Class XImage

rEFIt_UEFI/libeg/XImage.h:42–112

typedef struct { UINTN Xpos; UINTN Ypos; UINTN Width; UINTN Height; } EgRect; */

} EgRect;
*/
class XImage
{
protected:
  size_t      Width; //may be better to use INTN - signed integer as it always compared with expressions
  size_t      Height;
  XArray<EFI_GRAPHICS_OUTPUT_BLT_PIXEL> PixelData;
 
public:
  XImage() : Width(0), Height(0), PixelData() {};
  XImage(UINTN W, UINTN H);
  XImage(const XImage& Image, float scale = 0.f); //the constructor can accept 0 scale as 1.f
  virtual ~XImage();

  XImage& operator= (const XImage& other);

protected:
  UINTN GetSizeInBytes() const;  //in bytes

public:

  void setSizeInPixels(UINTN W, UINTN H);

  const XArray<EFI_GRAPHICS_OUTPUT_BLT_PIXEL>& GetData() const;

  const EFI_GRAPHICS_OUTPUT_BLT_PIXEL& GetPixel(INTN x, INTN y) const;
  const EFI_GRAPHICS_OUTPUT_BLT_PIXEL* GetPixelPtr(INTN x, INTN y) const ;
  EFI_GRAPHICS_OUTPUT_BLT_PIXEL* GetPixelPtr(INTN x, INTN y);
  INTN      GetWidth() const { return (INTN)Width; }
  INTN      GetHeight() const { return (INTN)Height; }

  void setZero() { SetMem( (void*)GetPixelPtr(0, 0), GetSizeInBytes(), 0); }

  void setEmpty() { Width=0; Height=0; PixelData.setEmpty(); }
  bool isEmpty() const { return PixelData.size() == 0; }


  void Fill(const EFI_GRAPHICS_OUTPUT_BLT_PIXEL& Color = { 0, 0, 0, 0 });
  void Fill(const EG_PIXEL* Color);
  void FillArea(const EG_PIXEL* Color, EG_RECT& Rect);
  void FillArea(const EFI_GRAPHICS_OUTPUT_BLT_PIXEL& Color, EG_RECT& Rect);
  void Copy(XImage* Image);
  void CopyScaled(const XImage& Image, float scale = 0.f);
  void CopyRect(const XImage& Image, INTN X, INTN Y);
  void CopyRect(const XImage& Image, const EG_RECT& OwnPlace, const EG_RECT& InputRect);
  void Compose(const EG_RECT& OwnPlace, const EG_RECT& InputRect, const XImage& TopImage, bool Lowest, float TopScale = 0.f);
  void Compose(INTN PosX, INTN PosY, const XImage& TopImage, bool Lowest, float topScale = 0); //instead of compose we often can Back.Draw(...) + Top.Draw(...)
  void FlipRB();
  EFI_STATUS FromPNG(const UINT8 * Data, UINTN Lenght);
  EFI_STATUS ToPNG(UINT8** Data, UINTN& OutSize);
  EFI_STATUS FromSVG(const CHAR8 *SVGData, float scale);
  EFI_STATUS FromICNS(IN UINT8 *FileData, IN UINTN FileDataLength, IN UINTN IconSize);

  void GetArea(const EG_RECT& Rect);
  void GetArea(INTN x, INTN y, UINTN W, UINTN H);
  void Draw(INTN x, INTN y, float scale, bool Opaque);
  void Draw(INTN x, INTN y, float scale); //can accept 0 scale as 1.f
  void Draw(INTN x, INTN y); 
  void DrawWithoutCompose(INTN x, INTN y, UINTN width = 0, UINTN height = 0);