Add fonts with different font-weights

src/jspdf.js

@@ -4850,14 +4850,50 @@ function jsPDF(options) {
    * @param {string} postScriptName PDF specification full name for the font.
    * @param {string} id PDF-document-instance-specific label assinged to the font.
    * @param {string} fontStyle Style of the Font.
+   * @param {number || string} fontWeight Weight of the Font.
    * @param {Object} encoding Encoding_name-to-Font_metrics_object mapping.
    * @function
    * @instance
    * @memberof jsPDF#
    * @name addFont
    * @returns {string} fontId
    */
-  API.addFont = function(postScriptName, fontName, fontStyle, encoding) {
+  API.addFont = function(
+    postScriptName,
+    fontName,
+    fontStyle,
+    fontWeight,
+    encoding
+  ) {
+    let encodingOptions = [
+      "StandardEncoding",
+      "MacRomanEncoding",
+      "Identity-H",
+      "WinAnsiEncoding"
+    ];
+    if (arguments[3] && encodingOptions.indexOf(arguments[3]) !== -1) {
+      //IE 11 fix
+      encoding = arguments[3];
+    } else if (arguments[3] && encodingOptions.indexOf(arguments[3]) == -1) {
+      //if weired combination of fontweight and font style throw error
+      if (
+        (fontStyle == "normal" && fontWeight == "bold") ||
+        (fontStyle == "bold" && fontWeight == "normal") ||
+        (fontStyle == "bold" && fontWeight == 400) ||
+        (fontStyle == "normal" && fontWeight == 700)
+      ) {
+        throw new Error("Invalid Combination of fontweight and fontstyle");
+      }
+      if (fontWeight && fontStyle !== fontWeight) {
+        //if fontstyle is normal and fontweight is normal too no need to append the font-weight
+        fontStyle =
+          fontWeight == 400
+            ? "normal"
+            : fontWeight == 700
+            ? "bold"
+            : fontStyle + "" + fontWeight;
+      }
+    }
     encoding = encoding || "Identity-H";
     return addFont.call(this, postScriptName, fontName, fontStyle, encoding);
   };

test/specs/putTotalPages.spec.js

@@ -42,3 +42,46 @@ describe("Module: putTotalPages", () => {
     comparePdf(doc.output(), "customfont.pdf", "putTotalPages");
   });
 });
+
+it("customfont with encoding without passing fontWeight", () => {
+  var PTSans = loadBinaryResource("reference/PTSans.ttf");
+  var doc = new jsPDF({ filters: ["ASCIIHexEncode"], floatPrecision: 2 });
+  var totalPagesExp = "{totalPages}";
+
+  doc.addFileToVFS("PTSans.ttf", PTSans);
+  doc.addFont("PTSans.ttf", "PTSans", "normal" , "Identity-H");
+
+  doc.setFont("PTSans");
+
+  doc.text(10, 10, "Page 1 of {totalPages}");
+  doc.addPage();
+
+  doc.text(10, 10, "Page 2 of {totalPages}");
+
+  if (typeof doc.putTotalPages === "function") {
+    doc.putTotalPages(totalPagesExp);
+  }
+
+  comparePdf(doc.output(), "customfont.pdf", "putTotalPages");
+});
+
+it("customfont with fontweight", () => {
+  var PTSans = loadBinaryResource("reference/PTSans.ttf");
+  var doc = new jsPDF({ filters: ["ASCIIHexEncode"], floatPrecision: 2 });
+  var totalPagesExp = "{totalPages}";
+
+  doc.addFileToVFS("PTSans.ttf", PTSans);
+  doc.addFont("PTSans.ttf", "PTSans", "normal",200, "Identity-H");
+
+  doc.setFont("PTSans",'normal200');
+
+  doc.text(10, 10, "Page 1 of {totalPages}");
+  doc.addPage();
+
+  doc.text(10, 10, "Page 2 of {totalPages}");
+
+  if (typeof doc.putTotalPages === "function") {
+    doc.putTotalPages(totalPagesExp);
+  }
+  comparePdf(doc.output(), "customfont.pdf", "putTotalPages");
+});