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@canvas/image
Advanced tools
An Image
implementation for usage outside of the browser.
Also exports some helper methods which are available both in Node.js, and in the browser when packaging with Browserify, Webpack, etc.
npm install --save @canvas/image
const fs = require('fs')
const { Image, getImageData, imageFromBuffer, imageFromImageData } = require('@canvas/image')
// Traditional loading
const img = new Image()
img.src = 'image.png'
img.onload = () => {
console.log(img.width)
// => 2
console.log(img.height)
// => 1
console.log(getImageData(img).data)
// => Uint8ClampedArray [ 1, 2, 3, 4, 5, 6, 7, 8 ]
}
// From Buffer
const source = fs.readFileSync('image.png')
imageFromBuffer(source).then((img) => {
console.log(img.width)
// => 2
console.log(img.height)
// => 1
console.log(getImageData(img).data)
// => Uint8ClampedArray [ 1, 2, 3, 4, 5, 6, 7, 8 ]
})
// From ImageData
const data = new ImageData(new Uint8ClampedArray([1, 2, 3, 4, 5, 6, 7, 8]), 2, 1)
imageFromImageData(data).then((img) => {
console.log(img.width)
// => 2
console.log(img.height)
// => 1
console.log(getImageData(img).data)
// => Uint8ClampedArray [ 1, 2, 3, 4, 5, 6, 7, 8 ]
})
getImageData(image)
imageFromBuffer(buffer)
buffer
(Uint8Array
, required)Promise<Image>
imageFromImageData(imageData)
imageData
(ImageData
, required)Promise<Image>
The tests are made to be run against both this implementation and Chrome's implementation to make sure that we behave in the same way. You can run the tests in Chrome by building the test bundle (npm run build
), spinning up a local web server, and then opening test.html
.
FAQs
An `Image` implementation for usage outside of the browser.
The npm package @canvas/image receives a total of 5,595 weekly downloads. As such, @canvas/image popularity was classified as popular.
We found that @canvas/image demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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