Saturday 29 February 2020

react image color filter

With Canvas, we have one flattened graphic. It’s not multiple elements displayed on top of each other, like it would be if we just used HTML and CSS. Since it’s one thing, we never have to worry about it looking any different than it does right now. And -this part is pretty exciting- there’s a way to save this graphic to be used later.

reference:
node node_modules/react-scripts/scripts/start.js
https://github.com/facebook/create-react-app/issues/8221

css filter
https://codepen.io/joshuajcollinsworth/pen/bKXoRN

react canvas
https://blog.cloudboost.io/using-html5-canvas-with-react-ff7d93f5dc76

canvas filter
https://developer.mozilla.org/en-US/docs/Web/API/CanvasRenderingContext2D/filter

canvas scale
https://stackoverflow.com/questions/23104582/scaling-an-image-to-fit-on-canvas

canvas clear
https://stackoverflow.com/questions/2142535/how-to-clear-the-canvas-for-redrawing

file-saver
https://www.npmjs.com/package/file-saver
http://chuanshuoge2.blogspot.com/2019/01/node-upload-to-cloud-download-from-cloud.html

file upload temporary store
https://medium.com/@650egor/react-30-day-challenge-day-2-image-upload-preview-2d534f8eaaa
https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL


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