Uses better page format object

@@ -4,7 +4,7 @@ import 'package:pdf/pdf.dart';
 
 void main() {
   final pdf = new PDFDocument();
-  final page = new PDFPage(pdf, pageFormat: new PDFPageFormat(PDFPageFormat.LETTER));
+  final page = new PDFPage(pdf, pageFormat: PDFPageFormat.LETTER);
   final g = page.getGraphics();
   final font = new PDFFont(pdf);
 

@@ -48,11 +48,9 @@ class PDFPage extends PDFObject {
   /// @see PageFormat#LANDSCAPE
   /// @see PageFormat#REVERSE_LANDSCAPE
   /// @param pageFormat PageFormat describing the page size
-  PDFPage(PDFDocument pdfDocument, {int orientation, this.pageFormat})
-      : super(pdfDocument, "/Page") {
+  PDFPage(PDFDocument pdfDocument, {this.pageFormat}) : super(pdfDocument, "/Page") {
     pdfDocument.pdfPageList.pages.add(this);
-    if (pageFormat == null) pageFormat = new PDFPageFormat();
-    setOrientation(orientation);
+    if (pageFormat == null) pageFormat = PDFPageFormat.A4;
   }
 
   /// This returns a PDFGraphics object, which can then be used to render
@@ -76,25 +74,7 @@ class PDFPage extends PDFObject {
 
   /// Gets the dimensions of the page.
   /// @return a Dimension object containing the width and height of the page.
-  PDFPoint getDimension() => new PDFPoint(pageFormat.getWidth(), pageFormat.getHeight());
-
-  /// Sets the page's orientation.
-  ///
-  /// <p>Normally, this should be done when the page is created, to avoid
-  /// problems.
-  ///
-  /// @param orientation a PageFormat orientation constant:
-  /// PageFormat.PORTRAIT, PageFormat.LANDSACPE or PageFromat.REVERSE_LANDSACPE
-  void setOrientation(int orientation) {
-    pageFormat.setOrientation(orientation);
-  }
-
-  /// Returns the pages orientation:
-  /// PageFormat.PORTRAIT, PageFormat.LANDSACPE or PageFromat.REVERSE_LANDSACPE
-  ///
-  /// @see java.awt.print.PageFormat
-  /// @return current orientation of the page
-  int getOrientation() => pageFormat.getOrientation();
+  PDFPoint getDimension() => new PDFPoint(pageFormat.width, pageFormat.height);
 
   /// This adds an Annotation to the page.
   ///
@@ -173,7 +153,7 @@ class PDFPage extends PDFObject {
 
     // the /MediaBox for the page size
     params["/MediaBox"] = new PDFStream()
-      ..putStringArray([0, 0, pageFormat.getWidth(), pageFormat.getHeight()]);
+      ..putStringArray([0, 0, pageFormat.width, pageFormat.height]);
 
     // Rotation (if not zero)
 //        if(rotate!=0) {
@@ -237,5 +217,5 @@ class PDFPage extends PDFObject {
   /// @param x Coordinate in Java space
   /// @param y Coordinate in Java space
   /// @return array containing the x & y Coordinate in User space
-  PDFPoint cxy(double x, double y) => new PDFPoint(x, pageFormat.getHeight() - y);
+  PDFPoint cxy(double x, double y) => new PDFPoint(x, pageFormat.height - y);
 }

@@ -19,38 +19,19 @@
 part of pdf;
 
 class PDFPageFormat {
-  static const A4 = const [595.28, 841.89];
-  static const A3 = const [841.89, 1190.55];
-  static const A5 = const [420.94, 595.28];
-  static const LETTER = const [612.0, 792.0];
-  static const LEGAL = const [612.0, 1008.0];
+  static const A4 = const PDFPageFormat(595.28, 841.89);
+  static const A3 = const PDFPageFormat(841.89, 1190.55);
+  static const A5 = const PDFPageFormat(420.94, 595.28);
+  static const LETTER = const PDFPageFormat(612.0, 792.0);
+  static const LEGAL = const PDFPageFormat(612.0, 1008.0);
 
   static const PT = 1.0;
   static const IN = 72.0;
   static const CM = IN / 2.54;
   static const MM = IN / 25.4;
 
-  double width;
-  double height;
-  double imageableX = 10.0;
-  double imageableY = 10.0;
-  double imageableWidth = 300.0;
-  double imageableHeight = 300.0;
-  int orientation = 0;
+  final double width;
+  final double height;
 
-  PDFPageFormat([List<double> format]) {
-    if (format == null || format.length != 2) format = A4;
-
-    width = format[0];
-    height = format[1];
-  }
-
-  double getWidth() => width;
-  double getHeight() => height;
-
-  void setOrientation(int orientation) {
-    this.orientation = orientation;
-  }
-
-  int getOrientation() => orientation;
+  const PDFPageFormat(this.width, this.height);
 }

@@ -6,7 +6,7 @@ import "package:test/test.dart";
 void main() {
   test('Pdf1', () {
     var pdf = new PDFDocument(deflate: false);
-    var page = new PDFPage(pdf, pageFormat: new PDFPageFormat(PDFPageFormat.A4));
+    var page = new PDFPage(pdf, pageFormat: PDFPageFormat.A4);
 
     var g = page.getGraphics();
     g.drawLine(30.0, 30.0, 200.0, 200.0);

@@ -16,7 +16,7 @@ void main() {
     i.creator = i.author;
     i.title = "My Title";
     i.subject = "My Subject";
-    var page = new PDFPage(pdf, pageFormat: new PDFPageFormat([500.0, 300.0]));
+    var page = new PDFPage(pdf, pageFormat: const PDFPageFormat(500.0, 300.0));
 
     var g = page.getGraphics();
     g.saveContext();