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|
;; bitmap.el -- bitmap file handler on MULE.
;; Copyright (C) 1992 Electrotechnical Laboratory, JAPAN.
;; Copyright (C) 1996,1997,1998 MORIOKA Tomohiko
;; Author: Ken'ichi HANDA <handa@etl.go.jp>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Keywords: bitmap, xbm, MULE
;; This file is part of BITMAP-MULE.
;; 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, 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;; Code:
;; Simple examples:
;; (bitmap-compose "00FF00FF00FF00FF00FF00FF00FF00FF")
;; (bitmap-compose
;; "FF00FF00FF00FF00FF00FF00FF00FF00AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA")
(require 'poe)
(require 'pcustom)
(defgroup bitmap-mule nil
"A package to use bitmap in Emacs/Mule.")
(defun read-hexa (str)
(let ((result 0) (i 0) (max (length str)))
(while (< i max)
(let ((ch (aref str i)))
(cond((and (<= ?0 ch) (<= ch ?9))
(setq result (+ (* result 16) (- ch ?0))))
((and (<= ?a ch) (<= ch ?f))
(setq result (+ (* result 16) (+ (- ch ?a) 10))))
((and (<= ?A ch) (<= ch ?F))
(setq result (+ (* result 16) (+ (- ch ?A) 10)))))
(setq i (1+ i))))
result))
(eval-and-compile
(cond ((and (fboundp 'set-buffer-multibyte)
(subrp (symbol-function 'set-buffer-multibyte)))
;; for Emacs 20.3 or later
(require 'bitmap-ci))
(t
;; for MULE 1.*, MULE 2.*, Emacs 20.1 and 20.2
(require 'bitmap-bi))))
(defun bitmap-make-string (length init)
"Return a new string of length LENGTH, with each element being INIT.
LENGTH must be an integer and INIT must be a string."
(let ((n length)
(s ""))
(while (> n 0)
(setq s (concat s init)
n (1- n)))
s))
;;; @ BDF
;;;
;; Internal variables -- declared here to reduce garbage collection.
(defconst *hex* (vector (make-string 96 0) (make-string 96 0)))
(defconst *hex-len* (length *hex*))
(defconst *cmp* (make-vector *hex-len* nil))
(defun bdf-to-bitmap (bdf)
"Set *cmp* a vector of string for BDF.
BDF is a vector of string, each elements corresponds to a line of bitmap
of difinition of a character glyph in bdf file."
(let ((width (length (aref bdf 0)))
(height (length bdf))
i j)
(if (or (/= (/ (+ height 15) 16) *hex-len*)
(/= width (length (aref *hex* 0))))
(progn
(setq *hex-len* (/ (+ height 15) 16))
(setq *hex* (make-vector *hex-len* nil))
(setq *cmp* (make-vector *hex-len* nil))
(setq i 0)
(while (< i *hex-len*)
(aset *hex* i (make-string 96 0))
(setq i (1+ i)))))
(setq j 0)
(while (< j width)
(setq i 0)
(while (< i (* *hex-len* 16))
(aset (aref *hex* (/ i 16))
(+ (* (/ j 2) 32) (* (% i 16) 2) (% j 2))
(if (< i height) (aref (aref bdf i) j) 0))
(setq i (1+ i)))
(setq j (1+ j)))
(setq i 0)
(while (< i *hex-len*)
(aset *cmp* i (bitmap-compose (aref *hex* i)))
(setq i (1+ i)))
*cmp*))
;;; @ XBM
;;;
(defun bitmap-decode-xbm (xbm)
(let ((hexa-string "0123456789ABCDEF")
(reverse-bit '[0 8 4 12 2 10 6 14 1 9 5 13 3 11 7 15])
w h i j i2 i2+2 bitmap cmp c temp line)
(setq w (car xbm)
xbm (cdr xbm)
h (car xbm)
xbm (cdr xbm))
(setq bitmap (make-vector h 0))
(setq cmp (make-vector (/ (+ h 15) 16) nil))
(setq w (/ (+ w 7) 8))
(setq j 0)
(while (< j h)
(setq i 0
line (car xbm)
i2 0
i2+2 2)
(aset bitmap j (make-vector w 0))
(while (< i w)
(setq temp (substring line i2 i2+2))
(aset (aref bitmap j) i temp)
(setq c (read-hexa temp))
(aset temp 0 (aref hexa-string (aref reverse-bit (% c 16))))
(aset temp 1 (aref hexa-string (aref reverse-bit (/ c 16))))
(setq i (1+ i)
i2 i2+2
i2+2 (+ i2+2 2)))
(setq j (1+ j)
xbm (cdr xbm)))
(setq i 0)
(while (< i w)
(setq j 0)
(while (< j h)
(aset cmp (/ j 16)
(concat (aref cmp (/ j 16))
(aref (aref bitmap j) i)))
(setq j (1+ j)))
(if (> (% h 16) 0)
(aset cmp (/ h 16)
(concat (aref cmp (/ h 16))
(make-string (* (- 16 (% h 16)) 2) ?0))))
(setq i (1+ i)))
cmp))
(defun bitmap-read-xbm-buffer (buf)
(save-excursion
(let (width height dest)
(save-excursion
(set-buffer buf)
(goto-char (point-min))
(search-forward "width ")
(setq width (read (current-buffer)))
(goto-char (point-min))
(search-forward "height ")
(setq height (read (current-buffer)))
(let ((w (/ (+ width 7) 8))
i (j 0)
line)
(while (< j height)
(setq i 0
line "")
(while (< i w)
(search-forward "0x")
(setq line
(concat line (buffer-substring (point) (+ (point) 2))))
(setq i (1+ i))
)
(setq dest (cons line dest)
j (1+ j))))
(cons width (cons height (nreverse dest)))))))
(defun bitmap-read-xbm-file (file)
(bitmap-read-xbm-buffer (find-file-noselect (expand-file-name file))))
(defun bitmap-insert-xbm-buffer (buffer)
"Insert xbm bitmap from BUFFER. Very slow! [bitmap.el]"
(let* ((cmp (bitmap-decode-xbm (bitmap-read-xbm-buffer buffer)))
(len (length cmp))
(i 0))
(while (< i len)
(insert (bitmap-compose (aref cmp i)) ?\n)
(setq i (1+ i)))))
(defun bitmap-insert-xbm-file (file &optional no-kill)
"Insert xbm bitmap from FILE. Very slow! [bitmap.el]"
(interactive "fxbm file: ")
(let ((buf (find-file-noselect (expand-file-name file))))
(bitmap-insert-xbm-buffer buf)
(or no-kill
(kill-buffer buf))))
;;; @ utilities
;;;
(autoload 'progress-feedback-with-label "bm-utils")
(autoload 'lprogress-display "bm-utils")
(make-obsolete 'lprogress-display 'progress-feedback-with-label)
;;; @ end
;;;
(provide 'bitmap)
;;; bitmap.el ends here
|
