private void TestFile(String filename, String objectid, String expectedImageFormat)
{
PdfDocument pdfDocument = new PdfDocument(new PdfReader(sourceFolder + filename));
try {
PdfResources resources = pdfDocument.GetPage(1).GetResources();
PdfDictionary xobjects = resources.GetResource(PdfName.XObject);
PdfObject obj = xobjects.Get(new PdfName(objectid));
if (obj == null)
{
throw new ArgumentException("Reference " + objectid + " not found - Available keys are " + xobjects.KeySet
());
}
PdfImageXObject img = new PdfImageXObject((PdfStream)(obj.IsIndirectReference() ? ((PdfIndirectReference)obj
).GetRefersTo() : obj));
NUnit.Framework.Assert.AreEqual(expectedImageFormat, img.IdentifyImageFileExtension());
byte[] result = img.GetImageBytes(true);
byte[] cmpBytes = File.ReadAllBytes(Path.Combine(sourceFolder, filename.JSubstring(0, filename.Length - 4)
+ "." + expectedImageFormat));
if (img.IdentifyImageFileExtension().Equals("tif"))
{
CompareTiffImages(cmpBytes, result);
}
else
{
NUnit.Framework.Assert.AreEqual(cmpBytes, result);
}
}
finally {
pdfDocument.Close();
}
}
private void TestSingleImage(String imgName)
{
String @out = destinationFolder + imgName.JSubstring(0, imgName.Length - 4) + ".pdf";
String cmp = sourceFolder + "cmp_" + imgName.JSubstring(0, imgName.Length - 4) + ".pdf";
ImageData img = ImageDataFactory.Create(sourceFolder + imgName);
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(@out));
PdfImageXObject imageXObject = new PdfImageXObject(img);
new PdfCanvas(pdfDocument.AddNewPage(new PageSize(img.GetWidth(), img.GetHeight()))).AddXObject(imageXObject
, 0, 0, img.GetWidth());
pdfDocument.Close();
NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(@out, cmp, destinationFolder, "diff_"));
}
public ImagePdfBytesInfo(PdfImageXObject imageXObject)
{
pngColorType = -1;
bpc = imageXObject.GetPdfObject().GetAsNumber(PdfName.BitsPerComponent).IntValue();
pngBitDepth = bpc;
palette = null;
icc = null;
stride = 0;
width = (int)imageXObject.GetWidth();
height = (int)imageXObject.GetHeight();
colorspace = imageXObject.GetPdfObject().Get(PdfName.ColorSpace);
decode = imageXObject.GetPdfObject().GetAsArray(PdfName.Decode);
FindColorspace(colorspace, true);
}
public virtual void AddFlushedImageXObjectToCanvas()
{
String filename = destinationFolder + "addFlushedImageXObjectToCanvas.pdf";
String cmpfile = sourceFolder + "cmp_addFlushedImageXObjectToCanvas.pdf";
String image = sourceFolder + "image.png";
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(filename));
PdfImageXObject imageXObject = new PdfImageXObject(ImageDataFactory.Create(image));
// flushing pdf object directly
imageXObject.GetPdfObject().MakeIndirect(pdfDoc).Flush();
PdfCanvas canvas = new PdfCanvas(pdfDoc.AddNewPage());
canvas.AddXObject(imageXObject, 50, 500, 200);
pdfDoc.Close();
NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(filename, cmpfile, destinationFolder));
}
private void ConvertAndCompare(String outFilename, String cmpFilename, String imageFilename)
{
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(outFilename));
PdfDocument cmpDoc = new PdfDocument(new PdfReader(cmpFilename));
PdfImageXObject imageXObject = new PdfImageXObject(ImageDataFactory.Create(imageFilename));
PdfCanvas canvas = new PdfCanvas(pdfDoc.AddNewPage());
canvas.AddXObject(imageXObject, 50, 500, 346);
pdfDoc.Close();
PdfDocument outDoc = new PdfDocument(new PdfReader(outFilename));
PdfStream outStream = outDoc.GetFirstPage().GetResources().GetResource(PdfName.XObject).GetAsStream(new PdfName
("Im1"));
PdfStream cmpStream = cmpDoc.GetFirstPage().GetResources().GetResource(PdfName.XObject).GetAsStream(new PdfName
("Im1"));
NUnit.Framework.Assert.IsNull(new CompareTool().CompareStreamsStructure(outStream, cmpStream));
cmpDoc.Close();
outDoc.Close();
}
public virtual void CompareColorspacesTest()
{
String[] imgFiles = new String[] { "adobe.png", "anon.gif", "anon.jpg", "anon.png", "gamma.png", "odd.png"
, "rec709.jpg", "srgb.jpg", "srgb.png" };
String @out = destinationFolder + "compareColorspacesTest.pdf";
String cmp = sourceFolder + "cmp_compareColorspacesTest.pdf";
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(@out));
PdfCanvas canvas = new PdfCanvas(pdfDocument.AddNewPage());
canvas.BeginText().MoveText(40, 730).SetFontAndSize(PdfFontFactory.CreateFont(), 12).ShowText("The images below are in row and expected to form four continuous lines of constant colors."
).EndText();
for (int i = 0; i < imgFiles.Length; i++)
{
String imgFile = imgFiles[i];
PdfImageXObject imageXObject = new PdfImageXObject(ImageDataFactory.Create(sourceFolder + "compare_colorspaces/"
+ imgFile));
canvas.AddXObject(imageXObject, 50 + i * 40, 550, 40);
}
pdfDocument.Close();
NUnit.Framework.Assert.IsNull(new CompareTool().CompareByContent(@out, cmp, destinationFolder, "diff_"));
}
/// <summary>
/// Calculates a rectangle with the specified coordinates and height, and the width is
/// calculated in such a way that the original proportions of the xObject do not change.
/// </summary>
/// <remarks>
/// Calculates a rectangle with the specified coordinates and height, and the width is
/// calculated in such a way that the original proportions of the xObject do not change.
/// <para />
/// To calculate the original width and height of the xObject, the BBox and Matrix fields
/// are used. For mor information see paragraph 8.10.1 in ISO-32000-1.
/// </remarks>
/// <param name="xObject">the xObject for which we are calculating the rectangle</param>
/// <param name="x">the x-coordinate of the lower-left corner of the rectangle</param>
/// <param name="y">the y-coordinate of the lower-left corner of the rectangle</param>
/// <param name="height">the height of the rectangle</param>
/// <returns>the rectangle with specified coordinates and height</returns>
public static Rectangle CalculateProportionallyFitRectangleWithHeight(iText.Kernel.Pdf.Xobject.PdfXObject
xObject, float x, float y, float height)
{
if (xObject is PdfFormXObject)
{
PdfFormXObject formXObject = (PdfFormXObject)xObject;
Rectangle bBox = PdfFormXObject.CalculateBBoxMultipliedByMatrix(formXObject);
return(new Rectangle(x, y, (height / bBox.GetHeight()) * bBox.GetWidth(), height));
}
else
{
if (xObject is PdfImageXObject)
{
PdfImageXObject imageXObject = (PdfImageXObject)xObject;
return(new Rectangle(x, y, (height / imageXObject.GetHeight()) * imageXObject.GetWidth(), height));
}
else
{
throw new ArgumentException("PdfFormXObject or PdfImageXObject expected.");
}
}
}
public virtual void ImageBinaryTransparencySameColorTest()
{
// See http://stackoverflow.com/questions/39119776/itext-binary-transparency-bug
String outFile = destinationFolder + "imageBinaryTransparencySameColorTest.pdf";
String cmpFile = sourceFolder + "cmp_imageBinaryTransparencySameColorTest.pdf";
ImageData bkgnd = ImageDataFactory.Create(sourceFolder + "itext.jpg");
PdfImageXObject image = new PdfImageXObject(bkgnd);
PdfDocument pdfDocument = new PdfDocument(new PdfWriter(outFile));
PdfCanvas canvas = new PdfCanvas(pdfDocument.AddNewPage());
PdfPage firstPage = pdfDocument.GetFirstPage();
canvas.AddXObject(image, firstPage.GetPageSize());
canvas
.BeginText()
.SetTextMatrix(36, 790)
.SetFontAndSize(PdfFontFactory.CreateFont(), 12)
.ShowText("Invisible image (both opaque and non opaque pixels have the same color)")
.EndText();
canvas.AddXObject(new PdfImageXObject(
ImageDataFactory.Create(CreateBinaryTransparentAWTImage(Color.Black, false, null), null)), 36, 580);
PdfDocument cmpDoc = new PdfDocument(new PdfReader(cmpFile));
// In general case this code will probably will fail, however in this particular case we know the structure of the pdf
PdfStream outStream = firstPage.GetResources().GetResource(PdfName.XObject).GetAsStream(new PdfName("Im1"));
PdfStream cmpStream = cmpDoc.GetFirstPage().GetResources().GetResource(PdfName.XObject).GetAsStream(new PdfName("Im1"));
NUnit.Framework.Assert.IsNull(new CompareTool().CompareStreamsStructure(outStream, cmpStream));
cmpDoc.Close();
pdfDocument.Close();
PrintOutputPdfNameAndDir(outFile);
}
