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@electrovir/resizable-image-element

v7.1.5

Published

Arbitrary image resizing to fit within arbitrary dimensions.

Downloads

53

Readme

resizable-image-element

Arbitrary interactive resource resizing to fit within arbitrary dimensions. This original started as an image helper, but now it supports many file types including text, video, audio, etc.

Exports a native web element, VirResizableImage (for use in element-vir) or vir-resizable-image (for use as an HTML tag name) that accepts inputs of max dimensions and imageUrl. The element handles the rest!

  • [x] constrains images to arbitrary dimensions while maintaining aspect ratio
  • [x] works with SVGs and normal images
  • [x] works with SVGs that have <image> elements
  • [x] works with SVGs that rely on <script> elements without giving them access to the main window
  • [x] works with "images" that are actually embedded HTML documents
  • [x] tested in Safari, Chrome, and Firefox
  • [x] fixes missing attributes on SVG images
  • [x] handles viewBox attributes missing on the top SVG (but existing on a nested SVG element)
  • [x] allows for arbitrary manipulation of SVG code to account for errors in the original SVG code
  • [x] handles race conditions between loading the image and determining its size
  • [x] handles the many race conditions between iframe loading and communicating back and forth wit them
  • [x] handles audio files

Example

https://electrovir.github.io/resizable-image-element

Usage

npm i @electrovir/resizable-image-element

Meant for use with element-vir:

import {html} from 'element-vir';
import {VirResizableImage} from '@electrovir/resizable-image-element';

export function createTemplate() {
    return html`
        <${VirResizableImage.assign({
            imageUrl: 'https://example.com/my-image-url',
            max: {
                height: 300,
                width: 600,
            },
            min: {
                height: 100,
                width: 200,
            },
        })}></${VirResizableImage}>
    `;
}

You can also use the tag name vir-resizable-image outside of element-vir but you may have to imperatively assign inputs to make that work.

Loading placeholder

To customize the loading placeholder, use slot="loading" on a child element:

import {html} from 'element-vir';
import {VirResizableImage} from '@electrovir/resizable-image-element';

export function createTemplate() {
    return html`
        <${VirResizableImage.assign({
            imageUrl: 'https://example.com/my-image-url',
        })}>
            <div slot="loading">My custom loading</div>
        </${VirResizableImage}>
    `;
}