/*
Enter a new screen
- completely clear the display
- allow updating the screens windows
- call the screen specific enter function to start tasks and timers etc.
- draw contents of screens windows
- allow keystrokes to be sent to the screen
*/
static void
screen_enter(enum SCREEN screen){
lcd_fill(0x00);
cur_screen = screen;
deferred_screen = NO_SCREEN;
screen_visible(screen, 1);
screen_list[screen].screen_enter();
screen_redraw(screen);
};
void screen_flush(void)
{
if (!screen.buf) {
terminal_flush();
return;
}
if (!terminal_input_buffer_empty())
return;
if (screen.redraw || (abs(screen.scrollcnt) >= (screen.lines - 3))) {
screen_redraw();
return;
}
if (screen.scrollcnt < 0) {
move_terminal_cursor(0, 0);
while (screen.scrollcnt < 0) {
ansi_cmd(ANSI_CMD_SR);
screen.scrollcnt++;
}
}
if (screen.scrollcnt > 0) {
move_terminal_cursor(0, screen.lines - 1);
while (screen.scrollcnt > 0) {
terminal_putchar('\n');
screen.scrollcnt--;
}
}
for (int i = 0; i < screen.lines; i++) {
screen_line_t *sl = get_screen_line(i);
sl->data[sl->len] = '\0';
int width = screen_display_width((char *) sl->data, true);
if (sl->modified) {
sl->modified = false;
move_terminal_cursor(0, i);
screen_write_cached(sl->data, sl->len);
screen.tc_col = width;
if (screen.tc_col >= screen.columns) {
screen.tc_col -= screen.columns;
screen.tc_line++;
if (screen.tc_line >= screen.lines)
screen.tc_line = screen.lines - 1;
}
}
if (sl->old_width > width) {
move_terminal_cursor(width, i);
ansi_cmd(ANSI_CMD_CE);
}
sl->old_width = width;
}
move_terminal_cursor(screen.cur_col, screen.cur_ln);
terminal_flush();
}
int egetch(void)
{
int rval;
while (1) {
rval = terminal_getchar();
if (rval != Ctrl('L'))
break;
screen_redraw();
}
return rval;
}
void
popup_end(){
if (timed_popup) {
task_del(close_popup_task);
timer_del(&popup_tmr);
};
popup_active = 0;
set_keypress_handler(mainscreen_keypress);
if (deferred_screen != NO_SCREEN)
screen_enter(deferred_screen);
else {
popup_restore();
screen_visible(cur_screen, 1);
screen_redraw(cur_screen);
};
};
/**
* Get next byte from stdin, with special byte interpreted.
* @return next byte from stdin
*/
int igetch(void)
{
static bool cr = 0;
int ch;
while (1) {
ch = get_raw_ch();
switch (ch) {
case IAC:
handle_iac();
continue;
case KEY_ESC:
ch = handle_esc();
break;
case Ctrl('L'):
screen_redraw();
continue;
case '\r':
ch = '\n';
cr = true;
break;
case '\n':
if (cr) {
cr = false;
continue;
}
break;
case '\0':
cr = false;
continue;
default:
cr = false;
break;
}
break;
}
return ch;
}
static void
screen_enter(){
lcd_fill(0x00);
screen_visible(INFO_SCREEN, 1);
screen_redraw(INFO_SCREEN);
};
