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Add basic shape support
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‎samples/Synercoding.FileFormats.Pdf.ConsoleTester/Program.cs

Lines changed: 40 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,5 @@
11
using Synercoding.FileFormats.Pdf.Extensions;
2+
using Synercoding.FileFormats.Pdf.LowLevel.Graphics;
23
using Synercoding.Primitives;
34
using Synercoding.Primitives.Extensions;
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using System.IO;
@@ -53,6 +54,45 @@ public static void Main(string[] args)
5354
page.AddImage(eyeStream, new Rectangle(offSet, offSet, width + offSet, height + offSet, Unit.Millimeters));
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}
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})
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// Test shape graphics
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.AddPage(page =>
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{
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page.AddShapes(ctx =>
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{
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ctx.DefaultState(g =>
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{
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g.LineWidth = 1;
65+
g.Fill = null;
66+
g.Stroke = null;
67+
g.Dash = new Dash()
68+
{
69+
Array = new double[0],
70+
Phase = 0
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};
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g.MiterLimit = 10;
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g.LineCap = LineCapStyle.ButtCap;
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g.LineJoin = LineJoinStyle.MiterJoin;
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});
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ctx.NewPath(g => { g.Fill = Colors.Red; g.Stroke = Colors.Black; g.LineWidth = 5; })
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.Move(100, 100)
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.LineTo(200, 100)
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.LineTo(200, 200)
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.LineTo(100, 200);
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ctx.NewPath(g => { g.Fill = Colors.Blue; g.Stroke = null; })
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.Move(50, 50)
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.LineTo(150, 50)
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.LineTo(150, 150)
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.LineTo(50, 150)
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.Close();
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ctx.NewPath(g => { g.Fill = null; g.Stroke = Colors.Yellow; g.LineWidth = 3; g.Dash = new Dash() { Array = new[] { 5d } }; })
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.Move(150, 150)
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.LineTo(250, 150)
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.LineTo(250, 250)
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.LineTo(150, 250)
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.Close();
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});
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})
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// Test placement using matrix
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.AddPage(page =>
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{

‎src/Synercoding.FileFormats.Pdf/Extensions/PdfPageExtensions.cs

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Original file line numberDiff line numberDiff line change
@@ -1,4 +1,7 @@
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using Synercoding.FileFormats.Pdf.Internals;
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using Synercoding.FileFormats.Pdf.LowLevel;
13
using Synercoding.Primitives;
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using System;
25
using System.IO;
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47
namespace Synercoding.FileFormats.Pdf.Extensions
@@ -123,5 +126,30 @@ public static PdfPage AddImage(this PdfPage page, Stream jpgStream, int original
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/// <returns>The same <see cref="PdfPage"/> to chain other calls.</returns>
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public static PdfPage AddImage(this PdfPage page, Stream jpgStream, int originalWidth, int originalHeight, Rectangle rectangle)
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=> page.AddImage(jpgStream, originalWidth, originalHeight, rectangle.AsPlacementMatrix());
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/// <summary>
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/// Add shapes to the pdf page
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/// </summary>
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/// <param name="page">The page to add the shapes to</param>
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/// <param name="paintAction">The action painting the shapes</param>
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/// <returns>The same <see cref="PdfPage"/> to chain other calls.</returns>
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public static PdfPage AddShapes(this PdfPage page, Action<IShapeContext> paintAction)
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=> page.AddShapes(paintAction, static (action, context) => action(context));
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/// <summary>
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/// Add shapes to the pdf page
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/// </summary>
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/// <typeparam name="T">Type of <paramref name="data"/></typeparam>
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/// <param name="page">The page to add the shapes to</param>
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/// <param name="data">Data that can be passed to the <paramref name="paintAction"/></param>
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/// <param name="paintAction">The action painting the shapes</param>
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/// <returns>The same <see cref="PdfPage"/> to chain other calls.</returns>
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public static PdfPage AddShapes<T>(this PdfPage page, T data, Action<T, IShapeContext> paintAction)
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{
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using (var context = new ShapeContext(page.ContentStream))
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paintAction(data, context);
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return page;
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}
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}
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}

‎src/Synercoding.FileFormats.Pdf/IPath.cs

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@@ -0,0 +1,23 @@
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using Synercoding.Primitives;
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namespace Synercoding.FileFormats.Pdf
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{
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public interface IPath
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{
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IPath Move(double x, double y);
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IPath Move(Point point);
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IPath LineTo(double x, double y);
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IPath LineTo(Point point);
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IPath Rectangle(double x, double y, double width, double height);
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IPath Rectangle(Rectangle rectangle);
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IPath CurveTo(double cpX1, double cpY1, double cpX2, double cpY2, double finalX, double finalY);
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IPath CurveTo(Point cp1, Point cp2, Point final);
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IPath CurveToWithStartAnker(double cpX1, double cpY1, double finalX, double finalY);
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IPath CurveToWithStartAnker(Point cp, Point final);
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IPath CurveToWithEndAnker(double cpX1, double cpY1, double finalX, double finalY);
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IPath CurveToWithEndAnker(Point cp, Point final);
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IShapeContext Close();
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22+
}
23+
}

‎src/Synercoding.FileFormats.Pdf/IShapeContext.cs

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using Synercoding.FileFormats.Pdf.LowLevel.Graphics;
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using System;
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4+
namespace Synercoding.FileFormats.Pdf
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{
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public interface IShapeContext
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{
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IShapeContext DefaultState(Action<GraphicsState> configureState);
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IPath NewPath();
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IPath NewPath(Action<GraphicsState> configureState);
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}
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}

‎src/Synercoding.FileFormats.Pdf/LowLevel/ByteSizes.cs renamed to ‎src/Synercoding.FileFormats.Pdf/Internals/ByteSizes.cs

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
1-
using System;
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using System;
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using System.Globalization;
33

4-
namespace Synercoding.FileFormats.Pdf.LowLevel
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namespace Synercoding.FileFormats.Pdf.Internals
55
{
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internal static class ByteSizes
77
{

‎src/Synercoding.FileFormats.Pdf/Internals/Map.cs

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using System.Collections;
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using System.Collections.Generic;
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namespace Synercoding.FileFormats.Pdf.Internals
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{
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internal sealed class Map<T1, T2> : IEnumerable<KeyValuePair<T1, T2>>
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where T1 : notnull
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where T2 : notnull
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{
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private readonly IDictionary<T1, T2> _forward = new Dictionary<T1, T2>();
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private readonly IDictionary<T2, T1> _reverse = new Dictionary<T2, T1>();
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public Map()
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{
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Forward = new Indexer<T1, T2>(_forward);
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Reverse = new Indexer<T2, T1>(_reverse);
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}
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public int Count => _forward.Count;
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public void Add(T1 t1, T2 t2)
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{
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_forward.Add(t1, t2);
24+
_reverse.Add(t2, t1);
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}
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27+
public IEnumerator<KeyValuePair<T1, T2>> GetEnumerator()
28+
{
29+
return _forward.GetEnumerator();
30+
}
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32+
IEnumerator IEnumerable.GetEnumerator()
33+
{
34+
return GetEnumerator();
35+
}
36+
37+
public Indexer<T1, T2> Forward { get; }
38+
public Indexer<T2, T1> Reverse { get; }
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40+
public sealed class Indexer<T3, T4>
41+
where T3 : notnull
42+
where T4 : notnull
43+
{
44+
private readonly IDictionary<T3, T4> _dictionary;
45+
46+
public Indexer(IDictionary<T3, T4> dictionary)
47+
{
48+
_dictionary = dictionary;
49+
}
50+
51+
public T4 this[T3 index]
52+
{
53+
get => _dictionary[index];
54+
set => _dictionary[index] = value;
55+
}
56+
57+
public bool Contains(T3 value)
58+
=> _dictionary.ContainsKey(value);
59+
}
60+
}
61+
}

‎src/Synercoding.FileFormats.Pdf/Internals/Path.cs

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using Synercoding.FileFormats.Pdf.LowLevel;
2+
using Synercoding.FileFormats.Pdf.LowLevel.Graphics;
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using Synercoding.FileFormats.Pdf.LowLevel.Operators.Color;
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using Synercoding.FileFormats.Pdf.LowLevel.Operators.Pathing.Construction;
5+
using Synercoding.FileFormats.Pdf.LowLevel.Operators.Pathing.Painting;
6+
using Synercoding.FileFormats.Pdf.LowLevel.Operators.State;
7+
using Synercoding.Primitives;
8+
using System;
9+
10+
namespace Synercoding.FileFormats.Pdf.Internals
11+
{
12+
internal class Path : IPath
13+
{
14+
private readonly ShapeContext _context;
15+
private readonly ContentStream _contentStream;
16+
17+
public Path(ShapeContext context, ContentStream contentStream, GraphicsState graphicsState)
18+
{
19+
_context = context;
20+
_contentStream = contentStream;
21+
GraphicsState = graphicsState;
22+
23+
_startPath();
24+
}
25+
26+
internal GraphicsState GraphicsState { get; }
27+
28+
private void _startPath()
29+
{
30+
_contentStream.SaveState();
31+
32+
_contentStream
33+
.Write(new LineWidthOperator(GraphicsState.LineWidth))
34+
.Write(new LineCapOperator(GraphicsState.LineCap))
35+
.Write(new LineJoinOperator(GraphicsState.LineJoin))
36+
.Write(new MiterLimitOperator(GraphicsState.MiterLimit))
37+
.Write(new DashOperator(GraphicsState.Dash.Array, GraphicsState.Dash.Phase));
38+
39+
// write graphic state to stream
40+
}
41+
42+
internal void FinishPath()
43+
{
44+
// TODO: set colorspace for stroke and/or fill
45+
46+
if (GraphicsState.Stroke is not null && GraphicsState.Fill is not null)
47+
{
48+
if (GraphicsState.Stroke is GrayColor gs)
49+
_contentStream.Write(new GrayStrokingColorOperator(gs));
50+
else if (GraphicsState.Stroke is RgbColor rs)
51+
_contentStream.Write(new RgbStrokingColorOperator(rs));
52+
else if (GraphicsState.Stroke is CmykColor cs)
53+
_contentStream.Write(new CmykStrokingColorOperator(cs));
54+
else
55+
throw new NotImplementedException($"The color type {GraphicsState.Stroke.GetType().Name} is not implemented.");
56+
57+
if (GraphicsState.Fill is GrayColor gf)
58+
_contentStream.Write(new GrayNonStrokingColorOperator(gf));
59+
else if (GraphicsState.Fill is RgbColor rf)
60+
_contentStream.Write(new RgbNonStrokingColorOperator(rf));
61+
else if (GraphicsState.Fill is CmykColor cf)
62+
_contentStream.Write(new CmykNonStrokingColorOperator(cf));
63+
else
64+
throw new NotImplementedException($"The color type {GraphicsState.Fill.GetType().Name} is not implemented.");
65+
66+
_contentStream.Write(new FillAndStrokeOperator(GraphicsState.FillRule));
67+
}
68+
else if (GraphicsState.Fill is not null)
69+
{
70+
if (GraphicsState.Fill is GrayColor gf)
71+
_contentStream.Write(new GrayNonStrokingColorOperator(gf));
72+
else if (GraphicsState.Fill is RgbColor rf)
73+
_contentStream.Write(new RgbNonStrokingColorOperator(rf));
74+
else if (GraphicsState.Fill is CmykColor cf)
75+
_contentStream.Write(new CmykNonStrokingColorOperator(cf));
76+
else
77+
throw new NotImplementedException($"The color type {GraphicsState.Fill.GetType().Name} is not implemented.");
78+
79+
_contentStream.Write(new FillOperator(GraphicsState.FillRule));
80+
}
81+
else if (GraphicsState.Stroke is not null)
82+
{
83+
if (GraphicsState.Stroke is GrayColor gs)
84+
_contentStream.Write(new GrayStrokingColorOperator(gs));
85+
else if (GraphicsState.Stroke is RgbColor rs)
86+
_contentStream.Write(new RgbStrokingColorOperator(rs));
87+
else if (GraphicsState.Stroke is CmykColor cs)
88+
_contentStream.Write(new CmykStrokingColorOperator(cs));
89+
else
90+
throw new NotImplementedException($"The color type {GraphicsState.Stroke.GetType().Name} is not implemented.");
91+
92+
_contentStream.Write(new StrokeOperator());
93+
}
94+
else
95+
{
96+
_contentStream.Write(new EndPathOperator());
97+
}
98+
99+
_contentStream.RestoreState();
100+
}
101+
102+
public IShapeContext Close()
103+
{
104+
_contentStream.Write(new CloseOperator());
105+
106+
return _context;
107+
}
108+
109+
public IPath CurveTo(double cpX1, double cpY1, double cpX2, double cpY2, double finalX, double finalY)
110+
{
111+
_contentStream.Write(new CubicBezierCurveDualControlPointsOperator(cpX1, cpY1, cpX2, cpY2, finalX, finalY));
112+
return this;
113+
}
114+
115+
public IPath CurveTo(Point cp1, Point cp2, Point final)
116+
{
117+
_contentStream.Write(new CubicBezierCurveDualControlPointsOperator(cp1, cp2, final));
118+
return this;
119+
}
120+
121+
public IPath CurveToWithEndAnker(double cpX, double cpY, double finalX, double finalY)
122+
{
123+
_contentStream.Write(new CubicBezierCurveFinalControlPointsOperator(cpX, cpY, finalX, finalY));
124+
return this;
125+
}
126+
127+
public IPath CurveToWithEndAnker(Point cp, Point final)
128+
{
129+
_contentStream.Write(new CubicBezierCurveFinalControlPointsOperator(cp, final));
130+
return this;
131+
}
132+
133+
public IPath CurveToWithStartAnker(double cpX, double cpY, double finalX, double finalY)
134+
{
135+
_contentStream.Write(new CubicBezierCurveInitialControlPointsOperator(cpX, cpY, finalX, finalY));
136+
return this;
137+
}
138+
139+
public IPath CurveToWithStartAnker(Point cp, Point final)
140+
{
141+
_contentStream.Write(new CubicBezierCurveInitialControlPointsOperator(cp, final));
142+
return this;
143+
}
144+
145+
public IPath LineTo(double x, double y)
146+
{
147+
_contentStream.Write(new LineOperator(x, y));
148+
return this;
149+
}
150+
151+
public IPath LineTo(Point point)
152+
{
153+
_contentStream.Write(new LineOperator(point));
154+
return this;
155+
}
156+
157+
public IPath Move(double x, double y)
158+
{
159+
_contentStream.Write(new MoveOperator(x, y));
160+
return this;
161+
}
162+
163+
public IPath Move(Point point)
164+
{
165+
_contentStream.Write(new MoveOperator(point));
166+
return this;
167+
}
168+
169+
public IPath Rectangle(double x, double y, double width, double height)
170+
{
171+
_contentStream.Write(new RectangleOperator(x, y, width, height));
172+
return this;
173+
}
174+
175+
public IPath Rectangle(Rectangle rectangle)
176+
{
177+
_contentStream.Write(new RectangleOperator(rectangle));
178+
return this;
179+
}
180+
}
181+
}

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