[Libreoffice-bugs] [Bug 88744] Visual formula editor does not use system clipboard

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

⁨خالد حسني⁩  changed:

   What|Removed |Added

 Status|NEW |ASSIGNED
   Assignee|libreoffice-b...@lists.free |kha...@libreoffice.org
   |desktop.org |
Summary|Experimental Visual formula |Visual formula editor does
   |editor does not link to |not use system clipboard
   |system clipboard, also is   |
   |missing Copy and Cut|
   |buttons in its selection|
   |context menu (see comment   |
   |16) |

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu (see comment 16)

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https://bugs.documentfoundation.org/show_bug.cgi?id=88744

⁨خالد حسني⁩  changed:

   What|Removed |Added

 CC||kha...@libreoffice.org

--- Comment #21 from ⁨خالد حسني⁩  ---
The greyed out menu items/toolbar buttons now work
(https://gerrit.libreoffice.org/c/core/+/156513). The context menu is probably
not important, so I’m ignoring that part (if needed, it should be a separate
issue).

The integration with clipboard as an issue, though. One can copy/paste inside
the Math, but not to/from clipboard.

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu (see comment 16)

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https://bugs.documentfoundation.org/show_bug.cgi?id=88744

Xisco Faulí  changed:

   What|Removed |Added

 Whiteboard|summary:comment16   |
 CC||xiscofa...@libreoffice.org
Summary|Experimental Visual formula |Experimental Visual formula
   |editor does not link to |editor does not link to
   |system clipboard, also is   |system clipboard, also is
   |missing Copy and Cut|missing Copy and Cut
   |buttons in its selection|buttons in its selection
   |context menu|context menu (see comment
   ||16)

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

--- Comment #20 from kompilainenn <79045_79...@mail.ru> ---
still repro in

Версия: 6.1.0.1 (x64)
ID сборки: 378e26bd4f22a135cef5fa17afd5d4171d8da21a
Потоков ЦП: 4; ОС:Windows 10.0; Отрисовка ИП: по умолчанию; 
Локаль: ru-RU (ru_RU); Calc: CL

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

V Stuart Foote  changed:

   What|Removed |Added

   See Also||https://bugs.documentfounda
   ||tion.org/show_bug.cgi?id=10
   ||6479

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

V Stuart Foote  changed:

   What|Removed |Added

 Blocks||39750


Referenced Bugs:

https://bugs.documentfoundation.org/show_bug.cgi?id=39750
[Bug 39750] [META] General Math formula editor improvements
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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

Michael Stahl mst...@redhat.com changed:

   What|Removed |Added

 Attachment #113018|application/octet-stream|video/x-msvideo
  mime type||

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

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https://bugs.documentfoundation.org/show_bug.cgi?id=88744

--- Comment #18 from OfficeUser norbert.n...@gmx.de ---
After having this issue fixed... what prevents us from removing the Visual
formula editor's experimental state?

According to some quick and dirty tests, it seems to work! In case if it still
has some issues, they will will be revealed after this feature is not hidden
anymore and used by more people.

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

V Stuart Foote vstuart.fo...@utsa.edu changed:

   What|Removed |Added

   Priority|high|medium
Version|4.4.0.1 rc  |3.6.7.2 release
Summary|Formula select is missing   |Experimental Visual formula
   |Copy, Paste, Cut  items in  |editor does not link to
   |context menu and has them   |system clipboard, also is
   |greyed out in Edit menu |missing Copy and Cut
   ||buttons in its selection
   ||context menu
 Whiteboard||summary:comment16

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

V Stuart Foote vstuart.fo...@utsa.edu changed:

   What|Removed |Added

Version|3.6.7.2 release |3.3.0 release

--- Comment #17 from V Stuart Foote vstuart.fo...@utsa.edu ---
Seems we've had the Visual formula editor--with its isolated clipboard--stuck
as an experimental feature since the initial 3.3.0 release

LibreOffice 3.3.0 
OOO330m19 (Build:6)
tag libreoffice-3.3.0.4

Resetting version.

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[Libreoffice-bugs] [Bug 88744] Experimental Visual formula editor does not link to system clipboard, also is missing Copy and Cut buttons in its selection context menu

[bugzilla-daemon]

https://bugs.documentfoundation.org/show_bug.cgi?id=88744

V Stuart Foote vstuart.fo...@utsa.edu changed:

   What|Removed |Added

 CC||marcos.souza@gmail.com

--- Comment #19 from V Stuart Foote vstuart.fo...@utsa.edu ---
(In reply to OfficeUser from comment #18)
 After having this issue fixed... what prevents us from removing the Visual
 formula editor's experimental state?
 
 According to some quick and dirty tests, it seems to work! In case if it
 still has some issues, they will will be revealed after this feature is not
 hidden anymore and used by more people.

Probably nothing... but that is an issue for the ESC.

Unfortunately it looks like there remains a lot of work still to be done other
than making this connection to the general system clipboard.  Here is Jonas'
list as of mid-2013.

http://opengrok.libreoffice.org/xref/core/starmath/visual-editor-todo

Some folks have poked at its pieces, but no dev since Jonas' initial GSoC work
in 2010 has really dug in to move the Visual formula editor along.

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Re: Visual formula editor

[Tomaž Vajngerl]

Hi Olivier,

On Tue, May 21, 2013 at 10:24 PM, Olivier Hallot 
olivier.hal...@documentfoundation.org wrote:

 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 Hello Tomaz

 Interesting work. I thought once in augmenting the elements box with
 some calculus frequent expressions such as For all x, there exist y
 such as f(x) = g(y) with x,y,g,f,= as placeholders.


Yes, things like this can now easily be added. Probably there are even more
- we should collect them and also maybe also rethink the existing ones. I
plan to ask the ux-advice list about this.



 Your side-pane could be extended to gain more  panes, for more formula
 disciplines (physics, chemistry, bio, other math domains, etc...).


I plan to add a new side bar for a equation gallery where a user can add
its own - we could pre-add them in the way you describe it - each in its
own category. But first we should collect them. :)


 If this is far beyond your personal endeavour, please leave the door open
 for easy hacks.


Sure, this is a lot to do. I will think about and make some easy hacks for
things I won't work on in the near future.

kind regards
 - --
 Olivier Hallot
 Founder, Board of Directors Member - The Document Foundation
 The Document Foundation, Zimmerstr. 69, 10117 Berlin, Germany
 Fundação responsável civilmente, de acordo com o direito civil
 Detalhes Legais: http://www.documentfoundation.org/imprint
 LibreOffice translation leader for Brazilian Portuguese
 +55-21-8822-8812
 -BEGIN PGP SIGNATURE-
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Re: Visual formula editor

[Miklos Vajna]

On Fri, May 17, 2013 at 09:47:06PM +0400, Ruslan Kabatsayev 
b7.10110...@gmail.com wrote:
 Is visual formula editor still being worked on?

Jonas created the visual formula editor feature -- and AFAIK he's not
actively working on it these days. OTOH, hopefully he can get you
started if you have specific questions. :-)


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Re: Visual formula editor

[Jonas Finnemann Jensen]

Hi,

As Miklos says, I'm not actively working on the starmath module anymore...
But feel free to CC me on any questions/problems you run into.
I'm still on the mailing-list but I don't manage to read
everything/anything, so CC me if you want to reach me.

Has there in fact been any discussion on how these things should feel
 like? Or is there any documentation about this?

I had some ideas about things I wanted to do:
http://cgit.freedesktop.org/libreoffice/core/tree/starmath/visual-editor-todo
But I'd imagine any improvements are welcome.

The experimental formula editor is quite complicated because the abstract
syntax tree it operates on is more concrete than abstract.
In order to observe how the formula object tree looks and is changed, you
might want to take a look at:
http://cgit.freedesktop.org/libreoffice/core/tree/starmath/workben/smath-dump-watch.sh


 Also, could someone give some pointers on where all this stuff is
 located in the code?

Key input is handled in
http://cgit.freedesktop.org/libreoffice/core/tree/starmath/source/view.cxx#n422
When handling key input an instance of SmCursor is used to modify the tree,
SmCursor is defined in:
http://cgit.freedesktop.org/libreoffice/core/tree/starmath/source/cursor.cxx

You can get an overview of how the visual formula editor works from my
presentation at OpenSuSE conference 2010:
http://jonasfj.dk/downloads/GSoC2010/slide-osc10.pdf

WARNING:
The visual formula editor is quite complicated, in fact over complicated.
As I said before this is a result of the abstract syntax tree not being
very abstract.
Ideally, I think the nodes that make up the formula object tree should be
refactored.
If you look at my slides you'll see that a line in the formula editor is
not a list of elements,
but a tree consisting of binary operator nodes. So when editing a line, it
is parsed into a LineList
which is a list of elements. Then the LineList is modified and a tree
consisting of binary operator nodes
is constructed from it.
This is quite horrible, ideally, a line should be a single node consisting
of a list of elements.
But refactoring this seemed quite scary to me at the time...


--
Regards Jonas Finnemann Jensen.


On Tue, May 21, 2013 at 11:00 AM, Miklos Vajna vmik...@suse.cz wrote:

 On Fri, May 17, 2013 at 09:47:06PM +0400, Ruslan Kabatsayev 
 b7.10110...@gmail.com wrote:
  Is visual formula editor still being worked on?

 Jonas created the visual formula editor feature -- and AFAIK he's not
 actively working on it these days. OTOH, hopefully he can get you
 started if you have specific questions. :-)

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Visual formula editor

[Ruslan Kabatsayev]

Hi all,

Is visual formula editor still being worked on?
I'd like to make some changes on its interface, namely shortcuts to
insert some elements like fractions, roots etc., making all this feel
more like Wolfram Mathematica's formula editor (which is _quite_
powerful and logically consistent). Ideally, this would have the power
of Mathematica's formula editor, residing in a FOSS suite.
Has there in fact been any discussion on how these things should feel
like? Or is there any documentation about this?
Also, could someone give some pointers on where all this stuff is
located in the code?

Regards,
Ruslan
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Re: Visual formula editor

[Tomaž Vajngerl]

Hi,

With formula editor you mean LO Math? I am working on a new elements
docking window as better alternative to the current one. All elements are
rendered so I can put in any equation that I want - see attached image. I
hope I will be able to deliver something in LO 4.1

Generally everything is in starmath folder in LO. Most interesting are
starmath/source/visitors.cxx / stamath/inc/visitors.hxx which contain
visitors which perform various tasks on a parsed equation tree like drawing
the equation. With a custom visitor you could for implement solving or
exporting.

Regards, Tomaž


On Fri, May 17, 2013 at 7:47 PM, Ruslan Kabatsayev b7.10110...@gmail.comwrote:

 Hi all,

 Is visual formula editor still being worked on?
 I'd like to make some changes on its interface, namely shortcuts to
 insert some elements like fractions, roots etc., making all this feel
 more like Wolfram Mathematica's formula editor (which is _quite_
 powerful and logically consistent). Ideally, this would have the power
 of Mathematica's formula editor, residing in a FOSS suite.
 Has there in fact been any discussion on how these things should feel
 like? Or is there any documentation about this?
 Also, could someone give some pointers on where all this stuff is
 located in the code?

 Regards,
 Ruslan
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Re: Visual formula editor

[Ruslan Kabatsayev]

Hi,

On Fri, May 17, 2013 at 10:37 PM, Tomaž Vajngerl qui...@gmail.com wrote:
 Hi,

 With formula editor you mean LO Math? I am working on a new elements
 docking window as better alternative to the current one. All elements are
 rendered so I can put in any equation that I want - see attached image. I
 hope I will be able to deliver something in LO 4.1
By _visual_ formula editor I mean the experimental feature where one
can enter formulas directly in formula viewing frame, not having to
write LO Math code itself.
So, my question is rather for specially this feature, not the whole math.

 Generally everything is in starmath folder in LO. Most interesting are
 starmath/source/visitors.cxx / stamath/inc/visitors.hxx which contain
 visitors which perform various tasks on a parsed equation tree like drawing
 the equation. With a custom visitor you could for implement solving or
 exporting.
Thanks, I'll have a look in that dir.

 Regards, Tomaž


 On Fri, May 17, 2013 at 7:47 PM, Ruslan Kabatsayev b7.10110...@gmail.com
 wrote:

 Hi all,

 Is visual formula editor still being worked on?
 I'd like to make some changes on its interface, namely shortcuts to
 insert some elements like fractions, roots etc., making all this feel
 more like Wolfram Mathematica's formula editor (which is _quite_
 powerful and logically consistent). Ideally, this would have the power
 of Mathematica's formula editor, residing in a FOSS suite.
 Has there in fact been any discussion on how these things should feel
 like? Or is there any documentation about this?
 Also, could someone give some pointers on where all this stuff is
 located in the code?

 Regards,
 Ruslan
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Re: [Libreoffice] visual formula editor makes unwanted changes to command line

[Michael Meeks]

On Sun, 2011-01-02 at 21:12 +0100, Jonas Finnemann Jensen wrote:
  I have installed RC2 now, but I see no difference in formula editor.

 I don't think everything from master is merged into the release candidate...
 And since this is still an experimental feature we're slow at pushed
 things out...

Right :-) best to test this on master; hopefully when turned off it
doesn't cause too much grief, and this is getting us some useful bug /
testing feedback :-)

If the feature were more clearly separated I'd suggest we back-port
fixes more aggressively to the stable branch (since it is clearly
flagged as experimental).

Having said that - if we have any fixes for regressions that are not
working when the feature is not enabled - we should back-port them: are
there any ?

Thanks,

Michael.

-- 
 michael.me...@novell.com  , Pseudo Engineer, itinerant idiot


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Re: [Libreoffice] visual formula editor makes unwanted changes to command line

[Jonas Finnemann Jensen]

Hi

 I have installed RC2 now, but I see no difference in formula editor.
I don't think everything from master is merged into the release candidate...
And since this is still an experimental feature we're slow at pushed
things out...

 Do you want bug reports for these problems?
No, not yet... It's too much administration and the dust have settled
on the code, yet... :)

--
Regards Jonas Finnemann Jensen.



On Fri, Dec 31, 2010 at 14:44, Regina Henschel rb.hensc...@t-online.de wrote:
 Hi Jonas,

 Jonas Finnemann Jensen schrieb:

 This is a problem in the SmNodeToTextVisitor...
 Have you tried latest version... Luke have been (and may still be)
 working on this issue.

 I have installed RC2 now, but I see no difference in formula editor.

 The problem is that the use of brackets in expressions is context
 dependent.
 Notice the difference between binom { A } { B } C and { binom { A } {
 B } } C, where A, B and C are expressions...

 I see no difference. And why should there be a difference? The command
 binom takes two operands, so the expression is finished after binom { A }
 { B } and I see no need for brackets around it.


 (1) Short ^ and _ are exchanged with long rsup and rsub.
 (2)  A lot of additional braces and spaces are added.
 (3) The part from ... to  is exchanged with csup and csub.

 Definitely points to improve... The main concern at the moment is to
 have a node to text visitor that preserves the resulting formula...
 Luke have already removed a lot of brackets that wasn't necessary...

 Do you want bug reports for these problems?

 Leaving out whitespace is not a problem but how much whitespace do you
 think is good... ?

 I personally use blanks only where it is necessary to separate things. In
 addition I use carriage returns to structure expressions, especially
 matrices.

 For example I write
        f%prime(x)=func e^-{x^2 over 2}
 and
        6 a + 5,5b
 latter because of the bug, that in 6a the a is not italic.

 Kind regards
 Regina

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Re: [Libreoffice] visual formula editor makes unwanted changes to command line

[Regina Henschel]

Hi Jonas,

Jonas Finnemann Jensen schrieb:

This is a problem in the SmNodeToTextVisitor...
Have you tried latest version... Luke have been (and may still be)
working on this issue.


I have installed RC2 now, but I see no difference in formula editor.


The problem is that the use of brackets in expressions is context dependent.
Notice the difference between binom { A } { B } C and { binom { A } {
B } } C, where A, B and C are expressions...


I see no difference. And why should there be a difference? The command 
binom takes two operands, so the expression is finished after binom { 
A } { B } and I see no need for brackets around it.





(1) Short ^ and _ are exchanged with long rsup and rsub.
(2)  A lot of additional braces and spaces are added.
(3) The part from ... to  is exchanged with csup and csub.

Definitely points to improve... The main concern at the moment is to
have a node to text visitor that preserves the resulting formula...
Luke have already removed a lot of brackets that wasn't necessary...


Do you want bug reports for these problems?


Leaving out whitespace is not a problem but how much whitespace do you
think is good... ?


I personally use blanks only where it is necessary to separate things. 
In addition I use carriage returns to structure expressions, especially 
matrices.


For example I write
f%prime(x)=func e^-{x^2 over 2}
and
6 a + 5,5b
latter because of the bug, that in 6a the a is not italic.

Kind regards
Regina

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[Libreoffice] visual formula editor makes unwanted changes to command line

[Regina Henschel]

Hi,

next problem with the visual formula editor:

Enter the formula

SS_total = sum from i=1 to N {(y_i-overline X)^2}

in command window. Exit editor.
Double click formula to enter edit mode.

In the visual part click left of the y and delete it and enter x.
Watch the command line changing to

 { { SS rsub total = sum csup N csub { i = 1 } { ( { { { x } rsub i - 
overline { X } } } ) rsup 2 } } }


Problems:
(1) Short ^ and _ are exchanged with long rsup and rsub. That is bad, 
because to distinguish sub and sup you have to look very exactly in 
contrast to _ and ^, and the formula becomes longer.
(2)  A lot of additional braces and spaces are added. Bad, because the 
formula becomes longer and it is more difficult to find corresponding 
opening and closing brackets.
(3) The part from ... to  is exchanged with csup and csub. That is not 
acceptable, because it changes the meaning of the formula.


Kind regards
Regina

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[Libreoffice] Visual formula editor has no undo feature

[Regina Henschel]

Hi,

open an existing formula. Edit it somewhere in visual mode. Notice, that 
no undo entry is generated. Direct actions in the command window 
produces undo entries and so should do indirect changes.


Kind regards
Regina
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Re: [Libreoffice] Visual formula editor has no undo feature

[Jonas Finnemann Jensen]

Hi,

This is a known issue...
You can find the current todo-list for the visual editor here:
http://cgit.freedesktop.org/libreoffice/writer/tree/starmath/visual-editor-todo

--
Regards Jonas Finnemann Jensen.



On Thu, Dec 30, 2010 at 13:31, Regina Henschel rb.hensc...@t-online.de wrote:
 Hi,

 open an existing formula. Edit it somewhere in visual mode. Notice, that no
 undo entry is generated. Direct actions in the command window produces undo
 entries and so should do indirect changes.

 Kind regards
 Regina
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Re: [Libreoffice] visual formula editor makes unwanted changes to command line

[Jonas Finnemann Jensen]

This is a problem in the SmNodeToTextVisitor...
Have you tried latest version... Luke have been (and may still be)
working on this issue.
The problem is that the use of brackets in expressions is context dependent.
Notice the difference between binom { A } { B } C and { binom { A } {
B } } C, where A, B and C are expressions...

 (1) Short ^ and _ are exchanged with long rsup and rsub.
 (2)  A lot of additional braces and spaces are added.
 (3) The part from ... to  is exchanged with csup and csub.
Definitely points to improve... The main concern at the moment is to
have a node to text visitor that preserves the resulting formula...
Luke have already removed a lot of brackets that wasn't necessary...
Leaving out whitespace is not a problem but how much whitespace do you
think is good... ?
Anyway, thanks for the suggestions... I'll add them to the easy hacks page...

--
Regards Jonas Finnemann Jensen.



On Thu, Dec 30, 2010 at 13:09, Regina Henschel rb.hensc...@t-online.de wrote:
 Hi,

 next problem with the visual formula editor:

 Enter the formula

 SS_total = sum from i=1 to N {(y_i-overline X)^2}

 in command window. Exit editor.
 Double click formula to enter edit mode.

 In the visual part click left of the y and delete it and enter x.
 Watch the command line changing to

  { { SS rsub total = sum csup N csub { i = 1 } { ( { { { x } rsub i -
 overline { X } } } ) rsup 2 } } }

 Problems:
 (1) Short ^ and _ are exchanged with long rsup and rsub. That is bad,
 because to distinguish sub and sup you have to look very exactly in
 contrast to _ and ^, and the formula becomes longer.
 (2)  A lot of additional braces and spaces are added. Bad, because the
 formula becomes longer and it is more difficult to find corresponding
 opening and closing brackets.
 (3) The part from ... to  is exchanged with csup and csub. That is not
 acceptable, because it changes the meaning of the formula.

 Kind regards
 Regina

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Re: [Libreoffice] Easy Hack: Don't draw caret when visual formula editor looses focus

[Jonas Finnemann Jensen]

Hi Luke,

I thought I'd try one of the visual formula editor easy hacks

Great... Your patch looks fine to me... And works very well too!
I've applied and pushed your patch to the master branch (commit
8137918224bb).
And removed the item from the easy hacks page on the wiki.

This one seemed the easiest of the three there. Hope it's okay.

More than okay: Great! Issues are here to be fixed - not buried in a bug
tracker...

I noticed that you've found and updated the todo list (thanks, btw)...
This means that you know where to find inspiration for more challenging
visual formula editor tasks, should you be interested...
(just, drop me an e-mail, if you are).

I started the visual formula editor feature during GSoC, so if you want to
work on it
or have questions, you're most welcome to e-mail me or ping me on IRC...
(I'm also available if you need some help getting started with the
codebase).

Again, thanks for the patch - that's one item off the todo :)

--
Regards Jonas Finnemann Jensen.


On Mon, Nov 1, 2010 at 23:04, Luke Dixon 6b8b4...@gmail.com wrote:

 Hello,

 I thought I'd try one of the visual formula editor easy hacks, as
 Michael had recommended.

 This one seemed the easiest of the three there. Hope it's okay.

 Regards,
 Luke



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