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hekate/bdk/libs/lvgl/lv_objx/lv_led.c
CTCaer 185526d134 Introducing Bootloader Development Kit (BDK)
BDK will allow developers to use the full collection of drivers,
with limited editing, if any, for making payloads for Nintendo Switch.

Using a single source for everything will also help decoupling
Switch specific code and easily port it to other Tegra X1/X1+ platforms.
And maybe even to lower targets.

Everything is now centrilized into bdk folder.
Every module or project can utilize it by simply including it.

This is just the start and it will continue to improve.
2020-06-14 15:25:21 +03:00

244 lines
7.1 KiB
C

/**
* @file lv_led.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_led.h"
#if USE_LV_LED != 0
#include "../lv_themes/lv_theme.h"
#include "../lv_draw/lv_draw.h"
/*********************
* DEFINES
*********************/
#define LV_LED_WIDTH_DEF (LV_DPI / 3)
#define LV_LED_HEIGHT_DEF (LV_DPI / 3)
#define LV_LED_BRIGHT_OFF 100
#define LV_LED_BRIGHT_ON 255
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
static bool lv_led_design(lv_obj_t * led, const lv_area_t * mask, lv_design_mode_t mode);
static lv_res_t lv_led_signal(lv_obj_t * led, lv_signal_t sign, void * param);
/**********************
* STATIC VARIABLES
**********************/
static lv_design_func_t ancestor_design_f;
static lv_signal_func_t ancestor_signal;
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
/**
* Create a led objects
* @param par pointer to an object, it will be the parent of the new led
* @param copy pointer to a led object, if not NULL then the new object will be copied from it
* @return pointer to the created led
*/
lv_obj_t * lv_led_create(lv_obj_t * par, const lv_obj_t * copy)
{
LV_LOG_TRACE("led create started");
/*Create the ancestor basic object*/
lv_obj_t * new_led = lv_obj_create(par, copy);
lv_mem_assert(new_led);
if(new_led == NULL) return NULL;
if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_func(new_led);
if(ancestor_design_f == NULL) ancestor_design_f = lv_obj_get_design_func(new_led);
/*Allocate the object type specific extended data*/
lv_led_ext_t * ext = lv_obj_allocate_ext_attr(new_led, sizeof(lv_led_ext_t));
lv_mem_assert(ext);
if(ext == NULL) return NULL;
ext->bright = LV_LED_BRIGHT_ON;
lv_obj_set_signal_func(new_led, lv_led_signal);
lv_obj_set_design_func(new_led, lv_led_design);
/*Init the new led object*/
if(copy == NULL) {
lv_obj_set_size(new_led, LV_LED_WIDTH_DEF, LV_LED_HEIGHT_DEF);
/*Set the default styles*/
lv_theme_t * th = lv_theme_get_current();
if(th) {
lv_led_set_style(new_led, th->led);
} else {
lv_led_set_style(new_led, &lv_style_pretty_color);
}
}
/*Copy an existing object*/
else {
lv_led_ext_t * copy_ext = lv_obj_get_ext_attr(copy);
ext->bright = copy_ext->bright;
/*Refresh the style with new signal function*/
lv_obj_refresh_style(new_led);
}
LV_LOG_INFO("led created");
return new_led;
}
/*=====================
* Setter functions
*====================*/
/**
* Set the brightness of a LED object
* @param led pointer to a LED object
* @param bright 0 (max. dark) ... 255 (max. light)
*/
void lv_led_set_bright(lv_obj_t * led, uint8_t bright)
{
/*Set the brightness*/
lv_led_ext_t * ext = lv_obj_get_ext_attr(led);
if(ext->bright == bright) return;
ext->bright = bright;
/*Invalidate the object there fore it will be redrawn*/
lv_obj_invalidate(led);
}
/**
* Light on a LED
* @param led pointer to a LED object
*/
void lv_led_on(lv_obj_t * led)
{
lv_led_set_bright(led, LV_LED_BRIGHT_ON);
}
/**
* Light off a LED
* @param led pointer to a LED object
*/
void lv_led_off(lv_obj_t * led)
{
lv_led_set_bright(led, LV_LED_BRIGHT_OFF);
}
/**
* Toggle the state of a LED
* @param led pointer to a LED object
*/
void lv_led_toggle(lv_obj_t * led)
{
uint8_t bright = lv_led_get_bright(led);
if(bright > (LV_LED_BRIGHT_OFF + LV_LED_BRIGHT_ON) >> 1) lv_led_off(led);
else lv_led_on(led);
}
/*=====================
* Getter functions
*====================*/
/**
* Get the brightness of a LEd object
* @param led pointer to LED object
* @return bright 0 (max. dark) ... 255 (max. light)
*/
uint8_t lv_led_get_bright(const lv_obj_t * led)
{
lv_led_ext_t * ext = lv_obj_get_ext_attr(led);
return ext->bright;
}
/**********************
* STATIC FUNCTIONS
**********************/
/**
* Handle the drawing related tasks of the leds
* @param led pointer to an object
* @param mask the object will be drawn only in this area
* @param mode LV_DESIGN_COVER_CHK: only check if the object fully covers the 'mask_p' area
* (return 'true' if yes)
* LV_DESIGN_DRAW: draw the object (always return 'true')
* LV_DESIGN_DRAW_POST: drawing after every children are drawn
* @param return true/false, depends on 'mode'
*/
static bool lv_led_design(lv_obj_t * led, const lv_area_t * mask, lv_design_mode_t mode)
{
if(mode == LV_DESIGN_COVER_CHK) {
/*Return false if the object is not covers the mask area*/
return ancestor_design_f(led, mask, mode);
} else if(mode == LV_DESIGN_DRAW_MAIN) {
/*Make darker colors in a temporary style according to the brightness*/
lv_led_ext_t * ext = lv_obj_get_ext_attr(led);
lv_style_t * style = lv_obj_get_style(led);
/* Store the real pointer because of 'lv_group'
* If the object is in focus 'lv_obj_get_style()' will give a pointer to tmp style
* and to the real object style. It is important because of style change tricks below*/
lv_style_t * style_ori_p = led->style_p;
/*Create a temporal style*/
lv_style_t leds_tmp;
memcpy(&leds_tmp, style, sizeof(leds_tmp));
/*Mix. the color with black proportionally with brightness*/
leds_tmp.body.main_color = lv_color_mix(leds_tmp.body.main_color, LV_COLOR_BLACK, ext->bright);
leds_tmp.body.grad_color = lv_color_mix(leds_tmp.body.grad_color, LV_COLOR_BLACK, ext->bright);
leds_tmp.body.border.color = lv_color_mix(leds_tmp.body.border.color, LV_COLOR_BLACK, ext->bright);
/*Set the current swidth according to brightness proportionally between LV_LED_BRIGHT_OFF and LV_LED_BRIGHT_ON*/
uint16_t bright_tmp = ext->bright;
leds_tmp.body.shadow.width = ((bright_tmp - LV_LED_BRIGHT_OFF) * style->body.shadow.width) / (LV_LED_BRIGHT_ON - LV_LED_BRIGHT_OFF);
led->style_p = &leds_tmp;
ancestor_design_f(led, mask, mode);
led->style_p = style_ori_p; /*Restore the ORIGINAL style pointer*/
}
return true;
}
/**
* Signal function of the led
* @param led pointer to a led object
* @param sign a signal type from lv_signal_t enum
* @param param pointer to a signal specific variable
* @return LV_RES_OK: the object is not deleted in the function; LV_RES_INV: the object is deleted
*/
static lv_res_t lv_led_signal(lv_obj_t * led, lv_signal_t sign, void * param)
{
lv_res_t res;
/* Include the ancient signal function */
res = ancestor_signal(led, sign, param);
if(res != LV_RES_OK) return res;
if(sign == LV_SIGNAL_GET_TYPE) {
lv_obj_type_t * buf = param;
uint8_t i;
for(i = 0; i < LV_MAX_ANCESTOR_NUM - 1; i++) { /*Find the last set data*/
if(buf->type[i] == NULL) break;
}
buf->type[i] = "lv_led";
}
return res;
}
#endif