glyph_interface.h

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// Based on "Design Patterns: Elements of Reusable Object-Oriented Software"
// book by Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm 
//
// Created by Bartosz Rachwal. The National Institute of Advanced Industrial Science and Technology, Japan.

#ifndef STRUCTURAL_FLYWEIGHT_GLYPH_INTERFACE_H_
#define STRUCTURAL_FLYWEIGHT_GLYPH_INTERFACE_H_

#include "window.h"
#include "glyph_context.h"
#include "font.h"

namespace structural
{
namespace flyweight
{
class GlyphInterface
{
    public:
    virtual ~GlyphInterface() { };

    virtual void Draw(Window*, GlyphContext&) = 0;

    virtual void First(GlyphContext&) = 0;
    virtual void Next(GlyphContext&) = 0;
    virtual bool IsDone(GlyphContext&) = 0;

    virtual void SetFont(Font*, GlyphContext&) = 0;
    virtual Font *GetFont(GlyphContext&) = 0;

    virtual GlyphInterface *Current(GlyphContext&) = 0;

    virtual void Insert(GlyphInterface*, GlyphContext&) = 0;
    virtual void Remove(GlyphContext&) = 0;
};
}
}

#endif