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SDLmm::PixelFormat(3) Library Functions Manual SDLmm::PixelFormat(3) NAME SDLmm::PixelFormat - SYNOPSIS #include <sdlmm_pixelformat.h> Public Methods PixelFormat (SDL_PixelFormat *pixelformat) Constructor from an SDL_PixelFormat*. virtual ~PixelFormat () The destructor. Uint8 BitsPerPixel () const Uint8 BytesPerPixel () const Uint8 Rshift () const Uint8 Gshift () const Uint8 Bshift () const Uint8 Rloss () const Uint8 Gloss () const Uint8 Bloss () const Uint8 Aloss () const Uint32 Rmask () const Uint32 Gmask () const Uint32 Bmask () const Uint32 Amask () const Color colorkey () const Uint8 alpha () const SDL_Palette* palette () const Color MapRGB (Uint8 r, Uint8 g, Uint8 b) const Map a RGB color value to a pixel format. Color MapRGB (const ColorRGB &colorrgb) const Color MapRGBA (Uint8 r, Uint8 g, Uint8 b, Uint8 a) const Map a RGBA color value to a pixel format. Color MapRGBA (const ColorRGBA &colorrgba) const void GetRGB (Color pixel, Uint8 &r, Uint8 &g, Uint8 &b) const Get RGB values from a pixel in the pixel format of this PixelFormat. const ColorRGB GetRGB (Color pixel) const void GetRGBA (Color pixel, Uint8 &r, Uint8 &g, Uint8 &b, Uint8 &a) const Get RGBA values from a pixel in the pixel format of this PixelFormat. const ColorRGBA GetRGBA (Color pixel) const Informational methods bool valid () const Returns true if this PixelFormat is initialized, false otherwise. Protected Attributes SDL_PixelFormat* me The actual SDL_PixelFormat for this PixelFormat. DETAILED DESCRIPTION Author: Adam Gates CONSTRUCTOR & DESTRUCTOR DOCUMENTATION SDLmm::PixelFormat::PixelFormat (SDL_PixelFormat * pixelformat) [inline, ex- plicit] Constructor from an SDL_PixelFormat*. This creates a new PixelFormat object from an existing SDL_PixelFormat. It's very important not to free the original pixel format since that will cause problems. Use with caution. SDLmm::PixelFormat::~PixelFormat () [inline, virtual] The destructor. MEMBER FUNCTION DOCUMENTATION Uint8 SDLmm::PixelFormat::Aloss () const [inline] Uint32 SDLmm::PixelFormat::Amask () const [inline] Uint8 SDLmm::PixelFormat::BitsPerPixel () const [inline] Uint8 SDLmm::PixelFormat::Bloss () const [inline] Uint32 SDLmm::PixelFormat::Bmask () const [inline] Uint8 SDLmm::PixelFormat::Bshift () const [inline] Uint8 SDLmm::PixelFormat::BytesPerPixel () const [inline] const ColorRGB SDLmm::PixelFormat::GetRGB (Color pixel) const [inline] void SDLmm::PixelFormat::GetRGB (Color pixel, Uint8 & r, Uint8 & g, Uint8 & b) const Get RGB values from a pixel in the pixel format of this PixelFormat. This function uses the entire 8-bit [0..255] range when converting color components from pixel formats with less than 8-bits per RGB component (e.g., a completely white pixel in 16-bit RGB565 format would return [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]). Parameters: pixel the pixel value r, g, b references to integers where the RGB result will be stored. See also: GetRGBA, MapRGB, MapRGBA const ColorRGBA SDLmm::PixelFormat::GetRGBA (Color pixel) const [inline] void SDLmm::PixelFormat::GetRGBA (Color pixel, Uint8 & r, Uint8 & g, Uint8 & b, Uint8 & a) const Get RGBA values from a pixel in the pixel format of this PixelFormat. This function uses the entire 8-bit [0..255] range when converting color components from pixel formats with less than 8-bits per RGB component (e.g., a completely white pixel in 16-bit RGB565 format would return [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]). Note: If the PixelFormat has no alpha component, the alpha will be returned as 0xff (100% opaque). Parameters: pixel the pixel value r, g, b, a references to integers where the RGBA result will be stored. See also: GetRGB, MapRGB, MapRGBA Uint8 SDLmm::PixelFormat::Gloss () const [inline] Uint32 SDLmm::PixelFormat::Gmask () const [inline] Uint8 SDLmm::PixelFormat::Gshift () const [inline] Color SDLmm::PixelFormat::MapRGB (const ColorRGB & colorrgb) const [inline] Color SDLmm::PixelFormat::MapRGB (Uint8 r, Uint8 g, Uint8 b) const Map a RGB color value to a pixel format. Maps the RGB color value to this PixelFormat's pixel format and returns the pixel value as a 32-bit int. If the format has a palette (8-bit) the index of the closest matching color in the palette will be returned. If the specified pixel format has an alpha component it will be returned as all 1 bits (fully opaque). Returns: A pixel value best approximating the given RGB color value for a given pixel format. If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e.g., with a 16-bpp format the return value can be assigned to a Uint16, and similarly a Uint8 for an 8-bpp format). Parameters: r, g, b the RGB values. See also: GetRGB, GetRGBA, MapRGBA Color SDLmm::PixelFormat::MapRGBA (const ColorRGBA & colorrgba) const [in- line] Color SDLmm::PixelFormat::MapRGBA (Uint8 r, Uint8 g, Uint8 b, Uint8 a) const Map a RGBA color value to a pixel format. Maps the RGBA color value to this PixelFormat's pixel format and returns the pixel value as a 32-bit int. If the format has a palette (8-bit) the index of the closest matching color in the palette will be returned. If the specified pixel format has no alpha component the alpha value will be ignored (as it will be in formats with a palette). Returns: A pixel value best approximating the given RGBA color value for a given pixel format. If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e.g., with a 16-bpp format the return value can be assigned to a Uint16, and similarly a Uint8 for an 8-bpp format). Parameters: r, g, b, a the RGBA values. See also: GetRGB, GetRGBA, MapRGB Uint8 SDLmm::PixelFormat::Rloss () const [inline] Uint32 SDLmm::PixelFormat::Rmask () const [inline] Uint8 SDLmm::PixelFormat::Rshift () const [inline] Uint8 SDLmm::PixelFormat::alpha () const [inline] Color SDLmm::PixelFormat::colorkey () const [inline] SDL_Palette * SDLmm::PixelFormat::palette () const [inline] bool SDLmm::PixelFormat::valid () const [inline] Returns true if this PixelFormat is initialized, false otherwise. Warning: Using an uninitialzied PixelFormat can cause many problems. MEMBER DATA DOCUMENTATION SDL_PixelFormat * SDLmm::PixelFormat::me [protected] The actual SDL_PixelFormat for this PixelFormat. AUTHOR Generated automatically by Doxygen for SDLmm from the source code. SDLmm 16 Jul 2001 SDLmm::PixelFormat(3)
NAME | SYNOPSIS | DETAILED DESCRIPTION | CONSTRUCTOR & DESTRUCTOR DOCUMENTATION | MEMBER FUNCTION DOCUMENTATION | MEMBER DATA DOCUMENTATION | AUTHOR
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