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+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; xach effect script
+; Copyright (c) 1997 Adrian Likins
+; aklikins@eos.ncsu.edu
+;
+; based on a idea by Xach Beane <xach@mint.net>
+;
+;
+; 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-xach-effect image
+ drawable
+ hl-offset-x
+ hl-offset-y
+ hl-color
+ hl-opacity-comp
+ ds-color
+ ds-opacity
+ ds-blur
+ ds-offset-x
+ ds-offset-y
+ keep-selection)
+ (let* (
+ (ds-blur (max ds-blur 0))
+ (ds-opacity (min ds-opacity 100))
+ (ds-opacity (max ds-opacity 0))
+ (type (car (gimp-drawable-type-with-alpha drawable)))
+ (image-width (car (gimp-image-width image)))
+ (hl-opacity (list hl-opacity-comp hl-opacity-comp hl-opacity-comp))
+ (image-height (car (gimp-image-height image)))
+ (active-selection 0)
+ (from-selection 0)
+ (theLayer 0)
+ (hl-layer 0)
+ (shadow-layer 0)
+ (mask 0)
+ )
+
+ (gimp-context-push)
+ (gimp-context-set-defaults)
+
+ (gimp-image-undo-group-start image)
+ (gimp-layer-add-alpha drawable)
+
+ (if (= (car (gimp-selection-is-empty image)) TRUE)
+ (begin
+ (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+ (set! active-selection (car (gimp-selection-save image)))
+ (set! from-selection FALSE))
+ (begin
+ (set! from-selection TRUE)
+ (set! active-selection (car (gimp-selection-save image)))))
+
+ (set! hl-layer (car (gimp-layer-new image image-width image-height type _"Highlight" 100 LAYER-MODE-NORMAL)))
+ (gimp-image-insert-layer image hl-layer 0 -1)
+
+ (gimp-selection-none image)
+ (gimp-drawable-edit-clear hl-layer)
+ (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+
+ (gimp-context-set-background hl-color)
+ (gimp-drawable-edit-fill hl-layer FILL-BACKGROUND)
+ (gimp-selection-translate image hl-offset-x hl-offset-y)
+ (gimp-drawable-edit-fill hl-layer FILL-BACKGROUND)
+ (gimp-selection-none image)
+ (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+
+ (set! mask (car (gimp-layer-create-mask hl-layer ADD-MASK-WHITE)))
+ (gimp-layer-add-mask hl-layer mask)
+
+ (gimp-context-set-background hl-opacity)
+ (gimp-drawable-edit-fill mask FILL-BACKGROUND)
+
+ (set! shadow-layer (car (gimp-layer-new image
+ image-width
+ image-height
+ type
+ _"Shadow"
+ ds-opacity
+ LAYER-MODE-NORMAL)))
+ (gimp-image-insert-layer image shadow-layer 0 -1)
+ (gimp-selection-none image)
+ (gimp-drawable-edit-clear shadow-layer)
+ (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+ (gimp-selection-translate image ds-offset-x ds-offset-y)
+ (gimp-context-set-background ds-color)
+ (gimp-drawable-edit-fill shadow-layer FILL-BACKGROUND)
+ (gimp-selection-none image)
+ (plug-in-gauss-rle RUN-NONINTERACTIVE image shadow-layer ds-blur TRUE TRUE)
+ (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+ (gimp-drawable-edit-clear shadow-layer)
+ (gimp-image-lower-item image shadow-layer)
+
+ (if (= keep-selection FALSE)
+ (gimp-selection-none image))
+
+ (gimp-image-set-active-layer image drawable)
+ (gimp-image-remove-channel image active-selection)
+ (gimp-image-undo-group-end image)
+ (gimp-displays-flush)
+
+ (gimp-context-pop)
+ )
+)
+
+(script-fu-register "script-fu-xach-effect"
+ _"_Xach-Effect..."
+ _"Add a subtle translucent 3D effect to the selected region (or alpha)"
+ "Adrian Likins <adrian@gimp.org>"
+ "Adrian Likins"
+ "9/28/97"
+ "RGB* GRAY*"
+ SF-IMAGE "Image" 0
+ SF-DRAWABLE "Drawable" 0
+ SF-ADJUSTMENT _"Highlight X offset" '(-1 -100 100 1 10 0 1)
+ SF-ADJUSTMENT _"Highlight Y offset" '(-1 -100 100 1 10 0 1)
+ SF-COLOR _"Highlight color" "white"
+ SF-ADJUSTMENT _"Highlight opacity" '(66 0 255 1 10 0 0)
+ SF-COLOR _"Drop shadow color" "black"
+ SF-ADJUSTMENT _"Drop shadow opacity" '(100 0 100 1 10 0 0)
+ SF-ADJUSTMENT _"Drop shadow blur radius" '(12 0 255 1 10 0 1)
+ SF-ADJUSTMENT _"Drop shadow X offset" '(5 0 255 1 10 0 1)
+ SF-ADJUSTMENT _"Drop shadow Y offset" '(5 0 255 1 10 0 1)
+ SF-TOGGLE _"Keep selection" TRUE
+)
+
+(script-fu-menu-register "script-fu-xach-effect"
+ "<Image>/Filters/Light and Shadow/Shadow")