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e125c30cfd
The libgimp wrapper was just calling the PDB procedure. Get rid of the wrapper and make the PDB proc public. Also reorder the name argument to be in the second place, just like it was for the wrapper.
186 lines
7.2 KiB
Scheme
186 lines
7.2 KiB
Scheme
; GIMP - The GNU 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 3 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, see <https://www.gnu.org/licenses/>.
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;
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;
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; drop-shadow.scm version 1.05 2011/4/21
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;
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; CHANGE-LOG:
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; 1.00 - initial release
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; 1.01 - fixed the problem with a remaining copy of the selection
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; 1.02 - some code cleanup, no real changes
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; 1.03 - can't call gimp-drawable-edit-fill until layer is added to image!
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; 1.04
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; 1.05 - replaced deprecated function calls with new ones for 2.8
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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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;
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; Adds a drop-shadow of the current selection or alpha-channel.
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;
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; This script is derived from my script add-shadow, which has become
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; obsolete now. Thanks to Andrew Donkin (ard@cs.waikato.ac.nz) for his
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; idea to add alpha-support to add-shadow.
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(define (script-fu-drop-shadow image
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drawables
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shadow-transl-x
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shadow-transl-y
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shadow-blur
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shadow-color
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shadow-opacity
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allow-resize)
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(let* (
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(drawable (vector-ref drawables 0))
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(shadow-blur (max shadow-blur 0))
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(shadow-opacity (min shadow-opacity 100))
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(shadow-opacity (max shadow-opacity 0))
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(type (car (gimp-drawable-type-with-alpha drawable)))
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(image-width (car (gimp-image-get-width image)))
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(image-height (car (gimp-image-get-height image)))
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(from-selection 0)
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(active-selection 0)
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(shadow-layer 0)
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)
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(gimp-context-push)
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(gimp-context-set-defaults)
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(gimp-image-set-selected-layers image (make-vector 1 drawable))
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(gimp-image-undo-group-start image)
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(gimp-layer-add-alpha drawable)
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(if (= (car (gimp-selection-is-empty image)) TRUE)
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(begin
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(gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
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(set! from-selection FALSE))
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(begin
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(set! from-selection TRUE)
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(set! active-selection (car (gimp-selection-save image)))))
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(let* ((selection-bounds (gimp-selection-bounds image))
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(select-offset-x (cadr selection-bounds))
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(select-offset-y (caddr selection-bounds))
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(select-width (- (cadr (cddr selection-bounds)) select-offset-x))
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(select-height (- (caddr (cddr selection-bounds)) select-offset-y))
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(shadow-width (+ select-width (* 2 shadow-blur)))
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(shadow-height (+ select-height (* 2 shadow-blur)))
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(shadow-offset-x (- select-offset-x shadow-blur))
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(shadow-offset-y (- select-offset-y shadow-blur)))
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(if (= allow-resize TRUE)
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(let* ((new-image-width image-width)
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(new-image-height image-height)
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(image-offset-x 0)
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(image-offset-y 0))
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(if (< (+ shadow-offset-x shadow-transl-x) 0)
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(begin
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(set! image-offset-x (- 0 (+ shadow-offset-x
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shadow-transl-x)))
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(set! shadow-offset-x (- 0 shadow-transl-x))
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(set! new-image-width (+ new-image-width image-offset-x))))
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(if (< (+ shadow-offset-y shadow-transl-y) 0)
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(begin
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(set! image-offset-y (- 0 (+ shadow-offset-y
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shadow-transl-y)))
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(set! shadow-offset-y (- 0 shadow-transl-y))
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(set! new-image-height (+ new-image-height image-offset-y))))
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(if (> (+ (+ shadow-width shadow-offset-x) shadow-transl-x)
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new-image-width)
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(set! new-image-width
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(+ (+ shadow-width shadow-offset-x) shadow-transl-x)))
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(if (> (+ (+ shadow-height shadow-offset-y) shadow-transl-y)
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new-image-height)
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(set! new-image-height
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(+ (+ shadow-height shadow-offset-y) shadow-transl-y)))
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(gimp-image-resize image
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new-image-width
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new-image-height
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image-offset-x
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image-offset-y)
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)
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)
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(set! shadow-layer (car (gimp-layer-new image
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"Drop Shadow"
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shadow-width
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shadow-height
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type
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shadow-opacity
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LAYER-MODE-NORMAL)))
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(gimp-image-set-selected-layers image (make-vector 1 drawable))
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(gimp-image-insert-layer image shadow-layer 0 -1)
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(gimp-layer-set-offsets shadow-layer
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shadow-offset-x
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shadow-offset-y))
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(gimp-drawable-fill shadow-layer FILL-TRANSPARENT)
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(gimp-context-set-background shadow-color)
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(gimp-drawable-edit-fill shadow-layer FILL-BACKGROUND)
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(gimp-selection-none image)
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(gimp-layer-set-lock-alpha shadow-layer FALSE)
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(if (>= shadow-blur 1.0)
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(gimp-drawable-merge-new-filter shadow-layer "gegl:gaussian-blur" 0 LAYER-MODE-REPLACE 1.0 "std-dev-x" (* 0.32 shadow-blur)
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"std-dev-y" (* 0.32 shadow-blur)
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"filter" "auto")
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)
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(gimp-item-transform-translate shadow-layer shadow-transl-x shadow-transl-y)
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(if (= from-selection TRUE)
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(begin
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(gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
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(gimp-drawable-edit-clear shadow-layer)
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(gimp-image-remove-channel image active-selection)))
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(if (and
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(= (car (gimp-layer-is-floating-sel drawable)) 0)
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(= from-selection FALSE))
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(gimp-image-raise-item image drawable))
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(gimp-image-set-selected-layers image (make-vector 1 drawable))
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(gimp-image-undo-group-end image)
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(gimp-displays-flush)
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(gimp-context-pop)
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)
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)
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(script-fu-register-filter "script-fu-drop-shadow"
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_"_Drop Shadow (legacy)..."
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_"Add a drop shadow to the selected region (or alpha)"
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"Sven Neumann <sven@gimp.org>"
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"Sven Neumann"
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"1999/12/21"
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"RGB* GRAY*"
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SF-ONE-OR-MORE-DRAWABLE
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SF-ADJUSTMENT _"Offset X" '(4 -4096 4096 1 10 0 1)
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SF-ADJUSTMENT _"Offset Y" '(4 -4096 4096 1 10 0 1)
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SF-ADJUSTMENT _"Blur radius" '(15 0 1024 1 10 0 1)
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SF-COLOR _"Color" "black"
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SF-ADJUSTMENT _"Opacity" '(60 0 100 1 10 0 0)
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SF-TOGGLE _"Allow resizing" TRUE
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)
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(script-fu-menu-register "script-fu-drop-shadow"
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"<Image>/Filters/Light and Shadow/[Shadow]")
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