-\f
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; For handling multibyte characters.
-;;
-;; The following comments apply only to this part (through the next ^L).
-;; Author: Kenichi Handa <handa@etl.go.jp>
-;; Maintainer: Kenichi Handa <handa@etl.go.jp>
-
-(eval-and-compile
- (if (fboundp 'set-buffer-multibyte)
- (progn
- (defalias 'ps-mule-next-point '1+)
- (defalias 'ps-mule-chars-in-string 'length)
- (defalias 'ps-mule-string-char 'aref)
- (defsubst ps-mule-next-index (str i) (1+ i)))
- (defun set-buffer-multibyte (arg)
- (setq enable-multibyte-characters arg))
- (defun string-as-unibyte (arg) arg)
- (defun string-as-multibyte (arg) arg)
- (defun charset-after (&optional arg)
- (char-charset (char-after arg)))
- (defun ps-mule-next-point (arg)
- (save-excursion (goto-char arg) (forward-char 1) (point)))
- (defun ps-mule-chars-in-string (string)
- (length string))
- (defalias 'ps-mule-string-char 'aref)
- (defun ps-mule-next-index (str i)
- (1+ i)))
- )
-
-(defvar ps-mule-font-info-database
- '((latin-iso8859-1
- (normal nil nil iso-latin-1)))
- "Alist of charsets vs the corresponding font information.
-Each element has the form:
- (CHARSET (FONT-TYPE FONT-SRC FONT-NAME ENCODING BYTES) ...)
-where
-
-CHARSET is a charset (symbol) for this font family,
-
-FONT-TYPE is a type of font: normal, bold, italic, or bold-italic.
-
-FONT-SRC is a source of font: builtin, bdf, vflib, or nil.
-
- If FONT-SRC is builtin, FONT-NAME is a buitin PostScript font name.
-
- If FONT-SRC is bdf, FONT-NAME is a BDF font file name. To use this
- font, the external library `bdf' is required.
-
- If FONT-SRC is vflib, FONT-NAME is name of font VFlib knows. To use
- this font, the external library `vflib' is required.
-
- If FONT-SRC is nil, a proper ASCII font in the variable
- `ps-font-info-database' is used. This is useful for Latin-1
- characters.
-
-ENCODING is a coding system to encode a string of characters of
-CHARSET into a proper string matching an encoding of the specified
-font. ENCODING may be a function to call to do this encoding. In
-this case, the function is called with one arguemnt, the string to
-encode, and it should return an encoded string.
-
-BYTES specifies how many bytes in encoded byte sequence construct esch
-character, it should be 1 or 2.
-
-All multibyte characters are printed by fonts specified in this
-database regardless of a font family of ASCII characters. The
-exception is Latin-1 characters which are printed by the same font as
-ASCII characters, thus obey font family.
-
-See also the variable `ps-font-info-database'.")
-
-(defconst ps-mule-font-info-database-ps
- '((katakana-jisx0201
- (normal builtin "Ryumin-Light.Katakana" ps-mule-encode-7bit 1)
- (bold builtin "GothicBBB-Medium.Katakana" ps-mule-encode-7bit 1)
- (bold-italic builtin "GothicBBB-Medium.Katakana" ps-mule-encode-7bit 1))
- (latin-jisx0201
- (normat builtin "Ryumin-Light.Hankaku" ps-mule-encode-7bit 1)
- (bold builtin "GothicBBB-Medium.Hankaku" ps-mule-encode-7bit 1))
- (japanese-jisx0208
- (normal builtin "Ryumin-Light-H" ps-mule-encode-7bit 2)
- (bold builtin "GothicBBB-Medium-H" ps-mule-encode-7bit 2))
- (korean-ksc5601
- (normal builtin "Batang-Medium-KSC-H" ps-mule-encode-7bit 2)
- (bold builtin " Gulim-Medium-KSC-H" ps-mule-encode-7bit 2))
- )
- "Sample setting of the `ps-mule-font-info-database' to use builtin PS font.
-
-Currently, data for Japanese and Korean PostScript printers are listed.")
-
-(defconst ps-mule-font-info-database-bdf
- '((ascii
- (normal bdf "etl24-latin1.bdf" nil 1)
- (bold bdf "etl16b-latin1.bdf" iso-latin-1 1)
- (italic bdf "etl16i-latin1.bdf" iso-latin-1 1)
- (bold-italic bdf "etl16bi-latin1.bdf" iso-latin-1 1))
- (latin-iso8859-1
- (normal bdf "etl24-latin1.bdf" iso-latin-1 1)
- (bold bdf "etl16b-latin1.bdf" iso-latin-1 1)
- (italic bdf "etl16i-latin1.bdf" iso-latin-1 1)
- (bold-italic bdf "etl16bi-latin1.bdf" iso-latin-1 1))
- (latin-iso8859-2
- (normal bdf "etl24-latin2.bdf" iso-latin-2 1))
- (latin-iso8859-3
- (normal bdf "etl24-latin3.bdf" iso-latin-3 1))
- (latin-iso8859-4
- (normal bdf "etl24-latin4.bdf" iso-latin-4 1))
- (thai-tis620
- (normal bdf "thai-24.bdf" thai-tis620 1))
- (greek-iso8859-7
- (normal bdf "etl24-greek.bdf" greek-iso-8bit 1))
- ;; (arabic-iso8859-6 nil) ; not yet available
- (hebrew-iso8859-8
- (normal bdf "etl24-hebrew.bdf" hebrew-iso-8bit 1))
- (katakana-jisx0201
- (normal bdf "12x24rk.bdf" ps-mule-encode-8bit 1))
- (latin-jisx0201
- (normal bdf "12x24rk.bdf" ps-mule-encode-7bit 1))
- (cyrillic-iso8859-5
- (normal bdf "etl24-cyrillic.bdf" cyrillic-iso-8bit 1))
- (latin-iso8859-9
- (normal bdf "etl24-latin5.bdf" iso-latin-5 1))
- (japanese-jisx0208-1978
- (normal bdf "jiskan24.bdf" ps-mule-encode-7bit 2))
- (chinese-gb2312
- (normal bdf "gb24st.bdf" ps-mule-encode-7bit 2))
- (japanese-jisx0208
- (normal bdf "jiskan24.bdf" ps-mule-encode-7bit 2))
- (korean-ksc5601
- (normal bdf "hanglm24.bdf" ps-mule-encode-7bit 2))
- (japanese-jisx0212
- (normal bdf "jisksp40.bdf" ps-mule-encode-7bit 2))
- (chinese-cns11643-1
- (normal bdf "cns-1-40.bdf" ps-mule-encode-7bit 2))
- (chinese-cns11643-2
- (normal bdf "cns-2-40.bdf" ps-mule-encode-7bit 2))
- (chinese-big5-1
- (normal bdf "taipei24.bdf" chinese-big5 2))
- (chinese-big5-2
- (normal bdf "taipei24.bdf" chinese-big5 2))
- (chinese-sisheng
- (normal bdf "etl24-sisheng.bdf" ps-mule-encode-8bit 1))
- (ipa
- (normal bdf "etl24-ipa.bdf" ps-mule-encode-8bit 1))
- (vietnamese-viscii-lower
- (normal bdf "etl24-viscii.bdf" vietnamese-viscii 1))
- (vietnamese-viscii-upper
- (normal bdf "etl24-viscii.bdf" vietnamese-viscii 1))
- (arabic-digit
- (normal bdf "etl24-arabic0.bdf" ps-mule-encode-7bit 1))
- (arabic-1-column
- (normal bdf "etl24-arabic1.bdf" ps-mule-encode-7bit 1))
- ;; (ascii-right-to-left nil) ; not yet available
- (lao
- (normal bdf "mule-lao-24.bdf" lao 1))
- (arabic-2-column
- (normal bdf "etl24-arabic2.bdf" ps-mule-encode-7bit 1))
- (indian-is13194
- (normal bdf "mule-iscii-24.bdf" ps-mule-encode-7bit 1))
- (indian-1-column
- (normal bdf "mule-indian-1col-24.bdf" ps-mule-encode-7bit 2))
- (tibetan-1-column
- (normal bdf "mule-tibmdx-1col-24.bdf" ps-mule-encode-7bit 2))
- (ethiopic
- (normal bdf "ethiomx24f-uni.bdf" ps-mule-encode-ethiopic 2))
- (chinese-cns11643-3
- (normal bdf "cns-3-40.bdf" ps-mule-encode-7bit 2))
- (chinese-cns11643-4
- (normal bdf "cns-4-40.bdf" ps-mule-encode-7bit 2))
- (chinese-cns11643-5
- (normal bdf "cns-5-40.bdf" ps-mule-encode-7bit 2))
- (chinese-cns11643-6
- (normal bdf "cns-6-40.bdf" ps-mule-encode-7bit 2))
- (chinese-cns11643-7
- (normal bdf "cns-7-40.bdf" ps-mule-encode-7bit 2))
- (indian-2-column
- (normal bdf "mule-indian-24.bdf" ps-mule-encode-7bit 2))
- (tibetan
- (normal bdf "mule-tibmdx-24.bdf" ps-mule-encode-7bit 2)))
- "Sample setting of the `ps-mule-font-info-database' to use BDF fonts.
-BDF (Bitmap Distribution Format) is a format used for distributing
-X's font source file.
-
-Current default value lists BDF fonts included in `intlfonts-1.1'
-which is a collection of X11 fonts for all characters supported by
-Emacs.
-
-With the default value, all characters including ASCII and Latin-1 are
-printed by BDF fonts. See also `ps-mule-font-info-database-ps-bdf'.")
-
-(defconst ps-mule-font-info-database-ps-bdf
- (cons '(latin-iso8859-1
- (normal nil nil iso-latin-1))
- (cdr (cdr ps-mule-font-info-database-bdf)))
- "Sample setting of the `ps-mule-font-info-database to use BDF fonts.
-
-Current default value lists BDF fonts included in `intlfonts-1.1'
-which is a collection of X11 fonts for all characters supported by
-Emacs.
-
-With the default value, all characters except for ASCII and Latin-1 are
-printed by BDF fonts. ASCII and Latin-1 charcaters are printed by
-PostScript font specified by `ps-font-family'.
-
-See also `ps-mule-font-info-database-bdf'.")
-
-;; Two typical encoding functions for PostScript fonts.
-
-(defun ps-mule-encode-7bit (string)
- (let* ((dim (charset-dimension
- (char-charset (ps-mule-string-char string 0))))
- (len (* (ps-mule-chars-in-string string) dim))
- (str (make-string len 0))
- (i 0) (j 0))
- (if (= dim 1)
- (while (< j len)
- (aset str j (nth 1 (split-char (ps-mule-string-char string i))))
- (setq i (ps-mule-next-index string i)
- j (1+ j)))
- (while (< j len)
- (let ((split (split-char (ps-mule-string-char string i))))
- (aset str j (nth 1 split))
- (aset str (1+ j) (nth 2 split))
- (setq i (ps-mule-next-index string i)
- j (+ j 2)))))
- str))
-
-(defun ps-mule-encode-8bit (string)
- (let* ((dim (charset-dimension
- (char-charset (ps-mule-string-char string 0))))
- (len (* (ps-mule-chars-in-string string) dim))
- (str (make-string len 0))
- (i 0) (j 0))
- (if (= dim 1)
- (while (< j len)
- (aset str j
- (+ (nth 1 (split-char (ps-mule-string-char string i))) 128))
- (setq i (ps-mule-next-index string i)
- j (1+ j)))
- (while (< j len)
- (let ((split (split-char (ps-mule-string-char string i))))
- (aset str j (+ (nth 1 split) 128))
- (aset str (1+ j) (+ (nth 2 split) 128))
- (setq i (ps-mule-next-index string i)
- j (+ j 2)))))
- str))
-
-;; Special encoding function for Ethiopic.
-(define-ccl-program ccl-encode-ethio-unicode
- `(1
- ((read r2)
- (loop
- (if (r2 == ,leading-code-private-22)
- ((read r0)
- (if (r0 == ,(charset-id 'ethiopic))
- ((read r1 r2)
- (r1 &= 127) (r2 &= 127)
- (call ccl-encode-ethio-font)
- (write r1)
- (write-read-repeat r2))
- ((write r2 r0)
- (repeat))))
- (write-read-repeat r2))))))
-
-(defun ps-mule-encode-ethiopic (string)
- (ccl-execute-on-string (symbol-value 'ccl-encode-ethio-unicode)
- (make-vector 9 nil)
- string))
-
-;; A charset which we are now processing.
-(defvar ps-mule-current-charset nil)
-
-(defun ps-mule-get-font-spec (charset font-type)
- "Return FONT-SPEC for printing characters CHARSET with FONT-TYPE.
-FONT-SPEC is a list of FONT-SRC, FONT-NAME, ENCODING, and BYTES,
-this information is extracted from `ps-mule-font-info-database'
-See the documentation of `ps-mule-font-info-database' for the meaning
-of each element of the list."
- (let ((slot (cdr (assq charset ps-mule-font-info-database))))
- (if slot
- (cdr (or (assq font-type slot)
- (and (eq font-type 'bold-italic)
- (or (assq 'bold slot) (assq 'italic slot)))
- (assq 'normal slot))))))
-
-;; Functions to access each element of FONT-SPEC.
-(defsubst ps-mule-font-spec-src (font-spec) (car font-spec))
-(defsubst ps-mule-font-spec-name (font-spec) (nth 1 font-spec))
-(defsubst ps-mule-font-spec-encoding (font-spec) (nth 2 font-spec))
-(defsubst ps-mule-font-spec-bytes (font-spec) (nth 3 font-spec))
-
-(defsubst ps-mule-printable-p (charset)
- "Non-nil if characters in CHARSET is printable."
- (ps-mule-get-font-spec charset 'normal))
-
-(defconst ps-mule-external-libraries
- '((builtin nil
- nil nil nil)
- (bdf nil
- bdf-generate-prologue bdf-generate-font bdf-generate-glyphs)
- (pcf nil
- pcf-generate-prologue pcf-generate-font pcf-generate-glyphs)
- (vflib nil
- vflib-generate-prologue vflib-generate-font vflib-generate-glyphs))
- "Alist of information of external libraries to support PostScript printing.
-Each element has the form:
- (FONT-SRC INITIALIZED-P PROLOGUE-FUNC FONT-FUNC GLYPHS-FUNC)
-
-FONT-SRC is a source of font: builtin, bdf, pcf, or vflib. Except for
-builtin, libraries of the same names are necessary, but currently, we
-only have the library `bdf'.
-
-INITIALIZED-P is a flag to tell this library is initialized or not.
-
-PROLOGUE-FUNC is a function to call to get a PostScript codes which
-define procedures to use this library. It is called with no argument,
-and should return a list of strings.
-
-FONT-FUNC is a function to call to get a PostScript codes which define
-a new font. It is called with one argument FONT-SPEC, and should
-return a list of strings.
-
-GLYPHS-FUNC is a function to call to get a PostScript codes which
-define glyphs of characters. It is called with three arguments
-FONT-SPEC, CODE-LIST, and BYTES, and should return a list of strings.")
-
-(defun ps-mule-init-external-library (font-spec)
- "Initialize external librarie specified in FONT-SPEC for PostScript printing.
-See the documentation of `ps-mule-get-font-spec' for the meaning of
-each element of the list."
- (let* ((font-src (ps-mule-font-spec-src font-spec))
- (slot (assq font-src ps-mule-external-libraries)))
- (or (not font-src)
- (nth 1 slot)
- (let ((func (nth 2 slot)))
- (if func
- (progn
- (or (featurep font-src) (require font-src))
- (ps-output-prologue (funcall func))))
- (setcar (cdr slot) t)))))
-
-;; Cached glyph information of fonts, alist of:
-;; (FONT-NAME ((FONT-TYPE-NUMBER . SCALED-FONT-NAME) ...)
-;; cache CODE0 CODE1 ...)
-(defvar ps-mule-font-cache nil)
-
-(defun ps-mule-generate-font (font-spec charset)
- "Generate PostScript codes to define a new font in FONT-SPEC for CHARSET."
- (let* ((font-cache (assoc (ps-mule-font-spec-name font-spec)
- ps-mule-font-cache))
- (font-src (ps-mule-font-spec-src font-spec))
- (font-name (ps-mule-font-spec-name font-spec))
- (func (nth 3 (assq font-src ps-mule-external-libraries)))
- (scaled-font-name
- (if (eq charset 'ascii)
- (format "f%d" ps-current-font)
- (format "f%02x-%d"
- (charset-id charset) ps-current-font))))
- (if (and func (not font-cache))
- (ps-output-prologue (funcall func charset font-spec)))
- (ps-output-prologue
- (list (format "/%s %f /%s Def%sFontMule\n"
- scaled-font-name ps-font-size font-name
- (if (eq ps-mule-current-charset 'ascii) "Ascii" ""))))
- (if font-cache
- (setcar (cdr font-cache)
- (cons (cons ps-current-font scaled-font-name)
- (nth 1 font-cache)))
- (setq font-cache (list font-name
- (list (cons ps-current-font scaled-font-name))
- 'cache))
- (setq ps-mule-font-cache (cons font-cache ps-mule-font-cache)))
- font-cache))
-
-(defun ps-mule-generate-glyphs (font-spec code-list)
- "Generate PostScript codes which generate glyphs for CODE-LIST of FONT-SPEC."
- (let* ((font-src (ps-mule-font-spec-src font-spec))
- (func (nth 4 (assq font-src ps-mule-external-libraries))))
- (if func
- (ps-output-prologue
- (funcall func font-spec code-list
- (ps-mule-font-spec-bytes font-spec))))))
-
-(defvar ps-last-font nil)
-
-(defun ps-mule-prepare-font (font-spec string charset &optional no-setfont)
- "Generate PostScript codes to print STRING of CHARSET by font in FONT-SPEC.
-The generated codes goes to prologue part except for a code for
-setting the current font (using PostScript procedure `FM').
-If optional arg NO-SETFONT is non-nil, don't generate the code for
-setting the current font."
- (let ((font-cache (assoc (ps-mule-font-spec-name font-spec)
- ps-mule-font-cache)))
- (or (and font-cache (assq ps-current-font (nth 1 font-cache)))
- (setq font-cache (ps-mule-generate-font font-spec charset)))
- (or no-setfont
- (let ((new-font (cdr (assq ps-current-font (nth 1 font-cache)))))
- (or (equal new-font ps-last-font)
- (progn
- (ps-output (format "/%s FM\n" new-font))
- (setq ps-last-font new-font)))))
- (if (nth 4 (assq (ps-mule-font-spec-src font-spec)
- ps-mule-external-libraries))
- ;; We have to generate PostScript codes which define glyphs.
- (let* ((cached-codes (nthcdr 2 font-cache))
- (newcodes nil)
- (bytes (ps-mule-font-spec-bytes font-spec))
- (len (length string))
- (i 0)
- code)
- (while (< i len)
- (setq code
- (if (= bytes 1) (aref string i)
- (+ (* (aref string i) 256) (aref string (1+ i)))))
- (or (memq code cached-codes)
- (progn
- (setq newcodes (cons code newcodes))
- (setcdr cached-codes (cons code (cdr cached-codes)))))
- (setq i (+ i bytes)))
- (if newcodes
- (ps-mule-generate-glyphs font-spec newcodes))))))
-
-;; List of charsets of multibyte characters in a text being printed.
-;; If the text doesn't contain any multibyte characters (i.e. only
-;; ASCII), the value is nil.
-(defvar ps-mule-charset-list nil)
-
-;; This constant string is a PostScript code embeded as is in the
-;; header of generated PostScript.
-
-(defvar ps-mule-prologue-generated nil)
-
-(defconst ps-mule-prologue
- "%%%% Start of Mule Section
-
-%% Working dictionaly for general use.
-/MuleDict 10 dict def
-
-%% Define already scaled font for non-ASCII character sets.
-/DefFontMule { % fontname size basefont |- --
- findfont exch scalefont definefont pop
-} bind def
-
-%% Define already scaled font for ASCII character sets.
-/DefAsciiFontMule { % fontname size basefont |-
- MuleDict begin
- findfont dup /Encoding get /ISOLatin1Encoding exch def
- exch scalefont reencodeFontISO
- end
-} def
-
-%% Set the specified non-ASCII font to use. It doesn't install
-%% Ascent, etc.
-/FM { % fontname |- --
- findfont setfont
-} bind def
-
-%% Show vacant box for characters which don't have appropriate font.
-/SB { % count column |- --
- SpaceWidth mul /w exch def
- 1 exch 1 exch { %for
- pop
- gsave
- 0 setlinewidth
- 0 Descent rmoveto w 0 rlineto
- 0 LineHeight rlineto w neg 0 rlineto closepath stroke
- grestore
- w 0 rmoveto
- } for
-} bind def
-
-%% Flag to tell if we are now handling a composite character. This is
-%% defined here because both composite character handler and bitmap font
-%% handler require it.
-/Cmpchar false def
-
-%%%% End of Mule Section
-
-"
- "PostScript code for printing multibyte characters.")
-
-(defun ps-mule-skip-same-charset (charset)
- "Skip characters of CHARSET following the current point."
- (while (eq (charset-after) charset) (forward-char 1)))
-
-(defun ps-mule-find-wrappoint (from to char-width)
- "Find a longest sequence at FROM which is printable in the current line.
-
-TO limits the sequence. It is assumed that all characters between
-FROM and TO belong to a charset set in `ps-mule-current-charset'.
-
-CHAR-WIDTH is an average width of ASCII characters in the current font.
-
-The return value is a cons of ENDPOS and RUN-WIDTH, where
-ENDPOS is an end position of the sequence,
-RUN-WIDTH is the width of the sequence."
- (let (run-width)
- (if (eq ps-mule-current-charset 'composition)
- ;; We must draw one char by one.
- (let ((ch (char-after from)))
- (setq run-width (* (char-width ch) char-width))
- (if (> run-width ps-width-remaining)
- (setq run-width ps-width-remaining)
- (setq from (ps-mule-next-point from))))
- ;; We assume that all characters in this range have the same width.
- (let ((width (charset-width ps-mule-current-charset)))
- (setq run-width (* (- to from) char-width width))
- (if (> run-width ps-width-remaining)
- (setq from (min
- (+ from (truncate (/ ps-width-remaining char-width)))
- to)
- run-width ps-width-remaining)
- (setq from to))))
- (cons from run-width)))
-
-(defun ps-mule-plot-string (from to &optional bg-color)
- "Generate PostScript code for ploting characters in the region FROM and TO.
-It is assumed that all characters in this region belong to the
-charset `ps-mule-current-charset'.
-Optional arg BG-COLOR specifies background color.
-The return value is a cons of ENDPOS and WIDTH of the sequence
-actually plotted by this function."
- (let* ((wrappoint (ps-mule-find-wrappoint
- from to (ps-avg-char-width 'ps-font-for-text)))
- (to (car wrappoint))
- (font-type (car (nth ps-current-font
- (ps-font-alist 'ps-font-for-text))))
- (font-spec (ps-mule-get-font-spec ps-mule-current-charset font-type))
- (encoding (ps-mule-font-spec-encoding font-spec))
- (string (buffer-substring-no-properties from to)))
- (cond
- ((= from to)
- ;; We can't print any more characters in the current line.
- nil)
-
- (font-spec
- ;; We surely have a font for printing this character set.
- (if (coding-system-p encoding)
- (setq string (encode-coding-string string encoding))
- (if (functionp encoding)
- (setq string (funcall encoding string))
- (if encoding
- (error "Invalid coding system or function: %s" encoding))))
- (setq string (string-as-unibyte string))
- (if (ps-mule-font-spec-src font-spec)
- (ps-mule-prepare-font font-spec string ps-mule-current-charset)
- (ps-set-font ps-current-font))
- (ps-output-string string)
- (ps-output " S\n"))
-
- ((eq ps-mule-current-charset 'latin-iso8859-1)
- ;; Latin-1 can be printed by a normal ASCII font.
- (ps-set-font ps-current-font)
- (ps-output-string
- (string-as-unibyte (encode-coding-string string 'iso-latin-1)))
- (ps-output " S\n"))
-
- ((eq ps-mule-current-charset 'composition)
- (let* ((ch (char-after from))
- (width (char-width ch))
- (ch-list (decompose-composite-char ch 'list t)))
- (if (consp (nth 1 ch-list))
- (ps-mule-plot-rule-cmpchar ch-list width font-type)
- (ps-mule-plot-cmpchar ch-list width t font-type))))
-
- (t
- ;; No way to print this charset. Just show a vacant box of an
- ;; appropriate width.
- (ps-output (format "%d %d SB\n"
- (length string)
- (if (eq ps-mule-current-charset 'composition)
- (char-width (char-after from))
- (charset-width ps-mule-current-charset))))))
- wrappoint))
-
-;; Composite font support
-
-(defvar ps-mule-cmpchar-prologue-generated nil)
-
-(defconst ps-mule-cmpchar-prologue
- "%%%% Composite character handler
-/CmpcharWidth 0 def
-/CmpcharRelativeCompose 0 def
-/CmpcharRelativeSkip 0.4 def
-
-%% Get a bounding box (relative to currentpoint) of STR.
-/GetPathBox { % str |- --
- gsave
- currentfont /FontType get 3 eq { %ifelse
- stringwidth pop pop
- } {
- currentpoint /y exch def pop
- false charpath flattenpath pathbbox
- y sub /URY exch def pop
- y sub /LLY exch def pop
- } ifelse
- grestore
-} bind def
-
-%% Beginning of composite char.
-/BC { % str xoff width |- --
- /Cmpchar true def
- /CmpcharWidth exch def
- currentfont /RelativeCompose known {
- /CmpcharRelativeCompose currentfont /RelativeCompose get def
- } {
- /CmpcharRelativeCompose false def
- } ifelse
- /bgsave bg def /bgcolorsave bgcolor def
- /Effectsave Effect def
- gsave % Reflect effect only at first
- /Effect Effect 1 2 add 4 add 16 add and def
- /f0 findfont setfont ( ) 0 CmpcharWidth getinterval S
- grestore
- /Effect Effectsave 8 32 add and def % enable only shadow and outline
- false BG
- gsave SpaceWidth mul 0 rmoveto dup GetPathBox S grestore
- /y currentpoint exch pop def
- /HIGH URY y add def /LOW LLY y add def
-} bind def
-
-%% End of composite char.
-/EC { % -- |- --
- /bg bgsave def /bgcolor bgcolorsave def
- /Effect Effectsave def
- /Cmpchar false def
- CmpcharWidth SpaceWidth mul 0 rmoveto
-} bind def
-
-%% Rule base composition
-/RBC { % str xoff gref nref |- --
- /nref exch def /gref exch def
- gsave
- SpaceWidth mul 0 rmoveto
- dup
- GetPathBox
- [ HIGH currentpoint exch pop LOW HIGH LOW add 2 div ] gref get
- [ URY LLY sub LLY neg 0 URY LLY sub 2 div ] nref get
- sub /btm exch def
- /top btm URY LLY sub add def
- top HIGH gt { /HIGH top def } if
- btm LOW lt { /LOW btm def } if
- currentpoint pop btm LLY sub moveto
- S
- grestore
-} bind def
-
-%% Relative composition
-/RLC { % str |- --
- gsave
- dup GetPathBox
- CmpcharRelativeCompose type /integertype eq {
- LLY CmpcharRelativeCompose gt { % compose on top
- currentpoint pop HIGH LLY sub CmpcharRelativeSkip add moveto
- /HIGH HIGH URY LLY sub add CmpcharRelativeSkip add def
- } { URY 0 le { % compose under bottom
- currentpoint pop LOW LLY add CmpcharRelativeSkip sub moveto
- /LOW LOW URY LLY sub sub CmpcharRelativeSkip sub def
- } if } ifelse } if
- S
- grestore
-} bind def
-%%%% End of composite character handler
-
-"
- "PostScript code for printing composite characters.")
-
-(defun ps-mule-plot-rule-cmpchar (ch-rule-list total-width font-type)
- (let* ((leftmost 0.0)
- (rightmost (float (char-width (car ch-rule-list))))
- (l (cons '(3 . 3) ch-rule-list))
- (cmpchar-elements nil))
- (while l
- (let* ((this (car l))
- (gref (car this))
- (nref (cdr this))
- ;; X-axis info (0:left, 1:center, 2:right)
- (gref-x (% gref 3))
- (nref-x (% nref 3))
- ;; Y-axis info (0:top, 1:base, 2:bottom, 3:center)
- (gref-y (if (= gref 4) 3 (/ gref 3)))
- (nref-y (if (= nref 4) 3 (/ nref 3)))
- (width (float (char-width (car (cdr l)))))
- left)
- (setq left (+ leftmost
- (/ (* (- rightmost leftmost) gref-x) 2.0)
- (- (/ (* nref-x width) 2.0))))
- (setq cmpchar-elements
- (cons (list (car (cdr l)) left gref-y nref-y) cmpchar-elements))
- (if (< left leftmost)
- (setq leftmost left))
- (if (> (+ left width) rightmost)
- (setq rightmost (+ left width)))
- (setq l (nthcdr 2 l))))
- (if (< leftmost 0)
- (let ((l cmpchar-elements))
- (while l
- (setcar (cdr (car l))
- (- (nth 1 (car l)) leftmost))
- (setq l (cdr l)))))
- (ps-mule-plot-cmpchar (nreverse cmpchar-elements)
- total-width nil font-type)))
-
-(defun ps-mule-plot-cmpchar (elements total-width relativep font-type)
- (let* ((ch (if relativep (car elements) (car (car elements))))
- (str (ps-mule-prepare-cmpchar-font ch font-type)))
- (ps-output-string str)
- (ps-output (format " %d %d BC "
- (if relativep 0 (nth 1 (car elements)))
- total-width)))
- (setq elements (cdr elements))
- (while elements
- (let* ((elt (car elements))
- (ch (if relativep elt (car elt)))
- (str (ps-mule-prepare-cmpchar-font ch font-type)))
- (if relativep
- (progn
- (ps-output-string str)
- (ps-output " RLC "))
- (ps-output-string str)
- (ps-output (format " %d %d %d RBC "
- (nth 1 elt) (nth 2 elt) (nth 3 elt)))))
- (setq elements (cdr elements)))
- (ps-output "EC\n"))
-
-(defun ps-mule-prepare-cmpchar-font (char font-type)
- (let* ((ps-mule-current-charset (char-charset char))
- (font-spec (ps-mule-get-font-spec ps-mule-current-charset font-type))
- (encoding (ps-mule-font-spec-encoding font-spec))
- (str (char-to-string char)))
- (cond (font-spec
- (if (coding-system-p encoding)
- (setq str (encode-coding-string str encoding))
- (if (functionp encoding)
- (setq str (funcall encoding str))
- (if encoding
- (error "Invalid coding system or function: %s" encoding))))
- (setq str (string-as-unibyte str))
- (if (ps-mule-font-spec-src font-spec)
- (ps-mule-prepare-font font-spec str ps-mule-current-charset)
- (ps-set-font ps-current-font)))
-
- ((eq ps-mule-current-charset 'latin-iso8859-1)
- (ps-set-font ps-current-font)
- (setq str
- (string-as-unibyte (encode-coding-string str 'iso-latin-1))))
-
- (t
- ;; No font for CHAR.
- (ps-set-font ps-current-font)
- (setq str " ")))
- str))
-
-;; Bitmap font support
-
-(defvar ps-mule-bitmap-prologue-generated nil)
-
-(defconst ps-mule-bitmap-prologue
- "%%%% Bitmap font handler
-
-/str7 7 string def % working area
-
-%% We grow the dictionary one bunch (1024 entries) by one.
-/BitmapDictArray 256 array def
-/BitmapDictLength 1024 def
-/BitmapDictIndex -1 def
-
-/NewBitmapDict { % -- |- --
- /BitmapDictIndex BitmapDictIndex 1 add def
- BitmapDictArray BitmapDictIndex BitmapDictLength dict put
-} bind def
-
-%% Make at least one dictionary.
-NewBitmapDict
-
-/AddBitmap { % gloval-charname bitmap-data |- --
- BitmapDictArray BitmapDictIndex get
- dup length BitmapDictLength ge {
- pop
- NewBitmapDict
- BitmapDictArray BitmapDictIndex get
- } if
- 3 1 roll put
-} bind def
-
-/GetBitmap { % gloval-charname |- bitmap-data
- 0 1 BitmapDictIndex { BitmapDictArray exch get begin } for
- load
- 0 1 BitmapDictIndex { pop end } for
-} bind def
-
-%% Return a global character name which can be used as a key in the
-%% bitmap dictionary.
-/GlobalCharName { % fontidx code1 code2 |- gloval-charname
- exch 256 mul add exch 65536 mul add 16777216 add 16 str7 cvrs 0 66 put
- str7 cvn
-} bind def
-
-%% Character code holder for a 2-byte character.
-/FirstCode -1 def
-
-%% Glyph rendering procedure
-/BuildGlyphCommon { % fontdict charname |- --
- 1 index /FontDimension get 1 eq { /FirstCode 0 store } if
- NameIndexDict exch get % STACK: fontdict charcode
- FirstCode 0 lt { %ifelse
- %% This is the first byte of a 2-byte character. Just
- %% remember it for the moment.
- /FirstCode exch store
- pop
- 0 0 setcharwidth
- } {
- 1 index /FontSize get /size exch def
- 1 index /FontSpaceWidthRatio get /ratio exch def
- 1 index /FontIndex get exch FirstCode exch
- GlobalCharName GetBitmap /bmp exch def
- %% bmp == [ DWIDTH BBX-WIDTH BBX-HEIGHT BBX-XOFF BBX-YOFF BITMAP ]
- Cmpchar { %ifelse
- /FontMatrix get [ exch { size div } forall ] /mtrx exch def
- bmp 3 get bmp 4 get mtrx transform
- /LLY exch def pop
- bmp 1 get bmp 3 get add bmp 2 get bmp 4 get add mtrx transform
- /URY exch def pop
- } {
- pop
- } ifelse
- /FirstCode -1 store
-
- bmp 0 get SpaceWidthRatio ratio div mul size div 0 % wx wy
- setcharwidth % We can't use setcachedevice here.
-
- bmp 1 get 0 gt bmp 2 get 0 gt and {
- bmp 1 get bmp 2 get % width height
- true % polarity
- [ size 0 0 size neg bmp 3 get neg bmp 2 get bmp 4 get add ] % matrix
- bmp 5 1 getinterval cvx % datasrc
- imagemask
- } if
- } ifelse
-} bind def
-
-/BuildCharCommon {
- 1 index /Encoding get exch get
- 1 index /BuildGlyph get exec
-} bind def
-
-%% Bitmap font creater
-
-%% Common Encoding shared by all bitmap fonts.
-/EncodingCommon 256 array def
-%% Mapping table from character name to character code.
-/NameIndexDict 256 dict def
-0 1 255 { %for
- /idx exch def
- /idxname idx 256 add 16 (XXX) cvrs dup 0 67 put cvn def % `C' == 67
- EncodingCommon idx idxname put
- NameIndexDict idxname idx put
-} for
-
-/GlobalFontIndex 0 def
-
-%% fontname dim col fontsize relative-compose baseline-offset fbbx |- --
-/BitmapFont {
- 15 dict begin
- /FontBBox exch def
- /BaselineOffset exch def
- /RelativeCompose exch def
- /FontSize exch def
- /FontBBox [ FontBBox { FontSize div } forall ] def
- FontBBox 2 get FontBBox 0 get sub exch div
- /FontSpaceWidthRatio exch def
- /FontDimension exch def
- /FontIndex GlobalFontIndex def
- /FontType 3 def
- /FontMatrix matrix def
- /Encoding EncodingCommon def
- /BuildGlyph { BuildGlyphCommon } def
- /BuildChar { BuildCharCommon } def
- currentdict end
- definefont pop
- /GlobalFontIndex GlobalFontIndex 1 add def
-} bind def
-
-%% Define a new bitmap font.
-%% fontname dim col fontsize relative-compose baseline-offset fbbx |- --
-/NF {
- /fbbx exch def
- %% Convert BDF's FontBoundingBox to PostScript's FontBBox
- [ fbbx 2 get fbbx 3 get
- fbbx 2 get fbbx 0 get add fbbx 3 get fbbx 1 get add ]
- BitmapFont
-} bind def
-
-%% Define a glyph for the specified font and character.
-/NG { % fontname charcode bitmap-data |- --
- /bmp exch def
- exch findfont dup /BaselineOffset get bmp 4 get add bmp exch 4 exch put
- /FontIndex get exch
- dup 256 idiv exch 256 mod GlobalCharName
- bmp AddBitmap
-} bind def
-%%%% End of bitmap font handler
-
-")
-
-;; External library support.
-
-;; The following three functions are to be called from external
-;; libraries which support bitmap fonts (e.g. `bdf') to get
-;; appropriate PostScript code.
-
-(defun ps-mule-generate-bitmap-prologue ()
- (unless ps-mule-bitmap-prologue-generated
- (setq ps-mule-bitmap-prologue-generated t)
- (list ps-mule-bitmap-prologue)))
-
-(defun ps-mule-generate-bitmap-font (&rest args)
- (list (apply 'format "/%s %d %d %f %S %d %S NF\n" args)))
-
-(defun ps-mule-generate-bitmap-glyph (font-name code dwidth bbx bitmap)
- (format "/%s %d [ %d %d %d %d %d <%s> ] NG\n"
- font-name code
- dwidth (aref bbx 0) (aref bbx 1) (aref bbx 2) (aref bbx 3)
- bitmap))
-
-;; Mule specific initializers.
-
-(defun ps-mule-initialize ()
- "Produce Poscript code in the prologue part for multibyte characters."
- (setq ps-mule-current-charset 'ascii
- ps-mule-font-cache nil
- ps-mule-prologue-generated nil
- ps-mule-cmpchar-prologue-generated nil
- ps-mule-bitmap-prologue-generated nil)
- (mapcar (function (lambda (x) (setcar (cdr x) nil)))
- ps-mule-external-libraries))
-
-(defun ps-mule-begin (from to)
- (if (and (boundp 'enable-multibyte-characters)
- enable-multibyte-characters)
- ;; Initialize `ps-mule-charset-list'. If some characters aren't
- ;; printable, warn it.
- (let ((charsets (delete 'ascii (find-charset-region from to))))
- (setq ps-mule-charset-list charsets)
- (save-excursion
- (goto-char from)
- (if (search-forward "\200" to t)
- (setq ps-mule-charset-list
- (cons 'composition ps-mule-charset-list))))
- (if (and (catch 'tag
- (while charsets
- (if (or (eq (car charsets) 'composition)
- (ps-mule-printable-p (car charsets)))
- (setq charsets (cdr charsets))
- (throw 'tag t))))
- (not (y-or-n-p "Font for some characters not found, continue anyway? ")))
- (error "Printing cancelled"))))
-
- (if ps-mule-charset-list
- (let ((l ps-mule-charset-list)
- font-spec)
- (unless ps-mule-prologue-generated
- (ps-output-prologue ps-mule-prologue)
- (setq ps-mule-prologue-generated t))
- ;; If external functions are necessary, generate prologues for them.
- (while l
- (if (and (eq (car l) 'composition)
- (not ps-mule-cmpchar-prologue-generated))
- (progn
- (ps-output-prologue ps-mule-cmpchar-prologue)
- (setq ps-mule-cmpchar-prologue-generated t))
- (if (setq font-spec (ps-mule-get-font-spec (car l) 'normal))
- (ps-mule-init-external-library font-spec)))
- (setq l (cdr l)))))
-
- ;; If ASCII font is also specified in ps-mule-font-info-database,
- ;; use it istead of what specified in ps-font-info-database.
- (let ((font-spec (ps-mule-get-font-spec 'ascii 'normal)))
- (if font-spec
- (progn
- (unless ps-mule-prologue-generated
- (ps-output-prologue ps-mule-prologue)
- (setq ps-mule-prologue-generated t))
- (ps-mule-init-external-library font-spec)
- (let ((font (ps-font-alist 'ps-font-for-text))
- (i 0))
- (while font
- (let ((ps-current-font i))
- ;; Be sure to download a glyph for SPACE in advance.
- (ps-mule-prepare-font
- (ps-mule-get-font-spec 'ascii (car font))
- " " 'ascii 'no-setfont))
- (setq font (cdr font) i (1+ i))))))))
-
-\f
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-