/// <summary>
/// Creates a ScaledBitmap from the given original bitmap and replace it's transparent pixels with the
/// given new color.
/// </summary>
/// <param name="originalBmp">The original bitmap.</param>
/// <param name="transparentColor">The selected transparent color on the original bitmap.</param>
/// <param name="replaceTo">
/// The transparent pixels on the original bitmap will be replaced with this color.
/// </param>
/// <returns>The created ScaledBitmap.</returns>
/// <remarks>Disposing originalBmp is the responsibility of the caller.</remarks>
public static ScaledBitmap FromBitmap(Bitmap originalBmp, Color transparentColor, Color replaceTo)
{
if (null == originalBmp)
{
throw new ArgumentNullException("originalBmp");
}
if (PixelFormat.Format24bppRgb != originalBmp.PixelFormat)
{
throw new ArgumentException("Pixel format of the given Bitmap must be PixelFormat.Format24bppRgb",
"originalBmp");
/// TODO: implement other pixel format support (?)
}
ScaledBitmap original = ScaledBitmap.FromBitmap(originalBmp);
ScaledBitmap retBmp = new ScaledBitmap(original.Width, original.Height);
BitmapAccess retBmpAccess = BitmapAccess.FromBitmap(retBmp);
retBmpAccess.Clear(replaceTo);
original.MakeTransparent(transparentColor);
retBmpAccess.DrawBitmap(original, 0, 0);
retBmpAccess.Dispose();
original.Dispose();
return(retBmp);
}
/// <summary>
/// Creates a ScaledBitmap from the given original bitmap and replace it's transparent pixels with the
/// pixels of another bitmap.
/// </summary>
/// <param name="originalBmp">The original bitmap.</param>
/// <param name="transparentColor">The selected transparent color on the original bitmap.</param>
/// <param name="replaceTo">
/// The transparent pixels on the original bitmap will be replaced with the pixels of this bitmap.
/// </param>
/// <returns>The created ScaledBitmap.</returns>
/// <remarks>Disposing originalBmp and replaceTo is the responsibility of the caller.</remarks>
public static ScaledBitmap FromBitmap(Bitmap originalBmp, Color transparentColor, Bitmap replaceTo)
{
if (null == originalBmp)
{
throw new ArgumentNullException("originalBmp");
}
if (null == replaceTo)
{
throw new ArgumentNullException("replaceTo");
}
if (PixelFormat.Format24bppRgb != originalBmp.PixelFormat || PixelFormat.Format24bppRgb != replaceTo.PixelFormat)
{
throw new ArgumentException("Pixel format of the given Bitmaps must be PixelFormat.Format24bppRgb");
/// TODO: implement other pixel format support (?)
}
ScaledBitmap original = ScaledBitmap.FromBitmap(originalBmp);
ScaledBitmap replaceToBmp = ScaledBitmap.FromBitmap(replaceTo);
ScaledBitmap retBmp = new ScaledBitmap(original.Width, original.Height);
BitmapAccess retBmpAccess = BitmapAccess.FromBitmap(retBmp);
for (int currX = 0; currX < retBmp.Width; currX = currX + replaceTo.Width)
{
for (int currY = 0; currY < retBmp.Height; currY = currY + replaceTo.Height)
{
retBmpAccess.DrawBitmap(replaceToBmp, currX, currY);
}
}
original.MakeTransparent(transparentColor);
retBmpAccess.DrawBitmap(original, 0, 0);
retBmpAccess.Dispose();
original.Dispose();
replaceToBmp.Dispose();
return(retBmp);
}
