metaforce/Runtime/GuiSys/CRasterFont.hpp

#pragma once

#include <cstring>
#include <memory>
#include <vector>

#include "Runtime/CToken.hpp"
#include "Runtime/GCNTypes.hpp"
#include "Runtime/Streams/IOStreams.hpp"
#include "Runtime/Graphics/CTexture.hpp"

#include <zeus/CVector2i.hpp>

namespace metaforce {
class CDrawStringOptions;
class CTextRenderBuffer;
class IObjectStore;

enum class EColorType { Main, Outline, Geometry, Foreground, Background };

/* NOTE: Is this a good place for CGlyph and CKernPair? */
class CGlyph {
private:
  s16 x0_leftPadding;
  s16 x2_advance;
  s16 x4_rightPadding;
  float x8_startU;
  float xc_startV;
  float x10_endU;
  float x14_endV;
  s16 x18_cellWidth;
  s16 x1a_cellHeight;
  s16 x1c_baseline;
  s16 x1e_kernStart;
  s16 m_layer;

public:
  CGlyph() = default;
  CGlyph(s16 a, s16 b, s32 c, float startU, float startV, float endU, float endV, s16 cellWidth, s16 cellHeight,
         s16 baseline, s16 kernStart, s16 layer = 0)
  : x0_leftPadding(a)
  , x2_advance(b)
  , x4_rightPadding(c)
  , x8_startU(startU)
  , xc_startV(startV)
  , x10_endU(endU)
  , x14_endV(endV)
  , x18_cellWidth(cellWidth)
  , x1a_cellHeight(cellHeight)
  , x1c_baseline(baseline)
  , x1e_kernStart(kernStart)
  , m_layer(layer) {}

  s16 GetLeftPadding() const { return x0_leftPadding; }
  s16 GetAdvance() const { return x2_advance; }
  s16 GetRightPadding() const { return x4_rightPadding; }
  float GetStartU() const { return x8_startU; }
  float GetStartV() const { return xc_startV; }
  float GetEndU() const { return x10_endU; }
  float GetEndV() const { return x14_endV; }
  s16 GetCellWidth() const { return x18_cellWidth; }
  s16 GetCellHeight() const { return x1a_cellHeight; }
  s16 GetBaseline() const { return x1c_baseline; }
  s16 GetKernStart() const { return x1e_kernStart; }
  s16 GetLayer() const { return m_layer; }
};

class CKernPair {
private:
  char16_t x0_first;
  char16_t x2_second;
  s32 x4_howMuch;

public:
  CKernPair() = default;
  CKernPair(char16_t first, char16_t second, s32 howMuch) : x0_first(first), x2_second(second), x4_howMuch(howMuch) {}

  char16_t GetFirst() const { return x0_first; }
  char16_t GetSecond() const { return x2_second; }
  s32 GetHowMuch() const { return x4_howMuch; }
};

class CFontInfo {
  bool x0_ = false;
  bool x1_ = false;
  s32 x4_ = 0;
  s32 x8_fontSize = 0;
  char xc_name[64] = "";

public:
  CFontInfo() = default;
  CFontInfo(bool a, bool b, s32 c, s32 fontSize, const char* name) : x0_(a), x1_(b), x4_(c), x8_fontSize(fontSize) {
    std::strcpy(xc_name, name);
  }
};

class CRasterFont {
  bool x0_initialized = false;
  s32 x4_monoWidth = 16;
  s32 x8_monoHeight = 16;
  std::vector<std::pair<char16_t, CGlyph>> xc_glyphs;
  std::vector<CKernPair> x1c_kerning;
  CTexture::EFontType x2c_mode = CTexture::EFontType::OneLayer;
  CFontInfo x30_fontInfo;
  TLockedToken<CTexture> x80_texture;
  s32 x8c_baseline;
  s32 x90_lineMargin = 0;

  const CGlyph* InternalGetGlyph(char16_t chr) const;

public:
  CRasterFont(CInputStream& in, IObjectStore& store);

  s32 GetMonoWidth() const { return x4_monoWidth; }
  s32 GetMonoHeight() const { return x8_monoHeight; }
  EColorType GetMode() const {
    switch (x2c_mode) {
    case CTexture::EFontType::OneLayer:
    case CTexture::EFontType::TwoLayers:
    case CTexture::EFontType::FourLayers:
      return EColorType::Main;
    case CTexture::EFontType::OneLayerOutline:
    case CTexture::EFontType::TwoLayersOutlines:
    case CTexture::EFontType::TwoLayersOutlines2:
      return EColorType::Outline;
    default:
      return EColorType::Main;
    }
  }
  s32 GetLineMargin() const { return x90_lineMargin; }
  s32 GetCarriageAdvance() const { return GetLineMargin() + GetMonoHeight(); }

  s32 GetBaseline() const { return x8c_baseline; }
  static s32 KernLookup(const std::vector<CKernPair>& kernTable, s32 kernStart, char16_t chr) {
    auto iter = kernTable.cbegin() + kernStart;
    for (; iter != kernTable.cend() && iter->GetFirst() == kernTable[kernStart].GetFirst(); ++iter) {
      if (iter->GetSecond() == chr)
        return iter->GetHowMuch();
    }

    return 0;
  }

  void SinglePassDrawString(const CDrawStringOptions&, int x, int y, int& xout, int& yout, CTextRenderBuffer* renderBuf,
                            const char16_t* str, s32 len) const;
  void DrawSpace(const CDrawStringOptions& opts, int x, int y, int& xout, int& yout, int len) const;
  void DrawString(const CDrawStringOptions& opts, int x, int y, int& xout, int& yout, CTextRenderBuffer* renderBuf,
                  const char16_t* str, int len) const;
  const CGlyph* GetGlyph(char16_t chr) const { return InternalGetGlyph(chr); }
  void GetSize(const CDrawStringOptions& opts, int& width, int& height, const char16_t* str, int len) const;
  CTexture& GetTexture() { return *x80_texture; }

  bool IsFinishedLoading() const;
};

std::unique_ptr<IObj> FRasterFontFactory(const SObjectTag& tag, CInputStream& in, const CVParamTransfer& vparms,
                                         CObjectReference* selfRef);
} // namespace metaforce