> Ur's idea seems to work. Can u post a pseudo code so that I
> can
> easily implement becase I never worked on events and handle.
>
Well, OK, here's the basic idea laid out in code.
Seems to kind of work - though bearing in mind Albrecht's observations, it may
not be the right solution, and probably not all that robust.
Perhaps it will get you started in the right direction...
/*****************************************************************************/
// fltk-config --compile idle-window.cxx
/* Standard headers */
#include <stdlib.h>
#include <stdio.h>
/* Fltk headers */
#include <Fl/Fl.h>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Button.H>
#include <FL/names.h>
#define IDLE_CHECK_TIME 5.0
/*****************************************************************************/
/* This class provides an idle-detecting window */
class idle_win : public Fl_Double_Window {
int handle(int event);
public:
idle_win(int w, int h, const char *L);
unsigned had_events;
};
/*****************************************************************************/
/* Constructor */
idle_win::idle_win(int w, int h, const char *L) : Fl_Double_Window(w,h,L){
had_events = 0;
} // Constructor
/*****************************************************************************/
int idle_win::handle(int ev) {
switch(ev) {
case FL_ENTER:
case FL_MOVE:
case FL_LEAVE:
case FL_PUSH:
case FL_DRAG:
case FL_RELEASE:
// and some other events?
had_events ++;
break;
default:
break;
}
// printf("%6d - %s\n", had_events, fl_eventnames[ev]);fflush(stdout);
// call the base class event handler
return Fl_Double_Window::handle(ev);
} // handle
/*****************************************************************************/
// The main window for the demo
static idle_win *main_window = NULL;
/*****************************************************************************/
static void check_for_idle(void *) {
static unsigned last_check = 0;
static unsigned ticks = 0;
static unsigned idle_count = 0;
ticks++;
if(last_check == main_window->had_events)
{
printf("May be idle %d\n", ticks); fflush(stdout);
idle_count++;
}
else
{
idle_count = 0;
last_check = main_window->had_events;
}
// are we idle for too long?
if(idle_count > 5) // exit now...
{
main_window->hide();
}
// repeat the delay
Fl::repeat_timeout(IDLE_CHECK_TIME, check_for_idle);
} // check_for_idle
/*****************************************************************************/
static void do_exit(Fl_Button *, void *v) {
main_window->hide();
} // do_exit
/*****************************************************************************/
int main (int argc, char **argv) {
// create the main window
main_window = new idle_win(600, 600, "Idle Demo");
main_window->begin();
Fl_Button *b1 = new Fl_Button(100, 100, 60, 30, "A button");
Fl_Button *b2 = new Fl_Button(530, 560, 60, 30, "Exit");
b2->callback((Fl_Callback *)do_exit);
main_window->end();
// show the app
main_window->show(argc, argv);
// add a timer to detect inactivity
Fl::add_timeout(IDLE_CHECK_TIME, check_for_idle);
// start the fltk loop
return Fl::run();
} // main
/* end of file */
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