89c359ce47
GLib has a specific type for byte arrays: `GBytes` (and it's underlying GType `G_TYPE_BYTES`). By using this type, we can avoid having a `GimpUint8Array` which is a bit cumbersome to use for both the C API, as well as bindings. By using `GBytes`, we allow other languages to pass on byte arrays as they are used to, while the bindings will make sure to do the right thing. In the end, it makes the API a little bit simpler for everyone, and reduces confusion for people who are used to working with byte arrays in other C/GLib based code (and not having 2 different types to denote the same thing). Related: https://gitlab.gnome.org/GNOME/gimp/-/issues/5919
65 lines
2.2 KiB
Scheme
65 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 gimp-image-set-colormap.
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; 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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(define (script-fu-make-cmap-array palette)
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(let* (
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(num-colors (car (gimp-palette-get-color-count palette)))
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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 (gimp-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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(gimp-image-set-colormap img
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(* (car (gimp-palette-get-color-count palette)) 3)
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(script-fu-make-cmap-array palette))
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(gimp-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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