core/fpdfapi/render/cpdf_docrenderdata.h

// Copyright 2016 PDFium Authors. All rights reserved.
// 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_DOCRENDERDATA_H_
#define CORE_FPDFAPI_RENDER_CPDF_DOCRENDERDATA_H_

#include <map>

#include "core/fpdfapi/page/cpdf_countedobject.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"

class CPDF_Document;
class CPDF_Font;
class CPDF_Object;
class CPDF_TransferFunc;
class CPDF_Type3Cache;
class CPDF_Type3Font;

class CPDF_DocRenderData {
 public:
  explicit CPDF_DocRenderData(CPDF_Document* pPDFDoc);
  ~CPDF_DocRenderData();

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

  RetainPtr<CPDF_Type3Cache> GetCachedType3(CPDF_Type3Font* pFont);
  void MaybePurgeCachedType3(CPDF_Type3Font* pFont);

  RetainPtr<CPDF_TransferFunc> GetTransferFunc(const CPDF_Object* pObj);
  void MaybePurgeTransferFunc(const CPDF_Object* pObj);

 protected:
  // protected for use by test subclasses.
  RetainPtr<CPDF_TransferFunc> CreateTransferFunc(
      const CPDF_Object* pObj) const;

 private:
  UnownedPtr<CPDF_Document> const m_pPDFDoc;
  std::map<CPDF_Font*, RetainPtr<CPDF_Type3Cache>> m_Type3FaceMap;
  std::map<const CPDF_Object*, RetainPtr<CPDF_TransferFunc>> m_TransferFuncMap;
};

#endif  // CORE_FPDFAPI_RENDER_CPDF_DOCRENDERDATA_H_