/usr/share/gimp/2.0/scripts/theuncle2k-cut-layers-out-of-boundaries.scm is in gimp-plugin-registry 7.20140602+b4.
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
;
; Cut layers out of boundaries for GIMP 2.6
; Original author: TheUncle2k
;
; Tags: cut, crop
;
; Author statement:
;
; Cuts any portion of the active
; layer placed out of the image boundaries. The action
; can also be performed on all the available layers at once.
; If the layer is completely out of the image, it will be deleted.
;
; --------------------------------------------------------------------
; Distributed by Gimp FX Foundry project
; --------------------------------------------------------------------
; - Changelog -
;
; --------------------------------------------------------------------
;
; 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.
;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(script-fu-register
"script-fu-cut-layers-out-of-boundaries"
_"Cut layers out of boundaries..."
_"Cut the portion of the active layer or of all layers that are outside of the image boundaries"
"TheUncle2k"
"copyright 2009, TheUncle2k / http://theuncle2k.deviantart.com"
"21st December 2009"
""
SF-IMAGE "Input Image" 0
SF-DRAWABLE "Input Layer" 0
SF-TOGGLE _"Cut all" FALSE
)
(script-fu-menu-register "script-fu-cut-layers-out-of-boundaries" _"<Image>/FX-Foundry/Layer Effects")
(define (script-fu-cut-layers-out-of-boundaries inImg inDrawable inCutAll)
(let* (
(theImgWidth (car (gimp-image-width inImg)))
(theImgHeight (car (gimp-image-height inImg)))
(theIterations 0)
(theLayerNum 1)
(theWorkingLayer 0)
(theLayerWidth 0)
(theLayerHeight 0)
(theLayerOffsetX 0)
(theLayerOffsetY 0)
(theOutRight 0)
(theOutDown 0)
(theDeleted 0)
)
;begin undo group
(gimp-image-undo-group-start inImg)
(set! theWorkingLayer inDrawable)
;verify if cycling through all layers is needed
(if (equal? inCutAll TRUE)
;save how many layers are available
(set! theLayerNum (car(gimp-image-get-layers inImg)))
)
(while (< theIterations theLayerNum)
;if working on all layers, set the next layer available, starting from the first
;in the stack
(if (equal? inCutAll TRUE)
(begin
(set! theWorkingLayer (aref (cadr (gimp-image-get-layers inImg)) theIterations))
(gimp-image-set-active-layer inImg theWorkingLayer)
)
)
;save the position and dimensions of the layer
(set! theLayerOffsetX (car(gimp-drawable-offsets theWorkingLayer)))
(set! theLayerOffsetY (cadr(gimp-drawable-offsets theWorkingLayer)))
(set! theLayerWidth (car(gimp-drawable-width theWorkingLayer)))
(set! theLayerHeight (car(gimp-drawable-height theWorkingLayer)))
;check if the layer is out of the right boundary and save the amount
(if (> (+ theLayerWidth theLayerOffsetX) theImgWidth)
(set! theOutRight (- (+ theLayerWidth theLayerOffsetX) theImgWidth))
)
;check if the layer is out of the bottom boundary and save the amount
(if (> (+ theLayerHeight theLayerOffsetY) theImgHeight)
(set! theOutDown (- (+ theLayerHeight theLayerOffsetY) theImgHeight))
)
;if the layer is completely out of the left boundary delete it
(cond ((< theLayerOffsetX (- (- theLayerWidth 1)))
(begin
(gimp-image-remove-layer inImg theWorkingLayer)
(set! theDeleted 1)
);end begin
)
((< theLayerOffsetX 0)
(begin
;resize the layer to fit the left boundary of the image.
(gimp-layer-resize theWorkingLayer
(- theLayerWidth (- theLayerOffsetX))
theLayerHeight
theLayerOffsetX
0)
;update the dimensions of the layer
(set! theLayerWidth (car (gimp-drawable-width theWorkingLayer)))
(set! theLayerHeight (car (gimp-drawable-height theWorkingLayer)))
);end begin
)
);end cond
;work on the layer if it has not been already deleted
(if (= theDeleted 0)
;if the layer is completely out of the top boundary delete it
(cond ((< theLayerOffsetY (- (- theLayerHeight 1)))
(begin
(gimp-image-remove-layer inImg theWorkingLayer)
(set! theDeleted 1)
);end begin
)
((< theLayerOffsetY 0)
(begin
;resize the layer to fit the top boundary of the image.
(gimp-layer-resize theWorkingLayer
theLayerWidth
(- theLayerHeight (- theLayerOffsetY))
0
theLayerOffsetY)
;update the dimensions of the layer
(set! theLayerWidth (car (gimp-drawable-width theWorkingLayer)))
(set! theLayerHeight (car (gimp-drawable-height theWorkingLayer)))
);end begin
)
);end cond
);end if
;work on the layer if it has not been already deleted
(if (= theDeleted 0)
;if the layer is completely out of the right boundary delete it
(cond ((> theOutRight (- theLayerWidth 1))
(begin
(gimp-image-remove-layer inImg theWorkingLayer)
(set! theDeleted 1)
);end begin
)
((> theOutRight 0)
(begin
;resize the layer to fit the right boundary of the image.
(gimp-layer-resize theWorkingLayer
(- theLayerWidth theOutRight)
theLayerHeight
0
0)
;update the dimensions of the layer
(set! theLayerWidth (car(gimp-drawable-width theWorkingLayer)))
(set! theLayerHeight (car(gimp-drawable-height theWorkingLayer)))
);end begin
)
);end cond
);end if
;work on the layer if it has not been already deleted
(if (= theDeleted 0)
;if the layer is completely out of the bottom boundary delete it
(cond ((> theOutDown (- theLayerHeight 1))
(begin
(gimp-image-remove-layer inImg theWorkingLayer)
(set! theDeleted 1)
);end begin
)
((> theOutDown 0)
(begin
;resize the layer to fit the bottom boundary of the image.
(gimp-layer-resize theWorkingLayer
theLayerWidth
(- theLayerHeight theOutDown)
0
0)
;update the dimensions of the layer
(set! theLayerWidth (car(gimp-drawable-width theWorkingLayer)))
(set! theLayerHeight (car(gimp-drawable-height theWorkingLayer)))
);end begin
)
);end cond
);end if
(set! theOutRight 0)
(set! theOutDown 0)
;do not increase the counter if the layer has been deleted to consider the layer number variation
;caused by the removal. For the same reason reduce the number of layers by one.
(if (= theDeleted 0)
(set! theIterations (+ theIterations 1))
(set! theLayerNum (- theLayerNum 1))
)
(set! theDeleted 0)
);end while
;end undo group
(gimp-image-undo-group-end inImg)
(gimp-displays-flush)
(list inImg inDrawable theLayerNum)
);end let
);end define
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