源代码:
//14 LED控件
//14.1 创建标签
/*Create a style for the LED*/
static lv_style_t style_led;
lv_style_copy(&style_led, &lv_style_pretty_color);
style_led.body.radius = LV_RADIUS_CIRCLE;
style_led.body.main_color = LV_COLOR_MAKE(0xb5, 0x0f, 0x04);
style_led.body.grad_color = LV_COLOR_MAKE(0x50, 0x07, 0x02);
style_led.body.border.color = LV_COLOR_MAKE(0xfa, 0x0f, 0x00);
style_led.body.border.width = 3;
style_led.body.border.opa = LV_OPA_30;
style_led.body.shadow.color = LV_COLOR_MAKE(0xb5, 0x0f, 0x04);
style_led.body.shadow.width = 5;
/*Create a LED and switch it OFF*/
lv_obj_t * led1 = lv_led_create(lv_scr_act(), NULL);
lv_led_set_style(led1, LV_LED_STYLE_MAIN, &style_led);
lv_obj_align(led1, NULL, LV_ALIGN_IN_TOP_LEFT, 0, 80);
lv_led_off(led1);
/*Copy the previous LED and set a brightness*/
lv_obj_t * led2 = lv_led_create(lv_scr_act(), led1);
lv_obj_align(led2, NULL, LV_ALIGN_IN_TOP_LEFT, 80, 80);
lv_led_set_bright(led2, 100);
/*Copy the previous LED and switch it ON*/
lv_obj_t * led3 = lv_led_create(lv_scr_act(), led1);
lv_obj_align(led3, NULL, LV_ALIGN_IN_TOP_LEFT, 160, 80);
lv_led_on(led3);
效果演示: