;;; Code:
-;; For Emacs <22.2 and XEmacs.
-(eval-and-compile
- (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
-
(eval-when-compile (require 'cl))
(require 'browse-url)
(unless (aref (char-category-set (make-char 'japanese-jisx0208 33 35)) ?>)
:group 'shr
:type 'regexp)
-(defcustom shr-table-line ?-
- "Character used to draw table line."
+(defcustom shr-table-horizontal-line ?-
+ "Character used to draw horizontal table lines."
+ :group 'shr
+ :type 'character)
+
+(defcustom shr-table-vertical-line ?|
+ "Character used to draw vertical table lines."
:group 'shr
:type 'character)
(defcustom shr-table-corner ?+
- "Character used to draw table corner."
+ "Character used to draw table corners."
:group 'shr
:type 'character)
(defcustom shr-hr-line ?-
- "Character used to draw hr line."
+ "Character used to draw hr lines."
:group 'shr
:type 'character)
(defun shr-browse-image ()
"Browse the image under point."
(interactive)
- (let ((url (get-text-property (point) 'shr-image)))
+ (let ((url (get-text-property (point) 'image-url)))
(if (not url)
(message "No image under point")
(message "Browsing %s..." url)
(defun shr-insert-image ()
"Insert the image under point into the buffer."
(interactive)
- (let ((url (get-text-property (point) 'shr-image)))
+ (let ((url (get-text-property (point) 'image-url)))
(if (not url)
(message "No image under point")
(message "Inserting %s..." url)
(nreverse result)))
(defun shr-descend (dom)
- (let ((function (intern (concat "shr-tag-" (symbol-name (car dom))) obarray)))
+ (let ((function (intern (concat "shr-tag-" (symbol-name (car dom))) obarray))
+ (style (cdr (assq :style (cdr dom))))
+ (start (point)))
+ (when (and style
+ (string-match "color" style))
+ (setq style (shr-parse-style style)))
(if (fboundp function)
(funcall function (cdr dom))
- (shr-generic (cdr dom)))))
+ (shr-generic (cdr dom)))
+ (when (consp style)
+ (shr-insert-background-overlay (cdr (assq 'background-color style))
+ start)
+ (shr-insert-foreground-overlay (cdr (assq 'color style))
+ start (point)))))
(defun shr-generic (cont)
(dolist (sub cont)
(aref elem 0)))))
(delete-char -1)))
(insert elem)
- (while (> (current-column) shr-width)
- (unless (prog1
- (shr-find-fill-point)
- (when (eq (preceding-char) ? )
- (delete-char -1))
- (insert "\n"))
- (put-text-property (1- (point)) (point) 'shr-break t)
- ;; No space is needed at the beginning of a line.
- (when (eq (following-char) ? )
- (delete-char 1)))
- (when (> shr-indentation 0)
- (shr-indent))
- (end-of-line))
- (insert " "))
+ (let (found)
+ (while (and (> (current-column) shr-width)
+ (progn
+ (setq found (shr-find-fill-point))
+ (not (eolp))))
+ (when (eq (preceding-char) ? )
+ (delete-char -1))
+ (insert "\n")
+ (unless found
+ (put-text-property (1- (point)) (point) 'shr-break t)
+ ;; No space is needed at the beginning of a line.
+ (when (eq (following-char) ? )
+ (delete-char 1)))
+ (when (> shr-indentation 0)
+ (shr-indent))
+ (end-of-line))
+ (insert " ")))
(unless (string-match "[ \t\n]\\'" text)
(delete-char -1)))))
"Browse the URL under point."
(interactive)
(let ((url (get-text-property (point) 'shr-url)))
- (if (not url)
- (message "No link under point")
- (browse-url url))))
+ (cond
+ ((not url)
+ (message "No link under point"))
+ ((string-match "^mailto:" url)
+ (browse-url-mailto url))
+ (t
+ (browse-url url)))))
(defun shr-save-contents (directory)
"Save the contents from URL in a file."
(let ((image (ignore-errors
(shr-rescale-image data))))
(when image
+ ;; When inserting big-ish pictures, put them at the
+ ;; beginning of the line.
+ (when (and (> (current-column) 0)
+ (> (car (image-size image t)) 400))
+ (insert "\n"))
(insert-image image (or alt "*"))))
(insert alt)))
;; url-cache-extract autoloads url-cache.
(declare-function url-cache-create-filename "url-cache" (url))
(autoload 'mm-disable-multibyte "mm-util")
+(autoload 'browse-url-mailto "browse-url")
(defun shr-get-image-data (url)
"Get image data for URL.
(search-forward "\r\n\r\n" nil t))
(buffer-substring (point) (point-max))))))
+(defun shr-image-displayer (content-function)
+ "Return a function to display an image.
+CONTENT-FUNCTION is a function to retrieve an image for a cid url that
+is an argument. The function to be returned takes three arguments URL,
+START, and END."
+ `(lambda (url start end)
+ (when url
+ (if (string-match "\\`cid:" url)
+ ,(when content-function
+ `(let ((image (funcall ,content-function
+ (substring url (match-end 0)))))
+ (when image
+ (goto-char start)
+ (shr-put-image image
+ (prog1
+ (buffer-substring-no-properties start end)
+ (delete-region start end))))))
+ (url-retrieve url 'shr-image-fetched
+ (list (current-buffer) start end)
+ t)))))
+
(defun shr-heading (cont &rest types)
(shr-ensure-paragraph)
(apply #'shr-fontize-cont cont types)
"Encode URL."
(browse-url-url-encode-chars url "[)$ ]"))
+(autoload 'shr-color-visible "shr-color")
+(autoload 'shr-color->hexadecimal "shr-color")
+
+(defun shr-color-check (fg bg)
+ "Check that FG is visible on BG.
+Returns (fg bg) with corrected values.
+Returns nil if the colors that would be used are the default
+ones, in case fg and bg are nil."
+ (when (or fg bg)
+ (let ((fixed (cond ((null fg) 'fg)
+ ((null bg) 'bg))))
+ ;; Convert colors to hexadecimal, or set them to default.
+ (let ((fg (or (shr-color->hexadecimal fg)
+ (frame-parameter nil 'foreground-color)))
+ (bg (or (shr-color->hexadecimal bg)
+ (frame-parameter nil 'background-color))))
+ (cond ((eq fixed 'bg)
+ ;; Only return the new fg
+ (list nil (cadr (shr-color-visible bg fg t))))
+ ((eq fixed 'fg)
+ ;; Invert args and results and return only the new bg
+ (list (cadr (shr-color-visible fg bg t)) nil))
+ (t
+ (shr-color-visible bg fg)))))))
+
+(defun shr-get-background (pos)
+ "Return background color at POS."
+ (dolist (overlay (overlays-in start (1+ start)))
+ (let ((background (plist-get (overlay-get overlay 'face)
+ :background)))
+ (when background
+ (return background)))))
+
+(defun shr-insert-foreground-overlay (fg start end)
+ (when fg
+ (let ((bg (shr-get-background start)))
+ (let ((new-colors (shr-color-check fg bg)))
+ (when new-colors
+ (overlay-put (make-overlay start end) 'face
+ (list :foreground (cadr new-colors))))))))
+
+(defun shr-insert-background-overlay (bg start)
+ "Insert an overlay with background color BG at START.
+The overlay has rear-advance set to t, so it will be used when
+text will be inserted at start."
+ (when bg
+ (let ((new-colors (shr-color-check nil bg)))
+ (when new-colors
+ (overlay-put (make-overlay start start nil nil t) 'face
+ (list :background (car new-colors)))))))
+
;;; Tag-specific rendering rules.
+(defun shr-tag-body (cont)
+ (let ((start (point))
+ (fgcolor (cdr (assq :fgcolor cont)))
+ (bgcolor (cdr (assq :bgcolor cont))))
+ (shr-insert-background-overlay bgcolor start)
+ (shr-generic cont)
+ (shr-insert-foreground-overlay fgcolor start (point))))
+
(defun shr-tag-p (cont)
(shr-ensure-paragraph)
(shr-indent)
(defun shr-parse-style (style)
(when style
+ (save-match-data
+ (when (string-match "\n" style)
+ (setq style (replace-match " " t t style))))
(let ((plist nil))
(dolist (elem (split-string style ";"))
(when elem
(cadr elem))
(let ((name (replace-regexp-in-string "^ +\\| +$" "" (car elem)))
(value (replace-regexp-in-string "^ +\\| +$" "" (cadr elem))))
+ (when (string-match " *!important\\'" value)
+ (setq value (substring value 0 (match-beginning 0))))
(push (cons (intern name obarray)
value)
plist)))))
(string-match shr-blocked-images url)))
(setq shr-start (point))
(let ((shr-state 'space))
- (if (> (length alt) 8)
- (shr-insert (substring alt 0 8))
+ (if (> (string-width alt) 8)
+ (shr-insert (truncate-string-to-width alt 8))
(shr-insert alt))))
((url-is-cached (shr-encode-url url))
(shr-put-image (shr-get-image-data url) alt))
t))))
(put-text-property start (point) 'keymap shr-map)
(put-text-property start (point) 'shr-alt alt)
- (put-text-property start (point) 'shr-image url)
+ (put-text-property start (point) 'image-url url)
+ (put-text-property start (point) 'image-displayer
+ (shr-image-displayer shr-content-function))
(put-text-property start (point) 'help-echo alt)
(setq shr-state 'image)))))
(shr-ensure-newline)
(insert (make-string shr-width shr-hr-line) "\n"))
+(defun shr-tag-title (cont)
+ (shr-heading cont 'bold 'underline))
+
+(defun shr-tag-font (cont)
+ (let ((start (point))
+ (color (cdr (assq :color cont))))
+ (shr-generic cont)
+ (shr-insert-foreground-overlay color start (point))))
+
;;; Table rendering algorithm.
;; Table rendering is the only complicated thing here. We do this by
(header (cdr (assq 'thead cont)))
(body (or (cdr (assq 'tbody cont)) cont))
(footer (cdr (assq 'tfoot cont)))
+ (bgcolor (cdr (assq :bgcolor cont)))
(nheader (if header (shr-max-columns header)))
(nbody (if body (shr-max-columns body)))
(nfooter (if footer (shr-max-columns footer))))
+ (shr-insert-background-overlay bgcolor (point))
(shr-tag-table-1
(nconc
(if caption `((tr (td ,@caption))))
max)))
(dotimes (i height)
(shr-indent)
- (insert "|\n"))
+ (insert shr-table-vertical-line "\n"))
(dolist (column row)
(goto-char start)
(let ((lines (nth 2 column))
(dolist (line lines)
(setq overlay-line (pop overlay-lines))
(end-of-line)
- (insert line "|")
+ (insert line shr-table-vertical-line)
(dolist (overlay overlay-line)
(let ((o (make-overlay (- (point) (nth 0 overlay) 1)
(- (point) (nth 1 overlay) 1)))
;; possibly.
(dotimes (i (- height (length lines)))
(end-of-line)
- (insert (make-string (string-width (car lines)) ? ) "|")
+ (insert (make-string (string-width (car lines)) ? )
+ shr-table-vertical-line)
(forward-line 1)))))
(shr-insert-table-ruler widths)))
(shr-indent))
(insert shr-table-corner)
(dotimes (i (length widths))
- (insert (make-string (aref widths i) shr-table-line) shr-table-corner))
+ (insert (make-string (aref widths i) shr-table-horizontal-line)
+ shr-table-corner))
(insert "\n"))
(defun shr-table-widths (table suggested-widths)
(nreverse trs)))
(defun shr-render-td (cont width fill)
- (with-temp-buffer
- (let ((cache (cdr (assoc (cons width cont) shr-content-cache))))
- (if cache
- (insert cache)
- (let ((shr-width width)
- (shr-indentation 0))
- (shr-generic cont))
- (delete-region
- (point)
- (+ (point)
- (skip-chars-backward " \t\n")))
- (push (cons (cons width cont) (buffer-string))
- shr-content-cache)))
- (goto-char (point-min))
- (let ((max 0))
- (while (not (eobp))
- (end-of-line)
- (setq max (max max (current-column)))
- (forward-line 1))
- (when fill
- (goto-char (point-min))
- ;; If the buffer is totally empty, then put a single blank
- ;; line here.
- (if (zerop (buffer-size))
- (insert (make-string width ? ))
- ;; Otherwise, fill the buffer.
- (while (not (eobp))
- (end-of-line)
- (when (> (- width (current-column)) 0)
- (insert (make-string (- width (current-column)) ? )))
- (forward-line 1))))
- (if fill
- (list max
- (count-lines (point-min) (point-max))
- (split-string (buffer-string) "\n")
- (shr-collect-overlays))
- (list max
- (shr-natural-width))))))
+ (let ((background (shr-get-background (point))))
+ (with-temp-buffer
+ (let ((cache (cdr (assoc (cons width cont) shr-content-cache))))
+ (if cache
+ (insert cache)
+ (shr-insert-background-overlay (or (cdr (assq :bgcolor cont))
+ background)
+ (point))
+ (let ((shr-width width)
+ (shr-indentation 0))
+ (shr-generic cont))
+ (delete-region
+ (point)
+ (+ (point)
+ (skip-chars-backward " \t\n")))
+ (push (cons (cons width cont) (buffer-string))
+ shr-content-cache)))
+ (goto-char (point-min))
+ (let ((max 0))
+ (while (not (eobp))
+ (end-of-line)
+ (setq max (max max (current-column)))
+ (forward-line 1))
+ (when fill
+ (goto-char (point-min))
+ ;; If the buffer is totally empty, then put a single blank
+ ;; line here.
+ (if (zerop (buffer-size))
+ (insert (make-string width ? ))
+ ;; Otherwise, fill the buffer.
+ (while (not (eobp))
+ (end-of-line)
+ (when (> (- width (current-column)) 0)
+ (insert (make-string (- width (current-column)) ? )))
+ (forward-line 1))))
+ (if fill
+ (list max
+ (count-lines (point-min) (point-max))
+ (split-string (buffer-string) "\n")
+ (shr-collect-overlays))
+ (list max
+ (shr-natural-width)))))))
(defun shr-natural-width ()
(goto-char (point-min))
projects / gnus / blobdiff