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(define (split-filename filename)
(let ((ext (memv #\. (string->list filename))))
(cons
(substring filename 0 (- (string-length filename) (length ext)))
(list->string (cdr ext)))))
(define (string-minus str num)
(substring str 0 (- (string-length str) num)))
(define (unretina-save image)
(let* ((parts (split-filename (car (gimp-image-get-filename image))))
(newname (string-append (string-minus (car parts) 3) "."
(cdr parts))))
(gimp-file-save RUN-NONINTERACTIVE image
(car (gimp-image-get-active-drawable image))
newname newname)))
(define (unretina image)
(unretina-save (half image)))
(define (half image)
(let ((newwidth (/ (car (gimp-image-width image)) 2))
(newheight (/ (car (gimp-image-height image)) 2)))
(gimp-image-scale image newwidth newheight))
(gimp-displays-flush)
image)
(script-fu-register "half"
"Halfsize image"
"Reduce the size of an image to 50%"
"Tom Willemse <tom@ryuslash.org>"
"Tom Willemse"
"2014-11-18"
"RGB*, GRAY*"
SF-IMAGE "Image" 0)
(script-fu-menu-register "half" "<Image>/Picturefix")
(script-fu-register "unretina"
"Unretina image"
"Reduce the size of an image and rename for non-retina displays."
"Tom Willemse <tom@ryuslash.org>"
"Tom Willemse"
"2014-12-01"
"RGB*, GRAY*"
SF-IMAGE "Image" 0)
(script-fu-menu-register "unretina" "<Image>/Picturefix")
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