TypeCase.h

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// TypeCase.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 <SDL2/SDL.h>

#include "Color.h"

#include "UiFont.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 {

class TypeCase;
class TypeLine;

class GlyphEntry
{
public:
    GlyphEntry() : cp(0), advance(0), page(0) { }

public:
    bool IsInitialized() const { return cp > 0; }

public:
    MR_UInt32 cp;  
    int advance;  
    unsigned int page;  
    SDL_Rect srcRect;  
};

class MR_DllDeclare TypeCase
{
public:
    TypeCase(const UiFont &font, int width, int height) :
        font(font), width(width), height(height) { }
    TypeCase(const TypeCase&) = delete;

    virtual ~TypeCase() { }

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

public:
    int GetWidth() const { return width; }

    int GetHeight() const { return height; }

    virtual MR_UInt32 CountTextures() const = 0;

public:
    virtual void Prepare(const std::string &s, TypeLine *rects = nullptr) = 0;

    virtual void Render(const TypeLine &s, const Color color, int x, int y,
        boost::optional<size_t> caret = {}) = 0;

    virtual void RenderTexture(MR_UInt32 idx, int x, int y,
        double scale = 1.0) = 0;

protected:
    const UiFont font;
    const int width;
    const int height;
};

class MR_DllDeclare TypeLine
{
public:
    TypeLine() : width(0), height(0) { }

public:
    bool IsPrepared() const {
        return static_cast<bool>(typeCase);
    }

    void Render(const Color color, int x, int y,
        boost::optional<size_t> caret = {})
    {
        if (typeCase) {
            typeCase->Render(*this, color, x, y, caret);
        }
    }

public:
    std::shared_ptr<TypeCase> typeCase;  // Owning TypeCase, for sanity checking.
    std::vector<std::pair<GlyphEntry*, SDL_Rect>> glyphs;
    int width;
    int height;
};

}  // namespace Display
}  // namespace HoverRace

#undef MR_DllDeclare