8a46203e5a
2004-11-18 Michael Natterer <mitch@gimp.org> Script-Fu string cleanup/simplification: apply the same fix for menu path translation that was done for plug-ins a while ago. * plug-ins/script-fu/script-fu.c (script_fu_auxillary_init): use gimp_plugin_menu_register() on the "Refresh" temp_proc. * plug-ins/script-fu/scripts/*.scm: ported all scripts to use script-fu-menu-register and pass just the menu label in script-fu-register. Cleaned up all register calls to share a somewhat similar formatting.
174 lines
6.1 KiB
Scheme
174 lines
6.1 KiB
Scheme
; fade-outline.scm
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; version 1.1.11a
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;
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; This GIMP script_fu operates on a single Layer
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; It blends the outline boarder from one to another transparency level
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; by adding a layer_mask that follows the shape of the selection.
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; usually from 100% (white is full opaque) to 0% (black is full transparent)
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;
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; The user can specify the thickness of the fading border
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; that is used to blend from transparent to opaque
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; and the Fading direction (shrink or grow).
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;
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; The outline is taken from the current selection
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; or from the layers alpha channel if no selection is active.
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;
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; Optional you may keep the generated layermask or apply
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; it to the layer
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;
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; 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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; Define the main function:
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(define (script-fu-fade-outline inImage
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inLayer
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inBorderSize
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inFadeFrom
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inFadeTo
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inGrowingSelection
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inApplyMask
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inClearUnselected)
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(let* ((l-idx 0)
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(l-has-selection TRUE))
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(gimp-context-push)
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; check Fade from and To Values (and force values from 0% to 100%)
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(if (> inFadeFrom 100) (begin (set! inFadeFrom 100 )) )
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(if (< inFadeFrom 0) (begin (set! inFadeFrom 0 )) )
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(if (> inFadeTo 100) (begin (set! inFadeTo 100 )) )
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(if (< inFadeTo 0) (begin (set! inFadeTo 0 )) )
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(set! l-from-gray (* inFadeFrom 255))
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(set! l-to-gray (* inFadeTo 255))
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(set! l-step (/ (- l-from-gray l-to-gray) (+ inBorderSize 1)))
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(set! l-gray l-to-gray)
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; do nothing if the layer is a layer mask
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(if (= (car (gimp-drawable-is-layer-mask inLayer)) 0)
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(begin
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(gimp-image-undo-group-start inImage)
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; if the layer has no alpha add alpha channel
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(if (= (car (gimp-drawable-has-alpha inLayer)) FALSE)
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(begin
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(gimp-layer-add-alpha inLayer)))
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; if the layer is the floating selection convert to normal layer
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; because floating selection cant have a layer mask
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(if (> (car (gimp-layer-is-floating-sel inLayer)) 0)
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(begin
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(gimp-floating-sel-to-layer inLayer)))
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; if there is no selection we use the layers alpha channel
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(if (= (car (gimp-selection-is-empty inImage)) TRUE)
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(begin
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(set! l-has-selection FALSE)
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(gimp-selection-layer-alpha inLayer)))
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(gimp-selection-sharpen inImage)
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; apply the existing mask before creating a new one
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(gimp-layer-remove-mask inLayer 0)
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(if (= inClearUnselected TRUE)
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(begin
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(set! l-mask (car (gimp-layer-create-mask inLayer ADD-BLACK-MASK))))
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(begin
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(set! l-mask (car (gimp-layer-create-mask inLayer ADD-WHITE-MASK)))))
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(gimp-layer-add-mask inLayer l-mask)
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(if (= inGrowingSelection TRUE)
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(begin
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(set! l-gray l-from-gray)
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(set! l-from-gray l-to-gray)
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(set! l-to-gray l-gray)
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(set! l-step (/ (- l-from-gray l-to-gray) (+ inBorderSize 1)))
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(set! l-orig-selection (car (gimp-selection-save inImage)))
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(gimp-selection-invert inImage)))
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(while (<= l-idx inBorderSize)
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(if (= l-idx inBorderSize)
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(begin
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(set! l-gray l-from-gray)))
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(gimp-context-set-background (list (/ l-gray 100) (/ l-gray 100) (/ l-gray 100)))
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(gimp-edit-fill l-mask BACKGROUND-FILL)
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(set! l-idx (+ l-idx 1))
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(set! l-gray (+ l-gray l-step))
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(gimp-selection-shrink inImage 1)
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; check if selection has shrinked to none
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(if (= (car (gimp-selection-is-empty inImage)) TRUE)
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(begin
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(set! l-idx (+ inBorderSize 100)) ; break the while loop
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)))
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(if (= inGrowingSelection TRUE)
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(begin
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(gimp-selection-load l-orig-selection)
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(gimp-context-set-background (list (/ l-to-gray 100) (/ l-to-gray 100) (/ l-to-gray 100)))
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(gimp-edit-fill l-mask BACKGROUND-FILL)
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(gimp-selection-grow inImage inBorderSize)
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(gimp-selection-invert inImage)
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(if (= inClearUnselected TRUE)
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(begin
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;(gimp-context-set-background (list (/ l-from-gray 100) (/ l-from-gray 100) (/ l-from-gray 100)))
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(gimp-context-set-background (list 0 0 0)))
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(begin
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(gimp-context-set-background (list 255 255 255))))
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(gimp-edit-fill l-mask BACKGROUND-FILL)
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(gimp-image-remove-channel inImage l-orig-selection)))
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(if (= inApplyMask TRUE)
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(begin
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(gimp-layer-remove-mask inLayer 0)))
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(if (= l-has-selection FALSE)
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(gimp-selection-none inImage))
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(gimp-image-undo-group-end inImage)
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(gimp-displays-flush)))
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(gimp-context-pop)))
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(script-fu-register "script-fu-fade-outline"
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_"_Fade Outline..."
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"Blend the Layers outline border from one alpha value (opaque) to another (transparent) by generating a Layermask"
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"Wolfgang Hofer <hof@hotbot.com>"
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"Wolfgang Hofer"
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"10 Nov 1999"
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"RGB* GRAY*"
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SF-IMAGE "The image" 0
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SF-DRAWABLE "The layer" 0
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SF-ADJUSTMENT _"Border size" '(10 1 300 1 10 0 1)
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SF-ADJUSTMENT _"Fade from %" '(100 0 100 1 10 0 0)
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SF-ADJUSTMENT _"Fade to %" '(0 0 100 1 10 0 0)
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SF-TOGGLE _"Use growing selection" FALSE
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SF-TOGGLE _"Apply generated layermask" FALSE
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SF-TOGGLE _"Clear unselected maskarea" TRUE)
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(script-fu-menu-register "script-fu-fade-outline"
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_"<Image>/Script-Fu/Selection")
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