; Chris Gutteridge / ECS Dept. University of Southampton, England
; "ASCII 2 Image" script for the Gimp.
;
; 8th April 1998
; 
; Takes a filename of an ASCII file and converts it to a gimp image.
; Does sensible things to preserve indents (gimp-text strips them)
;
; cjg@ecs.soton.ac.uk

; 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 the function:

(define (script-fu-asc-2-img inFile
			     inFont
			     inFontSize
			     inTextColor
                             inTrans
                             inBackColor
			     inBufferAmount)
	
  (set! old-bg (car (gimp-palette-get-background)))

  (set! theImage (car (gimp-image-new 10 10 RGB) ) )
  
  (set! theLayer (car (gimp-layer-new theImage
				      10
				      10
				      RGBA_IMAGE
				      "layer 1"
				      100
				      NORMAL) ) )

  (gimp-palette-set-background inBackColor)
  (gimp-layer-set-name theLayer "Background")
  (gimp-image-add-layer theImage theLayer 0)

  (script-fu-asc-2-img-layer theImage theLayer inFile inFont inFontSize
			     inTextColor inBufferAmount)
  
  (set! theBuffer (* inFontSize (/ inBufferAmount 100) ) )
  (set! theImageWidth (+ theImageWidth theBuffer theBuffer ))
  (set! theImageHeight (+ theImageHeight theBuffer theBuffer ))
  
  (gimp-image-resize theImage
		     theImageWidth
		     theImageHeight
		     theBuffer
		     theBuffer)
  (gimp-layer-resize theLayer
		     theImageWidth
		     theImageHeight
		     theBuffer
		     theBuffer)
  (gimp-selection-all theImage)
  (if (= inTrans TRUE)
      (gimp-edit-clear theLayer)
      (gimp-edit-fill theLayer BG-IMAGE-FILL)
      )
  (gimp-selection-none theImage)
  
  (gimp-palette-set-background old-bg)
  (gimp-display-new theImage)
  
  (gimp-image-clean-all theImage)
  
  (gimp-displays-flush)
  (cons theImage  ()   )
)

(define (script-fu-asc-2-img-layer inImage
				   inLayer
				   inFile
			           inFont
			           inFontSize
				   inTextColor)
  
  (set! old-fg (car (gimp-palette-get-foreground)))
  (set! theImage inImage)
  (set! theLayer inLayer)
  (set! theFile (fopen inFile))
  
  (set! otherLayers (cadr (gimp-image-get-layers theImage)))
  (set! nLayers (car (gimp-image-get-layers theImage)))
  (set! n nLayers)
  
  (gimp-palette-set-foreground inTextColor)
  (gimp-selection-none theImage)
  (set! theData ())
  (set! theIndentList ())
  (set! theChar "X")
  (while (not (equal? () theChar))
	 (set! allspaces TRUE)
	 (set! theIndent 0)
	 (set! theLine "")
	 (while 	(begin 	(set! theChar (fread 1 theFile))
				(and 	(not (equal? "\n" theChar))
					(not (equal? () theChar))
					)
				)
			(cond 	(	(equal? theChar "\t")
					(set! theChar "        ")
					(if (= allspaces TRUE)
					    (set! theIndent (+ theIndent 8))
					    ())
					)
				(	(equal? theChar " ")
					(if (= allspaces TRUE)
					    (set! theIndent (+ theIndent 1))
					    ())
					)
				(TRUE (set! allspaces FALSE))
				)
			(set! theLine (string-append theLine theChar))
			)
	 (if 	(= allspaces TRUE)
		(set! theLine "")
		()
		)
	 (if 	(and 	(equal? () theChar)
			(equal? "" theLine)
			)
		()
		(begin 	(set! theData (cons theLine theData))
			(set! theIndentList
			      (cons theIndent theIndentList))
			)
		)
	 )
  
  (set! theText (car (gimp-text-fontname theImage
					 -1
					 0
					 0
					 "X"
					 0
					 TRUE
					 inFontSize
					 PIXELS
					 inFont)))
  (set! theCharWidth (car (gimp-drawable-width  theText) ))
  (gimp-edit-cut theText)
  
  (set! theImageHeight 0)
  (set! theImageWidth 0)
  (cjg-add-text (reverse theData)
		(reverse theIndentList)
		inFont
		inFontSize)
  (set! n nLayers)
  (gimp-palette-set-foreground old-fg)
  (gimp-displays-flush)
  )

(define (cjg-add-text inData inIndentList inFont inFontSize)
  (if 	(equal? () inData)
	()
	(let 	((theLine (car inData)) (theIndent (car inIndentList)))
	  (if 	(equal? "" theLine)
		()
		(begin
		  (set! theText (car (gimp-text-fontname theImage
							 -1
							 0
							 0
							 (string-append
							  " " theLine)
							 0
							 TRUE
							 inFontSize
							 PIXELS
							 inFont)))
		  (set! theLineHeight (car (gimp-drawable-height  theText) ) )
		  (gimp-layer-set-offsets theText
					  (* theCharWidth theIndent)
					  (+ theImageHeight
					     (- inFontSize theLineHeight)))
		  (set! theImageWidth (max
				       (+ (car (gimp-drawable-width  theText) )
					  (* theCharWidth theIndent))
				       theImageWidth ))
		  (if (= (car (gimp-layer-is-floating-sel theText)) TRUE)
                      (gimp-floating-sel-anchor theText)
		      ()
		      )
                  (gimp-layer-set-name theText theLine)
		  )
		)
	  (set! theImageHeight
		(+ theImageHeight inFontSize))
	  (cjg-add-text (cdr inData) (cdr inIndentList) inFont inFontSize)))
  )

; Register the function with the GIMP:

(script-fu-register
 "script-fu-asc-2-img"
 _"<Toolbox>/Xtns/Script-Fu/Utils/ASCII to Image..."
 "Create a new image containing text from a simple text file"
 "Chris Gutteridge: cjg@ecs.soton.ac.uk"
 "8th April 1998"
 "Chris Gutteridge / ECS @ University of Southampton, England"
 ""
 SF-FILENAME   _"Filename"               "afile"
 SF-FONT       _"Font"                   "Bitstream Charter"
 SF-ADJUSTMENT _"Font Size (pixels)"     '(45 2 1000 1 10 0 1)
 SF-COLOR      _"Text Color"             '(0 0 0)
 SF-TOGGLE     _"Transparent Background" FALSE
 SF-COLOR      _"Background Color"       '(255 255 255)
 SF-ADJUSTMENT _"Buffer Amount (% Height of Text)" '(35 0 100 1 10 0 0)
)

(script-fu-register
 "script-fu-asc-2-img-layer"
 _"<Image>/Script-Fu/Utils/ASCII to Image Layer..."
 "Create a new layer of text from a simple text file"
 "Chris Gutteridge: cjg@ecs.soton.ac.uk"
 "30th April 1998"
 "Chris Gutteridge / ECS @ University of Southampton, England"
 "*"
 SF-IMAGE "Image" 0
 SF-DRAWABLE "Layer" 0
 SF-FILENAME _"Filename"             "afile"
 SF-FONT     _"Font"                 "Bitstream Charter"
 SF-ADJUSTMENT _"Font Size (pixels)" '(45 2 1000 1 10 0 1)
 SF-COLOR    _"Text Color"           '(0 0 0)
)