Re: Yet another GUI releated thought

[c.]

On 08/mag/08, at 18:04, address@hidden wrote:

> Message: 3
> Date: Thu, 08 May 2008 12:15:32 -0400
> From: "John W. Eaton" <address@hidden>
> Subject: Yet another GUI releated thought
> To: S?ren Hauberg <address@hidden>
> Cc: Octave Maintainers List <address@hidden>
> Message-ID: <address@hidden>
> Content-Type: text/plain; charset=iso-8859-1
>
> On  7-May-2008, S?ren Hauberg wrote:
>
> |   I'm still not convinced that it is necessary to make Octave thread
> | safe or similar complicated things to provide a graphical  
> interface to
> | Octave. I don't really understand the input handling in Octave,  
> so this
> | has been developed in a "Hmmm, I wonder what happens if I press this
> | button..." style.
> |   What I have done is the following:
> | In 'src/input.cc' I have added:
> |
> |   // TRUE if the GUI is being used
> |   bool using_gui = true;
> |
> | Then later (same file) I have changed the function 'gnu_readline'  
> so it
> | reads
> |
> |   if (!using_gui)
> |     retval = command_editor::readline (s, eof);
> |   else
> |     retval = GUI::readline (s, eof);
> |
> | This is probably the wrong place to do this, but it seems to work
> | (haven't tested much, though). The function 'GUI::readline'  
> returns when
> | the user pressed Return in the GUI. The GUI is being started in
> | 'octave_main' in 'src/octave.cc' in a separate thread.
>
> If the GUI runs in a separate thread and Octave is not thread safe,
> then how do you make the GUI responsive while Octave is off doing some
> calculation?

I never took part in the discussions about a GUI because I dont'see  
much use in it myself...
But, just out of curiosity, how much "irresponsive" would the GUI be  
in this way?
If the idea is to reproduce the functionalities of the matlab GUI, if  
I remeber well, there is not much it can do
while the kernel is evaluating a cmmand, it just shows a "busy..."  
message and dragging or resizing
the windows is essantially all that can be done until the evalution  
is over.

> jwe


 c.