134 lines
5.2 KiB
JavaScript
134 lines
5.2 KiB
JavaScript
import _extends from "@babel/runtime/helpers/esm/extends";
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import _objectSpread from "@babel/runtime/helpers/esm/objectSpread2";
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import _slicedToArray from "@babel/runtime/helpers/esm/slicedToArray";
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import _objectWithoutProperties from "@babel/runtime/helpers/esm/objectWithoutProperties";
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var _excluded = ["value", "size", "level", "bgColor", "fgColor", "includeMargin", "minVersion", "marginSize", "style", "imageSettings", "boostLevel"];
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import React from 'react';
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import { useQRCode } from "./hooks/useQRCode";
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import { DEFAULT_BACKGROUND_COLOR, DEFAULT_FRONT_COLOR, DEFAULT_NEED_MARGIN, DEFAULT_LEVEL, DEFAULT_MINVERSION, DEFAULT_SIZE, isSupportPath2d, excavateModules, generatePath } from "./utils";
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var QRCodeCanvas = /*#__PURE__*/React.forwardRef(function (props, ref) {
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var value = props.value,
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_props$size = props.size,
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size = _props$size === void 0 ? DEFAULT_SIZE : _props$size,
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_props$level = props.level,
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level = _props$level === void 0 ? DEFAULT_LEVEL : _props$level,
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_props$bgColor = props.bgColor,
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bgColor = _props$bgColor === void 0 ? DEFAULT_BACKGROUND_COLOR : _props$bgColor,
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_props$fgColor = props.fgColor,
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fgColor = _props$fgColor === void 0 ? DEFAULT_FRONT_COLOR : _props$fgColor,
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_props$includeMargin = props.includeMargin,
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includeMargin = _props$includeMargin === void 0 ? DEFAULT_NEED_MARGIN : _props$includeMargin,
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_props$minVersion = props.minVersion,
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minVersion = _props$minVersion === void 0 ? DEFAULT_MINVERSION : _props$minVersion,
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marginSize = props.marginSize,
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style = props.style,
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imageSettings = props.imageSettings,
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boostLevel = props.boostLevel,
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otherProps = _objectWithoutProperties(props, _excluded);
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var imgSrc = imageSettings === null || imageSettings === void 0 ? void 0 : imageSettings.src;
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var _canvas = React.useRef(null);
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var _image = React.useRef(null);
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var setCanvasRef = React.useCallback(function (node) {
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_canvas.current = node;
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if (typeof ref === 'function') {
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ref(node);
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} else if (ref) {
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ref.current = node;
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}
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}, [ref]);
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var _React$useState = React.useState(false),
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_React$useState2 = _slicedToArray(_React$useState, 2),
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setIsImageLoaded = _React$useState2[1];
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var _useQRCode = useQRCode({
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value: value,
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level: level,
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minVersion: minVersion,
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includeMargin: includeMargin,
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marginSize: marginSize,
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imageSettings: imageSettings,
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size: size,
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boostLevel: boostLevel
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}),
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margin = _useQRCode.margin,
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cells = _useQRCode.cells,
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numCells = _useQRCode.numCells,
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calculatedImageSettings = _useQRCode.calculatedImageSettings;
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React.useEffect(function () {
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if (_canvas.current) {
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var canvas = _canvas.current;
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var ctx = canvas.getContext('2d');
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if (!ctx) {
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return;
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}
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var cellsToDraw = cells;
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var image = _image.current;
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var haveImageToRender = calculatedImageSettings != null && image !== null && image.complete && image.naturalHeight !== 0 && image.naturalWidth !== 0;
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if (haveImageToRender) {
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if (calculatedImageSettings.excavation != null) {
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cellsToDraw = excavateModules(cells, calculatedImageSettings.excavation);
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}
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}
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var pixelRatio = window.devicePixelRatio || 1;
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canvas.height = canvas.width = size * pixelRatio;
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var scale = size / numCells * pixelRatio;
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ctx.scale(scale, scale);
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ctx.fillStyle = bgColor;
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ctx.fillRect(0, 0, numCells, numCells);
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ctx.fillStyle = fgColor;
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if (isSupportPath2d) {
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ctx.fill(new Path2D(generatePath(cellsToDraw, margin)));
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} else {
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cells.forEach(function (row, rdx) {
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row.forEach(function (cell, cdx) {
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if (cell) {
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ctx.fillRect(cdx + margin, rdx + margin, 1, 1);
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}
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});
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});
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}
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if (calculatedImageSettings) {
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ctx.globalAlpha = calculatedImageSettings.opacity;
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}
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if (haveImageToRender) {
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ctx.drawImage(image, calculatedImageSettings.x + margin, calculatedImageSettings.y + margin, calculatedImageSettings.w, calculatedImageSettings.h);
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}
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}
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});
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React.useEffect(function () {
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setIsImageLoaded(false);
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}, [imgSrc]);
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var canvasStyle = _objectSpread({
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height: size,
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width: size
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}, style);
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var img = null;
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if (imgSrc != null) {
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img = /*#__PURE__*/React.createElement("img", {
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alt: "QR-Code",
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src: imgSrc,
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key: imgSrc,
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style: {
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display: 'none'
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},
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onLoad: function onLoad() {
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setIsImageLoaded(true);
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},
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ref: _image
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// when crossOrigin is not set, the image will be tainted
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// and the canvas cannot be exported to an image
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,
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crossOrigin: calculatedImageSettings === null || calculatedImageSettings === void 0 ? void 0 : calculatedImageSettings.crossOrigin
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});
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}
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return /*#__PURE__*/React.createElement(React.Fragment, null, /*#__PURE__*/React.createElement("canvas", _extends({
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style: canvasStyle,
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height: size,
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width: size,
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ref: setCanvasRef,
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role: "img"
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}, otherProps)), img);
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});
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if (process.env.NODE_ENV !== 'production') {
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QRCodeCanvas.displayName = 'QRCodeCanvas';
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}
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export { QRCodeCanvas }; |