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Fits an element into another element
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README.md

Published on NPM Build status Published on webcomponents.org

IronFitBehavior

IronFitBehavior positions and fits an element in the bounds of another element and optionally centers it in the window or the other element.

See: Documentation, Demo.

Usage

Installation

npm install --save @polymer/iron-fit-behavior

In a Polymer 3 element

import {PolymerElement} from '@polymer/polymer/polymer-element.js';
import {mixinBehaviors} from '@polymer/polymer/lib/legacy/class.js';
import {html} from '@polymer/polymer/lib/utils/html-tag.js';

import {IronFitBehavior} from '@polymer/iron-fit-behavior/iron-fit-behavior.js';

class SimpleFit extends mixinBehaviors(IronFitBehavior, PolymerElement) {
  static get template() {
    return html`
      <style>
        :host {
          background: lightblue;
          padding: 2px;
        }
      </style>
      verticalAlign: [[verticalAlign]], horizontalAlign: [[horizontalAlign]]
    `;
  }
}

customElements.define('simple-fit', SimpleFit);

Then, in your HTML:

<script type="module" src="./simple-fit.js"></script>

<style>
#container {
  margin: 3em;
  border: 2px dashed gray;
  padding: 3em;
}
</style>

<div id="container">
  The <code>&lt;simple-fit&gt;</code> below will be positioned within this div.
  <simple-fit id="simpleFitElement"
    vertical-align="bottom"
    horizontal-align="left"
    auto-fit-on-attach
  ></simple-fit>
</div>

Contributing

If you want to send a PR to this element, here are the instructions for running the tests and demo locally:

Installation

git clone https://github.com/PolymerElements/iron-fit-behavior
cd iron-fit-behavior
npm install
npm install -g polymer-cli

Running the demo locally

polymer serve --npm
open http://127.0.0.1:<port>/demo/

Running the tests

polymer test --npm
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