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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 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.
;
; chalk.scm version 0.11 10/10/97
;
; Copyright (C) 1997 Manish Singh <msingh@uclink4.berkeley.edu>
;
; Makes a logo with a chalk-like text effect.
(define (apply-chalk-logo-effect img
logo-layer
bg-color)
(let* ((width (car (gimp-drawable-width logo-layer)))
(height (car (gimp-drawable-height logo-layer)))
(bg-layer (car (gimp-layer-new img
width height RGB-IMAGE
"Background" 100 NORMAL-MODE))))
(gimp-context-push)
(gimp-selection-none img)
(script-fu-util-image-resize-from-layer img logo-layer)
(gimp-image-add-layer img bg-layer 1)
(gimp-context-set-background bg-color)
(gimp-edit-fill bg-layer BACKGROUND-FILL)
; the actual effect
(gimp-layer-set-preserve-trans logo-layer FALSE)
(plug-in-gauss-rle 1 img logo-layer 2.0 1 1)
(plug-in-spread 1 img logo-layer 5.0 5.0)
(plug-in-ripple 1 img logo-layer 27 2 0 0 0 TRUE TRUE)
(plug-in-ripple 1 img logo-layer 27 2 1 0 0 TRUE TRUE)
(plug-in-sobel 1 img logo-layer TRUE TRUE TRUE)
(gimp-levels logo-layer 0 0 120 3.5 0 255)
; work-around for sobel edge detect screw-up (why does this happen?)
; the top line of the image has some garbage instead of the bgcolor
(gimp-rect-select img 0 0 width 1 CHANNEL-OP-ADD FALSE 0)
(gimp-edit-clear logo-layer)
(gimp-selection-none img)
(gimp-context-pop)))
(define (script-fu-chalk-logo-alpha img
logo-layer
bg-color)
(begin
(gimp-image-undo-group-start img)
(apply-chalk-logo-effect img logo-layer bg-color)
(gimp-image-undo-group-end img)
(gimp-displays-flush)))
(script-fu-register "script-fu-chalk-logo-alpha"
_"_Chalk..."
"Chalk scribbled logos"
"Manish Singh <msingh@uclink4.berkeley.edu>"
"Manish Singh"
"October 1997"
"RGBA"
SF-IMAGE "Image" 0
SF-DRAWABLE "Drawable" 0
SF-COLOR _"Background color" '(0 0 0))
(script-fu-menu-register "script-fu-chalk-logo-alpha"
_"<Image>/Script-Fu/Alpha to Logo")
(define (script-fu-chalk-logo text
size
font
bg-color
chalk-color)
(let* ((img (car (gimp-image-new 256 256 RGB)))
(border (/ size 4))
(text-layer (car (gimp-text-fontname img -1 0 0 text border TRUE size PIXELS font))))
(gimp-context-push)
(gimp-image-undo-disable img)
(gimp-drawable-set-name text-layer text)
(gimp-context-set-foreground chalk-color)
(gimp-layer-set-preserve-trans text-layer TRUE)
(gimp-edit-fill text-layer FOREGROUND-FILL)
(apply-chalk-logo-effect img text-layer bg-color)
(gimp-image-undo-enable img)
(gimp-display-new img)
(gimp-context-pop)))
(script-fu-register "script-fu-chalk-logo"
_"_Chalk..."
"Chalk scribbled logos"
"Manish Singh <msingh@uclink4.berkeley.edu>"
"Manish Singh"
"October 1997"
""
SF-STRING _"Text" "CHALK"
SF-ADJUSTMENT _"Font size (pixels)" '(150 2 1000 1 10 0 1)
SF-FONT _"Font" "Cooper"
SF-COLOR _"Background color" '(0 0 0)
SF-COLOR _"Chalk color" '(255 255 255))
(script-fu-menu-register "script-fu-chalk-logo"
_"<Toolbox>/Xtns/Script-Fu/Logos")
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