; 210_edges_fuzzy-border.scm
; last modified/tested by Paul Sherman [gimphelp.org]
; Wednesday, 07/01/2020 on GIMP 2.10.20
;==================================================
;
; Installation:
; This script should be placed in the user or system-wide script folder.
;
;	Windows 7/10
;	C:\Program Files\GIMP 2\share\gimp\2.0\scripts
;	or
;	C:\Users\YOUR-NAME\AppData\Roaming\GIMP\2.10\scripts
;	
;    
;	Linux
;	/home/yourname/.config/GIMP/2.10/scripts  
;	or
;	Linux system-wide
;	/usr/share/gimp/2.0/scripts
;
;==================================================
;
; LICENSE
;
;    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 <http://www.gnu.org/licenses/>.
;
;==============================================================
; Original information 
; 
; Chris Gutteridge (cjg@ecs.soton.ac.uk)
; At ECS Dept, University of Southampton, England
;
; tweaked for GIMP-2.4.x by Paul Sherman 10/24/2007
; later moved menu location
; edited again for GIMP 2.6 - 11/20/2008
;==============================================================
(define (210-fuzzy-border 
		inImage
		inLayer
		inColor
		inSize
		inBlur
		inGranu
		inShadow
		inShadWeight
		inCopy
		inFlatten
        )
	(gimp-image-undo-group-start inImage)
	(if (not (= RGB (car (gimp-image-base-type inImage))))
			 (gimp-image-convert-rgb inImage))
  (let (
       (theWidth (car (gimp-image-width inImage)))
       (theHeight (car (gimp-image-height inImage)))
       (theImage 0)
       (theLayer 0)
       )
    (gimp-selection-all inImage)
    (set! theImage (if (= inCopy TRUE)
                     (car (gimp-image-duplicate inImage))
                     inImage
                   )
    )
    (if (> (car (gimp-drawable-type inLayer)) 1)
        (gimp-image-convert-rgb theImage)
    )
    (set! theLayer (car (gimp-layer-new theImage
                                        theWidth
                                        theHeight
                                        RGBA-IMAGE
                                        "layer 1"
                                        100
                                        LAYER-MODE-NORMAL-LEGACY)))
    (gimp-image-insert-layer theImage theLayer 0 0)
    (gimp-edit-clear theLayer)
    (chris-color-edge theImage theLayer inColor inSize)
    (gimp-layer-scale theLayer
                      (/ theWidth inGranu)
                      (/ theHeight inGranu)
                      TRUE)
    (plug-in-spread TRUE
                    theImage
                    theLayer
                    (/ inSize inGranu)
                    (/ inSize inGranu))
    (chris-color-edge theImage theLayer inColor 1)
    (gimp-layer-scale theLayer theWidth theHeight TRUE)
    (gimp-image-select-item theImage CHANNEL-OP-REPLACE theLayer)
    (gimp-selection-invert theImage)
    (gimp-edit-clear theLayer)
    (gimp-selection-invert theImage)
    (gimp-edit-clear theLayer)
    (gimp-context-set-background inColor)
    (gimp-edit-fill theLayer BACKGROUND-FILL)
    (gimp-selection-none inImage)
    (chris-color-edge theImage theLayer inColor 1)
    (if (= inBlur TRUE)
        (plug-in-gauss-rle TRUE theImage theLayer inSize TRUE TRUE)
    )
    (if (= inShadow TRUE)
        (begin
          (gimp-selection-none inImage)
          (gimp-image-insert-layer theImage
                                (car (gimp-layer-copy theLayer FALSE)) 0 0)
          (gimp-layer-scale theLayer
                            (- theWidth inSize) (- theHeight inSize) TRUE)
          (gimp-desaturate theLayer)
          (gimp-brightness-contrast theLayer 127 127)
          (gimp-invert theLayer)
          (gimp-layer-resize theLayer
                             theWidth
                             theHeight
                             (/ inSize 2)
                             (/ inSize 2))
          (plug-in-gauss-rle TRUE
                             theImage
                             theLayer
                             (/ inSize 2)
                             TRUE
                             TRUE)
          (gimp-layer-set-opacity theLayer inShadWeight)
        )
    )
    (if (= inFlatten TRUE)
        (gimp-image-flatten theImage)
    )
    (if (= inCopy TRUE)
      (begin
        (gimp-image-clean-all theImage)
        (gimp-display-new theImage)
      )
    )
    (gimp-image-undo-group-end inImage)
    (gimp-displays-flush)
  )
)
(define (chris-color-edge inImage inLayer inColor inSize)
	(gimp-selection-all inImage)
	(gimp-selection-shrink inImage inSize)
	(gimp-selection-invert inImage)
	(gimp-context-set-background inColor)
	(gimp-edit-fill inLayer BACKGROUND-FILL)
	(gimp-selection-none inImage)
)
(script-fu-register "210-fuzzy-border"
	"Fuzzy Border"
	"Add a jagged, fuzzy border to an image"
	"Chris Gutteridge"
	"1998, Chris Gutteridge / ECS dept, University of Southampton, England."
	"3rd April 1998"
	"*"
	SF-IMAGE      	"The image"               0
	SF-DRAWABLE   	"The layer"               0
	SF-COLOR      	"Color"                  "white"
	SF-ADJUSTMENT 	"Border size"            '(16 1 300 1 10 0 1)
	SF-TOGGLE     	"Blur border"            TRUE
	SF-ADJUSTMENT 	"Granularity (1 is Low)" '(4 1 16 0.25 5 2 0)
	SF-TOGGLE     	"Add shadow"             FALSE
	SF-ADJUSTMENT 	"Shadow weight (%)"      '(100 0 100 1 10 0 0)
	SF-TOGGLE     	"Work on copy"           TRUE
	SF-TOGGLE     	"Flatten image"          TRUE
)
(script-fu-menu-register "210-fuzzy-border" "<Image>/Script-Fu/Edges")