X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=org-show.el;fp=org-show.el;h=0000000000000000000000000000000000000000;hb=d7e351e11b8e6a101872670f9151f39a2500ac4b;hp=a1220d7b874c3a0ed02e7c667b51b7abe22cf765;hpb=297199fb6db3f6c253a8cc53b6cfdfc1e2b69ddd;p=org-ref.git

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-
-;;; org-show.el --- Summary
-;; Copyright(C) 2014 John Kitchin
-
-;; Author: John Kitchin <jkitchin@andrew.cmu.edu>
-;; Contributions from Sacha Chua.
-;; This file is not currently part of GNU Emacs.
-
-;; This program 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.
-
-;; This program 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 this program ; see the file COPYING.  If not, write to
-;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
-
-;;; Commentary:
-;; A simple mode for presenting org-files as slide-shows
-
-(defvar org-show-presentation-file nil "File containing the presentation.")
-(defvar org-show-slide-tag "slide" "Tag that marks slides.")
-(defvar org-show-slide-tag-regexp (concat ":" (regexp-quote org-show-slide-tag) ":"))
-(defvar org-show-latex-scale 4.0 "scale for latex preview")
-
-(defvar org-show-original-latex-scale
-  (plist-get org-format-latex-options :scale)
-  "Original scale for latex preview, so we can reset it.")
-
-(defvar org-show-text-scale 4 "scale for text in presentation")
-(defvar org-show-current-slide-number 1 "holds current slide number")
-
-(defvar org-show-mogrify-p (executable-find "mogrify"))
-
-(defvar org-show-tags-column -60 "column position to move tags to in slide mode")
-(defvar org-show-original-tags-column org-tags-column "Save value so we can change back to it")
-
-(when org-show-mogrify-p (require 'eimp))
-
-(require 'easymenu)
-
-(defvar org-show-mode-map
-  (let ((map (make-sparse-keymap)))
-    (define-key map [next] 'org-show-next-slide)
-    (define-key map [prior] 'org-show-previous-slide)
-    
-    (define-key map [f5] 'org-show-start-slideshow)
-    (define-key map [f6] 'org-show-execute-slide)
-    (define-key map (kbd "C--") 'org-show-decrease-text-size)
-    (define-key map (kbd "C-=") 'org-show-increase-text-size)
-    (define-key map (kbd "\e\eg") 'org-show-goto-slide)
-    (define-key map (kbd "\e\et") 'org-show-toc)
-    (define-key map (kbd "\e\eq") 'org-show-stop-slideshow)
-    map)
-  "Keymap for org-show-mode.")
-
-(easy-menu-define my-menu org-show-mode-map "My own menu"
-  '("org-show"
-    ["Start slide show" org-show-start-slideshow t]
-    ["Next slide" org-show-next-slide t]
-    ["Previous slide" org-show-previous-slide t]
-    ["Open this slide" org-show-open-slide t]
-    ["Goto slide" org-show-goto-slide t]
-    ["Table of contents" org-show-toc t]
-    ["Stop slide show"  org-show-stop-slideshow t]
-))
-
-
-(define-minor-mode org-show-mode
-  "Minor mode for org-show
-
-\\{org-show-mode-map}"
-  :lighter " org-show"
-  :global t
-  :keymap org-show-mode-map)
-
-(defvar org-show-temp-images '() "list of temporary images")
-
-(defun org-show-execute-slide ()
-  "Process slide at point.
-  If it contains an Emacs Lisp source block, evaluate it.
-  If it contains an image, view it in a split buffer
-  Else, focus on that buffer.
-  Hide all drawers."
-  (interactive)
-  (setq org-show-presentation-file (expand-file-name (buffer-name)))
-  (delete-other-windows)  
-
-  ;; make sure nothing is folded. This seems to be necessary to
-  ;; prevent an error on narrowing then trying to make latex fragments
-  ;; I think.
-  (org-cycle '(64))
-
-  (org-narrow-to-subtree)
-  (visual-line-mode 1)
-  (let ((heading-text (nth 4 (org-heading-components)))
-        (org-format-latex-options (plist-put org-format-latex-options :scale org-show-latex-scale)))
-
-    (set-frame-name (format "%-180s%15s%s" heading-text "slide " (cdr (assoc heading-text org-show-slide-titles))))
-
-    ;; preview equations in the current subtree
-    (org-preview-latex-fragment '(4))
-    (message "") ; clear minibuffer
-    (cond
-
-     ;; view images if there is one. WE only do this this for the first one.
-     ((and (goto-char (point-min))
-           (re-search-forward "\\[\\[\\(.*\\.\\(jpg\\|gif\\|png\\)\\)" nil t))
-      
-      (unless (file-exists-p "org-show-images")
-	(make-directory "org-show-images"))
-      
-      (let* ((png-file (match-string 1))
-	     (temp-png (expand-file-name (concat "org-show-images/" (secure-hash 'sha1
-					    (with-temp-buffer
-					      (insert-file-contents png-file)
-					      (buffer-string))) ".png"))))
-
-        (add-to-list 'org-show-temp-images temp-png)
-	(unless (file-exists-p temp-png)
-	  (copy-file png-file temp-png t))
-      
-	(split-window-right)      
-      
-	(other-window 1)
-	(find-file temp-png)
-        (when org-show-mogrify-p
-          (eimp-fit-image-width-to-window nil)))
-                  
-      (other-window 1) ; back to slide
-      (goto-char (point-min))
-      (text-scale-set org-show-text-scale)
-      (org-display-inline-images)
-      (org-cycle-hide-drawers t)
-      (org-show-subtree))
-
-     ;; find and execute source code blocks.
-     ;; you can either have images, or code. Not both.
-     ;; Only code blocks of type emacs-lisp-slide are used.
-     ((and (goto-char (point-min))
-           (re-search-forward "#\\+begin_src emacs-lisp-slide" nil t))
-      (let ((info (org-babel-get-src-block-info)))
-        (unwind-protect
-            (eval (read (concat "(progn " (nth 1 info) ")"))))))
-
-     ;; plain text slides
-     (t
-      (switch-to-buffer (current-buffer))
-      (text-scale-set org-show-text-scale)
-      (org-show-subtree)
-      (org-cycle-hide-drawers t)
-      (org-display-inline-images)
-      (delete-other-windows)))))
-
-(defun org-show-next-slide ()
-  "Goto next slide in presentation"
-  (interactive)
-  (find-file org-show-presentation-file)
-  (widen)
-  (if (<= (+ org-show-current-slide-number 1) (length org-show-slide-titles))
-      (progn
-	(setq org-show-current-slide-number (+ org-show-current-slide-number 1))
-	(org-show-goto-slide org-show-current-slide-number))
-    (org-show-goto-slide org-show-current-slide-number)
-    (message "This is the end. My only friend the end.  Jim Morrison.")))
-
-(defun org-show-previous-slide ()
-  "Goto previous slide in the list"
-  (interactive)
-  (find-file org-show-presentation-file)
-  (widen)
-  (if (> (- org-show-current-slide-number 1) 0)
-      (progn
-	(setq org-show-current-slide-number (- org-show-current-slide-number 1))
-	(org-show-goto-slide org-show-current-slide-number))
-    (org-show-goto-slide org-show-current-slide-number)
-    (message "Once upon a time...")))
-
-(defun org-show-open-slide ()
- "Start show at this slide"
- (setq org-show-presentation-file (expand-file-name (buffer-name))) 
- (org-show-initialize)
- (let ((n (cdr (assoc (nth 4 (org-heading-components)) org-show-slide-titles))))
-   (setq org-show-current-slide-number n)
-   (org-show-goto-slide n)))
-
-(defvar org-show-slide-list '() "List of slide numbers and markers to each slide")
-(defvar org-show-slide-titles '() "List of titles and slide numbers for each slide")
-
-(defun org-show-initialize ()
-  ;; make slide lists for future navigation. rerun this if you change slide order
-  (setq  org-show-slide-titles '()
-         org-show-temp-images '()
-         org-show-slide-list '())
-     
-  (let ((n 0))
-    (org-map-entries
-     (lambda ()
-       (when (string-match-p ":slide:" (or (nth 5 (org-heading-components)) ""))
-	 (setq n (+ n 1))
-         
-	 (add-to-list 'org-show-slide-titles 
-		      (cons (nth 4 (org-heading-components)) n) t)
-
-	 (add-to-list 'org-show-slide-list 
-		      (cons n (set-marker (make-marker) (point))) t))))))
-
-(defun org-show-start-slideshow ()
-  "Start the slide show, at the beginning"
-  (interactive)
-    
-  (setq org-show-presentation-file (expand-file-name (buffer-name)))
-  (beginning-of-buffer)
-  (setq org-tags-column org-show-tags-column)
-  (org-set-tags-command '(4) t)
-
-  (org-show-initialize)
-  ;; hide slide tags
-  (save-excursion
-    (while (re-search-forward ":slide:" nil t)
-      (overlay-put
-       (make-overlay (match-beginning 0)(match-end 0))
-       'invisible 'slide)))
-  (add-to-invisibility-spec 'slide)
-  (beginning-of-buffer)
-  (delete-other-windows)
-  (org-show-mode 1)
-  (setq org-show-current-slide-number 1)
-  (org-show-goto-slide 1))
-
-(defun org-show-stop-slideshow ()
-  (interactive)
-  ;; make slide tag visible again
-  (remove-from-invisibility-spec 'slide)
-
-  ;; reset latex scale
-  (plist-put org-format-latex-options :scale org-show-original-latex-scale)
-
-  ;; clean up temp images
-  (mapcar (lambda (x)
-	    (let ((bname (file-name-nondirectory x)))
-	      (when (get-buffer bname)
-                (set-buffer bname) 
-                (save-buffer)
-		(kill-buffer bname)))
-
-	    (when (file-exists-p x)
-	      (delete-file x)))
-	  org-show-temp-images)
-  (setq org-show-temp-images '())
-
-  ;; ;; clean up miscellaneous buffers
-  (when (get-buffer "*Animation*") (kill-buffer "*Animation*"))
-
-  (when org-show-presentation-file (find-file org-show-presentation-file))
-  (widen)
-  (text-scale-set 0)
-  (delete-other-windows)
-  (setq org-show-presentation-file nil)
-  (setq org-show-current-slide-number 1)
-  (set-frame-name (if (buffer-file-name)
-                   (abbreviate-file-name (buffer-file-name))))
-  (setq org-tags-column org-show-original-tags-column)
-  (org-set-tags-command '(4) t)
-
-  (org-show-mode -1))
-
-(defalias 'stop 'org-show-stop-slideshow)
-
-(defun org-show-goto-slide (n)
- "Goto slide N"
- (interactive "nSlide number: ")
- (message "Going to slide %s" n)
- (find-file org-show-presentation-file)
- (setq org-show-current-slide-number n)
- (widen)
- (goto-char (cdr (assoc n org-show-slide-list)))
- (org-show-execute-slide))
-
-(defun org-show-toc ()
-  (interactive)
-  (let ((links) (c-b (buffer-name)) (n))
-    (save-excursion
-      (widen)
-      (mapcar
-       (lambda (x)
-	 (setq n (car x))
-	 (goto-char (cdr x))
-	 (add-to-list
-	  'links
-	  (format " [[elisp:(progn (switch-to-buffer \"%s\")(goto-char %s)(org-show-execute-slide))][%2s %s]]\n\n"
-		  (marker-buffer (cdr x))
-		  (marker-position (cdr x))
-		  (car x)
-		  (nth 4 (org-heading-components))) t))
-	      org-show-slide-list))
-    
-    (switch-to-buffer "*List of Slides*")
-    (org-mode)
-    (erase-buffer)
-    
-    (insert (mapconcat 'identity links ""))
-  
-    ;(setq buffer-read-only t)
-    (use-local-map (copy-keymap org-mode-map))
-    (local-set-key "q" #'(lambda () (interactive) (kill-buffer)))))
-
-(require 'animate)
-
-(defun org-show-animate (strings)
-  "Animate STRINGS in an *Animation* buffer"
-  (switch-to-buffer (get-buffer-create
-                     (or animation-buffer-name
-                         "*Animation*")))
-  (erase-buffer)
-  (text-scale-set 6)
-  (let* ((vpos (/ (- 20
-		     1 ;; For the mode-line
-		     (1- (length strings)) 
-		     (length strings))
-		  2))
-	 (width 43)
-	 hpos)
-    (while strings
-      (setq hpos (/ (- width (length (car strings))) 2))
-      (when (> 0 hpos) (setq hpos 0))
-      (when (> 0 vpos) (setq vpos 0))
-      (animate-string (car strings) vpos hpos)
-      (setq vpos (1+ vpos))
-      (setq strings (cdr strings)))))
-
-(defun org-show-increase-text-size (&optional arg)
-  "Increase text size. Bound to \\[org-show-increase-text-size].
-
-With prefix ARG, set `org-show-text-scale' so subsquent slides are the same text size."
-  (interactive "P")
-  (text-scale-increase 1.5)
-  (when arg
-    (setq org-show-text-scale (* org-show-text-scale 1.5))))
-
-(defun org-show-decrease-text-size (&optional arg)
-  "Increase text size. Bound to \\[org-show-decrease-text-size].
-
-With prefix ARG, set `org-show-text-scale' so subsquent slides are the same text size."
-  (interactive "P")
-  (text-scale-decrease 1.5)
-  (when arg
-    (setq org-show-text-scale (/ org-show-text-scale 1.5)))
-)
-
-(provide 'org-show)