Re: [Texmacs-dev] Qt port problem

[Stéphane Payrard]

On (13/09/02 16:46), Joris van der Hoeven wrote:
> From: Joris van der Hoeven <address@hidden>
> To: address@hidden
> Subject: Re: [Texmacs-dev] Qt port problem
> Reply-To: address@hidden
> Date: Fri, 13 Sep 2002 16:46:35 +0200 (MET DST)
> 
> 
> > I am stuck when trying to deal with X event because I transmit them too
> > soon so edit_interface_rep::handle_repaint (repaint_event ev)
> > complains.  Can you tell me at which time it is safe to handle events?
> 
> I am not sure whether I understand your question well.
> Repainting is indeed quite complex, because we test whether new events
> occur during this phase. You may wish to disable this behaviour for
> a first working port.
> 

Because of Qt constraints, the sequence of building widgets is
different. What was the mainwindow becomes a normal X-window
that I hand to Qt. The display handle is proper to TeXmacs so
the TeXmacs events are still treated by a modified TeXmacs loop
(see below). Progressively stuff that was handled by the native
TeXmacs toolkit will get treated by Qt.


I probalby attempt to repaint before the data in the widget is in a
coherent state. So I would like to know when this state is reached.  I
don't understand too well the flow of information to get that right.
I get to repaint the menu, the first bar and half of the second bar
before I hit the problem.


In fact I have mutilated the loop because It becomes a routine that I
call from a Qt timer with 'delay' as interval. Is the missing code
( Wait for events on all channels and interpose,  Popup help balloons)
cause of the problem?


void
x_display_rep::event_loop_qt () {
  cerr << "event_loop_qt\n";
    // Get events
    while (XPending (dpy) > 0) {
      cerr << ".";
      XEvent report;
      XNextEvent (dpy, &report);
      // cout << "Event: " << event_name[report.type] << "\n";
      x_window win= (x_window) Window_to_window[report.xany.window];
      if (win!=NULL) process_event (win, &report);
      count= 0;
      delay= MIN_DELAY;
      continue;
    }
    // Redraw invalid windows
    iterator<Window> it= iterate (Window_to_window);
    while (it->busy()) {
      x_window win= (x_window) Window_to_window[it->next()];
      win->repaint_invalid_regions();
    }

}


--
  stef