/* Ensures that terminal is in proper state for a loop iteration. Returns
* non-zero if so, otherwise zero is returned. */
static int
ensure_term_is_ready(void)
{
ui_update_term_state();
update_terminal_settings();
if(curr_stats.term_state == TS_TOO_SMALL)
{
ui_display_too_small_term_msg();
wait_for_signal();
return 0;
}
if(curr_stats.term_state == TS_BACK_TO_NORMAL)
{
wint_t c;
wtimeout(status_bar, 0);
while(compat_wget_wch(status_bar, &c) != ERR);
curr_stats.term_state = TS_NORMAL;
modes_redraw();
wtimeout(status_bar, cfg.timeout_len);
curr_stats.save_msg = 0;
status_bar_message("");
}
return 1;
}
/* Sub-loop of the main loop that "asynchronously" queries for the input
* performing the following tasks while waiting for input:
* - checks for new IPC messages;
* - checks whether contents of displayed directories changed;
* - redraws UI if requested.
* Returns KEY_CODE_YES for functional keys, OK for wide character and ERR
* otherwise (e.g. after timeout). */
static int
get_char_async_loop(WINDOW *win, wint_t *c, int timeout)
{
const int IPC_F = (ipc_enabled() && ipc_server()) ? 10 : 1;
do
{
int i;
if(should_check_views_for_changes())
{
check_view_for_changes(curr_view);
check_view_for_changes(other_view);
}
process_scheduled_updates();
for(i = 0; i < IPC_F; ++i)
{
int result;
ipc_check();
wtimeout(win, MIN(cfg.min_timeout_len, timeout)/IPC_F);
result = compat_wget_wch(win, c);
if(result != ERR)
{
return result;
}
process_scheduled_updates();
}
timeout -= cfg.min_timeout_len;
}
while(timeout > 0);
return ERR;
}
/* Sub-loop of the main loop that "asynchronously" queries for the input
* performing the following tasks while waiting for input:
* - checks for new IPC messages;
* - checks whether contents of displayed directories changed;
* - redraws UI if requested.
* Returns KEY_CODE_YES for functional keys (preprocesses *c in this case), OK
* for wide character and ERR otherwise (e.g. after timeout). */
static int
get_char_async_loop(WINDOW *win, wint_t *c, int timeout)
{
const int IPC_F = ipc_enabled() ? 10 : 1;
do
{
int i;
int delay_slice = DIV_ROUND_UP(MIN(cfg.min_timeout_len, timeout), IPC_F);
#ifdef __PDCURSES__
/* pdcurses performs delays in 50 ms intervals (1/20 of a second). */
delay_slice = MAX(50, delay_slice);
#endif
if(should_check_views_for_changes())
{
check_view_for_changes(curr_view);
check_view_for_changes(other_view);
}
process_scheduled_updates();
for(i = 0; i < IPC_F && timeout > 0; ++i)
{
int result;
ipc_check(curr_stats.ipc);
wtimeout(win, delay_slice);
timeout -= delay_slice;
if(suggestions_are_visible)
{
/* Redraw suggestion box as it might have been hidden due to other
* redraws. */
display_suggestion_box(curr_input_buf);
}
/* Update cursor before waiting for input. Modes set cursor correctly
* within corresponding windows, but we need to call refresh on one of
* them to make it active. */
update_hardware_cursor();
result = compat_wget_wch(win, c);
if(result != ERR)
{
if(result == KEY_CODE_YES)
{
*c = K(*c);
}
else if(*c == L'\0')
{
*c = WC_C_SPACE;
}
return result;
}
process_scheduled_updates();
}
}
while(timeout > 0);
return ERR;
}