Merge pull request ArthurHub#22 from sergio73/master

Arthur · Arthur · commit 97a0d5cf630a · 2015-03-09T09:18:17.000+02:00
Changes to allow custom sizes if these are not defined in PageSize
diff --git a/Source/HtmlRenderer.PdfSharp/PdfGenerateConfig.cs b/Source/HtmlRenderer.PdfSharp/PdfGenerateConfig.cs
@@ -11,6 +11,7 @@
 // "The Art of War"
 
 using PdfSharp;
+using PdfSharp.Drawing;
 
 namespace TheArtOfDev.HtmlRenderer.PdfSharp
 {
@@ -26,6 +27,11 @@ public sealed class PdfGenerateConfig
         /// </summary>
         private PageSize _pageSize;
 
+        /// <summary>
+        /// if the page size is undefined this allow you to set manually the page size
+        /// </summary>
+        private XSize _xsize;
+
         /// <summary>
         /// the top margin between the page start and the text
         /// </summary>
@@ -58,6 +64,14 @@ public PageSize PageSize
             set { _pageSize = value; }
         }
 
+        /// <summary>
+        /// if the page size is undefined this allow you to set manually the page size
+        /// </summary>
+        public XSize ManualPageSize {
+            get { return _xsize; }
+            set { _xsize = value; }
+        }
+
         /// <summary>
         /// the top margin between the page start and the text
         /// </summary>
@@ -119,5 +133,29 @@ public void SetMargins(int value)
             if (value > -1)
                 _marginBottom = _marginLeft = _marginTop = _marginRight = value;
         }
+
+        // The international definitions are:
+        //   1 inch == 25.4 mm
+        //   1 inch == 72 point
+
+        /// <summary>
+        /// Convert the units passed in milimiters to the units used in PdfSharp
+        /// </summary>
+        /// <param name="width"></param>
+        /// <param name="height"></param>
+        /// <returns></returns>
+        public static XSize MilimitersToUnits(double width, double height) {
+            return new XSize(width / 25.4 * 72, height / 25.4 * 72);
+        }
+
+        /// <summary>
+        /// Convert the units passed in inches to the units used in PdfSharp
+        /// </summary>
+        /// <param name="width"></param>
+        /// <param name="height"></param>
+        /// <returns></returns>
+        public static XSize InchesToUnits(double width, double height) {
+            return new XSize(width * 72, height * 72);
+        }
     }
 }
diff --git a/Source/HtmlRenderer.PdfSharp/PdfGenerator.cs b/Source/HtmlRenderer.PdfSharp/PdfGenerator.cs
@@ -90,8 +90,13 @@ public static PdfDocument GeneratePdf(string html, PdfGenerateConfig config, Css
             // create PDF document to render the HTML into
             var document = new PdfDocument();
             
+            XSize orgPageSize;
             // get the size of each page to layout the HTML in
-            var orgPageSize = PageSizeConverter.ToSize(config.PageSize);
+            if (config.PageSize != PageSize.Undefined)
+                orgPageSize = PageSizeConverter.ToSize(config.PageSize);
+            else
+                orgPageSize = config.ManualPageSize;
+            
             var pageSize = new XSize(orgPageSize.Width - config.MarginLeft - config.MarginRight, orgPageSize.Height - config.MarginTop - config.MarginBottom);
 
             if (!string.IsNullOrEmpty(html))
@@ -118,7 +123,13 @@ public static PdfDocument GeneratePdf(string html, PdfGenerateConfig config, Css
                     while (scrollOffset > -container.ActualSize.Height)
                     {
                         var page = document.AddPage();
-                        page.Size = config.PageSize;
+                        if (config.PageSize != PageSize.Undefined) {
+                            page.Size = config.PageSize;
+                        }else {
+                            page.Height = config.ManualPageSize.Height;
+                            page.Width = config.ManualPageSize.Width;
+                        }
+
                         using (var g = XGraphics.FromPdfPage(page))
                         {
                             g.IntersectClip(new XRect(config.MarginLeft, config.MarginTop, pageSize.Width, pageSize.Height));
