mirror of https://github.com/GNOME/gimp.git
158 lines
4.8 KiB
Scheme
158 lines
4.8 KiB
Scheme
; The GIMP -- an image manipulation program
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; Copyright (C) 1995 Spencer Kimball and Peter Mattis
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;
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; Alien Glow themed button
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; Copyright (c) 1997 Adrian Likins
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; aklikins@eos.ncsu.edu
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;
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; based on code from Frederico Mena Quintero (Quartic)
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; federico@nuclecu.unam.mx
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;
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; This program is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 2 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program; if not, write to the Free Software
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; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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(define (text-width extents)
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(car extents))
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(define (text-height extents)
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(cadr extents))
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(define (text-ascent extents)
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(caddr extents))
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(define (text-descent extents)
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(cadr (cddr extents)))
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(define (blend-bumpmap img
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drawable
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x1
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y1
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x2
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y2)
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(gimp-edit-blend drawable FG-BG-RGB-MODE DARKEN-ONLY-MODE
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GRADIENT-LINEAR 100 0 REPEAT-NONE FALSE
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FALSE 0 0 TRUE
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x1 y1 x2 y2))
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(define (script-fu-alien-glow-button text
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font
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size
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text-color
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glow-color
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bg-color
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padding
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glow-radius
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flatten)
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(let* ((text-extents (gimp-text-get-extents-fontname text
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size
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PIXELS
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font))
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(ascent (text-ascent text-extents))
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(descent (text-descent text-extents))
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(img-width (+ (* 2 padding)
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(text-width text-extents)))
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(img-height (+ (* 2 padding)
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(+ ascent descent)))
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(layer-height img-height)
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(layer-width img-width)
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(img-width (+ img-width glow-radius))
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(img-height (+ img-height glow-radius))
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(img (car (gimp-image-new img-width img-height RGB)))
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(bg-layer (car (gimp-layer-new img
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img-width img-height RGBA-IMAGE
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"Background" 100 NORMAL-MODE)))
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(glow-layer (car (gimp-layer-new img
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img-width img-height RGBA-IMAGE
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"Glow" 100 NORMAL-MODE)))
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(button-layer (car (gimp-layer-new img
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layer-width layer-height RGBA-IMAGE
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"Button" 100 NORMAL-MODE))))
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(gimp-context-push)
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(gimp-image-undo-disable img)
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; Create bumpmap layer
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(gimp-image-add-layer img bg-layer -1)
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(gimp-context-set-foreground '(0 0 0))
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(gimp-context-set-background bg-color)
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(gimp-edit-fill bg-layer BACKGROUND-FILL)
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(gimp-image-add-layer img glow-layer -1)
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; Create text layer
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(gimp-image-add-layer img button-layer -1)
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(gimp-layer-set-offsets button-layer (/ glow-radius 2) (/ glow-radius 2))
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(gimp-selection-none img)
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(gimp-rect-select img 0 0 img-width img-height CHANNEL-OP-REPLACE FALSE 0)
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(gimp-context-set-foreground '(100 100 100))
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(gimp-context-set-background '(0 0 0))
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(gimp-edit-blend button-layer FG-BG-RGB-MODE NORMAL-MODE
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GRADIENT-SHAPEBURST-ANGULAR 100 0 REPEAT-NONE FALSE
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FALSE 0 0 TRUE
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0 0 img-height img-width)
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(gimp-edit-clear glow-layer)
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(gimp-rect-select img
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(/ glow-radius 4)
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(/ glow-radius 4)
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(- img-width (/ glow-radius 2))
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(- img-height (/ glow-radius 2))
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CHANNEL-OP-REPLACE FALSE 0 )
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(gimp-context-set-foreground glow-color)
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(gimp-edit-fill glow-layer FOREGROUND-FILL)
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(gimp-selection-none img)
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(plug-in-gauss-rle 1 img glow-layer glow-radius TRUE TRUE)
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(gimp-context-set-foreground text-color)
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(let ((textl (car (gimp-text-fontname
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img -1 0 0 text 0 TRUE size PIXELS font))))
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(gimp-layer-set-offsets textl
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(+ padding (/ glow-radius 2))
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(+ (+ padding descent) (/ glow-radius 2))))
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; Done
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(gimp-selection-none img)
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(gimp-image-undo-enable img)
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(if (= flatten TRUE)
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(gimp-image-flatten img))
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(gimp-display-new img)
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(gimp-context-pop)))
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(script-fu-register "script-fu-alien-glow-button"
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_"B_utton..."
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"Button with an eerie glow"
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"Adrian Likins"
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"Adrian Likins"
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"July 1997"
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""
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SF-STRING _"Text" "Hello world!"
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SF-FONT _"Font" "Sans Bold"
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SF-ADJUSTMENT _"Font size (pixels)" '(22 2 100 1 1 0 1)
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SF-COLOR _"Text color" '(0 0 0)
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SF-COLOR _"Glow color" '(63 252 0)
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SF-COLOR _"Background color" '(0 0 0)
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SF-ADJUSTMENT _"Padding" '(6 1 100 1 10 0 1)
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SF-ADJUSTMENT _"Glow radius" '(10 1 200 1 10 0 1)
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SF-TOGGLE _"Flatten image" TRUE)
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(script-fu-menu-register "script-fu-alien-glow-button"
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"<Toolbox>/Xtns/Script-Fu/Web Page Themes/Alien Glow")
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