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/**
* @file lv_led.c
*
*/
/*********************
* INCLUDES
*********************/
#include "../../core/lv_obj_private.h"
#include "../../core/lv_obj_class_private.h"
#include "lv_led_private.h"
#if LV_USE_LED
#include "../../misc/lv_assert.h"
#include "../../themes/lv_theme.h"
#include "../../misc/lv_color.h"
/*********************
* DEFINES
*********************/
#define MY_CLASS (&lv_led_class)
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static void lv_led_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj);
static void lv_led_event(const lv_obj_class_t * class_p, lv_event_t * e);
/**********************
* STATIC VARIABLES
**********************/
const lv_obj_class_t lv_led_class = {
.base_class = &lv_obj_class,
.constructor_cb = lv_led_constructor,
.width_def = LV_DPI_DEF / 5,
.height_def = LV_DPI_DEF / 5,
.event_cb = lv_led_event,
.instance_size = sizeof(lv_led_t),
.name = "led",
};
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
lv_obj_t * lv_led_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;
}
/*=====================
* Setter functions
*====================*/
void lv_led_set_color(lv_obj_t * obj, lv_color_t color)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_led_t * led = (lv_led_t *)obj;
led->color = color;
lv_obj_invalidate(obj);
}
void lv_led_set_brightness(lv_obj_t * obj, uint8_t bright)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_led_t * led = (lv_led_t *)obj;
if(led->bright == bright) return;
led->bright = LV_CLAMP(LV_LED_BRIGHT_MIN, bright, LV_LED_BRIGHT_MAX);
/*Invalidate the object there fore it will be redrawn*/
lv_obj_invalidate(obj);
}
void lv_led_on(lv_obj_t * led)
{
lv_led_set_brightness(led, LV_LED_BRIGHT_MAX);
}
void lv_led_off(lv_obj_t * led)
{
lv_led_set_brightness(led, LV_LED_BRIGHT_MIN);
}
void lv_led_toggle(lv_obj_t * obj)
{
uint8_t bright = lv_led_get_brightness(obj);
if(bright > (LV_LED_BRIGHT_MIN + LV_LED_BRIGHT_MAX) >> 1)
lv_led_off(obj);
else
lv_led_on(obj);
}
/*=====================
* Getter functions
*====================*/
uint8_t lv_led_get_brightness(const lv_obj_t * obj)
{
LV_ASSERT_OBJ(obj, MY_CLASS);
lv_led_t * led = (lv_led_t *)obj;
return led->bright;
}
/**********************
* STATIC FUNCTIONS
**********************/
static void lv_led_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)
{
LV_UNUSED(class_p);
lv_led_t * led = (lv_led_t *)obj;
led->color = lv_theme_get_color_primary(obj);
led->bright = LV_LED_BRIGHT_MAX;
}
static void lv_led_event(const lv_obj_class_t * class_p, lv_event_t * e)
{
LV_UNUSED(class_p);
lv_result_t res;
/* Call the ancestor's event handler */
lv_event_code_t code = lv_event_get_code(e);
if(code != LV_EVENT_DRAW_MAIN && code != LV_EVENT_DRAW_MAIN_END) {
res = lv_obj_event_base(MY_CLASS, e);
if(res != LV_RESULT_OK) return;
}
lv_obj_t * obj = lv_event_get_current_target(e);
if(code == LV_EVENT_DRAW_MAIN) {
/*Make darker colors in a temporary style according to the brightness*/
lv_led_t * led = (lv_led_t *)obj;
lv_draw_rect_dsc_t rect_dsc;
lv_draw_rect_dsc_init(&rect_dsc);
lv_obj_init_draw_rect_dsc(obj, LV_PART_MAIN, &rect_dsc);
/*Use the original colors brightness to modify color->led*/
rect_dsc.bg_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.bg_color));
rect_dsc.bg_grad.stops[0].color = lv_color_mix(led->color, lv_color_black(),
lv_color_brightness(rect_dsc.bg_grad.stops[0].color));
rect_dsc.bg_grad.stops[1].color = lv_color_mix(led->color, lv_color_black(),
lv_color_brightness(rect_dsc.bg_grad.stops[1].color));
rect_dsc.shadow_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.shadow_color));
rect_dsc.border_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.border_color));
rect_dsc.outline_color = lv_color_mix(led->color, lv_color_black(), lv_color_brightness(rect_dsc.outline_color));
/*Mix. the color with black proportionally with brightness*/
rect_dsc.bg_color = lv_color_mix(rect_dsc.bg_color, lv_color_black(), led->bright);
rect_dsc.bg_grad.stops[0].color = lv_color_mix(rect_dsc.bg_grad.stops[0].color, lv_color_black(), led->bright);
rect_dsc.bg_grad.stops[1].color = lv_color_mix(rect_dsc.bg_grad.stops[1].color, lv_color_black(), led->bright);
rect_dsc.border_color = lv_color_mix(rect_dsc.border_color, lv_color_black(), led->bright);
rect_dsc.shadow_color = lv_color_mix(rect_dsc.shadow_color, lv_color_black(), led->bright);
rect_dsc.outline_color = lv_color_mix(rect_dsc.outline_color, lv_color_black(), led->bright);
/*Set the current shadow width according to brightness proportionally between LV_LED_BRIGHT_OFF
* and LV_LED_BRIGHT_ON*/
rect_dsc.shadow_width = ((led->bright - LV_LED_BRIGHT_MIN) * rect_dsc.shadow_width) /
(LV_LED_BRIGHT_MAX - LV_LED_BRIGHT_MIN);
rect_dsc.shadow_spread = ((led->bright - LV_LED_BRIGHT_MIN) * rect_dsc.shadow_spread) /
(LV_LED_BRIGHT_MAX - LV_LED_BRIGHT_MIN);
lv_layer_t * layer = lv_event_get_layer(e);
lv_draw_rect(layer, &rect_dsc, &obj->coords);
}
}
#endif
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