; The GIMP -- an image manipulation program
; Copyright (C) 1995 Spencer Kimball and Peter Mattis
;
; Make-Brush - a script for the script-fu program
; by Seth Burgess 1997 <sjburges@ou.edu>
;
; 18-Dec-2000 fixed to work with the new convention (not inverted) of
;             gbr saver (jtl@gimp.org)
;
; 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-make-brush-rectangular name width height spacing )
  (let* ((img (car (gimp-image-new width height GRAY)))
	 (drawable (car (gimp-layer-new img
					width height GRAY-IMAGE
					"MakeBrush" 100 NORMAL-MODE)))

	 (filename (string-append gimp-directory
				  "/brushes/r"
				  (number->string width)
				  "x"
				  (number->string height)
				  ".gbr")))

    (gimp-context-push)

    (gimp-image-undo-disable img)
    (gimp-image-add-layer img drawable 0)

    (gimp-context-set-background '(255 255 255))
    (gimp-drawable-fill drawable BACKGROUND-FILL)

    (gimp-rect-select img 0 0 width height CHANNEL-OP-REPLACE FALSE 0)
    
    (gimp-context-set-background '(0 0 0))
    (gimp-edit-fill drawable BACKGROUND-FILL)

    (file-gbr-save 1 img drawable filename "" spacing name)
    (gimp-image-delete img)

    (gimp-context-pop)

    (gimp-brushes-refresh)
    (gimp-context-set-brush name)))

(script-fu-register "script-fu-make-brush-rectangular"
		    _"_Rectangular..."
		    "Create size of brush"
		    "Seth Burgess <sjburges@ou.edu>"
		    "Seth Burgess"
		    "1997"
		    ""
		    SF-STRING     _"Name"    "Rectangle"
		    SF-ADJUSTMENT _"Width"   '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Height"  '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Spacing" '(25 1 100 1 10 1 0))

(script-fu-menu-register "script-fu-make-brush-rectangular"
			 _"<Toolbox>/Xtns/Script-Fu/Make Brush")


(define (script-fu-make-brush-rectangular-feathered name width height
						    feathering spacing)
  (let* ((widthplus (+ width feathering))
	 (heightplus (+ height feathering))
	 (img (car (gimp-image-new widthplus heightplus GRAY)))
	 (drawable (car (gimp-layer-new img
					widthplus heightplus GRAY-IMAGE
					"MakeBrush" 100 NORMAL-MODE)))

	 (filename (string-append gimp-directory
				  "/brushes/r"
				  (number->string width)
				  "x"
				  (number->string height)
				  "f"
				  (number->string feathering)
				  ".gbr")))

    (gimp-context-push)

    (gimp-image-undo-disable img)
    (gimp-image-add-layer img drawable 0)

    (gimp-context-set-background '(255 255 255))
    (gimp-drawable-fill drawable BACKGROUND-FILL)

    (cond ((< 0 feathering)
	   (gimp-rect-select img
			     (/ feathering 2) (/ feathering 2)
			     width height CHANNEL-OP-REPLACE TRUE feathering))
	  ((>= 0 feathering)
	   (gimp-rect-select img 0 0 width height CHANNEL-OP-REPLACE FALSE 0)))

    (gimp-context-set-background '(0 0 0))
    (gimp-edit-fill drawable BACKGROUND-FILL)

    (file-gbr-save 1 img drawable filename "" spacing name)
    (gimp-image-delete img)

    (gimp-context-pop)

    (gimp-brushes-refresh)
    (gimp-context-set-brush name)))

(script-fu-register "script-fu-make-brush-rectangular-feathered"
		    _"Re_ctangular, Feathered..."
		    "Create size of brush"
		    "Seth Burgess <sjburges@ou.edu>"
		    "Seth Burgess"
		    "1997"
		    ""
		    SF-STRING     _"Name"       "Rectangle"
		    SF-ADJUSTMENT _"Width"      '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Height"     '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Feathering" '(4 1 100 1 10 0 1)
		    SF-ADJUSTMENT _"Spacing"    '(25 1 100 1 10 1 0))

(script-fu-menu-register "script-fu-make-brush-rectangular-feathered"
			 _"<Toolbox>/Xtns/Script-Fu/Make Brush")


(define (script-fu-make-brush-elliptical name width height spacing)
  (let* ((img (car (gimp-image-new width height GRAY)))
	 (drawable (car (gimp-layer-new img
					width height GRAY-IMAGE
					"MakeBrush" 100 NORMAL-MODE)))

	 (filename (string-append gimp-directory
				  "/brushes/e"
				  (number->string width)
				  "x"
				  (number->string height)
				  ".gbr")))

    (gimp-context-push)

    (gimp-image-undo-disable img)
    (gimp-image-add-layer img drawable 0)

    (gimp-context-set-background '(255 255 255))
    (gimp-drawable-fill drawable BACKGROUND-FILL)
    (gimp-context-set-background '(0 0 0))
    (gimp-ellipse-select img 0 0 width height CHANNEL-OP-REPLACE TRUE FALSE 0)
    
    (gimp-edit-fill drawable BACKGROUND-FILL)

    (file-gbr-save 1 img drawable filename "" spacing name)
    (gimp-image-delete img)

    (gimp-context-pop)

    (gimp-brushes-refresh)
    (gimp-context-set-brush name)))

(script-fu-register "script-fu-make-brush-elliptical"
		    _"_Elliptical..."
		    "Create size of brush"
		    "Seth Burgess <sjburges@ou.edu>"
		    "Seth Burgess"
		    "1997"
		    ""
		    SF-STRING     _"Name"    "Ellipse"
		    SF-ADJUSTMENT _"Width"   '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Height"  '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Spacing" '(25 1 100 1 10 1 0))

(script-fu-menu-register "script-fu-make-brush-elliptical"
			 _"<Toolbox>/Xtns/Script-Fu/Make Brush")


(define (script-fu-make-brush-elliptical-feathered name width height
						   feathering spacing)
  (let* ((widthplus (+ feathering width)) ; add 3 for blurring
	 (heightplus (+ feathering height))
	 (img (car (gimp-image-new widthplus heightplus GRAY)))
	 (drawable (car (gimp-layer-new img
					widthplus heightplus GRAY-IMAGE
					"MakeBrush" 100 NORMAL-MODE)))

	 (filename (string-append gimp-directory
				  "/brushes/e"
				  (number->string width)
				  "x"
				  (number->string height)
				  "f"
				  (number->string feathering)
				  ".gbr")))

    (gimp-context-push)

    (gimp-image-undo-disable img)
    (gimp-image-add-layer img drawable 0)

    (gimp-context-set-background '(255 255 255))
    (gimp-drawable-fill drawable BACKGROUND-FILL)

    (cond ((> feathering 0)   ; keep from taking out gimp with stupid entry. 
        (gimp-ellipse-select img
			     (/ feathering 2) (/ feathering 2)
			     width height CHANNEL-OP-REPLACE
			     TRUE TRUE feathering))
          ((<= feathering 0)
        (gimp-ellipse-select img 0 0 width height
			     CHANNEL-OP-REPLACE TRUE FALSE 0)))

    (gimp-context-set-background '(0 0 0))
    (gimp-edit-fill drawable BACKGROUND-FILL)

    (file-gbr-save 1 img drawable filename "" spacing name)
    (gimp-image-delete img)

    (gimp-context-pop)
    
    (gimp-brushes-refresh)
    (gimp-context-set-brush name)))

(script-fu-register "script-fu-make-brush-elliptical-feathered"
		    _"Elli_ptical, Feathered..."
		    "Makes a feathered elliptical brush of specified size"
		    "Seth Burgess <sjburges@ou.edu>"
		    "Seth Burgess"
		    "1997"
		    ""
		    SF-STRING     _"Name"       "Ellipse"
		    SF-ADJUSTMENT _"Width"      '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Height"     '(20 1 200 1 10 0 1)
		    SF-ADJUSTMENT _"Feathering" '(4 1 100 1 10 0 1)
		    SF-ADJUSTMENT _"Spacing"    '(25 1 100 1 10 1 0))

(script-fu-menu-register "script-fu-make-brush-elliptical-feathered"
			 _"<Toolbox>/Xtns/Script-Fu/Make Brush")
