static int luabox_getcell( lua_State *L ) {
uint16_t x = luaL_checknumber( L, 1 );
uint16_t y = luaL_checknumber( L, 2 );
if ( x >= 0 && x < tb_width() && y >= 0 && y < tb_height()) {
struct tb_cell *cell = (tb_cell_buffer() + y * tb_width() + x);
lua_pushnumber( L, cell->ch );
lua_pushnumber( L, cell->fg );
lua_pushnumber( L, cell->bg );
return 3;
} else {
luaL_error( L, "coordinates out of bounds" );
return 0;
}
}
static int ui_draw_chars(char *chars, int x, int y, uint16_t fg, uint16_t bg) {
int width = tb_width();
int pointer = 0;
int counter = 0;
int length;
mbstate_t state;
wchar_t ch;
// Initialize multi-byte state
mbrlen(NULL, 0, &state);
while (chars[pointer] != '\0') {
length = mbrtowc(&ch, chars + pointer, 4, &state);
tb_change_cell(x + pointer, y, ch, fg, bg);
pointer += length;
counter++;
}
// Draw spaces for the remaining of the line
for (int i = counter; i < width; i++) {
tb_change_cell(x + i, y, ' ', fg, bg);
}
return counter;
}
inline
Manager(std::unique_ptr<Widget>&& widget) {
tb_init();
tb_select_input_mode(TB_INPUT_ESC | TB_INPUT_MOUSE);
tb_select_output_mode(TB_OUTPUT_256);
root = std::move(widget);
resize(tb_width(), tb_height());
}
int main(int argv, char **argc) {
int code = tb_init();
if (code < 0) {
fprintf(stderr, "termbox init failed, code: %d\n", code);
return -1;
}
tb_select_input_mode(TB_INPUT_ESC | TB_INPUT_MOUSE);
int w = tb_width();
int h = tb_height();
reallocBackBuffer(w, h);
updateAndRedrawAll(-1, -1);
for (;;) {
struct tb_event ev;
int mx = -1;
int my = -1;
int t = tb_poll_event(&ev);
if (t == -1) {
tb_shutdown();
fprintf(stderr, "termbox poll event error\n");
return -1;
}
switch (t) {
case TB_EVENT_KEY:
if (ev.key == TB_KEY_ESC) {
tb_shutdown();
return 0;
}
break;
case TB_EVENT_MOUSE:
if (ev.key == TB_KEY_MOUSE_LEFT) {
mx = ev.x;
my = ev.y;
}
break;
case TB_EVENT_RESIZE:
reallocBackBuffer(ev.w, ev.h);
break;
}
updateAndRedrawAll(mx, my);
}
}
CAMLprim value tbstub_width() {
return Val_int(tb_width());
}
static int lua_tb_width( lua_State *L ) {
lua_pushinteger( L, tb_width());
return 1;
}
static int luabox_print( lua_State *L ) {
const char *chstr = luaL_checkstring( L, 1 );
int x = luaL_checkint( L, 2 );
int y = luaL_checkint( L, 3 );
uint16_t fg;
uint16_t bg;
int w;
int h;
int xfrom = x;
int len;
int lensaved;
const char *chstrfrom = chstr;
int mode;
int CR = 0;
int NL = 0;
int wrapped = 0;
lua_len( L, 1 );
len = lensaved = (int) lua_tonumber( L, -1 );
lua_pop( L, 1 );
fg = lua_isnumber( L, 4 ) ? lua_tonumber( L, 4 ) : TB_DEFAULT;
bg = lua_isnumber( L, 5 ) ? lua_tonumber( L, 5 ) : TB_DEFAULT;
w = lua_isnumber( L, 6 ) ? lua_tonumber( L, 6 ) : tb_width();
h = lua_isnumber( L, 7 ) ? lua_tonumber( L, 7 ) : tb_height();
mode = lua_isnumber( L, 8 ) ? lua_tonumber( L, 8 ) : LUABOX_WRAP;
w = w + xfrom;
h = h + y;
while ( len > 0 ) {
uint32_t ch;
int chlen = tb_utf8_char_to_unicode( &ch, chstr );
if ( ch == '\n' && CR ) {
CR = 0;
} else if ( ch == '\r' || ch == '\n' ) {
NL = 1;
} else {
tb_change_cell( x, y, ch, fg, bg );
if ( x >= w-1 ) {
NL = 1;
wrapped = 1;
} else {
if ( wrapped && mode == LUABOX_WRAP && ( ch == ' ' || ch == '\t' ) && x == xfrom ) {
} else {
x++;
wrapped = 0;
}
}
}
len -= chlen;
chstr += chlen;
if ( NL ) {
NL = 0;
if ( mode == LUABOX_TRUNC || y >= h-1 ) {
break;
} else {
if ( ch == '\r' ) CR = 1;
y++;
x = xfrom;
}
}
if ( len <= 0 && mode == LUABOX_REPEAT ) {
chstr = chstrfrom;
len = lensaved;
}
}
return 0;
}