82 lines
3.1 KiB
JavaScript
82 lines
3.1 KiB
JavaScript
"use strict";
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exports.id = 6718;
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exports.ids = [6718];
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exports.modules = {
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/***/ 6718:
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/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
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/* harmony export */ __webpack_require__.d(__webpack_exports__, {
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/* harmony export */ "Z": () => (/* binding */ imageInputFileToBase64)
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/* harmony export */ });
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// @ts-check
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/**
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* Upload Image function
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* ------------------------------------------------------------------------------
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* @param {object} params
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* @param {File} params.imageInputFile image input file
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* @param {number} [params.maxWidth] optional maximum width
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* @requires Image {imagePreviewNode} - optional image dispatch node
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* @return object containing image data in base 64 and image name
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*/ async function imageInputFileToBase64({ imageInputFile , maxWidth , }) {
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/**
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* Initialize
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* ------------------------------------------------------------------------------
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*/ /** ********************* Variables */ let imagePreviewNode = document.querySelector(`[data-imagepreview='image']`);
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let imageName = imageInputFile.name.replace(/\..*/, "");
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let imageDataBase64;
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let imageSize;
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let canvas = document.createElement("canvas");
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const MIME_TYPE = imageInputFile.type;
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const QUALITY = 0.95;
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const MAX_WIDTH = maxWidth ? maxWidth : null;
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const MAX_HEIGHT = null;
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const file = imageInputFile; // get the file
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const blobURL = URL.createObjectURL(file);
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const img = new Image();
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/** ********************* Add source to new image */ img.src = blobURL;
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imageDataBase64 = await new Promise((res, rej)=>{
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/** ********************* Handle Errors in loading image */ img.onerror = function() {
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URL.revokeObjectURL(this.src);
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console.log("Cannot load image");
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};
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/** ********************* Handle new image when loaded */ img.onload = function() {
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// @ts-ignore
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URL.revokeObjectURL(this.src);
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if (MAX_WIDTH) {
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const scaleSize = MAX_WIDTH / img.naturalWidth;
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canvas.width = img.naturalWidth < MAX_WIDTH ? img.naturalWidth : MAX_WIDTH;
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canvas.height = img.naturalWidth < MAX_WIDTH ? img.naturalHeight : img.naturalHeight * scaleSize;
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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?.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.querySelectorAll(`[data-imagepreview='image']`).forEach((/** @type {any} */ img)=>{
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img.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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imageSize = await new Promise((res, rej)=>{
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canvas.toBlob((blob)=>{
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res(blob?.size);
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}, MIME_TYPE, QUALITY);
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});
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return {
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imageBase64: imageDataBase64.replace(/.*?base64,/, ""),
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imageBase64Full: imageDataBase64,
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imageName: imageName,
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imageSize: imageSize
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};
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}
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/***/ })
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};
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; |