►The Racket Graphical Interface Toolkit
▼6 Snip and Style Classes
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interface

mult-color<%> : interface?

A mult-color<%> object is used to scale the RGB values of a color% object. A mult-color<%> object exist only within a style-delta% object.

See also get-foreground-mult and get-background-mult.

method

(send a-mult-color get r g b [a]) → void?

  r : (box/c real?)
  g : (box/c real?)
  b : (box/c real?)
  a : (or/c (box/c real?) #f) = #f
Gets all of the scaling values.

The r box is filled with the scaling value for the red component of the color. The g box is filled with the scaling value for the green component of the color. The b box is filled with the scaling value for the blue component of the color. The a box is filled with the scaling value for the alpha component of the color, unless a is #f.

Changed in version 1.63 of package snip-lib: Added the a optional argument.

method

(send a-mult-color get-a) → real?

Gets the multiplicative scaling value for the alpha component of the color.

Added in version 1.63 of package snip-lib.

method

(send a-mult-color get-b) → real?

Gets the multiplicative scaling value for the blue component of the color.

method

(send a-mult-color get-g) → real?

Gets the multiplicative scaling value for the green component of the color.

method

(send a-mult-color get-r) → real?

Gets the multiplicative scaling value for the red component of the color.

method

(send a-mult-color set r g b [a]) → void?

  r : real?
  g : real?
  b : real?
  a : real? = 1.0
Sets all of the scaling values.

Changed in version 1.63 of package snip-lib: Added the a optional argument.

method

(send a-mult-color set-a v) → void?

  v : real?
Sets the multiplicative scaling value for the alpha component of the color.

Added in version 1.63 of package snip-lib.

method

(send a-mult-color set-b v) → void?

  v : real?
Sets the multiplicative scaling value for the blue component of the color.

method

(send a-mult-color set-g v) → void?

  v : real?
Sets the multiplicative scaling value for the green component of the color.

method

(send a-mult-color set-r v) → void?

  v : real?
Sets the additive value for the red component of the color.

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