public static BitmapSource AlphaBlend(BitmapSource Source, byte Threshold)
{
EditableBitmapImage eb = new EditableBitmapImage(Source);
System.Windows.Media.Color first = eb.GetPixel(0, 0);
if (first.A != 255)
{
return(eb);
}
for (int y = 0; y < Source.PixelHeight; y++)
{
for (int x = 0; x < Source.PixelWidth; x++)
{
System.Windows.Media.Color pixel = eb.GetPixel(x, y);
if (pixel.B <= Threshold && pixel.G <= Threshold && pixel.R <= Threshold && pixel.A == 255)
{
eb.SetPixel(x, y, Color.FromArgb(0, 0, 0, 0));
}
}
}
return(eb);
}
public void Open(System.IO.Stream Source)
{
File iconFile = new File();
iconFile.Read(Source);
foreach (Frame iconFrame in iconFile.Frames)
{
System.Windows.Media.Imaging.BitmapFrame frame = null;
if (iconFrame.type == FrameType.BITMAP)
{
if (iconFrame.iconImage.icHeader.biBitCount == 32)
{
byte[] pixels = iconFrame.iconImage.icXOR;
pixels = Utilities.FlipYBuffer(pixels, iconFrame.Width, iconFrame.Height, iconFrame.iconImage.XorStride);
BitmapSource bp = BitmapSource.Create(iconFrame.Width, iconFrame.Height, 96, 96, PixelFormats.Bgra32, null, pixels, iconFrame.iconImage.XorStride);
frame = BitmapFrame.Create(bp);
}
else if (iconFrame.iconImage.icHeader.biBitCount == 24)
{
byte[] pixels = iconFrame.iconImage.icXOR;
pixels = Utilities.FlipYBuffer(pixels, iconFrame.Width, iconFrame.Height, iconFrame.iconImage.XorStride);
BitmapSource bp = BitmapSource.Create(iconFrame.Width, iconFrame.Height, 96, 96, PixelFormats.Bgr24, null, pixels, iconFrame.iconImage.XorStride);
frame = BitmapFrame.Create(bp);
}
else if (iconFrame.iconImage.icHeader.biBitCount == 8)
{
byte[] pixels = iconFrame.iconImage.icXOR;
pixels = Utilities.FlipYBuffer(pixels, iconFrame.Width, iconFrame.Height, iconFrame.iconImage.XorStride);
BitmapSource bp = BitmapSource.Create(iconFrame.Width, iconFrame.Height, 96, 96, PixelFormats.Indexed8, GetPalette(iconFrame.iconImage.icColors, true), pixels, iconFrame.iconImage.XorStride);
frame = BitmapFrame.Create(bp);
}
else if (iconFrame.iconImage.icHeader.biBitCount == 4)
{
byte[] pixels = iconFrame.iconImage.icXOR;
pixels = Utilities.FlipYBuffer(pixels, iconFrame.Width, iconFrame.Height, iconFrame.iconImage.XorStride);
BitmapSource bp = BitmapSource.Create(iconFrame.Width, iconFrame.Height, 96, 96, PixelFormats.Indexed4, GetPalette(iconFrame.iconImage.icColors, true), pixels, iconFrame.iconImage.XorStride);
frame = BitmapFrame.Create(bp);
}
else
{
try
{
byte[] pixels = iconFrame.iconImage.icXOR;
pixels = Utilities.FlipYBuffer(pixels, iconFrame.Width, iconFrame.Height, iconFrame.iconImage.XorStride);
BitmapSource bp = BitmapSource.Create(iconFrame.Width, iconFrame.Height, 96, 96, PixelFormats.Indexed1, GetPalette(iconFrame.iconImage.icColors, true), pixels, iconFrame.iconImage.XorStride);
frame = BitmapFrame.Create(bp);
}
catch { continue; }
}
if (iconFrame.iconImage.icAND?.Length > 0)
{
RGBQUAD[] palette = new RGBQUAD[2] {
RGBQUAD.FromRGBA(0, 0, 0, 0), RGBQUAD.FromRGBA(255, 255, 255, 255)
};
byte[] pixels = iconFrame.iconImage.icAND;
pixels = Utilities.FlipYBuffer(pixels, iconFrame.Width, iconFrame.Height, iconFrame.iconImage.AndStride);
BitmapSource AND = BitmapSource.Create(iconFrame.Width, iconFrame.Height,
96, 96, PixelFormats.Indexed1, GetPalette(palette, true), pixels, iconFrame.iconImage.AndStride);
EditableBitmapImage editableXOR = new EditableBitmapImage(frame);
EditableBitmapImage editableAND = new EditableBitmapImage(AND);
for (int x = 0; x < editableXOR.PixelWidth; x++)
{
for (int y = 0; y < editableXOR.PixelHeight; y++)
{
Color px = editableAND.GetPixel(x, y);
if (px == Colors.White)
{
Color c = editableXOR.GetPixel(x, y);
c.A = 0;
editableXOR.SetPixel(x, y, c);
}
}
}
if (frame.Format.BitsPerPixel == 32)
{
// Do nothing
}
else if (frame.Format.BitsPerPixel == 24)
{
frame = BitmapFrame.Create(editableXOR);
}
else if (frame.Format.BitsPerPixel == 8)
{
BitmapSource s = Helpers.Get8BitImage(editableXOR);
frame = BitmapFrame.Create(s);
}
else if (frame.Format.BitsPerPixel == 4)
{
BitmapSource s = Helpers.Get4BitImage(editableXOR);
frame = BitmapFrame.Create(s);
}
}
}
else
{
try
{
PngBitmapDecoder decoder = new PngBitmapDecoder(new System.IO.MemoryStream(iconFrame.pngBuffer), BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
frame = decoder.Frames[0];
}
catch
{
frame = BitmapFrame.Create(CreateEmptyBitmap(iconFrame.Width));
}
}
_Frames.Add(frame);
}
}
