org-tree-slide: some small changes

org-tree-slide: some small changes

[Eric S Fraga]

[-- Attachment #1: Type: text/plain, Size: 1416 bytes --]

Dear Takaaki,

I have been playing with your org tree slide mode.  I really like it.

It didn't quite do what I wanted so I have played around with it.  I've
made a couple of simple changes which you may wish to consider
incorporating.  Specifically, I have added two hooks, one run just
before playing the slide show and one run when the slide show is
stopped.  This allows me to, for instance, turn off flyspell mode,
increase the text scale etc. for the actual slide show but revert these
back after I am finished showing the slides.

I realise that the play hook may duplicate the mode-hook you already had
defined but I couldn't get the latter to work.  It turns out that there
was a typographical error in =org-tree-slide-mode= in that it tried to
run the wrong hook (=org-mode-slide-mode-hook= instead of
=org-tree-slide-mode-hook=) but I only figured that out once I had added
my own hooks.  I have fixed that error as well but decided to leave the
hooks in place for the moment (I have to work on an actual talk now...).

Please see attached the slightly modified version of your code and an
example slide show which shows a couple of example hooks.  Please feel
free to incorporate any of the changes you wish, if any.

Thanks for an excellent little tool that is proving to be very useful to
me!

eric

-- 
: Eric S Fraga, GnuPG: 0xC89193D8FFFCF67D
: in Emacs 24.3.50.1 and Org release_7.9.3d-874-gf11acc

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #2: treeslide-demo.org --]
[-- Type: text/org, Size: 2530 bytes --]

#+TITLE:     Demonstration of org tree slide presentation
#+AUTHOR:    Eric S Fraga
#+EMAIL:     e.fraga@ucl.ac.uk
#+DATE:      2013-01-26 Sat

Start by executing (=C-c C-c=) this emacs lisp code which will set
things up correctly.  To play the slide, hit =F8=, aka =M-x
org-tree-slide-mode RET=.  To finish the slide show, hit =F8= again.  Use
=C-F8= to see the table of contents at any time; the table of contents
supports navigation.  Hit =<right>= to resume presentation with any
given slide.

#+begin_src emacs-lisp :results none
  (require 'org-tree-slide)
  (defun esf/play-org-tree-slide ()
    (auto-fill-mode t)
    (evil-emacs-state)
    (flyspell-mode-off)
    (org-preview-latex-fragment)
    (org-toggle-pretty-entities)
    (setq sentence-highlight-mode nil)
    (text-scale-set 5)
    (delete-other-windows)
    (message "ESF playing org tree slide"))
  (add-hook 'org-tree-slide-mode-play-hook 'esf/play-org-tree-slide)
  (defun esf/stop-org-tree-slide ()
    (auto-fill-mode t)
    (evil-normal-state)
    (flyspell-mode-on)
    (setq sentence-highlight-mode t)
    (text-scale-set 1)
    (message "ESF stopping org tree slide"))
  (add-hook 'org-tree-slide-mode-stop-hook 'esf/stop-org-tree-slide)
  (local-set-key (kbd "<f8>") 'org-tree-slide-mode)
  (local-set-key (kbd "C-<f8>") 'org-tree-slide-content)
  (local-set-key (kbd "S-<f8>") 'org-tree-slide-skip-done-toggle)
  (setq org-format-latex-options '(:foreground "white" :background "black" :scale 3 :html-foreground "Black" :html-background "Transparent" :html-scale 1.0 :matchers ("begin" "$1" "$" "$$" "\\(" "\\["))
        org-latex-create-formula-image-program 'imagemagick
        org-tree-slide-heading-emphasis t
        )
  ;;(org-tree-slide-mode)
#+end_src

Execute the following code when wanting to edit the slides in a more
normal environment:

#+begin_src emacs-lisp :results none
  (evil-normal-state)
  (flyspell-mode-on)
  (text-scale-set 1)
#+end_src

* Introduction

  - this is short.
  - but could be longer.
* Equations
 
  - probably do not work:

    \begin{align}
    y & = \sqrt {x} \\
    z &= \int_0^\infty t \, dt
    \end{align}

  - actually, they do work but I cannot seem to get the right
    background colour: FIXED!  Used ImageMagick in lieu of dvipng.

  - What about a different latex fragment, such as $x \in [0,1)$?

  - they even work inline if we look at \alpha and \beta.

* Images

  [[./mip.png]]

* Actions
  - Do something
  - And something else
* Assignments
  - Joe does this
  - Jill does something else

[-- Attachment #3: org-tree-slide.el --]
[-- Type: application/emacs-lisp, Size: 22464 bytes --]

Re: org-tree-slide: some small changes

[Takaaki ISHIKAWA]

Dear Eric,

Thank you for your feedback!
And I'm so glad to hear you like org-tree-slide.el.

I've just updated my code in Github.
The code includes the two hooks. On the other hand,
I deleted =org-mode-slide-mode-hook= because it did not work well.
I had to check the typo more carefully, sorry for that.

If you don't mind, I would like to add your name into the source code
as a contributor.

I Hope for the success of your talk ;-)

Best
Takaaki


On 2013/01/27, at 15:08, Eric S Fraga <e.fraga@ucl.ac.uk> wrote:

> Dear Takaaki,
> 
> I have been playing with your org tree slide mode.  I really like it.
> 
> It didn't quite do what I wanted so I have played around with it.  I've
> made a couple of simple changes which you may wish to consider
> incorporating.  Specifically, I have added two hooks, one run just
> before playing the slide show and one run when the slide show is
> stopped.  This allows me to, for instance, turn off flyspell mode,
> increase the text scale etc. for the actual slide show but revert these
> back after I am finished showing the slides.
> 
> I realise that the play hook may duplicate the mode-hook you already had
> defined but I couldn't get the latter to work.  It turns out that there
> was a typographical error in =org-tree-slide-mode= in that it tried to
> run the wrong hook (=org-mode-slide-mode-hook= instead of
> =org-tree-slide-mode-hook=) but I only figured that out once I had added
> my own hooks.  I have fixed that error as well but decided to leave the
> hooks in place for the moment (I have to work on an actual talk now...).
> 
> Please see attached the slightly modified version of your code and an
> example slide show which shows a couple of example hooks.  Please feel
> free to incorporate any of the changes you wish, if any.
> 
> Thanks for an excellent little tool that is proving to be very useful to
> me!
> 
> eric


--
Takaaki ISHIKAWA <takaxp@ieee.org>
GITI, Waseda University
    ( ' -')b http://about.me/takaxp

Re: org-tree-slide: some small changes

[Eric S Fraga]

Takaaki ISHIKAWA <takaxp@ieee.org> writes:

> Dear Eric,
>
> Thank you for your feedback!

You're very welcome.

> And I'm so glad to hear you like org-tree-slide.el.
>
> I've just updated my code in Github.
> The code includes the two hooks. On the other hand,
> I deleted =org-mode-slide-mode-hook= because it did not work well.
> I had to check the typo more carefully, sorry for that.

Thanks!  I'm glad you are happy with my suggested changes.

>
> If you don't mind, I would like to add your name into the source code
> as a contributor.

Sure, that would be fine.

> I Hope for the success of your talk ;-)

Thanks again!  I'm "facilitating" a workshop discussion and need to
update slides as I go along, hence my desire to use something more
interactive than my usual org->beamer->pdf route for talks.  Your
org-tree-slide mode seems to be ideal for this!  And I would hate to
have to struggle with powerpoint or its equivalent...

-- 
: Eric S Fraga, GnuPG: 0xC89193D8FFFCF67D
: in Emacs 24.3.50.1 and Org release_7.9.3d-891-gf52600

Re: org-tree-slide: some small changes

[Takaaki ISHIKAWA]

Dear Eric,
> > If you don't mind, I would like to add your name into the source code
> > as a contributor.
> 
> Sure, that would be fine.

Thank you! I'll add your name when I release the next version. 
> 
> > I Hope for the success of your talk ;-)
> 
> Thanks again! I'm "facilitating" a workshop discussion and need to
> update slides as I go along, hence my desire to use something more
> interactive than my usual org->beamer->pdf route for talks. Your
> org-tree-slide mode seems to be ideal for this! And I would hate to
> have to struggle with powerpoint or its equivalent...

 Yes, that's the point. In my case, I did not wanted to create a PPT/Keynote
for short presentations such as meeting report, brain storming, and programming lecture.
I believe that Org + org-tree-slide is very useful for collaboration works and saving time.
Feel free to request additional features.

Best,
Takaaki

--
Takaaki ISHIKAWA <takaxp@ieee.org>
  GITI, Waseda University
    ( ' -')b http://about.me/takaxp

Re: org-tree-slide: some small changes

[Eric S Fraga]

Takaaki ISHIKAWA <takaxp@ieee.org> writes:

> Feel free to request additional features.

Takaaki,

a few minor suggestions, and I mean *minor*, in case you get bored and
want to work on org-tree-slide mode ;-) :

- I would prefer if the title were shown as is, i.e. without adding
  []s.  If I want []s around the title, I can add them myself to the
  title.

- It would be nice to have a different customisable face used for the
  author, date, email line.

- Could the slide mode be configured to ignore subtrees with commented
  headings?  I often create various sections and then comment everything
  out (using =C-c ;=) except those sections that I would like
  presented.  You have something similar already for DONE items so an
  equivalent =org-tree-slide-skip-comments= configuration would be
  great!

But, as I said, these are minor.  The mode works very well as is.

thanks,
eric

-- 
: Eric S Fraga, GnuPG: 0xC89193D8FFFCF67D
: in Emacs 24.3.50.1 and Org release_7.9.3d-917-gb9c506

Re: org-tree-slide: some small changes

[Eric S Fraga]

Takaaki,

a couple of further suggestions:

- you change the faces org-level-2 and org-level-3.  This makes
  sense.  However, you use custom-set-faces which overwrites the user's
  own customisations permanently!  I think this is bad practice (I
  couldn't figure out why my faces had changed in other
  documents...).  Can you not simply change the face for that buffer
  ephemerally for the slide show?  I don't know enough emacs lisp to
  suggest how this would be done, mind you...

- it would be better, in my opinion, to use <prior> and <next> instead
  of <left> and <right> for moving from slide to slide.  I think this is
  more intuitive but, in any case, my main reason for wanting this is
  that I am using tree-slide-mode for an interactive session and I am
  editing the slides as the meeting progresses.  I naturally wish to use
  the arrow keys to move the cursor when editing whereas I am unlikely
  to use the paging keys.

Thanks,
eric

-- 
: Eric S Fraga, GnuPG: 0xC89193D8FFFCF67D
: in Emacs 24.3.50.1 and Org release_7.9.3d-898-g005917

Re: org-tree-slide: some small changes

[Takaaki ISHIKAWA]

Dear Eric,

Thank you for your kind suggestions.

1. Title without []s.

  Yes! That's right. I'll change it.

2. Custom header.

  Yes! Face control is the next feature that I currently plan.
  I'm trying to resize font so that I can use org-tree-slide in a
  high resolution display like HD(1080p). We can already use C-x C-- or
  C-x C-= by face-remap.el, but this is not sufficient for Japanese users.

3. Skip trees with comments (org-tree-slide-skip-comments).

  Good idea! I'll implement this feature soon.

4. Custom faces for headings.

  Oh… This is not my expected behavior. 
  When you exit the org-tree-slide mode, the default configurations would
  be restored by org-tree-slide-heading-level-2-init or -3-init.
  However, as you know, those changes will apply to all org-mode buffers
  at the same time! Is my understanding correct?
  
5. The default keybindings to moving slides.

  I agree, but I cannot change this because my english keyboard does not
  have the <Page Up> and <Page Down> key :-(
  I usually change the keybindings to <f9> and <f10> by the following setting.

#+begin_src emacs-lisp
  (define-key org-tree-slide-mode-map (kbd "<f9>")
    'org-tree-slide-move-previous-tree)
  (define-key org-tree-slide-mode-map (kbd "<f10>")
    'org-tree-slide-move-next-tree)
  (define-key org-tree-slide-mode-map (kbd "<left>") 'backward-char)
  (define-key org-tree-slide-mode-map (kbd "<right>") 'forward-char)
#+end_src

Best,
Takaaki

On 2013/02/03, at 12:04, Eric S Fraga <e.fraga@ucl.ac.uk> wrote:

> Takaaki,
> 
> a couple of further suggestions:
> 
> - you change the faces org-level-2 and org-level-3.  This makes
>  sense.  However, you use custom-set-faces which overwrites the user's
>  own customisations permanently!  I think this is bad practice (I
>  couldn't figure out why my faces had changed in other
>  documents...).  Can you not simply change the face for that buffer
>  ephemerally for the slide show?  I don't know enough emacs lisp to
>  suggest how this would be done, mind you...
> 
> - it would be better, in my opinion, to use <prior> and <next> instead
>  of <left> and <right> for moving from slide to slide.  I think this is
>  more intuitive but, in any case, my main reason for wanting this is
>  that I am using tree-slide-mode for an interactive session and I am
>  editing the slides as the meeting progresses.  I naturally wish to use
>  the arrow keys to move the cursor when editing whereas I am unlikely
>  to use the paging keys.
> 
> Thanks,
> eric
> 
> -- 
> : Eric S Fraga, GnuPG: 0xC89193D8FFFCF67D
> : in Emacs 24.3.50.1 and Org release_7.9.3d-898-g005917
> 

--
Takaaki ISHIKAWA <takaxp@ieee.org>
GITI, Waseda University
    ( ' -')b http://about.me/takaxp

Re: org-tree-slide: some small changes

[Eric S Fraga]

Takaaki ISHIKAWA <takaxp@ieee.org> writes:

> Dear Eric,
>
> Thank you for your kind suggestions.

You're very welcome!

[...]

> 4. Custom faces for headings.
>
>   Oh… This is not my expected behavior. 
>   When you exit the org-tree-slide mode, the default configurations would
>   be restored by org-tree-slide-heading-level-2-init or -3-init.
>   However, as you know, those changes will apply to all org-mode buffers
>   at the same time! Is my understanding correct?

I guess, then, it would be good to have face changes be optional.  I
have tried org-tree-slide-mode with all face changes commented out and
it works perfectly fine for me.  If you can wrap all such changes into a
conditional with a user customisable variable, I would be happy!

> 5. The default keybindings to moving slides.
>
>   I agree, but I cannot change this because my english keyboard does not
>   have the <Page Up> and <Page Down> key :-(

Ah, interesting!  I understand.  It's easy enough for me to re-map, as
you have suggested.

Thanks,
eric

-- 
: Eric S Fraga, GnuPG: 0xC89193D8FFFCF67D
: in Emacs 24.3.50.1 and Org release_7.9.3d-898-g005917