Add available dimensions for PdfPageFormat

+# 1.3.4
+* Add available dimensions for PdfPageFormat
+
 # 1.3.3
 * Fix a bug with the RichText Widget
 * Update code to Dart 2.1.0

@@ -66,8 +66,18 @@ class PdfPageFormat {
         marginRight: marginRight ?? this.marginRight);
   }
 
+  /// Total page dimensions
   PdfPoint get dimension => PdfPoint(width, height);
 
+  /// Total page width excluding margins
+  double get availableWidth => width - marginLeft - marginRight;
+
+  /// Total page height excluding margins
+  double get availableHeight => height - marginTop - marginBottom;
+
+  /// Total page dimensions excluding margins
+  PdfPoint get availableDimension => PdfPoint(availableWidth, availableHeight);
+
   PdfPageFormat get landscape =>
       width >= height ? this : copyWith(width: height, height: width);
 
@@ -85,6 +95,6 @@ class PdfPageFormat {
 
   @override
   String toString() {
-    return '${width}x$height';
+    return 'Page ${width}x$height margins:$marginLeft, $marginTop, $marginRight, $marginBottom';
   }
 }

@@ -4,7 +4,7 @@ description: A pdf producer for Dart. It can create pdf files for both web or fl
 homepage: https://github.com/DavBfr/dart_pdf/tree/master/pdf
 repository: https://github.com/DavBfr/dart_pdf
 issue_tracker: https://github.com/DavBfr/dart_pdf/issues
-version: 1.3.3
+version: 1.3.4
 
 environment:
   sdk: ">=2.1.0 <3.0.0"