{

private:

FourView *m_fourView;

ThreeView *m_threeView;

SingleView *m_singleView;

TwoView *m_twoView;

SplitedView *m_currentView;

UILayer *m_uiLayer;

bool m_isSelectionMode;

bool m_isAxisMode;

bool m_isAltMode;

bool m_isCtrlMode;

bool m_isExtrude;

int m_width;

int m_height;

public:

OpenGLBackend *m_graphicsBackend;

Screen();

void updateScreenSize(unsigned int width, unsigned int height);

void onPaint();

void screenShot(const char *fileName);

void initialize();

void disableReference();

void getViewportImage(GLuint &textID, std::string &path, Vector &position, unsigned int &width, unsigned int &height);

void setViewportImage(const char *path, GLuint imageID, Vector &position, unsigned int width, unsigned int height);

void onCtrlDown();

void onCtrlUp();

void onAltDown();

void onAltUp();

bool onLeftDrag(int x,int y);

bool onMiddleDrag(int x,int y);

bool onMiddleRelease(bool isAppend);

bool onLeftPress(int x,int y);

bool onMoving(int x,int y);

void onExtrudePress();

void onExtrudeRelease();

bool onLeftRelease(bool isAppend);

bool onMiddlePress(int x,int y);

bool onWheel(float step,int x,int y);

void toggleGrid();

void toolButtonSingleView();

void toolButtonTwoView();

void toolButtonThreeView();

void toolButtonFourView();

void changeView(int type);

void changeCamera(CameraMode::__Enum type);

private:

void toolButtonSmooth();

void toolButtonFaced();

void toolButtonWireframe();

void toolButtonWire();

void toolButtonWireframeFaced();

public:

~Screen(void);

static Screen *screen;