void tb_present(void)
{
int x,y;
struct tb_cell *back, *front;
/* invalidate cursor position */
lastx = LAST_COORD_INIT;
lasty = LAST_COORD_INIT;
if (buffer_size_change_request) {
update_size();
buffer_size_change_request = 0;
}
for (y = 0; y < front_buffer.height; ++y) {
for (x = 0; x < front_buffer.width; ++x) {
back = &CELL(&back_buffer, x, y);
front = &CELL(&front_buffer, x, y);
if (memcmp(back, front, sizeof(struct tb_cell)) == 0)
continue;
send_attr(back->fg, back->bg);
send_char(x, y, back->ch);
memcpy(front, back, sizeof(struct tb_cell));
}
}
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y))
write_cursor(cursor_x, cursor_y);
bytebuffer_flush(&output_buffer, inout);
}
void tb_shutdown(void)
{
if (termw == -1) {
fputs("tb_shutdown() should not be called twice.", stderr);
abort();
}
bytebuffer_puts(&output_buffer, funcs[T_SHOW_CURSOR]);
bytebuffer_puts(&output_buffer, funcs[T_SGR0]);
bytebuffer_puts(&output_buffer, funcs[T_CLEAR_SCREEN]);
bytebuffer_puts(&output_buffer, funcs[T_EXIT_CA]);
bytebuffer_puts(&output_buffer, funcs[T_EXIT_KEYPAD]);
bytebuffer_puts(&output_buffer, funcs[T_EXIT_MOUSE]);
bytebuffer_flush(&output_buffer, inout);
tcsetattr(inout, TCSAFLUSH, &orig_tios);
shutdown_term();
close(inout);
close(winch_fds[0]);
close(winch_fds[1]);
cellbuf_free(&back_buffer);
cellbuf_free(&front_buffer);
bytebuffer_free(&output_buffer);
bytebuffer_free(&input_buffer);
termw = termh = -1;
}
int tb_select_input_mode(int mode)
{
if (mode) {
if ((mode & (TB_INPUT_ESC | TB_INPUT_ALT)) == 0)
mode |= TB_INPUT_ESC;
/* technically termbox can handle that, but let's be nice and show here
what mode is actually used */
if ((mode & (TB_INPUT_ESC | TB_INPUT_ALT)) == (TB_INPUT_ESC | TB_INPUT_ALT))
mode &= ~TB_INPUT_ALT;
inputmode = mode;
if (mode&TB_INPUT_MOUSE) {
bytebuffer_puts(&output_buffer, funcs[T_ENTER_MOUSE]);
bytebuffer_flush(&output_buffer, inout);
} else {
bytebuffer_puts(&output_buffer, funcs[T_EXIT_MOUSE]);
bytebuffer_flush(&output_buffer, inout);
}
}
return inputmode;
}
static void send_clear(void)
{
send_attr(foreground, background);
bytebuffer_puts(&output_buffer, funcs[T_CLEAR_SCREEN]);
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y))
write_cursor(cursor_x, cursor_y);
bytebuffer_flush(&output_buffer, inout);
/* we need to invalidate cursor position too and these two vars are
* used only for simple cursor positioning optimization, cursor
* actually may be in the correct place, but we simply discard
* optimization once and it gives us simple solution for the case when
* cursor moved */
lastx = LAST_COORD_INIT;
lasty = LAST_COORD_INIT;
}
void tb_present(void)
{
int x,y,w,i;
struct tb_cell *back, *front;
/* invalidate cursor position */
lastx = LAST_COORD_INIT;
lasty = LAST_COORD_INIT;
if (buffer_size_change_request) {
update_size();
buffer_size_change_request = 0;
}
for (y = 0; y < front_buffer.height; ++y) {
for (x = 0; x < front_buffer.width; ) {
back = &CELL(&back_buffer, x, y);
front = &CELL(&front_buffer, x, y);
w = wcwidth(back->ch);
if (w < 1) w = 1;
if (memcmp(back, front, sizeof(struct tb_cell)) == 0) {
x += w;
continue;
}
memcpy(front, back, sizeof(struct tb_cell));
send_attr(back->fg, back->bg);
if (w > 1 && x >= front_buffer.width - (w - 1)) {
// Not enough room for wide ch, so send spaces
for (i = x; i < front_buffer.width; ++i) {
send_char(i, y, ' ');
}
} else {
send_char(x, y, back->ch);
for (i = 1; i < w; ++i) {
front = &CELL(&front_buffer, x + i, y);
front->ch = 0;
front->fg = back->fg;
front->bg = back->bg;
}
}
x += w;
}
}
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y))
write_cursor(cursor_x, cursor_y);
bytebuffer_flush(&output_buffer, inout);
}
void tb_shutdown(void)
{
bytebuffer_puts(&output_buffer, funcs[T_SHOW_CURSOR]);
bytebuffer_puts(&output_buffer, funcs[T_SGR0]);
bytebuffer_puts(&output_buffer, funcs[T_CLEAR_SCREEN]);
bytebuffer_puts(&output_buffer, funcs[T_EXIT_CA]);
bytebuffer_puts(&output_buffer, funcs[T_EXIT_KEYPAD]);
bytebuffer_flush(&output_buffer, inout);
tcsetattr(inout, TCSAFLUSH, &orig_tios);
shutdown_term();
close(inout);
close(winch_fds[0]);
close(winch_fds[1]);
cellbuf_free(&back_buffer);
cellbuf_free(&front_buffer);
bytebuffer_free(&output_buffer);
bytebuffer_free(&input_buffer);
}
