#include <iostream.h>

class VideoText { 
private: 
	int page_num;
    struct pageInfo { 
        unsigned int x, // cursor x coordinate 
            y, // cursor y coordinate 
            segment_addr, // video buf segment 
            base_offset; // offset w/in video buf 
        unsigned char previous_active_page, // prev active video page # 
            active_page, // current active video page # 
            previous_video_mode, // prev video mode 
            video_mode; // current video mode 
        unsigned int bytes_per_char, // video buf bytes per char 
            chars_per_row, // video buf chars per row 
            rows_per_screen; // video buf rows per screen 
        unsigned char attribute; // current active attribute 
        unsigned int *previous_buffer, // ptr to prev video buf 
            // before VideoText 
            *buffer; // ptr to current 
        // VideoText buffer 
    }; 

    struct pageInfo page; 

    void Array2Page // load VideoText buffer 
        ( unsigned int *buffer ); // to video buf 

    void Page2Array // load video buf to 
        ( unsigned int *buffer ); // VideoText buffer 

    unsigned int GetOffset // Calculate video buf offset 
        ( unsigned int x, unsigned int y ); // for (x,y) pair 

    void PopPage( void ); // restore prev video state 

    void PushPage( void ); // store prev video state 

    int peek(unsigned segment, unsigned offset); 

    void poke(unsigned segment, unsigned offset, int value); 

public: 
	VideoText() {}
    VideoText( int page_num ) // constructor 
	{
		page_num = page_num;
	}

    ~VideoText( ) {}; // destructor 

    unsigned char GetAttribute( void ); // Retrieve current attributes 

    void SetAttribute // Set current attributes 
        ( unsigned char attribute ); 

    void GoToXY( int x, int y ); // move current video buf 
    // cursor location to (x,y) 

    void WriteChar( unsigned char ch ); // Write one char at video 
    // buf cursor location (x,y) 
    // using current attributes 

    void WriteString // Write str at video 
        ( unsigned char * str ); // buf cursor location (x,y) 
    // using current attributes 

    void ClearScreen( void ); // clear entire video buf 

    void DrawLine( int x1, int y1, // Draw line to video buf 
        int x2, int y2 ) // from (x1,y1) to (x2,y2) 
	{
		cout << "**********" << endl;
		cout << "Made It~!!" << endl;
		cout << "**********" << endl;
	}

    void DrawBox( int x1, int y1, // Draw box to video buf 
        int x2, int y2 ); // (x1,y1) top left corner 
    // (x2,y2) bottom right corner 

    void ShowPage( void ); // Writes current VideoText 
    // buffer contents to video 
    // buf 

    void HidePage( void ); // Writes video buf 
    // contents to current 
    // VideoText buffer and then 
    // clears entire video buf 

    // Here are the text character attributes 
    enum attributes { 
        fgBlack = 0x00, // Foreground attributes 
            fgBlue = 0x01, 
            fgGreen = 0x02, 
            fgRed = 0x04, 
            fgWhite = 0x07, 
            fgIntense = 0x08, 
            bgBlack = 0x00, // Background attributes 
            bgBlue = 0x10, 
            bgGreen = 0x20, 
            bgRed = 0x40, 
            bgWhite = 0x70, 
            Blinking = 0x80}; 
};

extern VideoText *VideoTest;