+(defsubst ps-font-alist (font-sym)
+ (get font-sym 'fonts))
+
+(defun ps-font (font-sym font-type)
+ "Font family name for text of `font-type', when generating PostScript."
+ (let* ((font-list (ps-font-alist font-sym))
+ (normal-font (cdr (assq 'normal font-list))))
+ (while (and font-list (not (eq font-type (car (car font-list)))))
+ (setq font-list (cdr font-list)))
+ (or (cdr (car font-list)) normal-font)))
+
+(defun ps-fonts (font-sym)
+ (mapcar 'cdr (ps-font-alist font-sym)))
+
+(defun ps-font-number (font-sym font-type)
+ (or (ps-alist-position font-type (ps-font-alist font-sym))
+ 0))
+
+(defsubst ps-line-height (font-sym)
+ "The height of a line, for generating PostScript.
+This is the value that ps-print uses to determine the height,
+y-dimension, of the lines of text it has printed, and thus affects the
+point at which page-breaks are placed.
+The line-height is *not* the same as the point size of the font."
+ (get font-sym 'line-height))
+
+(defsubst ps-title-line-height (font-sym)
+ "The height of a `title' line, for generating PostScript.
+This is the value that ps-print uses to determine the height,
+y-dimension, of the lines of text it has printed, and thus affects the
+point at which page-breaks are placed.
+The title-line-height is *not* the same as the point size of the font."
+ (get font-sym 'title-line-height))
+
+(defsubst ps-space-width (font-sym)
+ "The width of a space character, for generating PostScript.
+This value is used in expanding tab characters."
+ (get font-sym 'space-width))
+
+(defsubst ps-avg-char-width (font-sym)
+ "The average width, in points, of a character, for generating PostScript.
+This is the value that ps-print uses to determine the length,
+x-dimension, of the text it has printed, and thus affects the point at
+which long lines wrap around."
+ (get font-sym 'avg-char-width))
+
+\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 (not (string< mule-version "4.0"))
+ (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) (char-bytes (sref string 0))))
+ (defalias 'ps-mule-string-char 'sref)
+ (defun ps-mule-next-index (str i)
+ (+ i (char-bytes (sref str 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-iso8859-1
+ (normal nil nil iso-latin-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
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defun ps-line-lengths-internal ()
+ "Display the correspondence between a line length and a font size,
+using the current ps-print setup.
+Try: pr -t file | awk '{printf \"%3d %s\n\", length($0), $0}' | sort -r | head"
+ (let ((buf (get-buffer-create "*Line-lengths*"))
+ (ifs ps-font-size) ; initial font size
+ (icw (ps-avg-char-width 'ps-font-for-text)) ; initial character width
+ (print-width (progn (ps-get-page-dimensions)
+ ps-print-width))
+ (ps-setup (ps-setup)) ; setup for the current buffer
+ (fs-min 5) ; minimum font size
+ cw-min ; minimum character width
+ nb-cpl-max ; maximum nb of characters per line
+ (fs-max 14) ; maximum font size
+ cw-max ; maximum character width
+ nb-cpl-min ; minimum nb of characters per line
+ fs ; current font size
+ cw ; current character width
+ nb-cpl ; current nb of characters per line
+ )
+ (setq cw-min (/ (* icw fs-min) ifs)
+ nb-cpl-max (floor (/ print-width cw-min))
+ cw-max (/ (* icw fs-max) ifs)
+ nb-cpl-min (floor (/ print-width cw-max))
+ nb-cpl nb-cpl-min)
+ (set-buffer buf)
+ (goto-char (point-max))
+ (or (bolp) (insert "\n"))
+ (insert ps-setup
+ "nb char per line / font size\n")
+ (while (<= nb-cpl nb-cpl-max)
+ (setq cw (/ print-width (float nb-cpl))
+ fs (/ (* ifs cw) icw))
+ (insert (format "%3s %s\n" nb-cpl fs))
+ (setq nb-cpl (1+ nb-cpl)))
+ (insert "\n")
+ (display-buffer buf 'not-this-window)))
+
+(defun ps-nb-pages (nb-lines)
+ "Display correspondence between font size and the number of pages.
+The correspondence is based on having NB-LINES lines of text,
+and on the current ps-print setup."
+ (let ((buf (get-buffer-create "*Nb-Pages*"))
+ (ifs ps-font-size) ; initial font size
+ (ilh (ps-line-height 'ps-font-for-text)) ; initial line height
+ (page-height (progn (ps-get-page-dimensions)
+ ps-print-height))
+ (ps-setup (ps-setup)) ; setup for the current buffer
+ (fs-min 4) ; minimum font size
+ lh-min ; minimum line height
+ nb-lpp-max ; maximum nb of lines per page
+ nb-page-min ; minimum nb of pages
+ (fs-max 14) ; maximum font size
+ lh-max ; maximum line height
+ nb-lpp-min ; minimum nb of lines per page
+ nb-page-max ; maximum nb of pages
+ fs ; current font size
+ lh ; current line height
+ nb-lpp ; current nb of lines per page
+ nb-page ; current nb of pages
+ )
+ (setq lh-min (/ (* ilh fs-min) ifs)
+ nb-lpp-max (floor (/ page-height lh-min))
+ nb-page-min (ceiling (/ (float nb-lines) nb-lpp-max))
+ lh-max (/ (* ilh fs-max) ifs)
+ nb-lpp-min (floor (/ page-height lh-max))
+ nb-page-max (ceiling (/ (float nb-lines) nb-lpp-min))
+ nb-page nb-page-min)
+ (set-buffer buf)
+ (goto-char (point-max))
+ (or (bolp) (insert "\n"))
+ (insert ps-setup
+ (format "%d lines\n" nb-lines)
+ "nb page / font size\n")
+ (while (<= nb-page nb-page-max)
+ (setq nb-lpp (ceiling (/ nb-lines (float nb-page)))
+ lh (/ page-height nb-lpp)
+ fs (/ (* ifs lh) ilh))
+ (insert (format "%s %s\n" nb-page fs))
+ (setq nb-page (1+ nb-page)))
+ (insert "\n")
+ (display-buffer buf 'not-this-window)))
+
+;; macros used in `ps-select-font'
+(defmacro ps-lookup (key) `(cdr (assq ,key font-entry)))
+(defmacro ps-size-scale (key) `(/ (* (ps-lookup ,key) font-size) size))
+
+(defun ps-select-font (font-family sym font-size title-font-size)
+ (let ((font-entry (cdr (assq font-family ps-font-info-database))))
+ (or font-entry
+ (error "Don't have data to scale font %s. Known fonts families are %s"
+ font-family
+ (mapcar 'car ps-font-info-database)))
+ (let ((size (ps-lookup 'size)))
+ (put sym 'fonts (ps-lookup 'fonts))
+ (put sym 'space-width (ps-size-scale 'space-width))
+ (put sym 'avg-char-width (ps-size-scale 'avg-char-width))
+ (put sym 'line-height (ps-size-scale 'line-height))
+ (put sym 'title-line-height
+ (/ (* (ps-lookup 'line-height) title-font-size) size)))))
+