Add options paperSize and margin for pdf

README.md

@@ -107,7 +107,20 @@ Here are the options that can be stored in this file:
         "toc": true,
 
         // Font size for the fiel content
-        "fontSize": 12
+        "fontSize": 12,
+
+        // Paper size for the pdf
+        // Choices are [u’a0’, u’a1’, u’a2’, u’a3’, u’a4’, u’a5’, u’a6’, u’b0’, u’b1’, u’b2’, u’b3’, u’b4’, u’b5’, u’b6’, u’legal’, u’letter’]
+        "paperSize": "a4",
+
+        // Margin (in pts)
+        // Note: 72 pts equals 1 inch
+        "margin": {
+            "right": 62,
+            "left": 62,
+            "top": 36,
+            "bottom": 36
+        }
     }
 }
 ```

lib/generate/ebook/index.js

@@ -30,10 +30,6 @@ Generator.prototype.finish = function() {
     .then(function() {
         var d = Q.defer();
         var format = that.options.extension || path.extname(that.options.output);
-        var pdfOptions = _.defaults(that.options.pdf || {}, {
-            "fontSize": 12,
-            "toc": true
-        });
 
         if (!that.options.cover && fs.existsSync(path.join(that.options.output, "cover.jpg"))) {
             that.options.cover = path.join(that.options.output, "cover.jpg");
@@ -50,14 +46,26 @@ Generator.prototype.finish = function() {
         };
 
         if (format == "pdf") {
+            var pdfOptions = _.defaults(that.options.pdf || {}, {
+                "fontSize": 12,
+                "toc": true,
+                "paperSize": "a4",
+                "margin": {
+                    "right": 62,
+                    "left": 62,
+                    "top": 36,
+                    "bottom": 36
+                }
+            });
+
             _.extend(_options, {
-                "--margin-left": "62",
-                "--margin-right": "62",
-                "--margin-top": "36",
-                "--margin-bottom": "36",
+                "--margin-left": String(pdfOptions.margin.left),
+                "--margin-right": String(pdfOptions.margin.right),
+                "--margin-top": String(pdfOptions.margin.top),
+                "--margin-bottom": String(pdfOptions.margin.bottom),
                 "--pdf-add-toc": Boolean(pdfOptions.toc),
                 "--pdf-default-font-size": String(pdfOptions.fontSize),
-                "--paper-size": "a4",
+                "--paper-size": String(pdfOptions.paperSize),
             });
         }