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svelte-easy-crop

v1.0.7

Published

A Svelte component to crop images with easy interactions

Downloads

3,317

Readme

svelte-easy-crop

A Svelte component to crop images with easy interactions

This is a rewrite of react-easy-crop (https://github.com/ricardo-ch/react-easy-crop).

version Monthly downloads gzip size Build Status MIT License PRs Welcome

svelte-easy-crop Demo

Demo

  • Basic: https://svelte.dev/repl/a6fc511aafd94e428d0bb6670f477abc?version=3.4.4
  • With file upload: https://svelte.dev/repl/11303854cb6247ae99514acad96190b6?version=3.42.4

Features

  • Supports drag and zoom interactions
  • Provides crop dimensions as pixels and percentages
  • Supports any images format (JPEG, PNG, even GIF) as url or base 64 string
  • Mobile friendly

Installation

yarn add svelte-easy-crop

or

npm install svelte-easy-crop --save

Basic usage

The Cropper is styled with position: absolute to take the full space of its parent. Thus, you need to wrap it with an element that uses position: relative or the Cropper will fill the whole page.

<script>
  import Cropper from 'svelte-easy-crop'

  let image = '/images/dog.jpeg'
  let crop = { x: 0, y: 0 }
  let zoom = 1
</script>

<Cropper
 {image}
 bind:crop
 bind:zoom
 on:cropcomplete={e => console.log(e.detail)}
/>

Props

| Prop | Type | Required | Description | | :----------------- | :---------------------------------- | :------: | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | image | string | ✓ | The image to be cropped. | | crop | { x: number, y: number } | ✓ | Position of the image. { x: 0, y: 0 } will center the image under the cropper. | | zoom | number | | Zoom of the image between minZoom and maxZoom. Defaults to 1. | | aspect | number | | Aspect of the cropper. The value is the ratio between its width and its height. The default value is 4/3 | | minZoom | number | | Minimum zoom of the image. Defaults to 1. | | maxZoom | number | | Maximum zoom of the image. Defaults to 3. | | cropShape | 'rect' | 'round' | | Shape of the crop area. Defaults to 'rect'. | | cropSize | { width: number, height: number } | | Size of the crop area (in pixels). If you don't provide it, it will be computed automatically using the aspect prop and the image size. | | showGrid | boolean | | Whether to show or not the grid (third-lines). Defaults to true. | | zoomSpeed | number | | Multiplies the value by which the zoom changes. Defaults to 1. | | crossOrigin | string | | Allows setting the crossOrigin attribute on the image. | | restrictPosition | boolean | | Whether the position of the image should be restricted to the boundaries of the cropper. Useful setting in case of zoom < 1 or if the cropper should preserve all image content while forcing a specific aspect ratio for image throughout the application. Example: https://codesandbox.io/s/1rmqky233q. |

Events

on:cropcomplete

This event is the one you should use to save the cropped area of the image. The detail property is an object with 2 values:

  1. percent: coordinates and dimensions of the cropped area in percentage of the image dimension
  2. pixels: coordinates and dimensions of the cropped area in pixels.

Both arguments have the following shape:

const area = {
  x: number, // x/y are the coordinates of the top/left corner of the cropped area
  y: number,
  width: number, // width of the cropped area
  height: number, // height of the cropped area
}

Development

yarn
yarn dev

Now, open http://localhost:5000 and start hacking!

License

MIT