/// <param name="size">The size of the image stored in the binary data.</param>
/// <param name="bits"></param>
/// <param name="bitsPerChannel"></param>
/// <param name="position">The position and size at which the image is to
/// be rendered.</param>
/// <returns></returns>
public string AddImage(
Size size,
byte[] bits, int bitsPerChannel,
Rectangle position)
{
// If the image is a JPEG then store it as a single image. If it's
// a PNG then separate its RGB channels from its alpha channel and
// create one image for each, with the alpha image being the soft
// mask of the RGB image.
string name = null;
if (Image.IsPng(bits))
{
byte[] rgb;
byte[] alpha;
Image.SeparateAlphaChannel(bits, out rgb, out alpha);
// Store the alpha mask, if there is one
Image mask = null;
if (alpha != null)
{
string maskName = "Im" + (_images.Count + 1);
mask = new Image(maskName, alpha, bitsPerChannel, size, position, ColorSpace.DeviceGray, Filter.Flate, null);
_images.Add(mask);
}
// Store the colour data, with a reference to the mask
name = "Im" + (_images.Count + 1);
Image image = new Image(name, rgb, bitsPerChannel, size, position, ColorSpace.DeviceRGB, Filter.Flate, mask);
_images.Add(image);
}
else
{
// Store the full image
name = "Im" + (_images.Count + 1);
Image image = new Image(name, bits, bitsPerChannel, size, position, ColorSpace.DeviceRGB, Filter.DCT, null);
_images.Add(image);
}
// Create a content fragment to show the image on the page. For JPEGs the
// fragment refers to the full image, of course, and for PNGs it refers
// to the main RGB image.
ImageFragment frag = new ImageFragment(name, position);
_content.Add(frag);
return(name);
}
public void AddImage(string name, Rectangle position)
{
ImageFragment frag = new ImageFragment(name, position);
_content.Add(frag);
}