1 // Copyright 2017 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_ 8 #define CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_ 9 10 #include <memory> 11 12 #include "core/fxcrt/fx_coordinates.h" 13 #include "core/fxcrt/fx_memory_wrappers.h" 14 #include "core/fxcrt/retain_ptr.h" 15 #include "core/fxcrt/unowned_ptr.h" 16 #include "core/fxge/dib/scanlinecomposer_iface.h" 17 #include "core/fxge/fx_dib.h" 18 19 class CFX_DIBBase; 20 class CStretchEngine; 21 class PauseIndicatorIface; 22 23 class CFX_ImageStretcher { 24 public: 25 CFX_ImageStretcher(ScanlineComposerIface* pDest, 26 const RetainPtr<CFX_DIBBase>& pSource, 27 int dest_width, 28 int dest_height, 29 const FX_RECT& bitmap_rect, 30 const FXDIB_ResampleOptions& options); 31 ~CFX_ImageStretcher(); 32 33 bool Start(); 34 bool Continue(PauseIndicatorIface* pPause); 35 36 RetainPtr<CFX_DIBBase> source(); 37 38 private: 39 bool StartStretch(); 40 bool ContinueStretch(PauseIndicatorIface* pPause); 41 42 UnownedPtr<ScanlineComposerIface> const m_pDest; 43 RetainPtr<CFX_DIBBase> m_pSource; 44 std::unique_ptr<CStretchEngine> m_pStretchEngine; 45 std::unique_ptr<uint8_t, FxFreeDeleter> m_pScanline; 46 std::unique_ptr<uint8_t, FxFreeDeleter> m_pMaskScanline; 47 const FXDIB_ResampleOptions m_ResampleOptions; 48 int m_DestWidth; 49 int m_DestHeight; 50 const FX_RECT m_ClipRect; 51 const FXDIB_Format m_DestFormat; 52 const int m_DestBPP; 53 }; 54 55 #endif // CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_ 56