private void initICCNotIndexed(Bitmap bmp, ICCBased icc)
{
BitmapData bmpData = bmp.LockBits(new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, bmp.PixelFormat);
byte[] buf = new byte[bmpData.Stride * bmpData.Height];
System.Runtime.InteropServices.Marshal.Copy(bmpData.Scan0, buf, 0, buf.Length);
_dict.Dictionary.AddItem("BitsPerComponent", new PDFNumber(8));
_dict.Dictionary.AddItem("ColorSpace", icc);
MemoryStream stream = _dict.GetStream();
if (icc.CountComponents == 4)
{
stream.Write(buf, 0, buf.Length);
}
else if (icc.CountComponents == 3)
{
for (int i = 0; i < bmp.Height; ++i)
{
for (int j = 0; j < bmp.Width; ++j)
{
stream.WriteByte(buf[i * bmpData.Stride + j * 3 + 2]);
stream.WriteByte(buf[i * bmpData.Stride + j * 3 + 1]);
stream.WriteByte(buf[i * bmpData.Stride + j * 3]);
}
}
}
else if (icc.CountComponents == 1)
{
for (int i = 0; i < bmp.Height; ++i)
{
for (int j = 0; j < bmp.Width; ++j)
{
stream.WriteByte(buf[i * bmpData.Stride + j]);
}
}
}
bmp.UnlockBits(bmpData);
}
private void initICC(Bitmap bmp)
{
int indexProperty = Array.IndexOf(bmp.PropertyIdList, 34675);
if (indexProperty == -1)
{
throw new PDFInvalidICCException();
}
ICCBased icc = new ICCBased(bmp.PropertyItems[indexProperty].Value);
switch (bmp.PixelFormat)
{
case PixelFormat.Format1bppIndexed:
case PixelFormat.Format4bppIndexed:
case PixelFormat.Format8bppIndexed:
case PixelFormat.Indexed:
initICCIndexed(bmp, icc);
break;
default:
initICCNotIndexed(bmp, icc);
break;
}
}
private void initICCIndexed(Bitmap bmp, ICCBased icc)
{
int index = 32;
switch (bmp.PixelFormat)
{
case PixelFormat.Format1bppIndexed:
index /= 1;
_dict.Dictionary.AddItem("BitsPerComponent", new PDFNumber(1));
break;
case PixelFormat.Format4bppIndexed:
index /= 4;
_dict.Dictionary.AddItem("BitsPerComponent", new PDFNumber(4));
break;
case PixelFormat.Indexed:
case PixelFormat.Format8bppIndexed:
index /= 8;
_dict.Dictionary.AddItem("BitsPerComponent", new PDFNumber(8));
break;
}
System.Drawing.Color[] colors = bmp.Palette.Entries;
byte[] buf;
if (icc.CountComponents == 4)
{
buf = new byte[colors.Length * 4];
for (int i = 0; i < colors.Length; ++i)
{
buf[i * 3] = colors[i].A;
buf[i * 3 + 1] = colors[i].R;
buf[i * 3 + 2] = colors[i].G;
buf[i * 3 + 3] = colors[i].B;
}
}
else
{
buf = new byte[colors.Length * 3];
for (int i = 0; i < colors.Length; ++i)
{
buf[i * 3] = colors[i].R;
buf[i * 3 + 1] = colors[i].G;
buf[i * 3 + 2] = colors[i].B;
}
}
PDFArray array = new PDFArray();
array.AddItem(new PDFName("Indexed"));
array.AddItem(icc);
array.AddItem(new PDFNumber(colors.Length - 1));
array.AddItem(new PDFString(buf, true));
_dict.Dictionary.AddItem("ColorSpace", array);
BitmapData bmpData = bmp.LockBits(new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, bmp.PixelFormat);
buf = new byte[bmpData.Stride * bmpData.Height];
System.Runtime.InteropServices.Marshal.Copy(bmpData.Scan0, buf, 0, buf.Length);
int countByte = (_width - _width % index) / index + 1;
if (_width % index == 0)
{
--countByte;
}
int width = _width - (countByte - 1) * index;
int countByteW = (width - width % (index / 4)) / (index / 4) + 1;
if (width % (index / 4) == 0)
{
--countByteW;
}
MemoryStream stream = _dict.GetStream();
for (int i = 0; i < _height; ++i)
{
stream.Write(buf, i * bmpData.Stride, (countByte - 1) * 4 + countByteW);
}
bmp.UnlockBits(bmpData);
}
