（ESP-IDF）LVGL创建对象

创建一个对象

#include "lvpage_setting.h"
#include "lvgl.h"
#include "esp_log.h"

static char *TAG = "lvpage_setting";

static void settings_event_handler(lv_event_t *e) {
    if (e->code == LV_EVENT_CLICKED) {
        ESP_LOGI(TAG, "[SETTINGS] Icon clicked!\r\n");  // 打印LOG
    }
}

lv_obj_t *lv_example_settings_page(lv_obj_t *scr) {
    // 在父对象上创建一个对象
    lv_obj_t * settings_icon = lv_label_create(scr);
    // 这个对象为一个图标
    lv_label_set_text(settings_icon, LV_SYMBOL_SETTINGS);

    // 这个对象可以点击
    lv_obj_add_flag(settings_icon, LV_OBJ_FLAG_CLICKABLE);
    // 点击之后触发settings_event_handler回调
    lv_obj_add_event_cb(settings_icon, settings_event_handler, LV_EVENT_CLICKED, NULL);

    // 统一添加样式
    static lv_style_t icon_style;
    lv_style_init(&icon_style);
    lv_style_set_align(&icon_style,LV_ALIGN_CENTER);
    lv_style_set_text_color(&icon_style, lv_color_hex(0x3498db));
    lv_style_set_text_font(&icon_style, &lv_font_montserrat_48);
    lv_obj_add_style(settings_icon, &icon_style, LV_PART_MAIN);

    return scr;  // 返回新创建的屏幕对象
}