public static PdfFunction Type0(PdfWriter writer, float[] domain, float[] range, int[] size,
int bitsPerSample, int order, float[] encode, float[] decode, byte[] stream)
{
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfStream(stream);
((PdfStream)func.dictionary).FlateCompress(writer.CompressionLevel);
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(0));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
func.dictionary.Put(PdfName.SIZE, new PdfArray(size));
func.dictionary.Put(PdfName.BITSPERSAMPLE, new PdfNumber(bitsPerSample));
if (order != 1)
{
func.dictionary.Put(PdfName.ORDER, new PdfNumber(order));
}
if (encode != null)
{
func.dictionary.Put(PdfName.ENCODE, new PdfArray(encode));
}
if (decode != null)
{
func.dictionary.Put(PdfName.DECODE, new PdfArray(decode));
}
return(func);
}
public static PdfShading SimpleRadial(PdfWriter writer, float x0, float y0, float r0, float x1, float y1, float r1, Color startColor, Color endColor, bool extendStart, bool extendEnd)
{
CheckCompatibleColors(startColor, endColor);
PdfFunction function = PdfFunction.Type2(writer, new float[] { 0, 1 }, null, GetColorArray(startColor),
GetColorArray(endColor), 1);
return(Type3(writer, startColor, new float[] { x0, y0, r0, x1, y1, r1 }, null, function, new bool[] { extendStart, extendEnd }));
}
public static PdfFunction Type4(PdfWriter writer, float[] domain, float[] range, string postscript)
{
byte[] b = new byte[postscript.Length];
for (int k = 0; k < b.Length; ++k)
{
b[k] = (byte)postscript[k];
}
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfStream(b);
((PdfStream)func.dictionary).FlateCompress(writer.CompressionLevel);
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(4));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
return(func);
}
public static PdfFunction Type3(PdfWriter writer, float[] domain, float[] range, PdfFunction[] functions, float[] bounds, float[] encode)
{
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfDictionary();
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(3));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
if (range != null)
{
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
}
PdfArray array = new PdfArray();
for (int k = 0; k < functions.Length; ++k)
{
array.Add(functions[k].Reference);
}
func.dictionary.Put(PdfName.FUNCTIONS, array);
func.dictionary.Put(PdfName.BOUNDS, new PdfArray(bounds));
func.dictionary.Put(PdfName.ENCODE, new PdfArray(encode));
return(func);
}
public static PdfFunction Type2(PdfWriter writer, float[] domain, float[] range, float[] c0, float[] c1, float n)
{
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfDictionary();
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(2));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
if (range != null)
{
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
}
if (c0 != null)
{
func.dictionary.Put(PdfName.C0, new PdfArray(c0));
}
if (c1 != null)
{
func.dictionary.Put(PdfName.C1, new PdfArray(c1));
}
func.dictionary.Put(PdfName.N, new PdfNumber(n));
return(func);
}
protected internal PdfObject GetSpotObject(PdfWriter writer)
{
PdfArray array = new PdfArray(PdfName.SEPARATION);
array.Add(name);
PdfFunction func = null;
if (altcs is ExtendedColor)
{
int type = ((ExtendedColor)altcs).Type;
switch (type)
{
case ExtendedColor.TYPE_GRAY:
array.Add(PdfName.DEVICEGRAY);
func = PdfFunction.Type2(writer, new float[] { 0, 1 }, null, new float[] { 0 }, new float[] { ((GrayColor)altcs).Gray }, 1);
break;
case ExtendedColor.TYPE_CMYK:
array.Add(PdfName.DEVICECMYK);
CMYKColor cmyk = (CMYKColor)altcs;
func = PdfFunction.Type2(writer, new float[] { 0, 1 }, null, new float[] { 0, 0, 0, 0 },
new float[] { cmyk.Cyan, cmyk.Magenta, cmyk.Yellow, cmyk.Black }, 1);
break;
default:
throw new Exception("Only RGB, Gray and CMYK are supported as alternative color spaces.");
}
}
else
{
array.Add(PdfName.DEVICERGB);
func = PdfFunction.Type2(writer, new float[] { 0, 1 }, null, new float[] { 1, 1, 1 },
new float[] { (float)altcs.R / 255, (float)altcs.G / 255, (float)altcs.B / 255 }, 1);
}
array.Add(func.Reference);
return(array);
}
public static PdfFunction Type0(PdfWriter writer, float[] domain, float[] range, int[] size,
int bitsPerSample, int order, float[] encode, float[] decode, byte[] stream)
{
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfStream(stream);
((PdfStream)func.dictionary).FlateCompress(writer.CompressionLevel);
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(0));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
func.dictionary.Put(PdfName.SIZE, new PdfArray(size));
func.dictionary.Put(PdfName.BITSPERSAMPLE, new PdfNumber(bitsPerSample));
if (order != 1)
func.dictionary.Put(PdfName.ORDER, new PdfNumber(order));
if (encode != null)
func.dictionary.Put(PdfName.ENCODE, new PdfArray(encode));
if (decode != null)
func.dictionary.Put(PdfName.DECODE, new PdfArray(decode));
return func;
}
public static PdfFunction Type4(PdfWriter writer, float[] domain, float[] range, string postscript)
{
byte[] b = new byte[postscript.Length];
for (int k = 0; k < b.Length; ++k)
b[k] = (byte)postscript[k];
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfStream(b);
((PdfStream)func.dictionary).FlateCompress(writer.CompressionLevel);
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(4));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
return func;
}
public static PdfFunction Type3(PdfWriter writer, float[] domain, float[] range, PdfFunction[] functions, float[] bounds, float[] encode)
{
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfDictionary();
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(3));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
if (range != null)
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
PdfArray array = new PdfArray();
for (int k = 0; k < functions.Length; ++k)
array.Add(functions[k].Reference);
func.dictionary.Put(PdfName.FUNCTIONS, array);
func.dictionary.Put(PdfName.BOUNDS, new PdfArray(bounds));
func.dictionary.Put(PdfName.ENCODE, new PdfArray(encode));
return func;
}
public static PdfFunction Type2(PdfWriter writer, float[] domain, float[] range, float[] c0, float[] c1, float n)
{
PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfDictionary();
func.dictionary.Put(PdfName.FUNCTIONTYPE, new PdfNumber(2));
func.dictionary.Put(PdfName.DOMAIN, new PdfArray(domain));
if (range != null)
func.dictionary.Put(PdfName.RANGE, new PdfArray(range));
if (c0 != null)
func.dictionary.Put(PdfName.C0, new PdfArray(c0));
if (c1 != null)
func.dictionary.Put(PdfName.C1, new PdfArray(c1));
func.dictionary.Put(PdfName.N, new PdfNumber(n));
return func;
}
public static PdfShading Type3(PdfWriter writer, Color colorSpace, float[] coords, float[] domain, PdfFunction function, bool[] extend)
{
PdfShading sp = Type2(writer, colorSpace, coords, domain, function, extend);
sp.shadingType = 3;
sp.shading.Put(PdfName.SHADINGTYPE, new PdfNumber(sp.shadingType));
return(sp);
}
public static PdfShading Type2(PdfWriter writer, Color colorSpace, float[] coords, float[] domain, PdfFunction function, bool[] extend)
{
PdfShading sp = new PdfShading(writer);
sp.shading = new PdfDictionary();
sp.shadingType = 2;
sp.shading.Put(PdfName.SHADINGTYPE, new PdfNumber(sp.shadingType));
sp.SetColorSpace(colorSpace);
sp.shading.Put(PdfName.COORDS, new PdfArray(coords));
if (domain != null)
{
sp.shading.Put(PdfName.DOMAIN, new PdfArray(domain));
}
sp.shading.Put(PdfName.FUNCTION, function.Reference);
if (extend != null && (extend[0] || extend[1]))
{
PdfArray array = new PdfArray(extend[0] ? PdfBoolean.PDFTRUE : PdfBoolean.PDFFALSE);
array.Add(extend[1] ? PdfBoolean.PDFTRUE : PdfBoolean.PDFFALSE);
sp.shading.Put(PdfName.EXTEND, array);
}
return(sp);
}
public static PdfShading Type1(PdfWriter writer, Color colorSpace, float[] domain, float[] tMatrix, PdfFunction function)
{
PdfShading sp = new PdfShading(writer);
sp.shading = new PdfDictionary();
sp.shadingType = 1;
sp.shading.Put(PdfName.SHADINGTYPE, new PdfNumber(sp.shadingType));
sp.SetColorSpace(colorSpace);
if (domain != null)
{
sp.shading.Put(PdfName.DOMAIN, new PdfArray(domain));
}
if (tMatrix != null)
{
sp.shading.Put(PdfName.MATRIX, new PdfArray(tMatrix));
}
sp.shading.Put(PdfName.FUNCTION, function.Reference);
return(sp);
}
