consolidate sketches

libraries/KlubhausCore/src/DisplayManager.h

@@ -0,0 +1,24 @@
+#pragma once
+#include "IDisplayDriver.h"
+
+/// Owns a pointer to the concrete driver; all calls delegate.
+/// Board sketch creates the concrete driver and passes it in.
+class DisplayManager {
+public:
+    DisplayManager() : _drv(nullptr) {}
+    explicit DisplayManager(IDisplayDriver* drv) : _drv(drv) {}
+    void setDriver(IDisplayDriver* drv) { _drv = drv; }
+
+    void begin()                            { if (_drv) _drv->begin(); }
+    void setBacklight(bool on)              { if (_drv) _drv->setBacklight(on); }
+    void render(const ScreenState& st)      { if (_drv) _drv->render(st); }
+    TouchEvent readTouch()                  { return _drv ? _drv->readTouch() : TouchEvent{}; }
+    int  dashboardTouch(int x, int y)       { return _drv ? _drv->dashboardTouch(x, y) : -1; }
+    HoldState updateHold(unsigned long ms)  { return _drv ? _drv->updateHold(ms) : HoldState{}; }
+    void updateHint()                       { if (_drv) _drv->updateHint(); }
+    int  width()                            { return _drv ? _drv->width()  : 0; }
+    int  height()                           { return _drv ? _drv->height() : 0; }
+
+private:
+    IDisplayDriver* _drv;
+};