From 311e597338adaa07a36467a7f5aa5c5f4a54a660 Mon Sep 17 00:00:00 2001
From: John <jjenko@volian.com>
Date: Wed, 23 Feb 2022 21:03:37 +0000
Subject: [PATCH] C2022-004 Logic to decode ARGB colors and logic to not rotate
 watermarks that are only one or two characters long

---
 PROMS/Volian.Svg.Library/iTextSharp.cs | 67 ++++++++++++++++++++------
 1 file changed, 53 insertions(+), 14 deletions(-)

diff --git a/PROMS/Volian.Svg.Library/iTextSharp.cs b/PROMS/Volian.Svg.Library/iTextSharp.cs
index 04c2055e..1f1f943a 100644
--- a/PROMS/Volian.Svg.Library/iTextSharp.cs
+++ b/PROMS/Volian.Svg.Library/iTextSharp.cs
@@ -1151,6 +1151,38 @@ namespace Volian.Svg.Library
 			get { return _AllowAllWatermarks; }
 			set { _AllowAllWatermarks = value; }
 		}
+		//C2022-004  This will return the system drawing color from either the color name or ARGB values
+		public System.Drawing.Color GetWatermarkColor(string colorDescription)
+		{
+			System.Drawing.Color systemColor;
+			if (colorDescription.StartsWith("[A=")) // if color is ARGB representation, parse out the values
+			{
+				// initialize the ARGB value to white
+				int Alpha = 255;
+				int Red = 255;
+				int Green = 255;
+				int Blue = 255;
+				// The color is formatted as ARGB in a string (i.e. "[A=255, R=157, G=187, B=97]") in the format file
+				string argbColor = colorDescription.Replace("[", "").Replace("]", "").Replace(" ", ""); // remove starting and ending square brackets
+																										// split the string on the commas and find each ARGB value
+				string[] argbSplit = argbColor.Split(',');
+				foreach (string s in argbSplit)
+				{
+					if (s[0] == 'A')
+						Alpha = Convert.ToInt32(s.Substring(2));
+					else if (s[0] == 'R')
+						Red = Convert.ToInt32(s.Substring(2));
+					else if (s[0] == 'G')
+						Green = Convert.ToInt32(s.Substring(2));
+					else if (s[0] == 'B')
+						Blue = Convert.ToInt32(s.Substring(2));
+				}
+				systemColor = System.Drawing.Color.FromArgb(Alpha, Red, Green, Blue);
+			}
+			else
+				systemColor = System.Drawing.Color.FromName(colorDescription); // get from color name that was passed in
+			return systemColor;
+		}
 		private void DrawWatermark(PdfContentByte cb)
 		{
 			if (Watermark == null || Watermark.ToLower().Contains("none") || Watermark == "") return;
@@ -1166,7 +1198,7 @@ namespace Volian.Svg.Library
 				System.Drawing.Drawing2D.Matrix myMatrix = new System.Drawing.Drawing2D.Matrix((float)Math.Cos(a), (float)Math.Sin(a), (float)-Math.Sin(a), (float)Math.Cos(a), 0, cb.PdfDocument.PageSize.Height);
 				cb.Transform(myMatrix);
 			}
-			SvgWatermark myWatermark = new SvgWatermark(cb, Watermark, System.Drawing.Color.FromName(WatermarkColor), .15F);
+			SvgWatermark myWatermark = new SvgWatermark(cb, Watermark, GetWatermarkColor(WatermarkColor), .15F);
 			//myWatermark.SetSquareDotPattern(.7F);
 			myWatermark.Draw();
 			if (_WatermarkLayer != null) cb.EndLayer();
@@ -1408,19 +1440,26 @@ namespace Volian.Svg.Library
 						//g.DrawRectangle(System.Drawing.Pens.Cyan, 0, 0, bnds.Width, bnds.Height);
 					}
 					_WatermarkImage = iTextSharp.text.Image.GetInstance(bmp, System.Drawing.Imaging.ImageFormat.Png);
-					_WatermarkImage.SetAbsolutePosition(72, 72);
-					float H = _ContentByte.PdfWriter.PageSize.Height - 144;
-					float W = _ContentByte.PdfWriter.PageSize.Width - 144;
-					float ratio = bnds.Width / bnds.Height;
-					float W2 = (H - W / ratio) / (ratio - 1 / ratio);
-					float W1 = W - W2;
-					float H1 = (float)(Math.Sqrt(-4*(W1*W2)+H*H)+H)/2;
-					float H2 = H-H1;
-					float Theta = (float) Math.Atan(H1 / W1);
-					float h = H2 / (float) Math.Cos(Theta);
-					float w = H1 / (float) Math.Sin(Theta);
-					_WatermarkImage.Rotation = Theta; // 3.141592653F / 4;
-					_WatermarkImage.ScaleAbsolute(w, h);
+						_WatermarkImage.SetAbsolutePosition(72, 72);
+						float H = _ContentByte.PdfWriter.PageSize.Height - 144;
+						float W = _ContentByte.PdfWriter.PageSize.Width - 144;
+						float ratio = bnds.Width / bnds.Height;
+						float W2 = (H - W / ratio) / (ratio - 1 / ratio);
+						float W1 = W - W2;
+						float H1 = (float)(Math.Sqrt(-4 * (W1 * W2) + H * H) + H) / 2;
+						float H2 = H - H1;
+						float Theta = (float)Math.Atan(H1 / W1);
+						float h = H2 / (float)Math.Cos(Theta);
+						float w = H1 / (float)Math.Sin(Theta);
+					// C2022-004 if the watermark is only one character, don't rotate and scale
+					if (msg.Length > 2)
+					{
+						_WatermarkImage.Rotation = Theta; // 3.141592653F / 4;
+						_WatermarkImage.ScaleAbsolute(w, h);
+					}
+					else
+						_WatermarkImage.ScaleAbsolute(W, H);// C2022-004 if the watermark is only one character, scale with respect to page size
+
 				}
 				return _WatermarkImage;
 			}