Method LoadFontImage

rEFIt_UEFI/libeg/text.cpp:86–171

    *Height = ScaledHeight;
}
void XTheme::LoadFontImage(IN BOOLEAN UseEmbedded, IN INTN Rows, IN INTN Cols)
{
  EFI_STATUS Status = EFI_NOT_FOUND;
  XImage      NewImage; //tempopary image from file

  INTN        ImageWidth, ImageHeight;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *PixelPtr;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL *FontPtr;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL FirstPixel;
  BOOLEAN     isKorean = (gLanguage == korean);
  XStringW    fontFilePath;
  const XStringW& commonFontDir = L"EFI\\CLOVER\\font"_XSW;

  if (IsEmbeddedTheme() && !isKorean) { //or initial screen before theme init
    Status = NewImage.FromPNG(ACCESS_EMB_DATA(emb_font_data), ACCESS_EMB_SIZE(emb_font_data)); //always success
    MsgLog("Using embedded font\n");
  } else if (isKorean){
    Status = NewImage.LoadXImage(ThemeDir, L"FontKorean.png"_XSW);
    MsgLog("Loading korean font from ThemeDir: %s\n", efiStrError(Status));
    if (!EFI_ERROR(Status)) {
      CharWidth = 22; //standard for korean
    } else {
      MsgLog("...using english\n");
      gLanguage = english;
    }
  }

  if (EFI_ERROR(Status)) {
    //not loaded, use common
    Rows = 16; //standard for english
    Cols = 16;
    Status = NewImage.LoadXImage(ThemeDir, FontFileName);
  }

  if (EFI_ERROR(Status)) {
    //then take from common font folder
//    fontFilePath = SWPrintf(L"%s\\%s", commonFontDir, isKorean ? L"FontKorean.png" : ThemeX.FontFileName.data());
    fontFilePath = commonFontDir + FontFileName;
    Status = NewImage.LoadXImage(SelfRootDir, fontFilePath);
    //else use embedded even if it is not embedded
    if (EFI_ERROR(Status)) {
      Status = NewImage.FromPNG(ACCESS_EMB_DATA(emb_font_data), ACCESS_EMB_SIZE(emb_font_data));
    }
    if (EFI_ERROR(Status)) {
      MsgLog("No font found!\n");
      return;
    }
  }

  ImageWidth = NewImage.GetWidth();
  //  DBG("ImageWidth=%lld\n", ImageWidth);
  ImageHeight = NewImage.GetHeight();
  //  DBG("ImageHeight=%lld\n", ImageHeight);
  PixelPtr = NewImage.GetPixelPtr(0,0);

  FontImage.setSizeInPixels(ImageWidth * Rows, ImageHeight / Rows);
  FontPtr = FontImage.GetPixelPtr(0,0);