public override void ReadData(IDjvuReader reader)
{
DataOffset = reader.Position;
Width = reader.ReadUInt16BigEndian();
Height = reader.ReadUInt16BigEndian();
MinorVersion = reader.ReadByte();
MajorVersion = reader.ReadByte();
DPI = reader.ReadUInt16(); // LSB
Gamma = (float)reader.ReadByte() / 10;
byte flag = reader.ReadByte();
switch (flag & 0x7)
{
case 6:
PageRotation = PageRotation.CounterClockwise;
break;
case 2:
PageRotation = PageRotation.UpsideDown;
break;
case 5:
PageRotation = PageRotation.Clockwise;
break;
default:
PageRotation = PageRotation.RightSideUp;
break;
}
}
public Vector2 PageToDevice(int startX, int startY, int sizeX, int sizeY, PageRotation rotation, int pageX, int pageY)
{
int deviceX;
int deviceY;
FPDF_PageToDevice(m_NativePointer, startX, startY, sizeX, sizeY, (int)rotation, pageX, pageY, out deviceX,
out deviceY);
return(new Vector2(deviceX, deviceY));
}
public Vector2 DeviceToPage(int startX, int startY, int sizeX, int sizeY, PageRotation rotation, int deviceX, int deviceY)
{
double pageX;
double pageY;
FPDF_DeviceToPage(m_NativePointer, startX, startY, sizeX, sizeY, (int)rotation, deviceX, deviceY, out pageX,
out pageY);
return(new Vector2((float)pageX, (float)pageY));
}
private void SetPageRotate(PageRotation pr)
{
switch (pr)
{
case PageRotation.Rotate0: rotateAngle = 0.0F; break;
case PageRotation.Rotate90: rotateAngle = 90.0F; break;
case PageRotation.Rotate180: rotateAngle = 180.0F; break;
case PageRotation.Rotate270: rotateAngle = 270.0F; break;
default: rotateAngle = 0; break;
}
}
