SdlTypeCase.h

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// SdlTypeCase.h
//
// Copyright (c) 2015 Michael Imamura.
//
// Licensed under GrokkSoft HoverRace SourceCode License v1.0(the "License");
// you may not use this file except in compliance with the License.
//
// A copy of the license should have been attached to the package from which
// you have taken this file. If you can not find the license you can not use
// this file.
//
//
// The author makes no representations about the suitability of
// this software for any purpose.  It is provided "as is" "AS IS",
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied.
//
// See the License for the specific language governing permissions
// and limitations under the License.

#pragma once

#include "../TypeCase.h"

#if defined(_WIN32) && defined(HR_ENGINE_SHARED)
#   ifdef MR_ENGINE
#       define MR_DllDeclare   __declspec( dllexport )
#   else
#       define MR_DllDeclare   __declspec( dllimport )
#   endif
#else
#   define MR_DllDeclare
#endif

namespace HoverRace {
    namespace Display {
        namespace SDL {
            class SdlDisplay;
            class SdlDynamicTexture;
        }
    }
}

namespace HoverRace {
namespace Display {
namespace SDL {

class MR_DllDeclare SdlTypeCase :
    public TypeCase,
    public std::enable_shared_from_this<SdlTypeCase>
{
    using SUPER = TypeCase;

public:
    SdlTypeCase(SdlDisplay &display, const UiFont &font, int width, int height);
    SdlTypeCase(const SdlTypeCase&) = delete;
    virtual ~SdlTypeCase();

    SdlTypeCase &operator=(const SdlTypeCase&) = delete;

public:
    MR_UInt32 CountTextures() const override;

private:
    GlyphEntry &AddGlyph(GlyphEntry &ent, const std::string &s,
        MR_UInt32 cp, std::string &added);
    GlyphEntry &FindGlyph(const std::string &s, MR_UInt32 cp,
        std::string &added);

public:
    void Prepare(const std::string &s, TypeLine *rects = nullptr) override;
    void Render(const TypeLine &s, const Color color, int x, int y,
        boost::optional<size_t> caret = {}) override;
    void RenderTexture(MR_UInt32 idx, int x, int y,
        double scale = 1.0) override;

protected:
    SdlDisplay &display;
private:
    struct Metrics
    {
        Metrics(SdlDisplay &display, const UiFont &font);

        int fontHeight;  
        int lineHeight;  
        int spaceWidth;  
    } metrics;
    using glyphPage_t = std::array<GlyphEntry, 256>;
    std::array<std::unique_ptr<glyphPage_t>, 256> glyphs;
    std::vector<std::unique_ptr<SdlDynamicTexture>> maps;
    MR_UInt32 curMap;
    int curX, curY;
};

}  // namespace SDL
}  // namespace Display
}  // namespace HoverRace

#undef MR_DllDeclare