Refactoring: created Display class.

src/Display.h

@@ -0,0 +1,40 @@
+#ifndef DISPLAY_h_included
+#define DISPLAY_h_included
+
+#include <Arduino.h>
+#include "Clock.h"
+
+class Display {
+public:
+  Display(Clock *real, Clock *model):
+    last_reinit_ts(0),
+    realTime(real),
+    modelTime(model),
+    displayClockNameEvery_ms(16000),
+    clockNameDurationTime_ms(1200),
+    doNotShowClockNameBeforeAndAfterMinuteChange_s(2),
+    displayRefresh_ms(200)
+  {
+    showRealTime();
+  };
+  void begin();
+  void loop();
+  void loopEyeAnimation();
+  void reInitializeDisplay();
+  void showRealTime() { showRealTimeFlag=true; currentTime = realTime; };
+  void showModelTime() { showRealTimeFlag=false; currentTime = modelTime; };
+  void setClockNameDurationTime_ms(unsigned long val) { clockNameDurationTime_ms=val; };
+  void setClockNameDisplayEvery_ms(unsigned long val) { displayClockNameEvery_ms=val; };
+  void print(const char *s);
+  void print(const String s);
+protected:
+  unsigned long last_reinit_ts;
+  Clock *realTime, *modelTime, *currentTime;
+  boolean showRealTimeFlag;
+  unsigned long displayClockNameEvery_ms;
+  unsigned long clockNameDurationTime_ms;
+  unsigned int doNotShowClockNameBeforeAndAfterMinuteChange_s;
+  unsigned long displayRefresh_ms;
+};
+
+#endif