Handle unicode

Author: baptistejamin

example.pdf

@@ -67,7 +67,7 @@ let myInvoice = new MicroInvoice({
         color  : "primary"
       }, {
         value  : "sed do eiusmod tempor incididunt ut labore et dolore magna.",
-        weight : "regular",
+        weight : "bold",
         color  : "secondary"
       }],
 

examples/index.js

@@ -1,6 +1,7 @@
 "use strict";
 
 const PDFDocument = require("pdfkit");
+const path        = require("path");
 const fs          = require("fs");
 const _merge      = require("lodash.merge");
 const getStream   = require("get-stream");
@@ -23,6 +24,21 @@ module.exports = class Microinvoice {
           marginRight : 30,
           marginTop   : 30
         },
+        fonts : {
+          normal  : {
+            name : "Helvetica"
+          },
+          bold     : {
+            name : "Helvetica-Bold"
+          },
+          fallback : {
+            name : "Noto Sans",
+            path : path.join(
+              __dirname, "../res/fonts/", "NotoSans-Regular.ttf"
+            ),
+            enabled : true
+          }
+        },
         header : {
           backgroundColor : "#F8F8FA",
           height          : 150,
@@ -32,8 +48,7 @@ module.exports = class Microinvoice {
         table : {
           headerColor : "#F8F8FA"
         },
-        font : {
-          family         : "helvetica",
+        text : {
           primaryColor   : "#000100",
           secondaryColor : "#8F8F8F",
           headingSize    : 15,
@@ -91,10 +106,76 @@ module.exports = class Microinvoice {
       seller : {
         height : 0
       },
+      fonts : {
+        fallback : {
+          loaded : false
+        }
+      },
       document : null
     };
+
+    this.specialCharsRegex = /[^\x00-\xFF]/m;
+  }
+
+
+  /**
+   * Load custom fonts
+   *
+   * @private
+   * @return void
+   */
+  loadCustomFonts() {
+    // Register custom fonts
+    if (this.options.style.fonts.normal.path) {
+      this.document.registerFont(
+        this.options.style.fonts.normal.name,
+        this.options.style.fonts.normal.path
+      );
+    }
+
+    if (this.options.style.fonts.bold.path) {
+      this.document.registerFont(
+        this.options.style.fonts.bold.name,
+        this.options.style.fonts.bold.path
+      );
+    }
   }
 
+
+  /**
+   * Load fallback font (unicode chars)
+   *
+   * @private
+   * @return void
+   */
+  getFontOrFallback(type, value) {
+    if (type !== "normal" && type !== "bold") {
+      type = "normal";
+    }
+
+    // Return default font
+    if (this.options.style.fonts.fallback.enabled === false) {
+      return this.options.style.fonts[type].name;
+    }
+
+    // Return default font if not special chars are found
+    if (!this.specialCharsRegex.test((value || "").toString())) {
+      return this.options.style.fonts[type].name;
+    }
+
+    if (this.storage.fonts.fallback.loaded === false) {
+      this.document.registerFont(
+        this.options.style.fonts.fallback.name,
+        this.options.style.fonts.fallback.path
+      );
+      this.storage.fonts.fallback.loaded = true;
+    }
+
+    // Return fallback font
+    return this.options.style.fonts.fallback.name;
+  }
+
+
   /**
    * Generates the header
    *
@@ -133,12 +214,14 @@ module.exports = class Microinvoice {
 
     this.setText(this.options.data.invoice.name, {
       fontSize   : "heading",
-      fontWeight : "bold"
+      fontWeight : "bold",
+      color      : this.options.style.header.regularColor
     });
 
     this.options.data.invoice.header.forEach(line => {
       this.setText(`${line.label}:`, {
         fontWeight : "bold",
+        color      : this.options.style.header.regularColor,
         marginTop  : _fontMargin
       });
 
@@ -153,6 +236,7 @@ module.exports = class Microinvoice {
       _values.forEach((value) => {
         this.setText(value, {
           colorCode : "secondary",
+          color     : this.options.style.header.secondaryColor,
           marginTop : _fontMargin
         });
       });
@@ -213,7 +297,7 @@ module.exports = class Microinvoice {
    * @return void
    */
   generateTableRow(type, columns) {
-    let _fontWeight = "regular";
+    let _fontWeight = "normal";
 
     this.storage.cursor.y += 17;
 
@@ -281,7 +365,7 @@ module.exports = class Microinvoice {
    * @return void
    */
   generateLine() {
-    this.storage.cursor.y += this.options.style.font.regularSize + 2;
+    this.storage.cursor.y += this.options.style.text.regularSize + 2;
 
     this.document
       .strokeColor("#F0F0F0")
@@ -372,7 +456,7 @@ module.exports = class Microinvoice {
 
       this.setText(legal.value, {
         fontWeight : legal.weight,
-        colorCode  : legal.code || "primary",
+        colorCode  : legal.color || "primary",
         align      : "center",
         marginTop  : 10
       });
@@ -423,30 +507,30 @@ module.exports = class Microinvoice {
     let _colorCode     = options.colorCode  || "primary";
     let _fontSize      = options.fontSize   || "regular";
     let _textAlign     = options.align      || "left";
+    let _color         = options.color      || "";
     let _marginTop     = options.marginTop  || 0;
     let _maxWidth      = options.maxWidth;
-    let _color         = "";
     let _fontSizeValue = 0;
 
     this.storage.cursor.y += _marginTop;
 
-    if (_colorCode === "primary") {
-      this.document.fillColor(this.options.style.font.primaryColor);
-    } else {
-      this.document.fillColor(this.options.style.font.secondaryColor);
+    if (!_color) {
+      if (_colorCode === "primary") {
+        this.document.fillColor(this.options.style.text.primaryColor);
+      } else {
+        this.document.fillColor(this.options.style.text.secondaryColor);
+      }
     }
 
     if (_fontSize === "regular") {
-      _fontSizeValue = this.options.style.font.regularSize;
+      _fontSizeValue = this.options.style.text.regularSize;
     } else {
-      _fontSizeValue = this.options.style.font.headingSize;
+      _fontSizeValue = this.options.style.text.headingSize;
     }
 
-    if (_fontWeight === "bold") {
-      this.document.font("Helvetica-Bold");
-    } else {
-      this.document.font("Helvetica");
-    }
+    this.getFontOrFallback(_fontWeight, text);
+
+    this.document.font(this.getFontOrFallback(_fontWeight, text));
 
     this.document.fillColor(_color);
     this.document.fontSize(_fontSizeValue);
@@ -480,6 +564,7 @@ module.exports = class Microinvoice {
       size : "A4"
     });
 
+    this.loadCustomFonts();
     this.generateHeader();
     this.generateDetails("customer");
     this.generateDetails("seller");

lib/index.js

@@ -1,6 +1,6 @@
 {
   "name": "microinvoice",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Fast & elegant PDF invoice generator for Node using PDFKit. No Puppeteer",
   "homepage": "https://github.com/baptistejamin/node-microinvoice",
   "main": "lib/index.js",