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+; GIMP - The GNU 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, see <https://www.gnu.org/licenses/>.
+;
+;
+; 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
+; obsolete 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)))
+ (image (cond ((= work-on-copy TRUE)
+ (car (gimp-image-duplicate img)))
+ ((= work-on-copy FALSE)
+ img)))
+ ; active drawable is not necessarily the active layer
+ (pic-layer (car (gimp-image-get-active-layer image)))
+ (type (car (gimp-drawable-type-with-alpha pic-layer)))
+ )
+
+ (gimp-context-push)
+ (gimp-context-set-defaults)
+
+ (if (= work-on-copy TRUE)
+ (gimp-image-undo-disable image)
+ (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-image-select-rectangle image CHANNEL-OP-ADD 0 0 radius radius)
+ (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT 0 0 diam diam)
+ (gimp-image-select-rectangle image CHANNEL-OP-ADD (- width radius) 0 radius radius)
+ (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT (- width diam) 0 diam diam)
+ (gimp-image-select-rectangle image CHANNEL-OP-ADD 0 (- height radius) radius radius)
+ (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT 0 (- height diam) diam diam)
+ (gimp-image-select-rectangle image CHANNEL-OP-ADD (- width radius) (- height radius)
+ radius radius)
+ (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT (- width diam) (- height diam)
+ diam diam)
+ (gimp-drawable-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
+ LAYER-MODE-NORMAL))))
+ (gimp-drawable-fill bg-layer FILL-BACKGROUND)
+ (gimp-image-insert-layer image bg-layer 0 -1)
+ (gimp-image-raise-item image pic-layer)
+ (if (= shadow-toggle TRUE)
+ (gimp-image-lower-item image bg-layer))))
+
+; clean up after the script
+ (if (= work-on-copy TRUE)
+ (gimp-image-undo-enable image)
+ (gimp-image-undo-group-end image)
+ )
+
+ (if (= work-on-copy TRUE)
+ (gimp-display-new image))
+ (gimp-context-pop)
+ (gimp-displays-flush))
+)
+
+(script-fu-register "script-fu-round-corners"
+ _"_Round Corners..."
+ _"Round the corners of an image and optionally add a drop-shadow and 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>/Filters/Decor")