Method Compose

rEFIt_UEFI/libeg/XImage.cpp:237–251

Place Top image over this image at PosX,PosY * Lowest means final image is opaque * else transparency will be multiplied */

 * else transparency will be multiplied
 */
void XImage::Compose(INTN PosX, INTN PosY, const XImage& TopImage, bool Lowest, float topScale)
{
  EG_RECT OutPlace;
  OutPlace.XPos = PosX;
  OutPlace.YPos = PosY;
  OutPlace.Width = GetWidth();
  OutPlace.Height = GetHeight();

  EG_RECT Area;
  Area.XPos = 0;
  Area.YPos = 0;
  Area.Width = TopImage.GetWidth();
  Area.Height = TopImage.GetHeight();
  Compose(OutPlace, Area, TopImage, Lowest, topScale);
}
// TopScale is for scaling TopImage. = 0.f means no scale or = 1.f
// InPlace is a place in TopImage before scaling
void XImage::Compose(const EG_RECT& OutPlace, const EG_RECT& InPlace, const XImage& TopImage, bool Lowest, float TopScale)