parse
Description:
Parses a textual representation of a color, filling in the red
, green
, blue
and alpha
fields of the this RGBA.
The string can be either one of: - A standard name (Taken from the X11 rgb.txt file). - A hexadecimal value in the form “#rgb”, “#rrggbb”, “#rrrgggbbb” or ”#rrrrggggbbbb” - A RGB color in the form “rgb(r,g,b)” (In this case the color will have full opacity) - A RGBA color in the form “rgba(r,g,b,a)”
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 percentage values in the range 0% to 100%, and a is a floating point value in the range 0 to 1.
Parameters:
this |
the RGBA to fill in |
spec |
the string specifying the color |
Returns:
true if the parsing succeeded |