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Merge pull request #521 from eliotjones-roger/rotation-support-for-page-builder

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add ability to rotate page by number of degrees, make builder fluent
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Eliot Jones 2022-12-09 09:08:27 -05:00 committed by GitHub
commit 060c7bc728
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3 changed files with 51 additions and 14 deletions
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2
src/UglyToad.PdfPig/Content/PageRotationDegrees.cs
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@ -44,7 +44,7 @@
/// <summary>
/// Create a <see cref="PageRotationDegrees"/>.
/// </summary>
/// <param name="rotation">Rotation in degrees clockwise.</param>
/// <param name="rotation">Rotation in degrees clockwise, must be a multiple of 90.</param>
public PageRotationDegrees(int rotation)
{
if (rotation < 0)

6
src/UglyToad.PdfPig/Writer/PdfDocumentBuilder.cs
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@ -3,7 +3,6 @@ namespace UglyToad.PdfPig.Writer
{
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using Content;
@ -559,6 +558,11 @@ namespace UglyToad.PdfPig.Writer
pageDictionary[NameToken.MediaBox] = RectangleToArray(page.Value.PageSize);
}
if (page.Value.rotation.HasValue)
{
pageDictionary[NameToken.Rotate] = new NumericToken(page.Value.rotation.Value);
}
// Adobe Acrobat errors if content streams ref'd by multiple pages, turn off
// dedup if on to avoid issues
var prev = context.AttemptDeduplication;

57
src/UglyToad.PdfPig/Writer/PdfPageBuilder.cs
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@ -46,6 +46,8 @@
private int imageKey = 1;
internal int? rotation;
internal IReadOnlyDictionary<string, IToken> Resources => pageDictionary.GetOrCreateDict(NameToken.Resources);
/// <summary>
@ -131,7 +133,7 @@
/// <param name="from">The first point on the line.</param>
/// <param name="to">The last point on the line.</param>
/// <param name="lineWidth">The width of the line in user space units.</param>
public void DrawLine(PdfPoint from, PdfPoint to, decimal lineWidth = 1)
public PdfPageBuilder DrawLine(PdfPoint from, PdfPoint to, decimal lineWidth = 1)
{
if (lineWidth != 1)
{
@ -146,6 +148,8 @@
{
currentStream.Add(new SetLineWidth(1));
}
return this;
}
/// <summary>
@ -156,7 +160,7 @@
/// <param name="height">The height of the rectangle.</param>
/// <param name="lineWidth">The width of the line border of the rectangle.</param>
/// <param name="fill">Whether to fill with the color set by <see cref="SetTextAndFillColor"/>.</param>
public void DrawRectangle(PdfPoint position, decimal width, decimal height, decimal lineWidth = 1, bool fill = false)
public PdfPageBuilder DrawRectangle(PdfPoint position, decimal width, decimal height, decimal lineWidth = 1, bool fill = false)
{
if (lineWidth != 1)
{
@ -178,6 +182,17 @@
{
currentStream.Add(new SetLineWidth(lineWidth));
}
return this;
}
/// <summary>
/// Set the number of degrees by which the page is rotated clockwise when displayed or printed.
/// </summary>
public PdfPageBuilder SetRotation(PageRotationDegrees degrees)
{
rotation = degrees.Value;
return this;
}
/// <summary>
@ -188,7 +203,7 @@
/// <param name="point3">Position of the third corner of the triangle.</param>
/// <param name="lineWidth">The width of the line border of the triangle.</param>
/// <param name="fill">Whether to fill with the color set by <see cref="SetTextAndFillColor"/>.</param>
public void DrawTriangle(PdfPoint point1, PdfPoint point2, PdfPoint point3, decimal lineWidth = 1, bool fill = false)
public PdfPageBuilder DrawTriangle(PdfPoint point1, PdfPoint point2, PdfPoint point3, decimal lineWidth = 1, bool fill = false)
{
if (lineWidth != 1)
{
@ -213,6 +228,8 @@
{
currentStream.Add(new SetLineWidth(lineWidth));
}
return this;
}
/// <summary>
@ -222,9 +239,11 @@
/// <param name="diameter">The diameter of the circle.</param>
/// <param name="lineWidth">The width of the line border of the circle.</param>
/// <param name="fill">Whether to fill with the color set by <see cref="SetTextAndFillColor"/>.</param>
public void DrawCircle(PdfPoint center, decimal diameter, decimal lineWidth = 1, bool fill = false)
public PdfPageBuilder DrawCircle(PdfPoint center, decimal diameter, decimal lineWidth = 1, bool fill = false)
{
DrawEllipsis(center, diameter, diameter, lineWidth, fill);
return this;
}
/// <summary>
@ -235,7 +254,7 @@
/// <param name="height">The height of the ellipsis.</param>
/// <param name="lineWidth">The width of the line border of the ellipsis.</param>
/// <param name="fill">Whether to fill with the color set by <see cref="SetTextAndFillColor"/>.</param>
public void DrawEllipsis(PdfPoint center, decimal width, decimal height, decimal lineWidth = 1, bool fill = false)
public PdfPageBuilder DrawEllipsis(PdfPoint center, decimal width, decimal height, decimal lineWidth = 1, bool fill = false)
{
width /= 2;
height /= 2;
@ -283,6 +302,8 @@
{
currentStream.Add(new SetLineWidth(lineWidth));
}
return this;
}
/// <summary>
@ -291,10 +312,12 @@
/// <param name="r">Red - 0 to 255</param>
/// <param name="g">Green - 0 to 255</param>
/// <param name="b">Blue - 0 to 255</param>
public void SetStrokeColor(byte r, byte g, byte b)
public PdfPageBuilder SetStrokeColor(byte r, byte g, byte b)
{
currentStream.Add(Push.Value);
currentStream.Add(new SetStrokeColorDeviceRgb(RgbToDecimal(r), RgbToDecimal(g), RgbToDecimal(b)));
return this;
}
/// <summary>
@ -303,11 +326,13 @@
/// <param name="r">Red - 0 to 1</param>
/// <param name="g">Green - 0 to 1</param>
/// <param name="b">Blue - 0 to 1</param>
internal void SetStrokeColorExact(decimal r, decimal g, decimal b)
internal PdfPageBuilder SetStrokeColorExact(decimal r, decimal g, decimal b)
{
currentStream.Add(Push.Value);
currentStream.Add(new SetStrokeColorDeviceRgb(CheckRgbDecimal(r, nameof(r)),
CheckRgbDecimal(g, nameof(g)), CheckRgbDecimal(b, nameof(b))));
return this;
}
/// <summary>
@ -316,18 +341,22 @@
/// <param name="r">Red - 0 to 255</param>
/// <param name="g">Green - 0 to 255</param>
/// <param name="b">Blue - 0 to 255</param>
public void SetTextAndFillColor(byte r, byte g, byte b)
public PdfPageBuilder SetTextAndFillColor(byte r, byte g, byte b)
{
currentStream.Add(Push.Value);
currentStream.Add(new SetNonStrokeColorDeviceRgb(RgbToDecimal(r), RgbToDecimal(g), RgbToDecimal(b)));
return this;
}
/// <summary>
/// Restores the stroke, text and fill color to default (black).
/// </summary>
public void ResetColor()
public PdfPageBuilder ResetColor()
{
currentStream.Add(Pop.Value);
return this;
}
/// <summary>
@ -451,9 +480,11 @@
/// To insert invisible text, for example output of OCR, use <c>TextRenderingMode.Neither</c>.
/// </summary>
/// <param name="mode">Text rendering mode to set.</param>
public void SetTextRenderingMode(TextRenderingMode mode)
public PdfPageBuilder SetTextRenderingMode(TextRenderingMode mode)
{
currentStream.Add(new SetTextRenderingMode(mode));
return this;
}
private NameToken GetAddedFont(PdfDocumentBuilder.AddedFont font)
@ -690,7 +721,7 @@
/// Copy a page from unknown source to this page
/// </summary>
/// <param name="srcPage">Page to be copied</param>
public void CopyFrom(Page srcPage)
public PdfPageBuilder CopyFrom(Page srcPage)
{
if (currentStream.Operations.Count > 0)
{
@ -704,7 +735,7 @@
// If the page doesn't have resources, then we copy the entire content stream, since not operation would collide
// with the ones already written
destinationStream.Operations.AddRange(srcPage.Operations);
return;
return this;
}
// TODO: How should we handle any other token in the page dictionary (Eg. LastModified, MediaBox, CropBox, BleedBox, TrimBox, ArtBox,
@ -828,6 +859,8 @@
}
destinationStream.Operations.AddRange(operations);
return this;
}
private List<Letter> DrawLetters(NameToken name, string text, IWritingFont font, TransformationMatrix fontMatrix, decimal fontSize, TransformationMatrix textMatrix)