/usr/share/gimp/2.0/scripts/phillips-stair-resize.scm is in gimp-plugin-registry 7.20140602ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Stair re-size script for GIMP 2.4
; Copyright (C) 2007 Harry Phillips <script-fu@tux.com.au>
;
; Tags: scale, stair
;
; Author statement:
;
; Resizes the image up or down in multiple steps instead of one.
;
;
; --------------------------------------------------------------------
; Distributed by Gimp FX Foundry project
; --------------------------------------------------------------------
; - Changelog -
; Changelog:
; Version 0.1 (13th August 2007)
; - Initial script
; --------------------------------------------------------------------
;
; 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 (step-size stepNumber
wantedSize
currentSize)
(let* (
(stepSize (/ (- wantedSize currentSize) stepNumber))
)
;Return stepSize
stepSize))
(define (script-fu-stair-resize theImage
theLayer
targetSide
targetValue
stepsWanted)
(let* (
;Read the image width and height
(imageWidth (car (gimp-image-width theImage)))
(imageHeight (car (gimp-image-height theImage)))
(sizeList 0)
(targetWidth 0)
(targetHeight 0)
(realWidth 0)
(realHeight 0)
(nextWidth 0)
(nextHeight 0)
(stepsX 0)
(stepsY 0)
)
;Start an undo group so the process can be undone with one undo
(gimp-image-undo-group-start theImage)
;Select none
(gimp-selection-none theImage)
;Calculate the required step size
(if (= targetSide 0)
;True width is the target
(begin
(set! stepsX (step-size stepsWanted targetValue imageWidth))
(set! realWidth (+ (* stepsX stepsWanted) imageWidth))
(set! realHeight (/ (* imageHeight realWidth) imageWidth))
(set! stepsY (step-size stepsWanted realHeight imageHeight))
)
;False the height is the target
(begin
(set! stepsY (step-size stepsWanted targetValue imageHeight))
(set! realHeight (+ (* stepsY stepsWanted) imageHeight))
(set! realWidth (/ (* imageWidth realHeight) imageHeight))
(set! stepsX (step-size stepsWanted realWidth imageWidth))
)
)
;Set the first resize values
(set! nextWidth (+ imageWidth stepsX))
(set! nextHeight (+ imageHeight stepsY))
;Change the image size by a step at a time
(while (> stepsWanted 0)
; (gimp-layer-scale theLayer nextWidth nextHeight FALSE)
(gimp-image-scale theImage nextWidth nextHeight)
(set! stepsWanted (- stepsWanted 1))
(set! nextWidth (+ nextWidth stepsX))
(set! nextHeight (+ nextHeight stepsY))
)
;Finish the undo group for the process
(gimp-image-undo-group-end theImage)
;Ensure the updated image is displayed now
(gimp-displays-flush)
))
(script-fu-register "script-fu-stair-resize"
_"Step Resize"
_"Resizes the image to desired size in small steps"
"Harry Phillips"
"Harry Phillips"
"13 August 2007"
"*"
SF-IMAGE "Image" 0
SF-DRAWABLE "Drawable" 0
SF-OPTION _"Target side" '(_"Width" _"Height")
SF-VALUE _"Target value" "1024"
SF-ADJUSTMENT _"Numbers of steps" '(10 2 20 1 1 0 0)
)
(script-fu-menu-register "script-fu-stair-resize"
"<Image>/FX-Foundry/Toolbox")
|