Spectre/Window/Window: refactor out GLContext specific code to its own class (GLWindow)

include/Spectre/Window/GLWindow.h

@@ -0,0 +1,41 @@
+
+#ifndef SPECTRE_WINDOW_GLWINDOW_H
+#define SPECTRE_WINDOW_GLWINDOW_H
+
+#include <Spectre/Window/Window.h>
+#include <Spectre/Window/GLContext.h>
+
+namespace sp {
+
+class GLContext;
+
+// GLWindow represents a window that has an OpenGL context attached to it.
+class GLWindow : public Window
+{
+public:
+	GLWindow();
+	virtual ~GLWindow();
+
+	virtual bool create(WindowDescription decription);
+
+	virtual void destroy();
+
+	bool activate(bool value);
+
+	// Enable/Disable Vertical Sync.
+	bool enableVSync(bool value);
+
+	void swapBuffers();
+
+protected:
+
+	virtual void onReshape(int width, int height);
+
+private:
+
+	GLContext*	m_context;
+};
+
+} // namepsace sp
+
+#endif /* SPECTRE_WINDOW_GLWINDOW_H */