1 // Copyright 2017 The PDFium Authors 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/retain_ptr.h" 14 #include "core/fxcrt/unowned_ptr.h" 15 #include "core/fxge/dib/fx_dib.h" 16 #include "core/fxge/dib/scanlinecomposer_iface.h" 17 18 class CFX_DIBBase; 19 class CStretchEngine; 20 class PauseIndicatorIface; 21 22 class CFX_ImageStretcher { 23 public: 24 CFX_ImageStretcher(ScanlineComposerIface* pDest, 25 const RetainPtr<const CFX_DIBBase>& pSource, 26 int dest_width, 27 int dest_height, 28 const FX_RECT& bitmap_rect, 29 const FXDIB_ResampleOptions& options); 30 ~CFX_ImageStretcher(); 31 32 bool Start(); 33 bool Continue(PauseIndicatorIface* pPause); 34 35 RetainPtr<const CFX_DIBBase> source(); 36 37 private: 38 bool StartStretch(); 39 bool ContinueStretch(PauseIndicatorIface* pPause); 40 41 UnownedPtr<ScanlineComposerIface> const m_pDest; 42 RetainPtr<const CFX_DIBBase> const m_pSource; 43 std::unique_ptr<CStretchEngine> m_pStretchEngine; 44 const FXDIB_ResampleOptions m_ResampleOptions; 45 const int m_DestWidth; 46 const int m_DestHeight; 47 const FX_RECT m_ClipRect; 48 const FXDIB_Format m_DestFormat; 49 }; 50 51 #endif // CORE_FXGE_DIB_CFX_IMAGESTRETCHER_H_ 52