/// <summary>
/// Gets the image.
/// For uncompressed palette images, this returns the XOR part of the entry.
/// For 32bit images and compressed images, this returns a bitmap with
/// alpha transparency.
/// </summary>
public Bitmap GetImage()
{
Stream data = GetImageData();
if (IsCompressed || ColorDepth != 32)
{
return(new Bitmap(data));
}
else
{
// new Bitmap() does not work with alpha-transparent .bmp's
// Therefore, we have to use our own little bitmap loader
return(AlphaTransparentBitmap.LoadAlphaTransparentBitmap(data));
}
}
/// <summary>
/// Exports the image as ARGB bitmap.
/// Note: if the bitmap is using the classic style (AND/XOR maps), any pixel
/// where the AND map isn't 0 is set to fully transparent.
/// </summary>
public Bitmap ExportArgbBitmap()
{
if (colorDepth == 32)
{
return(GetImage());
}
else if (isCompressed)
{
using (Bitmap image = GetImage()) {
return(image.Clone(new Rectangle(0, 0, width, height), PixelFormat.Format32bppArgb));
}
}
else
{
using (Bitmap mask = GetMaskImage(), image = GetImage()) {
return(AlphaTransparentBitmap.ConvertToAlphaTransparentBitmap(mask, image));
}
}
}