/// <summary>
/// Retrieves the specifed dictionary object as an object encoded with CCITTFaxDecode filter (TIFF).
/// </summary>
/// <param name="dictionary">The dictionary to extract the object from.</param>
/// <returns>The image retrieve from the dictionary. If not found or an invalid image, then null is returned.</returns>
private static Image ImageFromCCITTFaxDecode(PdfDictionary dictionary)
{
Image image = null;
PdfDictionaryImageMetaData imageData = new PdfDictionaryImageMetaData(dictionary);
PixelFormat format = GetPixelFormat(imageData.ColorSpace, imageData.BitsPerPixel, true);
Bitmap bitmap = new Bitmap(imageData.Width, imageData.Height, format);
// Determine if BLACK=1, create proper indexed color palette.
CCITTFaxDecodeParameters ccittFaxDecodeParameters = new CCITTFaxDecodeParameters(dictionary.Elements["/DecodeParms"].Get() as PdfDictionary);
if (ccittFaxDecodeParameters.BlackIs1) bitmap.Palette = PdfIndexedColorSpace.CreateColorPalette(Color.Black, Color.White);
else bitmap.Palette = PdfIndexedColorSpace.CreateColorPalette(Color.White, Color.Black);
using (MemoryStream stream = new MemoryStream(GetTiffImageBufferFromCCITTFaxDecode(imageData, dictionary.Stream.Value))) {
using (Tiff tiff = Tiff.ClientOpen("<INLINE>", "r", stream, new TiffStream())) {
if (tiff == null) return (null);
int stride = tiff.ScanlineSize();
byte[] buffer = new byte[stride];
for (int i = 0; i < imageData.Height; i++) {
tiff.ReadScanline(buffer, i);
Rectangle imgRect = new Rectangle(0, i, imageData.Width, 1);
BitmapData imgData = bitmap.LockBits(imgRect, ImageLockMode.WriteOnly, PixelFormat.Format1bppIndexed);
Marshal.Copy(buffer, 0, imgData.Scan0, buffer.Length);
bitmap.UnlockBits(imgData);
}
}
}
return (bitmap);
}
/// <summary>
/// Reads next frame image
/// </summary>
protected void ReadImage()
{
this.ix = this.ReadShort();
this.iy = this.ReadShort();
this.iw = this.ReadShort();
this.ih = this.ReadShort();
int num = this.inp.ReadByte();
this.lctFlag = (num & 0x80) != 0;
this.interlace = (num & 0x40) != 0;
this.lctSize = ((int)2) << (num & 7);
this.m_bpc = NewBpc(this.m_gbpc);
if (this.lctFlag)
{
this.m_curr_table = this.ReadColorTable((num & 7) + 1);
this.m_bpc = NewBpc((num & 7) + 1);
}
else
{
this.m_curr_table = this.m_global_table;
}
if (this.transparency && (this.transIndex >= (this.m_curr_table.Length / 3)))
{
this.transparency = false;
}
if (this.transparency && (this.m_bpc == 1))
{
byte[] destinationArray = new byte[12];
Array.Copy(this.m_curr_table, 0, destinationArray, 0, 6);
this.m_curr_table = destinationArray;
this.m_bpc = 2;
}
if (!this.DecodeImageData())
{
this.Skip();
}
Image image = new RawImage(this.iw, this.ih, 1, this.m_bpc, this.m_out);
int length = this.m_curr_table.Length;
PdfIndexedColorSpace space = new PdfIndexedColorSpace(PdfName.DeviceRGB, (length / 3) - 1, this.m_curr_table);
PdfDictionary dictionary2 = new PdfDictionary();
dictionary2.Add(PdfName.ColorSpace, space);
PdfDictionary dictionary = dictionary2;
image.Properties = dictionary;
if (this.transparency)
{
image.Transparency = new int[] { this.transIndex, this.transIndex };
}
image.OriginalType = ImageType.GIF;
image.OriginalData = this.fromData;
GifFrame item = new GifFrame {
Image = image,
X = this.ix,
Y = this.iy
};
this.frames.Add(item);
}
/// <summary>
/// Indexeds the model.
/// </summary>
/// <param name="bdata">The bdata.</param>
/// <param name="bpc">The BPC.</param>
/// <param name="paletteEntries">The palette entries.</param>
/// <returns></returns>
private Image IndexedModel(byte[] bdata, int bpc, int paletteEntries)
{
Image image = new RawImage(this.width, this.height, 1, bpc, bdata);
byte[] palette = this.GetPalette(paletteEntries);
int length = palette.Length;
PdfIndexedColorSpace space = new PdfIndexedColorSpace(PdfName.DeviceRGB, (length / 3) - 1, palette);
PdfDictionary dictionary2 = new PdfDictionary();
dictionary2.Add(PdfName.ColorSpace, space);
PdfDictionary dictionary = dictionary2;
image.Properties = dictionary;
return(image);
}
private static void DrawColorsAndColorSpaces(PdfPage page, PdfFont titleFont, PdfFont sectionFont, Stream iccStream)
{
PdfBrush brush = new PdfBrush();
page.Graphics.DrawString("Colors and colorspaces", titleFont, brush, 20, 50);
page.Graphics.DrawString("DeviceRGB", sectionFont, brush, 20, 70);
PdfPen rgbPen = new PdfPen(PdfRgbColor.DarkRed, 4);
PdfBrush rgbBrush = new PdfBrush(PdfRgbColor.LightGoldenrodYellow);
page.Graphics.DrawRectangle(rgbPen, rgbBrush, 20, 85, 250, 100);
page.Graphics.DrawString("DeviceCMYK", sectionFont, brush, 340, 70);
PdfPen cmykPen = new PdfPen(new PdfCmykColor(1, 0.5, 0, 0.1), 4);
PdfBrush cmykBrush = new PdfBrush(new PdfCmykColor(0, 0.5, 0.43, 0));
page.Graphics.DrawRectangle(cmykPen, cmykBrush, 340, 85, 250, 100);
page.Graphics.DrawString("DeviceGray", sectionFont, brush, 20, 200);
PdfPen grayPen = new PdfPen(new PdfGrayColor(0.1), 4);
PdfBrush grayBrush = new PdfBrush(new PdfGrayColor(0.75));
page.Graphics.DrawRectangle(grayPen, grayBrush, 20, 215, 250, 100);
page.Graphics.DrawString("Indexed", sectionFont, brush, 340, 200);
PdfIndexedColorSpace indexedColorSpace = new PdfIndexedColorSpace();
indexedColorSpace.ColorCount = 2;
indexedColorSpace.BaseColorSpace = new PdfRgbColorSpace();
indexedColorSpace.ColorTable = new byte[] { 192, 0, 0, 0, 0, 128 };
PdfIndexedColor indexedColor0 = new PdfIndexedColor(indexedColorSpace);
indexedColor0.ColorIndex = 0;
PdfIndexedColor indexedColor1 = new PdfIndexedColor(indexedColorSpace);
indexedColor1.ColorIndex = 1;
PdfPen indexedPen = new PdfPen(indexedColor0, 4);
PdfBrush indexedBrush = new PdfBrush(indexedColor1);
page.Graphics.DrawRectangle(indexedPen, indexedBrush, 340, 215, 250, 100);
page.Graphics.DrawString("CalGray", sectionFont, brush, 20, 330);
PdfCalGrayColorSpace calGrayColorSpace = new PdfCalGrayColorSpace();
PdfCalGrayColor calGrayColor1 = new PdfCalGrayColor(calGrayColorSpace);
calGrayColor1.Gray = 0.6;
PdfCalGrayColor calGrayColor2 = new PdfCalGrayColor(calGrayColorSpace);
calGrayColor2.Gray = 0.2;
PdfPen calGrayPen = new PdfPen(calGrayColor1, 4);
PdfBrush calGrayBrush = new PdfBrush(calGrayColor2);
page.Graphics.DrawRectangle(calGrayPen, calGrayBrush, 20, 345, 250, 100);
page.Graphics.DrawString("CalRGB", sectionFont, brush, 340, 330);
PdfCalRgbColorSpace calRgbColorSpace = new PdfCalRgbColorSpace();
PdfCalRgbColor calRgbColor1 = new PdfCalRgbColor(calRgbColorSpace);
calRgbColor1.Red = 0.1;
calRgbColor1.Green = 0.5;
calRgbColor1.Blue = 0.25;
PdfCalRgbColor calRgbColor2 = new PdfCalRgbColor(calRgbColorSpace);
calRgbColor2.Red = 0.6;
calRgbColor2.Green = 0.1;
calRgbColor2.Blue = 0.9;
PdfPen calRgbPen = new PdfPen(calRgbColor1, 4);
PdfBrush calRgbBrush = new PdfBrush(calRgbColor2);
page.Graphics.DrawRectangle(calRgbPen, calRgbBrush, 340, 345, 250, 100);
page.Graphics.DrawString("L*a*b", sectionFont, brush, 20, 460);
PdfLabColorSpace labColorSpace = new PdfLabColorSpace();
PdfLabColor labColor1 = new PdfLabColor(labColorSpace);
labColor1.L = 90;
labColor1.A = -40;
labColor1.B = 120;
PdfLabColor labColor2 = new PdfLabColor(labColorSpace);
labColor2.L = 45;
labColor2.A = 90;
labColor2.B = -34;
PdfPen labPen = new PdfPen(labColor1, 4);
PdfBrush labBrush = new PdfBrush(labColor2);
page.Graphics.DrawRectangle(labPen, labBrush, 20, 475, 250, 100);
page.Graphics.DrawString("Icc", sectionFont, brush, 340, 460);
PdfIccColorSpace iccColorSpace = new PdfIccColorSpace();
byte[] iccData = new byte[iccStream.Length];
iccStream.Read(iccData, 0, iccData.Length);
iccColorSpace.IccProfile = iccData;
iccColorSpace.AlternateColorSpace = new PdfRgbColorSpace();
iccColorSpace.ColorComponents = 3;
PdfIccColor iccColor1 = new PdfIccColor(iccColorSpace);
iccColor1.ColorComponents = new double[] { 0.45, 0.1, 0.22 };
PdfIccColor iccColor2 = new PdfIccColor(iccColorSpace);
iccColor2.ColorComponents = new double[] { 0.21, 0.76, 0.31 };
PdfPen iccPen = new PdfPen(iccColor1, 4);
PdfBrush iccBrush = new PdfBrush(iccColor2);
page.Graphics.DrawRectangle(iccPen, iccBrush, 340, 475, 250, 100);
page.Graphics.DrawString("Separation", sectionFont, brush, 20, 590);
PdfExponentialFunction tintTransform = new PdfExponentialFunction();
tintTransform.Domain = new double[] { 0, 1 };
tintTransform.Range = new double[] { 0, 1, 0, 1, 0, 1, 0, 1 };
tintTransform.Exponent = 1;
tintTransform.C0 = new double[] { 0, 0, 0, 0 };
tintTransform.C1 = new double[] { 1, 0.5, 0, 0.1 };
PdfSeparationColorSpace separationColorSpace = new PdfSeparationColorSpace();
separationColorSpace.AlternateColorSpace = new PdfCmykColorSpace();
separationColorSpace.Colorant = "Custom Blue";
separationColorSpace.TintTransform = tintTransform;
PdfSeparationColor separationColor1 = new PdfSeparationColor(separationColorSpace);
separationColor1.Tint = 0.23;
PdfSeparationColor separationColor2 = new PdfSeparationColor(separationColorSpace);
separationColor2.Tint = 0.74;
PdfPen separationPen = new PdfPen(separationColor1, 4);
PdfBrush separationBrush = new PdfBrush(separationColor2);
page.Graphics.DrawRectangle(separationPen, separationBrush, 20, 605, 250, 100);
page.Graphics.DrawString("Pantone", sectionFont, brush, 340, 590);
PdfPen pantonePen = new PdfPen(PdfPantoneColor.ReflexBlue, 4);
PdfBrush pantoneBrush = new PdfBrush(PdfPantoneColor.RhodamineRed);
page.Graphics.DrawRectangle(pantonePen, pantoneBrush, 340, 605, 250, 100);
page.Graphics.CompressAndClose();
}
/// <summary>
/// Retrieves the specifed dictionary object as an object encoded with CCITTFaxDecode filter (TIFF).
/// </summary>
/// <param name="dictionary">The dictionary to extract the object from.</param>
/// <returns>The image retrieve from the dictionary. If not found or an invalid image, then null is returned.</returns>
private static Image ImageFromCCITTFaxDecode(PdfDictionary dictionary)
{
PdfDictionaryImageMetaData imageData = new PdfDictionaryImageMetaData(dictionary);
PixelFormat format = GetPixelFormat(imageData.ColorSpace, imageData.BitsPerPixel, true);
Bitmap bitmap = new Bitmap(imageData.Width, imageData.Height, format);
// Determine if BLACK=1, create proper indexed color palette.
PdfDictionary decodeParams;
var decodeParamsObject = dictionary.Elements["/DecodeParms"].Get();
if (decodeParamsObject is PdfArray)
{
decodeParams = (decodeParamsObject as PdfArray).First() as PdfDictionary;
}
else if (decodeParamsObject is PdfDictionary)
{
decodeParams = decodeParamsObject as PdfDictionary;
}
else
{
throw new NotSupportedException("Unknown format of CCITTFaxDecode params.");
}
CCITTFaxDecodeParameters ccittFaxDecodeParameters = new CCITTFaxDecodeParameters(decodeParams);
if (ccittFaxDecodeParameters.BlackIs1)
{
bitmap.Palette = PdfIndexedColorSpace.CreateColorPalette(Color.Black, Color.White);
}
else
{
bitmap.Palette = PdfIndexedColorSpace.CreateColorPalette(Color.White, Color.Black);
}
if (ccittFaxDecodeParameters.K == 0 || ccittFaxDecodeParameters.K > 0)
{
imageData.Compression = Compression.CCITTFAX3;
}
else if (ccittFaxDecodeParameters.K < 0)
{
imageData.Compression = Compression.CCITTFAX4;
}
using (MemoryStream stream = new MemoryStream(GetTiffImageBufferFromCCITTFaxDecode(imageData, dictionary.Stream.Value))) {
using (Tiff tiff = Tiff.ClientOpen("<INLINE>", "r", stream, new TiffStream())) {
if (tiff == null)
{
return(null);
}
int stride = tiff.ScanlineSize();
byte[] buffer = new byte[stride];
for (int i = 0; i < imageData.Height; i++)
{
tiff.ReadScanline(buffer, i);
Rectangle imgRect = new Rectangle(0, i, imageData.Width, 1);
BitmapData imgData = bitmap.LockBits(imgRect, ImageLockMode.WriteOnly, PixelFormat.Format1bppIndexed);
Marshal.Copy(buffer, 0, imgData.Scan0, buffer.Length);
bitmap.UnlockBits(imgData);
}
}
}
return(bitmap);
}
private static void DrawColorsAndColorSpaces(PdfPage page, PdfFont titleFont, PdfFont sectionFont, Stream iccStream)
{
PdfBrush brush = new PdfBrush();
page.Graphics.DrawString("Colors and colorspaces", titleFont, brush, 20, 50);
page.Graphics.DrawString("DeviceRGB", sectionFont, brush, 20, 70);
PdfPen rgbPen = new PdfPen(PdfRgbColor.DarkRed, 4);
PdfBrush rgbBrush = new PdfBrush(PdfRgbColor.LightGoldenrodYellow);
page.Graphics.DrawRectangle(rgbPen, rgbBrush, 20, 85, 250, 100);
page.Graphics.DrawString("DeviceCMYK", sectionFont, brush, 340, 70);
PdfPen cmykPen = new PdfPen(new PdfCmykColor(1, 0.5, 0, 0.1), 4);
PdfBrush cmykBrush = new PdfBrush(new PdfCmykColor(0, 0.5, 0.43, 0));
page.Graphics.DrawRectangle(cmykPen, cmykBrush, 340, 85, 250, 100);
page.Graphics.DrawString("DeviceGray", sectionFont, brush, 20, 200);
PdfPen grayPen = new PdfPen(new PdfGrayColor(0.1), 4);
PdfBrush grayBrush = new PdfBrush(new PdfGrayColor(0.75));
page.Graphics.DrawRectangle(grayPen, grayBrush, 20, 215, 250, 100);
page.Graphics.DrawString("Indexed", sectionFont, brush, 340, 200);
PdfIndexedColorSpace indexedColorSpace = new PdfIndexedColorSpace();
indexedColorSpace.ColorCount = 2;
indexedColorSpace.BaseColorSpace = new PdfRgbColorSpace();
indexedColorSpace.ColorTable = new byte[] { 192, 0, 0, 0, 0, 128 };
PdfIndexedColor indexedColor0 = new PdfIndexedColor(indexedColorSpace);
indexedColor0.ColorIndex = 0;
PdfIndexedColor indexedColor1 = new PdfIndexedColor(indexedColorSpace);
indexedColor1.ColorIndex = 1;
PdfPen indexedPen = new PdfPen(indexedColor0, 4);
PdfBrush indexedBrush = new PdfBrush(indexedColor1);
page.Graphics.DrawRectangle(indexedPen, indexedBrush, 340, 215, 250, 100);
page.Graphics.DrawString("CalGray", sectionFont, brush, 20, 330);
PdfCalGrayColorSpace calGrayColorSpace = new PdfCalGrayColorSpace();
PdfCalGrayColor calGrayColor1 = new PdfCalGrayColor(calGrayColorSpace);
calGrayColor1.Gray = 0.6;
PdfCalGrayColor calGrayColor2 = new PdfCalGrayColor(calGrayColorSpace);
calGrayColor2.Gray = 0.2;
PdfPen calGrayPen = new PdfPen(calGrayColor1, 4);
PdfBrush calGrayBrush = new PdfBrush(calGrayColor2);
page.Graphics.DrawRectangle(calGrayPen, calGrayBrush, 20, 345, 250, 100);
page.Graphics.DrawString("CalRGB", sectionFont, brush, 340, 330);
PdfCalRgbColorSpace calRgbColorSpace = new PdfCalRgbColorSpace();
PdfCalRgbColor calRgbColor1 = new PdfCalRgbColor(calRgbColorSpace);
calRgbColor1.Red = 0.1;
calRgbColor1.Green = 0.5;
calRgbColor1.Blue = 0.25;
PdfCalRgbColor calRgbColor2 = new PdfCalRgbColor(calRgbColorSpace);
calRgbColor2.Red = 0.6;
calRgbColor2.Green = 0.1;
calRgbColor2.Blue = 0.9;
PdfPen calRgbPen = new PdfPen(calRgbColor1, 4);
PdfBrush calRgbBrush = new PdfBrush(calRgbColor2);
page.Graphics.DrawRectangle(calRgbPen, calRgbBrush, 340, 345, 250, 100);
page.Graphics.DrawString("L*a*b", sectionFont, brush, 20, 460);
PdfLabColorSpace labColorSpace = new PdfLabColorSpace();
PdfLabColor labColor1 = new PdfLabColor(labColorSpace);
labColor1.L = 90;
labColor1.A = -40;
labColor1.B = 120;
PdfLabColor labColor2 = new PdfLabColor(labColorSpace);
labColor2.L = 45;
labColor2.A = 90;
labColor2.B = -34;
PdfPen labPen = new PdfPen(labColor1, 4);
PdfBrush labBrush = new PdfBrush(labColor2);
page.Graphics.DrawRectangle(labPen, labBrush, 20, 475, 250, 100);
page.Graphics.DrawString("Icc", sectionFont, brush, 340, 460);
PdfIccColorSpace iccColorSpace = new PdfIccColorSpace();
byte[] iccData = new byte[iccStream.Length];
iccStream.Read(iccData, 0, iccData.Length);
iccColorSpace.IccProfile = iccData;
iccColorSpace.AlternateColorSpace = new PdfRgbColorSpace();
iccColorSpace.ColorComponents = 3;
PdfIccColor iccColor1 = new PdfIccColor(iccColorSpace);
iccColor1.ColorComponents = new double[] { 0.45, 0.1, 0.22 };
PdfIccColor iccColor2 = new PdfIccColor(iccColorSpace);
iccColor2.ColorComponents = new double[] { 0.21, 0.76, 0.31 };
PdfPen iccPen = new PdfPen(iccColor1, 4);
PdfBrush iccBrush = new PdfBrush(iccColor2);
page.Graphics.DrawRectangle(iccPen, iccBrush, 340, 475, 250, 100);
page.Graphics.DrawString("Separation", sectionFont, brush, 20, 590);
PdfExponentialFunction tintTransform = new PdfExponentialFunction();
tintTransform.Domain = new double[] { 0, 1 };
tintTransform.Range = new double[] { 0, 1, 0, 1, 0, 1, 0, 1 };
tintTransform.Exponent = 1;
tintTransform.C0 = new double[] { 0, 0, 0, 0 };
tintTransform.C1 = new double[] { 1, 0.5, 0, 0.1 };
PdfSeparationColorSpace separationColorSpace = new PdfSeparationColorSpace();
separationColorSpace.AlternateColorSpace = new PdfCmykColorSpace();
separationColorSpace.Colorant = "Custom Blue";
separationColorSpace.TintTransform = tintTransform;
PdfSeparationColor separationColor1 = new PdfSeparationColor(separationColorSpace);
separationColor1.Tint = 0.23;
PdfSeparationColor separationColor2 = new PdfSeparationColor(separationColorSpace);
separationColor2.Tint = 0.74;
PdfPen separationPen = new PdfPen(separationColor1, 4);
PdfBrush separationBrush = new PdfBrush(separationColor2);
page.Graphics.DrawRectangle(separationPen, separationBrush, 20, 605, 250, 100);
page.Graphics.DrawString("Pantone", sectionFont, brush, 340, 590);
PdfPen pantonePen = new PdfPen(PdfPantoneColor.ReflexBlue, 4);
PdfBrush pantoneBrush = new PdfBrush(PdfPantoneColor.RhodamineRed);
page.Graphics.DrawRectangle(pantonePen, pantoneBrush, 340, 605, 250, 100);
page.Graphics.CompressAndClose();
}
/// <summary>
/// Loads the image.
/// </summary>
private void LoadImage()
{
for (int i = 0; i < PNGID.Length; i++)
{
if (PNGID[i] != this.stream.ReadByte())
{
throw new PdfUnrecognizedImageFormatException("File is not a valid PNG.");
}
}
byte[] buffer = new byte[0x1000];
while (true)
{
int @int = GetInt(this.stream);
string s = GetString(this.stream);
if ((@int < 0) || !CheckMarker(s))
{
throw new PdfUnrecognizedImageFormatException("Corrupted PNG file.");
}
if ("IDAT".Equals(s))
{
while (@int != 0)
{
int count = this.stream.Read(buffer, 0, Math.Min(@int, 0x1000));
if (count <= 0)
{
return;
}
this.idat.Write(buffer, 0, count);
@int -= count;
}
}
else if (!"tRNS".Equals(s))
{
if ("IHDR".Equals(s))
{
this.width = GetInt(this.stream);
this.height = GetInt(this.stream);
this.bitDepth = this.stream.ReadByte();
this.colorType = this.stream.ReadByte();
this.stream.ReadByte();
this.stream.ReadByte();
this.interlaceMethod = this.stream.ReadByte();
}
else if ("PLTE".Equals(s))
{
if (this.colorType == 3)
{
List <byte> list = new List <byte>();
while (@int-- > 0)
{
list.Add((byte)this.stream.ReadByte());
}
list.ToArray();
PdfIndexedColorSpace space = new PdfIndexedColorSpace(this.GetColorspace(), (@int / 3) - 1, list.ToArray());
this.properties.Add(PdfName.ColorSpace, space);
}
else
{
Image.Skip(this.stream, @int);
}
}
else if ("pHYs".Equals(s))
{
int num9 = GetInt(this.stream);
int num10 = GetInt(this.stream);
if (this.stream.ReadByte() == 1)
{
this.dpiX = (int)((num9 * 0.0254f) + 0.5f);
this.dpiY = (int)((num10 * 0.0254f) + 0.5f);
}
else if (num10 != 0)
{
this.XYRatio = ((float)num9) / ((float)num10);
}
}
else if ("cHRM".Equals(s))
{
this.xW = ((float)GetInt(this.stream)) / 100000f;
this.yW = ((float)GetInt(this.stream)) / 100000f;
this.xR = ((float)GetInt(this.stream)) / 100000f;
this.yR = ((float)GetInt(this.stream)) / 100000f;
this.xG = ((float)GetInt(this.stream)) / 100000f;
this.yG = ((float)GetInt(this.stream)) / 100000f;
this.xB = ((float)GetInt(this.stream)) / 100000f;
this.yB = ((float)GetInt(this.stream)) / 100000f;
this.hasCHRM = ((((Math.Abs(this.xW) >= 0.0001f) && (Math.Abs(this.yW) >= 0.0001f)) && ((Math.Abs(this.xR) >= 0.0001f) && (Math.Abs(this.yR) >= 0.0001f))) && (((Math.Abs(this.xG) >= 0.0001f) && (Math.Abs(this.yG) >= 0.0001f)) && (Math.Abs(this.xB) >= 0.0001f))) && (Math.Abs(this.yB) >= 0.0001f);
}
else if ("sRGB".Equals(s))
{
int index = this.stream.ReadByte();
this.intent = intents[index];
this.gamma = 2.2f;
this.xW = 0.3127f;
this.yW = 0.329f;
this.xR = 0.64f;
this.yR = 0.33f;
this.xG = 0.3f;
this.yG = 0.6f;
this.xB = 0.15f;
this.yB = 0.06f;
this.hasCHRM = true;
}
else if ("gAMA".Equals(s))
{
int num13 = GetInt(this.stream);
if (num13 != 0)
{
this.gamma = 100000f / ((float)num13);
if (!this.hasCHRM)
{
this.xW = 0.3127f;
this.yW = 0.329f;
this.xR = 0.64f;
this.yR = 0.33f;
this.xG = 0.3f;
this.yG = 0.6f;
this.xB = 0.15f;
this.yB = 0.06f;
this.hasCHRM = true;
}
}
}
else if (!"iCCP".Equals(s))
{
if ("IEND".Equals(s))
{
return;
}
Image.Skip(this.stream, @int);
}
}
else
{
switch (this.colorType)
{
case 0:
if (@int >= 2)
{
@int -= 2;
int word = GetWord(this.stream);
if (this.bitDepth != 0x10)
{
this.properties.Add(PdfName.Mask, PdfArray.Convert(new int[] { word, word }));
break;
}
this.transRedGray = word;
}
break;
case 2:
if (@int >= 6)
{
@int -= 6;
int num5 = GetWord(this.stream);
int num6 = GetWord(this.stream);
int num7 = GetWord(this.stream);
if (this.bitDepth != 0x10)
{
this.properties.Add(PdfName.Mask, PdfArray.Convert(new int[] { num5, num5, num6, num6, num7, num7 }));
break;
}
this.transRedGray = num5;
this.transGreen = num6;
this.transBlue = num7;
}
break;
case 3:
if (@int > 0)
{
this.trans = new byte[@int];
for (int j = 0; j < @int; j++)
{
this.trans[j] = (byte)this.stream.ReadByte();
}
@int = 0;
}
break;
}
Image.Skip(this.stream, @int);
}
Image.Skip(this.stream, 4);
}
}
