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- ; The GIMP -- an 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 2 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, write to the Free Software
- ; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- (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 NORMAL-MODE)))
-
- ; Calculate colors for checkerboard... just like in the gradient editor
-
- (fg-color (* 255 (/ 2 3)))
- (bg-color (* 255 (/ 1 3))))
-
- (gimp-context-push)
-
- (gimp-image-undo-disable img)
- (gimp-image-add-layer img drawable 0)
-
- ; Render background checkerboard
-
- (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 1 img drawable 0 8)
-
- ; Render gradient
-
- (gimp-edit-blend drawable CUSTOM-MODE NORMAL-MODE
- GRADIENT-LINEAR 100 0 REPEAT-NONE gradient-reverse
- FALSE 0 0 TRUE
- 0 0 (- width 1) 0)
-
- ; Terminate
- (gimp-image-undo-enable img)
- (gimp-display-new img)
-
- (gimp-context-pop)))
-
- (script-fu-register "script-fu-gradient-example"
- _"Custom _Gradient..."
- "Create an example image of a custom 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"
- _"<Toolbox>/Xtns/Script-Fu/Utils")
-