Move core/fxge/include to core/fxge

BUG=pdfium:611

Review-Url: https://codereview.chromium.org/2377393002

1 files changed, 680 insertions, 0 deletions

diff --git a/core/fxge/fx_dib.h b/core/fxge/fx_dib.h
new file mode 100644
index 0000000000..038d103989
--- /dev/null
+++ b/core/fxge/fx_dib.h
@@ -0,0 +1,680 @@
+// Copyright 2014 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_FX_DIB_H_
+#define CORE_FXGE_FX_DIB_H_
+
+#include <memory>
+#include <vector>
+
+#include "core/fxcrt/cfx_count_ref.h"
+#include "core/fxcrt/fx_basic.h"
+#include "core/fxcrt/fx_coordinates.h"
+
+enum FXDIB_Format {
+  FXDIB_Invalid = 0,
+  FXDIB_1bppMask = 0x101,
+  FXDIB_1bppRgb = 0x001,
+  FXDIB_1bppCmyk = 0x401,
+  FXDIB_8bppMask = 0x108,
+  FXDIB_8bppRgb = 0x008,
+  FXDIB_8bppRgba = 0x208,
+  FXDIB_8bppCmyk = 0x408,
+  FXDIB_8bppCmyka = 0x608,
+  FXDIB_Rgb = 0x018,
+  FXDIB_Rgba = 0x218,
+  FXDIB_Rgb32 = 0x020,
+  FXDIB_Argb = 0x220,
+  FXDIB_Cmyk = 0x420,
+  FXDIB_Cmyka = 0x620,
+};
+
+enum FXDIB_Channel {
+  FXDIB_Red = 1,
+  FXDIB_Green,
+  FXDIB_Blue,
+  FXDIB_Cyan,
+  FXDIB_Magenta,
+  FXDIB_Yellow,
+  FXDIB_Black,
+  FXDIB_Alpha
+};
+
+#define FXDIB_DOWNSAMPLE 0x04
+#define FXDIB_INTERPOL 0x20
+#define FXDIB_BICUBIC_INTERPOL 0x80
+#define FXDIB_NOSMOOTH 0x100
+#define FXDIB_BLEND_NORMAL 0
+#define FXDIB_BLEND_MULTIPLY 1
+#define FXDIB_BLEND_SCREEN 2
+#define FXDIB_BLEND_OVERLAY 3
+#define FXDIB_BLEND_DARKEN 4
+#define FXDIB_BLEND_LIGHTEN 5
+
+#define FXDIB_BLEND_COLORDODGE 6
+#define FXDIB_BLEND_COLORBURN 7
+#define FXDIB_BLEND_HARDLIGHT 8
+#define FXDIB_BLEND_SOFTLIGHT 9
+#define FXDIB_BLEND_DIFFERENCE 10
+#define FXDIB_BLEND_EXCLUSION 11
+#define FXDIB_BLEND_NONSEPARABLE 21
+#define FXDIB_BLEND_HUE 21
+#define FXDIB_BLEND_SATURATION 22
+#define FXDIB_BLEND_COLOR 23
+#define FXDIB_BLEND_LUMINOSITY 24
+#define FXDIB_BLEND_UNSUPPORTED -1
+typedef uint32_t FX_ARGB;
+typedef uint32_t FX_COLORREF;
+typedef uint32_t FX_CMYK;
+class CFX_ClipRgn;
+class CFX_DIBSource;
+class CFX_DIBitmap;
+class CStretchEngine;
+
+#define FXSYS_RGB(r, g, b) ((r) | ((g) << 8) | ((b) << 16))
+#define FXSYS_GetRValue(rgb) ((rgb)&0xff)
+#define FXSYS_GetGValue(rgb) (((rgb) >> 8) & 0xff)
+#define FXSYS_GetBValue(rgb) (((rgb) >> 16) & 0xff)
+#define FX_CCOLOR(val) (255 - (val))
+#define FXSYS_CMYK(c, m, y, k) (((c) << 24) | ((m) << 16) | ((y) << 8) | (k))
+#define FXSYS_GetCValue(cmyk) ((uint8_t)((cmyk) >> 24) & 0xff)
+#define FXSYS_GetMValue(cmyk) ((uint8_t)((cmyk) >> 16) & 0xff)
+#define FXSYS_GetYValue(cmyk) ((uint8_t)((cmyk) >> 8) & 0xff)
+#define FXSYS_GetKValue(cmyk) ((uint8_t)(cmyk)&0xff)
+void CmykDecode(FX_CMYK cmyk, int& c, int& m, int& y, int& k);
+inline FX_CMYK CmykEncode(int c, int m, int y, int k) {
+  return (c << 24) | (m << 16) | (y << 8) | k;
+}
+void ArgbDecode(FX_ARGB argb, int& a, int& r, int& g, int& b);
+void ArgbDecode(FX_ARGB argb, int& a, FX_COLORREF& rgb);
+inline FX_ARGB ArgbEncode(int a, int r, int g, int b) {
+  return (a << 24) | (r << 16) | (g << 8) | b;
+}
+FX_ARGB ArgbEncode(int a, FX_COLORREF rgb);
+#define FXARGB_A(argb) ((uint8_t)((argb) >> 24))
+#define FXARGB_R(argb) ((uint8_t)((argb) >> 16))
+#define FXARGB_G(argb) ((uint8_t)((argb) >> 8))
+#define FXARGB_B(argb) ((uint8_t)(argb))
+#define FXARGB_MAKE(a, r, g, b) \
+  (((uint32_t)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
+#define FXARGB_MUL_ALPHA(argb, alpha) \
+  (((((argb) >> 24) * (alpha) / 255) << 24) | ((argb)&0xffffff))
+#define FXRGB2GRAY(r, g, b) (((b)*11 + (g)*59 + (r)*30) / 100)
+#define FXCMYK2GRAY(c, m, y, k)                                       \
+  (((255 - (c)) * (255 - (k)) * 30 + (255 - (m)) * (255 - (k)) * 59 + \
+    (255 - (y)) * (255 - (k)) * 11) /                                 \
+   25500)
+#define FXDIB_ALPHA_MERGE(backdrop, source, source_alpha) \
+  (((backdrop) * (255 - (source_alpha)) + (source) * (source_alpha)) / 255)
+#define FXDIB_ALPHA_UNION(dest, src) ((dest) + (src) - (dest) * (src) / 255)
+#define FXCMYK_GETDIB(p)                                    \
+  ((((uint8_t*)(p))[0] << 24 | (((uint8_t*)(p))[1] << 16) | \
+    (((uint8_t*)(p))[2] << 8) | ((uint8_t*)(p))[3]))
+#define FXCMYK_SETDIB(p, cmyk)  ((uint8_t*)(p))[0] = (uint8_t)((cmyk) >> 24), \
+        ((uint8_t*)(p))[1] = (uint8_t)((cmyk) >> 16), \
+                              ((uint8_t*)(p))[2] = (uint8_t)((cmyk) >> 8), \
+                                      ((uint8_t*)(p))[3] = (uint8_t)(cmyk))
+#define FXARGB_GETDIB(p)                              \
+  ((((uint8_t*)(p))[0]) | (((uint8_t*)(p))[1] << 8) | \
+   (((uint8_t*)(p))[2] << 16) | (((uint8_t*)(p))[3] << 24))
+#define FXARGB_SETDIB(p, argb)                  \
+  ((uint8_t*)(p))[0] = (uint8_t)(argb),         \
+  ((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8),  \
+  ((uint8_t*)(p))[2] = (uint8_t)((argb) >> 16), \
+  ((uint8_t*)(p))[3] = (uint8_t)((argb) >> 24)
+#define FXARGB_COPY(dest, src)                      \
+  *(uint8_t*)(dest) = *(uint8_t*)(src),             \
+  *((uint8_t*)(dest) + 1) = *((uint8_t*)(src) + 1), \
+  *((uint8_t*)(dest) + 2) = *((uint8_t*)(src) + 2), \
+  *((uint8_t*)(dest) + 3) = *((uint8_t*)(src) + 3)
+#define FXCMYK_COPY(dest, src)                      \
+  *(uint8_t*)(dest) = *(uint8_t*)(src),             \
+  *((uint8_t*)(dest) + 1) = *((uint8_t*)(src) + 1), \
+  *((uint8_t*)(dest) + 2) = *((uint8_t*)(src) + 2), \
+  *((uint8_t*)(dest) + 3) = *((uint8_t*)(src) + 3)
+#define FXARGB_SETRGBORDERDIB(p, argb)          \
+  ((uint8_t*)(p))[3] = (uint8_t)(argb >> 24),   \
+  ((uint8_t*)(p))[0] = (uint8_t)((argb) >> 16), \
+  ((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8),  \
+  ((uint8_t*)(p))[2] = (uint8_t)(argb)
+#define FXARGB_GETRGBORDERDIB(p)                     \
+  (((uint8_t*)(p))[2]) | (((uint8_t*)(p))[1] << 8) | \
+      (((uint8_t*)(p))[0] << 16) | (((uint8_t*)(p))[3] << 24)
+#define FXARGB_RGBORDERCOPY(dest, src)                                   \
+  *((uint8_t*)(dest) + 3) = *((uint8_t*)(src) + 3),                      \
+                       *(uint8_t*)(dest) = *((uint8_t*)(src) + 2),       \
+                       *((uint8_t*)(dest) + 1) = *((uint8_t*)(src) + 1), \
+                       *((uint8_t*)(dest) + 2) = *((uint8_t*)(src))
+#define FXARGB_TODIB(argb) (argb)
+#define FXCMYK_TODIB(cmyk)                                    \
+  ((uint8_t)((cmyk) >> 24) | ((uint8_t)((cmyk) >> 16)) << 8 | \
+   ((uint8_t)((cmyk) >> 8)) << 16 | ((uint8_t)(cmyk) << 24))
+#define FXARGB_TOBGRORDERDIB(argb)                       \
+  ((uint8_t)(argb >> 16) | ((uint8_t)(argb >> 8)) << 8 | \
+   ((uint8_t)(argb)) << 16 | ((uint8_t)(argb >> 24) << 24))
+#define FXGETFLAG_COLORTYPE(flag) (uint8_t)((flag) >> 8)
+#define FXGETFLAG_ALPHA_FILL(flag) (uint8_t)(flag)
+
+FX_BOOL ConvertBuffer(FXDIB_Format dest_format,
+                      uint8_t* dest_buf,
+                      int dest_pitch,
+                      int width,
+                      int height,
+                      const CFX_DIBSource* pSrcBitmap,
+                      int src_left,
+                      int src_top,
+                      std::unique_ptr<uint32_t, FxFreeDeleter>* pal);
+
+class CFX_DIBSource {
+ public:
+  virtual ~CFX_DIBSource();
+
+  virtual uint8_t* GetBuffer() const;
+  virtual const uint8_t* GetScanline(int line) const = 0;
+  virtual FX_BOOL SkipToScanline(int line, IFX_Pause* pPause) const;
+  virtual void DownSampleScanline(int line,
+                                  uint8_t* dest_scan,
+                                  int dest_bpp,
+                                  int dest_width,
+                                  FX_BOOL bFlipX,
+                                  int clip_left,
+                                  int clip_width) const = 0;
+
+  int GetWidth() const { return m_Width; }
+  int GetHeight() const { return m_Height; }
+
+  FXDIB_Format GetFormat() const {
+    return (FXDIB_Format)(m_AlphaFlag * 0x100 + m_bpp);
+  }
+  uint32_t GetPitch() const { return m_Pitch; }
+  uint32_t* GetPalette() const { return m_pPalette.get(); }
+  int GetBPP() const { return m_bpp; }
+
+  // TODO(thestig): Investigate this. Given the possible values of FXDIB_Format,
+  // it feels as though this should be implemented as !!(m_AlphaFlag & 1) and
+  // IsOpaqueImage() below should never be able to return TRUE.
+  bool IsAlphaMask() const { return m_AlphaFlag == 1; }
+  bool HasAlpha() const { return !!(m_AlphaFlag & 2); }
+  bool IsOpaqueImage() const { return !(m_AlphaFlag & 3); }
+  bool IsCmykImage() const { return !!(m_AlphaFlag & 4); }
+
+  int GetPaletteSize() const {
+    return IsAlphaMask() ? 0 : (m_bpp == 1 ? 2 : (m_bpp == 8 ? 256 : 0));
+  }
+
+  uint32_t GetPaletteEntry(int index) const;
+
+  void SetPaletteEntry(int index, uint32_t color);
+  uint32_t GetPaletteArgb(int index) const { return GetPaletteEntry(index); }
+  void SetPaletteArgb(int index, uint32_t color) {
+    SetPaletteEntry(index, color);
+  }
+
+  void CopyPalette(const uint32_t* pSrcPal);
+
+  CFX_DIBitmap* Clone(const FX_RECT* pClip = nullptr) const;
+  CFX_DIBitmap* CloneConvert(FXDIB_Format format) const;
+
+  CFX_DIBitmap* StretchTo(int dest_width,
+                          int dest_height,
+                          uint32_t flags = 0,
+                          const FX_RECT* pClip = nullptr) const;
+  CFX_DIBitmap* TransformTo(const CFX_Matrix* pMatrix,
+                            int& left,
+                            int& top,
+                            uint32_t flags = 0,
+                            const FX_RECT* pClip = nullptr) const;
+
+  CFX_DIBitmap* GetAlphaMask(const FX_RECT* pClip = nullptr) const;
+  FX_BOOL CopyAlphaMask(const CFX_DIBSource* pAlphaMask,
+                        const FX_RECT* pClip = nullptr);
+
+  CFX_DIBitmap* SwapXY(FX_BOOL bXFlip,
+                       FX_BOOL bYFlip,
+                       const FX_RECT* pClip = nullptr) const;
+
+  CFX_DIBitmap* FlipImage(FX_BOOL bXFlip, FX_BOOL bYFlip) const;
+
+  void GetOverlapRect(int& dest_left,
+                      int& dest_top,
+                      int& width,
+                      int& height,
+                      int src_width,
+                      int src_height,
+                      int& src_left,
+                      int& src_top,
+                      const CFX_ClipRgn* pClipRgn);
+
+#if defined _SKIA_SUPPORT_
+  void DebugVerifyBitmapIsPreMultiplied(void* buffer = nullptr) const;
+#endif
+
+  CFX_DIBitmap* m_pAlphaMask;
+
+ protected:
+  CFX_DIBSource();
+
+  void BuildPalette();
+  FX_BOOL BuildAlphaMask();
+  int FindPalette(uint32_t color) const;
+  void GetPalette(uint32_t* pal, int alpha) const;
+
+  int m_Width;
+  int m_Height;
+  int m_bpp;
+  uint32_t m_AlphaFlag;
+  uint32_t m_Pitch;
+  // TODO(weili): Use std::vector for this.
+  std::unique_ptr<uint32_t, FxFreeDeleter> m_pPalette;
+};
+
+class CFX_DIBitmap : public CFX_DIBSource {
+ public:
+  CFX_DIBitmap();
+  explicit CFX_DIBitmap(const CFX_DIBitmap& src);
+  ~CFX_DIBitmap() override;
+
+  FX_BOOL Create(int width,
+                 int height,
+                 FXDIB_Format format,
+                 uint8_t* pBuffer = nullptr,
+                 int pitch = 0);
+
+  FX_BOOL Copy(const CFX_DIBSource* pSrc);
+
+  // CFX_DIBSource
+  uint8_t* GetBuffer() const override;
+  const uint8_t* GetScanline(int line) const override;
+  void DownSampleScanline(int line,
+                          uint8_t* dest_scan,
+                          int dest_bpp,
+                          int dest_width,
+                          FX_BOOL bFlipX,
+                          int clip_left,
+                          int clip_width) const override;
+
+  void TakeOver(CFX_DIBitmap* pSrcBitmap);
+
+  FX_BOOL ConvertFormat(FXDIB_Format format);
+
+  void Clear(uint32_t color);
+
+  uint32_t GetPixel(int x, int y) const;
+
+  void SetPixel(int x, int y, uint32_t color);
+
+  FX_BOOL LoadChannel(FXDIB_Channel destChannel,
+                      const CFX_DIBSource* pSrcBitmap,
+                      FXDIB_Channel srcChannel);
+
+  FX_BOOL LoadChannel(FXDIB_Channel destChannel, int value);
+
+  FX_BOOL MultiplyAlpha(int alpha);
+
+  FX_BOOL MultiplyAlpha(const CFX_DIBSource* pAlphaMask);
+
+  FX_BOOL TransferBitmap(int dest_left,
+                         int dest_top,
+                         int width,
+                         int height,
+                         const CFX_DIBSource* pSrcBitmap,
+                         int src_left,
+                         int src_top);
+
+  FX_BOOL CompositeBitmap(int dest_left,
+                          int dest_top,
+                          int width,
+                          int height,
+                          const CFX_DIBSource* pSrcBitmap,
+                          int src_left,
+                          int src_top,
+                          int blend_type = FXDIB_BLEND_NORMAL,
+                          const CFX_ClipRgn* pClipRgn = nullptr,
+                          FX_BOOL bRgbByteOrder = FALSE,
+                          void* pIccTransform = nullptr);
+
+  FX_BOOL TransferMask(int dest_left,
+                       int dest_top,
+                       int width,
+                       int height,
+                       const CFX_DIBSource* pMask,
+                       uint32_t color,
+                       int src_left,
+                       int src_top,
+                       int alpha_flag = 0,
+                       void* pIccTransform = nullptr);
+
+  FX_BOOL CompositeMask(int dest_left,
+                        int dest_top,
+                        int width,
+                        int height,
+                        const CFX_DIBSource* pMask,
+                        uint32_t color,
+                        int src_left,
+                        int src_top,
+                        int blend_type = FXDIB_BLEND_NORMAL,
+                        const CFX_ClipRgn* pClipRgn = nullptr,
+                        FX_BOOL bRgbByteOrder = FALSE,
+                        int alpha_flag = 0,
+                        void* pIccTransform = nullptr);
+
+  FX_BOOL CompositeRect(int dest_left,
+                        int dest_top,
+                        int width,
+                        int height,
+                        uint32_t color,
+                        int alpha_flag = 0,
+                        void* pIccTransform = nullptr);
+
+  FX_BOOL ConvertColorScale(uint32_t forecolor, uint32_t backcolor);
+
+ protected:
+  FX_BOOL GetGrayData(void* pIccTransform = nullptr);
+
+  uint8_t* m_pBuffer;
+  FX_BOOL m_bExtBuf;
+};
+
+class CFX_DIBExtractor {
+ public:
+  explicit CFX_DIBExtractor(const CFX_DIBSource* pSrc);
+  ~CFX_DIBExtractor();
+
+  CFX_DIBitmap* GetBitmap() { return m_pBitmap.get(); }
+
+ private:
+  std::unique_ptr<CFX_DIBitmap> m_pBitmap;
+};
+
+typedef CFX_CountRef<CFX_DIBitmap> CFX_DIBitmapRef;
+
+class CFX_FilteredDIB : public CFX_DIBSource {
+ public:
+  CFX_FilteredDIB();
+  ~CFX_FilteredDIB() override;
+
+  void LoadSrc(const CFX_DIBSource* pSrc, FX_BOOL bAutoDropSrc = FALSE);
+
+  virtual FXDIB_Format GetDestFormat() = 0;
+
+  virtual uint32_t* GetDestPalette() = 0;
+
+  virtual void TranslateScanline(const uint8_t* src_buf,
+                                 std::vector<uint8_t>* dest_buf) const = 0;
+
+  virtual void TranslateDownSamples(uint8_t* dest_buf,
+                                    const uint8_t* src_buf,
+                                    int pixels,
+                                    int Bpp) const = 0;
+
+ protected:
+  // CFX_DIBSource
+  const uint8_t* GetScanline(int line) const override;
+  void DownSampleScanline(int line,
+                          uint8_t* dest_scan,
+                          int dest_bpp,
+                          int dest_width,
+                          FX_BOOL bFlipX,
+                          int clip_left,
+                          int clip_width) const override;
+
+  const CFX_DIBSource* m_pSrc;
+  FX_BOOL m_bAutoDropSrc;
+  mutable std::vector<uint8_t> m_Scanline;
+};
+
+class IFX_ScanlineComposer {
+ public:
+  virtual ~IFX_ScanlineComposer() {}
+
+  virtual void ComposeScanline(int line,
+                               const uint8_t* scanline,
+                               const uint8_t* scan_extra_alpha = nullptr) = 0;
+
+  virtual FX_BOOL SetInfo(int width,
+                          int height,
+                          FXDIB_Format src_format,
+                          uint32_t* pSrcPalette) = 0;
+};
+
+class CFX_ScanlineCompositor {
+ public:
+  CFX_ScanlineCompositor();
+
+  ~CFX_ScanlineCompositor();
+
+  FX_BOOL Init(FXDIB_Format dest_format,
+               FXDIB_Format src_format,
+               int32_t width,
+               uint32_t* pSrcPalette,
+               uint32_t mask_color,
+               int blend_type,
+               FX_BOOL bClip,
+               FX_BOOL bRgbByteOrder = FALSE,
+               int alpha_flag = 0,
+               void* pIccTransform = nullptr);
+
+  void CompositeRgbBitmapLine(uint8_t* dest_scan,
+                              const uint8_t* src_scan,
+                              int width,
+                              const uint8_t* clip_scan,
+                              const uint8_t* src_extra_alpha = nullptr,
+                              uint8_t* dst_extra_alpha = nullptr);
+
+  void CompositePalBitmapLine(uint8_t* dest_scan,
+                              const uint8_t* src_scan,
+                              int src_left,
+                              int width,
+                              const uint8_t* clip_scan,
+                              const uint8_t* src_extra_alpha = nullptr,
+                              uint8_t* dst_extra_alpha = nullptr);
+
+  void CompositeByteMaskLine(uint8_t* dest_scan,
+                             const uint8_t* src_scan,
+                             int width,
+                             const uint8_t* clip_scan,
+                             uint8_t* dst_extra_alpha = nullptr);
+
+  void CompositeBitMaskLine(uint8_t* dest_scan,
+                            const uint8_t* src_scan,
+                            int src_left,
+                            int width,
+                            const uint8_t* clip_scan,
+                            uint8_t* dst_extra_alpha = nullptr);
+
+ protected:
+  int m_Transparency;
+  FXDIB_Format m_SrcFormat, m_DestFormat;
+  uint32_t* m_pSrcPalette;
+
+  int m_MaskAlpha, m_MaskRed, m_MaskGreen, m_MaskBlue, m_MaskBlack;
+  int m_BlendType;
+  void* m_pIccTransform;
+  uint8_t* m_pCacheScanline;
+  int m_CacheSize;
+  FX_BOOL m_bRgbByteOrder;
+};
+
+class CFX_BitmapComposer : public IFX_ScanlineComposer {
+ public:
+  CFX_BitmapComposer();
+  ~CFX_BitmapComposer() override;
+
+  void Compose(CFX_DIBitmap* pDest,
+               const CFX_ClipRgn* pClipRgn,
+               int bitmap_alpha,
+               uint32_t mask_color,
+               FX_RECT& dest_rect,
+               FX_BOOL bVertical,
+               FX_BOOL bFlipX,
+               FX_BOOL bFlipY,
+               FX_BOOL bRgbByteOrder = FALSE,
+               int alpha_flag = 0,
+               void* pIccTransform = nullptr,
+               int blend_type = FXDIB_BLEND_NORMAL);
+
+  // IFX_ScanlineComposer
+  FX_BOOL SetInfo(int width,
+                  int height,
+                  FXDIB_Format src_format,
+                  uint32_t* pSrcPalette) override;
+
+  void ComposeScanline(int line,
+                       const uint8_t* scanline,
+                       const uint8_t* scan_extra_alpha) override;
+
+ protected:
+  void DoCompose(uint8_t* dest_scan,
+                 const uint8_t* src_scan,
+                 int dest_width,
+                 const uint8_t* clip_scan,
+                 const uint8_t* src_extra_alpha = nullptr,
+                 uint8_t* dst_extra_alpha = nullptr);
+  CFX_DIBitmap* m_pBitmap;
+  const CFX_ClipRgn* m_pClipRgn;
+  FXDIB_Format m_SrcFormat;
+  int m_DestLeft, m_DestTop, m_DestWidth, m_DestHeight, m_BitmapAlpha;
+  uint32_t m_MaskColor;
+  const CFX_DIBitmap* m_pClipMask;
+  CFX_ScanlineCompositor m_Compositor;
+  FX_BOOL m_bVertical, m_bFlipX, m_bFlipY;
+  int m_AlphaFlag;
+  void* m_pIccTransform;
+  FX_BOOL m_bRgbByteOrder;
+  int m_BlendType;
+  void ComposeScanlineV(int line,
+                        const uint8_t* scanline,
+                        const uint8_t* scan_extra_alpha = nullptr);
+  uint8_t* m_pScanlineV;
+  uint8_t* m_pClipScanV;
+  uint8_t* m_pAddClipScan;
+  uint8_t* m_pScanlineAlphaV;
+};
+
+class CFX_BitmapStorer : public IFX_ScanlineComposer {
+ public:
+  CFX_BitmapStorer();
+  ~CFX_BitmapStorer() override;
+
+  // IFX_ScanlineComposer
+  void ComposeScanline(int line,
+                       const uint8_t* scanline,
+                       const uint8_t* scan_extra_alpha) override;
+  FX_BOOL SetInfo(int width,
+                  int height,
+                  FXDIB_Format src_format,
+                  uint32_t* pSrcPalette) override;
+
+  CFX_DIBitmap* GetBitmap() { return m_pBitmap.get(); }
+  std::unique_ptr<CFX_DIBitmap> Detach();
+  void Replace(std::unique_ptr<CFX_DIBitmap> pBitmap);
+
+ private:
+  std::unique_ptr<CFX_DIBitmap> m_pBitmap;
+};
+
+class CFX_ImageStretcher {
+ public:
+  CFX_ImageStretcher(IFX_ScanlineComposer* pDest,
+                     const CFX_DIBSource* pSource,
+                     int dest_width,
+                     int dest_height,
+                     const FX_RECT& bitmap_rect,
+                     uint32_t flags);
+  ~CFX_ImageStretcher();
+
+  FX_BOOL Start();
+  FX_BOOL Continue(IFX_Pause* pPause);
+
+  const CFX_DIBSource* source() { return m_pSource; }
+
+ private:
+  FX_BOOL StartQuickStretch();
+  FX_BOOL StartStretch();
+  FX_BOOL ContinueQuickStretch(IFX_Pause* pPause);
+  FX_BOOL ContinueStretch(IFX_Pause* pPause);
+
+  IFX_ScanlineComposer* const m_pDest;
+  const CFX_DIBSource* const 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;
+  FX_BOOL m_bFlipX;
+  FX_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;
+};
+
+class CFX_ImageTransformer {
+ public:
+  CFX_ImageTransformer(const CFX_DIBSource* pSrc,
+                       const CFX_Matrix* pMatrix,
+                       int flags,
+                       const FX_RECT* pClip);
+  ~CFX_ImageTransformer();
+
+  FX_BOOL Start();
+  FX_BOOL Continue(IFX_Pause* pPause);
+
+  const FX_RECT& result() const { return m_result; }
+  std::unique_ptr<CFX_DIBitmap> DetachBitmap();
+
+ private:
+  const CFX_DIBSource* const m_pSrc;
+  const CFX_Matrix* const m_pMatrix;
+  const FX_RECT* const m_pClip;
+  FX_RECT m_StretchClip;
+  FX_RECT m_result;
+  CFX_Matrix m_dest2stretch;
+  std::unique_ptr<CFX_ImageStretcher> m_Stretcher;
+  CFX_BitmapStorer m_Storer;
+  const uint32_t m_Flags;
+  int m_Status;
+};
+
+class CFX_ImageRenderer {
+ public:
+  CFX_ImageRenderer();
+  ~CFX_ImageRenderer();
+
+  FX_BOOL Start(CFX_DIBitmap* pDevice,
+                const CFX_ClipRgn* pClipRgn,
+                const CFX_DIBSource* pSource,
+                int bitmap_alpha,
+                uint32_t mask_color,
+                const CFX_Matrix* pMatrix,
+                uint32_t dib_flags,
+                FX_BOOL bRgbByteOrder = FALSE,
+                int alpha_flag = 0,
+                void* pIccTransform = nullptr,
+                int blend_type = FXDIB_BLEND_NORMAL);
+
+  FX_BOOL Continue(IFX_Pause* pPause);
+
+ protected:
+  CFX_DIBitmap* m_pDevice;
+  const CFX_ClipRgn* m_pClipRgn;
+  int m_BitmapAlpha;
+  uint32_t m_MaskColor;
+  CFX_Matrix m_Matrix;
+  std::unique_ptr<CFX_ImageTransformer> m_pTransformer;
+  std::unique_ptr<CFX_ImageStretcher> m_Stretcher;
+  CFX_BitmapComposer m_Composer;
+  int m_Status;
+  FX_RECT m_ClipBox;
+  uint32_t m_Flags;
+  int m_AlphaFlag;
+  void* m_pIccTransform;
+  FX_BOOL m_bRgbByteOrder;
+  int m_BlendType;
+};
+
+#endif  // CORE_FXGE_FX_DIB_H_