►The Racket Graphical Interface Toolkit
▼6 Snip and Style Classes
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get
get-a
get-b
get-g
get-r
set
set-a
set-b
set-g
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interface

add-color<%> : interface?

An add-color<%> object is used to additively change the RGB values of a color% object. An add-color<%> object only exists within a style-delta% object.

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

method

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

  r : (box/c (integer-in -1000 1000))
  g : (box/c (integer-in -1000 1000))
  b : (box/c (integer-in -1000 1000))
  a : (or/c (box/c real?) #f) = #f
Gets all of the additive values.

The r box is filled with the additive value for the red component of the color. The g box is filled with the additive value for the green component of the color. The b box is filled with the additive value for the blue component of the color. The a box is filled with the additive 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 an-add-color get-a) → real?

Gets the additive value for the alpha component of the color.

Added in version 1.63 of package snip-lib.

method

(send an-add-color get-b) → (integer-in -1000 1000)

Gets the additive value for the blue component of the color.

method

(send an-add-color get-g) → (integer-in -1000 1000)

Gets the additive value for the green component of the color.

method

(send an-add-color get-r) → (integer-in -1000 1000)

Gets the additive value for the red component of the color.

method

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

  r : (integer-in -1000 1000)
  g : (integer-in -1000 1000)
  b : (integer-in -1000 1000)
  a : real? = 0.0
Sets all of the additive values.

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

method

(send an-add-color set-a v) → void?

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

Added in version 1.63 of package snip-lib.

method

(send an-add-color set-b v) → void?

  v : (integer-in -1000 1000)
Sets the additive value for the blue component of the color.

method

(send an-add-color set-g v) → void?

  v : (integer-in -1000 1000)
Sets the additive value for the green component of the color.

method

(send an-add-color set-r v) → void?

  v : (integer-in -1000 1000)
Sets the additive value for the red component of the color.

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