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alien-glow-button.scm
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2009-12-15
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; GIMP - The GNU Image Manipulation Program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Alien Glow themed button
; Copyright (c) 1997 Adrian Likins
; aklikins@eos.ncsu.edu
;
; based on code from Frederico Mena Quintero (Quartic)
; federico@nuclecu.unam.mx
;
; 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.
(define (script-fu-alien-glow-button text
font
size
text-color
glow-color
bg-color
padding
glow-radius
flatten)
(define (text-width extents)
(car extents))
(define (text-height extents)
(cadr extents))
(define (text-ascent extents)
(caddr extents))
(define (text-descent extents)
(cadr (cddr extents)))
(define (blend-bumpmap img
drawable
x1
y1
x2
y2)
(gimp-edit-blend drawable FG-BG-RGB-MODE DARKEN-ONLY-MODE
GRADIENT-LINEAR 100 0 REPEAT-NONE FALSE
FALSE 0 0 TRUE
x1 y1 x2 y2)
)
(let* (
(text-extents (gimp-text-get-extents-fontname text
size
PIXELS
font))
(ascent (text-ascent text-extents))
(descent (text-descent text-extents))
(img-width (+ (* 2 padding)
(text-width text-extents)))
(img-height (+ (* 2 padding)
(+ ascent descent)))
(layer-height img-height)
(layer-width img-width)
(img-width (+ img-width glow-radius))
(img-height (+ img-height glow-radius))
(img (car (gimp-image-new img-width img-height RGB)))
(bg-layer (car (gimp-layer-new img
img-width img-height RGBA-IMAGE
"Background" 100 NORMAL-MODE)))
(glow-layer (car (gimp-layer-new img
img-width img-height RGBA-IMAGE
"Glow" 100 NORMAL-MODE)))
(button-layer (car (gimp-layer-new img
layer-width layer-height RGBA-IMAGE
"Button" 100 NORMAL-MODE)))
)
(gimp-context-push)
(gimp-image-undo-disable img)
; Create bumpmap layer
(gimp-image-add-layer img bg-layer -1)
(gimp-context-set-foreground '(0 0 0))
(gimp-context-set-background bg-color)
(gimp-edit-fill bg-layer BACKGROUND-FILL)
(gimp-image-add-layer img glow-layer -1)
; Create text layer
(gimp-image-add-layer img button-layer -1)
(gimp-layer-set-offsets button-layer (/ glow-radius 2) (/ glow-radius 2))
(gimp-selection-none img)
(gimp-rect-select img 0 0 img-width img-height CHANNEL-OP-REPLACE FALSE 0)
(gimp-context-set-foreground '(100 100 100))
(gimp-context-set-background '(0 0 0))
(gimp-edit-blend button-layer FG-BG-RGB-MODE NORMAL-MODE
GRADIENT-SHAPEBURST-ANGULAR 100 0 REPEAT-NONE FALSE
FALSE 0 0 TRUE
0 0 img-height img-width)
(gimp-edit-clear glow-layer)
(gimp-rect-select img
(/ glow-radius 4)
(/ glow-radius 4)
(- img-width (/ glow-radius 2))
(- img-height (/ glow-radius 2))
CHANNEL-OP-REPLACE FALSE 0 )
(gimp-context-set-foreground glow-color)
(gimp-edit-fill glow-layer FOREGROUND-FILL)
(gimp-selection-none img)
(plug-in-gauss-rle RUN-NONINTERACTIVE img glow-layer glow-radius TRUE TRUE)
(gimp-context-set-foreground text-color)
(let (
(textl (car (gimp-text-fontname
img -1 0 0 text 0 TRUE size PIXELS font)))
)
(gimp-layer-set-offsets textl
(+ padding (/ glow-radius 2))
(+ (+ padding descent) (/ glow-radius 2)))
)
; Done
(gimp-selection-none img)
(gimp-image-undo-enable img)
(if (= flatten TRUE)
(gimp-image-flatten img)
)
(gimp-display-new img)
(gimp-context-pop)
)
)
(script-fu-register "script-fu-alien-glow-button"
_"B_utton..."
_"Create a button graphic with an eerie glow for web pages"
"Adrian Likins"
"Adrian Likins"
"July 1997"
""
SF-STRING _"Text" "Hello world!"
SF-FONT _"Font" "Sans Bold"
SF-ADJUSTMENT _"Font size (pixels)" '(22 2 100 1 1 0 1)
SF-COLOR _"Text color" "black"
SF-COLOR _"Glow color" '(63 252 0)
SF-COLOR _"Background color" "black"
SF-ADJUSTMENT _"Padding" '(6 1 100 1 10 0 1)
SF-ADJUSTMENT _"Glow radius" '(10 1 200 1 10 0 1)
SF-TOGGLE _"Flatten image" TRUE
)
(script-fu-menu-register "script-fu-alien-glow-button"
"<Image>/File/Create/Web Page Themes/Alien Glow")