Added "Paths" collection to Page object.

Added matrix transformation to path operators.

src/UglyToad.PdfPig/Content/Page.cs

@@ -9,6 +9,7 @@
     using Util;
     using Util.JetBrains.Annotations;
     using XObjects;
+    using UglyToad.PdfPig.Geometry;
 
     /// <summary>
     /// Contains the content and provides access to methods of a single page in the <see cref="PdfDocument"/>.
@@ -41,6 +42,11 @@
         /// </summary>
         public IReadOnlyList<Letter> Letters => Content?.Letters ?? new Letter[0];
 
+        /// <summary>
+        /// The set of <see cref="PdfPath"/>s drawn by the PDF content.
+        /// </summary>
+        public List<PdfPath> Paths => Content?.Paths ?? new List<PdfPath>();
+
         /// <summary>
         /// The full text of all characters on the page in the order they are presented in the PDF content.
         /// </summary>

src/UglyToad.PdfPig/Content/PageContent.cs

@@ -5,6 +5,7 @@
     using Graphics.Operations;
     using Tokenization.Scanner;
     using XObjects;
+    using UglyToad.PdfPig.Geometry;
 
     /// <summary>
     /// 
@@ -23,8 +24,9 @@
         internal IReadOnlyList<IGraphicsStateOperation> GraphicsStateOperations { get; }
 
         public IReadOnlyList<Letter> Letters { get; }
+        public List<PdfPath> Paths { get; }
 
-        internal PageContent(IReadOnlyList<IGraphicsStateOperation> graphicsStateOperations, IReadOnlyList<Letter> letters,
+        internal PageContent(IReadOnlyList<IGraphicsStateOperation> graphicsStateOperations, IReadOnlyList<Letter> letters, List<PdfPath> paths,
             IReadOnlyDictionary<XObjectType, List<XObjectContentRecord>> xObjects,
             IPdfTokenScanner pdfScanner,
             XObjectFactory xObjectFactory,
@@ -32,6 +34,7 @@
         {
             GraphicsStateOperations = graphicsStateOperations;
             Letters = letters;
+            Paths = paths;
             this.xObjects = xObjects;
             this.pdfScanner = pdfScanner;
             this.xObjectFactory = xObjectFactory;

src/UglyToad.PdfPig/Geometry/PdfPath.cs

@@ -5,27 +5,29 @@ namespace UglyToad.PdfPig.Geometry
     using System.Collections.Generic;
     using System.Linq;
     using System.Text;
+    using UglyToad.PdfPig.Core;
 
     /// <summary>
     /// A path in a PDF document, used by glyphs and page content.
     /// </summary>
     public class PdfPath
     {
-        private readonly List<IPathCommand> commands = new List<IPathCommand>();
+        public readonly List<IPathCommand> Commands = new List<IPathCommand>();
         private PdfPoint? currentPosition;
+        internal TransformationMatrix CurrentTransformationMatrix;
 
         internal void MoveTo(decimal x, decimal y)
         {
-            currentPosition = new PdfPoint(x, y);
-            commands.Add(new Move(currentPosition.Value));
+            currentPosition = CurrentTransformationMatrix.Transform(new PdfPoint(x, y));
+            Commands.Add(new Move(currentPosition.Value));
         }
 
         internal void LineTo(decimal x, decimal y)
         {
             if (currentPosition.HasValue)
             {
-                var to = new PdfPoint(x, y);
-                commands.Add(new Line(currentPosition.Value, to));
+                var to = CurrentTransformationMatrix.Transform(new PdfPoint(x, y));
+                Commands.Add(new Line(currentPosition.Value, to));
                 currentPosition = to;
             }
             else
@@ -40,9 +42,9 @@ namespace UglyToad.PdfPig.Geometry
         {
             if (currentPosition.HasValue)
             {
-                var to = new PdfPoint(x3, y3);
-                commands.Add(new BezierCurve(currentPosition.Value,
-                    new PdfPoint(x1, y1), new PdfPoint(x2, y2), to));
+                var to = CurrentTransformationMatrix.Transform(new PdfPoint(x3, y3));
+                Commands.Add(new BezierCurve(currentPosition.Value,
+                    CurrentTransformationMatrix.Transform(new PdfPoint(x1, y1)), CurrentTransformationMatrix.Transform(new PdfPoint(x2, y2)), to));
                 currentPosition = to;
             }
             else
@@ -55,12 +57,12 @@ namespace UglyToad.PdfPig.Geometry
 
         internal void ClosePath()
         {
-            commands.Add(new Close());
+            Commands.Add(new Close());
         }
 
         internal PdfRectangle? GetBoundingRectangle()
         {
-            if (commands.Count == 0)
+            if (Commands.Count == 0)
             {
                 return null;
             }
@@ -71,7 +73,7 @@ namespace UglyToad.PdfPig.Geometry
             var minY = decimal.MaxValue;
             var maxY = decimal.MinValue;
 
-            foreach (var command in commands)
+            foreach (var command in Commands)
             {
                 var rect = command.GetBoundingRectangle();
                 if (rect == null)
@@ -106,7 +108,7 @@ namespace UglyToad.PdfPig.Geometry
         internal string ToSvg()
         {
             var builder = new StringBuilder();
-            foreach (var pathCommand in commands)
+            foreach (var pathCommand in Commands)
             {
                 pathCommand.WriteSvg(builder);
             }
@@ -136,7 +138,7 @@ namespace UglyToad.PdfPig.Geometry
             var bbox = GetBoundingRectangle();
             var bboxes = new List<PdfRectangle>();
 
-            foreach (var command in commands)
+            foreach (var command in Commands)
             {
                 var segBbox = command.GetBoundingRectangle();
                 if (segBbox.HasValue)
@@ -153,7 +155,7 @@ namespace UglyToad.PdfPig.Geometry
             return result;
         }
 
-        internal interface IPathCommand
+        public interface IPathCommand
         {
             PdfRectangle? GetBoundingRectangle();
 
@@ -173,7 +175,7 @@ namespace UglyToad.PdfPig.Geometry
             }
         }
 
-        private class Move : IPathCommand
+        public class Move : IPathCommand
         {
             public PdfPoint Location { get; }
 
@@ -193,7 +195,7 @@ namespace UglyToad.PdfPig.Geometry
             }
         }
 
-        private class Line : IPathCommand
+        public class Line : IPathCommand
         {
             public PdfPoint From { get; }
 
@@ -216,7 +218,7 @@ namespace UglyToad.PdfPig.Geometry
             }
         }
 
-        internal class BezierCurve : IPathCommand
+        public class BezierCurve : IPathCommand
         {
             public PdfPoint StartPoint { get; }
 
@@ -379,6 +381,11 @@ namespace UglyToad.PdfPig.Geometry
 
         internal void Rectangle(decimal x, decimal y, decimal width, decimal height)
         {
+            currentPosition = CurrentTransformationMatrix.Transform(new PdfPoint(x, y));
+            LineTo(x + width, y);
+            LineTo(x + width, y + height);
+            LineTo(x, y + height);
+            LineTo(x, y);
         }
     }
 }

src/UglyToad.PdfPig/Graphics/ContentStreamProcessor.cs

@@ -48,7 +48,6 @@
         };
 
         public List<Letter> Letters = new List<Letter>();
-
         public ContentStreamProcessor(PdfRectangle cropBox, IResourceStore resourceStore, UserSpaceUnit userSpaceUnit, PageRotationDegrees rotation, bool isLenientParsing,
             IPdfTokenScanner pdfScanner,
             XObjectFactory xObjectFactory,
@@ -70,7 +69,7 @@
 
             ProcessOperations(operations);
 
-            return new PageContent(operations, Letters, xObjects, pdfScanner, xObjectFactory, isLenientParsing);
+            return new PageContent(operations, Letters, paths, xObjects, pdfScanner, xObjectFactory, isLenientParsing);
         }
 
         private void ProcessOperations(IReadOnlyList<IGraphicsStateOperation> operations)
@@ -267,6 +266,7 @@
         public void BeginSubpath()
         {
             CurrentPath = new PdfPath();
+            CurrentPath.CurrentTransformationMatrix = GetCurrentState().CurrentTransformationMatrix;
         }
 
         public void StrokePath(bool close)
@@ -275,12 +275,21 @@
             {
                 ClosePath();
             }
+            paths.Add(CurrentPath);
+        }
+
+        public void FillPath(bool close)
+        {
+            if (close)
+            {
+                ClosePath();
+            }
+            paths.Add(CurrentPath);
         }
 
         public void ClosePath()
         {
             CurrentPath.ClosePath();
-            paths.Add(CurrentPath);
             CurrentPath = null;
         }
 

src/UglyToad.PdfPig/Graphics/IOperationContext.cs

@@ -82,6 +82,12 @@
         /// <param name="close">Whether to also close the path.</param>
         void StrokePath(bool close);
 
+        /// <summary>
+        /// Fill the current path.
+        /// </summary>
+        /// <param name="close">Whether to also close the path.</param>
+        void FillPath(bool close);
+
         /// <summary>
         /// Close the current path.
         /// </summary>

src/UglyToad.PdfPig/Graphics/Operations/CloseFillPathEvenOddRuleAndStroke.cs

@@ -28,6 +28,7 @@
         /// <inheritdoc />
         public void Run(IOperationContext operationContext)
         {
+            operationContext.FillPath(true);
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/CloseFillPathNonZeroWindingAndStroke.cs

@@ -28,6 +28,7 @@
         /// <inheritdoc />
         public void Run(IOperationContext operationContext)
         {
+            operationContext.FillPath(true);
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/FillPathEvenOddRule.cs

@@ -28,6 +28,7 @@
         /// <inheritdoc />
         public void Run(IOperationContext operationContext)
         {
+            operationContext.FillPath(false);
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/FillPathEvenOddRuleAndStroke.cs

@@ -28,6 +28,7 @@
         /// <inheritdoc />
         public void Run(IOperationContext operationContext)
         {
+            operationContext.FillPath(false);
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/FillPathNonZeroWinding.cs

@@ -29,6 +29,7 @@
         /// <inheritdoc />
         public void Run(IOperationContext operationContext)
         {
+            operationContext.FillPath(false);
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/FillPathNonZeroWindingAndStroke.cs

@@ -28,6 +28,7 @@
         /// <inheritdoc />
         public void Run(IOperationContext operationContext)
         {
+            operationContext.FillPath(false);
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/FillPathNonZeroWindingCompatibility.cs

@@ -29,6 +29,7 @@
         /// <inheritdoc />
         public void Run(IOperationContext operationContext)
         {
+            operationContext.FillPath(false);
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/PathConstruction/AppendRectangle.cs

@@ -52,7 +52,7 @@
         {
             operationContext.BeginSubpath();
             operationContext.CurrentPath.Rectangle(LowerLeft.X, LowerLeft.Y, Width, Height);
-            operationContext.CurrentPath.ClosePath();
+            //operationContext.CurrentPath.ClosePath();
         }
 
         /// <inheritdoc />

src/UglyToad.PdfPig/Graphics/Operations/PathConstruction/BeginNewSubpath.cs

@@ -37,6 +37,7 @@
         {
             operationContext.BeginSubpath();
             operationContext.CurrentPosition = Point;
+            operationContext.CurrentPath.LineTo(Point.X, Point.Y);
         }
 
         /// <inheritdoc />