数据仓库-skeleton-focal-PROSAGA-码农传奇

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skeleton-focal is a Polymer 3 element that provides a focal point for your images.
Allows you to drag the focal point and returns the value in attributes that reflects the selected x and y coordinates in a 0-1 range.

<dom-bind>
  <template>
    <skeleton-focal
      src="https://source.unsplash.com/random/800x400"
      x="{{x}}"
      y="{{y}}"></skeleton-focal>
    <h4>Focal point coordinates</h4>
    <ul>
      <li><strong>X:</strong> [[x]]</li>
      <li><strong>Y:</strong> [[y]]</li>
    </ul>
  </template>
</dom-bind>

Installation

Install skeleton-focal with npm

$ npm install FabricElements/skeleton-focal --save

Usage

Import it into the <head> of your page

<script type="module" src="node_modules/@fabricelements/skeleton-focal/skeleton-focal.js"></script>

Example: basic usage

<skeleton-focal src="image.jpg" x="{{x}}" y="{{y}}"></skeleton-focal>

src (string) - The URL of an image.
x (number) - attribute that reflects the selected x coordinate in a 0-1 range.
y (number) - attribute that reflects the selected y coordinate in a 0-1 range.

Other attributes

loaded (boolean) - Read-only value that is true when the image is loaded.
crossorigin (string) - CORS enabled images support: https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image
placeholder (string) - This image will be used as a background/placeholder until the src image has loaded. Use of a data-URI for placeholder is encouraged for instant rendering.
preventLoad (boolean) - When true, the image is prevented from loading and any placeholder is shown. This may be useful when a binding to the src property is known to be invalid, to prevent 404 requests.

Contributing

Please check CONTRIBUTING.

License

Released under the BSD 3-Clause License.