C++ (Cpp) help_key Examples

Example #1

File: main.c Project: drwebb/ncdu

/* wait:
 *  -1: non-blocking, always draw screen
 *   0: blocking wait for input and always draw screen
 *   1: non-blocking, draw screen only if a configured delay has passed or after keypress
 */
int input_handle(int wait) {
  int ch;
  struct timeval tv;

  nodelay(stdscr, wait?1:0);
  if(wait != 1)
    screen_draw();
  else {
    gettimeofday(&tv, (void *)NULL);
    tv.tv_usec = (1000*(tv.tv_sec % 1000) + (tv.tv_usec / 1000)) / update_delay;
    if(lastupdate != tv.tv_usec) {
      screen_draw();
      lastupdate = tv.tv_usec;
    }
  }
  while((ch = getch()) != ERR) {
    if(ch == KEY_RESIZE) {
      if(ncresize(min_rows, min_cols))
        min_rows = min_cols = 0;
      screen_draw();
      continue;
    }
    switch(pstate) {
      case ST_CALC:   return calc_key(ch);
      case ST_BROWSE: return browse_key(ch);
      case ST_HELP:   return help_key(ch);
      case ST_DEL:    return delete_key(ch);
    }
    screen_draw();
  }
  return 0;
}

Example #2

File: main.c Project: yywolf1983/code

/* wait:
 *  -1: non-blocking, always draw screen
 *   0: blocking wait for input and always draw screen
 *   1: non-blocking, draw screen only if a configured delay has passed or after keypress
 */
int input_handle(int wait) {
  int ch;
  struct timeval tv;

  if(wait != 1)
    screen_draw();
  else {
    gettimeofday(&tv, (void *)NULL);
    tv.tv_usec = (1000*(tv.tv_sec % 1000) + (tv.tv_usec / 1000)) / update_delay;
    if(lastupdate != tv.tv_usec) {
      screen_draw();
      lastupdate = tv.tv_usec;
    }
  }

  /* No actual input handling is done if ncurses hasn't been initialized yet. */
  if(!ncurses_init)
    return wait == 0 ? 1 : 0;

  nodelay(stdscr, wait?1:0);
  while((ch = getch()) != ERR) {
    if(ch == KEY_RESIZE) {
      if(ncresize(min_rows, min_cols))
        min_rows = min_cols = 0;
      /* ncresize() may change nodelay state, make sure to revert it. */
      nodelay(stdscr, wait?1:0);
      screen_draw();
      continue;
    }
    switch(pstate) {
      case ST_CALC:   return dir_key(ch);
      case ST_BROWSE: return browse_key(ch);
      case ST_HELP:   return help_key(ch);
      case ST_DEL:    return delete_key(ch);
    }
    screen_draw();
  }
  return 0;
}