void tb_set_cursor(int cx, int cy)
{
if (IS_CURSOR_HIDDEN(cursor_x, cursor_y) && !IS_CURSOR_HIDDEN(cx, cy))
memstream_puts(&write_buffer, funcs[T_SHOW_CURSOR]);
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y) && IS_CURSOR_HIDDEN(cx, cy))
memstream_puts(&write_buffer, funcs[T_HIDE_CURSOR]);
cursor_x = cx;
cursor_y = cy;
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y))
write_cursor(cursor_x, cursor_y);
}
void tb_set_cursor(int cx, int cy)
{
if (IS_CURSOR_HIDDEN(cursor_x, cursor_y) && !IS_CURSOR_HIDDEN(cx, cy))
fputs(funcs[T_SHOW_CURSOR], out);
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y) && IS_CURSOR_HIDDEN(cx, cy))
fputs(funcs[T_HIDE_CURSOR], out);
cursor_x = cx;
cursor_y = cy;
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y))
fprintf(out, funcs[T_MOVE_CURSOR], cursor_y+1, cursor_x+1);
}
void tb_present(void)
{
unsigned 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);
memstream_flush(&write_buffer);
}
static void send_clear(void)
{
send_attr(foreground, background);
memstream_puts(&write_buffer, funcs[T_CLEAR_SCREEN]);
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y))
write_cursor(cursor_x, cursor_y);
memstream_flush(&write_buffer);
/* 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;
}
static void send_clear()
{
send_attr(foreground, background);
fputs(funcs[T_CLEAR_SCREEN], out);
if (!IS_CURSOR_HIDDEN(cursor_x, cursor_y))
fprintf(out, funcs[T_MOVE_CURSOR], cursor_y+1, cursor_x+1);
fflush(out);
/* 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);
}
