去掉图像的二次识别

script.js

@@ -1876,40 +1876,41 @@ function initialize() {
 				console.error(err);
 				if (err) {
 					if (err instanceof ZXing.NotFoundException) {
-						console.debug('Try crop PDC original QR');
-						let cropLeft = 0, cropTop = 0, cropWidth = 300, cropHeight = 300, //裁剪尺寸
-							scale = 3, //放大倍率
-							extraLeft = 100, extraTop = 100, extraRight = 100, extraBottom = 100; //额外增加的宽度
-						let cavans = document.createElement("canvas");
-						cavans.width = cropWidth * scale + extraLeft + extraRight;
-						cavans.height = cropHeight * scale + extraTop + extraBottom;
-						let ctx = cavans.getContext('2d');
-						ctx.fillStyle="white";
-						ctx.fillRect(0, 0, cavans.width, cavans.height);
-
-						ctx.drawImage(img, cropLeft, cropTop, cropWidth, cropHeight, extraLeft, extraTop, cropWidth * scale, cropHeight * scale);
-						//qrReadBox.appendChild(cavans);
-
-						qrcodeReader.decodeFromImageUrl(cavans.toDataURL()).then((result2) => {
-							console.debug('Found QR code!', result2);
-							qrReadBox.qrStr.value = result2.text;
-							qrReadBox.readString.onclick();
-						}).catch((err2) => {
-							console.error(err2);
-							if (err2) {
-								if (err2 instanceof ZXing.NotFoundException) {
-									qrReadBox.info.textContent = 'No QR code found.';
-								}
+						qrReadBox.info.textContent = 'No QR code found.';
+						// console.debug('Try crop PDC original QR');
+						// let cropLeft = 0, cropTop = 0, cropWidth = 300, cropHeight = 300, //裁剪尺寸
+						// 	scale = 3, //放大倍率
+						// 	extraLeft = 100, extraTop = 100, extraRight = 100, extraBottom = 100; //额外增加的宽度
+						// let cavans = document.createElement("canvas");
+						// cavans.width = cropWidth * scale + extraLeft + extraRight;
+						// cavans.height = cropHeight * scale + extraTop + extraBottom;
+						// let ctx = cavans.getContext('2d');
+						// ctx.fillStyle="white";
+						// ctx.fillRect(0, 0, cavans.width, cavans.height);
+
+						// ctx.drawImage(img, cropLeft, cropTop, cropWidth, cropHeight, extraLeft, extraTop, cropWidth * scale, cropHeight * scale);
+						// //qrReadBox.appendChild(cavans);
+
+						// qrcodeReader.decodeFromImageUrl(cavans.toDataURL()).then((result2) => {
+						// 	console.debug('Found QR code!', result2);
+						// 	qrReadBox.qrStr.value = result2.text;
+						// 	qrReadBox.readString.onclick();
+						// }).catch((err2) => {
+						// 	console.error(err2);
+						// 	if (err2) {
+						// 		if (err2 instanceof ZXing.NotFoundException) {
+						// 			qrReadBox.info.textContent = 'No QR code found.';
+						// 		}
 					
-								if (err2 instanceof ZXing.ChecksumException) {
-									qrReadBox.info.textContent = 'A code was found, but it\'s read value was not valid.';
-								}
+						// 		if (err2 instanceof ZXing.ChecksumException) {
+						// 			qrReadBox.info.textContent = 'A code was found, but it\'s read value was not valid.';
+						// 		}
 					
-								if (err2 instanceof ZXing.FormatException) {
-									qrReadBox.info.textContent = 'A code was found, but it was in a invalid format.';
-								}
-							}
-						});
+						// 		if (err2 instanceof ZXing.FormatException) {
+						// 			qrReadBox.info.textContent = 'A code was found, but it was in a invalid format.';
+						// 		}
+						// 	}
+						// });
 					}
 		
 					if (err instanceof ZXing.ChecksumException) {