66 lines
2.2 KiB
Scheme
66 lines
2.2 KiB
Scheme
; Set Colormap v1.1 September 29, 2004
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; by Kevin Cozens <kcozens@interlog.com>
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;
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; Change the colormap of an image to the colors in a specified palette.
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; Included is script-fu-make-cmap-array (available for use in scripts) which
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; returns a GBytes containing the colors from a specified palette.
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; This array can be used as the cmap argument for pika-image-set-colormap.
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; PIKA - Photo and Image Kooker Application
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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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(define (script-fu-make-cmap-array palette)
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(let* (
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(num-colors (car (pika-palette-get-color-count palette)))
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; cons-array is not Scheme standard
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; but was in SIOD and is in script-fu-compat.init
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(cmap (cons-array (* num-colors 3) 'byte))
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(color 0)
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(i 0)
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)
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(while (< i num-colors)
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(set! color (car (pika-palette-entry-get-color palette i)))
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(aset cmap (* i 3) (car color))
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(aset cmap (+ (* i 3) 1) (cadr color))
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(aset cmap (+ (* i 3) 2) (caddr color))
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(set! i (+ i 1))
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)
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cmap
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)
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)
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(define (script-fu-set-cmap img drawable palette)
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(pika-image-set-colormap img
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(script-fu-make-cmap-array palette))
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(pika-displays-flush)
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)
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(script-fu-register "script-fu-set-cmap"
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_"Se_t Colormap..."
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_"Change the colormap of an image to the colors in a specified palette."
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"Kevin Cozens <kcozens@interlog.com>"
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"Kevin Cozens"
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"September 29, 2004"
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"INDEXED*"
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SF-IMAGE "Image" 0
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SF-DRAWABLE "Drawable" 0
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SF-PALETTE _"Palette" "Default"
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)
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(script-fu-menu-register "script-fu-set-cmap" "<Image>/Colors/Map/[Colormap]")
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