home *** CD-ROM | disk | FTP | other *** search
Text File | 1991-07-07 | 43.2 KB | 1,086 lines |
- ;;; -*- Mode: LISP; Syntax: Common-lisp; Package: XLIB; Base: 10; Lowercase: Yes -*-
-
- ;;; CLX text keyboard and pointer requests
-
- ;;;
- ;;; TEXAS INSTRUMENTS INCORPORATED
- ;;; P.O. BOX 2909
- ;;; AUSTIN, TEXAS 78769
- ;;;
- ;;; Copyright (C) 1987 Texas Instruments Incorporated.
- ;;;
- ;;; Permission is granted to any individual or institution to use, copy, modify,
- ;;; and distribute this software, provided that this complete copyright and
- ;;; permission notice is maintained, intact, in all copies and supporting
- ;;; documentation.
- ;;;
- ;;; Texas Instruments Incorporated provides this software "as is" without
- ;;; express or implied warranty.
- ;;;
-
- (in-package :xlib)
-
- ;; Strings are broken up into chunks of this size
- (defparameter *max-string-size* 254)
-
- ;; In the functions below, the transform is used to convert an element of the
- ;; sequence into a font index. The transform is applied to each element of the
- ;; (sub)sequence, until either the transform returns nil or the end of the
- ;; (sub)sequence is reached. If transform returns nil for an element, the
- ;; index of that element in the sequence is returned, otherwise nil is
- ;; returned.
-
- (deftype translation-function ()
- #+explorer t
- #-explorer
- '(function (sequence array-index array-index (or null font) vector array-index)
- (values array-index (or null int16 font) (or null int32))))
-
- ;; In the functions below, if width is specified, it is assumed to be the pixel
- ;; width of whatever string of glyphs is actually drawn. Specifying width will
- ;; allow for appending the output of subsequent calls to the same protocol
- ;; request, provided gcontext has not been modified in the interim. If width
- ;; is not specified, appending of subsequent output might not occur.
- ;; Specifying width is simply a hint, for performance. Note that specifying
- ;; width may be difficult if transform can return nil.
-
- (defun translate-default (src src-start src-end font dst dst-start)
- ;; dst is guaranteed to have room for (- src-end src-start) integer elements,
- ;; starting at dst-start; whether dst holds 8-bit or 16-bit elements depends
- ;; on context. font is the current font, if known. The function should
- ;; translate as many elements of src as possible into indexes in the current
- ;; font, and store them into dst.
- ;;
- ;; The first return value should be the src index of the first untranslated
- ;; element. If no further elements need to be translated, the second return
- ;; value should be nil. If a horizontal motion is required before further
- ;; translation, the second return value should be the delta in x coordinate.
- ;; If a font change is required for further translation, the second return
- ;; value should be the new font. If known, the pixel width of the translated
- ;; text can be returned as the third value; this can allow for appending of
- ;; subsequent output to the same protocol request, if no overall width has
- ;; been specified at the higher level.
- ;; (returns values: ending-index
- ;; (OR null horizontal-motion font)
- ;; (OR null translated-width))
- (declare (type sequence src)
- (type array-index src-start src-end dst-start)
- (type (or null font) font)
- (type vector dst)
- (inline graphic-char-p))
- (declare (values integer (or null integer font) (or null integer)))
- font ;;not used
- (if (stringp src)
- (do ((i src-start (index+ i 1))
- (j dst-start (index+ j 1))
- (char))
- ((index>= i src-end)
- i)
- (declare (type array-index i j))
- (if (graphic-char-p (setq char (char src i)))
- (setf (aref dst j) (char->card8 char))
- (return i)))
- (do ((i src-start (index+ i 1))
- (j dst-start (index+ j 1))
- (elt))
- ((index>= i src-end)
- i)
- (declare (type array-index i j))
- (setq elt (elt src i))
- (cond ((and (characterp elt) (graphic-char-p elt))
- (setf (aref dst j) (char->card8 elt)))
- ((integerp elt)
- (setf (aref dst j) elt))
- (t
- (return i))))))
-
- ;; There is a question below of whether translate should always be required, or
- ;; if not, what the default should be or where it should come from. For
- ;; example, the default could be something that expected a string as src and
- ;; translated the CL standard character set to ASCII indexes, and ignored fonts
- ;; and bits. Or the default could expect a string but otherwise be "system
- ;; dependent". Or the default could be something that expected a vector of
- ;; integers and did no translation. Or the default could come from the
- ;; gcontext (but what about text-extents and text-width?).
-
- (defun text-extents (font sequence &key (start 0) end translate)
- ;; If multiple fonts are involved, font-ascent and font-descent will be the
- ;; maximums. If multiple directions are involved, the direction will be nil.
- ;; Translate will always be called with a 16-bit dst buffer.
- (declare (type sequence sequence)
- (type (or font gcontext) font))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg #+Genera * #-Genera translate))
- (declare (values width ascent descent left right
- font-ascent font-descent direction
- (or null array-index)))
- (when (type? font 'gcontext)
- (force-gcontext-changes font)
- (setq font (gcontext-font font t)))
- (check-type font font)
- (let* ((left-bearing 0)
- (right-bearing 0)
- ;; Sum of widths
- (width 0)
- (ascent 0)
- (descent 0)
- (overall-ascent (font-ascent font))
- (overall-descent (font-descent font))
- (overall-direction (font-direction font))
- (next-start nil)
- (display (font-display font)))
- (declare (type int16 ascent descent overall-ascent overall-descent)
- (type int32 left-bearing right-bearing width)
- (type (or null array-index) next-start)
- (type display display))
- (with-display (display)
- (do* ((wbuf (display-tbuf16 display))
- (src-end (or end (length sequence)))
- (src-start start (index+ src-start buf-end))
- (end (index-min src-end (index+ src-start *buffer-text16-size*))
- (index-min src-end (index+ src-start *buffer-text16-size*)))
- (buf-end 0)
- (new-font)
- (font-ascent 0)
- (font-descent 0)
- (font-direction)
- (stop-p nil))
- ((or stop-p (index>= src-start src-end))
- (when (index< src-start src-end)
- (setq next-start src-start)))
- (declare (type buffer-text16 wbuf)
- (type array-index src-start src-end end buf-end)
- (type int16 font-ascent font-descent)
- (type boolean stop-p))
- ;; Translate the text
- (multiple-value-setq (buf-end new-font)
- (funcall (or translate #'translate-default)
- sequence src-start end font wbuf 0))
- (setq buf-end (- buf-end src-start))
- (cond ((null new-font) (setq stop-p t))
- ((integerp new-font) (incf width (the int32 new-font))))
-
- (let (w a d l r)
- (if (or (font-char-infos-internal font) (font-local-only-p font))
- ;; Calculate text extents locally
- (progn
- (multiple-value-setq (w a d l r)
- (text-extents-local font wbuf 0 buf-end nil))
- (setq font-ascent (the int16 (font-ascent font))
- font-descent (the int16 (font-descent font))
- font-direction (font-direction font)))
- ;; Let the server calculate text extents
- (multiple-value-setq
- (w a d l r font-ascent font-descent font-direction)
- (text-extents-server font wbuf 0 buf-end)))
- (incf width (the int32 w))
- (cond ((index= src-start start)
- (setq left-bearing (the int32 l))
- (setq right-bearing (the int32 r))
- (setq ascent (the int16 a))
- (setq descent (the int16 d)))
- (t
- (setq left-bearing (the int32 (min left-bearing (the int32 l))))
- (setq right-bearing (the int32 (max right-bearing (the int32 r))))
- (setq ascent (the int16 (max ascent (the int16 a))))
- (setq descent (the int16 (max descent (the int16 d)))))))
-
- (when (type? new-font 'font)
- (setq font new-font))
-
- (setq overall-ascent (the int16 (max overall-ascent font-ascent)))
- (setq overall-descent (the int16 (max overall-descent font-descent)))
- (case overall-direction
- (:unknown (setq overall-direction font-direction))
- (:left-to-right (unless (eq font-direction :left-to-right)
- (setq overall-direction nil)))
- (:right-to-left (unless (eq font-direction :right-to-left)
- (setq overall-direction nil))))))
-
- (values width
- ascent
- descent
- left-bearing
- right-bearing
- overall-ascent
- overall-descent
- overall-direction
- next-start)))
-
- (defun text-width (font sequence &key (start 0) end translate)
- ;; Translate will always be called with a 16-bit dst buffer.
- (declare (type sequence sequence)
- (type (or font gcontext) font)
- (type array-index start)
- (type (or null array-index) end))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg #+Genera * #-Genera translate))
- (declare (values integer (or null integer)))
- (when (type? font 'gcontext)
- (force-gcontext-changes font)
- (setq font (gcontext-font font t)))
- (check-type font font)
- (let* ((width 0)
- (next-start nil)
- (display (font-display font)))
- (declare (type int32 width)
- (type (or null array-index) next-start)
- (type display display))
- (with-display (display)
- (do* ((wbuf (display-tbuf16 display))
- (src-end (or end (length sequence)))
- (src-start start (index+ src-start buf-end))
- (end (index-min src-end (index+ src-start *buffer-text16-size*))
- (index-min src-end (index+ src-start *buffer-text16-size*)))
- (buf-end 0)
- (new-font)
- (stop-p nil))
- ((or stop-p (index>= src-start src-end))
- (when (index< src-start src-end)
- (setq next-start src-start)))
- (declare (type buffer-text16 wbuf)
- (type array-index src-start src-end end buf-end)
- (type boolean stop-p))
- ;; Translate the text
- (multiple-value-setq (buf-end new-font)
- (funcall (or translate #'translate-default)
- sequence src-start end font wbuf 0))
- (setq buf-end (- buf-end src-start))
- (cond ((null new-font) (setq stop-p t))
- ((integerp new-font) (incf width (the int32 new-font))))
-
- (incf width
- (if (or (font-char-infos-internal font) (font-local-only-p font))
- (text-extents-local font wbuf 0 buf-end :width-only)
- (text-width-server font wbuf 0 buf-end)))
- (when (type? new-font 'font)
- (setq font new-font))))
- (values width next-start)))
-
- (defun text-extents-server (font string start end)
- (declare (type font font)
- (type string string)
- (type array-index start end))
- (declare (values width ascent descent left right font-ascent font-descent direction))
- (let ((display (font-display font))
- (length (index- end start))
- (font-id (font-id font)))
- (declare (type display display)
- (type array-index length)
- (type resource-id font-id))
- (with-buffer-request-and-reply (display *x-querytextextents* 28 :sizes (8 16 32))
- (((data boolean) (oddp length))
- (length (index+ (index-ceiling length 2) 2))
- (resource-id font-id)
- ((sequence :format char2b :start start :end end :appending t)
- string))
- (values
- (integer-get 16)
- (int16-get 12)
- (int16-get 14)
- (integer-get 20)
- (integer-get 24)
- (int16-get 8)
- (int16-get 10)
- (member8-get 1 :left-to-right :right-to-left)))))
-
- (defun text-width-server (font string start end)
- (declare (type (or font gcontext) font)
- (type string string)
- (type array-index start end))
- (declare (values integer))
- (let ((display (font-display font))
- (length (index- end start))
- (font-id (font-id font)))
- (declare (type display display)
- (type array-index length)
- (type resource-id font-id))
- (with-buffer-request-and-reply (display *x-querytextextents* 28 :sizes 32)
- (((data boolean) (oddp length))
- (length (index+ (index-ceiling length 2) 2))
- (resource-id font-id)
- ((sequence :format char2b :start start :end end :appending t)
- string))
- (values (integer-get 16)))))
-
- (defun text-extents-local (font sequence start end width-only-p)
- (declare (type font font)
- (type sequence sequence)
- (type integer start end)
- (type boolean width-only-p))
- (declare (values width ascent descent overall-left overall-right))
- (let* ((char-infos (font-char-infos font))
- (font-info (font-font-info font)))
- (declare (type font-info font-info))
- (declare (type (simple-array int16 (*)) char-infos)
- (array-register char-infos))
- (if (zerop (length char-infos))
- ;; Fixed width font
- (let* ((font-width (max-char-width font))
- (font-ascent (max-char-ascent font))
- (font-descent (max-char-descent font))
- (width (* (index- end start) font-width)))
- (declare (type int16 font-width font-ascent font-descent)
- (type int32 width))
- (if width-only-p
- width
- (values width
- font-ascent
- font-descent
- (max-char-left-bearing font)
- (+ width (- font-width) (max-char-right-bearing font)))))
-
- ;; Variable-width font
- (let* ((first-col (font-info-min-byte2 font-info))
- (num-cols (1+ (- (font-info-max-byte2 font-info) first-col)))
- (first-row (font-info-min-byte1 font-info))
- (last-row (font-info-max-byte1 font-info))
- (num-rows (1+ (- last-row first-row))))
- (declare (type card8 first-col first-row last-row)
- (type card16 num-cols num-rows))
- (if (or (plusp first-row) (plusp last-row))
-
- ;; Matrix (16 bit) font
- (macrolet ((char-info-elt (sequence elt)
- `(let* ((char (the card16 (elt ,sequence ,elt)))
- (row (- (ash char -8) first-row))
- (col (- (logand char #xff) first-col)))
- (declare (type card16 char)
- (type int16 row col))
- (if (and (< -1 row num-rows) (< -1 col num-cols))
- (index* 6 (index+ (index* row num-cols) col))
- -1))))
- (if width-only-p
- (do ((i start (index1+ i))
- (width 0))
- ((index>= i end) width)
- (declare (type array-index i)
- (type int32 width))
- (let ((n (char-info-elt sequence i)))
- (declare (type fixnum n))
- (unless (minusp n) ;; Ignore characters not in the font
- (incf width (the int16 (aref char-infos (index+ 2 n)))))))
- ;; extents
- (do ((i start (index1+ i))
- (width 0)
- (ascent #x-7fff)
- (descent #x-7fff)
- (left #x7fff)
- (right #x-7fff))
- ((index>= i end)
- (values width ascent descent left right))
- (declare (type array-index i)
- (type int16 ascent descent)
- (type int32 width left right))
- (let ((n (char-info-elt sequence i)))
- (declare (type fixnum n))
- (unless (minusp n) ;; Ignore characters not in the font
- (setq left (min left (+ width (aref char-infos n))))
- (setq right (max right (+ width (aref char-infos (index1+ n)))))
- (incf width (aref char-infos (index+ 2 n)))
- (setq ascent (max ascent (aref char-infos (index+ 3 n))))
- (setq descent (max descent (aref char-infos (index+ 4 n)))))))))
-
- ;; Non-matrix (8 bit) font
- ;; The code here is identical to the above, except for the following macro:
- (macrolet ((char-info-elt (sequence elt)
- `(let ((col (- (the card16 (elt ,sequence ,elt)) first-col)))
- (declare (type int16 col))
- (if (< -1 col num-cols)
- (index* 6 col)
- -1))))
- (if width-only-p
- (do ((i start (index1+ i))
- (width 0))
- ((index>= i end) width)
- (declare (type array-index i)
- (type int32 width))
- (let ((n (char-info-elt sequence i)))
- (declare (type fixnum n))
- (unless (minusp n) ;; Ignore characters not in the font
- (incf width (the int16 (aref char-infos (index+ 2 n)))))))
- ;; extents
- (do ((i start (index1+ i))
- (width 0)
- (ascent #x-7fff)
- (descent #x-7fff)
- (left #x7fff)
- (right #x-7fff))
- ((index>= i end)
- (values width ascent descent left right))
- (declare (type array-index i)
- (type int16 ascent descent)
- (type int32 width left right))
- (let ((n (char-info-elt sequence i)))
- (declare (type fixnum n))
- (unless (minusp n) ;; Ignore characters not in the font
- (setq left (min left (+ width (aref char-infos n))))
- (setq right (max right (+ width (aref char-infos (index1+ n)))))
- (incf width (aref char-infos (index+ 2 n)))
- (setq ascent (max ascent (aref char-infos (index+ 3 n))))
- (setq descent (max descent (aref char-infos (index+ 4 n)))))
- ))))
- )))))
-
- ;;-----------------------------------------------------------------------------
-
- ;; This controls the element size of the dst buffer given to translate. If
- ;; :default is specified, the size will be based on the current font, if known,
- ;; and otherwise 16 will be used. [An alternative would be to pass the buffer
- ;; size to translate, and allow it to return the desired size if it doesn't
- ;; like the current size. The problem is that the protocol doesn't allow
- ;; switching within a single request, so to allow switching would require
- ;; knowing the width of text, which isn't necessarily known. We could call
- ;; text-width to compute it, but perhaps that is doing too many favors?] [An
- ;; additional possibility is to allow an index-size of :two-byte, in which case
- ;; translate would be given a double-length 8-bit array, and translate would be
- ;; expected to store first-byte/second-byte instead of 16-bit integers.]
-
- (deftype index-size () '(member :default 8 16))
-
- ;; In the functions below, if width is specified, it is assumed to be the total
- ;; pixel width of whatever string of glyphs is actually drawn. Specifying
- ;; width will allow for appending the output of subsequent calls to the same
- ;; protocol request, provided gcontext has not been modified in the interim.
- ;; If width is not specified, appending of subsequent output might not occur
- ;; (unless translate returns the width). Specifying width is simply a hint,
- ;; for performance.
-
- (defun draw-glyph (drawable gcontext x y elt
- &key translate width (size :default))
- ;; Returns true if elt is output, nil if translate refuses to output it.
- ;; Second result is width, if known.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type (or null int32) width)
- (type index-size size))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg #+Genera * #-Genera translate))
- (declare (values boolean (or null int32)))
- (let* ((display (gcontext-display gcontext))
- (result t)
- (opcode *x-polytext8*))
- (declare (type display display))
- (let ((vector (allocate-gcontext-state)))
- (declare (type gcontext-state vector))
- (setf (aref vector 0) elt)
- (multiple-value-bind (new-start new-font translate-width)
- (funcall (or translate #'translate-default)
- vector 0 1 (gcontext-font gcontext t) vector 1)
- ;; Allow translate to set a new font
- (when (type? new-font 'font)
- (setf (gcontext-font gcontext) new-font)
- (multiple-value-setq (new-start new-font translate-width)
- (funcall translate vector 0 1 new-font vector 1)))
- ;; If new-start is zero, translate refuses to output it
- (setq result (index-plusp new-start)
- elt (aref vector 1))
- (deallocate-gcontext-state vector)
- (when translate-width (setq width translate-width))))
- (when result
- (when (eql size 16)
- (setq opcode *x-polytext16*)
- (setq elt (dpb elt (byte 8 8) (ldb (byte 8 8) elt))))
- (with-buffer-request (display opcode :gc-force gcontext)
- (drawable drawable)
- (gcontext gcontext)
- (int16 x y)
- (card8 1 0)
- (card8 (ldb (byte 8 0) elt))
- (card8 (ldb (byte 8 8) elt)))
- (values t width))))
-
- (defun draw-glyphs (drawable gcontext x y sequence
- &key (start 0) end translate width (size :default))
- ;; First result is new start, if end was not reached. Second result is
- ;; overall width, if known.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type array-index start)
- (type sequence sequence)
- (type (or null array-index) end)
- (type (or null int32) width)
- (type index-size size))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg #+Genera * #-Genera translate))
- (declare (values (or null array-index) (or null int32)))
- (unless end (setq end (length sequence)))
- (ecase size
- ((:default 8) (draw-glyphs8 drawable gcontext x y sequence start end
- (or translate #'translate-default) width))
- (16 (draw-glyphs16 drawable gcontext x y sequence start end
- (or translate #'translate-default) width))))
-
- (defun draw-glyphs8 (drawable gcontext x y sequence start end translate width)
- ;; First result is new start, if end was not reached. Second result is
- ;; overall width, if known.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type array-index start)
- (type sequence sequence)
- (type (or null array-index) end)
- (type (or null int32) width))
- (declare (values (or null array-index) (or null int32)))
- (declare (type translation-function translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg translate))
- (let* ((src-start start)
- (src-end (or end (length sequence)))
- (next-start nil)
- (length (index- src-end src-start))
- (request-length (* length 2)) ; Leave lots of room for font shifts.
- (display (gcontext-display gcontext))
- ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
- (font (gcontext-font gcontext t)))
- (declare (type array-index src-start src-end length)
- (type (or null array-index) next-start)
- (type display display))
- (with-buffer-request (display *x-polytext8* :gc-force gcontext :length request-length)
- (drawable drawable)
- (gcontext gcontext)
- (int16 x y)
- (progn
- ;; Don't let any flushes happen since we manually set the request
- ;; length when we're done.
- (with-buffer-flush-inhibited (display)
- (do* ((boffset (index+ buffer-boffset 16))
- (src-chunk 0)
- (dst-chunk 0)
- (offset 0)
- (overall-width 0)
- (stop-p nil))
- ((or stop-p (zerop length))
- ;; Ensure terminated with zero bytes
- (do ((end (the array-index (lround boffset))))
- ((index>= boffset end))
- (setf (aref buffer-bbuf boffset) 0)
- (index-incf boffset))
- (length-put 2 (index-ash (index- boffset buffer-boffset) -2))
- (setf (buffer-boffset display) boffset)
- (unless (index-zerop length) (setq next-start src-start))
- (when overall-width (setq width overall-width)))
-
- (declare (type array-index src-chunk dst-chunk offset)
- (type (or null int32) overall-width)
- (type boolean stop-p))
- (setq src-chunk (index-min length *max-string-size*))
- (multiple-value-bind (new-start new-font translated-width)
- (funcall translate
- sequence src-start (index+ src-start src-chunk)
- font buffer-bbuf (index+ boffset 2))
- (setq dst-chunk (index- new-start src-start)
- length (index- length dst-chunk)
- src-start new-start)
- (if translated-width
- (when overall-width (incf overall-width translated-width))
- (setq overall-width nil))
- (when (index-plusp dst-chunk)
- (setf (aref buffer-bbuf boffset) dst-chunk)
- (setf (aref buffer-bbuf (index+ boffset 1)) offset)
- (incf boffset (index+ dst-chunk 2)))
- (setq offset 0)
- (cond ((null new-font)
- ;; Don't stop if translate copied whole chunk
- (unless (index= src-chunk dst-chunk)
- (setq stop-p t)))
- ((integerp new-font) (setq offset new-font))
- ((type? new-font 'font)
- (setq font new-font)
- (let ((font-id (font-id font))
- (buffer-boffset boffset))
- (declare (type resource-id font-id)
- (type array-index buffer-boffset))
- ;; This changes the gcontext font in the server
- ;; Update the gcontext cache (both local and server state)
- (let ((local-state (gcontext-local-state gcontext))
- (server-state (gcontext-server-state gcontext)))
- (declare (type gcontext-state local-state server-state))
- (setf (gcontext-internal-font-obj server-state) font
- (gcontext-internal-font server-state) font-id)
- (without-interrupts
- (setf (gcontext-internal-font-obj local-state) font
- (gcontext-internal-font local-state) font-id)))
- (card8-put 0 #xff)
- (card8-put 1 (ldb (byte 8 24) font-id))
- (card8-put 2 (ldb (byte 8 16) font-id))
- (card8-put 3 (ldb (byte 8 8) font-id))
- (card8-put 4 (ldb (byte 8 0) font-id)))
- (index-incf boffset 5)))
- )))))
- (values next-start width)))
-
- ;; NOTE: After the first font change by the TRANSLATE function, characters are no-longer
- ;; on 16bit boundaries and this function garbles the bytes.
- (defun draw-glyphs16 (drawable gcontext x y sequence start end translate width)
- ;; First result is new start, if end was not reached. Second result is
- ;; overall width, if known.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type array-index start)
- (type sequence sequence)
- (type (or null array-index) end)
- (type (or null int32) width))
- (declare (values (or null array-index) (or null int32)))
- (declare (type translation-function translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg translate))
- (let* ((src-start start)
- (src-end (or end (length sequence)))
- (next-start nil)
- (length (index- src-end src-start))
- (request-length (* length 3)) ; Leave lots of room for font shifts.
- (display (gcontext-display gcontext))
- ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
- (font (gcontext-font gcontext t))
- (buffer (display-tbuf16 display)))
- (declare (type array-index src-start src-end length)
- (type (or null array-index) next-start)
- (type display display)
- (type buffer-text16 buffer))
- (with-buffer-request (display *x-polytext16* :gc-force gcontext :length request-length)
- (drawable drawable)
- (gcontext gcontext)
- (int16 x y)
- (progn
- ;; Don't let any flushes happen since we manually set the request
- ;; length when we're done.
- (with-buffer-flush-inhibited (display)
- (do* ((boffset (index+ buffer-boffset 16))
- (src-chunk 0)
- (dst-chunk 0)
- (offset 0)
- (overall-width 0)
- (stop-p nil))
- ((or stop-p (zerop length))
- ;; Ensure terminated with zero bytes
- (do ((end (lround boffset)))
- ((index>= boffset end))
- (setf (aref buffer-bbuf boffset) 0)
- (index-incf boffset))
- (length-put 2 (index-ash (index- boffset buffer-boffset) -2))
- (setf (buffer-boffset display) boffset)
- (unless (zerop length) (setq next-start src-start))
- (when overall-width (setq width overall-width)))
-
- (declare (type array-index boffset src-chunk dst-chunk offset)
- (type (or null int32) overall-width)
- (type boolean stop-p))
- (setq src-chunk (index-min length *max-string-size*))
- (multiple-value-bind (new-start new-font translated-width)
- (funcall translate
- sequence src-start (index+ src-start src-chunk)
- font buffer 0)
- (setq dst-chunk (index- new-start src-start)
- length (index- length dst-chunk)
- src-start new-start)
- (write-sequence-char2b display (index+ boffset 2) buffer 0 dst-chunk)
- (if translated-width
- (when overall-width (incf overall-width translated-width))
- (setq overall-width nil))
- (when (index-plusp dst-chunk)
- (setf (aref buffer-bbuf boffset) dst-chunk)
- (setf (aref buffer-bbuf (index+ boffset 1)) offset)
- (index-incf boffset (index+ dst-chunk dst-chunk 2)))
- (setq offset 0)
- (cond ((null new-font)
- ;; Don't stop if translate copied whole chunk
- (unless (index= src-chunk dst-chunk)
- (setq stop-p t)))
- ((integerp new-font) (setq offset new-font))
- ((type? new-font 'font)
- (setq font new-font)
- (let ((font-id (font-id font))
- (buffer-boffset boffset))
- (declare (type resource-id font-id)
- (type array-index buffer-boffset))
- ;; This changes the gcontext font in the SERVER
- ;; Update the gcontext cache (both local and server state)
- (let ((local-state (gcontext-local-state gcontext))
- (server-state (gcontext-server-state gcontext)))
- (declare (type gcontext-state local-state server-state))
- (setf (gcontext-internal-font-obj server-state) font
- (gcontext-internal-font server-state) font-id)
- (without-interrupts
- (setf (gcontext-internal-font-obj local-state) font
- (gcontext-internal-font local-state) font-id)))
- (card8-put 0 #xff)
- (card8-put 1 (ldb (byte 8 24) font-id))
- (card8-put 2 (ldb (byte 8 16) font-id))
- (card8-put 3 (ldb (byte 8 8) font-id))
- (card8-put 4 (ldb (byte 8 0) font-id)))
- (index-incf boffset 5)))
- )))))
- (values next-start width)))
-
- (defun draw-image-glyph (drawable gcontext x y elt
- &key translate width (size :default))
- ;; Returns true if elt is output, nil if translate refuses to output it.
- ;; Second result is overall width, if known. An initial font change is
- ;; allowed from translate.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type (or null int32) width)
- (type index-size size))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg #+Genera * #-Genera translate))
- (declare (values boolean (or null int32)))
- (let* ((display (gcontext-display gcontext))
- (result t)
- (opcode *x-imagetext8*))
- (declare (type display display))
- (let ((vector (allocate-gcontext-state)))
- (declare (type gcontext-state vector))
- (setf (aref vector 0) elt)
- (multiple-value-bind (new-start new-font translate-width)
- (funcall (or translate #'translate-default)
- vector 0 1 (gcontext-font gcontext t) vector 1)
- ;; Allow translate to set a new font
- (when (type? new-font 'font)
- (setf (gcontext-font gcontext) new-font)
- (multiple-value-setq (new-start new-font translate-width)
- (funcall translate vector 0 1 new-font vector 1)))
- ;; If new-start is zero, translate refuses to output it
- (setq result (index-plusp new-start)
- elt (aref vector 1))
- (deallocate-gcontext-state vector)
- (when translate-width (setq width translate-width))))
- (when result
- (when (eql size 16)
- (setq opcode *x-imagetext16*)
- (setq elt (dpb elt (byte 8 8) (ldb (byte 8 8) elt))))
- (with-buffer-request (display opcode :gc-force gcontext)
- (drawable drawable)
- (gcontext gcontext)
- (data 1) ;; 1 character
- (int16 x y)
- (card8 (ldb (byte 8 0) elt))
- (card8 (ldb (byte 8 8) elt)))
- (values t width))))
-
- (defun draw-image-glyphs (drawable gcontext x y sequence
- &key (start 0) end translate width (size :default))
- ;; An initial font change is allowed from translate, but any subsequent font
- ;; change or horizontal motion will cause termination (because the protocol
- ;; doesn't support chaining). [Alternatively, font changes could be accepted
- ;; as long as they are accompanied with a width return value, or always
- ;; accept font changes and call text-width as required. However, horizontal
- ;; motion can't really be accepted, due to semantics.] First result is new
- ;; start, if end was not reached. Second result is overall width, if known.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type array-index start)
- (type (or null array-index) end)
- (type sequence sequence)
- (type (or null int32) width)
- (type index-size size))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg #+Genera * #-Genera translate))
- (declare (values (or null array-index) (or null int32)))
- (setf end (index-min (index+ start 255) (or end (length sequence))))
- (ecase size
- ((:default 8)
- (draw-image-glyphs8 drawable gcontext x y sequence start end translate width))
- (16
- (draw-image-glyphs16 drawable gcontext x y sequence start end translate width))))
-
- (defun draw-image-glyphs8 (drawable gcontext x y sequence start end translate width)
- ;; An initial font change is allowed from translate, but any subsequent font
- ;; change or horizontal motion will cause termination (because the protocol
- ;; doesn't support chaining). [Alternatively, font changes could be accepted
- ;; as long as they are accompanied with a width return value, or always
- ;; accept font changes and call text-width as required. However, horizontal
- ;; motion can't really be accepted, due to semantics.] First result is new
- ;; start, if end was not reached. Second result is overall width, if known.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type array-index start)
- (type sequence sequence)
- (type (or null array-index) end)
- (type (or null int32) width))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg translate))
- (declare (values (or null array-index) (or null int32)))
- (do* ((display (gcontext-display gcontext))
- (length (index- end start))
- ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
- (font (gcontext-font gcontext t))
- (font-change nil)
- (new-start) (translated-width) (chunk))
- (nil) ;; forever
- (declare (type display display)
- (type array-index length)
- (type (or null array-index) new-start chunk))
-
- (when font-change
- (setf (gcontext-font gcontext) font))
- (block change-font
- (with-buffer-request (display *x-imagetext8* :gc-force gcontext :length length)
- (drawable drawable)
- (gcontext gcontext)
- (int16 x y)
- (progn
- ;; Don't let any flushes happen since we manually set the request
- ;; length when we're done.
- (with-buffer-flush-inhibited (display)
- ;; Translate the sequence into the buffer
- (multiple-value-setq (new-start font translated-width)
- (funcall (or translate #'translate-default) sequence start end
- font buffer-bbuf (index+ buffer-boffset 16)))
- ;; Number of glyphs translated
- (setq chunk (index- new-start start))
- ;; Check for initial font change
- (when (and (index-zerop chunk) (type? font 'font))
- (setq font-change t) ;; Loop around changing font
- (return-from change-font))
- ;; Quit when nothing translated
- (when (index-zerop chunk)
- (return-from draw-image-glyphs8 new-start))
- ;; Update buffer pointers
- (data-put 1 chunk)
- (let ((blen (lround (index+ 16 chunk))))
- (length-put 2 (index-ash blen -2))
- (setf (buffer-boffset display) (index+ buffer-boffset blen))))))
- ;; Normal exit
- (return-from draw-image-glyphs8
- (values (if (index= chunk length) nil new-start)
- (or translated-width width))))))
-
- (defun draw-image-glyphs16 (drawable gcontext x y sequence start end translate width)
- ;; An initial font change is allowed from translate, but any subsequent font
- ;; change or horizontal motion will cause termination (because the protocol
- ;; doesn't support chaining). [Alternatively, font changes could be accepted
- ;; as long as they are accompanied with a width return value, or always
- ;; accept font changes and call text-width as required. However, horizontal
- ;; motion can't really be accepted, due to semantics.] First result is new
- ;; start, if end was not reached. Second result is overall width, if known.
- (declare (type drawable drawable)
- (type gcontext gcontext)
- (type int16 x y)
- (type array-index start)
- (type sequence sequence)
- (type (or null array-index) end)
- (type (or null int32) width))
- (declare (type (or null translation-function) translate)
- #+clx-ansi-common-lisp
- (dynamic-extent translate)
- #+(and lispm (not clx-ansi-common-lisp))
- (sys:downward-funarg translate))
- (declare (values (or null array-index) (or null int32)))
- (do* ((display (gcontext-display gcontext))
- (length (index- end start))
- ;; Should metrics-p be T? Don't want to pass a NIL font into translate...
- (font (gcontext-font gcontext t))
- (font-change nil)
- (new-start) (translated-width) (chunk)
- (buffer (buffer-tbuf16 display)))
- (nil) ;; forever
-
- (declare (type display display)
- (type array-index length)
- (type (or null array-index) new-start chunk)
- (type buffer-text16 buffer))
- (when font-change
- (setf (gcontext-font gcontext) font))
-
- (block change-font
- (with-buffer-request (display *x-imagetext16* :gc-force gcontext :length length)
- (drawable drawable)
- (gcontext gcontext)
- (int16 x y)
- (progn
- ;; Don't let any flushes happen since we manually set the request
- ;; length when we're done.
- (with-buffer-flush-inhibited (display)
- ;; Translate the sequence into the buffer
- (multiple-value-setq (new-start font translated-width)
- (funcall (or translate #'translate-default) sequence start end
- font buffer 0))
- ;; Number of glyphs translated
- (setq chunk (index- new-start start))
- ;; Check for initial font change
- (when (and (index-zerop chunk) (type? font 'font))
- (setq font-change t) ;; Loop around changing font
- (return-from change-font))
- ;; Quit when nothing translated
- (when (index-zerop chunk)
- (return-from draw-image-glyphs16 new-start))
- (write-sequence-char2b display (index+ buffer-boffset 16) buffer 0 chunk)
- ;; Update buffer pointers
- (data-put 1 chunk)
- (let ((blen (lround (index+ 16 (index-ash chunk 1)))))
- (length-put 2 (index-ash blen -2))
- (setf (buffer-boffset display) (index+ buffer-boffset blen))))))
- ;; Normal exit
- (return-from draw-image-glyphs16
- (values (if (index= chunk length) nil new-start)
- (or translated-width width))))))
-
-
- ;;-----------------------------------------------------------------------------
-
- (defun display-keycode-range (display)
- (declare (type display display))
- (declare (values min max))
- (values (display-min-keycode display)
- (display-max-keycode display)))
-
- ;; Should this signal device-busy like the pointer-mapping setf, and return a
- ;; boolean instead (true for success)? Alternatively, should the
- ;; pointer-mapping setf be changed to set-pointer-mapping with a (member
- ;; :success :busy) result?
-
- (defun set-modifier-mapping (display &key shift lock control mod1 mod2 mod3 mod4 mod5)
- ;; Setf ought to allow multiple values.
- (declare (type display display)
- (type sequence shift lock control mod1 mod2 mod3 mod4 mod5))
- (declare (values (member :success :busy :failed)))
- (let* ((keycodes-per-modifier (index-max (length shift)
- (length lock)
- (length control)
- (length mod1)
- (length mod2)
- (length mod3)
- (length mod4)
- (length mod5)))
- (data (make-array (index* 8 keycodes-per-modifier)
- :element-type 'card8
- :initial-element 0)))
- (replace data shift)
- (replace data lock :start1 keycodes-per-modifier)
- (replace data control :start1 (index* 2 keycodes-per-modifier))
- (replace data mod1 :start1 (index* 3 keycodes-per-modifier))
- (replace data mod2 :start1 (index* 4 keycodes-per-modifier))
- (replace data mod3 :start1 (index* 5 keycodes-per-modifier))
- (replace data mod4 :start1 (index* 6 keycodes-per-modifier))
- (replace data mod5 :start1 (index* 7 keycodes-per-modifier))
- (with-buffer-request-and-reply (display *x-setmodifiermapping* 4 :sizes 8)
- ((data keycodes-per-modifier)
- ((sequence :format card8) data))
- (values (member8-get 1 :success :busy :failed)))))
-
- (defun modifier-mapping (display)
- ;; each value is a list of integers
- (declare (type display display))
- (declare (values shift lock control mod1 mod2 mod3 mod4 mod5))
- (let ((lists nil))
- (with-buffer-request-and-reply (display *x-getmodifiermapping* nil :sizes 8)
- ()
- (do* ((keycodes-per-modifier (card8-get 1))
- (advance-by *replysize* keycodes-per-modifier)
- (keys nil nil)
- (i 0 (index+ i 1)))
- ((index= i 8))
- (advance-buffer-offset advance-by)
- (dotimes (j keycodes-per-modifier)
- (let ((key (read-card8 j)))
- (unless (zerop key)
- (push key keys))))
- (push (nreverse keys) lists)))
- (values-list (nreverse lists))))
-
- ;; Either we will want lots of defconstants for well-known values, or perhaps
- ;; an integer-to-keyword translation function for well-known values.
-
- (defun change-keyboard-mapping
- (display keysyms &key (start 0) end (first-keycode start))
- ;; start/end give subrange of keysyms
- ;; first-keycode is the first-keycode to store at
- (declare (type display display)
- (type array-index start)
- (type card8 first-keycode)
- (type (or null array-index) end)
- (type (array * (* *)) keysyms))
- (let* ((keycode-end (or end (array-dimension keysyms 0)))
- (keysyms-per-keycode (array-dimension keysyms 1))
- (length (index- keycode-end start))
- (size (index* length keysyms-per-keycode))
- (request-length (index+ size 2)))
- (declare (type array-index keycode-end keysyms-per-keycode length request-length))
- (with-buffer-request (display *x-setkeyboardmapping*
- :length (index-ash request-length 2)
- :sizes (32))
- (data length)
- (length request-length)
- (card8 first-keycode keysyms-per-keycode)
- (progn
- (do ((limit (index-ash (buffer-size display) -2))
- (w (index+ 2 (index-ash buffer-boffset -2)))
- (i start (index+ i 1)))
- ((index>= i keycode-end)
- (setf (buffer-boffset display) (index-ash w 2)))
- (declare (type array-index limit w i))
- (when (index> w limit)
- (buffer-flush display)
- (setq w (index-ash (buffer-boffset display) -2)))
- (do ((j 0 (index+ j 1)))
- ((index>= j keysyms-per-keycode))
- (declare (type array-index j))
- (card29-put (index* w 4) (aref keysyms i j))
- (index-incf w)))))))
-
- (defun keyboard-mapping (display &key first-keycode start end data)
- ;; First-keycode specifies which keycode to start at (defaults to min-keycode).
- ;; Start specifies where (in result) to put first-keycode. (defaults to first-keycode)
- ;; (- end start) is the number of keycodes to get. (End defaults to (1+ max-keycode)).
- ;; If DATA is specified, the results are put there.
- (declare (type display display)
- (type (or null card8) first-keycode)
- (type (or null array-index) start end)
- (type (or null (array * (* *))) data))
- (declare (values (array * (* *))))
- (unless first-keycode (setq first-keycode (display-min-keycode display)))
- (unless start (setq start first-keycode))
- (unless end (setq end (1+ (display-max-keycode display))))
- (with-buffer-request-and-reply (display *x-getkeyboardmapping* nil :sizes (8 32))
- ((card8 first-keycode (index- end start)))
- (do* ((keysyms-per-keycode (card8-get 1))
- (bytes-per-keycode (* keysyms-per-keycode 4))
- (advance-by *replysize* bytes-per-keycode)
- (keycode-count (floor (card32-get 4) keysyms-per-keycode)
- (index- keycode-count 1))
- (result (if (and (arrayp data)
- (= (array-rank data) 2)
- (>= (array-dimension data 0) (index+ start keycode-count))
- (>= (array-dimension data 1) keysyms-per-keycode))
- data
- (make-array `(,(index+ start keycode-count) ,keysyms-per-keycode)
- :element-type 'keysym :initial-element 0)))
- (i start (1+ i)))
- ((zerop keycode-count) (setq data result))
- (advance-buffer-offset advance-by)
- (dotimes (j keysyms-per-keycode)
- (setf (aref result i j) (card29-get (* j 4))))))
- data)
-