Re: Property inheritance in beamer export [7.4]

[Carsten Dominik <carsten.dominik@gmail.com>]

Hi Chris,

On 11.11.2011, at 05:34, Chris Kauffman wrote:

> 
> I use org for constructing simple slide presentations quite a
> bit.  I'd like to be able to set a global property which shrinks
> all text to fit in the allotted space; this is great for source
> examples.

Have you read the beamer documentation?  After reading about
shrink, do you still mean to apply this evil thing?   :)

> After some experimentation I put
> 
> #+PROPERTY: BEAMER_envargs [shrink]
> 
> in the preamble and evaluated
> 
> (set-variable (quote org-use-property-inheritance) t nil)
> 
> According to my understanding of the documentation, this should
> make very outline entry inherit the property BEAMER_envargs,
> regardless of whether it has a properties list itself.

Yes, I agree this is what the documentation looks like.  However, the
imlementation of org-beamer.el only looks at the local properties.
TO speed up processing, Org grabs all properties at each headline
and stores them - without inheritance.

> After
> reloading the file, internally this seems to work fine: I move to
> any heading and eval the following lisp
> 
> (org-entry-get (point) "BEAMER_envargs" 1)
> 
> which gives the result "[shrink]".
> 
> However, on exporting the org file to pdf, the shrinking does not
> seem to happen. The source code runs off the page. Is property
> inheritance not respected during export?

Could you please set in .emacs

(setq org-beamer-inherited-properties '("BEAMER_envargs"))

and then try the following experimental patch

-----------------------------------------------------------------------------------------
diff --git a/lisp/org-beamer.el b/lisp/org-beamer.el
index 118aa75..2208c60 100644
--- a/lisp/org-beamer.el
+++ b/lisp/org-beamer.el
@@ -482,4 +482,10 @@ The effect is that these values will be accessible during export."
		    (looking-at ".*?:B_\\(note\\(NH\\)?\\):"))
	       (push (cons "BEAMER_env" (match-string 1)) props))
+	   (when (org-bound-and-true-p org-beamer-inherited-properties)
+	     (mapc (lambda (p)
+		     (unless (assoc p props)
+		       (let ((v (org-entry-get nil p 'inherit)))
+			 (and v (push (cons p v) props)))))	      
+		   org-beamer-inherited-properties))
	   (put-text-property (point-at-bol) (point-at-eol) 'org-props props)))
       (setq org-export-latex-options-plist
-----------------------------------------------------------------------------------------

- Carsten

> 
> Cheers,
> Chris
> 
> --Example .org File---
> #+TITLE:     Java Lecture
> #+AUTHOR:    Christopher Kauffman
> #+EMAIL:     kauffman77@gmail.com
> #+LANGUAGE:  en
> #+OPTIONS:   H:3 num:t toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
> #+OPTIONS:   TeX:t LaTeX:nil skip:nil d:nil todo:t pri:nil tags:not-in-toc
> #+INFOJS_OPT: view:nil toc:nil ltoc:t mouse:underline buttons:0 
> path:http://orgmode.org/org-info.js
> #+EXPORT_SELECT_TAGS: export
> #+EXPORT_EXCLUDE_TAGS: noexport
> #+STARTUP: beamer
> #+STARTUP: showall
> #+LaTeX_CLASS: beamer
> #+BEAMER_FRAME_LEVEL: 1
> #+PROPERTY: BEAMER_envargs [shrink]
> 
> * Example
> Want this shrink
> #+BEGIN_SRC java
> public class Mouse{
>   private int age = 0;              // age of mouse in days
>   private double weight = 1.0;      // weight of mouse in grams
>   private double percentGrowthRate; // % weight increase per day
> 
>   // This method assigns the mouse's percent growth rate.
>   public void setPercentGrowthRate(double percentGrowthRate) {
>     this.percentGrowthRate = percentGrowthRate;
>   }
> 
>   // This method simulates one day of growth for the mouse.
>   public void grow() {
>     this.weight += (.01 * this.percentGrowthRate * this.weight);
>     this.age++;
>   }
> 
>   // This method prints the mouses's age and weight.
>   public void display() {
>     System.out.printf(
>       "Age = %d, weight = %.3f\n", this.age, this.weight);
>   }
> } 
> #+END_SRC
> 
> * Example
> :PROPERTIES:
> :BEAMER_envargs: [shrink]
> :END:
> 
> Must add properties every time
> #+BEGIN_SRC java
> public class Mouse{
>   private int age = 0;              // age of mouse in days
>   private double weight = 1.0;      // weight of mouse in grams
>   private double percentGrowthRate; // % weight increase per day
> 
>   // This method assigns the mouse's percent growth rate.
>   public void setPercentGrowthRate(double percentGrowthRate) {
>     this.percentGrowthRate = percentGrowthRate;
>   }
> 
>   // This method simulates one day of growth for the mouse.
>   public void grow() {
>     this.weight += (.01 * this.percentGrowthRate * this.weight);
>     this.age++;
>   }
> 
>   // This method prints the mouses's age and weight.
>   public void display() {
>     System.out.printf(
>       "Age = %d, weight = %.3f\n", this.age, this.weight);
>   }
> } 
> #+END_SRC
> 
> --END EXAMPLE-
> 
> current state:
> ==============
> (setq org-export-latex-after-initial-vars-hook
> '(org-beamer-after-initial-vars) org-speed-command-hook
> '(org-speed-command-default-hook org-babel-speed-command-hook)
> org-agenda-files '("~/mypubs/worklog") org-agenda-window-setup
> 'other-window org-metaup-hook '(org-babel-load-in-session-maybe)
> org-after-todo-state-change-hook '(org-clock-out-if-current)
> org-export-blocks-postblock-hook '(org-exp-res/src-name-cleanup)
> org-export-latex-format-toc-function
> 'org-export-latex-format-toc-default org-tab-first-hook
> '(org-hide-block-toggle-maybe org-src-native-tab-command-maybe
> org-babel-hide-result-toggle-maybe) org-src-mode-hook
> '(org-src-babel-configure-edit-buffer
> org-src-mode-configure-edit-buffer)
> org-confirm-shell-link-function 'yes-or-no-p
> org-export-first-hook '(org-beamer-initialize-open-trackers)
> org-agenda-before-write-hook '(org-agenda-add-entry-text)
> outline-mode-hook '((lambda nil
> 		      (local-set-key "\356" (quote
> 		      outline-next-visible-heading))
> 		      (local-set-key "\360" (quote
> 		      outline-previous-visible-heading))
> 		      (local-set-key (quote [f12]) (quote
> 		     ck-outline-toggle))) )
> 		     org-babel-pre-tangle-hook '(save-buffer)
> 		     org-cycle-hook
> 		     '(org-cycle-hide-archived-subtrees
> 		     org-cycle-hide-drawers
> 		     org-cycle-show-empty-lines
> 		     org-optimize-window-after-visibility-change)
> 		     org-export-preprocess-before-normalizing-links-hook
> 		     '(org-remove-file-link-modifiers)
> 		     org-mode-hook '((lambda
> 		     nil (local-set-key "\x03d" (quote
> 		     insert-date-heading))
> 		  (local-set-key "\x03\x01" (quote org-agenda))
> 		  (local-set-key "\232" (quote format-float-column))
> 		  (local-set-key "\x03e" (quote org-example))
> 		  (local-set-key "\x03v" (quote org-verbatim))
> 		  (local-set-key "\x03q" (quote org-quote)) (auto-fill-mode 1)
> 		  (setq org-agenda-window-setup (quote
> 		 other-window)))
> 		 #[nil "\300\301\302\303\304$\207" [org-add-hook
> 		 change-major-mode-hook org-show-block-all append
> 		 local] 5] #[nil "\300\301\302\303\304$\207"
> 		 [org-add-hook change-major-mode-hook
> 		 org-babel-show-result-all append local] 5]
> 		 org-babel-result-hide-spec
> 		 org-babel-hide-all-hashes)
> 		 org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
> 		 org-babel-execute-safely-maybe)
> 		 org-confirm-elisp-link-function 'yes-or-no-p
> 		 org-export-interblocks '((lob
> 		 org-babel-exp-lob-one-liners)
> 			  (src org-babel-exp-inline-src-blocks))
> org-occur-hook '(org-first-headline-recenter)
> org-from-is-user-regexp "\\<kauffman\\>"
> org-export-preprocess-before-selecting-backend-code-hook
> '(org-beamer-select-beamer-code) org-export-latex-final-hook
> '(org-beamer-amend-header org-beamer-fix-toc
> org-beamer-auto-fragile-frames
> org-beamer-place-default-actions-for-lists) org-metadown-hook
> '(org-babel-pop-to-session-maybe) org-export-blocks '((src
> org-babel-exp-src-blocks nil)
> 		     (comment org-export-blocks-format-comment t)
> 		     (ditaa org-export-blocks-format-ditaa nil)
> 		     (dot org-export-blocks-format-dot nil))
> )
> 
> 
>