add lv_components as src/extra and minor fixes
This commit is contained in:
Gabor Kiss-Vamosi
212
src/extra/widgets/led/lv_led.c
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212
src/extra/widgets/led/lv_led.c
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/**
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* @file lv_led.c
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*
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*/
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/*********************
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* INCLUDES
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*********************/
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#include "lv_led.h"
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#if LV_USE_LED
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/*********************
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* DEFINES
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*********************/
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#define LV_LED_WIDTH_DEF (LV_DPI / 3)
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#define LV_LED_HEIGHT_DEF (LV_DPI / 3)
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#ifndef LV_LED_BRIGHT_MIN
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# define LV_LED_BRIGHT_MIN 80
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#endif
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#ifndef LV_LED_BRIGHT_MAX
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# define LV_LED_BRIGHT_MAX 255
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#endif
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/**********************
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* TYPEDEFS
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**********************/
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/**********************
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* STATIC PROTOTYPES
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**********************/
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static lv_draw_res_t lv_led_draw(lv_obj_t * led, const lv_area_t * clip_area, lv_draw_mode_t mode);
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/**********************
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* STATIC VARIABLES
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**********************/
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static bool inited;
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static lv_draw_cb_t ancestor_draw;
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/**********************
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* MACROS
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**********************/
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/**********************
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* GLOBAL FUNCTIONS
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**********************/
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/**
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* Create a led objects
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* @param par pointer to an object, it will be the parent of the new led
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* @param copy pointer to a led object, if not NULL then the new object will be copied from it
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* @return pointer to the created led
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*/
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lv_obj_t * lv_led_create(lv_obj_t * parent)
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{
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static lv_style_t style_main;
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if(!inited) {
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lv_style_init(&style_main);
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lv_style_set_bg_opa(&style_main, LV_STATE_DEFAULT, LV_OPA_COVER);
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lv_style_set_bg_color(&style_main, LV_STATE_DEFAULT, lv_theme_get_color_primary());
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lv_style_set_border_width(&style_main, LV_STATE_DEFAULT, 0);
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lv_style_set_radius(&style_main, LV_STATE_DEFAULT, LV_RADIUS_CIRCLE);
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#if LV_USE_SHADOW
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lv_style_set_shadow_width(&style_main, LV_STATE_DEFAULT, LV_DPX(15));
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lv_style_set_shadow_color(&style_main, LV_STATE_DEFAULT, lv_theme_get_color_primary());
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lv_style_set_shadow_spread(&style_main, LV_STATE_DEFAULT, LV_DPX(5));
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#endif
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}
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/*Create the ancestor basic object*/
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lv_obj_t * led = lv_obj_create(parent, NULL);
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LV_ASSERT_MEM(led);
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if(led == NULL) return NULL;
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if(ancestor_draw == NULL) ancestor_draw = lv_obj_get_draw_cb(led);
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/*Allocate the object type specific extended data*/
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lv_led_ext_t * ext = lv_obj_allocate_ext_attr(led, sizeof(lv_led_ext_t));
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LV_ASSERT_MEM(ext);
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if(ext == NULL) {
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lv_obj_del(led);
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return NULL;
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}
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ext->bright = LV_LED_BRIGHT_MAX;
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lv_obj_set_draw_cb(led, lv_led_draw);
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lv_obj_set_size(led, LV_LED_WIDTH_DEF, LV_LED_HEIGHT_DEF);
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lv_obj_add_style(led, LV_OBJ_PART_MAIN, &style_main);
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LV_LOG_INFO("led created");
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return led;
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}
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/*=====================
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* Setter functions
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*====================*/
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/**
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* Set the brightness of a LED object
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* @param led pointer to a LED object
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* @param bright LV_LED_BRIGHT_MIN (max. dark) ... LV_LED_BRIGHT_MAX (max. light)
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*/
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void lv_led_set_bright(lv_obj_t * led, uint8_t bright)
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{
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/*Set the brightness*/
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lv_led_ext_t * ext = lv_obj_get_ext_attr(led);
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if(ext->bright == bright) return;
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if(bright <= LV_LED_BRIGHT_MIN) bright = LV_LED_BRIGHT_MIN;
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if(bright >= LV_LED_BRIGHT_MAX) bright = LV_LED_BRIGHT_MAX;
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ext->bright = bright;
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/*Invalidate the object there fore it will be redrawn*/
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lv_obj_invalidate(led);
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}
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/**
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* Light on a LED
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* @param led pointer to a LED object
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*/
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void lv_led_on(lv_obj_t * led)
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{
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lv_led_set_bright(led, LV_LED_BRIGHT_MAX);
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}
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/**
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* Light off a LED
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* @param led pointer to a LED object
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*/
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void lv_led_off(lv_obj_t * led)
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{
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lv_led_set_bright(led, LV_LED_BRIGHT_MIN);
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}
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/**
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* Toggle the state of a LED
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* @param led pointer to a LED object
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*/
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void lv_led_toggle(lv_obj_t * led)
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{
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uint8_t bright = lv_led_get_bright(led);
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if(bright > (LV_LED_BRIGHT_MIN + LV_LED_BRIGHT_MAX) >> 1)
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lv_led_off(led);
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else
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lv_led_on(led);
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}
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/*=====================
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* Getter functions
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*====================*/
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/**
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* Get the brightness of a LEd object
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* @param led pointer to LED object
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* @return bright 0 (max. dark) ... 255 (max. light)
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*/
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uint8_t lv_led_get_bright(const lv_obj_t * led)
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{
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lv_led_ext_t * ext = lv_obj_get_ext_attr(led);
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return ext->bright;
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}
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/**********************
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* STATIC FUNCTIONS
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**********************/
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/**
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* Handle the drawing related tasks of the leds
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* @param led pointer to an object
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* @param clip_area the object will be drawn only in this area
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* @param mode LV_DRAW_COVER_CHK: only check if the object fully covers the 'mask_p' area
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* (return 'true' if yes)
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* LV_DRAW_DRAW: draw the object (always return 'true')
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* LV_DRAW_DRAW_POST: drawing after every children are drawn
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* @param return an element of `lv_draw_res_t`
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*/
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static lv_draw_res_t lv_led_draw(lv_obj_t * led, const lv_area_t * clip_area, lv_draw_mode_t mode)
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{
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if(mode == LV_DRAW_COVER_CHK) {
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/*Return false if the object is not covers the clip_area area*/
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return ancestor_draw(led, clip_area, mode);
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}
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else if(mode == LV_DRAW_DRAW_MAIN) {
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/*Make darker colors in a temporary style according to the brightness*/
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lv_led_ext_t * ext = lv_obj_get_ext_attr(led);
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lv_draw_rect_dsc_t rect_dsc;
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lv_draw_rect_dsc_init(&rect_dsc);
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lv_obj_init_draw_rect_dsc(led, LV_OBJ_PART_MAIN, &rect_dsc);
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/*Mix. the color with black proportionally with brightness*/
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rect_dsc.bg_color = lv_color_mix(rect_dsc.bg_color, LV_COLOR_BLACK, ext->bright);
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rect_dsc.bg_grad_color = lv_color_mix(rect_dsc.bg_grad_color, LV_COLOR_BLACK, ext->bright);
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rect_dsc.border_color = lv_color_mix(rect_dsc.border_color, LV_COLOR_BLACK, ext->bright);
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rect_dsc.shadow_color = lv_color_mix(rect_dsc.shadow_color, LV_COLOR_BLACK, ext->bright);
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/*Set the current shadow width according to brightness proportionally between LV_LED_BRIGHT_OFF
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* and LV_LED_BRIGHT_ON*/
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rect_dsc.shadow_width = ((ext->bright - LV_LED_BRIGHT_MIN) * rect_dsc.shadow_width) /
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(LV_LED_BRIGHT_MAX - LV_LED_BRIGHT_MIN);
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rect_dsc.shadow_spread = ((ext->bright - LV_LED_BRIGHT_MIN) * rect_dsc.shadow_spread) /
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(LV_LED_BRIGHT_MAX - LV_LED_BRIGHT_MIN);
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lv_draw_rect(&led->coords, clip_area, &rect_dsc);
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}
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return LV_DRAW_RES_OK;
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}
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#endif
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