GOColor

## GOColor GOColor |

## Synopsis

    typedef             GOColor;
                        GONamedColor;
    #define             GO_COLOR_FROM_GDK                   (c)
    #define             GO_COLOR_FROM_RGB                   (r,
                                                             g,
                                                             b)
    #define             GO_COLOR_FROM_RGBA                  (r,
                                                             g,
                                                             b,
                                                             a)
    #define             GO_COLOR_WHITE
    #define             GO_COLOR_BLACK
    #define             GO_COLOR_RED
    #define             GO_COLOR_GREEN
    #define             GO_COLOR_BLUE
    #define             GO_COLOR_YELLOW
    #define             GO_COLOR_VIOLET
    #define             GO_COLOR_CYAN
    #define             GO_COLOR_GREY                       (x)
    #define             GO_COLOR_UINT_R                     (x)
    #define             GO_COLOR_UINT_G                     (x)
    #define             GO_COLOR_UINT_B                     (x)
    #define             GO_COLOR_UINT_A                     (x)
    #define             GO_COLOR_CHANGE_R                   (x,
                                                             r)
    #define             GO_COLOR_CHANGE_G                   (x,
                                                             g)
    #define             GO_COLOR_CHANGE_B                   (x,
                                                             b)
    #define             GO_COLOR_CHANGE_A                   (x,
                                                             a)
    #define             GO_COLOR_TO_RGB                     (u,
                                                             r,
                                                             g,
                                                             b)
    #define             GO_COLOR_TO_RGBA                    (u,
                                                             r,
                                                             g,
                                                             b,
                                                             a)
    #define             GO_COLOR_MONO_INTERPOLATE           (v1,
                                                             v2,
                                                             t)
    #define             GO_COLOR_INTERPOLATE                (c1,
                                                             c2,
                                                             t)
    #define             GO_COLOR_DOUBLE_R                   (x)
    #define             GO_COLOR_DOUBLE_G                   (x)
    #define             GO_COLOR_DOUBLE_B                   (x)
    #define             GO_COLOR_DOUBLE_A                   (x)
    #define             GO_COLOR_TO_CAIRO                   (x)
    gboolean            go_color_from_str                   (char const *str,
                                                             GOColor *res);
    gchar *             go_color_as_str                     (GOColor color);
    PangoAttribute *    go_color_to_pango                   (GOColor color,
                                                             gboolean is_fore);
    GdkColor *          go_color_to_gdk                     (GOColor color,
                                                             GdkColor *res);

## Description

## Details

### GOColor

    typedef guint32					GOColor;

### GONamedColor

    typedef struct {
    	GOColor		 color;
    	char const 	*name; /* english name - eg. "white" */
    } GONamedColor;

### GO_COLOR_FROM_GDK()

    #define GO_COLOR_FROM_GDK(c) GO_COLOR_FROM_RGBA(((c).red>>8), ((c).green>>8), ((c).blue>>8), 0xff)

`c` : |

### GO_COLOR_FROM_RGB()

    #define GO_COLOR_FROM_RGB(r,g,b) ((((guint)(r&0xff))<<24)|(((guint)(g&0xff))<<16)|((guint)(b&0xff)<<8)|0xff)

`r` : |
`g` : |
`b` : |

### GO_COLOR_FROM_RGBA()

    #define GO_COLOR_FROM_RGBA(r,g,b,a) ((((guint)(r&0xff))<<24)|(((guint)(g&0xff))<<16)|((guint)(b&0xff)<<8)|(guint)(a&0xff))

`r` : |
`g` : |
`b` : |
`a` : |

### GO_COLOR_WHITE

    #define GO_COLOR_WHITE  GO_COLOR_FROM_RGB(0xff, 0xff, 0xff)

### GO_COLOR_BLACK

    #define GO_COLOR_BLACK   GO_COLOR_FROM_RGB(0x00, 0x00, 0x00)

### GO_COLOR_RED

    #define GO_COLOR_RED     GO_COLOR_FROM_RGB(0xff, 0x00, 0x00)

### GO_COLOR_GREEN

    #define GO_COLOR_GREEN   GO_COLOR_FROM_RGB(0x00, 0xff, 0x00)

### GO_COLOR_BLUE

    #define GO_COLOR_BLUE   GO_COLOR_FROM_RGB(0x00, 0x00, 0xff)

### GO_COLOR_YELLOW

    #define GO_COLOR_YELLOW  GO_COLOR_FROM_RGB(0xff, 0xff, 0x00)

### GO_COLOR_VIOLET

    #define GO_COLOR_VIOLET  GO_COLOR_FROM_RGB(0xff, 0x00, 0xff)

### GO_COLOR_CYAN

    #define GO_COLOR_CYAN    GO_COLOR_FROM_RGB(0x00, 0xff, 0xff)

### GO_COLOR_GREY()

    #define GO_COLOR_GREY(x) GO_COLOR_FROM_RGB(x,x,x)

`x` : |

### GO_COLOR_UINT_R()

    #define GO_COLOR_UINT_R(x) (((guint)(x))>>24)

`x` : |

### GO_COLOR_UINT_G()

    #define GO_COLOR_UINT_G(x) ((((guint)(x))>>16)&0xff)

`x` : |

### GO_COLOR_UINT_B()

    #define GO_COLOR_UINT_B(x) ((((guint)(x))>>8)&0xff)

`x` : |

### GO_COLOR_UINT_A()

    #define GO_COLOR_UINT_A(x) (((guint)(x))&0xff)

`x` : |

### GO_COLOR_CHANGE_R()

    #define GO_COLOR_CHANGE_R(x, r) (((x)&(~(0xff<<24)))|(((r)&0xff)<<24))

`x` : |
`r` : |

### GO_COLOR_CHANGE_G()

    #define GO_COLOR_CHANGE_G(x, g) (((x)&(~(0xff<<16)))|(((g)&0xff)<<16))

`x` : |
`g` : |

### GO_COLOR_CHANGE_B()

    #define GO_COLOR_CHANGE_B(x, b) (((x)&(~(0xff<<8)))|(((b)&0xff)<<8))

`x` : |
`b` : |

### GO_COLOR_CHANGE_A()

    #define GO_COLOR_CHANGE_A(x, a) (((x)&(~0xff))|((a)&0xff))

`x` : |
`a` : |

### GO_COLOR_TO_RGB()

    #define             GO_COLOR_TO_RGB(u,r,g,b)

`u` : |
`r` : |
`g` : |
`b` : |

### GO_COLOR_TO_RGBA()

    #define             GO_COLOR_TO_RGBA(u,r,g,b,a)

`u` : |
`r` : |
`g` : |
`b` : |
`a` : |

### GO_COLOR_MONO_INTERPOLATE()

    #define GO_COLOR_MONO_INTERPOLATE(v1, v2, t) ((gint)go_rint((v2)*(t)+(v1)*(1-(t))))

`v1` : |
`v2` : |
`t` : |

### GO_COLOR_INTERPOLATE()

    #define             GO_COLOR_INTERPOLATE(c1, c2, t)

`c1` : |
`c2` : |
`t` : |

### GO_COLOR_DOUBLE_R()

    #define GO_COLOR_DOUBLE_R(x) (GO_COLOR_UINT_R(x)/255.0)

`x` : |

### GO_COLOR_DOUBLE_G()

    #define GO_COLOR_DOUBLE_G(x) (GO_COLOR_UINT_G(x)/255.0)

`x` : |

### GO_COLOR_DOUBLE_B()

    #define GO_COLOR_DOUBLE_B(x) (GO_COLOR_UINT_B(x)/255.0)

`x` : |

### GO_COLOR_DOUBLE_A()

    #define GO_COLOR_DOUBLE_A(x) (GO_COLOR_UINT_A(x)/255.0)

`x` : |

### GO_COLOR_TO_CAIRO()

    #define GO_COLOR_TO_CAIRO(x) GO_COLOR_DOUBLE_R(x),GO_COLOR_DOUBLE_G(x),GO_COLOR_DOUBLE_B(x),GO_COLOR_DOUBLE_A(x)

`x` : |

### go_color_from_str ()

    gboolean            go_color_from_str                   (char const *str,
                                                             GOColor *res);

Returns : | TRUE if `str` can be parsed as a color of the form R:G:B:A and the result is stored in `res`.

### go_color_as_str ()

    gchar *             go_color_as_str                     (GOColor color);

`color` : |
Returns : |

### go_color_to_pango ()

    PangoAttribute *    go_color_to_pango                   (GOColor color,
                                                             gboolean is_fore);

`color` : |
`is_fore` : |
Returns : |

### go_color_to_gdk ()

    GdkColor *          go_color_to_gdk                     (GOColor color,
                                                             GdkColor *res);

`color` : |
`res` : |
Returns : |