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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.
;
;
; round-corners.scm version 1.02 1999/12/21
;
; CHANGE-LOG:
; 1.00 - initial release
; 1.01 - some code cleanup, no real changes
;
; Copyright (C) 1997-1999 Sven Neumann <sven@gimp.org>
;
;
; Rounds the corners of an image, optionally adding a drop-shadow and
; a background layer
;
; The script works on RGB and grayscale images that contain only
; one layer. It creates a copy of the image or can optionally work
; on the original. The script uses the current background color to
; create a background layer. It makes a call to the script drop-shadow.
;
; This script is derived from my script add-shadow, which has become
; obsolet now.
(define (script-fu-round-corners img
drawable
radius
shadow-toggle
shadow-x
shadow-y
shadow-blur
background-toggle
work-on-copy)
(let* ((shadow-blur (abs shadow-blur))
(radius (abs radius))
(diam (* 2 radius))
(width (car (gimp-image-width img)))
(height (car (gimp-image-height img)))
(type (car (gimp-drawable-type-with-alpha drawable)))
(image (cond ((= work-on-copy TRUE)
(car (gimp-image-duplicate img)))
((= work-on-copy FALSE)
img)))
(pic-layer (car (gimp-image-get-active-drawable image))))
(cond ((= work-on-copy TRUE)
(gimp-image-undo-disable image))
((= work-on-copy FALSE)
(gimp-image-undo-group-start image)))
; add an alpha channel to the image
(gimp-layer-add-alpha pic-layer)
; round the edges
(gimp-selection-none image)
(gimp-rect-select image 0 0 radius radius CHANNEL-OP-ADD 0 0)
(gimp-ellipse-select image 0 0 diam diam CHANNEL-OP-SUBTRACT TRUE 0 0)
(gimp-rect-select image (- width radius) 0 radius radius CHANNEL-OP-ADD 0 0)
(gimp-ellipse-select image (- width diam) 0 diam diam CHANNEL-OP-SUBTRACT TRUE 0 0)
(gimp-rect-select image 0 (- height radius) radius radius CHANNEL-OP-ADD 0 0)
(gimp-ellipse-select image 0 (- height diam) diam diam CHANNEL-OP-SUBTRACT TRUE 0 0)
(gimp-rect-select image (- width radius) (- height radius)
radius radius CHANNEL-OP-ADD 0 0)
(gimp-ellipse-select image (- width diam) (- height diam)
diam diam CHANNEL-OP-SUBTRACT TRUE 0 0)
(gimp-edit-clear pic-layer)
(gimp-selection-none image)
; optionally add a shadow
(if (= shadow-toggle TRUE)
(begin
(script-fu-drop-shadow image
pic-layer
shadow-x
shadow-y
shadow-blur
'(0 0 0)
80
TRUE)
(set! width (car (gimp-image-width image)))
(set! height (car (gimp-image-height image)))))
; optionally add a background
(if (= background-toggle TRUE)
(let* ((bg-layer (car (gimp-layer-new image
width
height
type
"Background"
100
NORMAL-MODE))))
(gimp-drawable-fill bg-layer BACKGROUND-FILL)
(gimp-image-add-layer image bg-layer -1)
(gimp-image-raise-layer image pic-layer)
(if (= shadow-toggle TRUE)
(gimp-image-lower-layer image bg-layer))))
; clean up after the script
(cond ((= work-on-copy TRUE)
(gimp-image-undo-enable image))
((= work-on-copy FALSE)
(gimp-image-undo-group-end image)))
(if (= work-on-copy TRUE)
(gimp-display-new image))
(gimp-displays-flush)))
(script-fu-register "script-fu-round-corners"
_"_Round Corners..."
"Round the corners of an image and optionally adds a drop-shadow and a background"
"Sven Neumann <sven@gimp.org>"
"Sven Neumann"
"1999/12/21"
"RGB GRAY"
SF-IMAGE "Image" 0
SF-DRAWABLE "Drawable" 0
SF-ADJUSTMENT _"Edge radius" '(15 0 4096 1 10 0 1)
SF-TOGGLE _"Add drop-shadow" TRUE
SF-ADJUSTMENT _"Shadow X offset" '(8 -4096 4096 1 10 0 1)
SF-ADJUSTMENT _"Shadow Y offset" '(8 -4096 4096 1 10 0 1)
SF-ADJUSTMENT _"Blur radius" '(15 0 1024 1 10 0 1)
SF-TOGGLE _"Add background" TRUE
SF-TOGGLE _"Work on copy" TRUE)
(script-fu-menu-register "script-fu-round-corners"
_"<Image>/Script-Fu/Decor")
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