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implement text positioning operations and general operations. as well as cm operation.

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This commit is contained in:
Eliot Jones
2017-11-30 23:34:38 +00:00
parent ab5377884f
commit 1de60d7479
13 changed files with 108 additions and 6 deletions
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4
src/UglyToad.Pdf/Core/TransformationMatrix.cs
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@@ -85,7 +85,9 @@
return new PdfPoint(x, y);
}
public static TransformationMatrix FromArray(params decimal[] values)
public static TransformationMatrix FromValues(decimal a, decimal b, decimal c, decimal d, decimal e, decimal f)
=> FromArray(new[] {a, b, c, d, e, f});
public static TransformationMatrix FromArray(decimal[] values)
{
if (values.Length == 9)
{

6
src/UglyToad.Pdf/Graphics/CurrentGraphicsState.cs
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@@ -5,6 +5,7 @@
using Core;
using Geometry;
using Operations;
using Operations.SpecialGraphicsState;
internal class CurrentGraphicsState : IDeepCloneable<CurrentGraphicsState>
{
@@ -13,6 +14,11 @@
/// </summary>
public CurrentFontState FontState { get; set; }
/// <summary>
/// Map positions from user coordinates to device coordinates. Values set by <see cref="ModifyCurrentTransformationMatrix"/> (cm).
/// </summary>
public TransformationMatrix CurrentTransformationText { get; set; } = TransformationMatrix.Identity;
/// <summary>
/// Thickness in user space units of path to be stroked.
/// </summary>

7
src/UglyToad.Pdf/Graphics/Operations/General/SetColorRenderingIntent.cs
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@@ -1,9 +1,16 @@
namespace UglyToad.Pdf.Graphics.Operations.General
{
using Content;
internal class SetColorRenderingIntent : IGraphicsStateOperation
{
public const string Symbol = "ri";
public string Operator => Symbol;
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
}
}
}

7
src/UglyToad.Pdf/Graphics/Operations/General/SetFlatnessTolerance.cs
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@@ -1,5 +1,7 @@
namespace UglyToad.Pdf.Graphics.Operations.General
{
using Content;
internal class SetFlatnessTolerance : IGraphicsStateOperation
{
public const string Symbol = "i";
@@ -13,6 +15,11 @@
Tolerance = tolerance;
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
operationContext.GetCurrentState().Flatness = Tolerance;
}
public override string ToString()
{
return $"{Tolerance} {Symbol}";

6
src/UglyToad.Pdf/Graphics/Operations/General/SetLineCap.cs
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@@ -1,6 +1,7 @@
namespace UglyToad.Pdf.Graphics.Operations.General
{
using System;
using Content;
internal class SetLineCap : IGraphicsStateOperation
{
@@ -21,6 +22,11 @@
Cap = cap;
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
operationContext.GetCurrentState().CapStyle = Cap;
}
public override string ToString()
{
return $"{(int) Cap} {Symbol}";

8
src/UglyToad.Pdf/Graphics/Operations/General/SetLineDashPattern.cs
View File

@@ -1,5 +1,7 @@
namespace UglyToad.Pdf.Graphics.Operations.General
{
using Content;
internal class SetLineDashPattern : IGraphicsStateOperation
{
public const string Symbol = "d";
@@ -8,12 +10,16 @@
public LineDashPattern Pattern { get; }
public SetLineDashPattern(decimal[] array, int phase)
{
Pattern = new LineDashPattern(phase, array);
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
operationContext.GetCurrentState().LineDashPattern = Pattern;
}
public override string ToString()
{
return $"{Pattern.Array} {Pattern.Phase} {Symbol}";

6
src/UglyToad.Pdf/Graphics/Operations/General/SetLineJoin.cs
View File

@@ -1,6 +1,7 @@
namespace UglyToad.Pdf.Graphics.Operations.General
{
using System;
using Content;
internal class SetLineJoin : IGraphicsStateOperation
{
@@ -21,6 +22,11 @@
Join = join;
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
operationContext.GetCurrentState().JoinStyle = Join;
}
public override string ToString()
{
return $"{(int)Join} {Symbol}";

1
src/UglyToad.Pdf/Graphics/Operations/General/SetLineWidth.cs
View File

@@ -18,6 +18,7 @@
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
var currentState = operationContext.GetCurrentState();
currentState.LineWidth = Width;
}

17
src/UglyToad.Pdf/Graphics/Operations/SpecialGraphicsState/ModifyTransformationMatrix.cs → src/UglyToad.Pdf/Graphics/Operations/SpecialGraphicsState/ModifyCurrentTransformationMatrix.cs
View File

@@ -1,8 +1,10 @@
namespace UglyToad.Pdf.Graphics.Operations.SpecialGraphicsState
{
using System;
using Content;
using Core;
internal class ModifyTransformationMatrix : IGraphicsStateOperation
internal class ModifyCurrentTransformationMatrix : IGraphicsStateOperation
{
public const string Symbol = "cm";
@@ -10,7 +12,7 @@
public decimal[] Value { get; }
public ModifyTransformationMatrix(decimal[] value)
public ModifyCurrentTransformationMatrix(decimal[] value)
{
if (value == null)
{
@@ -24,6 +26,17 @@
Value = value;
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
var newMatrix = TransformationMatrix.FromArray(Value);
var ctm = operationContext.GetCurrentState().CurrentTransformationMatrix;
var newCtm = newMatrix.Multiply(ctm);
operationContext.GetCurrentState().CurrentTransformationMatrix = newCtm;
}
public override string ToString()
{
return $"{Value[0]} {Value[1]} {Value[2]} {Value[3]} {Value[4]} {Value[5]} {Symbol}";

15
src/UglyToad.Pdf/Graphics/Operations/TextPositioning/MoveToNextLine.cs
View File

@@ -1,5 +1,13 @@
namespace UglyToad.Pdf.Graphics.Operations.TextPositioning
{
using Content;
/// <summary>
/// Move to the start of the next line.
/// </summary>
/// <remarks>
/// This performs this operation: 0 Tl Td
/// </remarks>
internal class MoveToNextLine : IGraphicsStateOperation
{
public const string Symbol = "T*";
@@ -11,6 +19,13 @@
{
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
var tdOperation = new MoveToNextLineWithOffset(0, operationContext.GetCurrentState().FontState.Leading);
tdOperation.Run(operationContext, resourceStore);
}
public override string ToString()
{
return Symbol;

11
src/UglyToad.Pdf/Graphics/Operations/TextPositioning/MoveToNextLineWithOffset.cs
View File

@@ -3,6 +3,15 @@
using Content;
using Core;
/// <summary>
/// Move to the start of the next line offset by Tx Ty.
/// </summary>
/// <remarks>
/// Performs the following operation:
/// 1 0 0<br/>
/// Tm = Tlm = 0 1 0 * Tlm<br/>
/// tx ty 1
/// </remarks>
internal class MoveToNextLineWithOffset : IGraphicsStateOperation
{
public const string Symbol = "Td";
@@ -23,7 +32,7 @@
{
var currentTextLineMatrix = operationContext.TextMatrices.TextLineMatrix;
var matrix = TransformationMatrix.FromArray(1, 0, 0, 1, Tx, Ty);
var matrix = TransformationMatrix.FromValues(1, 0, 0, 1, Tx, Ty);
var transformed = matrix.Multiply(currentTextLineMatrix);

14
src/UglyToad.Pdf/Graphics/Operations/TextPositioning/MoveToNextLineWithOffsetSetLeading.cs
View File

@@ -1,5 +1,8 @@
namespace UglyToad.Pdf.Graphics.Operations.TextPositioning
{
using Content;
using TextState;
internal class MoveToNextLineWithOffsetSetLeading : IGraphicsStateOperation
{
public const string Symbol = "TD";
@@ -16,6 +19,17 @@
Ty = ty;
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
var tlOperation = new SetTextLeading(-Ty);
tlOperation.Run(operationContext, resourceStore);
var tdOperation = new MoveToNextLineWithOffset(Tx, Ty);
tdOperation.Run(operationContext, resourceStore);
}
public override string ToString()
{
return $"{Tx} {Ty} {Symbol}";

10
src/UglyToad.Pdf/Graphics/Operations/TextPositioning/SetTextMatrix.cs
View File

@@ -1,6 +1,8 @@
namespace UglyToad.Pdf.Graphics.Operations.TextPositioning
{
using System;
using Content;
using Core;
internal class SetTextMatrix : IGraphicsStateOperation
{
@@ -20,6 +22,14 @@
Value = value;
}
public void Run(IOperationContext operationContext, IResourceStore resourceStore)
{
var newMatrix = TransformationMatrix.FromArray(Value);
operationContext.TextMatrices.TextMatrix = newMatrix;
operationContext.TextMatrices.TextLineMatrix = newMatrix;
}
public override string ToString()
{
return $"{Value[0]} {Value[1]} {Value[2]} {Value[3]} {Value[4]} {Value[5]} {Symbol}";