summaryrefslogtreecommitdiffstats
path: root/plug-ins/script-fu/scripts/slide.scm
blob: 4889d62d4aa2886fe0b8bd59fe944a3961f027ab (plain)
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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
; 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/>.
;
;
; slide.scm   version 0.41   2004/03/28
;
; CHANGE-LOG:
; 0.20 - first public release
; 0.30 - some code cleanup
;        now uses the rotate plug-in to improve speed
; 0.40 - changes to work with gimp-1.1
;        if the image was rotated, rotate the whole thing back when finished
; 0.41 - changes to work with gimp-2.0, slightly correct text offsets,
;        Nils Philippsen <nphilipp@redhat.com> 2004/03/28
;
; !still in development!
; TODO: - change the script so that the film is rotated, not the image
;       - antialiasing
;       - make 'add background' an option
;       - ?
;
; Copyright (C) 1997-1999 Sven Neumann <sven@gimp.org>
;
; makes your picture look like a slide
;
; The script works on RGB and grayscale images that contain only
; one layer. The image is cropped to fit into an aspect ratio of 1:1,5.
; 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.


(define (script-fu-slide img
                         drawable
                         text
                         number
                         fontname
                         font-color
                         work-on-copy)

  (define (crop width height ratio)
    (if (>= width (* ratio height))
        (* ratio height)
        width
    )
  )

  (let* (
        (type (car (gimp-drawable-type-with-alpha drawable)))
        (image (cond ((= work-on-copy TRUE)
                      (car (gimp-image-duplicate img)))
                     ((= work-on-copy FALSE)
                      img)))
        (owidth (car (gimp-image-width image)))
        (oheight (car (gimp-image-height image)))
        (ratio (if (>= owidth oheight) (/ 3 2)
                                       (/ 2 3)))
        (crop-width (crop owidth oheight ratio))
        (crop-height (/ crop-width ratio))
        (width (* (max crop-width crop-height) 1.05))
        (height (* (min crop-width crop-height) 1.5))
        (hole-width (/ width 20))
        (hole-space (/ width 8))
        (hole-height (/ width 12))
        (hole-radius (/ hole-width 4))
        (hole-start (- (/ (rand 1000) 1000) 0.5))
        (film-layer (car (gimp-layer-new image
                                         width
                                         height
                                         type
                                         "Film"
                                         100
                                         LAYER-MODE-NORMAL)))
        (bg-layer (car (gimp-layer-new image
                                       width
                                       height
                                       type
                                       "Background"
                                       100
                                       LAYER-MODE-NORMAL)))
        (pic-layer (car (gimp-image-get-active-drawable image)))
        (numbera (string-append number "A"))
        )

  (gimp-context-push)
  (gimp-context-set-paint-mode LAYER-MODE-NORMAL)
  (gimp-context-set-opacity 100.0)
  (gimp-context-set-feather FALSE)

  (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)

; crop, resize and eventually rotate the image
  (gimp-image-crop image
                   crop-width
                   crop-height
                   (/ (- owidth crop-width) 2)
                   (/ (- oheight crop-height) 2))
  (gimp-image-resize image
                     width
                     height
                     (/ (- width crop-width) 2)
                     (/ (- height crop-height) 2))
  (if (< ratio 1)
      (plug-in-rotate RUN-NONINTERACTIVE image pic-layer 1 FALSE)
  )

; add the background layer
  (gimp-drawable-fill bg-layer FILL-BACKGROUND)
  (gimp-image-insert-layer image bg-layer 0 -1)

; add the film layer
  (gimp-context-set-background '(0 0 0))
  (gimp-drawable-fill film-layer FILL-BACKGROUND)
  (gimp-image-insert-layer image film-layer 0 -1)

; add the text
  (gimp-context-set-foreground font-color)
  (gimp-floating-sel-anchor (car (gimp-text-fontname image
                                            film-layer
                                            (+ hole-start (* -0.25 width))
                                            (* 0.01 height)
                                            text
                                            0
                                            TRUE
                                            (* 0.040 height) PIXELS fontname)))
  (gimp-floating-sel-anchor (car (gimp-text-fontname image
                                            film-layer
                                            (+ hole-start (* 0.75 width))
                                            (* 0.01 height)
                                            text
                                            0
                                            TRUE
                                            (* 0.040 height) PIXELS
                                            fontname )))
  (gimp-floating-sel-anchor (car (gimp-text-fontname image
                                            film-layer
                                            (+ hole-start (* 0.35 width))
                                            0.0
                                            number
                                            0
                                            TRUE
                                            (* 0.050 height) PIXELS
                                            fontname )))
  (gimp-floating-sel-anchor (car (gimp-text-fontname image
                                            film-layer
                                            (+ hole-start (* 0.35 width))
                                            (* 0.94 height)
                                            number
                                            0
                                            TRUE
                                            (* 0.050 height) PIXELS
                                            fontname )))
  (gimp-floating-sel-anchor (car (gimp-text-fontname image
                                            film-layer
                                            (+ hole-start (* 0.85 width))
                                            (* 0.945 height)
                                            numbera
                                            0
                                            TRUE
                                            (* 0.045 height) PIXELS
                                            fontname )))

; create a mask for the holes and cut them out
  (let* (
        (film-mask (car (gimp-layer-create-mask film-layer ADD-MASK-WHITE)))
        (hole hole-start)
        (top-y (* height 0.06))
        (bottom-y (* height 0.855))
        )

    (gimp-layer-add-mask film-layer film-mask)

    (gimp-selection-none image)
    (while (< hole 8)
           (gimp-image-select-rectangle image
                                        CHANNEL-OP-ADD
                                        (* hole-space hole)
                                        top-y
                                        hole-width
                                        hole-height)
           (gimp-image-select-rectangle image
                                        CHANNEL-OP-ADD
                                        (* hole-space hole)
                                        bottom-y
                                        hole-width
                                        hole-height)
           (set! hole (+ hole 1))
    )

    (gimp-context-set-foreground '(0 0 0))
    (gimp-drawable-edit-fill film-mask FILL-BACKGROUND)
    (gimp-selection-none image)
    (plug-in-gauss-rle RUN-NONINTERACTIVE image film-mask hole-radius TRUE TRUE)
    (gimp-threshold film-mask 127 255)

    (gimp-layer-remove-mask film-layer MASK-APPLY)
  )

; reorder the layers
  (gimp-image-raise-item image pic-layer)
  (gimp-image-raise-item image pic-layer)

; eventually rotate the whole thing back
  (if (< ratio 1)
      (plug-in-rotate RUN-NONINTERACTIVE image pic-layer 3 TRUE)
  )

; clean up after the script
  (gimp-selection-none image)

  (if (= work-on-copy TRUE)
    (begin
      (gimp-display-new image)
      (gimp-image-undo-enable image)
    )
    (gimp-image-undo-group-end image)
  )

  (gimp-displays-flush)

  (gimp-context-pop)
  )
)

(script-fu-register "script-fu-slide"
  _"_Slide..."
  _"Add a slide-film like frame, sprocket holes, and labels to an image"
  "Sven Neumann <sven@gimp.org>"
  "Sven Neumann"
  "2004/03/28"
  "RGB GRAY"
  SF-IMAGE     "Image"         0
  SF-DRAWABLE  "Drawable"      0
  SF-STRING   _"Text"          "GIMP"
  SF-STRING   _"Number"        "32"
  SF-FONT     _"Font"          "Serif"
  SF-COLOR    _"Font color"    '(255 180 0)
  SF-TOGGLE   _"Work on copy"  TRUE
)

(script-fu-menu-register "script-fu-slide"
                         "<Image>/Filters/Decor")