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ecf08f0621
dc4e6b1329; Update copyright years in more files64b3777631; Run set-copyright from admin.el8e1c56ae46; Add 2024 to copyright years # Conflicts: # doc/misc/modus-themes.org # doc/misc/texinfo.tex # etc/NEWS # etc/refcards/ru-refcard.tex # etc/themes/modus-operandi-theme.el # etc/themes/modus-themes.el # etc/themes/modus-vivendi-theme.el # lib/alloca.in.h # lib/binary-io.h # lib/c-ctype.h # lib/c-strcasecmp.c # lib/c-strncasecmp.c # lib/careadlinkat.c # lib/cloexec.c # lib/close-stream.c # lib/diffseq.h # lib/dup2.c # lib/filemode.h # lib/fpending.c # lib/fpending.h # lib/fsusage.c # lib/getgroups.c # lib/getloadavg.c # lib/gettext.h # lib/gettime.c # lib/gettimeofday.c # lib/group-member.c # lib/malloc.c # lib/md5-stream.c # lib/md5.c # lib/md5.h # lib/memmem.c # lib/memrchr.c # lib/nanosleep.c # lib/save-cwd.h # lib/sha1.c # lib/sig2str.c # lib/stdlib.in.h # lib/strtoimax.c # lib/strtol.c # lib/strtoll.c # lib/time_r.c # lib/xalloc-oversized.h # lisp/auth-source-pass.el # lisp/emacs-lisp/lisp-mnt.el # lisp/emacs-lisp/timer.el # lisp/info-look.el # lisp/jit-lock.el # lisp/loadhist.el # lisp/mail/rmail.el # lisp/net/ntlm.el # lisp/net/webjump.el # lisp/progmodes/asm-mode.el # lisp/progmodes/project.el # lisp/progmodes/sh-script.el # lisp/textmodes/flyspell.el # lisp/textmodes/reftex-toc.el # lisp/textmodes/reftex.el # lisp/textmodes/tex-mode.el # lisp/url/url-gw.el # m4/alloca.m4 # m4/clock_time.m4 # m4/d-type.m4 # m4/dirent_h.m4 # m4/dup2.m4 # m4/euidaccess.m4 # m4/fchmodat.m4 # m4/filemode.m4 # m4/fsusage.m4 # m4/getgroups.m4 # m4/getloadavg.m4 # m4/getrandom.m4 # m4/gettime.m4 # m4/gettimeofday.m4 # m4/gnulib-common.m4 # m4/group-member.m4 # m4/inttypes.m4 # m4/malloc.m4 # m4/manywarnings.m4 # m4/mempcpy.m4 # m4/memrchr.m4 # m4/mkostemp.m4 # m4/mktime.m4 # m4/nproc.m4 # m4/nstrftime.m4 # m4/pathmax.m4 # m4/pipe2.m4 # m4/pselect.m4 # m4/pthread_sigmask.m4 # m4/readlink.m4 # m4/realloc.m4 # m4/sig2str.m4 # m4/ssize_t.m4 # m4/stat-time.m4 # m4/stddef_h.m4 # m4/stdint.m4 # m4/stdio_h.m4 # m4/stdlib_h.m4 # m4/stpcpy.m4 # m4/strnlen.m4 # m4/strtoimax.m4 # m4/strtoll.m4 # m4/time_h.m4 # m4/timegm.m4 # m4/timer_time.m4 # m4/timespec.m4 # m4/unistd_h.m4 # m4/warnings.m4 # nt/configure.bat # nt/preprep.c # test/lisp/register-tests.el
436 lines
16 KiB
EmacsLisp
436 lines
16 KiB
EmacsLisp
;;; ps-bdf.el --- BDF font file handler for ps-print -*- lexical-binding: t; -*-
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;; Copyright (C) 1998-1999, 2001-2024 Free Software Foundation, Inc.
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;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
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;; 2008, 2009, 2010, 2011
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;; National Institute of Advanced Industrial Science and Technology (AIST)
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;; Registration Number H14PRO021
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;; Copyright (C) 2003
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;; National Institute of Advanced Industrial Science and Technology (AIST)
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;; Registration Number H13PRO009
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;; Author: Kenichi Handa <handa@gnu.org>
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;; (according to ack.texi)
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;; Keywords: text, BDF, font, PostScript
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;; Package: ps-print
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;; This file is part of GNU Emacs.
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;; GNU Emacs 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 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs 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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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Functions for getting bitmap information from X's BDF font file are
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;; provided.
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;;; Code:
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(require 'ps-mule)
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;;;###autoload
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(defcustom bdf-directory-list
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(if (memq system-type '(ms-dos windows-nt))
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(list (expand-file-name "fonts/bdf" installation-directory))
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'("/usr/local/share/emacs/fonts/bdf"))
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"List of directories to search for `BDF' font files.
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The default value is (\"/usr/local/share/emacs/fonts/bdf\")."
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:type '(repeat :tag "BDF font directory list"
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(directory :tag "BDF font directory"))
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:group 'ps-print-miscellany)
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;; MS-DOS and MS-Windows users like to move the binary around after
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;; it's built, but the value above is computed at load-up time.
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(and (memq system-type '(ms-dos windows-nt))
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(setq bdf-directory-list
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(list (expand-file-name "fonts/bdf" installation-directory))))
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(defun bdf-expand-file-name (bdfname)
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"Return an absolute path name of a `BDF' font file BDFNAME.
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It searches directories listed in the variable `bdf-directory-list'
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for BDFNAME."
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(if (file-name-absolute-p bdfname)
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(and (file-readable-p bdfname)
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bdfname)
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(catch 'tag
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(dolist (dir bdf-directory-list)
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(let ((absolute-path (expand-file-name bdfname dir)))
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(if (file-readable-p absolute-path)
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(throw 'tag absolute-path)))))))
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(defsubst bdf-file-mod-time (filename)
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"Return modification time of FILENAME.
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The value is a timestamp in the same format as `current-time'."
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(file-attribute-modification-time (file-attributes filename)))
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(defun bdf-file-newer-than-time (filename mod-time)
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"Return non-nil if and only if FILENAME is newer than MOD-TIME.
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MOD-TIME is a modification time in the same format as `current-time'."
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(let ((new-mod-time (bdf-file-mod-time filename)))
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(time-less-p mod-time new-mod-time)))
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(defun bdf-find-file (bdfname)
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"Return a buffer visiting a bdf file BDFNAME.
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BDFNAME must be an absolute file name.
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If BDFNAME doesn't exist, return nil."
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(and (file-readable-p bdfname)
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(let ((buf (generate-new-buffer " *bdf-work*"))
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(coding-system-for-read 'no-conversion))
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(with-current-buffer buf
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(insert-file-contents bdfname)
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buf))))
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(defvar bdf-cache-file (locate-user-emacs-file "bdfcache.el" ".bdfcache.el")
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"Name of cache file which contains information of `BDF' font files.")
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(defvar bdf-cache nil
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"Cached information of `BDF' font files. It is a list of FONT-INFO.
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FONT-INFO is a list of the following format:
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(ABSOLUTE-FILE-NAME MOD-TIME SIZE FONT-BOUNDING-BOX
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RELATIVE-COMPOSE BASELINE-OFFSET CODE-RANGE MAXLEN OFFSET-VECTOR)
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See the documentation of the function `bdf-read-font-info' for more detail.")
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(defun bdf-read-cache ()
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"Return a cached information about `BDF' font files from a cache file.
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The variable `bdf-cache-file' holds the cache file name.
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If the cache file is not readable, this return nil."
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(setq bdf-cache nil)
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(condition-case nil
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(and (file-readable-p bdf-cache-file)
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(progn
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(load-file bdf-cache-file)
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(if (listp bdf-cache)
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bdf-cache
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(setq bdf-cache nil))))
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(error nil)))
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(defun bdf-write-cache ()
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"Write out cached information of `BDF' font file to a file.
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The variable `bdf-cache-file' holds the cache file name.
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The file is written if and only if the file already exists and writable."
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(and bdf-cache
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(file-exists-p bdf-cache-file)
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(file-writable-p bdf-cache-file)
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(write-region (format "(setq bdf-cache '%S)\n" bdf-cache)
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nil bdf-cache-file)))
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(defun bdf-set-cache (font-info)
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"Cache FONT-INFO as information about one `BDF' font file.
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FONT-INFO is a list of the following format:
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(ABSOLUTE-FILE-NAME MOD-TIME SIZE FONT-BOUNDING-BOX
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RELATIVE-COMPOSE BASELINE-OFFSET CODE-RANGE MAXLEN OFFSET-VECTOR)
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See the documentation of the function `bdf-read-font-info' for more detail."
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(let ((slot (assoc (car font-info) bdf-cache)))
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(if slot
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(setcdr slot (cdr font-info))
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(setq bdf-cache (cons font-info bdf-cache)))))
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(defun bdf-initialize ()
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"Initialize `bdf' library."
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(and (bdf-read-cache)
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(add-hook 'kill-emacs-hook #'bdf-write-cache)))
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(defun bdf-compact-code (code code-range)
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(if (or (< code (aref code-range 4))
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(> code (aref code-range 5)))
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(setq code (aref code-range 6)))
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(+ (* (- (ash code -8) (aref code-range 0))
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(1+ (- (aref code-range 3) (aref code-range 2))))
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(- (logand code 255) (aref code-range 2))))
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(defun bdf-expand-code (code code-range)
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(let ((code0-range (1+ (- (aref code-range 3) (aref code-range 2)))))
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(+ (* (+ (/ code code0-range) (aref code-range 0)) 256)
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(+ (% code code0-range) (aref code-range 2)))))
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(defun bdf-search-and-read (match limit)
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(goto-char (point-min))
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(and (search-forward match limit t)
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(progn
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(goto-char (match-end 0))
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(read (current-buffer)))))
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(defun bdf-read-font-info (bdfname)
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"Read `BDF' font file BDFNAME and return information (FONT-INFO) of the file.
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BDFNAME must be an absolute file name.
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FONT-INFO is a list of the following format:
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(BDFFILE MOD-TIME FONT-BOUNDING-BOX
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RELATIVE-COMPOSE BASELINE-OFFSET CODE-RANGE MAXLEN OFFSET-VECTOR)
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MOD-TIME is last modification time in the same format as `current-time'.
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SIZE is a size of the font on 72 dpi device. This value is got
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from SIZE record of the font.
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FONT-BOUNDING-BOX is the font bounding box as a list of four integers,
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BBX-WIDTH, BBX-HEIGHT, BBX-XOFF, and BBX-YOFF.
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RELATIVE-COMPOSE is an integer value of the font's property
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`_MULE_RELATIVE_COMPOSE'. If the font doesn't have this property, the
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value is 0.
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BASELINE-OFFSET is an integer value of the font's property
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`_MULE_BASELINE_OFFSET'. If the font doesn't have this property, the
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value is 0.
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CODE-RANGE is a vector of minimum 1st byte, maximum 1st byte, minimum
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2nd byte, maximum 2nd byte, minimum code, maximum code, and default
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code. For 1-byte fonts, the first two elements are 0.
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MAXLEN is a maximum bytes of one glyph information in the font file.
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OFFSET-VECTOR is a vector of a file position which starts bitmap data
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of the glyph in the font file.
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Nth element of OFFSET-VECTOR is a file position for the glyph of code
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CODE, where N and CODE are in the following relation:
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(bdf-compact-code CODE) => N, (bdf-expand-code N) => CODE"
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(let* ((buf (bdf-find-file bdfname))
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(maxlen 0)
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(relative-compose 'false)
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(baseline-offset 0)
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size
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dpi
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font-bounding-box
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default-char
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code-range
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offset-vector)
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(if buf
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(message "Reading %s..." bdfname)
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(error "BDF file %s doesn't exist" bdfname))
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(unwind-protect
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(with-current-buffer buf
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(goto-char (point-min))
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(search-forward "\nFONTBOUNDINGBOX")
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(setq font-bounding-box
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(vector (read (current-buffer)) (read (current-buffer))
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(read (current-buffer)) (read (current-buffer))))
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;; The following kludgy code is to avoid bugs of fonts
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;; jiskan16.bdf and jiskan24.bdf distributed with X.
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;; They contain wrong FONTBOUNDINGBOX.
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(and (> (aref font-bounding-box 3) 0)
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(string-match "jiskan\\(16\\|24\\)" bdfname)
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(aset font-bounding-box 3
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(- (aref font-bounding-box 3))))
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(goto-char (point-min))
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(search-forward "\nFONT ")
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(if (looking-at "-[^-]*-[^-]*-[^-]*-[^-]*-[^-]*-[^-]*-\\([0-9]+\\)")
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(setq size (string-to-number (match-string 1)))
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(search-forward "\nSIZE ")
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(setq size (read (current-buffer)))
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;; The following kludgy code is to avoid bugs of several
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;; fonts which have wrong SIZE record.
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(and (string-match "jiskan" bdfname)
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(<= size (/ (aref font-bounding-box 1) 3))
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(setq size (aref font-bounding-box 1)))
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(setq dpi (read (current-buffer)))
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(if (and (> dpi 0) (/= dpi 72))
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(setq size (/ (* size dpi) 72))))
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(setq default-char (bdf-search-and-read "\nDEFAULT_CHAR" nil))
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(search-forward "\nSTARTCHAR")
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(forward-line -1)
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(let ((limit (point)))
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(setq relative-compose
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(or (bdf-search-and-read "\n_MULE_RELATIVE_COMPOSE" limit)
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'false)
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baseline-offset
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(or (bdf-search-and-read "\n_MULE_BASELINE_OFFSET" limit)
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0)))
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(let ((min-code0 256) (min-code1 256) (min-code 65536)
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(max-code0 0) (max-code1 0) (max-code 0)
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glyph glyph-list code0 code1 code offset)
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(while (search-forward "\nSTARTCHAR" nil t)
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(setq offset (line-beginning-position))
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(search-forward "\nENCODING")
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(setq code (read (current-buffer)))
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(if (< code 0)
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(search-forward "ENDCHAR")
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(setq code0 (ash code -8)
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code1 (logand code 255)
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min-code (min min-code code)
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max-code (max max-code code)
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min-code0 (min min-code0 code0)
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max-code0 (max max-code0 code0)
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min-code1 (min min-code1 code1)
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max-code1 (max max-code1 code1))
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(search-forward "ENDCHAR")
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(setq maxlen (max maxlen (- (point) offset))
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glyph-list (cons (cons code offset) glyph-list))))
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(setq code-range
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(vector min-code0 max-code0 min-code1 max-code1
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min-code max-code (or default-char min-code))
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offset-vector
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(make-vector (1+ (bdf-compact-code max-code code-range))
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nil))
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(while glyph-list
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(setq glyph (car glyph-list)
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glyph-list (cdr glyph-list))
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(aset offset-vector
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(bdf-compact-code (car glyph) code-range)
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(cdr glyph)))))
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(kill-buffer buf))
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(message "Reading %s...done" bdfname)
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(list bdfname (bdf-file-mod-time bdfname)
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size font-bounding-box relative-compose baseline-offset
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code-range maxlen offset-vector)))
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(defsubst bdf-info-absolute-path (font-info) (nth 0 font-info))
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(defsubst bdf-info-mod-time (font-info) (nth 1 font-info))
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(defsubst bdf-info-size (font-info) (nth 2 font-info))
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(defsubst bdf-info-font-bounding-box (font-info) (nth 3 font-info))
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(defsubst bdf-info-relative-compose (font-info) (nth 4 font-info))
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(defsubst bdf-info-baseline-offset (font-info) (nth 5 font-info))
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(defsubst bdf-info-code-range (font-info) (nth 6 font-info))
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(defsubst bdf-info-maxlen (font-info) (nth 7 font-info))
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(defsubst bdf-info-offset-vector (font-info) (nth 8 font-info))
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(defun bdf-get-font-info (bdfname)
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"Return information about `BDF' font file BDFNAME.
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BDFNAME must be an absolute file name.
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The value FONT-INFO is a list of the following format:
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(BDFNAME MOD-TIME SIZE FONT-BOUNDING-BOX
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RELATIVE-COMPOSE BASELINE-OFFSET CODE-RANGE MAXLEN OFFSET-VECTOR)
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See the documentation of the function `bdf-read-font-info' for more detail."
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(or bdf-cache
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(bdf-read-cache))
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(let ((font-info (assoc bdfname bdf-cache)))
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(if (or (not font-info)
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(not (file-readable-p bdfname))
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(bdf-file-newer-than-time bdfname (bdf-info-mod-time font-info)))
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(progn
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(setq font-info (bdf-read-font-info bdfname))
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(bdf-set-cache font-info)))
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font-info))
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(defun bdf-read-bitmap (bdfname offset maxlen relative-compose)
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"Read `BDF' font file BDFNAME to get bitmap data at file position OFFSET.
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BDFNAME is an absolute path name of the font file.
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MAXLEN specifies how many bytes we should read at least.
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The value is a list of DWIDTH, BBX, and BITMAP-STRING.
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DWIDTH is a pixel width of a glyph.
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BBX is a bounding box of the glyph.
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BITMAP-STRING is a string representing bits by hexadecimal digits."
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(let* ((coding-system-for-read 'no-conversion)
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(bbx (bdf-info-font-bounding-box (bdf-get-font-info bdfname)))
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(dwidth (elt bbx 0))
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(bitmap-string "")
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height yoff)
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(condition-case nil
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(with-temp-buffer
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(insert-file-contents bdfname nil offset (+ offset maxlen))
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(goto-char (point-min))
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(search-forward "\nDWIDTH")
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(setq dwidth (read (current-buffer)))
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(if (= dwidth 0)
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(setq dwidth 0.1))
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(goto-char (point-min))
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(search-forward "\nBBX")
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(setq bbx (vector (read (current-buffer)) (read (current-buffer))
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(read (current-buffer)) (read (current-buffer)))
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height (aref bbx 1)
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yoff (aref bbx 3))
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(search-forward "\nBITMAP")
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(forward-line 1)
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(delete-region (point-min) (point))
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(and (looking-at "\\(0+\n\\)+")
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(progn
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(setq height (- height (count-lines (point) (match-end 0))))
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(delete-region (point) (match-end 0))))
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(or (looking-at "ENDCHAR")
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(progn
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(search-forward "ENDCHAR" nil 'move)
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(forward-line -1)
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(while (looking-at "0+$")
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(setq yoff (1+ yoff)
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height (1- height))
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(forward-line -1))
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(forward-line 1)))
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(aset bbx 1 height)
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(aset bbx 3 yoff)
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(delete-region (point) (point-max))
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(goto-char (point-min))
|
|
(while (not (eobp))
|
|
(end-of-line)
|
|
(delete-char 1))
|
|
(setq bitmap-string (buffer-string)))
|
|
(error nil))
|
|
(vector dwidth (aref bbx 0) (aref bbx 1) (aref bbx 2) (aref bbx 3)
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|
(concat "<" bitmap-string ">")
|
|
(or relative-compose 'false))))
|
|
|
|
(defun bdf-get-bitmap (bdfname code)
|
|
"Return bitmap information of glyph of CODE in `BDF' font file BDFNAME.
|
|
CODE is an encoding number of glyph in the file.
|
|
The value is a list (DWIDTH BBX BITMAP-STRING).
|
|
DWIDTH is a pixel width of a glyph.
|
|
BBX is a bounding box of the glyph.
|
|
BITMAP-STRING is a string representing bits by hexadecimal digits."
|
|
(let* ((info (bdf-get-font-info bdfname))
|
|
(maxlen (bdf-info-maxlen info))
|
|
(code-range (bdf-info-code-range info))
|
|
(offset-vector (bdf-info-offset-vector info)))
|
|
(bdf-read-bitmap bdfname
|
|
(aref offset-vector (bdf-compact-code code code-range))
|
|
maxlen (bdf-info-relative-compose info))))
|
|
|
|
;;; Interface to ps-mule.el
|
|
|
|
;; Called from ps-mule-init-external-library.
|
|
(defun bdf-generate-prologue ()
|
|
(or bdf-cache
|
|
(bdf-initialize))
|
|
(ps-mule-generate-bitmap-prologue))
|
|
|
|
;; Called from ps-mule-check-font.
|
|
(defun bdf-check-font (font-spec)
|
|
(let ((font-name-list (ps-mule-font-spec-name font-spec)))
|
|
(ps-mule-font-spec-set-name
|
|
font-spec
|
|
(if (stringp font-name-list)
|
|
(bdf-expand-file-name font-name-list)
|
|
(catch 'tag
|
|
(dolist (font-name font-name-list)
|
|
(setq font-name (bdf-expand-file-name font-name))
|
|
(if font-name
|
|
(throw 'tag font-name))))))))
|
|
|
|
;; Called from ps-mule-generate-font.
|
|
(defun bdf-generate-font (font-spec)
|
|
(let ((info (bdf-get-font-info (ps-mule-font-spec-name font-spec))))
|
|
(ps-mule-font-spec-set-extra
|
|
font-spec (bdf-info-absolute-path info))
|
|
(ps-mule-generate-bitmap-font font-spec
|
|
(bdf-info-size info)
|
|
(bdf-info-relative-compose info)
|
|
(bdf-info-baseline-offset info)
|
|
(bdf-info-font-bounding-box info))))
|
|
|
|
;; Called from ps-mule-generate-glyph.
|
|
(defun bdf-generate-glyph (font-spec char)
|
|
(let ((font-name (ps-mule-font-spec-extra font-spec))
|
|
(code (ps-mule-encode-char char font-spec)))
|
|
(ps-mule-generate-bitmap-glyph font-spec char code
|
|
(bdf-get-bitmap font-name code))))
|
|
|
|
(provide 'ps-bdf)
|
|
|
|
;;; ps-bdf.el ends here
|