77 lines
3.2 KiB
JavaScript
77 lines
3.2 KiB
JavaScript
/**
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* # Image Input Element to Base 64
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*/
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export default async function imageInputToBase64({ imageInput, maxWidth, mimeType, }) {
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var _a, _b;
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/**
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* Make https request
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*
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* @description make a request to datasquirel.com
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*/
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try {
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let imagePreviewNode = document.querySelector(`[data-imagepreview='image']`);
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let imageName = (_a = imageInput.files) === null || _a === void 0 ? void 0 : _a[0].name.replace(/\..*/, "");
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let imageDataBase64;
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const MIME_TYPE = mimeType ? mimeType : "image/jpeg";
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const QUALITY = 0.95;
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const MAX_WIDTH = maxWidth ? maxWidth : null;
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const file = (_b = imageInput.files) === null || _b === void 0 ? void 0 : _b[0];
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const blobURL = file ? URL.createObjectURL(file) : undefined;
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const img = new Image();
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if (blobURL) {
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img.src = blobURL;
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imageDataBase64 = await new Promise((res, rej) => {
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/** ********************* Handle Errors in loading image */
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img.onerror = function () {
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URL.revokeObjectURL(this.src);
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window.alert("Cannot load image!");
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};
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img.onload = function (e) {
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const imgEl = e.target;
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URL.revokeObjectURL(imgEl.src);
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const canvas = document.createElement("canvas");
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if (MAX_WIDTH) {
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const scaleSize = MAX_WIDTH / img.naturalWidth;
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canvas.width =
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img.naturalWidth < MAX_WIDTH
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? img.naturalWidth
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: MAX_WIDTH;
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canvas.height =
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img.naturalWidth < MAX_WIDTH
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? img.naturalHeight
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: img.naturalHeight * scaleSize;
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}
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else {
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canvas.width = img.naturalWidth;
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canvas.height = img.naturalHeight;
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}
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const ctx = canvas.getContext("2d");
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ctx === null || ctx === void 0 ? void 0 : ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
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const srcEncoded = canvas.toDataURL(MIME_TYPE, QUALITY);
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if (imagePreviewNode) {
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document
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.querySelectorAll(`[data-imagepreview='image']`)
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.forEach((_img) => {
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const _imgEl = _img;
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_imgEl.src = srcEncoded;
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});
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}
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res(srcEncoded);
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};
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});
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return {
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imageBase64: imageDataBase64 === null || imageDataBase64 === void 0 ? void 0 : imageDataBase64.replace(/.*?base64,/, ""),
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imageBase64Full: imageDataBase64,
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imageName: imageName,
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};
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}
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else {
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return {};
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}
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}
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catch ( /** @type {*} */error) {
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console.log("Image Processing Error! =>", error.message);
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return {};
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}
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}
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