; FU_edges_fuzzy-border.scm
; version 2.7 [gimphelp.org]
; last modified/tested by Paul Sherman
; 05/05/2012 on GIMP-2.8

; Do a cool fade to a given colour at the border of an image 
; (optional shadow.) Will make image RGB if it isn't already.
; ------------------------------------------------------------------
; Original information ---------------------------------------------
;
; 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
;
; Chris Gutteridge (cjg@ecs.soton.ac.uk)
; At ECS Dept, University of Southampton, England.
;
; 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.
;
; End original information ------------------------------------------
;--------------------------------------------------------------------

(define (FU-fuzzy-border 	inImage
                                		inLayer
                                		inColor
                                		inSize
                                		inBlur
                                		inGranu
                                		inShadow
                                		inShadWeight
                                		inCopy
                                		inFlatten
        )

  (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
                                        NORMAL-MODE)))

    (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-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 "FU-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"
	"RGB* GRAY*"
	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 "FU-fuzzy-border" "<Image>/Script-Fu/Edges/")
