viewer.h

#ifndef CMU462_VIEWER_H
#define CMU462_VIEWER_H

#include "renderer.h"
#include "osdtext.h"

#include <chrono>

#include "glfw.h"

namespace CMU462 {

class Viewer {
 public:

  Viewer( void );

  Viewer( const char* title );

  ~Viewer( void );

  void init( void );
  
  void start( void );

  void set_renderer( Renderer *renderer );

 private:

  static void update( void );
    
  static void drawInfo( void );

  // window event callbacks
  static void err_callback( int error, const char* description );
  static void key_callback( GLFWwindow* window, int key, int scancode, int action, int mods );
  static void resize_callback( GLFWwindow* window, int width, int height );
  static void cursor_callback( GLFWwindow* window, double xpos, double ypos );
  static void scroll_callback( GLFWwindow* window, double xoffset, double yoffset);

  // HDPI display
  static bool HDPI;

  // framerate related timeers
  static int framecount; 
  static std::chrono::time_point<std::chrono::system_clock> sys_last; 
  static std::chrono::time_point<std::chrono::system_clock> sys_curr; 

  // info toggle
  static bool showInfo;

  // window properties
  static GLFWwindow* window;
  static size_t buffer_w;
  static size_t buffer_h;

  // user space renderer
  static Renderer* renderer; 

  // on-screen display
  static OSDText* osd_text;
  static int line_id_renderer;
  static int line_id_framerate;


}; // class Viewer

} // namespace CMU462

#endif // CMU462_VIEWER_H