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https://github.com/nolanlawson/blob-util.git
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f0d58081aa
* remove jsdoc * move to esm * export arrayBufferToBinaryString and binaryStringToArrayBuffer * remove Promise polyfill * don't return Promises unnecessarily * add typescript/typedoc
37 lines
803 B
TypeScript
37 lines
803 B
TypeScript
// TODO: including these in blob-util.ts causes typedoc to generate docs for them,
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// even with --excludePrivate ¯\_(ツ)_/¯
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/** @private */
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export function loadImage (src, crossOrigin) {
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return new Promise(function (resolve, reject) {
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var img = new Image()
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if (crossOrigin) {
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img.crossOrigin = crossOrigin
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}
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img.onload = function () {
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resolve(img)
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}
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img.onerror = reject
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img.src = src
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})
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}
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/** @private */
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export function imgToCanvas (img) {
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var canvas = document.createElement('canvas')
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canvas.width = img.width
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canvas.height = img.height
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// copy the image contents to the canvas
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var context = canvas.getContext('2d')
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context.drawImage(
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img,
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0, 0,
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img.width, img.height,
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0, 0,
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img.width, img.height)
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return canvas
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}
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