1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
|
; 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/>.
; Resizes the image so as to include the selected layer.
; The resulting image has the selected layer size.
; Copyright (C) 2002 Chauk-Mean PROUM
;
(define (script-fu-util-image-resize-from-layer image layer)
(let* (
(width (car (gimp-drawable-get-width layer)))
(height (car (gimp-drawable-get-height layer)))
(posx (- (car (gimp-drawable-get-offsets layer))))
(posy (- (cadr (gimp-drawable-get-offsets layer))))
)
(gimp-image-resize image width height posx posy)
)
)
; Add the specified layers to the image.
; The layers will be added in the given order below the
; active layer.
;
(define (script-fu-util-image-add-layers image . layers)
(while (not (null? layers))
(let ((layer (car layers)))
(set! layers (cdr layers))
(gimp-image-insert-layer image layer 0 -1)
(gimp-image-lower-item image layer)
)
)
)
; Allow command line usage of GIMP such as:
;
; gimp -i -b '(with-files "*.png" <body>)'
;
; where <body> is the code that handles whatever processing you want to
; perform on the files. There are four variables that are available
; within the <body>: 'basename', 'image', 'filename' and 'layer'.
; The 'basename' is the name of the file with its extension removed,
; while the other three variables are self-explanatory.
; You basically write your code as though it were processing a single
; 'image' and the 'with-files' macro applies it to all of the files
; matching the pattern.
;
; For example, to invert the colors of all of the PNG files in the
; start directory:
;
; gimp -i -b '(with-files "*.png" (gimp-drawable-invert layer FALSE) \
; (gimp-file-save 1 image layer filename))'
;
; To do the same thing, but saving them as jpeg instead:
;
; gimp -i -b '(with-files "*.png" (gimp-drawable-invert layer FALSE) \
; (gimp-file-save 1 image layer \
; (string-append basename ".jpg") ))'
; butlast is needed below.
; Not in R5RS but in simply-scheme and chicken dialects.
; aka drop-right.
; Returns new list with right element deleted.
(define (butlast x)
(if (= (length x) 1)
'()
(reverse (cdr (reverse x)))
)
)
(define-macro (with-files pattern . body)
(let ((loop (gensym))
(filenames (gensym))
(filename (gensym)))
`(begin
(let ,loop ((,filenames (cadr (file-glob ,pattern 1))))
(unless (null? ,filenames)
(let* ((filename (car ,filenames))
(image (catch #f (car (gimp-file-load RUN-NONINTERACTIVE
filename))))
(layer (if image (vector-ref (gimp-image-get-selected-layers image) 0) #f))
(basename (unbreakupstr (butlast (strbreakup filename ".")) ".")))
(when image
,@body
(gimp-image-delete image)))
(,loop (cdr ,filenames))
)
)
)
)
)
|
