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; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; 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, write to the Free Software
; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
; http://www.gnu.org/licenses/gpl-3.0.html
;
; Copyright (C) 2008 elsamuko <elsamuko@web.de>
;
; Version 0.1 - First hack
; Version 0.2 - Seperated smoothness option to corn and smoothness
;


(define (elsamuko-obama-hope aimg adraw
                             smooth
                             corn 
                             frame ;thickness
                             yellow
                             threshold1 color1 pattern
                             threshold2 color2
                             threshold3 color3
                             threshold4 color4
                             )
  (let* ((img (car (gimp-drawable-get-image adraw)))
         (owidth (car (gimp-image-width img)))
         (oheight (car (gimp-image-height img)))
         (yellowlayer (car (gimp-layer-new img
                                           owidth 
                                           oheight
                                           1
                                           "Yellow" 
                                           100 
                                           NORMAL-MODE)))
         (framelayer (car (gimp-layer-new img
                                          owidth 
                                          oheight
                                          1
                                          "Frame" 
                                          100 
                                          NORMAL-MODE)))
         ;treshholds
         (layer1 0)
         (layer2 0)
         (layer3 0)
         (layer4 0)
         ;selections
         (layer1b (car (gimp-layer-new img
                                       owidth 
                                       oheight
                                       1
                                       "1 Fill" 
                                       100 
                                       NORMAL-MODE)))
         (layer2b (car (gimp-layer-new img
                                       owidth 
                                       oheight
                                       1
                                       "2 Fill" 
                                       100 
                                       NORMAL-MODE)))
         (layer3b (car (gimp-layer-new img
                                       owidth 
                                       oheight
                                       1
                                       "3 Fill" 
                                       100 
                                       NORMAL-MODE)))
         (layer4b (car (gimp-layer-new img
                                       owidth 
                                       oheight
                                       1
                                       "4 Fill" 
                                       100 
                                       NORMAL-MODE)))
         )
    
    ;init
    (gimp-context-push)
    (gimp-image-undo-group-start img)
    (if (= (car (gimp-drawable-has-alpha adraw )) FALSE)
        (gimp-layer-add-alpha adraw)
        )
    (if (= (car (gimp-drawable-is-gray adraw )) TRUE)
        (gimp-image-convert-rgb img)
        )
    (gimp-context-set-foreground yellow)
    (gimp-context-set-background '(255 255 255))
    
    ;copy and add blurred original
    (if (> smooth 0)
        (plug-in-gauss 1 img adraw smooth smooth 0)
        )
    (set! layer1 (car(gimp-layer-copy adraw FALSE)))
    (set! layer2 (car(gimp-layer-copy adraw FALSE)))
    (set! layer3 (car(gimp-layer-copy adraw FALSE)))
    (set! layer4 (car(gimp-layer-copy adraw FALSE)))
    (gimp-image-add-layer img layer1 -1)
    (gimp-image-add-layer img layer2 -1)
    (gimp-image-add-layer img layer3 -1)
    (gimp-image-add-layer img layer4 -1)
    (gimp-drawable-set-name layer1 "1")
    (gimp-drawable-set-name layer2 "2")
    (gimp-drawable-set-name layer3 "3")
    (gimp-drawable-set-name layer4 "4")
    
    ;add yellow color layer
    (gimp-context-set-foreground yellow)
    (gimp-image-add-layer img yellowlayer -1)
    (gimp-drawable-fill yellowlayer TRANSPARENT-FILL)
    (gimp-selection-all img)
    (gimp-edit-bucket-fill yellowlayer FG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
    (gimp-selection-none img)
    
    ;add image layers
    (gimp-image-add-layer img layer1b -1)
    (gimp-drawable-fill layer1b TRANSPARENT-FILL)
    (gimp-image-add-layer img layer2b -1)
    (gimp-drawable-fill layer2b TRANSPARENT-FILL)
    (gimp-image-add-layer img layer3b -1)
    (gimp-drawable-fill layer3b TRANSPARENT-FILL)
    (gimp-image-add-layer img layer4b -1)
    (gimp-drawable-fill layer4b TRANSPARENT-FILL)
    
    ;stripes layer
    (gimp-threshold layer1 threshold1 255)
    (gimp-by-color-select layer1 '(0 0 0) 0 CHANNEL-OP-REPLACE TRUE FALSE 0 FALSE)
    (if (> corn 0)
        (gimp-selection-grow img corn)
        (gimp-selection-shrink img corn)
        )
    (gimp-context-set-pattern pattern)
    (gimp-edit-bucket-fill layer1b PATTERN-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
    (gimp-by-color-select layer1b '(0 0 0) 0 CHANNEL-OP-REPLACE TRUE FALSE 0 FALSE)
    (gimp-context-set-foreground color1)
    (gimp-edit-bucket-fill layer1b FG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
    (gimp-selection-none img)
    
    ;2nd layer
    (gimp-threshold layer2 threshold2 255)
    (gimp-by-color-select layer2 '(0 0 0) 0 CHANNEL-OP-REPLACE TRUE FALSE 0 FALSE)
    (if (> corn 0)
        (gimp-selection-grow img corn)
        (gimp-selection-shrink img corn)
        )
    (gimp-context-set-foreground color2)
    (gimp-edit-bucket-fill layer2b FG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
    (gimp-selection-none img)
    
    ;3rd layer
    (gimp-threshold layer3 threshold3 255)
    (gimp-by-color-select layer3 '(0 0 0) 0 CHANNEL-OP-REPLACE TRUE FALSE 0 FALSE)
    (if (> corn 0)
        (gimp-selection-grow img corn)
        (gimp-selection-shrink img corn)
        )
    (gimp-context-set-foreground color3)
    (gimp-edit-bucket-fill layer3b FG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
    (gimp-selection-none img)
    
    ;4th layer
    (gimp-threshold layer4 threshold4 255)
    (gimp-by-color-select layer4 '(0 0 0) 0 CHANNEL-OP-REPLACE TRUE FALSE 0 FALSE)
    (if (> corn 0)
        (gimp-selection-grow img corn)
        (gimp-selection-shrink img corn)
        )
    (gimp-context-set-foreground color4)
    (gimp-edit-bucket-fill layer4b FG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
    (gimp-selection-none img)
    
    ;add frame layer
    (gimp-context-set-foreground yellow)
    (gimp-image-add-layer img framelayer -1)
    (gimp-drawable-fill framelayer TRANSPARENT-FILL)
    (gimp-selection-all img)
    (gimp-selection-shrink img frame)
    (gimp-selection-invert img)
    (gimp-edit-bucket-fill framelayer FG-BUCKET-FILL NORMAL-MODE 100 0 FALSE 0 0)
    (gimp-selection-none img)
    
    ; tidy up
    (gimp-selection-none img)
    (gimp-image-undo-group-end img)
    (gimp-displays-flush)
    (gimp-context-pop)
    )
  )

(script-fu-register "elsamuko-obama-hope"
                    _"_Obama Hope"
                    "Shadow Style Portrait.
Newest version can be downloaded from http://registry.gimp.org"
                    "elsamuko <elsamuko@web.de>"
                    "elsamuko"
                    "20.02.2009"
                    "*"
                    SF-IMAGE       "Input image"          0
                    SF-DRAWABLE    "Input drawable"       0
                    SF-ADJUSTMENT _"Smoothness"      '(10 0 50 1 10 0 0)
                    SF-ADJUSTMENT _"Corn Size"       '(2  0 50 1 10 0 0)
                    SF-ADJUSTMENT _"Frame Thickness" '(16 1 500 1 10 0 0)
                    SF-COLOR      _"Basic Color"  '(253 229 169) ;yellow
                    SF-ADJUSTMENT _"Threshold 1" '(220 0 255 1 10 0 0)
                    SF-COLOR      _"Color 1"      '(113 150 159) ;blue
                    SF-STRING      "Pattern"      "Stripes" 
                    SF-ADJUSTMENT _"Threshold 2" '(200 0 255 1 10 0 0)
                    SF-COLOR      _"Color 2"      '(113 150 159) ;blue
                    SF-ADJUSTMENT _"Threshold 3" '(150 0 255 1 10 0 0)
                    SF-COLOR      _"Color 3"      '(215  26  33) ;red
                    SF-ADJUSTMENT _"Threshold 4" '(100 0 255 1 10 0 0)
                    SF-COLOR      _"Color 4"      '(  0  50  77) ;dark 
                    )

(script-fu-menu-register "elsamuko-obama-hope" _"<Image>/Filters/Artistic")