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- ;;; w3-display.el --- display engine v99999
- ;; Author: wmperry
- ;; Created: 1997/12/23 22:13:08
- ;; Version: 1.216
- ;; Keywords: faces, help, hypermedia
-
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;; Copyright (c) 1996 by William M. Perry <wmperry@cs.indiana.edu>
- ;;; Copyright (c) 1996, 1997 Free Software Foundation, Inc.
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;
- ;;; This file is part of GNU Emacs.
- ;;;
- ;;; GNU Emacs is free software; you can redistribute it and/or modify
- ;;; it under the terms of the GNU General Public License as published by
- ;;; the Free Software Foundation; either version 2, or (at your option)
- ;;; any later version.
- ;;;
- ;;; GNU Emacs is distributed in the hope that it will be useful,
- ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
- ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- ;;; GNU General Public License for more details.
- ;;;
- ;;; You should have received a copy of the GNU General Public License
- ;;; along with GNU Emacs; see the file COPYING. If not, write to the
- ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;;; Boston, MA 02111-1307, USA.
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- (require 'cl)
- (eval-when-compile
- (require 'w3-props))
- (require 'w3-keyword)
- (require 'css)
- (require 'font)
- (require 'w3-widget)
- (require 'w3-imap)
-
- (autoload 'sentence-ify "flame")
- (autoload 'string-ify "flame")
- (autoload '*flame "flame")
- (if (not (fboundp 'flatten)) (autoload 'flatten "flame"))
- (defvar w3-cookie-cache nil)
-
- (defmacro w3-d-s-var-def (var)
- (` (make-variable-buffer-local (defvar (, var) nil))))
-
- (w3-d-s-var-def w3-display-label-marker)
- (w3-d-s-var-def w3-display-open-element-stack)
- (w3-d-s-var-def w3-display-alignment-stack)
- (w3-d-s-var-def w3-display-list-stack)
- (w3-d-s-var-def w3-display-form-id)
- (w3-d-s-var-def w3-display-whitespace-stack)
- (w3-d-s-var-def w3-display-liststyle-stack)
- (w3-d-s-var-def w3-display-font-family-stack)
- (w3-d-s-var-def w3-display-font-weight-stack)
- (w3-d-s-var-def w3-display-font-variant-stack)
- (w3-d-s-var-def w3-display-font-size-stack)
- (w3-d-s-var-def w3-face-color)
- (w3-d-s-var-def w3-face-background-color)
- (w3-d-s-var-def w3-active-faces)
- (w3-d-s-var-def w3-active-voices)
- (w3-d-s-var-def w3-current-form-number)
- (w3-d-s-var-def w3-face-font-family)
- (w3-d-s-var-def w3-face-font-weight)
- (w3-d-s-var-def w3-face-font-variant)
- (w3-d-s-var-def w3-face-font-size)
- (w3-d-s-var-def w3-face-font-family)
- (w3-d-s-var-def w3-face-font-size)
- (w3-d-s-var-def w3-face-font-style)
- (w3-d-s-var-def w3-face-font-spec)
- (w3-d-s-var-def w3-face-text-decoration)
- (w3-d-s-var-def w3-face-face)
- (w3-d-s-var-def w3-face-descr)
- (w3-d-s-var-def w3-face-background-image)
- (w3-d-s-var-def w3-display-css-properties)
- (w3-d-s-var-def w3-display-background-properties)
-
- (eval-when-compile
- (defmacro w3-get-attribute (attr)
- (` (cdr-safe (assq (, attr) args))))
-
- (defmacro w3-get-face-info (info &optional other)
- (let ((var (intern (format "w3-face-%s" info))))
- (` (push (w3-get-style-info (quote (, info)) node
- (or (and (not w3-user-colors-take-precedence)
- (cdr-safe (assq (quote (, other))
- (nth 1 node))))
- (car (, var))))
- (, var)))))
-
- (defmacro w3-pop-face-info (info)
- (let ((var (intern (format "w3-face-%s" info))))
- (` (pop (, var)))))
-
- (defmacro w3-get-all-face-info ()
- (`
- (progn
- (w3-get-face-info font-family)
- ;; This is to handle the 'face' attribute on arbitrary elements
- (if (cdr-safe (assq 'face (nth 1 node)))
- (setf (car w3-face-font-family)
- (append (car w3-face-font-family)
- (split-string (cdr-safe
- (assq 'face (nth 1 node)))
- " *, *"))))
- (w3-get-face-info font-style)
- (w3-get-face-info font-weight)
- (w3-get-face-info font-variant)
- (w3-get-face-info font-size)
- (w3-get-face-info text-decoration)
- (w3-get-face-info background-image)
- (w3-get-face-info color color)
- (w3-get-face-info background-color bgcolor)
- (setq w3-face-font-spec (make-font
- :weight (car w3-face-font-weight)
- :family (car w3-face-font-family)
- :size (car w3-face-font-size))))))
-
- (defmacro w3-pop-all-face-info ()
- (`
- (progn
- (w3-pop-face-info font-family)
- (w3-pop-face-info font-weight)
- (w3-pop-face-info font-variant)
- (w3-pop-face-info font-size)
- (w3-pop-face-info font-style)
- (w3-pop-face-info text-decoration)
- (w3-pop-face-info background-image)
- (w3-pop-face-info color)
- (w3-pop-face-info background-color))))
-
- )
-
- (defvar w3-display-same-buffer nil)
- (defvar w3-face-cache nil "Cache for w3-face-for-element")
- (defvar w3-face-index 0)
- (defvar w3-image-widgets-waiting nil)
-
- (make-variable-buffer-local 'w3-last-fill-pos)
-
- (defconst w3-fill-prefixes-vector
- (let ((len 0)
- (prefix-vector (make-vector 80 nil)))
- (while (< len 80)
- (aset prefix-vector len (make-string len ? ))
- (setq len (1+ len)))
- prefix-vector))
-
- (defconst w3-line-breaks-vector
- (let ((len 0)
- (breaks-vector (make-vector 10 nil)))
- (while (< len 10)
- (aset breaks-vector len (make-string len ?\n))
- (setq len (1+ len)))
- breaks-vector))
-
- (defvar w3-pause-keystroke nil)
-
- (defsubst w3-pause ()
- (declare (special cur-viewing-pos))
- (save-excursion
- (goto-char (or cur-viewing-pos (point-min)))
- (cond
- (w3-running-xemacs
- (if (and (not (sit-for 0)) (input-pending-p))
- (condition-case ()
- (dispatch-event (next-command-event))
- (error nil))))
- (t
- (if (and (not (sit-for 0)) (input-pending-p))
- (condition-case ()
- (progn
- (setq w3-pause-keystroke
- (lookup-key w3-mode-map (vector (read-event))))
- (case w3-pause-keystroke
- ((w3-quit w3-leave-buffer) nil)
- (otherwise
- (call-interactively w3-pause-keystroke))))
- (error nil)))))
- (setq cur-viewing-pos (point))))
-
- (defmacro w3-get-pad-string (len)
- (` (cond
- ((< (, len) 0)
- "")
- ((< (, len) 80)
- (aref w3-fill-prefixes-vector (, len)))
- (t (make-string (, len) ? )))))
-
- (defsubst w3-set-fill-prefix-length (len)
- (setq fill-prefix (if (< len (- (or w3-strict-width (window-width)) 4))
- (w3-get-pad-string len)
- (url-warn
- 'html
- "Runaway indentation! Too deep for window width!")
- fill-prefix)))
-
- (defsubst w3-get-style-info (info node &optional default)
- (or (cdr-safe (assq info w3-display-css-properties)) default))
-
- (defun w3-decode-area-coords (str)
- (let (retval)
- (while (string-match "\\([ \t0-9]+\\),\\([ \t0-9]+\\)" str)
- (setq retval (cons (vector (string-to-int (match-string 1 str))
- (string-to-int (match-string 2 str))) retval)
- str (substring str (match-end 0) nil)))
- (if (string-match "\\([0-9]+\\)" str)
- (setq retval (cons (vector (+ (aref (car retval) 0)
- (string-to-int (match-string 1 str)))
- (aref (car retval) 1)) retval)))
- (nreverse retval)))
-
- (defun w3-normalize-color (color)
- (cond
- ((valid-color-name-p color)
- color)
- ((valid-color-name-p (concat "#" color))
- (concat "#" color))
- ((string-match "[ \t\r\n]" color)
- (w3-normalize-color
- (mapconcat (function (lambda (x) (if (memq x '(?\t ?\r ?\n ? )) ""
- (char-to-string x)))) color "")))
- ((valid-color-name-p (font-normalize-color color))
- (font-normalize-color color))
- (t
- (w3-warn 'html (format "Bad color specification: %s" color))
- nil)))
-
- (defsubst w3-voice-for-element (node)
- (if (featurep 'emacspeak)
- (let (family gain left right pitch pitch-range stress richness voice)
- (setq family (w3-get-style-info 'voice-family node)
- gain (w3-get-style-info 'gain node)
- left (w3-get-style-info 'left-volume node)
- right (w3-get-style-info 'right-volume node)
- pitch (w3-get-style-info 'pitch node)
- pitch-range (w3-get-style-info 'pitch-range node)
- stress (w3-get-style-info 'stress node)
- richness (w3-get-style-info 'richness node))
- (if (or family gain left right pitch pitch-range stress richness)
- (setq voice (dtk-personality-from-speech-style
- (make-dtk-speech-style :family (or family 'paul)
- :gain (or gain 5)
- :left-volume (or left 5)
- :right-volume (or right 5)
- :average-pitch (or pitch 5)
- :pitch-range (or pitch-range 5)
- :stress (or stress 5)
- :richness (or richness 5))))
- (setq voice nil))
- (or voice (car w3-active-voices)))))
-
- (defun w3-make-face-emacs19 (name &optional doc-string temporary)
- "Defines and returns a new FACE described by DOC-STRING.
- If the face already exists, it is unmodified."
- (make-face name))
-
- (cond
- ((not (fboundp 'make-face))
- (fset 'w3-make-face 'ignore))
- (w3-running-xemacs
- (fset 'w3-make-face 'make-face))
- (t
- (fset 'w3-make-face 'w3-make-face-emacs19)))
-
- (defsubst w3-face-for-element (node)
- (w3-get-all-face-info)
- (if (car w3-face-text-decoration)
- (set-font-style-by-keywords w3-face-font-spec
- (car w3-face-text-decoration)))
- (if w3-face-font-variant
- (set-font-style-by-keywords w3-face-font-spec
- (car w3-face-font-variant)))
- (if w3-face-font-style
- (set-font-style-by-keywords w3-face-font-spec
- (car w3-face-font-style)))
- (setq w3-face-descr (list w3-face-font-spec
- (car w3-face-background-image)
- (car w3-face-color)
- (car w3-face-background-color))
- w3-face-face (cdr-safe (assoc w3-face-descr w3-face-cache)))
- (if (or w3-face-face (not (or (car w3-face-color)
- (car w3-face-background-image)
- (car w3-face-background-color)
- w3-face-font-spec)))
- nil ; Do nothing, we got it already
- (setq w3-face-face
- (w3-make-face (intern (format "w3-style-face-%05d" w3-face-index))
- "An Emacs-W3 face... don't edit by hand." t)
- w3-face-index (1+ w3-face-index))
- (if (car w3-face-background-image)
- (w3-maybe-start-background-image-download
- (car w3-face-background-image) w3-face-face))
- (if w3-face-font-spec
- (font-set-face-font w3-face-face w3-face-font-spec))
- (if (car w3-face-color)
- (font-set-face-foreground w3-face-face (car w3-face-color)))
- (if (car w3-face-background-color)
- (font-set-face-background w3-face-face (car w3-face-background-color)))
- (setq w3-face-cache (cons
- (cons w3-face-descr w3-face-face)
- w3-face-cache)))
- w3-face-face)
-
- (defun w3-normalize-spaces (string)
- ;; nuke spaces in the middle
- (while (string-match "[ \t\r\n][ \r\t\n]+" string)
- (setq string (concat (substring string 0 (1+ (match-beginning 0)))
- (substring string (match-end 0)))))
-
- ;; nuke spaces at the beginning
- (if (string-match "^[ \t\r\n]+" string)
- (setq string (substring string (match-end 0))))
-
- ;; nuke spaces at the end
- (if (string-match "[ \t\n\r]+$" string)
- (setq string (substring string 0 (match-beginning 0))))
- string)
-
-
- (if (not (fboundp 'char-before))
- (defun char-before (&optional pos)
- (char-after (1- (or pos (point))))))
-
- (defsubst w3-display-line-break (n)
- (if (or
- (memq (car w3-display-whitespace-stack) '(pre nowrap)) ; Been told
- (= w3-last-fill-pos (point))
- (> w3-last-fill-pos (point-max)))
- (if (not (eq (char-before (point)) ?\n))
- (setq n (1+ n))) ; at least put one line in
- (let ((fill-column (max (1+ (length fill-prefix)) fill-column))
- width)
- (case (car w3-display-alignment-stack)
- (center
- (fill-region-as-paragraph w3-last-fill-pos (point))
- (center-region w3-last-fill-pos (point-max)))
- ((justify full)
- (fill-region-as-paragraph w3-last-fill-pos (point) t))
- (right
- (fill-region-as-paragraph w3-last-fill-pos (point))
- (goto-char w3-last-fill-pos)
- (catch 'fill-exit
- (while (re-search-forward ".$" nil t)
- (if (>= (setq width (current-column)) fill-column)
- nil ; already justified, or error
- (beginning-of-line)
- (insert-char ? (- fill-column width) t)
- (end-of-line)
- (if (eobp)
- (throw 'fill-exit t))
- (condition-case ()
- (forward-char 1)
- (error (throw 'fill-exit t))))))
- )
- (otherwise ; Default is left justification
- (fill-region-as-paragraph w3-last-fill-pos (point)))
- ))
- (setq n (1- n)))
- (setq w3-last-fill-pos (point-max))
- (insert (cond
- ((<= n 0) "")
- ((< n 10)
- (aref w3-line-breaks-vector n))
- (t
- (make-string n ?\n)))))
-
- (defsubst w3-munge-line-breaks-p ()
- (eq (car w3-display-whitespace-stack) 'pre))
-
- (defvar w3-display-nil-face (w3-make-face nil "Stub face... don't ask." t))
-
- (defvar w3-scratch-start-point nil)
-
- (defsubst w3-handle-string-content (string)
- (setq w3-scratch-start-point (point))
- (insert string)
- (if (w3-munge-line-breaks-p)
- (progn
- (goto-char w3-scratch-start-point)
- (if (not (search-forward "\n" nil t))
- (subst-char-in-region w3-scratch-start-point (point-max) ?\r ?\n)
- (subst-char-in-region w3-scratch-start-point (point-max) ?\r ? )))
- (goto-char w3-scratch-start-point)
- (while (re-search-forward
- " [ \t\n\r]+\\|[\t\n\r][ \t\n\r]*"
- nil 'move)
- (replace-match " "))
- (goto-char w3-scratch-start-point)
- (if (and (memq (char-before (point)) '(? ?\t ?\r ?\n))
- (looking-at "[ \t\r\n]"))
- (delete-region (point)
- (progn
- (skip-chars-forward " \t\r\n")
- (point)))))
- (goto-char (point-max))
- (add-text-properties w3-scratch-start-point
- (point) (list 'face w3-active-faces
- 'html-stack w3-display-open-element-stack
- 'start-open nil
- 'end-open nil
- 'front-sticky t
- 'rear-nonsticky nil
- 'duplicable t))
- (if (car w3-active-voices)
- (add-text-properties w3-scratch-start-point (point)
- (list 'personality (car w3-active-voices))))
- )
-
- (defun w3-display-get-cookie (args)
- (if (not (fboundp 'cookie))
- "Sorry, no cookies today."
- (let* ((href (or (w3-get-attribute 'href) (w3-get-attribute 'src)))
- (fname (or (cdr-safe (assoc href w3-cookie-cache))
- (url-generate-unique-filename "%s.cki")))
- (st (or (cdr-safe (assq 'start args)) "Loading cookies..."))
- (nd (or (cdr-safe (assq 'end args)) "Loading cookies... done.")))
- (if (not (file-exists-p fname))
- (save-excursion
- (set-buffer (generate-new-buffer " *cookie*"))
- (url-insert-file-contents href)
- (write-region (point-min) (point-max) fname 5)
- (setq w3-cookie-cache (cons (cons href fname) w3-cookie-cache))))
- (cookie fname st nd))))
-
- (defun w3-widget-echo (widget &rest ignore)
- (let* ((url (widget-get widget :href))
- (name (widget-get widget :name))
- (text (buffer-substring-no-properties (widget-get widget :from)
- (widget-get widget :to)))
- (title (widget-get widget :title))
- (check w3-echo-link)
- (msg nil))
- (if url
- (setq url (url-truncate-url-for-viewing url)))
- (if name
- (setq name (concat "anchor:" name)))
- (if (not (listp check))
- (setq check (cons check '(title url text name))))
- (catch 'exit
- (while check
- (and (boundp (car check))
- (stringp (symbol-value (car check)))
- (> (length (symbol-value (car check))) 0)
- (throw 'exit (symbol-value (car check))))
- (pop check)))))
-
- (defun w3-follow-hyperlink (widget &rest ignore)
- (let* ((target (or (widget-get widget :target) w3-base-target))
- (visited (widget-get widget :visited-face))
- (href (widget-get widget :href)))
- (if target (setq target (intern (downcase target))))
- (if visited
- (condition-case ()
- (add-text-properties (widget-get widget :start)
- (widget-get widget :end)
- (list 'face visited))
- (error nil)))
- (case target
- ((_blank external)
- (w3-fetch-other-frame href))
- (_top
- (delete-other-windows)
- (w3-fetch href))
- (otherwise
- (w3-fetch href target)))))
-
- (defun w3-balloon-help-callback (object &optional event)
- (let* ((widget (widget-at (extent-start-position object)))
- (href (widget-get widget :href)))
- (if href
- (url-truncate-url-for-viewing href)
- nil)))
-
-
- ;; Various macros
- (eval-when-compile
- (defmacro w3-node-visible-p ()
- (` (not (eq (car break-style) 'none))))
-
- (defmacro w3-handle-empty-tag ()
- (`
- (progn
- (push (cons tag args) w3-display-open-element-stack)
- (push content content-stack)
- (setq content nil))))
-
- (defmacro w3-handle-content (node)
- (`
- (progn
- (push (cons tag args) w3-display-open-element-stack)
- (push content content-stack)
- (setq content (nth 2 (, node))))))
-
- (defmacro w3-display-handle-list-type ()
- (`
- (add-text-properties
- (point)
- (progn
- (case (car break-style)
- (list-item
- (let ((list-style (or (car w3-display-liststyle-stack) 'disc))
- (list-num (if (car w3-display-list-stack)
- (incf (car w3-display-list-stack))
- 1))
- (margin (1- (car left-margin-stack)))
- (indent (w3-get-style-info 'text-indent node 0)))
- (if (> indent 0)
- (setq margin (+ margin indent))
- (setq margin (max 0 (- margin indent))))
- (beginning-of-line)
- (case list-style
- ((disc circle square)
- (insert (format (format "%%%dc" margin)
- (or (cdr-safe (assq list-style w3-bullets))
- ?o))))
- ((decimal lower-roman upper-roman lower-alpha upper-alpha)
- (let ((x (case list-style
- (lower-roman
- (w3-decimal-to-roman list-num))
- (upper-roman
- (upcase
- (w3-decimal-to-roman list-num)))
- (lower-alpha
- (w3-decimal-to-alpha list-num))
- (upper-alpha
- (upcase
- (w3-decimal-to-alpha list-num)))
- (otherwise
- (int-to-string list-num)))))
- (insert (format (format "%%%ds." margin) x))
- )
- )
- (otherwise
- (insert (w3-get-pad-string margin)))
- )
- )
- )
- (otherwise
- (insert (w3-get-pad-string (+ (car left-margin-stack)
- (w3-get-style-info 'text-indent node 0)))))
- )
- (point))
- (list 'start-open t
- 'end-open t
- 'rear-nonsticky nil
- 'face 'nil))))
-
- (defmacro w3-display-set-margins ()
- (`
- (progn
- (push (+ (w3-get-style-info 'margin-left node 0)
- (car left-margin-stack)) left-margin-stack)
- (push (-
- (car right-margin-stack)
- (w3-get-style-info 'margin-right node 0)) right-margin-stack)
- (setq fill-column (car right-margin-stack))
- (w3-set-fill-prefix-length (car left-margin-stack))
- (w3-display-handle-list-type))))
-
- (defmacro w3-display-restore-margins ()
- (`
- (progn
- (pop right-margin-stack)
- (pop left-margin-stack))))
-
- (defmacro w3-display-handle-break ()
- (`
- (case (car break-style)
- (block ; Full paragraph break
- (if (eq (cadr break-style) 'list-item)
- (setf (cadr break-style) 'line)
- (w3-display-line-break 1))
- (w3-display-set-margins)
- (push
- (w3-get-style-info 'white-space node
- (car w3-display-whitespace-stack))
- w3-display-whitespace-stack)
- (push
- (or (w3-get-attribute 'foobarblatz)
- (w3-get-style-info 'list-style-type node
- (car w3-display-liststyle-stack)))
- w3-display-liststyle-stack)
- (push
- (or (w3-get-attribute 'align)
- (w3-get-style-info 'text-align node
- (car w3-display-alignment-stack)))
- w3-display-alignment-stack)
- (and w3-do-incremental-display (w3-pause)))
- ((line list-item) ; Single line break
- (w3-display-line-break 0)
- (w3-display-set-margins)
- (push
- (or (w3-get-attribute 'foobarblatz)
- (w3-get-style-info 'list-style-type node
- (car w3-display-liststyle-stack)))
- w3-display-liststyle-stack)
- (push
- (w3-get-style-info 'white-space node
- (car w3-display-whitespace-stack))
- w3-display-whitespace-stack)
- (push
- (w3-get-style-info 'text-align node
- (or (w3-get-attribute 'align)
- (car w3-display-alignment-stack)))
- w3-display-alignment-stack))
- (otherwise ; Assume 'inline' rendering as default
- nil))
- )
- )
-
- (defmacro w3-display-progress-meter ()
- (`
- (url-lazy-message "Drawing... %c" (aref "/|\\-" (random 4)))))
-
- (defmacro w3-display-handle-end-break ()
- (`
- (case (pop break-style)
- (block ; Full paragraph break
- (w3-display-line-break 1)
- (w3-display-restore-margins)
- (pop w3-display-whitespace-stack)
- (pop w3-display-liststyle-stack)
- (pop w3-display-alignment-stack)
- (and w3-do-incremental-display (w3-pause)))
- ((line list-item) ; Single line break
- (w3-display-restore-margins)
- (w3-display-line-break 0)
- (pop w3-display-whitespace-stack)
- (pop w3-display-liststyle-stack)
- (pop w3-display-alignment-stack))
- (otherwise ; Assume 'inline' rendering as default
- nil))
- )
- )
- )
-
- ;; <link> handling
- (defun w3-parse-link (args)
- (let* ((type (if (w3-get-attribute 'rel) 'rel 'rev))
- (desc (w3-get-attribute type))
- (dc-desc (and desc (downcase desc))) ; canonical case
- (dest (w3-get-attribute 'href))
- (plist (alist-to-plist args))
- (node-1 (assq type w3-current-links))
- (node-2 (and node-1 desc (or (assoc desc
- (cdr node-1))
- (assoc dc-desc
- (cdr node-1)))))
- )
- ;; Canonicalize the case of link types we may look for
- ;; specifically (toolbar etc.) since that's done with
- ;; assoc. See `w3-mail-document-author' and
- ;; `w3-link-toolbar', at least.
- (if (member dc-desc w3-defined-link-types)
- (setq desc dc-desc))
- (if dest ; ignore if HREF missing
- (cond
- (node-2 ; Add to old value
- (setcdr node-2 (cons plist (cdr node-2))))
- (node-1 ; first rel/rev
- (setcdr node-1 (cons (cons desc (list plist))
- (cdr node-1))))
- (t (setq w3-current-links
- (cons (cons type (list (cons desc (list plist))))
- w3-current-links)))))
- (setq desc (and desc (intern dc-desc)))
- (case desc
- ((style stylesheet)
- (if w3-honor-stylesheets
- (w3-handle-style plist)))
- (otherwise
- )
- )
- )
- )
-
-
- ;; Image handling
- (defun w3-maybe-start-image-download (widget)
- (let* ((src (widget-get widget :src))
- (cached-glyph (w3-image-cached-p src)))
- (cond
- ((and cached-glyph
- (widget-glyphp cached-glyph)
- (not (eq 'nothing
- (condition-case ()
- (image-instance-type
- (glyph-image-instance cached-glyph))
- (error 'nothing)))))
- (setq w3-image-widgets-waiting (cons widget w3-image-widgets-waiting)))
- ((or w3-delay-image-loads ; Delaying images
- (not (fboundp 'valid-specifier-domain-p)) ; Can't do images
- (eq (device-type) 'tty)) ; Why bother?
- (w3-add-delayed-graphic widget))
- ((not (w3-image-loadable-p src nil)) ; Hey, we can't load it!
- (mesage "Skipping image %s" (url-basepath src t))
- (w3-add-delayed-graphic widget))
- (t ; Grab the images
- (let (
- (url-request-method "GET")
- (old-asynch (default-value 'url-be-asynchronous))
- (url-request-data nil)
- (url-request-extra-headers nil)
- (url-source t)
- (url-mime-accept-string (substring
- (mapconcat
- (function
- (lambda (x)
- (if x
- (concat (car x) ",")
- "")))
- w3-allowed-image-types "")
- 0 -1))
- (url-working-buffer (generate-new-buffer-name " *W3GRAPH*")))
- (unwind-protect
- (progn
- (setq-default url-be-asynchronous t)
- (setq w3-graphics-list (cons (cons src (make-glyph))
- w3-graphics-list))
- (save-excursion
- (set-buffer (get-buffer-create url-working-buffer))
- (setq url-current-callback-data (list src (widget-get widget 'buffer)
- widget)
- url-be-asynchronous t
- url-current-callback-func 'w3-finalize-image-download)
- (url-retrieve src)))
- (setq-default url-be-asynchronous old-asynch)))))))
-
- (defun w3-maybe-start-background-image-download (src face)
- (let* ((cached-glyph (w3-image-cached-p src))
- (buf (current-buffer)))
- (cond
- ((and cached-glyph
- (widget-glyphp cached-glyph)
- (not (eq 'nothing
- (image-instance-type
- (glyph-image-instance cached-glyph)))))
- (set-face-background-pixmap face
- (glyph-image-instance cached-glyph) buf))
- ((or (not (fboundp 'valid-specifier-domain-p)) ; Can't do images
- (eq (device-type) 'tty)) ; Why bother?
- nil)
- ((not (w3-image-loadable-p src nil)) ; Hey, we can't load it!
- (mesage "Skipping image %s" (url-basepath src t))
- nil)
- (t ; Grab the images
- (let (
- (url-request-method "GET")
- (old-asynch (default-value 'url-be-asynchronous))
- (url-request-data nil)
- (url-request-extra-headers nil)
- (url-source t)
- (url-mime-accept-string (substring
- (mapconcat
- (function
- (lambda (x)
- (if x
- (concat (car x) ",")
- "")))
- w3-allowed-image-types "")
- 0 -1))
- (url-working-buffer (generate-new-buffer-name " *W3GRAPH*")))
- (unwind-protect
- (progn
- (setq-default url-be-asynchronous t)
- (setq w3-graphics-list (cons (cons src (make-glyph))
- w3-graphics-list))
- (save-excursion
- (set-buffer (get-buffer-create url-working-buffer))
- (setq url-current-callback-data (list src buf 'background face)
- url-be-asynchronous t
- url-current-callback-func 'w3-finalize-image-download)
- (url-retrieve src)))
- (setq-default url-be-asynchronous old-asynch)))))))
-
- (defun w3-finalize-image-download (url buffer &optional widget face)
- (let ((glyph nil)
- (node nil))
- (message "Enhancing image...")
- (setq glyph (image-normalize (cdr-safe (assoc url-current-mime-type
- w3-image-mappings))
- (buffer-string)))
- (message "Enhancing image... done")
- (kill-buffer (current-buffer))
- (cond
- ((w3-image-invalid-glyph-p glyph)
- (setq glyph nil)
- (message "Reading of %s failed." url))
- ((eq (aref glyph 0) 'xbm)
- (let ((temp-fname (url-generate-unique-filename "%s.xbm")))
- (save-excursion
- (set-buffer (generate-new-buffer " *xbm-garbage*"))
- (erase-buffer)
- (insert (aref glyph 2))
- (setq glyph temp-fname)
- (write-region (point-min) (point-max) temp-fname)
- (kill-buffer (current-buffer)))
- (setq glyph (make-glyph (list (cons 'x glyph))))
- (condition-case ()
- (delete-file temp-fname)
- (error nil))))
- (t
- (setq glyph (make-glyph glyph))))
- (setq node (assoc url w3-graphics-list))
- (cond
- ((and node glyph)
- (set-glyph-image (cdr node) (glyph-image glyph)))
- (glyph
- (setq w3-graphics-list (cons (cons url glyph) w3-graphics-list)))
- (t nil))
-
- (cond
- ((or (not buffer)
- (not (widget-glyphp glyph))
- (not (buffer-name buffer)))
- nil)
- ((and (eq widget 'background)
- w3-running-xemacs)
- (set-face-background-pixmap face
- (glyph-image-instance glyph)
- buffer))
- ((not (eq widget 'background))
- (save-excursion
- (set-buffer buffer)
- (if (eq major-mode 'w3-mode)
- (widget-value-set widget glyph)
- (setq w3-image-widgets-waiting
- (cons widget w3-image-widgets-waiting))))))))
-
- (defcustom w3-min-img-size 15
- "*Image size under which the alt string is replaced by `w3-dummy-img-alt-repl'.
- 15 is a bit aggressive, 5 pixels would be safer"
- :group 'w3-images
- :type 'integer
- )
-
- (defcustom w3-dummy-img-re
- "\\b\\(boule\\|bullet\\|dot\\|pebble[0-9]*[a-z]?[0-9]*\\|pixel\\)\\b"
- "Image name regexp for which the alt string is replaced by `w3-dummy-img-alt-repl'."
- :group 'w3-images
- :type 'regexp)
-
- (defcustom w3-dummy-img-alt-repl "* "
- "*Dummy image alt string replacement."
- :group 'w3-images
- :type 'string)
-
- (defun w3-default-image-alt-func (fname)
- ;; Assumes height/width bound by calling function
- (declare (special height width))
- (if (or (and (stringp height)
- (< (string-to-int height) w3-min-img-size))
- (and (stringp width)
- (< (string-to-int width) w3-min-img-size))
- (string-match w3-dummy-img-re fname))
- w3-dummy-img-alt-repl
- (concat "[" (file-name-sans-extension fname) "]")))
-
- (defmacro w3-image-alt (src)
- (`
- (let* ((doc-alt (w3-get-attribute 'alt))
- (alt (or (and doc-alt
- (not (string-equal doc-alt ""))
- doc-alt)
- (cond
- ((null w3-auto-image-alt) "")
- ((eq t w3-auto-image-alt)
- (concat "[IMAGE(" (url-basepath src t) ")] "))
- ((stringp w3-auto-image-alt)
- (format w3-auto-image-alt (url-basepath src t)))
- ((functionp w3-auto-image-alt)
- (funcall w3-auto-image-alt (url-basepath src t))))))
- c)
- (while (setq c (string-match "[\C-i\C-j\C-l\C-m]" alt))
- (aset alt c ? ))
- alt)))
-
- (defmacro w3-handle-image ()
- (`
- (let* ((height (w3-get-attribute 'height))
- (width (w3-get-attribute 'width))
- (src (or (w3-get-attribute 'src) "Error Image"))
- (alt (w3-image-alt src))
- (ismap (and (assq 'ismap args) 'ismap))
- (usemap (w3-get-attribute 'usemap))
- (base (w3-get-attribute 'base))
- (href (and hyperlink-info (cadr (widget-plist-member (cadr hyperlink-info) :href))))
- (target (and hyperlink-info (cadr (widget-plist-member (cadr hyperlink-info) :target))))
- (widget nil)
- (align (or (w3-get-attribute 'align)
- (w3-get-style-info 'vertical-align node)))
- (face w3-active-faces))
- (if (assq '*table-autolayout w3-display-open-element-stack)
- (insert alt)
- (setq hyperimage-info
- (list (point)
- (list 'image
- :src src ; Where to load the image from
- 'alt alt ; Textual replacement
- 'ismap ismap ; Is it a server-side map?
- 'usemap usemap ; Is it a client-side map?
- :href href ; Hyperlink destination
- :target target ; target frame
- :button-face face ; img:link or img:visited entry in stylesheet
- )))
- (setq widget (apply (function widget-create) (cadr hyperimage-info)))
- (widget-put widget 'buffer (current-buffer))
- ;;(w3-maybe-start-image-download widget) ; in w3-resurrect-images
- (if (widget-get widget :from)
- (add-text-properties (widget-get widget :from)
- (widget-get widget :to)
- (list 'html-stack w3-display-open-element-stack)))
- (goto-char (point-max))))))
-
- ;; The table handling
- (eval-and-compile
- (case mule-sysdep-version
- (xemacs
- (if (not (find-charset 'w3-dingbats))
- (make-charset 'w3-dingbats "Dingbats character set for Emacs/W3"
- '(registry "" dimension 1 chars 96 final ?:))))
- ((3.0 3.1)
- (if (not (charsetp 'w3-dingbats))
- (define-charset nil 'w3-dingbats
- (vector
- 1 ; dimension
- 96 ; chars
- 1 ; width
- 1 ; direction
- ?: ; iso-final-char
- 0 ; iso-graphic-plane (whats this?)
- "dingbats" "emacs/w3-dingbats"
- "Dingbats character set for Emacs/W3"))))
- (t
- nil)))
-
- (defun w3-make-char (oct)
- (case mule-sysdep-version
- (xemacs
- (make-char 'w3-dingbats (if (characterp oct) (char-int oct) oct)))
- ((3.0 3.1)
- (make-char 'w3-dingbats oct))
- (t
- oct)))
-
- (defvar w3-table-ascii-border-chars
- [nil nil nil ?+ nil ?- ?+ ?- nil ?+ ?| ?| ?+ ?- ?| ?+]
- "*Vector of ascii characters to use to draw table borders.
- This vector is used when terminal characters are unavailable")
-
- (defvar w3-table-glyph-border-chars
- [nil nil nil 11 nil 2 7 14 nil 3 8 6 1 15 4 5]
- "Vector of characters to use to draw table borders.
- This vector is used when terminal characters are used via glyphs")
-
- (defvar w3-table-graphic-border-chars
- (vector
- nil
- nil
- nil
- (w3-make-char ?j)
- nil
- (w3-make-char ?q)
- (w3-make-char ?m)
- (w3-make-char ?v)
- nil
- (w3-make-char ?k)
- (w3-make-char ?x)
- (w3-make-char ?u)
- (w3-make-char ?l)
- (w3-make-char ?w)
- (w3-make-char ?t)
- (w3-make-char ?n))
- "Vector of characters to use to draw table borders.
- This vector is used when terminal characters are used directly")
-
- (defvar w3-table-border-chars w3-table-ascii-border-chars
- "Vector of characters to use to draw table borders.
- w3-setup-terminal-chars sets this to one of
- w3-table-ascii-border-chars,
- w3-table-glyph-border-chars, or
- w3-table-graphic-border-chars.")
-
- (defsubst w3-table-lookup-char (l u r b &optional char)
- (or char (aref w3-table-border-chars (logior (if l 1 0)
- (if u 2 0)
- (if r 4 0)
- (if b 8 0)))))
-
- (defvar w3-terminal-properties nil)
-
- (defsubst w3-insert-terminal-char (character &optional count inherit)
- (if w3-terminal-properties
- (set-text-properties (point)
- (progn
- (insert-char (or character ? )
- (or count 1) inherit)
- (point))
- w3-terminal-properties)
- (insert-char (or character ? ) (or count 1) inherit)))
-
- (defsubst w3-horizontal-rule-char ()
- (w3-table-lookup-char t nil t nil w3-horizontal-rule-char))
-
- (defun w3-setup-terminal-chars ()
- "Try to find the best set of characters to draw table borders with.
- On a console, this can trigger some Emacs display bugs.
-
- Initializes a number of variables:
- w3-terminal-properties to either nil or a list of properties including 'face
- w3-table-border-chars to one of the the three other vectors"
- (interactive)
- (setq w3-table-border-chars w3-table-ascii-border-chars
- w3-terminal-properties nil)
- (cond
- ((and w3-use-terminal-characters
- (eq (device-type) 'x))
- (if (and (find-face 'w3-table-hack-x-face)
- (face-differs-from-default-p 'w3-table-hack-x-face))
- nil
- (make-face 'w3-table-hack-x-face)
- (if (not (face-differs-from-default-p 'w3-table-hack-x-face))
- (font-set-face-font 'w3-table-hack-x-face
- (make-font :family "terminal"
- :registry "*"
- :encoding "*"
- ))))
- (cond
- ((not (face-differs-from-default-p 'w3-table-hack-x-face))
- nil)
- ((and w3-use-terminal-glyphs (fboundp 'face-id))
- (let ((id (face-id 'w3-table-hack-x-face))
- (c (length w3-table-border-chars)))
- (while (> (decf c) 0)
- (if (aref w3-table-glyph-border-chars c)
- (aset standard-display-table (aref w3-table-glyph-border-chars c)
- (vector (+ (* 256 id)
- (aref w3-table-graphic-border-chars c))))))
- (setq w3-table-border-chars w3-table-glyph-border-chars
- w3-terminal-properties nil)))
- (t
- (setq w3-table-border-chars w3-table-graphic-border-chars
- w3-terminal-properties (list 'start-open t
- 'end-open t
- 'rear-nonsticky t
- 'w3-table-border t
- 'face 'w3-table-hack-x-face)))))
- ((and w3-use-terminal-characters-on-tty
- (eq (device-type) 'tty))
- (let ((c (length w3-table-border-chars)))
- (while (> (decf c) 0)
- (and (aref w3-table-glyph-border-chars c)
- (aref w3-table-graphic-border-chars c)
- (standard-display-g1 (aref w3-table-glyph-border-chars c)
- (aref w3-table-graphic-border-chars c)))))
- (setq w3-table-border-chars w3-table-glyph-border-chars
- w3-terminal-properties (list 'w3-table-border t)))
- (t
- nil))
- w3-table-border-chars)
-
- (defun w3-unsetup-terminal-characters nil
- (interactive)
- (w3-excise-terminal-characters (buffer-list))
- (standard-display-default 1 15)
- (setq w3-table-border-chars w3-table-ascii-border-chars))
-
- (defun w3-excise-terminal-characters (buffs)
- "Replace hacked characters with ascii characters in buffers BUFFS.
- Should be run before restoring w3-table-border-chars to ascii characters.
- This will only work if we used glyphs rather than text properties"
- (interactive (list (list (current-buffer))))
- (let ((inhibit-read-only t)
- (tr (make-string 16 ? ))
- (i 0))
- (while (< i (length tr))
- (aset tr i i)
- (setq i (1+ i)))
- (setq i 0)
- (while (< i (length w3-table-border-chars))
- (and (aref w3-table-border-chars i)
- (< (aref w3-table-border-chars i) 16)
- (aset tr
- (aref w3-table-glyph-border-chars i)
- (aref w3-table-ascii-border-chars i)))
- (setq i (1+ i)))
- (mapcar (function (lambda (buf)
- (save-excursion
- (set-buffer buf)
- (if (eq major-mode 'w3-mode)
- (translate-region (point-min)
- (point-max)
- tr)))))
- buffs)))
-
-
- (defvar w3-display-table-cut-words-p nil
- "*Whether to cut words that are oversized in table cells")
-
- (defvar w3-display-table-force-borders nil
- "*Whether to always draw table borders
- Can sometimes make the structure of a document clearer")
-
- (defun w3-display-table-cut ()
- (save-excursion
- (goto-char (point-min))
- (let ((offset -1))
- (while (< offset 0)
- (end-of-line)
- (setq offset (- fill-column (current-column)))
- (cond ((< offset 0)
- (condition-case nil
- (progn (forward-char offset)
- (insert ?\n))
- (error (setq offset 0))))
- ((not (eobp))
- (forward-line 1)
- (setq offset -1)))))))
-
-
- (defun w3-display-fix-widgets ()
- ;; Make markers belong to the right buffer
- (save-excursion
- (let ((st (point-min))
- (nd nil)
- (widget nil) parent
- (to-marker nil)
- (from-marker nil))
- (while (setq st (next-single-property-change st 'button))
- (setq nd (or (next-single-property-change st 'button) (point-max))
- widget (widget-at st)
- to-marker (and widget (widget-get widget :to))
- from-marker (and widget (widget-get widget :from))
- parent (and widget (widget-get widget :parent))
- )
- (if (not widget)
- nil
- (widget-put widget :from (set-marker (make-marker) st))
- (widget-put widget :to (set-marker (make-marker) nd))
- (if (not parent)
- nil
- (widget-put parent :from (set-marker (make-marker) st))
- (widget-put parent :to (set-marker (make-marker) nd))))
- (if (condition-case ()
- (get-text-property (1+ nd) 'button)
- (error nil))
- (setq st nd)
- (setq st (min (point-max) (1+ nd))))))))
-
- (defun w3-size-of-tree (tree minmax)
- (declare (special args))
- (save-excursion
- (save-restriction
- (narrow-to-region (point) (point))
- ;; XXX fill-column set to 1 fails when fill-prefix is set
- ;; XXX setting fill-column at all isn't really right
- ;; for example <hr>s shouldn't be especially wide
- ;; we should set a flag that makes w3 never wrap a line
- (let ((fill-column (cond ((eq minmax 'min)
- 3)
- ((eq minmax 'max)
- 400)))
- (fill-prefix "")
- (w3-last-fill-pos (point-min))
- a retval
- (w3-do-incremental-display nil)
- (hr-regexp (concat "^"
- (regexp-quote
- (make-string 5 (w3-horizontal-rule-char)))
- "*$"))
- )
- ;;(push 'left w3-display-alignment-stack)
- (push (if (eq minmax 'max) 'nowrap) w3-display-whitespace-stack)
- (while tree
- (push (cons '*td args) w3-display-open-element-stack)
- (w3-display-node (pop tree)))
- (pop w3-display-whitespace-stack)
- (goto-char (point-min))
- (while (re-search-forward hr-regexp nil t)
- (replace-match "" t t))
- (goto-char (point-min))
- (while (not (eobp))
- ;; loop invariant: at beginning of uncounted line
- (end-of-line)
- (skip-chars-backward " ")
- (setq retval (cons (current-column)
- retval))
- (beginning-of-line 2))
- (if (= (point-min) (point-max))
- (setq retval 0)
- (setq retval (apply 'max (cons 0 retval))))
- (delete-region (point-min) (point-max))
- retval))))
-
- (defun w3-display-table-dimensions (node)
- ;; fill-column sets maximum width
- (declare (special args))
- (let (min-vector
- max-vector
- rows cols
- ;;(w3-form-elements (and (boundp 'w3-form-elements) w3-form-elements))
- (table-info (assq 'w3-table-info (cadr node))))
-
- (if table-info
- (setq min-vector (nth 1 table-info)
- max-vector (nth 2 table-info)
- rows (nth 3 table-info)
- cols (nth 4 table-info))
-
- (push (cons '*table-autolayout args) w3-display-open-element-stack)
- (let (content
- cur
- (table-spans (list nil)) ; don't make this '(nil)
- ptr
- col
- constraints
-
- colspan rowspan min max)
- (setq content (nth 2 node))
- (setq rows 0 cols 0)
- (while content
- (setq cur (pop content))
- (if (stringp cur)
- nil
- (case (car cur)
- ((thead tfoot col colgroup)
- (if (nth 2 cur)
- (setq content (append (nth 2 cur) content))))
- (tr
- (setq col 0)
- (setq rows (1+ rows))
- (setq ptr table-spans)
- (mapcar
- (function
- (lambda (td)
- (setq colspan (string-to-int (or (cdr-safe (assq 'colspan (nth 1 td))) "1"))
- rowspan (string-to-int (or (cdr-safe (assq 'rowspan (nth 1 td))) "1"))
- min (w3-size-of-tree (nth 2 td) 'min)
- max (w3-size-of-tree (nth 2 td) 'max)
- )
- (while (eq (car-safe (car-safe (cdr ptr))) col)
- (setq col (+ col (cdr (cdr (car (cdr ptr))))))
- (if (= 0 (decf (car (cdr (car (cdr ptr))))))
- (pop (cdr ptr))
- (setq ptr (cdr ptr))))
- (push (list col colspan min max)
- constraints)
- (if (= rowspan 1) nil
- (push (cons col (cons (1- rowspan) colspan)) (cdr ptr))
- (setq ptr (cdr ptr)))
- (setq col (+ col colspan))
- ))
- (nth 2 cur))
- (while (cdr ptr)
- (if (= 0 (decf (car (cdr (car (cdr ptr))))))
- (pop (cdr ptr))
- (setq ptr (cdr ptr))))
- (setq cols (max cols col))
- )
- (caption
- nil)
- (otherwise
- (setq content (nth 2 cur)))
- )
- )
- )
- (setq constraints (sort constraints
- (function
- (lambda (a b)
- (< (cadr a) (cadr b)))))
- min-vector (make-vector cols 0)
- max-vector (make-vector cols 0))
- (let (start end i mincellwidth maxcellwidth)
- (mapcar (function (lambda (c)
- (cond ((= (cadr c) 1)
- (aset min-vector (car c)
- (max (aref min-vector (car c))
- (nth 2 c)))
- (aset max-vector (car c)
- (max (aref max-vector (car c))
- (nth 3 c))))
- (t
- (setq start (car c)
- end (+ (car c) (cadr c))
- mincellwidth 0
- maxcellwidth 0
- i start)
- (while (< i end)
- (setq mincellwidth (+ mincellwidth
- (aref min-vector i))
- maxcellwidth (+
- maxcellwidth
- (aref max-vector i))
- i (1+ i)))
- (setq i start)
- (if (= mincellwidth 0)
- ;; if existing width is 0 divide evenly
- (while (< i end)
- (aset min-vector i
- (/ (nth 2 c) (cadr c)))
- (aset max-vector i
- (/ (nth 3 c) (cadr c)))
- (setq i (1+ i)))
- ;; otherwise weight it by existing widths
- (while (< i end)
- (aset min-vector i
- (max (aref min-vector i)
- (/ (* (nth 2 c)
- (aref min-vector i))
- mincellwidth)))
- (aset max-vector i
- (max (aref max-vector i)
- (/ (* (nth 3 c)
- (aref max-vector i))
- maxcellwidth)))
- (setq i (1+ i))))
- ))))
- constraints)))
- (push (cons 'w3-table-info
- (list min-vector max-vector rows cols))
- (cadr node))
- (pop w3-display-open-element-stack))
-
- (let (max-width
- min-width
- ret-vector
- col
- )
-
-
- (setq max-width (apply '+ (append max-vector (list cols 1))))
- (setq min-width (apply '+ (append min-vector (list cols 1))))
-
- ;; the comments in the cond are excerpts from rfc1942 itself
- (cond
- ;; 1. The minimum table width is equal to or wider than the available
- ;; space. In this case, assign the minimum widths and allow the
- ;; user to scroll horizontally. For conversion to braille, it will
- ;; be necessary to replace the cells by references to notes
- ;; containing their full content. By convention these appear
- ;; before the table.
- ((>= min-width fill-column)
- (setq ret-vector min-vector))
-
- ;; 2. The maximum table width fits within the available space. In
- ;; this case, set the columns to their maximum widths.
- ((<= max-width fill-column)
- (setq ret-vector max-vector))
-
- ;; 3. The maximum width of the table is greater than the available
- ;; space, but the minimum table width is smaller. In this case,
- ;; find the difference between the available space and the minimum
- ;; table width, lets call it W. Lets also call D the difference
- ;; between maximum and minimum width of the table.
-
- ;; For each column, let d be the difference between maximum and
- ;; minimum width of that column. Now set the column's width to the
- ;; minimum width plus d times W over D. This makes columns with
- ;; large differences between minimum and maximum widths wider than
- ;; columns with smaller differences.
- (t
- (setq ret-vector (make-vector cols 0))
- (let ((W (- fill-column min-width))
- (D (- max-width min-width))
- d extra)
- (setq col 0)
- (while (< col (length ret-vector))
- (setq d (- (aref max-vector col)
- (aref min-vector col)))
- (aset ret-vector col
- (+ (aref min-vector col)
- (/ (* d W) D)))
- (setq col (1+ col)))
- (setq extra (- fill-column
- (apply '+ (append ret-vector
- (list (length ret-vector) 1))))
- col 0)
- (while (and (< col (length ret-vector)) (> extra 0))
- (if (= 1 (- (aref max-vector col) (aref ret-vector col) ))
- (aset ret-vector col (1+ (aref ret-vector col))))
- (setq extra (1- extra)
- col (1+ col)))
- )))
- (list rows cols ret-vector))))
-
- (defun w3-display-table (node)
- (let* ((dimensions (w3-display-table-dimensions node))
- (num-cols (max (cadr dimensions) 1))
- (num-rows (max (car dimensions) 1))
- (column-dimensions (caddr dimensions))
- (table-width (apply '+ (append column-dimensions (list num-cols 1)))))
- (cond
- ((or (<= (cadr dimensions) 0) (<= (car dimensions) 0))
- ;; We have an invalid table
- nil)
- ((assq '*table-autolayout w3-display-open-element-stack)
- ;; don't bother displaying the table if all we really need is the size
- (progn (insert-char ?T table-width) (insert "\n")))
- (t
- (let* ((tag (nth 0 node))
- (args (nth 1 node))
- (border-node (cdr-safe (assq 'border args)))
- (border-char
- (unless (or w3-display-table-force-borders
- (and border-node
- (or (/= 0 (string-to-int border-node))
- (string= "border" border-node))))
- ? ))
-
- valign align
- (content (nth 2 node))
- (avgwidth (/ (- fill-column num-cols num-cols) num-cols))
- (formatted-cols (make-vector num-cols nil))
- (table-rowspans (make-vector num-cols 0))
- (table-colspans (make-vector num-cols 1))
- (prev-colspans (make-vector num-cols 0))
- (prev-rowspans (make-vector num-cols 0))
- (table-colwidth (make-vector num-cols 0))
- (fill-prefix "")
- (height nil)
- (cur-height nil)
- (cols nil)
- (rows nil)
- (row 0)
- (this-rectangle nil)
- (inhibit-read-only t)
- (i 0)
- )
-
- (push (cons tag args) w3-display-open-element-stack)
-
- (if (memq 'nowrap w3-display-whitespace-stack)
- (setq fill-prefix "")
- (case (car w3-display-alignment-stack)
- (center
- (w3-set-fill-prefix-length
- (max 0 (/ (- fill-column table-width) 2))))
- (right
- (w3-set-fill-prefix-length
- (max 0 (- fill-column table-width))))
- (t
- (setq fill-prefix ""))))
- (while content
- (case (caar content)
- ((thead tfoot col colgroup)
- (if (nth 2 (car content))
- (setq content (append (nth 2 (car content)) (cdr content)))
- (setq content (cdr content))))
- (tr
- (setq w3-display-css-properties (css-get
- (nth 0 (car content))
- (nth 1 (car content))
- w3-current-stylesheet
- w3-display-open-element-stack))
- (setq cols (nth 2 (car content))
- valign (or (cdr-safe (assq 'valign (nth 1 (car content))))
- (w3-get-style-info 'vertical-align node))
- align (or (cdr-safe (assq 'align (nth 1 (car content))))
- (w3-get-style-info 'text-align node))
- content (cdr content)
- row (1+ row))
- (if (and valign (stringp valign))
- (setq valign (intern (downcase valign))))
- ;; this is iffy
- ;;(if align (push (intern (downcase align)) w3-display-alignment-stack))
- (save-excursion
- (save-restriction
- (narrow-to-region (point) (point))
- (setq fill-column avgwidth
- w3-last-fill-pos (point-min)
- i 0)
- ;; skip over columns that have leftover content
- (while (and (< i num-cols)
- (/= 0 (aref table-rowspans i)))
- (setq i (+ i (max 1 (aref table-colspans i)))))
- ;; Need to push the properties for the table onto the stack
- (setq w3-display-css-properties (css-get
- tag
- args
- w3-current-stylesheet
- w3-display-open-element-stack))
- (push (w3-face-for-element (list tag args nil)) w3-active-faces)
- (push (w3-voice-for-element (list tag args nil)) w3-active-voices)
- (push (cons tag args) w3-display-open-element-stack)
- (while cols
- ;; And need to push these bogus placeholders on there
- ;; so that w3-display-node doesn't pop off the real face
- ;; or voice we just put in above.
- (push nil w3-active-faces)
- (push nil w3-active-voices)
- (let* ((node (car cols))
- (attributes (nth 1 node))
- (colspan (string-to-int
- (or (cdr-safe (assq 'colspan attributes))
- "1")))
- (rowspan (string-to-int
- (or (cdr-safe (assq 'rowspan attributes))
- "1")))
- fill-column column-width
- (fill-prefix "")
- (w3-do-incremental-display nil)
- (indent-tabs-mode nil)
- c e
- )
-
- (aset table-colspans i colspan)
- (aset table-rowspans i rowspan)
-
- (setq fill-column 0)
- (setq c i
- e (+ i colspan))
- (while (< c e)
- (setq fill-column (+ fill-column
- (aref column-dimensions c)
- 1)
- c (1+ c)))
- (setq fill-column (1- fill-column))
- (aset table-colwidth i fill-column)
-
- (setq w3-last-fill-pos (point-min))
- (push (cons (nth 0 node) (nth 1 node))
- w3-display-open-element-stack)
- (w3-display-node node)
- (setq fill-column (aref table-colwidth i))
- (if w3-display-table-cut-words-p
- (w3-display-table-cut))
- (setq cols (cdr cols))
- (goto-char (point-min))
- (skip-chars-forward "\t\n\r")
- (beginning-of-line)
- (delete-region (point-min) (point))
- (goto-char (point-max))
- (skip-chars-backward " \t\n\r")
- (delete-region (point) (point-max))
- (if (>= fill-column (current-column))
- (insert-char ? (- fill-column (current-column)) t))
- (goto-char (point-min))
- ;; This gets our text properties out to the
- ;; end of lines for table rows/cells with backgrounds
- (while (not (eobp))
- (re-search-forward "$" nil t)
- (if (>= fill-column (current-column))
- (insert-char ? (- fill-column (current-column)) t))
- (or (eobp) (forward-char 1)))
- (aset formatted-cols i (extract-rectangle (point-min) (point-max)))
- (delete-region (point-min) (point-max))
- (let ((j (1- colspan)))
- (while (> j 0)
- (aset table-colspans (+ i j) 0)
- (setq j (1- j))))
- (setq i (+ i colspan))
- ;; skip over columns that have leftover content
- (while (and (< i num-cols)
- (/= 0 (aref table-rowspans i)))
- (setq i (+ i (max 1 (aref table-colspans i)))))
- ))
- (pop w3-display-open-element-stack)
- (pop w3-active-faces)
- (pop w3-active-voices)
- (w3-pop-all-face-info)
- ;; finish off the columns
- (while (< i num-cols)
- (aset table-colwidth i (aref column-dimensions i))
- (aset table-colspans i 1)
- (setq i (1+ i))
- (while (and (< i num-cols)
- (/= 0 (aref table-rowspans i)))
- (setq i (+ i (max 1 (aref table-colspans i))))))
-
- ;; on the last row empty any pending rowspans per the rfc
- (if content nil
- (fillarray table-rowspans 1))
-
- ;; Find the tallest rectangle that isn't a rowspanning cell
- (setq height 0
- i 0)
- (while (< i num-cols)
- (if (= 1 (aref table-rowspans i))
- (setq height (max height (length (aref formatted-cols i)))))
- (setq i (+ i (max 1 (aref table-colspans i)))))
-
- ;; Make all rectangles the same height
- (setq i 0)
- (while (< i num-cols)
- (setq this-rectangle (aref formatted-cols i))
- (if (> height (length this-rectangle))
- (let ((colspan-fill-line
- (make-string (abs (aref table-colwidth i)) ? )))
- (case valign
- ((center middle)
- (aset formatted-cols i
- (append (make-list (/ (- height (length this-rectangle)) 2)
- colspan-fill-line)
- this-rectangle)))
- (bottom
- (aset formatted-cols i
- (append (make-list (- height (length this-rectangle))
- colspan-fill-line)
- this-rectangle))))))
- (setq i (+ i (max 1 (aref table-colspans i)))))))
-
-
- ;; fix broken colspans (this should only matter on illegal tables)
- (setq i 0)
- (while (< i num-cols)
- (if (= (aref table-colspans i) 0)
- (aset table-colspans i 1))
- (setq i (+ i (aref table-colspans i))))
-
- ;; Insert a separator
- (insert fill-prefix)
- (setq i 0)
- (let (rflag bflag tflag lflag)
- (while (< i num-cols)
-
- (setq rflag (= (aref prev-rowspans i) 0)
- bflag (/= (aref table-colspans i) 0)
- tflag (/= (aref prev-colspans i) 0))
- (w3-insert-terminal-char
- (w3-table-lookup-char lflag tflag rflag bflag border-char))
- (setq lflag t)
- (cond ((= (aref prev-rowspans i) 0)
- (w3-insert-terminal-char
- (w3-table-lookup-char t nil t nil border-char)
- (aref column-dimensions i))
- (setq i (1+ i)))
- ((car (aref formatted-cols i))
- (insert (pop (aref formatted-cols i)))
- (setq lflag nil)
- (setq i (+ i (max (aref table-colspans i)
- (aref prev-colspans i) 1))))
- (t
- (insert-char ? (aref table-colwidth i) t)
- (setq lflag nil)
- (setq i (+ i (max (aref table-colspans i)
- (aref prev-colspans i) 1))))))
- (w3-insert-terminal-char (w3-table-lookup-char lflag (/= row 1) nil t border-char))
- (insert "\n"))
-
- ;; recalculate height (in case we've shortened a rowspanning cell
- (setq height 0
- i 0)
- (while (< i num-cols)
- (if (= 1 (aref table-rowspans i))
- (setq height (max height (length (aref formatted-cols i)))))
- (setq i (+ i (max 1 (aref table-colspans i)))))
-
- ;; Insert a row back in original buffer
- (while (> height 0)
- (insert fill-prefix)
- (w3-insert-terminal-char (w3-table-lookup-char nil t nil t border-char))
- (setq i 0)
- (while (< i num-cols)
- (if (car (aref formatted-cols i))
- (insert (pop (aref formatted-cols i)))
- (insert-char ? (aref table-colwidth i) t))
- (w3-insert-terminal-char (w3-table-lookup-char nil t nil t border-char))
- (setq i (+ i (max (aref table-colspans i) 1))))
- (insert "\n")
- ;;(and w3-do-incremental-display (w3-pause))
- (setq height (1- height)))
-
- (setq i 0)
- (while (< i num-cols)
- (if (> (aref table-rowspans i) 0)
- (decf (aref table-rowspans i)))
- (incf i))
-
- (setq prev-rowspans (copy-seq table-rowspans))
- (setq prev-colspans (copy-seq table-colspans))
-
- (and w3-do-incremental-display (w3-pause))
- )
- (caption
- (let ((left (length fill-prefix))
- (fill-prefix "")
- (fill-column table-width)
- (start (point)))
- (w3-display-node (pop content))
- (indent-rigidly start (point) left)))
- (otherwise
- (delete-horizontal-space)
- (setq content (nth 2 (car content))))
- ))
- (if (= (length column-dimensions) 0) nil
- (insert fill-prefix)
- (setq i 0)
- (let (tflag lflag)
- (while (< i num-cols)
- (setq tflag (/= (aref prev-colspans i) 0))
- (w3-insert-terminal-char (w3-table-lookup-char lflag tflag t nil border-char))
- (setq lflag t)
- (w3-insert-terminal-char
- (w3-table-lookup-char t nil t nil border-char)
- (aref column-dimensions i))
- (setq i (1+ i)))
- (w3-insert-terminal-char
- (w3-table-lookup-char t t nil nil border-char))
- (insert "\n")))
- )
- (pop w3-display-open-element-stack)))))
-
-
-
- (defun w3-display-create-unique-id ()
- (let* ((date (current-time-string))
- (dateinfo (and date (timezone-parse-date date)))
- (timeinfo (and date (timezone-parse-time (aref dateinfo 3)))))
- (if (and dateinfo timeinfo)
- (concat (aref dateinfo 0) ; Year
- (aref dateinfo 1) ; Month
- (aref dateinfo 2) ; Day
- (aref timeinfo 0) ; Hour
- (aref timeinfo 1) ; Minute
- (aref timeinfo 2) ; Second
- )
- "HoplesSLYCoNfUSED")))
-
- (defun w3-display-chop-into-table (node cols)
- ;; Chop the content of 'node' up into 'cols' columns suitable for inclusion
- ;; as the content of a table
- (let ((content (nth 2 node))
- (items nil)
- (rows nil))
- (setq cols (max cols 1))
- (while content
- (push (list 'td nil (list (pop content))) items)
- (if (= (length items) cols)
- (setq rows (cons (nreverse items) rows)
- items nil)))
- (if items ; Store any leftovers
- (setq rows (cons (nreverse items) rows)
- items nil))
- (while rows
- (push (list 'tr nil (pop rows)) items))
- items))
-
- (defun w3-fix-color (color)
- (if (and color
- (string-match "^[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]$" color))
- (concat "#" color)
- color))
-
- (defun w3-display-normalize-form-info (args)
- (let* ((plist (alist-to-plist args))
- (type (intern (downcase
- (or (plist-get plist 'type) "text"))))
- (name (plist-get plist 'name))
- (value (or (plist-get plist 'value) ""))
- (size (if (plist-get plist 'size)
- (string-to-int (plist-get plist 'size))))
- (maxlength (if (plist-get plist 'maxlength)
- (string-to-int
- (plist-get plist 'maxlength))))
- (default value)
- (checked (assq 'checked args)))
- (if (memq type '(checkbox radio)) (setq default checked))
- (if (and (eq type 'checkbox) (string= value ""))
- (setq value "on"))
- (if (and (not (memq type '(submit reset button)))
- (not name))
- (setq name (symbol-name type)))
- (while (and name (string-match "[\r\n]+" name))
- (setq name (concat (substring name 0 (match-beginning 0))
- (substring name (match-end 0) nil))))
- (setq plist (plist-put plist 'type type)
- plist (plist-put plist 'name name)
- plist (plist-put plist 'value value)
- plist (plist-put plist 'size size)
- plist (plist-put plist 'default default)
- plist (plist-put plist 'internal-form-number w3-current-form-number)
- plist (plist-put plist 'action w3-display-form-id)
- plist (plist-put plist 'maxlength maxlength))
- plist))
-
- (defvar w3-resurrect-images-offset nil
- "A-list of alt offsets for widgets cut in tables, used in `w3-resurrect-images'")
-
- (defun w3-resurrect-images ()
- (let ((st (point-min))
- (inhibit-read-only t)
- info nd node face widget)
- (while st
- (if (setq info (get-text-property st 'w3-hyperimage-info))
- (progn
- (setq nd (or (next-single-property-change st 'w3-hyperimage-info)
- (point-max)))
- (let* ((alt (widget-get info 'alt))
- (max (point-max))
- (offset-elt (assoc alt w3-resurrect-images-offset))
- (offset (if offset-elt (cdr offset-elt) 0))
- to-cut new-offset)
- (delete-region st nd)
- (goto-char st)
- (setq widget (apply (function widget-create) info))
- (if (not (zerop offset))
- ;; already started on this widget - remove beginning of alt
- (delete-region st (+ st offset)))
- (setq to-cut (- (point-max) max)
- new-offset (1+ (- nd st)))
- (cond ((not (zerop to-cut))
- ;; cut end of alt if too long after resurrection
- (delete-region nd (+ nd to-cut))
- (if offset-elt
- (setcdr offset-elt (+ offset new-offset))
- (setq w3-resurrect-images-offset
- (cons (cons alt new-offset)
- w3-resurrect-images-offset))))))
- (widget-put widget 'buffer (current-buffer))
- (w3-maybe-start-image-download widget)
- (if (widget-get widget :from)
- (add-text-properties (widget-get widget :from)
- (widget-get widget :to)
- (list 'html-stack w3-display-open-element-stack)))))
- (setq st (next-single-property-change st 'w3-hyperimage-info)))
- (setq w3-resurrect-images-offset nil)))
-
- (defun w3-resurrect-hyperlinks ()
- (let ((st (point-min))
- (inhibit-read-only t)
- info nd node face)
- (while st
- (if (setq info (get-text-property st 'w3-hyperlink-info))
- (progn
- (setq nd (or (next-single-property-change st 'w3-hyperlink-info)
- (point-max)))
- (apply 'widget-convert-text 'link st nd st nd (nconc
- (list :start st
- :end nd)
- info))))
- (setq st (next-single-property-change st 'w3-hyperlink-info)))))
-
- (defun w3-display-convert-arglist (args)
- (let ((rval nil)
- (newsym nil)
- (cur nil))
- (while (setq cur (pop args))
- (setq newsym (intern (concat ":" (symbol-name (car cur))))
- rval (plist-put rval newsym (cdr cur))))
- rval))
-
- (defun w3-display-node (node &optional nofaces)
- (let (
- (content-stack (list (list node)))
- (right-margin-stack (list fill-column))
- (left-margin-stack (list 0))
- (inhibit-read-only t)
- (widget-push-button-gui nil)
- node
- insert-before
- insert-after
- tag
- args
- content
- hyperlink-info
- hyperimage-info
- break-style
- cur
- id
- class
- last-element
- )
- (while content-stack
- (setq content (pop content-stack))
- (pop w3-active-faces)
- (pop w3-active-voices)
- (w3-display-progress-meter)
- (setq last-element (pop w3-display-open-element-stack))
- (case (car last-element)
- ;; Any weird, post-display-of-content stuff for specific tags
- ;; goes here. Couldn't think of any better way to do this when we
- ;; are iterative. *sigh*
- (a
- (if (not hyperlink-info)
- nil
- (add-text-properties (car hyperlink-info) (point)
- (list
- 'duplicable t
- 'start-open t
- 'end-open t
- 'rear-nonsticky t
- 'w3-hyperlink-info (cadr hyperlink-info))))
- (setq hyperlink-info nil))
- (img
- (if (not hyperimage-info)
- nil
- (add-text-properties (car hyperimage-info) (point)
- (list
- 'duplicable t
- 'start-open t
- 'end-open t
- 'rear-nonsticky t
- 'w3-hyperimage-info (cadr hyperimage-info))))
- (setq hyperimage-info nil))
- ((ol ul dl dir menu)
- (pop w3-display-list-stack))
- (label
- (if (and (markerp w3-display-label-marker)
- (marker-position w3-display-label-marker)
- (marker-buffer w3-display-label-marker))
- (push (cons (or (cdr-safe (assq 'for (cdr last-element)))
- (cdr-safe (assq 'id (cdr last-element)))
- "unknown")
- (buffer-substring w3-display-label-marker (point)))
- w3-form-labels)))
- (otherwise
- nil))
- (if (car insert-after)
- (w3-handle-string-content (car insert-after)))
- (pop insert-after)
- (w3-display-handle-end-break)
- (w3-pop-all-face-info)
- ;; Handle the element's content
- (while content
- (w3-display-progress-meter)
- (if (stringp (car content))
- (w3-handle-string-content (pop content))
- (setq node (pop content)
- tag (nth 0 node)
- args (nth 1 node)
- id (or (w3-get-attribute 'name)
- (w3-get-attribute 'id))
- )
- ;; This little bit of magic takes care of inline styles.
- ;; Evil Evil Evil, but it appears to work.
- (if (w3-get-attribute 'style)
- (let ((unique-id (or (w3-get-attribute 'id)
- (w3-display-create-unique-id)))
- (sheet "")
- (class (assq 'class args)))
- (setq sheet (format "%s.%s { %s }\n" tag unique-id
- (w3-get-attribute 'style)))
- (if class
- (setcdr class (cons unique-id (cdr class)))
- (setf (nth 1 node) (cons (cons 'class (list unique-id))
- (nth 1 node))))
- (setf (nth 1 node) (cons (cons 'id unique-id) (nth 1 node)))
- (w3-handle-style (list 'data sheet
- 'notation "text/css"))))
- (setq w3-display-css-properties (css-get
- (nth 0 node)
- (nth 1 node)
- w3-current-stylesheet
- w3-display-open-element-stack))
- (push (w3-get-style-info 'display node) break-style)
- (push (w3-get-style-info 'insert-after node) insert-after)
- (setq insert-before (w3-get-style-info 'insert-before node))
- (w3-display-handle-break)
- (if (w3-node-visible-p)
- nil
- (setq insert-before nil
- tag '*invisible)
- (setcar insert-after nil))
- (if insert-before
- (w3-handle-string-content insert-before))
- (if nofaces
- nil
- (push (w3-face-for-element node) w3-active-faces)
- (push (w3-voice-for-element node) w3-active-voices))
- (setq insert-before nil)
- (if id
- (setq w3-id-positions (cons
- (cons (intern id)
- (set-marker (make-marker)
- (point-max)))
- w3-id-positions)))
- (case tag
- (a ; Hyperlinks
- (let* (
- (title (w3-get-attribute 'title))
- (name (or (w3-get-attribute 'id)
- (w3-get-attribute 'name)))
- (btdt nil)
- class
- (before nil)
- (after nil)
- (face nil)
- (voice nil)
- (st nil)
- (old-props w3-display-css-properties)
- (active-face nil)
- (visited-face nil)
- (munged (copy-tree args)))
- (if (assq 'class munged)
- (push ":active" (cdr (assq 'class munged)))
- (setq munged (cons (cons 'class '(":active")) munged)))
- (setq w3-display-css-properties (css-get
- tag
- munged
- w3-current-stylesheet
- w3-display-open-element-stack))
- (setq active-face (w3-face-for-element (list tag munged nil)))
- (w3-pop-all-face-info)
- (setq munged (copy-tree args))
- (if (assq 'class munged)
- (push ":visited" (cdr (assq 'class munged)))
- (setq munged (cons (cons 'class '(":visited")) munged)))
- (setq w3-display-css-properties (css-get
- tag
- munged
- w3-current-stylesheet
- w3-display-open-element-stack))
- (setq visited-face (w3-face-for-element (list tag munged nil)))
- (w3-pop-all-face-info)
- (setq w3-display-css-properties old-props)
- (if (w3-get-attribute 'href)
- (setq st (point)
- hyperlink-info (list
- st
- (append
- (list :args nil
- :value "" :tag ""
- :action 'w3-follow-hyperlink
- :button-face '(nil)
- :active-face active-face
- :visited-face visited-face
- :from (set-marker
- (make-marker) st)
- :help-echo 'w3-widget-echo
- :emacspeak-help 'w3-widget-echo
- )
- (w3-display-convert-arglist args)))))
- (w3-handle-content node)
- )
- )
- ((ol ul dl menu)
- (push (if (w3-get-attribute 'seqnum)
- (1- (string-to-int (w3-get-attribute 'seqnum)))
- 0) w3-display-list-stack)
- (w3-handle-content node))
- (dir
- (push 0 w3-display-list-stack)
- (setq node
- (list tag args
- (list
- (list 'table nil
- (w3-display-chop-into-table node 3)))))
- (w3-handle-content node))
- (multicol
- (setq node (list tag args
- (list
- (list 'table nil
- (w3-display-chop-into-table node 2)))))
- (w3-handle-content node))
- (img ; inlined image
- (w3-handle-image)
- (w3-handle-empty-tag))
- (frameset
- (if w3-display-frames
- (let ((frames (nth 2 node))
- (frameset-cardinal 0)
- (cols (cdr-safe (assq 'cols args))))
- (while (and frames (memq (car (car frames)) '(frame frameset)))
- (setq frameset-cardinal (1+ frameset-cardinal)
- frames (cdr frames)))
- (push (list 'frameset
- frameset-cardinal
- (if (w3-frameset-dimensions-p cols)
- (assq 'cols args)
- (assq 'rows args)))
- w3-frameset-structure)
- (w3-handle-content node))
- (w3-handle-content node)))
- (frame
- (if w3-display-frames
- (let* ((href (or (w3-get-attribute 'src)
- (w3-get-attribute 'href)))
- (name (or (w3-get-attribute 'name)
- (w3-get-attribute 'title)
- (w3-get-attribute 'alt)
- "Unknown frame name")))
- (push (list 'frame name href) w3-frameset-structure)
- (w3-handle-content
- (list tag args
- (list
- (list 'p nil
- (list
- (list 'a
- (cons (cons 'href href)
- args)
- (list "Fetch frame: " name))))))))
- (w3-handle-empty-tag)))
- (noframes
- (if w3-display-frames
- (w3-handle-empty-tag)
- (w3-handle-content node)))
- (applet ; Wow, Java
- (w3-handle-content node)
- )
- (script ; Scripts
- (w3-handle-empty-tag))
- ((embed object) ; Embedded images/content
- (w3-handle-content node)
- )
- (hr ; Cause line break & insert rule
- (let* ((perc (or (w3-get-attribute 'width)
- (w3-get-style-info 'width node)
- "100%"))
- (width nil))
- (if (stringp perc)
- (setq perc (/ (min (string-to-int perc) 100) 100.0)
- width (truncate (* fill-column perc)))
- (setq width perc))
- (w3-insert-terminal-char (w3-horizontal-rule-char) width)
- (w3-handle-empty-tag)))
- (map ; Client side imagemaps
- (let ((name (or (w3-get-attribute 'name)
- (w3-get-attribute 'id)
- "unnamed"))
- (areas
- (mapcar
- (function
- (lambda (node)
- (let* ((args (nth 1 node))
- (type (downcase (or
- (w3-get-attribute 'shape)
- "rect")))
- (coords (w3-decode-area-coords
- (or (cdr-safe
- (assq 'coords args)) "")))
- (alt (w3-get-attribute 'alt))
- (href (if (assq 'nohref args)
- t
- (or (w3-get-attribute 'src)
- (w3-get-attribute 'href))))
- )
- (vector type coords href alt))
- )
- )
- (nth 2 node))))
- (setq w3-imagemaps (cons (cons name areas) w3-imagemaps)))
- (w3-handle-empty-tag)
- )
- (note
- ;; Ewwwwhhh. Looks gross, but it works. This converts a
- ;; <note> into a two-cell table, so that things look all
- ;; pretty.
- (setq node
- (list 'note nil
- (list
- (list 'table nil
- (list
- (list 'tr nil
- (list
- (list 'td (list 'align 'right)
- (list
- (concat
- (or (w3-get-attribute 'role)
- "CAUTION") ":")))
- (list 'td nil
- (nth 2 node)))))))))
- (w3-handle-content node)
- )
- (table
- (w3-display-table node)
- (setq w3-last-fill-pos (point))
- (w3-handle-empty-tag)
- )
- (isindex
- (let ((prompt (or (w3-get-attribute 'prompt)
- "Search on (+ separates keywords): "))
- action node)
- (setq action (or (w3-get-attribute 'src)
- (w3-get-attribute 'href)
- (url-view-url t)))
- (if (and prompt (string-match "[^: \t-]+$" prompt))
- (setq prompt (concat prompt ": ")))
- (setq node
- (list 'isindex nil
- (list
- (list 'hr nil nil)
- (list 'form
- (list (cons 'action action)
- (cons 'enctype
- "application/x-w3-isindex")
- (cons 'method "get"))
- (list
- prompt
- (list 'input
- (list (cons 'type "text")
- (cons 'name "isindex"))))))))
- (w3-handle-content node)
- (setq w3-current-isindex (cons action prompt)))
- )
- ((html body)
- (let ((fore (car (delq nil (copy-list w3-face-color))))
- (back (car (delq nil (copy-list w3-face-background-color))))
- (pixm (car (delq nil (copy-list w3-face-background-image))))
- (alink (w3-get-attribute 'alink))
- (vlink (w3-get-attribute 'vlink))
- (link (w3-get-attribute 'link))
- (sheet "")
- )
- (if link
- (setq sheet (format "%sa:link { color: %s }\n" sheet
- (w3-fix-color link))))
- (if vlink
- (setq sheet (format "%sa:visited { color: %s }\n" sheet
- (w3-fix-color vlink))))
- (if alink
- (setq sheet (format "%sa:active { color: %s }\n" sheet
- (w3-fix-color alink))))
- (if w3-user-colors-take-precedence
- nil
- (if (/= (length sheet) 0)
- (w3-handle-style (list 'data sheet
- 'notation "text/css")))
- (if (and (w3-get-attribute 'background)
- (not pixm))
- (progn
- (setq pixm (w3-get-attribute 'background))
- (setf (car w3-face-background-image) pixm)))
- (if (and (w3-get-attribute 'text) (not fore))
- (progn
- (setq fore (w3-fix-color (w3-get-attribute 'text)))
- (setf (car w3-face-color) fore)))
- (if (not font-running-xemacs)
- (setq w3-display-background-properties (cons fore back))
- (if pixm
- (w3-maybe-start-background-image-download pixm 'default))
- (if fore
- (font-set-face-foreground 'default fore (current-buffer)))
- (if back
- (font-set-face-background 'default back (current-buffer)))))
- (w3-handle-content node)))
- (*document
- (let ((info (mapcar (lambda (x) (cons x (symbol-value x)))
- w3-persistent-variables)))
- (if (not w3-display-same-buffer)
- (set-buffer (generate-new-buffer "Untitled")))
- (setq w3-current-form-number 0
- w3-display-open-element-stack nil
- w3-last-fill-pos (point-min))
- (setcar right-margin-stack
- (min (- (or w3-strict-width (window-width))
- w3-right-margin)
- (or w3-maximum-line-length
- (window-width))))
- (condition-case nil
- (switch-to-buffer (current-buffer))
- (error (message "W3 buffer %s is being drawn." (buffer-name (current-buffer)))))
-
- (buffer-disable-undo (current-buffer))
- (mapcar (function (lambda (x) (set (car x) (cdr x)))) info)
- ;; ACK! We don't like filladapt mode!
- (set (make-local-variable 'filladapt-mode) nil)
- (set (make-local-variable 'adaptive-fill-mode) nil)
- (set (make-local-variable 'voice-lock-mode) t)
- (set (make-local-variable 'cur-viewing-pos) (point-min))
- (setq w3-current-stylesheet (css-copy-stylesheet
- w3-user-stylesheet)
- w3-last-fill-pos (point)
- fill-prefix "")
- )
- (w3-handle-content node)
- )
- (*invisible
- (w3-handle-empty-tag))
- (meta
- (let* ((equiv (cdr-safe (assq 'http-equiv args)))
- (value (w3-get-attribute 'content))
- (name (w3-get-attribute 'name))
- (node (and equiv (assoc (setq equiv (downcase equiv))
- url-current-mime-headers))))
- (if equiv
- (setq url-current-mime-headers (cons
- (cons equiv value)
- url-current-mime-headers)))
- (if name
- (setq w3-current-metainfo (cons
- (cons name value)
- w3-current-metainfo)))
-
- ;; Special-case the Set-Cookie header
- (if (and equiv (string= (downcase equiv) "set-cookie"))
- (url-cookie-handle-set-cookie value))
- ;; Special-case the refresh header
- (if (and equiv (string= (downcase equiv) "refresh"))
- (url-handle-refresh-header value)))
- (w3-handle-empty-tag)
- )
- (link
- ;; This doesn't handle blank-separated values per the RFC.
- (w3-parse-link args)
- (w3-handle-empty-tag))
- (title
- (let ((potential-title "")
- (content (nth 2 node)))
- (while content
- (setq potential-title (concat potential-title (car content))
- content (cdr content)))
- (setq potential-title (w3-normalize-spaces potential-title))
- (if (or w3-display-same-buffer
- (string-match "^[ \t]*$" potential-title))
- nil
- (rename-buffer (generate-new-buffer-name
- (w3-fix-spaces potential-title)))))
- (w3-handle-empty-tag))
- (base
- (setq w3-base-target (cdr-safe (assq 'target args)))
- (w3-handle-content node))
- (form
- (setq w3-current-form-number (1+ w3-current-form-number))
- (let* (
- (action (w3-get-attribute 'action))
- (url nil))
- (if (not action)
- (setq args (cons (cons 'action (url-view-url t)) args)))
- (setq w3-display-form-id (cons
- (cons 'form-number
- w3-current-form-number)
- args))
- (w3-handle-content node)))
- (keygen
- (w3-form-add-element
- (w3-display-normalize-form-info
- (cons '(type . "keygen")
- args))
- w3-active-faces)
- (w3-handle-empty-tag))
- (input
- (w3-form-add-element
- (w3-display-normalize-form-info args)
- w3-active-faces)
- (w3-handle-empty-tag)
- )
- (select
- (let* ((plist (w3-display-normalize-form-info args))
- (tmp nil)
- (multiple (assq 'multiple args))
- (value nil)
- (name (plist-get plist 'name))
- (options (mapcar
- (function
- (lambda (n)
- (setq tmp (w3-normalize-spaces
- (apply 'concat (nth 2 n)))
- tmp (vector tmp
- (or
- (cdr-safe
- (assq 'value (nth 1 n)))
- tmp)
- (assq 'selected (nth 1 n))))
- (if (assq 'selected (nth 1 n))
- (setq value (aref tmp 0)))
- tmp))
- (nth 2 node))))
- (if (not value)
- (setq value (and options (aref (car options) 0))))
- (setq plist (plist-put plist 'value value))
- (if multiple
- (progn
- (setq options
- (mapcar
- (function
- (lambda (opt)
- (list 'div nil
- (list
- (list 'input
- (list (cons 'name name)
- (cons 'type "checkbox")
- (cons (if (aref opt 2)
- 'checked
- '__bogus__) "yes")
- (cons 'value (aref opt 1))))
- " " (aref opt 0) (list 'br nil nil)))))
- options))
- (setq node (list 'p nil options))
- (w3-handle-content node))
- (setq options (mapcar (function
- (lambda (x)
- (cons (aref x 0) (aref x 1))))
- options))
- (setq plist (plist-put plist 'type 'option)
- plist (plist-put plist 'options options))
- (w3-form-add-element plist w3-active-faces)
- ;; This should really not be necessary, but some versions
- ;; of the widget library leave point _BEFORE_ the menu
- ;; widget instead of after.
- (goto-char (point-max))
- (w3-handle-empty-tag))))
- (textarea
- (let* ((plist (w3-display-normalize-form-info args))
- (value (apply 'concat (nth 2 node))))
- (setq plist (plist-put plist 'type 'multiline)
- plist (plist-put plist 'value value))
- (w3-form-add-element plist w3-active-faces))
- (w3-handle-empty-tag)
- )
- (style
- (w3-handle-style (alist-to-plist
- (cons (cons 'data (apply 'concat (nth 2 node)))
- (nth 1 node))))
- (w3-handle-empty-tag))
- (label
- (if (not (markerp w3-display-label-marker))
- (setq w3-display-label-marker (make-marker)))
- (set-marker w3-display-label-marker (point))
- (w3-handle-content node))
- ;; Emacs-W3 stuff that cannot be expressed in a stylesheet
- (pinhead
- ;; This check is so that we don't screw up table auto-layout
- ;; by changing our text midway through the parse/layout/display
- ;; steps.
- (if (nth 2 node)
- nil
- (setcar (cddr node)
- (list
- (if (fboundp 'yow)
- (yow)
- "AIEEEEE! I am having an UNDULATING EXPERIENCE!"))))
- (w3-handle-content node))
- (flame
- (if (nth 2 node)
- nil
- (setcar
- (cddr node)
- (list
- (condition-case ()
- (concat
- (sentence-ify
- (string-ify
- (append-suffixes-hack (flatten (*flame))))))
- (error
- "You know, everything is really a graphics editor.")))))
- (w3-handle-content node))
- (cookie
- (if (nth 2 node)
- nil
- (setcar
- (cddr node)
- (list
- (w3-display-get-cookie args))))
- (w3-handle-content node))
- ;; Generic formatting - all things that can be fully specified
- ;; by a CSS stylesheet.
- (otherwise
- (w3-handle-content node))
- ) ; case tag
- ) ; stringp content
- ) ; while content
- ) ; while content-stack
- )
- )
-
- (defun w3-draw-tree (tree)
- ;; The main entry point - wow complicated
- (setq w3-current-stylesheet w3-user-stylesheet)
- (while tree
- (w3-display-node (car tree))
- (setq tree (cdr tree)))
- (w3-display-fix-widgets)
- (let ((inhibit-read-only t))
- (w3-resurrect-images)
- (w3-resurrect-hyperlinks)
- (w3-form-resurrect-widgets)))
-
- (defun time-display (&optional tree)
- ;; Return the # of seconds it took to draw 'tree'
- (let ((st (nth 1 (current-time)))
- (nd nil))
- (w3-draw-tree (or tree w3-last-parse-tree))
- (setq nd (nth 1 (current-time)))
- (- nd st)))
-
-
- (defun w3-fixup-eol-faces ()
- ;; Remove 'face property at end of lines - underlining screws up stuff
- ;; also remove 'mouse-face property at the beginning and end of lines
- (let ((inhibit-read-only t))
- (save-excursion
- (goto-char (point-min))
- (while (re-search-forward "[ \t]*\n[ \t]*" nil t)
- (remove-text-properties (match-beginning 0) (match-end 0)
- '(face nil mouse-face nil) nil)))))
-
- (defsubst w3-finish-drawing ()
- (let (url glyph widget)
- (while w3-image-widgets-waiting
- (setq widget (car w3-image-widgets-waiting)
- w3-image-widgets-waiting (cdr w3-image-widgets-waiting)
- url (widget-get widget :src)
- glyph (cdr-safe (assoc url w3-graphics-list)))
- (condition-case nil
- (widget-value-set widget glyph)
- (error nil))))
- (if (and url-current-object (url-target url-current-object))
- (progn
- (push-mark (point) t)
- (w3-find-specific-link (url-target url-current-object)))
- (goto-char (point-min)))
- (and (not w3-running-xemacs)
- (not (eq (device-type) 'tty))
- (w3-fixup-eol-faces))
- (message "Drawing... done"))
-
- (defun w3-region (st nd)
- (if (not w3-setup-done) (w3-do-setup))
- (let* ((source (buffer-substring st nd))
- (w3-display-same-buffer t)
- (parse nil))
- (save-window-excursion
- (save-excursion
- (set-buffer (get-buffer-create " *w3-region*"))
- (erase-buffer)
- (insert source)
- (setq parse (w3-parse-buffer (current-buffer))))
- (narrow-to-region st nd)
- (delete-region (point-min) (point-max))
- (w3-draw-tree parse)
- (w3-finish-drawing)
- (widen))))
-
- (defun w3-refresh-buffer ()
- (interactive)
- (let ((parse w3-current-parse)
- (inhibit-read-only t)
- (w3-display-same-buffer t))
- (if (not parse)
- (error "Could not find the parse tree for this buffer. EEEEK!"))
- (erase-buffer)
- (w3-draw-tree parse)
- (w3-finish-drawing)
- (w3-mode)
- (set-buffer-modified-p nil)))
-
- (defun w3-prepare-buffer (&rest args)
- ;; The text/html viewer - does all the drawing and displaying of the buffer
- ;; that is necessary to go from raw HTML to a good presentation.
- (let* ((source (buffer-string))
- (source-buf (current-buffer))
- (parse (w3-parse-buffer source-buf)))
- (set-buffer-modified-p nil)
- (w3-draw-tree parse)
- (kill-buffer source-buf)
- (set-buffer-modified-p nil)
- (setq w3-current-source source
- w3-current-parse parse)
- (w3-finish-drawing)
- (w3-mode)
- (set-buffer-modified-p nil)
- (if url-keep-history
- (let ((url (url-view-url t)))
- (if (not url-history-list)
- (setq url-history-list (make-hash-table :size 131 :test 'equal)))
- (cl-puthash url (buffer-name) url-history-list)
- (if (fboundp 'w3-shuffle-history-menu)
- (w3-shuffle-history-menu)))))
- (w3-maybe-fetch-frames))
-
- (defun w3-maybe-fetch-frames ()
- (if w3-frameset-structure
- (cond ((or (eq w3-display-frames t)
- (and (eq w3-display-frames 'ask)
- (y-or-n-p "Fetch frames? ")))
- (w3-frames)
- t))))
-
- (defun w3-frames (&optional new-frame)
- "Set up and fetch W3 frames. With optional prefix, do so in a new frame."
- (interactive "P")
- (if (not w3-display-frames)
- (let ((w3-display-frames t))
- (w3-refresh-buffer)))
- (let* ((old-asynch (default-value 'url-be-asynchronous))
- (structure (reverse w3-frameset-structure)))
- (if new-frame
- (select-frame (make-frame)))
- (unwind-protect
- (progn
- (setq-default url-be-asynchronous nil)
- ;; set up frames
- (while structure
- (if (eq (car (car structure)) 'frameset)
- (setq structure (w3-display-frameset structure))
- (pop structure)))
- ;; compute target window distances
- (let ((origin-buffer (current-buffer))
- (stop nil))
- (while (not stop)
- (or w3-target-window-distances
- (setq w3-target-window-distances
- (w3-compute-target-window-distances)))
- (other-window 1)
- (if (eq (current-buffer) origin-buffer)
- (setq stop t)))))
- (setq-default url-be-asynchronous old-asynch))))
-
- (defun w3-frameset-dimensions-p (str)
- (and str (not (string-equal str "*")) (not (string-equal str "100%"))))
-
- (defun w3-display-frameset (frameset-structure)
- (let* ((structure frameset-structure)
- (frameset-cardinal (nth 1 (car structure)))
- (current-dims (cdr (cdr (car structure))))
- (cols (cdr-safe (assq 'cols current-dims)))
- (rows (cdr-safe (assq 'rows current-dims)))
- (char-width (if (> (frame-char-width) 1)
- (frame-char-width)
- w3-tty-char-width))
- (char-height (if (> (frame-char-height) 1)
- (frame-char-height)
- w3-tty-char-height)))
- (pop structure)
- ;; columns ?
- (if (w3-frameset-dimensions-p cols)
- (setq cols (w3-decode-frameset-dimensions
- cols (window-width) window-min-width char-width))
- ;; rows ?
- (if (w3-frameset-dimensions-p rows)
- (setq rows (w3-decode-frameset-dimensions
- rows (window-height) window-min-height char-height))
- ;; default: columns of equal width
- (let ((fwidth (/ (window-width) frameset-cardinal)))
- (while (> frameset-cardinal 0)
- (push fwidth cols)
- (setq frameset-cardinal (1- frameset-cardinal))))))
- (while (> frameset-cardinal 0)
- (cond ((cdr cols)
- (split-window-horizontally (car cols))
- (pop cols))
- ((cdr rows)
- (split-window-vertically (car rows))
- (pop rows)))
- (cond ((eq (car (car structure)) 'frame)
- (let ((href (nth 2 (car structure)))
- (name (nth 1 (car structure)))
- (url-working-buffer url-default-working-buffer) ; in case url-multiple-p is t
- (w3-notify 'semibully))
- (pop structure)
- (w3-fetch href)
- (let ((buf (current-buffer)))
- (set-buffer (url-buffer-visiting href))
- (setq w3-frame-name name
- w3-target-window-distances nil)
- (set-buffer buf))
- (other-window 1)))
- ((eq (car (car structure)) 'frameset)
- (setq structure (w3-display-frameset structure))))
- (setq frameset-cardinal (1- frameset-cardinal)))
- structure))
-
- (defun w3-compute-target-window-distances ()
- "Compute an alist of target names and window distances"
- (let ((origin-buffer (current-buffer))
- (distance 0)
- (stop nil)
- (window-distances nil))
- (while (not stop)
- (if w3-frame-name
- (push (cons (intern (downcase w3-frame-name)) distance)
- window-distances))
- (other-window 1)
- (setq distance (1+ distance))
- (if (eq (current-buffer) origin-buffer)
- (setq stop t)))
- window-distances))
-
- (defun w3-decode-frameset-dimensions (dims available-dimension min-dim pixel-dim)
- "Returns numbers of lines or columns in Emacs, computed from specified frameset dimensions"
- (let ((dimensions nil))
- (if dims
- (let ((nb-stars 0)
- (norm-stars 0)
- (remaining-available-dimension available-dimension))
- (while (string-match "\\([0-9]*\\*\\|[0-9]+%?\\)" dims)
- (let ((match (substring dims (match-beginning 1) (match-end 1))))
- (setq dims (substring dims (match-end 1)))
- (cond ((string-match "\\([0-9]+\\)\\*" match)
- ;; divide rest with relative weights
- (let ((weight (car (read-from-string
- (substring match (match-beginning 1) (match-end 1))))))
- (push (cons '* weight) dimensions)
- (setq nb-stars (1+ nb-stars)
- norm-stars (+ norm-stars weight))))
- ((string-match "\\*" match)
- ;; divide equally
- (push '* dimensions)
- (setq nb-stars (1+ nb-stars)
- norm-stars (1+ norm-stars)))
- (t
- (cond ((string-match "\\([0-9]+\\)%" match)
- ;; percentage of available height
- (push (/ (* (car (read-from-string (substring match 0 -1)))
- available-dimension)
- 100)
- dimensions))
- (t
- ;; absolute number: pixel height
- (push (max (1+ (/ (car (read-from-string match))
- pixel-dim))
- min-dim)
- dimensions)))
- (setq remaining-available-dimension
- (- remaining-available-dimension (car dimensions)))))))
- (if (zerop nb-stars)
- ;; push => reverse order
- (reverse dimensions)
- ;; substitute numbers for *
- (let ((star-replacement (/ remaining-available-dimension norm-stars))
- (star-dimensions dimensions))
- (setq dimensions nil)
- (while star-dimensions
- (push (cond ((eq '* (car star-dimensions))
- star-replacement)
- ((listp (car star-dimensions))
- (* (cdar star-dimensions) star-replacement))
- (t
- (car star-dimensions)))
- dimensions)
- (pop star-dimensions))
- ;; push + push => in order
- dimensions))))))
-
- (provide 'w3-display)
-