Tasmota/tasmota/berry/lvgl_examples/widget_test.be

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#- start LVGL and init environment -#
lv.start()
import string
scr = lv.scr_act() # default screean object
def ctorcb(class_p, obj)
import string
print(string.format("> ctorcb class_p=0x%08X obj=0x%08X", class_p, obj))
end
def dtorcb(class_p, obj)
import string
print(string.format("> dtorcb class_p=0x%08X obj=0x%08X", class_p, obj))
end
def eventcb(class_p, e)
import string
import introspect
var event = lv_event(e)
var obj = introspect.fromptr(event.user_data)
var event_code = event.code
var target = event.target
print(string.format("> event class_p=0x%08X event=%s obj=%s code=%i",
class_p, str(event), str(obj), event_code))
end
import cb
var cb_ctor = cb.gen_cb(ctorcb)
var cb_dtor = cb.gen_cb(dtorcb)
var cb_event = cb.gen_cb(eventcb)
# static void lv_img_event(const lv_obj_class_t * class_p, lv_event_t * e)
#-
class_def = lv_obj_class(lv_obj._class).copy()
print(class_def)
print(string.format("base_class = 0x%08X", class_def.base_class))
print(string.format("constructor_cb = 0x%08X", class_def.constructor_cb))
print(string.format("destructor_cb = 0x%08X", class_def.destructor_cb))
print(string.format("user_data = 0x%08X", class_def.user_data))
print(string.format("event_cb = 0x%08X", class_def.event_cb))
print(string.format("width_def = %i", class_def.width_def))
print(string.format("height_def = %i", class_def.height_def))
print(string.format("editable = %i", class_def.editable))
print(string.format("group_def = %i", class_def.group_def))
print(string.format("instance_size = %i", class_def.instance_size))
-#
import introspect
class_def = lv_obj_class()
class_def.base_class = lv_obj._class
class_def.constructor_cb = cb_ctor
class_def.destructor_cb = cb_dtor
class_def.user_data = introspect.toptr(class_def) # self
class_def.event_cb = cb_event
class_def.width_def = lv.SIZE_CONTENT
class_def.height_def = lv.SIZE_CONTENT
class_def.editable = lv.OBJ_CLASS_EDITABLE_INHERIT
class_def.group_def = lv.OBJ_CLASS_GROUP_DEF_INHERIT
class_def.instance_size = lv_obj_class(class_def.base_class).instance_size
var obj = lv.obj_class_create_obj(class_def, scr)
print("--marker--")
obj.set_user_data(introspect.toptr(obj))
obj.class_init_obj()
# obj.class_init_obj()
# ctorcb 1065361552 1065364576
# dtorcb 1065361552 1073421092
# dtorcb 1065361552 1073421044
# dtorcb 1065361552 1073421732
# dtorcb 1065361552 1073421732
# obj.class_init_obj()
# ctorcb 1065361552 1065364576
# dtorcb 1065361552 1073421092
# dtorcb 1065361552 1073421044
# dtorcb 1065361552 1073421732
# dtorcb 1065361552 1073421732
# lv_obj_t * lv_btn_create(lv_obj_t * parent)
# {
# LV_LOG_INFO("begin")
# lv_obj_t * obj = lv_obj_class_create_obj(MY_CLASS, parent);
# lv_obj_class_init_obj(obj);
# return obj;
# }
# LV_SIZE_CONTENT
# LV_OBJ_CLASS_EDITABLE_INHERIT
# LV_OBJ_CLASS_EDITABLE_TRUE
# LV_OBJ_CLASS_EDITABLE_FALSE
# LV_OBJ_CLASS_GROUP_DEF_INHERIT
# LV_OBJ_CLASS_GROUP_DEF_TRUE
# LV_OBJ_CLASS_GROUP_DEF_FALSE
# class_def = lv_obj_class(lv_btn._class).copy()
# lv_event = [ # valid LVGL8
# [lv_obj_ptr, "target"],
# [lv_obj_ptr, "current_target"],
# [lv_event_code, "code"],
# [ptr, "user_data"],
# [ptr, "param"],
# [lv_event_ptr, "prev"],
# [uint8_t_1, "deleted"],
# ]
# lv_event = ctypes.structure(lv_event, "lv_event")
# lv_obj_class = [ # valid LVGL8
# [lv_obj_class_ptr, "base_class"],
# [constructor_cb, "constructor_cb"],
# [destructor_cb, "destructor_cb"],
# [ptr, "user_data"],
# [event_cb, "event_cb"],
# [lv_coord, "width_def"],
# [lv_coord, "height_def"],
# [uint8_t_2, "editable"],
# [uint8_t_2, "group_def"],
# [uint16_t_16, "instance_size"],
# ]
# const be_ctypes_structure_t be_lv_obj_class = {
# 29, /* size in bytes */
# 10, /* number of elements */
# (const be_ctypes_structure_item_t[10]) {
# { "base_class", 0, 0, 0, 4, 0 },
# { "constructor_cb", 4, 0, 0, 4, 0 },
# { "destructor_cb", 8, 0, 0, 4, 0 },
# { "editable", 24, 0, 2, 0, 0 },
# { "event_cb", 16, 0, 0, 4, 0 },
# { "group_def", 24, 2, 2, 0, 0 },
# { "height_def", 22, 0, 0, 12, 0 },
# { "instance_size", 24, 4, 16, 0, 0 },
# { "user_data", 12, 0, 0, 4, 0 },
# { "width_def", 20, 0, 0, 12, 0 },
# }};
# typedef struct be_ctypes_structure_item_t {
# const char * name;
# uint16_t offset_bytes;
# uint8_t offset_bits : 3;
# uint8_t len_bits : 5;
# int8_t type : 5;
# uint8_t mapping : 3;
# } be_ctypes_structure_item_t;