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// 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_FPDF_RENDER_CPDF_PAGERENDERCACHE_H_
#define CORE_FPDFAPI_FPDF_RENDER_CPDF_PAGERENDERCACHE_H_
#include <map>
#include "core/fxcrt/include/fx_system.h"
class CPDF_Stream;
class CPDF_ImageCacheEntry;
class CPDF_Page;
class CPDF_RenderStatus;
class CFX_DIBitmap;
class CFX_DIBSource;
class IFX_Pause;
class CPDF_PageRenderCache {
public:
explicit CPDF_PageRenderCache(CPDF_Page* pPage)
: m_pPage(pPage),
m_pCurImageCacheEntry(nullptr),
m_nTimeCount(0),
m_nCacheSize(0),
m_bCurFindCache(FALSE) {}
~CPDF_PageRenderCache();
void ClearImageData();
FX_DWORD EstimateSize();
void CacheOptimization(int32_t dwLimitCacheSize);
FX_DWORD GetTimeCount() const { return m_nTimeCount; }
void SetTimeCount(FX_DWORD dwTimeCount) { m_nTimeCount = dwTimeCount; }
void GetCachedBitmap(CPDF_Stream* pStream,
CFX_DIBSource*& pBitmap,
CFX_DIBSource*& pMask,
FX_DWORD& MatteColor,
FX_BOOL bStdCS = FALSE,
FX_DWORD GroupFamily = 0,
FX_BOOL bLoadMask = FALSE,
CPDF_RenderStatus* pRenderStatus = NULL,
int32_t downsampleWidth = 0,
int32_t downsampleHeight = 0);
void ResetBitmap(CPDF_Stream* pStream, const CFX_DIBitmap* pBitmap);
void ClearImageCacheEntry(CPDF_Stream* pStream);
CPDF_Page* GetPage() const { return m_pPage; }
CPDF_ImageCacheEntry* GetCurImageCacheEntry() const {
return m_pCurImageCacheEntry;
}
FX_BOOL StartGetCachedBitmap(CPDF_Stream* pStream,
FX_BOOL bStdCS = FALSE,
FX_DWORD GroupFamily = 0,
FX_BOOL bLoadMask = FALSE,
CPDF_RenderStatus* pRenderStatus = NULL,
int32_t downsampleWidth = 0,
int32_t downsampleHeight = 0);
FX_BOOL Continue(IFX_Pause* pPause);
protected:
friend class CPDF_Page;
CPDF_Page* const m_pPage;
CPDF_ImageCacheEntry* m_pCurImageCacheEntry;
std::map<CPDF_Stream*, CPDF_ImageCacheEntry*> m_ImageCache;
FX_DWORD m_nTimeCount;
FX_DWORD m_nCacheSize;
FX_BOOL m_bCurFindCache;
};
#endif // CORE_FPDFAPI_FPDF_RENDER_CPDF_PAGERENDERCACHE_H_
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