| // 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_IMAGETRANSFORMER_H_ |
| #define CORE_FXGE_DIB_CFX_IMAGETRANSFORMER_H_ |
| |
| #include <memory> |
| |
| #include "core/fxcrt/fx_coordinates.h" |
| #include "core/fxcrt/retain_ptr.h" |
| #include "core/fxge/dib/cfx_bitmapstorer.h" |
| |
| class CFX_DIBBase; |
| class CFX_DIBitmap; |
| class CFX_ImageStretcher; |
| class PauseIndicatorIface; |
| |
| class CFX_ImageTransformer { |
| public: |
| struct BilinearData { |
| int res_x; |
| int res_y; |
| int src_col_l; |
| int src_row_l; |
| int src_col_r; |
| int src_row_r; |
| int row_offset_l; |
| int row_offset_r; |
| }; |
| |
| struct BicubicData { |
| int res_x; |
| int res_y; |
| int src_col_l; |
| int src_row_l; |
| int src_col_r; |
| int src_row_r; |
| int pos_pixel[8]; |
| int u_w[4]; |
| int v_w[4]; |
| }; |
| |
| struct DownSampleData { |
| int src_col; |
| int src_row; |
| }; |
| |
| struct CalcData { |
| CFX_DIBitmap* bitmap; |
| const CFX_Matrix& matrix; |
| const uint8_t* buf; |
| uint32_t pitch; |
| }; |
| |
| CFX_ImageTransformer(const RetainPtr<CFX_DIBBase>& pSrc, |
| const CFX_Matrix& matrix, |
| const FXDIB_ResampleOptions& options, |
| const FX_RECT* pClip); |
| ~CFX_ImageTransformer(); |
| |
| bool Continue(PauseIndicatorIface* pPause); |
| |
| const FX_RECT& result() const { return m_result; } |
| RetainPtr<CFX_DIBitmap> DetachBitmap(); |
| |
| private: |
| enum StretchType { |
| kNone, |
| kNormal, |
| kRotate, |
| kOther, |
| }; |
| |
| void ContinueRotate(PauseIndicatorIface* pPause); |
| void ContinueOther(PauseIndicatorIface* pPause); |
| |
| void CalcMask(const CalcData& cdata); |
| void CalcAlpha(const CalcData& cdata); |
| void CalcMono(const CalcData& cdata, FXDIB_Format format); |
| void CalcColor(const CalcData& cdata, FXDIB_Format format, int Bpp); |
| |
| bool IsBilinear() const; |
| bool IsBiCubic() const; |
| |
| RetainPtr<CFX_DIBBase> const m_pSrc; |
| const CFX_Matrix m_matrix; |
| FX_RECT m_StretchClip; |
| FX_RECT m_result; |
| CFX_Matrix m_dest2stretch; |
| std::unique_ptr<CFX_ImageStretcher> m_Stretcher; |
| CFX_BitmapStorer m_Storer; |
| const FXDIB_ResampleOptions m_ResampleOptions; |
| StretchType m_type = kNone; |
| }; |
| |
| #endif // CORE_FXGE_DIB_CFX_IMAGETRANSFORMER_H_ |