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// Copyright 2017 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_FXGE_DIB_CFX_IMAGESTRETCHER_H_
#define CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_
#include <memory>
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_memory.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
#include "core/fxge/dib/ifx_scanlinecomposer.h"
#include "core/fxge/fx_dib.h"
class CFX_DIBSource;
class IFX_PauseIndicator;
class CFX_ImageStretcher {
public:
CFX_ImageStretcher(IFX_ScanlineComposer* pDest,
const RetainPtr<CFX_DIBSource>& pSource,
int dest_width,
int dest_height,
const FX_RECT& bitmap_rect,
uint32_t flags);
~CFX_ImageStretcher();
bool Start();
bool Continue(IFX_PauseIndicator* pPause);
RetainPtr<CFX_DIBSource> source() { return m_pSource; }
private:
bool StartQuickStretch();
bool StartStretch();
bool ContinueQuickStretch(IFX_PauseIndicator* pPause);
bool ContinueStretch(IFX_PauseIndicator* pPause);
UnownedPtr<IFX_ScanlineComposer> const m_pDest;
RetainPtr<CFX_DIBSource> m_pSource;
std::unique_ptr<CStretchEngine> m_pStretchEngine;
std::unique_ptr<uint8_t, FxFreeDeleter> m_pScanline;
std::unique_ptr<uint8_t, FxFreeDeleter> m_pMaskScanline;
const uint32_t m_Flags;
bool m_bFlipX;
bool m_bFlipY;
int m_DestWidth;
int m_DestHeight;
FX_RECT m_ClipRect;
const FXDIB_Format m_DestFormat;
const int m_DestBPP;
int m_LineIndex;
};
#endif // CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_
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