protected override void CheckColor(PdfWriter writer, int key, Object obj1)
{
switch (key)
{
case PdfIsoKeys.PDFISOKEY_COLOR:
if (obj1 is ExtendedColor)
{
ExtendedColor ec = (ExtendedColor)obj1;
switch (ec.Type)
{
case ExtendedColor.TYPE_CMYK:
CheckColor(writer, PdfIsoKeys.PDFISOKEY_CMYK, obj1);
break;
case ExtendedColor.TYPE_GRAY:
return;
case ExtendedColor.TYPE_RGB:
CheckColor(writer, PdfIsoKeys.PDFISOKEY_RGB, obj1);
break;
case ExtendedColor.TYPE_SEPARATION:
SpotColor sc = (SpotColor)ec;
CheckColor(writer, PdfIsoKeys.PDFISOKEY_COLOR, sc.PdfSpotColor.AlternativeCS);
break;
case ExtendedColor.TYPE_SHADING:
ShadingColor xc = (ShadingColor)ec;
CheckColor(writer, PdfIsoKeys.PDFISOKEY_COLOR, xc.PdfShadingPattern.Shading.ColorSpace);
break;
case ExtendedColor.TYPE_PATTERN:
PatternColor pc = (PatternColor)ec;
CheckColor(writer, PdfIsoKeys.PDFISOKEY_COLOR, pc.Painter.DefaultColor);
break;
}
}
else if (obj1 is BaseColor)
{
CheckColor(writer, PdfIsoKeys.PDFISOKEY_RGB, obj1);
}
break;
case PdfIsoKeys.PDFISOKEY_CMYK:
if (rgbUsed)
{
throw new PdfAConformanceException(obj1, MessageLocalization.GetComposedMessage("devicergb.and.devicecmyk.colorspaces.cannot.be.used.both.in.one.file"));
}
cmykUsed = true;
break;
case PdfIsoKeys.PDFISOKEY_RGB:
if (cmykUsed)
{
throw new PdfAConformanceException(obj1, MessageLocalization.GetComposedMessage("devicergb.and.devicecmyk.colorspaces.cannot.be.used.both.in.one.file"));
}
rgbUsed = true;
break;
}
}
private void Form1_Load(object sender, EventArgs e)
{
//Test file name
string TestFile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "Test.pdf");
//Standard iTextSharp setup
using (FileStream fs = new FileStream(TestFile, FileMode.Create, FileAccess.Write, FileShare.None))
{
using (Document doc = new Document(PageSize.LETTER))
{
using (PdfWriter w = PdfWriter.GetInstance(doc, fs))
{
//Open the document for writing
doc.Open();
//Create a shading object. The (x,y)'s appear to be document-level instead of cell-level so they need to be played with
PdfShading shading = PdfShading.SimpleAxial(w, 0, 700, 300, 700, BaseColor.BLUE, BaseColor.RED);
//Create a pattern from our shading object
PdfShadingPattern pattern = new PdfShadingPattern(shading);
//Create a color from our patter
ShadingColor color = new ShadingColor(pattern);
//Create a standard two column table
PdfPTable t = new PdfPTable(2);
//Add a text cell setting the background color through object initialization
t.AddCell(new PdfPCell(new Phrase("Hello"))
{
BackgroundColor = color
});
//Add another cell with everything inline. Notice that the (x,y)'s have been updated
t.AddCell(new PdfPCell(new Phrase("World"))
{
BackgroundColor = new ShadingColor(new PdfShadingPattern(PdfShading.SimpleAxial(w, 400, 700, 600, 700, BaseColor.PINK, BaseColor.CYAN)))
});
//Add the table to the document
doc.Add(t);
//Close the document
doc.Close();
}
}
}
this.Close();
}
public void CellLayout(PdfPCell cell, Rectangle position, PdfContentByte[] canvases)
{
//Create a shading object with cell-specific coords
PdfShading shading = PdfShading.SimpleAxial(w, position.Left, position.Bottom, position.Right, position.Top, BaseColor.BLUE, BaseColor.RED);
//Create a pattern from our shading object
PdfShadingPattern pattern = new PdfShadingPattern(shading);
//Create a color from our patter
ShadingColor color = new ShadingColor(pattern);
//Get the background canvas. NOTE, If using an older version of iTextSharp (4.x) you might need to get the canvas in a different way
PdfContentByte cb = canvases[PdfPTable.BACKGROUNDCANVAS];
//Set the background color of the given rectable to our shading pattern
position.BackgroundColor = color;
//Fill the rectangle
cb.Rectangle(position);
}
/**
* Business logic that checks if a certain object is in conformance with PDF/X.
* @param writer the writer that is supposed to write the PDF/X file
* @param key the type of PDF ISO conformance that has to be checked
* @param obj1 the object that is checked for conformance
*/
public static void CheckPDFXConformance(PdfWriter writer, int key, Object obj1)
{
if (writer == null || !writer.IsPdfX())
{
return;
}
int conf = writer.PDFXConformance;
switch (key)
{
case PdfIsoKeys.PDFISOKEY_COLOR:
switch (conf)
{
case PdfWriter.PDFX1A2001:
if (obj1 is ExtendedColor)
{
ExtendedColor ec = (ExtendedColor)obj1;
switch (ec.Type)
{
case ExtendedColor.TYPE_CMYK:
case ExtendedColor.TYPE_GRAY:
return;
case ExtendedColor.TYPE_RGB:
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("colorspace.rgb.is.not.allowed"));
case ExtendedColor.TYPE_SEPARATION:
SpotColor sc = (SpotColor)ec;
CheckPDFXConformance(writer, PdfIsoKeys.PDFISOKEY_COLOR, sc.PdfSpotColor.AlternativeCS);
break;
case ExtendedColor.TYPE_SHADING:
ShadingColor xc = (ShadingColor)ec;
CheckPDFXConformance(writer, PdfIsoKeys.PDFISOKEY_COLOR, xc.PdfShadingPattern.Shading.ColorSpace);
break;
case ExtendedColor.TYPE_PATTERN:
PatternColor pc = (PatternColor)ec;
CheckPDFXConformance(writer, PdfIsoKeys.PDFISOKEY_COLOR, pc.Painter.DefaultColor);
break;
}
}
else if (obj1 is BaseColor)
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("colorspace.rgb.is.not.allowed"));
}
break;
}
break;
case PdfIsoKeys.PDFISOKEY_CMYK:
break;
case PdfIsoKeys.PDFISOKEY_RGB:
if (conf == PdfWriter.PDFX1A2001)
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("colorspace.rgb.is.not.allowed"));
}
break;
case PdfIsoKeys.PDFISOKEY_FONT:
if (!((BaseFont)obj1).IsEmbedded())
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("all.the.fonts.must.be.embedded.this.one.isn.t.1", ((BaseFont)obj1).PostscriptFontName));
}
break;
case PdfIsoKeys.PDFISOKEY_IMAGE:
PdfImage image = (PdfImage)obj1;
if (image.Get(PdfName.SMASK) != null)
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("the.smask.key.is.not.allowed.in.images"));
}
switch (conf)
{
case PdfWriter.PDFX1A2001:
PdfObject cs = image.Get(PdfName.COLORSPACE);
if (cs == null)
{
return;
}
if (cs.IsName())
{
if (PdfName.DEVICERGB.Equals(cs))
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("colorspace.rgb.is.not.allowed"));
}
}
else if (cs.IsArray())
{
if (PdfName.CALRGB.Equals(((PdfArray)cs)[0]))
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("colorspace.calrgb.is.not.allowed"));
}
}
break;
}
break;
case PdfIsoKeys.PDFISOKEY_GSTATE:
PdfDictionary gs = (PdfDictionary)obj1;
PdfObject obj = gs.Get(PdfName.BM);
if (obj != null && !PdfGState.BM_NORMAL.Equals(obj) && !PdfGState.BM_COMPATIBLE.Equals(obj))
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("blend.mode.1.not.allowed", obj.ToString()));
}
obj = gs.Get(PdfName.CA);
double v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).DoubleValue) != 1.0)
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("transparency.is.not.allowed.ca.eq.1", v));
}
obj = gs.Get(PdfName.ca_);
v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).DoubleValue) != 1.0)
{
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("transparency.is.not.allowed.ca.eq.1", v));
}
break;
case PdfIsoKeys.PDFISOKEY_LAYER:
throw new PdfXConformanceException(MessageLocalization.GetComposedMessage("layers.are.not.allowed"));
}
}
/**
* Business logic that checks if a certain object is in conformance with PDF/X.
* @param writer the writer that is supposed to write the PDF/X file
* @param key the type of PDF/X conformance that has to be checked
* @param obj1 the object that is checked for conformance
*/
public static void CheckPDFXConformance(PdfWriter writer, int key, Object obj1)
{
if (writer == null || !writer.IsPdfX())
{
return;
}
int conf = writer.PDFXConformance;
switch (key)
{
case PDFXKEY_COLOR:
switch (conf)
{
case PdfWriter.PDFX1A2001:
if (obj1 is ExtendedColor)
{
ExtendedColor ec = (ExtendedColor)obj1;
switch (ec.Type)
{
case ExtendedColor.TYPE_CMYK:
case ExtendedColor.TYPE_GRAY:
return;
case ExtendedColor.TYPE_RGB:
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
case ExtendedColor.TYPE_SEPARATION:
SpotColor sc = (SpotColor)ec;
CheckPDFXConformance(writer, PDFXKEY_COLOR, sc.PdfSpotColor.AlternativeCS);
break;
case ExtendedColor.TYPE_SHADING:
ShadingColor xc = (ShadingColor)ec;
CheckPDFXConformance(writer, PDFXKEY_COLOR, xc.PdfShadingPattern.Shading.ColorSpace);
break;
case ExtendedColor.TYPE_PATTERN:
PatternColor pc = (PatternColor)ec;
CheckPDFXConformance(writer, PDFXKEY_COLOR, pc.Painter.DefaultColor);
break;
}
}
else if (obj1 is Color)
{
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
}
break;
}
break;
case PDFXKEY_CMYK:
break;
case PDFXKEY_RGB:
if (conf == PdfWriter.PDFX1A2001)
{
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
}
break;
case PDFXKEY_FONT:
if (!((BaseFont)obj1).IsEmbedded())
{
throw new PdfXConformanceException("All the fonts must be embedded. This one isn't: " + ((BaseFont)obj1).PostscriptFontName);
}
break;
case PDFXKEY_IMAGE:
PdfImage image = (PdfImage)obj1;
if (image.Get(PdfName.SMASK) != null)
{
throw new PdfXConformanceException("The /SMask key is not allowed in images.");
}
switch (conf)
{
case PdfWriter.PDFX1A2001:
PdfObject cs = image.Get(PdfName.COLORSPACE);
if (cs == null)
{
return;
}
if (cs.IsName())
{
if (PdfName.DEVICERGB.Equals(cs))
{
throw new PdfXConformanceException("Colorspace RGB is not allowed.");
}
}
else if (cs.IsArray())
{
if (PdfName.CALRGB.Equals(((PdfArray)cs)[0]))
{
throw new PdfXConformanceException("Colorspace CalRGB is not allowed.");
}
}
break;
}
break;
case PDFXKEY_GSTATE:
PdfDictionary gs = (PdfDictionary)obj1;
PdfObject obj = gs.Get(PdfName.BM);
if (obj != null && !PdfGState.BM_NORMAL.Equals(obj) && !PdfGState.BM_COMPATIBLE.Equals(obj))
{
throw new PdfXConformanceException("Blend mode " + obj.ToString() + " not allowed.");
}
obj = gs.Get(PdfName.CA);
double v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).DoubleValue) != 1.0)
{
throw new PdfXConformanceException("Transparency is not allowed: /CA = " + v);
}
obj = gs.Get(PdfName.ca_);
v = 0.0;
if (obj != null && (v = ((PdfNumber)obj).DoubleValue) != 1.0)
{
throw new PdfXConformanceException("Transparency is not allowed: /ca = " + v);
}
break;
case PDFXKEY_LAYER:
throw new PdfXConformanceException("Layers are not allowed.");
}
}
