5f2ca28c69
2004-11-11 Michael Natterer <mitch@gimp.org> * plug-ins/script-fu/scripts/add-bevel.scm * plug-ins/script-fu/scripts/addborder.scm * plug-ins/script-fu/scripts/carve-it.scm * plug-ins/script-fu/scripts/carved-logo.scm * plug-ins/script-fu/scripts/chip-away.scm * plug-ins/script-fu/scripts/clothify.scm * plug-ins/script-fu/scripts/font-map.scm * plug-ins/script-fu/scripts/slide.scm * plug-ins/script-fu/scripts/swirltile.scm: don't call gimp-edit-* functions on drawables which are not added to an image because this will be forbidden soon (because it can trash the image's undo stack).
245 lines
7.1 KiB
Scheme
245 lines
7.1 KiB
Scheme
; The GIMP -- an image manipulation program
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; Copyright (C) 1995 Spencer Kimball and Peter Mattis
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;
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; This program is free software; you can redistribute it and/or modify
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; it under the terms of the GNU General Public License as published by
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; the Free Software Foundation; either version 2 of the License, or
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; (at your option) any later version.
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;
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; This program is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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; GNU General Public License for more details.
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;
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; You should have received a copy of the GNU General Public License
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; along with this program; if not, write to the Free Software
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; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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;
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;
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; slide.scm version 0.41 2004/03/28
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;
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; CHANGE-LOG:
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; 0.20 - first public release
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; 0.30 - some code cleanup
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; now uses the rotate plug-in to improve speed
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; 0.40 - changes to work with gimp-1.1
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; if the image was rotated, rotate the whole thing back when finished
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; 0.41 - changes to work with gimp-2.0, slightly correct text offsets,
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; Nils Philippsen <nphilipp@redhat.com> 2004/03/28
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;
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; !still in development!
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; TODO: - change the script so that the film is rotated, not the image
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; - antialiasing
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; - make 'add background' an option
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; - ?
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;
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; Copyright (C) 1997-1999 Sven Neumann <sven@gimp.org>
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;
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; makes your picture look like a slide
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;
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; The script works on RGB and grayscale images that contain only
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; one layer. The image is cropped to fit into an aspect ratio of 1:1,5.
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; It creates a copy of the image or can optionally work on the original.
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; The script uses the current background color to create a background
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; layer.
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(define (crop width height ratio)
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(cond ((>= width (* ratio height)) (* ratio height))
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((< width (* ratio height)) width)))
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(define (script-fu-slide img
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drawable
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text
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number
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fontname
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font-color
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work-on-copy)
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(let* ((type (car (gimp-drawable-type-with-alpha drawable)))
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(image (cond ((= work-on-copy TRUE)
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(car (gimp-image-duplicate img)))
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((= work-on-copy FALSE)
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img)))
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(owidth (car (gimp-image-width image)))
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(oheight (car (gimp-image-height image)))
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(ratio (if (>= owidth oheight) (/ 3 2)
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(/ 2 3)))
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(crop-width (crop owidth oheight ratio))
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(crop-height (/ crop-width ratio))
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(width (* (max crop-width crop-height) 1.05))
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(height (* (min crop-width crop-height) 1.5))
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(hole-width (/ width 20))
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(hole-space (/ width 8))
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(hole-height (/ width 12))
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(hole-radius (/ hole-width 4))
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(hole-start (- (/ (rand 1000) 1000) 0.5))
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(film-layer (car (gimp-layer-new image
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width
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height
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type
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"Film"
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100
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NORMAL-MODE)))
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(bg-layer (car (gimp-layer-new image
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width
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height
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type
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"Background"
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100
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NORMAL-MODE)))
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(pic-layer (car (gimp-image-get-active-drawable image)))
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(numbera (string-append number "A")))
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(gimp-context-push)
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(gimp-image-undo-disable image)
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; add an alpha channel to the image
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(gimp-layer-add-alpha pic-layer)
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; crop, resize and eventually rotate the image
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(gimp-image-crop image
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crop-width
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crop-height
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(/ (- owidth crop-width) 2)
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(/ (- oheight crop-height) 2))
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(gimp-image-resize image
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width
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height
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(/ (- width crop-width) 2)
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(/ (- height crop-height) 2))
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(if (< ratio 1) (plug-in-rotate 1
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image
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pic-layer
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1
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FALSE))
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; add the background layer
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(gimp-drawable-fill bg-layer BACKGROUND-FILL)
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(gimp-image-add-layer image bg-layer -1)
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; add the film layer
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(gimp-context-set-background '(0 0 0))
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(gimp-drawable-fill film-layer BACKGROUND-FILL)
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(gimp-image-add-layer image film-layer -1)
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; add the text
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(gimp-context-set-foreground font-color)
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(gimp-floating-sel-anchor (car (gimp-text-fontname image
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film-layer
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(+ hole-start (* -0.25 width))
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(* 0.01 height)
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text
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0
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TRUE
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(* 0.040 height) PIXELS fontname)))
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(gimp-floating-sel-anchor (car (gimp-text-fontname image
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film-layer
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(+ hole-start (* 0.75 width))
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(* 0.01 height)
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text
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0
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TRUE
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(* 0.040 height) PIXELS
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fontname )))
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(gimp-floating-sel-anchor (car (gimp-text-fontname image
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film-layer
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(+ hole-start (* 0.35 width))
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0.0
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number
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0
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TRUE
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(* 0.050 height) PIXELS
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fontname )))
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(gimp-floating-sel-anchor (car (gimp-text-fontname image
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film-layer
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(+ hole-start (* 0.35 width))
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(* 0.94 height)
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number
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0
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TRUE
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(* 0.050 height) PIXELS
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fontname )))
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(gimp-floating-sel-anchor (car (gimp-text-fontname image
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film-layer
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(+ hole-start (* 0.85 width))
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(* 0.945 height)
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numbera
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0
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TRUE
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(* 0.045 height) PIXELS
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fontname )))
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; create a mask for the holes and cut them out
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(let* ((film-mask (car (gimp-layer-create-mask film-layer ADD-WHITE-MASK)))
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(hole hole-start)
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(top-y (* height 0.06))
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(bottom-y(* height 0.855)))
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(gimp-layer-add-mask film-layer film-mask)
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(gimp-selection-none image)
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(while (< hole 8)
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(gimp-rect-select image
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(* hole-space hole)
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top-y
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hole-width
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hole-height
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CHANNEL-OP-ADD
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FALSE
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0)
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(gimp-rect-select image
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(* hole-space hole)
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bottom-y
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hole-width
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hole-height
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CHANNEL-OP-ADD
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FALSE
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0)
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(set! hole (+ hole 1)))
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(gimp-context-set-foreground '(0 0 0))
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(gimp-edit-fill film-mask BACKGROUND-FILL)
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(gimp-selection-none image)
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(plug-in-gauss-rle 1 image film-mask hole-radius TRUE TRUE)
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(gimp-threshold film-mask 127 255)
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(gimp-layer-remove-mask film-layer MASK-APPLY))
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; reorder the layers
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(gimp-image-raise-layer image pic-layer)
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(gimp-image-raise-layer image pic-layer)
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; eventually rotate the whole thing back
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(if (< ratio 1)
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(plug-in-rotate 1
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image
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pic-layer
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3
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TRUE))
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; clean up after the script
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(gimp-selection-none image)
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(gimp-image-undo-enable image)
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(if (= work-on-copy TRUE)
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(gimp-display-new image))
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(gimp-displays-flush)
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(gimp-context-pop)))
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(script-fu-register "script-fu-slide"
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_"<Image>/Script-Fu/Decor/_Slide..."
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"Gives the image the look of a slide"
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"Sven Neumann <sven@gimp.org>"
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"Sven Neumann"
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"2004/03/28"
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"RGB GRAY"
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SF-IMAGE "Image" 0
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SF-DRAWABLE "Drawable" 0
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SF-STRING _"Text" "The GIMP"
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SF-STRING _"Number" "32"
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SF-FONT _"Font" "Serif"
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SF-COLOR _"Font color" '(255 180 0)
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SF-TOGGLE _"Work on copy" TRUE)
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