Change `org-toggle-latex-fragment' behaviour
* lisp/org.el (org-remove-latex-fragment-image-overlays): Allow to
limit overlay removal through optional arguments. Define a new
return value.
(org-toggle-latex-fragment): Change behaviour. Update docstring
accordingly.
(org-format-latex): Update docstring. Remove overlay when LaTeX
fragment is deleted.
* etc/ORG-NEWS: Signal change.
The new behaviour is the following:
- With a double prefix argument or with a single prefix argument
when point is before the first headline, toggle overlays in the
whole buffer;
- With a single prefix argument, toggle overlays in the current
subtree;
- On latex code, toggle overlay at point;
- Otherwise, toggle overlays in the current section.
Suggested-by: <kuangdash@163.com>
<http://permalink.gmane.org/gmane.emacs.orgmode/95492>
This commit is contained in:
Nicolas Goaziou
parent
4fcc7d1a35
commit
1362c2d22b
14
etc/ORG-NEWS
14
etc/ORG-NEWS
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@ -120,6 +120,20 @@ end-users browser. You may force initial usage of MathML via
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~org-html-mathjax-template~ or by setting the ~path~ property of
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~org-html-mathjax-options~.
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** New features
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*** New behaviour for `org-toggle-latex-fragment'.
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The new behaviour is the following:
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- With a double prefix argument or with a single prefix argument
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when point is before the first headline, toggle overlays in the
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whole buffer;
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- With a single prefix argument, toggle overlays in the current
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subtree;
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- On latex code, toggle overlay at point;
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- Otherwise, toggle overlays in the current section.
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*** Additional markup with =#+INCLUDE= keyword
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The content of the included file can now be optionally marked up, for
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instance as HTML. See the documentation for details.
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129
lisp/org.el
129
lisp/org.el
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@ -18748,77 +18748,119 @@ looks only before point, not after."
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"List of overlays carrying the images of latex fragments.")
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(make-variable-buffer-local 'org-latex-fragment-image-overlays)
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(defun org-remove-latex-fragment-image-overlays ()
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"Remove all overlays with LaTeX fragment images in current buffer."
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(mapc 'delete-overlay org-latex-fragment-image-overlays)
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(setq org-latex-fragment-image-overlays nil))
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(defun org-remove-latex-fragment-image-overlays (&optional beg end)
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"Remove all overlays with LaTeX fragment images in current buffer.
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When optional arguments BEG and END are non-nil, remove all
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overlays between them instead. Return t when some overlays were
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removed, nil otherwise."
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(let (removedp)
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(setq org-latex-fragment-image-overlays
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(let ((beg (or beg (point-min)))
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(end (or end (point-max))))
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(org-remove-if
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(lambda (o)
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(and (>= (overlay-start o) beg)
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(<= (overlay-end o) end)
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(progn (delete-overlay o)
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(or removedp (setq removedp t)))))
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org-latex-fragment-image-overlays)))
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removedp))
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(define-obsolete-function-alias
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'org-preview-latex-fragment 'org-toggle-latex-fragment "24.4")
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(defun org-toggle-latex-fragment (&optional subtree)
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(defun org-toggle-latex-fragment (&optional arg)
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"Preview the LaTeX fragment at point, or all locally or globally.
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If the cursor is in a LaTeX fragment, create the image and overlay
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it over the source code. If there is no fragment at point, display
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all fragments in the current text, from one headline to the next. With
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prefix SUBTREE, display all fragments in the current subtree. With a
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double prefix arg \\[universal-argument] \\[universal-argument], or when \
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the cursor is before the first headline,
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display all fragments in the buffer.
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The images can be removed again with \\[org-toggle-latex-fragment]."
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If the cursor is on a LaTeX fragment, create the image and overlay
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it over the source code, if there is none. Remove it otherwise.
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If there is no fragment at point, display all fragments in the
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current section.
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With prefix ARG, preview or clear image for all fragments in the
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current subtree or in the whole buffer when used before the first
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headline. With a double prefix ARG \\[universal-argument] \
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\\[universal-argument] preview or clear images
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for all fragments in the buffer."
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(interactive "P")
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(unless (buffer-file-name (buffer-base-buffer))
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(user-error "Can't preview LaTeX fragment in a non-file buffer"))
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(if org-latex-fragment-image-overlays
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(progn (org-remove-latex-fragment-image-overlays)
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(message "LaTeX fragments images removed"))
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(when (display-graphic-p)
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(org-remove-latex-fragment-image-overlays)
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(org-with-wide-buffer
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(let (beg end msg)
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(catch 'exit
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(save-excursion
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(let ((window-start (window-start)) msg)
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(save-restriction
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(cond
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((equal subtree '(16))
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(setq beg (point-min) end (point-max)
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msg "Creating images for buffer...%s"))
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((equal subtree '(4))
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(org-back-to-heading)
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(setq beg (point) end (org-end-of-subtree t)
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msg "Creating images for subtree...%s"))
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((let ((context (org-element-context)))
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(when (memq (org-element-type context)
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((or (equal arg '(16))
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(and (equal arg '(4))
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(org-with-limited-levels (org-before-first-heading-p))))
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(if (org-remove-latex-fragment-image-overlays)
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(progn (message "LaTeX fragments images removed from buffer")
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(throw 'exit nil))
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(setq msg "Creating images for buffer...")))
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((equal arg '(4))
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(org-with-limited-levels (org-back-to-heading t))
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(let ((beg (point))
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(end (progn (org-end-of-subtree t) (point))))
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(if (org-remove-latex-fragment-image-overlays beg end)
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(progn
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(message "LaTeX fragment images removed from subtree")
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(throw 'exit nil))
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(setq msg "Creating images for subtree...")
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(narrow-to-region beg end))))
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((let ((datum (org-element-context)))
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(when (memq (org-element-type datum)
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'(latex-environment latex-fragment))
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(setq beg (org-element-property :begin context)
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end (org-element-property :end context)
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msg "Creating image...%s"))))
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((org-before-first-heading-p)
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(setq beg (point-min) end (point-max)
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msg "Creating images for buffer...%s"))
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(t
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(org-back-to-heading)
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(setq beg (point) end (progn (outline-next-heading) (point))
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msg "Creating images for entry...%s")))
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(message msg "")
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(let* ((beg (org-element-property :begin datum))
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(end (org-element-property :end datum)))
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(if (org-remove-latex-fragment-image-overlays beg end)
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(progn (message "LaTeX fragment image removed")
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(throw 'exit nil))
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(narrow-to-region beg end)
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(goto-char beg)
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(setq msg "Creating image..."))))))
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(t
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(org-with-limited-levels
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(let ((beg (if (org-at-heading-p) (line-beginning-position)
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(outline-previous-heading)
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(point)))
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(end (progn (outline-next-heading) (point))))
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(if (org-remove-latex-fragment-image-overlays beg end)
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(progn
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(message "LaTeX fragment images removed from section")
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(throw 'exit nil))
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(setq msg "Creating images for section...")
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(narrow-to-region beg end))))))
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(org-format-latex
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(concat org-latex-preview-ltxpng-directory
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(file-name-sans-extension
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(file-name-nondirectory
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(buffer-file-name (buffer-base-buffer)))))
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default-directory 'overlays msg 'forbuffer
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org-latex-create-formula-image-program)
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(message msg "done. Use `C-c C-x C-l' to remove images."))))))
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org-latex-create-formula-image-program))
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;; Work around a bug that doesn't restore window's start
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;; when widening back the buffer.
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(set-window-start nil window-start)
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(message (concat msg "done")))))))
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(defun org-format-latex
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(prefix &optional dir overlays msg forbuffer processing-type)
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"Replace LaTeX fragments with links to an image, and produce images.
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When optional argument OVERLAYS is non-nil, display the image on
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top of the fragment instead of replacing it.
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PROCESSING-TYPE is the conversion method to use, as a symbol.
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Some of the options can be changed using the variable
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`org-format-latex-options'."
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`org-format-latex-options', which see."
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(when (and overlays (fboundp 'clear-image-cache)) (clear-image-cache))
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(unless (eq processing-type 'verbatim)
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(let* ((math-regexp "\\$\\|\\\\[([]\\|^[ \t]*\\\\begin{[A-Za-z0-9*]+}")
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(cnt 0)
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checkdir-flag)
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(goto-char (point-min))
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;; Optimize overlay creation: (info "(elisp) Managing Overlays").
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(when (and overlays (memq processing-type '(dvipng imagemagick)))
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(overlay-recenter (point-max)))
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(while (re-search-forward math-regexp nil t)
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(unless (and overlays
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(eq (get-char-property (point) 'org-overlay-type)
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@ -18893,6 +18935,7 @@ Some of the options can be changed using the variable
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(overlay-put ov
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'org-overlay-type
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'org-latex-overlay)
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(overlay-put ov 'evaporate t)
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(if (featurep 'xemacs)
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(progn
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(overlay-put ov 'invisible t)
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