protected void SetColorSpace(Color color)
{
cspace = color;
int type = ExtendedColor.GetType(color);
PdfObject colorSpace = null;
switch (type)
{
case ExtendedColor.TYPE_GRAY: {
colorSpace = PdfName.DEVICEGRAY;
break;
}
case ExtendedColor.TYPE_CMYK: {
colorSpace = PdfName.DEVICECMYK;
break;
}
case ExtendedColor.TYPE_SEPARATION: {
SpotColor spot = (SpotColor)color;
colorDetails = writer.AddSimple(spot.PdfSpotColor);
colorSpace = colorDetails.IndirectReference;
break;
}
case ExtendedColor.TYPE_PATTERN:
case ExtendedColor.TYPE_SHADING: {
ThrowColorSpaceError();
break;
}
default:
colorSpace = PdfName.DEVICERGB;
break;
}
shading.Put(PdfName.COLORSPACE, colorSpace);
}
internal ColorDetails AddSimplePatternColorspace(Color color)
{
int type = ExtendedColor.GetType(color);
if (type == ExtendedColor.TYPE_PATTERN || type == ExtendedColor.TYPE_SHADING)
throw new Exception("An uncolored tile pattern can not have another pattern or shading as color.");
switch (type) {
case ExtendedColor.TYPE_RGB:
if (patternColorspaceRGB == null) {
patternColorspaceRGB = new ColorDetails(GetColorspaceName(), body.PdfIndirectReference, null);
PdfArray array = new PdfArray(PdfName.PATTERN);
array.Add(PdfName.DEVICERGB);
AddToBody(array, patternColorspaceRGB.IndirectReference);
}
return patternColorspaceRGB;
case ExtendedColor.TYPE_CMYK:
if (patternColorspaceCMYK == null) {
patternColorspaceCMYK = new ColorDetails(GetColorspaceName(), body.PdfIndirectReference, null);
PdfArray array = new PdfArray(PdfName.PATTERN);
array.Add(PdfName.DEVICECMYK);
AddToBody(array, patternColorspaceCMYK.IndirectReference);
}
return patternColorspaceCMYK;
case ExtendedColor.TYPE_GRAY:
if (patternColorspaceGRAY == null) {
patternColorspaceGRAY = new ColorDetails(GetColorspaceName(), body.PdfIndirectReference, null);
PdfArray array = new PdfArray(PdfName.PATTERN);
array.Add(PdfName.DEVICEGRAY);
AddToBody(array, patternColorspaceGRAY.IndirectReference);
}
return patternColorspaceGRAY;
case ExtendedColor.TYPE_SEPARATION: {
ColorDetails details = AddSimple(((SpotColor)color).PdfSpotColor);
ColorDetails patternDetails = (ColorDetails)documentSpotPatterns[details];
if (patternDetails == null) {
patternDetails = new ColorDetails(GetColorspaceName(), body.PdfIndirectReference, null);
PdfArray array = new PdfArray(PdfName.PATTERN);
array.Add(details.IndirectReference);
AddToBody(array, patternDetails.IndirectReference);
documentSpotPatterns[details] = patternDetails;
}
return patternDetails;
}
default:
throw new Exception("Invalid color type in PdfWriter.AddSimplePatternColorspace().");
}
}
/**
* Adds a <CODE>SpotColor</CODE> to the document but not to the page resources.
* @param spc the <CODE>SpotColor</CODE> to add
* @return an <CODE>Object[]</CODE> where position 0 is a <CODE>PdfName</CODE>
* and position 1 is an <CODE>PdfIndirectReference</CODE>
*/
internal ColorDetails AddSimple(PdfSpotColor spc)
{
ColorDetails ret = (ColorDetails)documentColors[spc];
if (ret == null) {
ret = new ColorDetails(GetColorspaceName(), body.PdfIndirectReference, spc);
documentColors[spc] = ret;
}
return ret;
}
