cpdf_type3cache.h

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// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
#ifndef CORE_FPDFAPI_RENDER_CPDF_TYPE3CACHE_H_
#define CORE_FPDFAPI_RENDER_CPDF_TYPE3CACHE_H_
 
#include <stdint.h>
 
#include <map>
#include <memory>
#include <tuple>
 
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/observed_ptr.h"
#include "core/fxcrt/retain_ptr.h"
 
class CFX_GlyphBitmap;
class CFX_Matrix;
class CPDF_Type3Font;
class CPDF_Type3GlyphMap;
 
class CPDF_Type3Cache final : public Retainable, public Observable {
 public:
  CONSTRUCT_VIA_MAKE_RETAIN;
 
  const CFX_GlyphBitmap* LoadGlyph(uint32_t charcode,
                                   const CFX_Matrix& mtMatrix);
 
 private:
  using SizeKey = std::tuple<int, int, int, int>;
 
  explicit CPDF_Type3Cache(CPDF_Type3Font* pFont);
  ~CPDF_Type3Cache() override;
 
  std::unique_ptr<CFX_GlyphBitmap> RenderGlyph(CPDF_Type3GlyphMap* pSize,
                                               uint32_t charcode,
                                               const CFX_Matrix& mtMatrix);
 
  RetainPtr<CPDF_Type3Font> const m_pFont;
  std::map<SizeKey, std::unique_ptr<CPDF_Type3GlyphMap>> m_SizeMap;
};
 
#endif  // CORE_FPDFAPI_RENDER_CPDF_TYPE3CACHE_H_