/**
* Extracts the image data from the Image.
*
* @param image The image for which to extract the content
* @return The raw image data, not formated
* @throws DocumentException If an error occurs accessing the image content
*/
private byte[][] GetImageData(Image image)
{
int WMF_PLACEABLE_HEADER_SIZE = 22;
RtfByteArrayBuffer bab = new RtfByteArrayBuffer();
try {
if (imageType == Image.ORIGINAL_BMP)
{
bab.Append(MetaDo.WrapBMP(image));
}
else
{
byte[] iod = image.OriginalData;
if (iod == null)
{
Stream imageIn = WebRequest.Create(image.Url).GetResponse().GetResponseStream();
if (imageType == Image.ORIGINAL_WMF) //remove the placeable header first
{
for (int k = 0; k < WMF_PLACEABLE_HEADER_SIZE; k++)
{
if (imageIn.ReadByte() < 0)
{
throw (new IOException("while removing wmf placeable header"));
}
}
}
bab.Write(imageIn);
imageIn.Close();
}
else
{
if (imageType == Image.ORIGINAL_WMF)
{
//remove the placeable header
bab.Write(iod, WMF_PLACEABLE_HEADER_SIZE, iod.Length - WMF_PLACEABLE_HEADER_SIZE);
}
else
{
bab.Append(iod);
}
}
}
return(bab.ToArrayArray());
} catch (IOException ioe) {
throw new DocumentException(ioe.Message);
}
}
/**
* Extracts the image data from the Image. The data is formated for direct inclusion
* in a rtf document
*
* @param image The Image for which to extract the content
* @return The image data formated for the rtf document
* @throws DocumentException If an error occurs accessing the image content
*/
private byte[] GetImage(Image image)
{
MemoryStream imageTemp = new MemoryStream();
try {
Stream imageIn;
if (imageType == Image.ORIGINAL_BMP)
{
imageIn = new MemoryStream(MetaDo.WrapBMP(image));
}
else
{
if (image.OriginalData == null)
{
imageIn = WebRequest.Create(image.Url).GetResponse().GetResponseStream();
}
else
{
imageIn = new MemoryStream(image.OriginalData);
}
if (imageType == Image.ORIGINAL_WMF) //remove the placeable header
{
Image.Skip(imageIn, 22);
}
}
int buffer = 0;
int count = 0;
while ((buffer = imageIn.ReadByte()) != -1)
{
String helperStr = buffer.ToString("X2");
byte[] t = DocWriter.GetISOBytes(helperStr);
imageTemp.Write(t, 0, t.Length);
count++;
if (count == 64)
{
imageTemp.WriteByte((byte)'\n');
count = 0;
}
}
} catch (IOException ioe) {
throw new DocumentException(ioe.ToString());
}
return(imageTemp.ToArray());
}