Wire up setter and countdown

src/c/main.c

@@ -1,12 +1,20 @@
 #include <pebble.h>
 
+// types
+typedef struct SetterTime {
+	uint8_t HourWIP;
+	uint8_t MinuteWIP;
+	uint8_t HourSet;
+	uint8_t MinuteSet;
+} __attribute__((__packed__)) SetterTime;
+
 // layer-age
 static Window *s_window;
 static Layer *s_top_bar_layer;
 static Layer *s_bottom_bar_layer;
 static BitmapLayer *s_clock_bmp_layer;
 static BitmapLayer *s_check_bmp_layer;
-static TextLayer *s_remaining_txt_layer;
+static TextLayer *s_countdown_txt_layer;
 static TextLayer *s_setter_txt_layer;
 static Layer *s_highlight_layer;
 
@@ -16,6 +24,7 @@ static GBitmap *s_check_bmp;
 
 // global vars
 static uint8_t s_highlight_pos = 0;
+static struct SetterTime s_setter_time;
 
 // constants
 static const uint8_t s_edge_bar_height = ((PBL_DISPLAY_HEIGHT / 7) * 2);
@@ -24,8 +33,90 @@ static const GColor s_highlight_color = GColorMediumAquamarine;
 
 /////////////////////////////////
 
+static void update_countdown_display(struct tm *tick_time, TimeUnits units_changed) {
+	struct tm now_tm = *tick_time;
+
+	// Build the target time today
+	struct tm target_tm = now_tm;
+	target_tm.tm_hour = s_setter_time.HourSet;
+	target_tm.tm_min = s_setter_time.MinuteSet;
+	target_tm.tm_sec = 0;
+
+	time_t now = mktime(&now_tm);
+	time_t target = mktime(&target_tm);
+
+	if (target <= now) {
+		target += SECONDS_PER_DAY;
+	}
+
+	int32_t diff = (int32_t)(target - now);
+
+	uint8_t hours = diff / 3600;
+	uint8_t minutes = (diff % 3600) / 60;
+	uint8_t seconds = diff % 60;
+
+	static char s_countdown_buffer[9];
+	snprintf(s_countdown_buffer, sizeof(s_countdown_buffer),
+	         "%02d:%02d:%02d", hours, minutes, seconds);
+	text_layer_set_text(s_countdown_txt_layer, s_countdown_buffer);
+}
+
+static void update_setter_display() {
+	static char s_setter_buffer[8];
+	snprintf(s_setter_buffer, sizeof(s_setter_buffer), "%02d:%02d", s_setter_time.HourWIP, s_setter_time.MinuteWIP);
+	text_layer_set_text(s_setter_txt_layer, s_setter_buffer);
+}
+
+static void up_click_handler(void *recognizer, void *ctx) {
+	switch (s_highlight_pos) {
+	case 0:
+		if (s_setter_time.HourWIP == 23) {
+			s_setter_time.HourWIP = 0;
+		} else {
+			s_setter_time.HourWIP++;
+		}
+		break;
+	case 1:
+		if (s_setter_time.MinuteWIP == 59) {
+			s_setter_time.MinuteWIP = 0;
+		} else {
+			s_setter_time.MinuteWIP++;
+		}
+		break;
+	default:
+		return;
+	}
+	update_setter_display();
+}
+
+static void down_click_handler(void *recognizer, void *ctx) {
+	switch (s_highlight_pos) {
+	case 0:
+		if (s_setter_time.HourWIP == 0) {
+			s_setter_time.HourWIP = 23;
+		} else {
+			s_setter_time.HourWIP--;
+		}
+		break;
+	case 1:
+		if (s_setter_time.MinuteWIP == 0) {
+			s_setter_time.MinuteWIP = 59;
+		} else {
+			s_setter_time.MinuteWIP--;
+		}
+		break;
+	default:
+		return;
+	}
+	update_setter_display();
+}
+
 static void select_click_handler(void *recognizer, void *ctx) {
 	if (s_highlight_pos == 2) {
+		s_setter_time.HourSet = s_setter_time.HourWIP;
+		s_setter_time.MinuteSet = s_setter_time.MinuteWIP;
+		time_t now = time(NULL);
+		update_countdown_display(localtime(&now), SECOND_UNIT);
 		s_highlight_pos = 0;
 	} else {
 		s_highlight_pos++;
@@ -45,6 +136,8 @@ static void back_click_handler(void *recognizer, void *ctx) {
 }
 
 static void click_config_provider(void *ctx) {
+	window_single_repeating_click_subscribe(BUTTON_ID_UP, 60, up_click_handler);
+	window_single_repeating_click_subscribe(BUTTON_ID_DOWN, 60, down_click_handler);
 	window_single_click_subscribe(BUTTON_ID_SELECT, select_click_handler);
 	window_single_click_subscribe(BUTTON_ID_BACK, back_click_handler);
 }
@@ -75,6 +168,11 @@ static void highlight_layer_update_proc(Layer *layer, GContext *ctx) {
 }
 
 static void setter_window_load() {
+	s_setter_time.HourWIP = 0;
+	s_setter_time.MinuteWIP = 0;
+	s_setter_time.HourSet = 0;
+	s_setter_time.MinuteSet = 0;
+
 	Layer *window_layer = window_get_root_layer(s_window);
 
 	// top&bottom bars
@@ -103,13 +201,13 @@ static void setter_window_load() {
 	layer_add_child(window_layer, bitmap_layer_get_layer(s_check_bmp_layer));
 
 	// remaining time
-	s_remaining_txt_layer = text_layer_create(GRect(PBL_IF_ROUND_ELSE(0, 39), PBL_IF_ROUND_ELSE(37, (top_bar_grect.size.h / 2) - (top_bar_grect.size.h / 3)), PBL_IF_ROUND_ELSE(top_bar_grect.size.w, top_bar_grect.size.w - 39), 32));
+	s_countdown_txt_layer = text_layer_create(GRect(PBL_IF_ROUND_ELSE(0, 39), PBL_IF_ROUND_ELSE(37, (top_bar_grect.size.h / 2) - (top_bar_grect.size.h / 3)), PBL_IF_ROUND_ELSE(top_bar_grect.size.w, top_bar_grect.size.w - 39), 32));
-	text_layer_set_text_alignment(s_remaining_txt_layer, GTextAlignmentCenter);
+	text_layer_set_text_alignment(s_countdown_txt_layer, GTextAlignmentCenter);
-	text_layer_set_text_color(s_remaining_txt_layer, GColorWhite);
+	text_layer_set_text_color(s_countdown_txt_layer, GColorWhite);
-	text_layer_set_background_color(s_remaining_txt_layer, GColorClear);
+	text_layer_set_background_color(s_countdown_txt_layer, GColorClear);
-	text_layer_set_font(s_remaining_txt_layer, fonts_get_system_font(FONT_KEY_LECO_32_BOLD_NUMBERS));
+	text_layer_set_font(s_countdown_txt_layer, fonts_get_system_font(FONT_KEY_LECO_32_BOLD_NUMBERS));
-	text_layer_set_text(s_remaining_txt_layer, "00:00:00");
+	text_layer_set_text(s_countdown_txt_layer, "00:00:00");
-	layer_add_child(window_layer, text_layer_get_layer(s_remaining_txt_layer));
+	layer_add_child(window_layer, text_layer_get_layer(s_countdown_txt_layer));
 
 	// highlighter
 	s_highlight_layer = layer_create(GRect(0, top_bar_grect.size.h, PBL_DISPLAY_WIDTH, PBL_DISPLAY_HEIGHT - (2 * top_bar_grect.size.h)));
@@ -123,12 +221,14 @@ static void setter_window_load() {
 	text_layer_set_font(s_setter_txt_layer, fonts_get_system_font(FONT_KEY_LECO_60_NUMBERS_AM_PM));
 	text_layer_set_text(s_setter_txt_layer, PBL_IF_ROUND_ELSE("00 : 00", "00:00"));
 	layer_add_child(window_layer, text_layer_get_layer(s_setter_txt_layer));
+
+	tick_timer_service_subscribe(SECOND_UNIT, update_countdown_display);
 }
 
 static void setter_window_unload() {
 	layer_destroy(s_highlight_layer);
 	text_layer_destroy(s_setter_txt_layer);
-	text_layer_destroy(s_remaining_txt_layer);
+	text_layer_destroy(s_countdown_txt_layer);
 	bitmap_layer_destroy(s_check_bmp_layer);
 	bitmap_layer_destroy(s_clock_bmp_layer);
 	gbitmap_destroy(s_check_bmp);