gdk_rgba_copy ()

GdkRGBA *
gdk_rgba_copy (const GdkRGBA *rgba);

Makes a copy of a GdkRGBA.

The result must be freed through gdk_rgba_free().

Since 3.0

gdk_rgba_free ()

void
gdk_rgba_free (GdkRGBA *rgba);

Frees a GdkRGBA created with gdk_rgba_copy()

Since 3.0

gdk_rgba_parse ()

gboolean
gdk_rgba_parse (GdkRGBA *rgba,
                const gchar *spec);

Parses a textual representation of a color, filling in the red , green , blue and alpha fields of the rgba GdkRGBA.

The string can be either one of:

Where “r”, “g”, “b” and “a” are respectively the red, green, blue and alpha color values. In the last two cases, r g and b are either integers in the range 0 to 255 or precentage values in the range 0% to 100%, and a is a floating point value in the range 0 to 1.

Since 3.0

gdk_rgba_equal ()

gboolean
gdk_rgba_equal (gconstpointer p1,
                gconstpointer p2);

Compares two RGBA colors.

Since 3.0

gdk_rgba_hash ()

guint
gdk_rgba_hash (gconstpointer p);

A hash function suitable for using for a hash table that stores GdkRGBAs.

Since 3.0

gdk_rgba_to_string ()

gchar *
gdk_rgba_to_string (const GdkRGBA *rgba);

Returns a textual specification of rgba in the form rgb (r, g, b) or rgba (r, g, b, a), where “r”, “g”, “b” and “a” represent the red, green, blue and alpha values respectively. r, g, and b are represented as integers in the range 0 to 255, and a is represented as floating point value in the range 0 to 1.

These string forms are string forms those supported by the CSS3 colors module, and can be parsed by gdk_rgba_parse().

Note that this string representation may lose some precision, since r, g and b are represented as 8-bit integers. If this is a concern, you should use a different representation.

Since 3.0

GdkRGBA

typedef struct {
  gdouble red;
  gdouble green;
  gdouble blue;
  gdouble alpha;
} GdkRGBA;

A GdkRGBA is used to represent a (possibly translucent) color, in a way that is compatible with cairos notion of color.