修正纯数字长度为奇数位时最后一位无法生成，为下划线的问题

demo/pages/index/index.js

@@ -7,8 +7,8 @@ Page({
         code: '1234567890123456789'
     },
 
-    onLoad: function() {
+    onLoad: function () {
         wxbarcode.barcode('barcode', '1234567890123456789', 680, 200);
-        wxbarcode.qrcode('qrcode', '1234567890123456789', 420, 420);
+        wxbarcode.qrcode('qrcode', '1234567890123456789', 420, 420, '../../imgs/timg.jpg', 80);//img path & img size rpx
     }
 })

demo/project.config.json

@@ -0,0 +1,32 @@
+{
+	"description": "项目配置文件。",
+	"setting": {
+		"urlCheck": true,
+		"es6": true,
+		"postcss": true,
+		"minified": true,
+		"newFeature": true
+	},
+	"compileType": "miniprogram",
+	"libVersion": "1.9.1",
+	"appid": "touristappid",
+	"projectname": "wxbarcode",
+	"condition": {
+		"search": {
+			"current": -1,
+			"list": []
+		},
+		"conversation": {
+			"current": -1,
+			"list": []
+		},
+		"game": {
+			"currentL": -1,
+			"list": []
+		},
+		"miniprogram": {
+			"current": -1,
+			"list": []
+		}
+	}
+}

demo/utils/barcode.js

@@ -37,6 +37,7 @@ exports.code128 = function (ctx, text, width, height) {
     height = parseInt(height);
 
     var codes = stringToCode128(text);
+    console.debug('codes', codes)
 
     var g = new Graphics(ctx, width, height);
 
@@ -67,7 +68,6 @@ exports.code128 = function (ctx, text, width, height) {
 
 
 function stringToCode128(text) {
-
     var barc = {
         currcs: CODESET.C
     };
@@ -145,7 +145,10 @@ function stringToCode128(text) {
             if ((b < 48 || b > 57) && b != CHAR_TILDE)
                 return codeset;
         }
-        return CODESET.C;
+        if (bytes.length % 2 == 0)
+            return CODESET.C;
+        else
+            return CODESET.A;
     }
 
     //chr1 is current byte
@@ -249,44 +252,44 @@ function codeSetAllowedFor(chr) {
     }
 }
 
-var Graphics = function(ctx, width, height) {
+var Graphics = function (ctx, width, height) {
 
     this.width = width;
     this.height = height;
     this.quiet = Math.round(this.width / 40);
-    
-    this.border_size   = 0;
+
+    this.border_size = 0;
     this.padding_width = 0;
 
     this.area = {
-        width : width - this.padding_width * 2 - this.quiet * 2,
+        width: width - this.padding_width * 2 - this.quiet * 2,
         height: height - this.border_size * 2,
-        top   : this.border_size - 4,
-        left  : this.padding_width + this.quiet
+        top: this.border_size - 4,
+        left: this.padding_width + this.quiet
     };
 
     this.ctx = ctx;
     this.fg = "#000000";
     this.bg = "#ffffff";
 
     // fill background
-    this.fillBgRect(0,0, width, height);
+    this.fillBgRect(0, 0, width, height);
 
     // fill center to create border
     this.fillBgRect(0, this.border_size, width, height - this.border_size * 2);
 }
 
 //use native color
-Graphics.prototype._fillRect = function(x, y, width, height, color) {
+Graphics.prototype._fillRect = function (x, y, width, height, color) {
     this.ctx.setFillStyle(color)
     this.ctx.fillRect(x, y, width, height)
 }
 
-Graphics.prototype.fillFgRect = function(x,y, width, height) {
+Graphics.prototype.fillFgRect = function (x, y, width, height) {
     this._fillRect(x, y, width, height, this.fg);
 }
 
-Graphics.prototype.fillBgRect = function(x,y, width, height) {
+Graphics.prototype.fillBgRect = function (x, y, width, height) {
     this._fillRect(x, y, width, height, this.bg);
 }
 

demo/utils/index.js

@@ -2,22 +2,24 @@ var barcode = require('./barcode');
 var qrcode = require('./qrcode');
 
 function convert_length(length) {
-	return Math.round(wx.getSystemInfoSync().windowWidth * length / 750);
+    return Math.round(wx.getSystemInfoSync().windowWidth * length / 750);
 }
 
 function barc(id, code, width, height) {
-	barcode.code128(wx.createCanvasContext(id), code, convert_length(width), convert_length(height))
+    barcode.code128(wx.createCanvasContext(id), code, convert_length(width), convert_length(height))
 }
 
-function qrc(id, code, width, height) {
-	qrcode.api.draw(code, {
-		ctx: wx.createCanvasContext(id),
-		width: convert_length(width),
-		height: convert_length(height)
-	})
+function qrc(id, code, width, height, icoPath, icoSize) {
+    qrcode.api.draw(code, {
+        ctx: wx.createCanvasContext(id),
+        width: convert_length(width),
+        height: convert_length(height),
+    },
+        null, null,
+        icoPath, convert_length(icoSize))
 }
 
 module.exports = {
-	barcode: barc,
-	qrcode: qrc
+    barcode: barc,
+    qrcode: qrc
 }