Convert the main menu screen to lua lol

lib/luavgl/simulator/widgets/pointer.c

@@ -0,0 +1,101 @@
+#include <lauxlib.h>
+#include <lua.h>
+
+#include <lvgl.h>
+#include <stdlib.h>
+
+#include <luavgl.h>
+
+#include "lv_pointer.h"
+
+static int luavgl_pointer_create(lua_State *L)
+{
+  return luavgl_obj_create_helper(L, lv_pointer_create);
+}
+
+static void _lv_pointer_set_range(void *obj, lua_State *L)
+{
+  if (!lua_istable(L, -1)) {
+    luaL_argerror(L, -1, "expect date table.");
+    return;
+  }
+
+  uint32_t value_start, value_range, angle_start, angle_range;
+  lua_getfield(L, -1, "valueStart");
+  value_start = lua_tointeger(L, -1);
+  lua_pop(L, 1);
+
+  lua_getfield(L, -1, "valueRange");
+  value_range = lua_tointeger(L, -1);
+  lua_pop(L, 1);
+
+  lua_getfield(L, -1, "angleStart");
+  angle_start = lua_tointeger(L, -1);
+  lua_pop(L, 1);
+
+  lua_getfield(L, -1, "angleRange");
+  angle_range = lua_tointeger(L, -1);
+  lua_pop(L, 1);
+
+  lv_pointer_set_range(obj, value_start, value_range, angle_start,
+                        angle_range);
+}
+
+/* clang-format off */
+static const luavgl_value_setter_t pointer_property_table[] = {
+    {"range", SETTER_TYPE_STACK, {.setter_stack = _lv_pointer_set_range}},
+    {"value", SETTER_TYPE_INT, {.setter = (setter_int_t)lv_pointer_set_value}},
+};
+
+/* clang-format on */
+
+static int luavgl_pointer_set_property_kv(lua_State *L, void *data)
+{
+  lv_obj_t *obj = data;
+  int ret = luavgl_set_property(L, obj, pointer_property_table);
+
+  if (ret == 0) {
+    return 0;
+  }
+
+  /* a base obj property? */
+  ret = luavgl_img_set_property_kv(L, obj);
+  if (ret != 0) {
+    printf("unkown property for pointer: %s\n", lua_tostring(L, -2));
+  }
+
+  return -1;
+}
+
+static int luavgl_pointer_set(lua_State *L)
+{
+  lv_obj_t *obj = luavgl_to_obj(L, 1);
+
+  if (!lua_istable(L, -1)) {
+    luaL_error(L, "expect a table on 2nd para.");
+    return 0;
+  }
+
+  luavgl_iterate(L, -1, luavgl_pointer_set_property_kv, obj);
+
+  return 0;
+}
+
+static const luaL_Reg luavgl_pointer_methods[] = {
+    {"set", luavgl_pointer_set},
+
+    {NULL,  NULL              },
+};
+
+void luavgl_pointer_init(lua_State *L)
+{
+  luavgl_obj_newmetatable(L, &lv_pointer_class, "lv_pointer",
+                          luavgl_pointer_methods);
+  lua_pop(L, 1);
+
+  luaL_getmetatable(L, "widgets");
+  lua_getfield(L, -1, "__index");
+  lua_pushcfunction(L, luavgl_pointer_create);
+  lua_setfield(L, -2, "Pointer");
+  lua_pop(L, 2);
+}