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+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Gradient example script --- create an example image of a custom gradient
+; Copyright (C) 1997 Federico Mena Quintero
+; federico@nuclecu.unam.mx
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+(define (script-fu-gradient-example width
+ height
+ gradient-reverse)
+ (let* (
+ (img (car (gimp-image-new width height RGB)))
+ (drawable (car (gimp-layer-new img width height RGB
+ "Gradient example" 100 LAYER-MODE-NORMAL)))
+
+ ; Calculate colors for checkerboard... just like in the gradient editor
+
+ (fg-color (* 255 (/ 2 3)))
+ (bg-color (* 255 (/ 1 3)))
+ )
+
+ (gimp-image-undo-disable img)
+ (gimp-image-insert-layer img drawable 0 0)
+
+ ; Render background checkerboard
+
+ (gimp-context-push)
+
+ (gimp-context-set-foreground (list fg-color fg-color fg-color))
+ (gimp-context-set-background (list bg-color bg-color bg-color))
+ (plug-in-checkerboard RUN-NONINTERACTIVE img drawable 0 8)
+
+ (gimp-context-pop)
+
+ ; Render gradient
+
+ (gimp-context-push)
+
+ (gimp-context-set-gradient-reverse gradient-reverse)
+ (gimp-drawable-edit-gradient-fill drawable
+ GRADIENT-LINEAR 0
+ FALSE 0 0
+ TRUE
+ 0 0 (- width 1) 0)
+
+ (gimp-context-pop)
+
+ ; Terminate
+
+ (gimp-image-undo-enable img)
+ (gimp-display-new img)
+ )
+)
+
+(script-fu-register "script-fu-gradient-example"
+ _"Custom _Gradient..."
+ _"Create an image filled with an example of the current gradient"
+ "Federico Mena Quintero"
+ "Federico Mena Quintero"
+ "June 1997"
+ ""
+ SF-ADJUSTMENT _"Width" '(400 1 2000 1 10 0 1)
+ SF-ADJUSTMENT _"Height" '(30 1 2000 1 10 0 1)
+ SF-TOGGLE _"Gradient reverse" FALSE
+)
+
+(script-fu-menu-register "script-fu-gradient-example"
+ "<Gradients>")