.jpg" rounded></image-crop>

With loading state

<image-crop src="/avatar.jpg">
  <img src="spinner.gif" alt="" data-loading-slot />
</image-crop>

With autoupdate inputs

<image-crop src="/avatar.jpg">
  <input type="hidden" data-image-crop-input="x" name="x">
  <input type="hidden" data-image-crop-input="y" name="y">
  <input type="hidden" data-image-crop-input="width" name="width">
  <input type="hidden" data-image-crop-input="height" name="height">
</image-crop>

Listen to the change event

document.addEventListener('image-crop-change', function (event){
  console.log(
    'Crop area changed.',
    event.detail.x,
    event.detail.y,
    event.detail.width,
    event.detail.height
  )
})

CSS encapsulation

The elements HTML structure is initialized in a Shadow DOM, so it is impossible to apply CSS to it. If you need to change the element's default style for any reason, you should open up a new issue (or a pull request!), describing your use case, and we'll work with you on solving the problem.

Browser support

Browsers without native custom element support require a polyfill. Legacy browsers require various other polyfills. See examples/index.html for details.

Chrome
Firefox
Safari
Microsoft Edge