Status bar displays time in 12 or 24 hour format based on settings

src/components/datetime/DateTimeController.cpp

@@ -11,6 +11,9 @@ namespace {
   char const* MonthsStringLow[] = {"--", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
 }
 
+DateTime::DateTime(Controllers::Settings& settingsController) : settingsController {settingsController} {
+}
+
 void DateTime::SetCurrentTime(std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> t) {
   this->currentDateTime = t;
   UpdateTime(previousSystickCounter); // Update internal state without updating the time
@@ -101,3 +104,23 @@ void DateTime::Register(Pinetime::System::SystemTask* systemTask) {
   this->systemTask = systemTask;
 }
 
+using ClockType = Pinetime::Controllers::Settings::ClockType;
+std::string DateTime::FormattedTime() {
+  // Return time as a string in 12- or 24-hour format
+  char buff[9];
+  if (settingsController.GetClockType() == ClockType::H12) {
+      uint8_t hour12;
+      const char* amPmStr;
+      if (hour < 12) {
+        hour12 = (hour == 0) ? 12 : hour;
+        amPmStr = "AM";
+      } else {
+        hour12 = (hour == 12) ? 12 : hour - 12;
+        amPmStr = "PM";
+      }
+      sprintf(buff, "%i:%02i %s", hour12, minute, amPmStr);
+  } else {
+    sprintf(buff, "%02i:%02i", hour, minute);
+  }
+  return std::string(buff);
+} 

src/components/datetime/DateTimeController.h

@@ -2,6 +2,8 @@
 
 #include <cstdint>
 #include <chrono>
+#include <string>
+#include "components/settings/Settings.h"
 
 namespace Pinetime {
   namespace System {
@@ -10,6 +12,7 @@ namespace Pinetime {
   namespace Controllers {
     class DateTime {
     public:
+      DateTime(Controllers::Settings& settingsController);
       enum class Days : uint8_t { Unknown, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday };
       enum class Months : uint8_t {
         Unknown,
@@ -71,6 +74,7 @@ namespace Pinetime {
 
       void Register(System::SystemTask* systemTask);
       void SetCurrentTime(std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> t);
+      std::string FormattedTime();
 
     private:
       uint16_t year = 0;
@@ -87,6 +91,7 @@ namespace Pinetime {
 
       bool isMidnightAlreadyNotified = false;
       System::SystemTask* systemTask = nullptr;
+      Controllers::Settings& settingsController;
     };
   }
 }

src/components/settings/Settings.h

@@ -1,7 +1,6 @@
 #pragma once
 #include <cstdint>
 #include <bitset>
-#include "components/datetime/DateTimeController.h"
 #include "components/brightness/BrightnessController.h"
 #include "components/fs/FS.h"
 #include "drivers/Cst816s.h"