OO redesign

lib/DisplayProxy/DisplayProxy.h

@@ -0,0 +1,10 @@
+#ifndef DISPLAYPROXY_H
+#define DISPLAYPROXY_H
+class DisplayProxy
+{
+public:
+    virtual bool write(int x, int y, const char *text) = 0;
+    virtual bool clear() = 0;
+    virtual bool setOffset(int x, int y) = 0;
+};
+#endif

lib/DisplayProxy/DisplayProxyMAX7456.cpp

@@ -0,0 +1,24 @@
+#include "DisplayProxyMAX7456.h"
+
+DisplayProxyMAX7456::DisplayProxyMAX7456(Max7456 *osd)
+{
+    this->osd = osd;
+}
+
+bool DisplayProxyMAX7456::write(int x, int y, const char *text)
+{
+    this->osd->print(text, x, y);
+    return true;
+}
+
+bool DisplayProxyMAX7456::clear()
+{
+    this->osd->clearScreen();
+    return true;
+}
+
+bool DisplayProxyMAX7456::setOffset(int x, int y)
+{
+    this->osd->setDisplayOffsets(x, y);
+    return true;
+}

lib/DisplayProxy/DisplayProxyMAX7456.h

@@ -0,0 +1,19 @@
+#ifndef DISPLAYPROXYMAX7456_H
+#define DISPLAYPROXYMAX7456_H
+
+#include "DisplayProxy.h"
+#include "max7456.h"
+
+class DisplayProxyMAX7456 : public DisplayProxy
+{
+public:
+    DisplayProxyMAX7456(Max7456 *osd);
+
+    bool write(int x, int y, const char *text);
+    bool clear() ;
+    bool setOffset(int x, int y);
+private:
+    Max7456 *osd;
+};
+
+#endif