Re: How to get key information from qt terminal to gnuplot

[Tatsuro M. <tma...@ya...>]

----- Original Message -----

> From: Tatsuro MATSUOKA 
> To: Merritt Ethan ; gnuplot-beta
> Cc: 
> Date: 2014/6/23, Mon 04:13
> Subject: Re: How to get key information from qt terminal to gnuplot
> ----- Original Message -----
>>  From: sfeam 
>>  To: gnuplot-beta Tatsuro MATSUOKA 
>>  Cc: 
>>  Date: 2014/6/23, Mon 01:37
>>  Subject: Re: How to get key information from qt terminal to gnuplot
>> 
>>  On Sunday, 22 June 2014 05:36:20 PM Tatsuro MATSUOKA wrote:
>>>   Hello
>>> 
>>> 
>> 
> http://gnuplot.10905.n7.nabble.com/Spacebar-does-not-raise-command-window-with-wxt-terminal-td18540.html
>>> 
>>> 
>>>   For qt terminal, this feature seems not to be implemented. (Right?)
>>>   Although I do not have enough knowledge, I tried to implement it.
>>>   I looked into qt_term.cpp and QtGnuplotScene.cpp.
>>> 
>>>   In QtGnuplotScene.cpp, qt terminal seems to return key information in 
>>> 
>>>   void QtGnuplotScene::keyPressEvent(QKeyEvent* event)
>>>   <snip>
>>>   live = m_eventHandler->postTermEvent(GE_keypress,
>>>   int(m_lastMousePos.x()), int(m_lastMousePos.y()), key, 0, m_widget);
>>> 
>>>   While in qt_term.cpp,
>>> 
>>>   /*-------------------------------------------------------
>>>    * Communication terminal -> gnuplot
>>>    *-------------------------------------------------------*/
>>> 
>>>   bool qt_processTermEvent(gp_event_t* event)
>>>   <snip>
>>>   if ((event->type == GE_keypress) && (paused_for_mouse & 
> 
>>  PAUSE_KEYSTROKE) && (event->par1 > '\0'))
>>> 
>>> 
>>>   However,
>>>   'struct gp_event_t' has no member named 'key'
>>> 
>>> 
>>>   How I do get key information from qt terminal to gnuplot?
>> 
>>  The simplest way is
>>  gnuplot>  bind "<key>" "command to execute"
>> 
>>  No code change to the qt terminal is needed. However there is not
>>  currently a "command to execute" that raises the console window.
>>  The "raise" command acts on the plot window, not the console 
> window.
>> 
>>  Why does the "raise console" function use different code for each
>>  terminal type?  The console is the same no matter what terminal is
>>  in use.  Am I missing something?  
>> 
>>  My current thinking is that the special code to raise the console
>>  should be removed from all terminals.
>>  Instead we could add a routine in mouse.c that responds to the
>>  keystroke after it is passed to the gnuplot core.  This would be
>>  shared by all terminals.  
>> 
>>      Ethan
> OK. I agree with you.
> Thanks for the pointer.


Although I agree with Ethan, it is important to know the code to get information what key pressed 
from gnuplot_qt to gnuplot. I will appreciate that some will show the way.

Tatsuro