uu

components/tpx-bluetooth-print/print/printerjobs.js

@@ -44,11 +44,10 @@ printerJobs.prototype.printArray = function(array) {
 	return this;
 };
 
-
-printerJobs.prototype.printQrcode = function(content) {
+printerJobs.prototype.printQrcode = function(content, width) {
 
 	if (content) {
-		const cmds = [].concat([27, 97, 1], [29, 118, 48, 0, 30, 0, 240, 0], content, [27, 74, 3], [27, 64]);
+		const cmds = [].concat(...printerUtil.makeImageCode(content, width));
 		this._enqueue(cmds);	
 		this._enqueue(commands.LF);
 	}

components/tpx-bluetooth-print/print/printerutil.js

@@ -82,10 +82,26 @@ function ab2hex(buffer) {
 	return hexArr.join(',')
 }
 
+// 打印图片，需要根据图片宽度算出rate, rate = 图片宽度/imgRateSize
+const imgRateSize = 8 
+
+// 默认240宽度  注意！！ 图片宽度必须是8的倍数
+const makeImageCode = (data, width = 240)=> {
+	//我的图片宽度是240，那么拼接的指令就是[29, 118, 48, 0, 30, 0, 240, 0]
+	//我的图片宽度是160，那么拼接的指令就是[29, 118, 48, 0, 20, 0, 160, 0]
+	//补充一点，打印非二维码的图片，宽度一定要是24的倍数，不然打印也会出现乱码
+	let rate = width / imgRateSize
+	
+	return [
+		[27, 97, 1], [29, 118, 48, 0, 1*rate, 0, 8*rate, 0], data, [27, 74, 3], [27, 64]
+	]
+}
 
 export {
 	inline,
 	fillLine,
 	fillAround,
 	ab2hex,
+	imgRateSize,
+	makeImageCode,
 };

components/tpx-bluetooth-print/print/util.js

@@ -1,3 +1,5 @@
+import { makeImageCode } from "./printerutil.js"
+
 const formatTime = date => {
 	const year = date.getFullYear()
 	const month = date.getMonth() + 1
@@ -46,10 +48,10 @@ function convert8to1(arr) {
 //我的图片宽度是240，那么拼接的指令就是[29, 118, 48, 0, 30, 0, 240, 0]
 //我的图片宽度是160，那么拼接的指令就是[29, 118, 48, 0, 20, 0, 160, 0]
 //补充一点，打印非二维码的图片，宽度一定要是24的倍数，不然打印也会出现乱码
-function toArrayBuffer(res) {
+function toArrayBuffer(res, width) {
 	let arr = convert4to1(res.data);
 	let data = convert8to1(arr);
-	let cmds = [].concat([27, 97, 1], [29, 118, 48, 0, 30, 0, 240, 0], data, [27, 74, 3], [27, 64]);
+	let cmds = [].concat(...makeImageCode(data, width));
 	return new Uint8Array(cmds).buffer;
 }
 

components/tpx-bluetooth-print/tpx-bluetooth-print.vue

@@ -20,8 +20,8 @@ export default {
 	data () {
 		return {
 			canvasId: 'shareCanvas',
-			canvas_width: 240,
-			canvas_height: 240,
+			canvas_width: 480,
+			canvas_height: 480,
 			blueToothData: {
 				deviceId: '',
 				serviceId: '',
@@ -51,7 +51,7 @@ export default {
 			// .setBold(true)
 			// .print(`叫那位非常漂亮的小姐姐送来，其他人送来拒收`)
 			// .print(printerUtil.fillLine())
-			.printQrcode(pic_res)
+			.printQrcode(pic_res, this.canvas_width)
 			// .setSize(1, 1)
 			// .setBold(false)
 			// .print(printerUtil.fillLine('*'))
@@ -157,7 +157,7 @@ export default {
 						// 必须加延迟返回，防止高频率调用
 						setTimeout(()=> {
 							resolve()
-						}, 5)
+						}, 10)
 					},
 					fail:(res)=> {
 						console.log('writeBLECharacteristicValue fail', res.errMsg)