mirror of
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Add visual verification tests for letter glyphs
This commit is contained in:
BobLd
parent
0da7bbf3d4
commit
4e63e2c415
@ -0,0 +1,203 @@
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namespace UglyToad.PdfPig.Tests.Integration.VisualVerification
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{
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using SkiaSharp;
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using System;
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using System.IO;
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using UglyToad.PdfPig.Tests.Integration.VisualVerification.SkiaHelpers;
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using Xunit;
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public class GenerateLetterGlyphImages
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{
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private const string NonLatinAcrobatDistiller = "Single Page Non Latin - from acrobat distiller";
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private const string SingleGoogleDrivePage = "Single Page Simple - from google drive";
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private const string SinglePageFormattedType0Content = "Type0 Font";
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private const string SinglePageType1Content = "ICML03-081";
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private const string SingleInkscapePage = "Single Page Simple - from inkscape";
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private const string MotorInsuranceClaim = "Motor Insurance claim form";
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private const string PigProduction = "Pig Production Handbook";
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private const string SinglePage90ClockwiseRotation = "SinglePage90ClockwiseRotation - from PdfPig";
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private const string SinglePage180ClockwiseRotation = "SinglePage180ClockwiseRotation - from PdfPig";
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private const string SinglePage270ClockwiseRotation = "SinglePage270ClockwiseRotation - from PdfPig";
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private const string CroppedAndRotatedFile = "cropped-and-rotated";
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private const string MOZILLA_3136_0 = "MOZILLA-3136-0";
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private const string OutputPath = "ImagesGlyphs";
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private const float Scale = 2f;
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private static readonly SKMatrix ScaleMatrix = SKMatrix.CreateScale(Scale, Scale);
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public GenerateLetterGlyphImages()
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{
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if (!Directory.Exists(OutputPath))
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{
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Directory.CreateDirectory(OutputPath);
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}
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}
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private static string GetFilename(string name)
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{
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var documentFolder = Path.GetFullPath(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "..", "..", "..", "Integration", "Documents"));
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if (!name.EndsWith(".pdf"))
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{
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name += ".pdf";
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}
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return Path.Combine(documentFolder, name);
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}
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private static void Run(string file, int pageNo = 1)
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{
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var pdfFileName = GetFilename(file);
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using (var document = PdfDocument.Open(pdfFileName))
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{
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document.AddPageFactory<SKPicture, SkiaGlyphPageFactory>();
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var page = document.GetPage(pageNo);
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using (var picture = document.GetPage<SKPicture>(pageNo))
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{
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Assert.NotNull(picture);
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var imageName = $"{file}_{pageNo}.png";
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var savePath = Path.Combine(OutputPath, imageName);
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using (var fs = new FileStream(savePath, FileMode.Create))
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using (var image = SKImage.FromPicture(picture, new SKSizeI((int)(page.Width * Scale), (int)(page.Height * Scale)), ScaleMatrix))
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using (SKData d = image.Encode(SKEncodedImageFormat.Png, 100))
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{
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d.SaveTo(fs);
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}
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}
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}
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}
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[Fact]
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public void TIKA_1552_0_4()
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{
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Run("TIKA-1552-0", 4);
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}
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[Fact]
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public void TIKA_1552_0_3()
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{
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Run("TIKA-1552-0",3);
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}
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[Fact]
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public void issue_671()
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{
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Run("issue_671");
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}
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[Fact]
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public void bold_italic()
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{
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Run("bold-italic");
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}
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[Fact]
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public void cat_genetics()
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{
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Run("cat-genetics");
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}
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[Fact]
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public void _68_1990_01_A()
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{
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Run("68-1990-01_A", 2);
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}
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[Fact]
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public void SinglePageWithType1Content()
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{
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Run(SinglePageType1Content);
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}
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[Fact]
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public void SinglePageSimpleFromInkscape()
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{
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Run(SingleInkscapePage);
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}
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[Fact]
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public void SinglePageNonLatinFromAcrobatDistiller()
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{
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Run(NonLatinAcrobatDistiller);
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}
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[Fact]
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public void SinglePageSimpleFromGoogleDrive()
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{
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Run(SingleGoogleDrivePage);
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}
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[Fact]
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public void SinglePageType0Font()
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{
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Run(SinglePageFormattedType0Content);
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}
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[Fact]
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public void RotatedTextLibreOffice()
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{
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Run("Rotated Text Libre Office");
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}
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[Fact]
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public void MOZILLA_3136_0Test()
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{
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Run(MOZILLA_3136_0, 3);
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}
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[Fact]
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public void PigProductionCompactFontFormat()
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{
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Run(PigProduction);
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}
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[Fact]
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public void PopBugzilla37292()
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{
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Run("pop-bugzilla37292");
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}
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[Fact]
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public void MultiPageMortalityStatistics()
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{
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Run("Multiple Page - from Mortality Statistics");
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}
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[Fact]
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public void MotorInsuranceClaimForm()
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{
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Run(MotorInsuranceClaim);
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}
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[Fact]
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public void SinglePage90ClockwiseRotationFromPdfPig()
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{
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Run(SinglePage90ClockwiseRotation);
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}
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[Fact]
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public void SinglePage180ClockwiseRotationFromPdfPig()
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{
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Run(SinglePage180ClockwiseRotation);
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}
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[Fact]
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public void SinglePage270ClockwiseRotationFromPdfPig()
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{
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Run(SinglePage270ClockwiseRotation);
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}
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[Fact]
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public void CroppedAndRotatedTest()
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{
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Run(CroppedAndRotatedFile);
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}
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}
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}
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@ -0,0 +1,97 @@
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namespace UglyToad.PdfPig.Tests.Integration.VisualVerification.SkiaHelpers
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{
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using PdfPig.Core;
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using PdfPig.Graphics.Colors;
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using SkiaSharp;
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using System;
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using System.Collections.Generic;
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internal static class SkiaExtensions
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{
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public static SKMatrix ToSkMatrix(this TransformationMatrix transformationMatrix)
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{
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return new SKMatrix((float)transformationMatrix.A, (float)transformationMatrix.C, (float)transformationMatrix.E,
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(float)transformationMatrix.B, (float)transformationMatrix.D, (float)transformationMatrix.F,
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0, 0, 1);
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}
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public static SKColor ToSKColor(this IColor? pdfColor, decimal alpha)
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{
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var color = SKColors.Black;
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if (pdfColor != null)
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{
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var (r, g, b) = pdfColor.ToRGBValues();
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color = new SKColor(Convert.ToByte(r * 255), Convert.ToByte(g * 255), Convert.ToByte(b * 255));
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}
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return color.WithAlpha(Convert.ToByte(alpha * 255));
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}
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public static SKPath ToSKPath(this IReadOnlyList<PdfSubpath> path)
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{
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var skPath = new SKPath() { FillType = SKPathFillType.EvenOdd };
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foreach (var subpath in path)
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{
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foreach (var c in subpath.Commands)
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{
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if (c is PdfSubpath.Move move)
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{
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skPath.MoveTo((float)move.Location.X, (float)move.Location.Y);
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}
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else if (c is PdfSubpath.Line line)
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{
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skPath.LineTo((float)line.To.X, (float)line.To.Y);
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}
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else if (c is PdfSubpath.BezierCurve curve)
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{
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if (curve.StartPoint.Equals(curve.FirstControlPoint)) // TODO - This needs to be fixed in PdfPig
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{
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// Quad curve
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skPath.QuadTo((float)curve.SecondControlPoint.X, (float)curve.SecondControlPoint.Y,
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(float)curve.EndPoint.X, (float)curve.EndPoint.Y);
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}
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else
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{
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// Cubic curve
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skPath.CubicTo((float)curve.FirstControlPoint.X, (float)curve.FirstControlPoint.Y,
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(float)curve.SecondControlPoint.X, (float)curve.SecondControlPoint.Y,
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(float)curve.EndPoint.X, (float)curve.EndPoint.Y);
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}
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}
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else if (c is PdfSubpath.Close)
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{
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skPath.Close();
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}
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}
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}
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return skPath;
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}
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public static SKPaintStyle? ToSKPaintStyle(this TextRenderingMode textRenderingMode)
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{
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// This is an approximation
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switch (textRenderingMode)
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{
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case TextRenderingMode.Stroke:
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case TextRenderingMode.StrokeClip:
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return SKPaintStyle.Stroke;
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case TextRenderingMode.Fill:
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case TextRenderingMode.FillClip:
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return SKPaintStyle.Fill;
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case TextRenderingMode.FillThenStroke:
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case TextRenderingMode.FillThenStrokeClip:
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return SKPaintStyle.StrokeAndFill;
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case TextRenderingMode.NeitherClip:
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return SKPaintStyle.Stroke; // Not correct
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case TextRenderingMode.Neither:
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default:
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return null;
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}
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}
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}
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}
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@ -0,0 +1,40 @@
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namespace UglyToad.PdfPig.Tests.Integration.VisualVerification.SkiaHelpers
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{
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using Content;
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using Outline.Destinations;
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using PdfPig.Core;
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using PdfPig.Filters;
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using PdfPig.Geometry;
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using PdfPig.Graphics.Operations;
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using PdfPig.Parser;
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using PdfPig.Tokenization.Scanner;
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using PdfPig.Tokens;
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using SkiaSharp;
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using System.Collections.Generic;
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internal sealed class SkiaGlyphPageFactory : BasePageFactory<SKPicture>
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{
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public SkiaGlyphPageFactory(
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IPdfTokenScanner pdfScanner,
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IResourceStore resourceStore,
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ILookupFilterProvider filterProvider,
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IPageContentParser pageContentParser,
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ParsingOptions parsingOptions)
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: base(pdfScanner, resourceStore, filterProvider, pageContentParser, parsingOptions)
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{
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}
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protected override SKPicture ProcessPage(int pageNumber, DictionaryToken dictionary, NamedDestinations namedDestinations,
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MediaBox mediaBox, CropBox cropBox, UserSpaceUnit userSpaceUnit, PageRotationDegrees rotation,
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TransformationMatrix initialMatrix, IReadOnlyList<IGraphicsStateOperation> operations)
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{
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// Special case where cropbox is outside mediabox: use cropbox instead of intersection
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var effectiveCropBox = new CropBox(mediaBox.Bounds.Intersect(cropBox.Bounds) ?? cropBox.Bounds);
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var context = new SkiaGlyphStreamProcessor(pageNumber, ResourceStore, PdfScanner, PageContentParser,
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FilterProvider, effectiveCropBox, userSpaceUnit, rotation, initialMatrix, ParsingOptions);
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return context.Process(pageNumber, operations);
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}
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}
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}
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namespace UglyToad.PdfPig.Tests.Integration.VisualVerification.SkiaHelpers
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{
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using Content;
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using PdfFonts;
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using PdfPig.Core;
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using PdfPig.Filters;
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using PdfPig.Geometry;
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using PdfPig.Graphics;
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using PdfPig.Graphics.Colors;
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using PdfPig.Graphics.Operations;
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using PdfPig.Parser;
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using PdfPig.Tokenization.Scanner;
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using PdfPig.Tokens;
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using SkiaSharp;
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using System.Collections.Generic;
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internal sealed class SkiaGlyphStreamProcessor : BaseStreamProcessor<SKPicture>
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{
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private readonly SKMatrix yAxisFlipMatrix;
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private readonly int height;
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private readonly int width;
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private SKCanvas canvas;
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public SkiaGlyphStreamProcessor(int pageNumber, IResourceStore resourceStore, IPdfTokenScanner pdfScanner,
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IPageContentParser pageContentParser, ILookupFilterProvider filterProvider, CropBox cropBox,
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UserSpaceUnit userSpaceUnit, PageRotationDegrees rotation, TransformationMatrix initialMatrix,
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ParsingOptions parsingOptions)
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: base(pageNumber, resourceStore, pdfScanner, pageContentParser,
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filterProvider, cropBox, userSpaceUnit, rotation, initialMatrix,
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parsingOptions)
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{
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width = (int)cropBox.Bounds.Width;
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height = (int)cropBox.Bounds.Height;
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yAxisFlipMatrix = SKMatrix.CreateScale(1, -1, 0, height / 2f);
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}
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public override SKPicture Process(int pageNumberCurrent, IReadOnlyList<IGraphicsStateOperation> operations)
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{
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CloneAllStates();
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using (var recorder = new SKPictureRecorder())
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using (canvas = recorder.BeginRecording(SKRect.Create(width, height)))
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{
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canvas.Clear(SKColors.White);
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ProcessOperations(operations);
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canvas.Flush();
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return recorder.EndRecording();
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}
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}
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public override void PopState()
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{
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base.PopState();
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canvas!.Restore();
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}
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public override void PushState()
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{
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base.PushState();
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canvas!.Save();
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}
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public override void RenderGlyph(IFont font,
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IColor strokingColor,
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IColor nonStrokingColor,
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TextRenderingMode textRenderingMode,
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double fontSize,
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double pointSize,
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int code,
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string unicode,
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long currentOffset,
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TransformationMatrix renderingMatrix,
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TransformationMatrix textMatrix,
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TransformationMatrix transformationMatrix,
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CharacterBoundingBox characterBoundingBox)
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{
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if (textRenderingMode == TextRenderingMode.Neither)
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{
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return;
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}
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// TODO - Check if font is a vector font and Assert if result matches font.TryGetNormalisedPath(...)
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// We should be able to get the glyph path of all fonts that are vector fonts
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if (font.TryGetNormalisedPath(code, out var path))
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{
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var skPath = path.ToSKPath();
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ShowVectorFontGlyph(skPath, strokingColor, nonStrokingColor, textRenderingMode, renderingMatrix,
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textMatrix, transformationMatrix);
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}
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else
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{
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// TODO - Just render the bounding box?
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}
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}
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private void ShowVectorFontGlyph(SKPath path,
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IColor strokingColor,
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IColor nonStrokingColor,
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TextRenderingMode textRenderingMode,
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TransformationMatrix renderingMatrix,
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TransformationMatrix textMatrix,
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TransformationMatrix transformationMatrix)
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{
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var transformMatrix = renderingMatrix.ToSkMatrix()
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.PostConcat(textMatrix.ToSkMatrix())
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.PostConcat(transformationMatrix.ToSkMatrix())
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.PostConcat(yAxisFlipMatrix);
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var style = textRenderingMode.ToSKPaintStyle();
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if (!style.HasValue)
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{
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return;
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}
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var color = style == SKPaintStyle.Stroke ? strokingColor : nonStrokingColor;
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using (var transformedPath = new SKPath())
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using (var fillBrush = new SKPaint())
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{
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fillBrush.Style = style.Value;
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fillBrush.Color = color.ToSKColor(GetCurrentState().AlphaConstantNonStroking);
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fillBrush.IsAntialias = true;
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path.Transform(transformMatrix, transformedPath);
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canvas!.DrawPath(transformedPath, fillBrush);
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}
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}
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#region No op
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protected override void RenderXObjectImage(XObjectContentRecord xObjectContentRecord)
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{
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// No op
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}
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public override void BeginSubpath()
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{
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// No op
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}
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public override PdfPoint? CloseSubpath()
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{
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return null;
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}
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public override void StrokePath(bool close)
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{
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// No op
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}
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public override void FillPath(FillingRule fillingRule, bool close)
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{
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// No op
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}
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public override void FillStrokePath(FillingRule fillingRule, bool close)
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{
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// No op
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}
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public override void MoveTo(double x, double y)
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{
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// No op
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}
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public override void BezierCurveTo(double x1, double y1, double x2, double y2, double x3, double y3)
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{
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// No op
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}
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public override void LineTo(double x, double y)
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{
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// No op
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}
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public override void Rectangle(double x, double y, double width, double height)
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{
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// No op
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}
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public override void EndPath()
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{
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// No op
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}
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public override void ClosePath()
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{
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// No op
|
||||
}
|
||||
|
||||
public override void BeginMarkedContent(NameToken name, NameToken propertyDictionaryName, DictionaryToken properties)
|
||||
{
|
||||
// No op
|
||||
}
|
||||
|
||||
public override void EndMarkedContent()
|
||||
{
|
||||
// No op
|
||||
}
|
||||
|
||||
public override void BezierCurveTo(double x2, double y2, double x3, double y3)
|
||||
{
|
||||
// No op
|
||||
}
|
||||
|
||||
public override void ModifyClippingIntersect(FillingRule clippingRule)
|
||||
{
|
||||
// No op
|
||||
}
|
||||
|
||||
public override void PaintShading(NameToken shadingName)
|
||||
{
|
||||
// No op
|
||||
}
|
||||
|
||||
protected override void RenderInlineImage(InlineImage inlineImage)
|
||||
{
|
||||
// No op
|
||||
}
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user