gimp/plug-ins/script-fu/scripts/select-to-pattern.scm

; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
; 
; Based on select-to-brush by
; 	Copyright (c) 1997 Adrian Likins aklikins@eos.ncsu.edu
; Author Cameron Gregory, http://www.flamingtext.com/
;
; Takes the current selection, saves it as a pattern and makes it the active
; pattern
;
; This program is free software; you can redistribute it and/or modify
; it under the terms of the GNU General Public License as published by
; the Free Software Foundation; either version 2 of the License, or
; (at your option) any later version.
; 
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
; GNU General Public License for more details.
; 
; You should have received a copy of the GNU General Public License
; along with this program; if not, write to the Free Software
; Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.


(define (script-fu-selection-to-pattern image drawable desc filename)

  (if (= (car (gimp-selection-is-empty image)) TRUE)
      (begin
	(set! selection-width (car (gimp-drawable-width drawable)))
	(set! selection-height (car (gimp-drawable-height drawable))))
      (begin
	(set! selection-bounds (gimp-drawable-mask-bounds drawable))
	(set! select-offset-x (cadr selection-bounds))
	(set! select-offset-y (caddr selection-bounds))
	(set! selection-width (- (cadr (cddr selection-bounds)) select-offset-x))
	(set! selection-height (- (caddr (cddr selection-bounds)) select-offset-y))))

  (if (= (car (gimp-drawable-has-alpha drawable)) TRUE)
      (set! pattern-draw-type RGBA-IMAGE)
      (set! pattern-draw-type RGB-IMAGE))

  (set! pattern-image-type RGB)

  (set! pattern-image (car (gimp-image-new selection-width selection-height
					   pattern-image-type)))

  (set! pattern-draw
	(car (gimp-layer-new pattern-image selection-width selection-height
			     pattern-draw-type "Pattern" 100 NORMAL-MODE)))

  (gimp-drawable-fill pattern-draw TRANSPARENT-FILL)

  (gimp-image-add-layer pattern-image pattern-draw 0)

  (gimp-edit-copy drawable)

  (let ((floating-sel (car (gimp-edit-paste pattern-draw FALSE))))
    (gimp-floating-sel-anchor floating-sel))

  (set! filename2 (string-append gimp-directory
				 "/patterns/"
				 filename
				 (number->string image)
				 ".pat"))

  (file-pat-save 1 pattern-image pattern-draw filename2 "" desc)
  (gimp-patterns-refresh)
  (gimp-context-set-pattern desc)

  (gimp-image-delete pattern-image)
  (gimp-displays-flush))

(script-fu-register "script-fu-selection-to-pattern"
		    _"To _Pattern..."
		    "Convert a selection to a pattern"
		    "Cameron Gregory <cameron@bloke.com>"
		    "Cameron Gregory"
		    "09/02/2003"
		    "RGB* GRAY*"
		    SF-IMAGE    "Image"         0
		    SF-DRAWABLE "Drawable"      0
		    SF-STRING   _"Pattern name" "My Pattern"
		    SF-STRING   _"Filename"     "mypattern")

(script-fu-menu-register "script-fu-selection-to-pattern"
			 "<Image>/Filters/Selection")