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DasherScreen.h

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// DasherScreen.h
//
//
// Copyright (c) 2001-2002 David Ward
//

#ifndef __DasherScreen_h_
#define __DasherScreen_h_

#include "DasherWidgetInterface.h"
#include "DasherTypes.h"

namespace Dasher {class CDasherScreen;}
class Dasher::CDasherScreen
{
public:
        CDasherScreen(int width,int height)
                : m_iWidth(width), m_iHeight(height) {}
        
        virtual void SetInterface(CDasherWidgetInterface* DasherInterface) {m_DasherInterface = DasherInterface;}
        
        int GetWidth() const { return m_iWidth; }

        int GetHeight() const { return m_iHeight; }

        typedef struct tagpoint { int x; int y; } point;

        virtual void SetFont(std::string Name)=0;

        virtual void SetFontSize(Dasher::Opts::FontSize fontsize)=0;
        
        virtual Dasher::Opts::FontSize GetFontSize()=0;

        // DasherView asks for the width and height of the given symbol at a requested height,
        // then it is able to sensibly specify the upper left corner in DrawText.
        virtual void TextSize(symbol Character, int* Width, int* Height, int Size) const=0;
        virtual void DrawText(symbol Character, int x1, int y1, int Size) const=0;

        
        // Draw a filled rectangle - given position and color id
        //
        virtual void DrawRectangle(int x1, int y1, int x2, int y2, int Color, Opts::ColorSchemes ColorScheme) const=0;
        
        // Draw a line of fixed colour (usually black). Intended for static UI elements such as a cross-hair
        //
        virtual void Polyline(point* Points, int Number) const=0;
        
        // Draw a filled polygon - given vertices and color id
        // This is not (currently) used in standard Dasher. However, it could be very
        // useful in the future. Please implement unless it will be very difficult,
        // in which case make this function call Polyline.
        //
        virtual void DrawPolygon(point* Points, int Number, int Color, Opts::ColorSchemes ColorScheme) const=0;
        
        // Signal the screen when a frame is started and finished
        virtual void Blank() const=0;

        virtual void Display()=0;

protected:
        const int m_iWidth, m_iHeight;

        CDasherWidgetInterface* m_DasherInterface;
};


#endif /* #ifndef __DasherScreen_h_ */

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