1 files changed, 251 insertions, 0 deletions
diff --git a/src/libs/lvgl/src/lv_widgets/lv_led.c b/src/libs/lvgl/src/lv_widgets/lv_led.c
new file mode 100644
index 00000000..dea778d7
--- /dev/null
+++ b/src/libs/lvgl/src/lv_widgets/lv_led.c
@@ -0,0 +1,251 @@
+/**
+ * @file lv_led.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "lv_led.h"
+#if LV_USE_LED != 0
+
+#include "../lv_misc/lv_debug.h"
+#include "../lv_themes/lv_theme.h"
+#include "../lv_draw/lv_draw.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+#define LV_OBJX_NAME "lv_led"
+
+#define LV_LED_WIDTH_DEF (LV_DPI / 3)
+#define LV_LED_HEIGHT_DEF (LV_DPI / 3)
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static lv_design_res_t lv_led_design(lv_obj_t * led, const lv_area_t * clip_area, 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_cb_t ancestor_design;
+static lv_signal_cb_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 * led = lv_obj_create(par, copy);
+    LV_ASSERT_MEM(led);
+    if(led == NULL) return NULL;
+
+    if(ancestor_signal == NULL) ancestor_signal = lv_obj_get_signal_cb(led);
+    if(ancestor_design == NULL) ancestor_design = lv_obj_get_design_cb(led);
+
+    /*Allocate the object type specific extended data*/
+    lv_led_ext_t * ext = lv_obj_allocate_ext_attr(led, sizeof(lv_led_ext_t));
+    LV_ASSERT_MEM(ext);
+    if(ext == NULL) {
+        lv_obj_del(led);
+        return NULL;
+    }
+
+    ext->bright = LV_LED_BRIGHT_MAX;
+
+    lv_obj_set_signal_cb(led, lv_led_signal);
+    lv_obj_set_design_cb(led, lv_led_design);
+
+    /*Init the new led object*/
+    if(copy == NULL) {
+        lv_obj_set_size(led, LV_LED_WIDTH_DEF, LV_LED_HEIGHT_DEF);
+
+        lv_theme_apply(led, LV_THEME_LED);
+    }
+    /*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(led, LV_OBJ_PART_ALL, LV_STYLE_PROP_ALL);
+    }
+
+    LV_LOG_INFO("led created");
+
+    return led;
+}
+
+/*=====================
+ * Setter functions
+ *====================*/
+
+/**
+ * Set the brightness of a LED object
+ * @param led pointer to a LED object
+ * @param bright LV_LED_BRIGHT_MIN (max. dark) ... LV_LED_BRIGHT_MAX (max. light)
+ */
+void lv_led_set_bright(lv_obj_t * led, uint8_t bright)
+{
+    LV_ASSERT_OBJ(led, LV_OBJX_NAME);
+
+    /*Set the brightness*/
+    lv_led_ext_t * ext = lv_obj_get_ext_attr(led);
+    if(ext->bright == bright) return;
+
+    if(bright <= LV_LED_BRIGHT_MIN) bright = LV_LED_BRIGHT_MIN;
+    if(bright >= LV_LED_BRIGHT_MAX) bright = LV_LED_BRIGHT_MAX;
+
+    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_ASSERT_OBJ(led, LV_OBJX_NAME);
+
+    lv_led_set_bright(led, LV_LED_BRIGHT_MAX);
+}
+
+/**
+ * Light off a LED
+ * @param led pointer to a LED object
+ */
+void lv_led_off(lv_obj_t * led)
+{
+    LV_ASSERT_OBJ(led, LV_OBJX_NAME);
+
+    lv_led_set_bright(led, LV_LED_BRIGHT_MIN);
+}
+
+/**
+ * Toggle the state of a LED
+ * @param led pointer to a LED object
+ */
+void lv_led_toggle(lv_obj_t * led)
+{
+    LV_ASSERT_OBJ(led, LV_OBJX_NAME);
+
+    uint8_t bright = lv_led_get_bright(led);
+    if(bright > (LV_LED_BRIGHT_MIN + LV_LED_BRIGHT_MAX) >> 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_ASSERT_OBJ(led, LV_OBJX_NAME);
+
+    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 clip_area 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 an element of `lv_design_res_t`
+ */
+static lv_design_res_t lv_led_design(lv_obj_t * led, const lv_area_t * clip_area, lv_design_mode_t mode)
+{
+    if(mode == LV_DESIGN_COVER_CHK) {
+        /*Return false if the object is not covers the clip_area area*/
+        return ancestor_design(led, clip_area, 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_draw_rect_dsc_t rect_dsc;
+        lv_draw_rect_dsc_init(&rect_dsc);
+        lv_obj_init_draw_rect_dsc(led, LV_LED_PART_MAIN, &rect_dsc);
+
+        /*Mix. the color with black proportionally with brightness*/
+        rect_dsc.bg_color   = lv_color_mix(rect_dsc.bg_color, LV_COLOR_BLACK, ext->bright);
+        rect_dsc.bg_grad_color   = lv_color_mix(rect_dsc.bg_grad_color, LV_COLOR_BLACK, ext->bright);
+        rect_dsc.border_color = lv_color_mix(rect_dsc.border_color, LV_COLOR_BLACK, ext->bright);
+        rect_dsc.shadow_color = lv_color_mix(rect_dsc.shadow_color, LV_COLOR_BLACK, ext->bright);
+
+        /*Set the current shadow width according to brightness proportionally between LV_LED_BRIGHT_OFF
+         * and LV_LED_BRIGHT_ON*/
+        rect_dsc.shadow_width = ((ext->bright - LV_LED_BRIGHT_MIN) * rect_dsc.shadow_width) /
+                                (LV_LED_BRIGHT_MAX - LV_LED_BRIGHT_MIN);
+        rect_dsc.shadow_spread = ((ext->bright - LV_LED_BRIGHT_MIN) * rect_dsc.shadow_spread) /
+                                 (LV_LED_BRIGHT_MAX - LV_LED_BRIGHT_MIN);
+
+        lv_draw_rect(&led->coords, clip_area, &rect_dsc);
+    }
+    return LV_DESIGN_RES_OK;
+}
+
+/**
+ * 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