Clean up unneeded code in agg and skia driver

- The agg driver never initializes an ICC transform and always uses an
alpha_flag equal to 0 in a couple of methods.
- The skia driver is not using CFX_Renderer. If it needs it later, we should
move it out of fx_agg_driver.cpp into its own file, instead of duplicating the
code.

Change-Id: Ibd721cf1760270bea3f8f95d6e1e8edbc6ba1792
Reviewed-on: https://pdfium-review.googlesource.com/3952
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Cary Clark <caryclark@google.com>
Commit-Queue: Nicolás Peña <npm@chromium.org>

1 files changed, 0 insertions, 831 deletions

diff --git a/core/fxge/skia/fx_skia_device.cpp b/core/fxge/skia/fx_skia_device.cpp
index df43c18fcc..46e284d8aa 100644
--- a/core/fxge/skia/fx_skia_device.cpp
+++ b/core/fxge/skia/fx_skia_device.cpp
@@ -2434,834 +2434,3 @@ void CFX_DIBSource::DebugVerifyBitmapIsPreMultiplied(void* opt) const {
   }
 #endif  // SK_DEBUG
 }
-
-#ifdef _SKIA_SUPPORT_PATHS_
-class CFX_Renderer {
- private:
-  int m_Alpha, m_Red, m_Green, m_Blue, m_Gray;
-  uint32_t m_Color;
-  bool m_bFullCover;
-  bool m_bRgbByteOrder;
-  CFX_RetainPtr<CFX_DIBitmap> m_pOriDevice;
-  FX_RECT m_ClipBox;
-  CFX_RetainPtr<CFX_DIBitmap> m_pClipMask;
-  CFX_RetainPtr<CFX_DIBitmap> m_pDevice;
-  const CFX_ClipRgn* m_pClipRgn;
-  void (CFX_Renderer::*composite_span)(uint8_t*,
-                                       int,
-                                       int,
-                                       int,
-                                       uint8_t*,
-                                       int,
-                                       int,
-                                       uint8_t*,
-                                       uint8_t*);
-
- public:
-  void prepare(unsigned) {}
-
-  void CompositeSpan(uint8_t* dest_scan,
-                     uint8_t* ori_scan,
-                     int Bpp,
-                     bool bDestAlpha,
-                     int span_left,
-                     int span_len,
-                     uint8_t* cover_scan,
-                     int clip_left,
-                     int clip_right,
-                     uint8_t* clip_scan) {
-    ASSERT(!m_pDevice->IsCmykImage());
-    int col_start = span_left < clip_left ? clip_left - span_left : 0;
-    int col_end = (span_left + span_len) < clip_right
-                      ? span_len
-                      : (clip_right - span_left);
-    if (Bpp) {
-      dest_scan += col_start * Bpp;
-      ori_scan += col_start * Bpp;
-    } else {
-      dest_scan += col_start / 8;
-      ori_scan += col_start / 8;
-    }
-    if (m_bRgbByteOrder) {
-      if (Bpp == 4 && bDestAlpha) {
-        for (int col = col_start; col < col_end; col++) {
-          int src_alpha;
-          if (clip_scan) {
-            src_alpha = m_Alpha * clip_scan[col] / 255;
-          } else {
-            src_alpha = m_Alpha;
-          }
-          uint8_t dest_alpha =
-              ori_scan[3] + src_alpha - ori_scan[3] * src_alpha / 255;
-          dest_scan[3] = dest_alpha;
-          int alpha_ratio = src_alpha * 255 / dest_alpha;
-          if (m_bFullCover) {
-            *dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Red, alpha_ratio);
-            *dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, alpha_ratio);
-            *dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, alpha_ratio);
-            dest_scan++;
-            ori_scan++;
-          } else {
-            int r = FXDIB_ALPHA_MERGE(*ori_scan++, m_Red, alpha_ratio);
-            int g = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, alpha_ratio);
-            int b = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, alpha_ratio);
-            ori_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]);
-            dest_scan += 2;
-          }
-        }
-        return;
-      }
-      if (Bpp == 3 || Bpp == 4) {
-        for (int col = col_start; col < col_end; col++) {
-          int src_alpha;
-          if (clip_scan) {
-            src_alpha = m_Alpha * clip_scan[col] / 255;
-          } else {
-            src_alpha = m_Alpha;
-          }
-          int r = FXDIB_ALPHA_MERGE(*ori_scan++, m_Red, src_alpha);
-          int g = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, src_alpha);
-          int b = FXDIB_ALPHA_MERGE(*ori_scan, m_Blue, src_alpha);
-          ori_scan += Bpp - 2;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]);
-          dest_scan++;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]);
-          dest_scan++;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]);
-          dest_scan += Bpp - 2;
-        }
-      }
-      return;
-    }
-    if (Bpp == 4 && bDestAlpha) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (clip_scan) {
-          src_alpha = m_Alpha * clip_scan[col] / 255;
-        } else {
-          src_alpha = m_Alpha;
-        }
-        int src_alpha_covered = src_alpha * cover_scan[col] / 255;
-        if (src_alpha_covered == 0) {
-          dest_scan += 4;
-          continue;
-        }
-        if (cover_scan[col] == 255) {
-          dest_scan[3] = src_alpha_covered;
-          *dest_scan++ = m_Blue;
-          *dest_scan++ = m_Green;
-          *dest_scan = m_Red;
-          dest_scan += 2;
-          continue;
-        } else {
-          if (dest_scan[3] == 0) {
-            dest_scan[3] = src_alpha_covered;
-            *dest_scan++ = m_Blue;
-            *dest_scan++ = m_Green;
-            *dest_scan = m_Red;
-            dest_scan += 2;
-            continue;
-          }
-          uint8_t cover = cover_scan[col];
-          dest_scan[3] = FXDIB_ALPHA_MERGE(dest_scan[3], src_alpha, cover);
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, cover);
-          dest_scan++;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, cover);
-          dest_scan++;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, cover);
-          dest_scan += 2;
-        }
-      }
-      return;
-    }
-    if (Bpp == 3 || Bpp == 4) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (clip_scan) {
-          src_alpha = m_Alpha * clip_scan[col] / 255;
-        } else {
-          src_alpha = m_Alpha;
-        }
-        if (m_bFullCover) {
-          *dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, src_alpha);
-          *dest_scan++ = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, src_alpha);
-          *dest_scan = FXDIB_ALPHA_MERGE(*ori_scan, m_Red, src_alpha);
-          dest_scan += Bpp - 2;
-          ori_scan += Bpp - 2;
-          continue;
-        }
-        int b = FXDIB_ALPHA_MERGE(*ori_scan++, m_Blue, src_alpha);
-        int g = FXDIB_ALPHA_MERGE(*ori_scan++, m_Green, src_alpha);
-        int r = FXDIB_ALPHA_MERGE(*ori_scan, m_Red, src_alpha);
-        ori_scan += Bpp - 2;
-        *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, b, cover_scan[col]);
-        dest_scan++;
-        *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, g, cover_scan[col]);
-        dest_scan++;
-        *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, r, cover_scan[col]);
-        dest_scan += Bpp - 2;
-        continue;
-      }
-      return;
-    }
-    if (Bpp == 1) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (clip_scan) {
-          src_alpha = m_Alpha * clip_scan[col] / 255;
-        } else {
-          src_alpha = m_Alpha;
-        }
-        if (m_bFullCover) {
-          *dest_scan = FXDIB_ALPHA_MERGE(*ori_scan++, m_Gray, src_alpha);
-        } else {
-          int gray = FXDIB_ALPHA_MERGE(*ori_scan++, m_Gray, src_alpha);
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, gray, cover_scan[col]);
-          dest_scan++;
-        }
-      }
-    } else {
-      int index = 0;
-      if (m_pDevice->GetPalette()) {
-        for (int i = 0; i < 2; i++) {
-          if (FXARGB_TODIB(m_pDevice->GetPalette()[i]) == m_Color) {
-            index = i;
-          }
-        }
-      } else {
-        index = ((uint8_t)m_Color == 0xff) ? 1 : 0;
-      }
-      uint8_t* dest_scan1 = dest_scan;
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (clip_scan) {
-          src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-        } else {
-          src_alpha = m_Alpha * cover_scan[col] / 255;
-        }
-        if (src_alpha) {
-          if (!index) {
-            *dest_scan1 &= ~(1 << (7 - (col + span_left) % 8));
-          } else {
-            *dest_scan1 |= 1 << (7 - (col + span_left) % 8);
-          }
-        }
-        dest_scan1 = dest_scan + (span_left % 8 + col - col_start + 1) / 8;
-      }
-    }
-  }
-
-  void CompositeSpan1bpp(uint8_t* dest_scan,
-                         int Bpp,
-                         int span_left,
-                         int span_len,
-                         uint8_t* cover_scan,
-                         int clip_left,
-                         int clip_right,
-                         uint8_t* clip_scan,
-                         uint8_t* dest_extra_alpha_scan) {
-    ASSERT(!m_bRgbByteOrder);
-    ASSERT(!m_pDevice->IsCmykImage());
-    int col_start = span_left < clip_left ? clip_left - span_left : 0;
-    int col_end = (span_left + span_len) < clip_right
-                      ? span_len
-                      : (clip_right - span_left);
-    dest_scan += col_start / 8;
-    int index = 0;
-    if (m_pDevice->GetPalette()) {
-      for (int i = 0; i < 2; i++) {
-        if (FXARGB_TODIB(m_pDevice->GetPalette()[i]) == m_Color) {
-          index = i;
-        }
-      }
-    } else {
-      index = ((uint8_t)m_Color == 0xff) ? 1 : 0;
-    }
-    uint8_t* dest_scan1 = dest_scan;
-    for (int col = col_start; col < col_end; col++) {
-      int src_alpha;
-      if (clip_scan) {
-        src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-      } else {
-        src_alpha = m_Alpha * cover_scan[col] / 255;
-      }
-      if (src_alpha) {
-        if (!index) {
-          *dest_scan1 &= ~(1 << (7 - (col + span_left) % 8));
-        } else {
-          *dest_scan1 |= 1 << (7 - (col + span_left) % 8);
-        }
-      }
-      dest_scan1 = dest_scan + (span_left % 8 + col - col_start + 1) / 8;
-    }
-  }
-
-  void CompositeSpanGray(uint8_t* dest_scan,
-                         int Bpp,
-                         int span_left,
-                         int span_len,
-                         uint8_t* cover_scan,
-                         int clip_left,
-                         int clip_right,
-                         uint8_t* clip_scan,
-                         uint8_t* dest_extra_alpha_scan) {
-    ASSERT(!m_bRgbByteOrder);
-    int col_start = span_left < clip_left ? clip_left - span_left : 0;
-    int col_end = (span_left + span_len) < clip_right
-                      ? span_len
-                      : (clip_right - span_left);
-    dest_scan += col_start;
-    if (dest_extra_alpha_scan) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (m_bFullCover) {
-          if (clip_scan) {
-            src_alpha = m_Alpha * clip_scan[col] / 255;
-          } else {
-            src_alpha = m_Alpha;
-          }
-        } else {
-          if (clip_scan) {
-            src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-          } else {
-            src_alpha = m_Alpha * cover_scan[col] / 255;
-          }
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            *dest_scan = m_Gray;
-            *dest_extra_alpha_scan = m_Alpha;
-          } else {
-            uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha -
-                                 (*dest_extra_alpha_scan) * src_alpha / 255;
-            *dest_extra_alpha_scan++ = dest_alpha;
-            int alpha_ratio = src_alpha * 255 / dest_alpha;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, alpha_ratio);
-            dest_scan++;
-            continue;
-          }
-        }
-        dest_extra_alpha_scan++;
-        dest_scan++;
-      }
-    } else {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (clip_scan) {
-          src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-        } else {
-          src_alpha = m_Alpha * cover_scan[col] / 255;
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            *dest_scan = m_Gray;
-          } else {
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, src_alpha);
-          }
-        }
-        dest_scan++;
-      }
-    }
-  }
-
-  void CompositeSpanARGB(uint8_t* dest_scan,
-                         int Bpp,
-                         int span_left,
-                         int span_len,
-                         uint8_t* cover_scan,
-                         int clip_left,
-                         int clip_right,
-                         uint8_t* clip_scan,
-                         uint8_t* dest_extra_alpha_scan) {
-    int col_start = span_left < clip_left ? clip_left - span_left : 0;
-    int col_end = (span_left + span_len) < clip_right
-                      ? span_len
-                      : (clip_right - span_left);
-    dest_scan += col_start * Bpp;
-    if (m_bRgbByteOrder) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (m_bFullCover) {
-          if (clip_scan) {
-            src_alpha = m_Alpha * clip_scan[col] / 255;
-          } else {
-            src_alpha = m_Alpha;
-          }
-        } else {
-          if (clip_scan) {
-            src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-          } else {
-            src_alpha = m_Alpha * cover_scan[col] / 255;
-          }
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            *(uint32_t*)dest_scan = m_Color;
-          } else {
-            uint8_t dest_alpha =
-                dest_scan[3] + src_alpha - dest_scan[3] * src_alpha / 255;
-            dest_scan[3] = dest_alpha;
-            int alpha_ratio = src_alpha * 255 / dest_alpha;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
-            dest_scan += 2;
-            continue;
-          }
-        }
-        dest_scan += 4;
-      }
-      return;
-    }
-    for (int col = col_start; col < col_end; col++) {
-      int src_alpha;
-      if (m_bFullCover) {
-        if (clip_scan) {
-          src_alpha = m_Alpha * clip_scan[col] / 255;
-        } else {
-          src_alpha = m_Alpha;
-        }
-      } else {
-        if (clip_scan) {
-          src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-        } else {
-          src_alpha = m_Alpha * cover_scan[col] / 255;
-        }
-      }
-      if (src_alpha) {
-        if (src_alpha == 255) {
-          *(uint32_t*)dest_scan = m_Color;
-        } else {
-          if (dest_scan[3] == 0) {
-            dest_scan[3] = src_alpha;
-            *dest_scan++ = m_Blue;
-            *dest_scan++ = m_Green;
-            *dest_scan = m_Red;
-            dest_scan += 2;
-            continue;
-          }
-          uint8_t dest_alpha =
-              dest_scan[3] + src_alpha - dest_scan[3] * src_alpha / 255;
-          dest_scan[3] = dest_alpha;
-          int alpha_ratio = src_alpha * 255 / dest_alpha;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
-          dest_scan++;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
-          dest_scan++;
-          *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
-          dest_scan += 2;
-          continue;
-        }
-      }
-      dest_scan += Bpp;
-    }
-  }
-
-  void CompositeSpanRGB(uint8_t* dest_scan,
-                        int Bpp,
-                        int span_left,
-                        int span_len,
-                        uint8_t* cover_scan,
-                        int clip_left,
-                        int clip_right,
-                        uint8_t* clip_scan,
-                        uint8_t* dest_extra_alpha_scan) {
-    int col_start = span_left < clip_left ? clip_left - span_left : 0;
-    int col_end = (span_left + span_len) < clip_right
-                      ? span_len
-                      : (clip_right - span_left);
-    dest_scan += col_start * Bpp;
-    if (m_bRgbByteOrder) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (clip_scan) {
-          src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-        } else {
-          src_alpha = m_Alpha * cover_scan[col] / 255;
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            if (Bpp == 4) {
-              *(uint32_t*)dest_scan = m_Color;
-            } else if (Bpp == 3) {
-              *dest_scan++ = m_Red;
-              *dest_scan++ = m_Green;
-              *dest_scan++ = m_Blue;
-              continue;
-            }
-          } else {
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha);
-            dest_scan += Bpp - 2;
-            continue;
-          }
-        }
-        dest_scan += Bpp;
-      }
-      return;
-    }
-    if (Bpp == 3 && dest_extra_alpha_scan) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (m_bFullCover) {
-          if (clip_scan) {
-            src_alpha = m_Alpha * clip_scan[col] / 255;
-          } else {
-            src_alpha = m_Alpha;
-          }
-        } else {
-          if (clip_scan) {
-            src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-          } else {
-            src_alpha = m_Alpha * cover_scan[col] / 255;
-          }
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            *dest_scan++ = (uint8_t)m_Blue;
-            *dest_scan++ = (uint8_t)m_Green;
-            *dest_scan++ = (uint8_t)m_Red;
-            *dest_extra_alpha_scan++ = (uint8_t)m_Alpha;
-            continue;
-          } else {
-            uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha -
-                                 (*dest_extra_alpha_scan) * src_alpha / 255;
-            *dest_extra_alpha_scan++ = dest_alpha;
-            int alpha_ratio = src_alpha * 255 / dest_alpha;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
-            dest_scan++;
-            continue;
-          }
-        }
-        dest_extra_alpha_scan++;
-        dest_scan += Bpp;
-      }
-    } else {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (m_bFullCover) {
-          if (clip_scan) {
-            src_alpha = m_Alpha * clip_scan[col] / 255;
-          } else {
-            src_alpha = m_Alpha;
-          }
-        } else {
-          if (clip_scan) {
-            src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-          } else {
-            src_alpha = m_Alpha * cover_scan[col] / 255;
-          }
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            if (Bpp == 4) {
-              *(uint32_t*)dest_scan = m_Color;
-            } else if (Bpp == 3) {
-              *dest_scan++ = m_Blue;
-              *dest_scan++ = m_Green;
-              *dest_scan++ = m_Red;
-              continue;
-            }
-          } else {
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha);
-            dest_scan += Bpp - 2;
-            continue;
-          }
-        }
-        dest_scan += Bpp;
-      }
-    }
-  }
-
-  void CompositeSpanCMYK(uint8_t* dest_scan,
-                         int Bpp,
-                         int span_left,
-                         int span_len,
-                         uint8_t* cover_scan,
-                         int clip_left,
-                         int clip_right,
-                         uint8_t* clip_scan,
-                         uint8_t* dest_extra_alpha_scan) {
-    ASSERT(!m_bRgbByteOrder);
-    int col_start = span_left < clip_left ? clip_left - span_left : 0;
-    int col_end = (span_left + span_len) < clip_right
-                      ? span_len
-                      : (clip_right - span_left);
-    dest_scan += col_start * 4;
-    if (dest_extra_alpha_scan) {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (m_bFullCover) {
-          if (clip_scan) {
-            src_alpha = m_Alpha * clip_scan[col] / 255;
-          } else {
-            src_alpha = m_Alpha;
-          }
-        } else {
-          if (clip_scan) {
-            src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-          } else {
-            src_alpha = m_Alpha * cover_scan[col] / 255;
-          }
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            *(FX_CMYK*)dest_scan = m_Color;
-            *dest_extra_alpha_scan = (uint8_t)m_Alpha;
-          } else {
-            uint8_t dest_alpha = (*dest_extra_alpha_scan) + src_alpha -
-                                 (*dest_extra_alpha_scan) * src_alpha / 255;
-            *dest_extra_alpha_scan++ = dest_alpha;
-            int alpha_ratio = src_alpha * 255 / dest_alpha;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, alpha_ratio);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, alpha_ratio);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, alpha_ratio);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, alpha_ratio);
-            dest_scan++;
-            continue;
-          }
-        }
-        dest_extra_alpha_scan++;
-        dest_scan += 4;
-      }
-    } else {
-      for (int col = col_start; col < col_end; col++) {
-        int src_alpha;
-        if (clip_scan) {
-          src_alpha = m_Alpha * cover_scan[col] * clip_scan[col] / 255 / 255;
-        } else {
-          src_alpha = m_Alpha * cover_scan[col] / 255;
-        }
-        if (src_alpha) {
-          if (src_alpha == 255) {
-            *(FX_CMYK*)dest_scan = m_Color;
-          } else {
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Red, src_alpha);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Green, src_alpha);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Blue, src_alpha);
-            dest_scan++;
-            *dest_scan = FXDIB_ALPHA_MERGE(*dest_scan, m_Gray, src_alpha);
-            dest_scan++;
-            continue;
-          }
-        }
-        dest_scan += 4;
-      }
-    }
-  }
-
-  template <class Scanline>
-  void render(const Scanline& sl) {
-    if (!m_pOriDevice && !composite_span) {
-      return;
-    }
-    int y = sl.y();
-    if (y < m_ClipBox.top || y >= m_ClipBox.bottom) {
-      return;
-    }
-    uint8_t* dest_scan = m_pDevice->GetBuffer() + m_pDevice->GetPitch() * y;
-    uint8_t* dest_scan_extra_alpha = nullptr;
-    CFX_RetainPtr<CFX_DIBitmap> pAlphaMask = m_pDevice->m_pAlphaMask;
-    if (pAlphaMask) {
-      dest_scan_extra_alpha =
-          pAlphaMask->GetBuffer() + pAlphaMask->GetPitch() * y;
-    }
-    uint8_t* ori_scan = nullptr;
-    if (m_pOriDevice) {
-      ori_scan = m_pOriDevice->GetBuffer() + m_pOriDevice->GetPitch() * y;
-    }
-    int Bpp = m_pDevice->GetBPP() / 8;
-    bool bDestAlpha = m_pDevice->HasAlpha() || m_pDevice->IsAlphaMask();
-    unsigned num_spans = sl.num_spans();
-    typename Scanline::const_iterator span = sl.begin();
-    while (1) {
-      int x = span->x;
-      ASSERT(span->len > 0);
-      uint8_t* dest_pos = nullptr;
-      uint8_t* dest_extra_alpha_pos = nullptr;
-      uint8_t* ori_pos = nullptr;
-      if (Bpp) {
-        ori_pos = ori_scan ? ori_scan + x * Bpp : nullptr;
-        dest_pos = dest_scan + x * Bpp;
-        dest_extra_alpha_pos =
-            dest_scan_extra_alpha ? dest_scan_extra_alpha + x : nullptr;
-      } else {
-        dest_pos = dest_scan + x / 8;
-        ori_pos = ori_scan ? ori_scan + x / 8 : nullptr;
-      }
-      uint8_t* clip_pos = nullptr;
-      if (m_pClipMask) {
-        clip_pos = m_pClipMask->GetBuffer() +
-                   (y - m_ClipBox.top) * m_pClipMask->GetPitch() + x -
-                   m_ClipBox.left;
-      }
-      if (ori_pos) {
-        CompositeSpan(dest_pos, ori_pos, Bpp, bDestAlpha, x, span->len,
-                      span->covers, m_ClipBox.left, m_ClipBox.right, clip_pos);
-      } else {
-        (this->*composite_span)(dest_pos, Bpp, x, span->len, span->covers,
-                                m_ClipBox.left, m_ClipBox.right, clip_pos,
-                                dest_extra_alpha_pos);
-      }
-      if (--num_spans == 0) {
-        break;
-      }
-      ++span;
-    }
-  }
-
-  bool Init(const CFX_RetainPtr<CFX_DIBitmap>& pDevice,
-            const CFX_RetainPtr<CFX_DIBitmap>& pOriDevice,
-            const CFX_ClipRgn* pClipRgn,
-            uint32_t color,
-            bool bFullCover,
-            bool bRgbByteOrder,
-            int alpha_flag = 0,
-            void* pIccTransform = nullptr) {
-    m_pDevice = pDevice;
-    m_pClipRgn = pClipRgn;
-    composite_span = nullptr;
-    m_bRgbByteOrder = bRgbByteOrder;
-    m_pOriDevice = pOriDevice;
-    if (m_pClipRgn) {
-      m_ClipBox = m_pClipRgn->GetBox();
-    } else {
-      m_ClipBox.left = m_ClipBox.top = 0;
-      m_ClipBox.right = m_pDevice->GetWidth();
-      m_ClipBox.bottom = m_pDevice->GetHeight();
-    }
-    m_pClipMask = nullptr;
-    if (m_pClipRgn && m_pClipRgn->GetType() == CFX_ClipRgn::MaskF) {
-      m_pClipMask = m_pClipRgn->GetMask();
-    }
-    m_bFullCover = bFullCover;
-    bool bObjectCMYK = !!FXGETFLAG_COLORTYPE(alpha_flag);
-    bool bDeviceCMYK = pDevice->IsCmykImage();
-    m_Alpha = bObjectCMYK ? FXGETFLAG_ALPHA_FILL(alpha_flag) : FXARGB_A(color);
-    CCodec_IccModule* pIccModule = nullptr;
-    if (!CFX_GEModule::Get()->GetCodecModule() ||
-        !CFX_GEModule::Get()->GetCodecModule()->GetIccModule()) {
-      pIccTransform = nullptr;
-    } else {
-      pIccModule = CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
-    }
-    if (m_pDevice->GetBPP() == 8) {
-      ASSERT(!m_bRgbByteOrder);
-      composite_span = &CFX_Renderer::CompositeSpanGray;
-      if (m_pDevice->IsAlphaMask()) {
-        m_Gray = 255;
-      } else {
-        if (pIccTransform) {
-          uint8_t gray;
-          color = bObjectCMYK ? FXCMYK_TODIB(color) : FXARGB_TODIB(color);
-          pIccModule->TranslateScanline(pIccTransform, &gray,
-                                        (const uint8_t*)&color, 1);
-          m_Gray = gray;
-        } else {
-          if (bObjectCMYK) {
-            uint8_t r, g, b;
-            AdobeCMYK_to_sRGB1(FXSYS_GetCValue(color), FXSYS_GetMValue(color),
-                               FXSYS_GetYValue(color), FXSYS_GetKValue(color),
-                               r, g, b);
-            m_Gray = FXRGB2GRAY(r, g, b);
-          } else {
-            m_Gray =
-                FXRGB2GRAY(FXARGB_R(color), FXARGB_G(color), FXARGB_B(color));
-          }
-        }
-      }
-      return true;
-    }
-    if (bDeviceCMYK) {
-      ASSERT(!m_bRgbByteOrder);
-      composite_span = &CFX_Renderer::CompositeSpanCMYK;
-      if (bObjectCMYK) {
-        m_Color = FXCMYK_TODIB(color);
-        if (pIccTransform) {
-          pIccModule->TranslateScanline(pIccTransform, (uint8_t*)&m_Color,
-                                        (const uint8_t*)&m_Color, 1);
-        }
-      } else {
-        if (!pIccTransform) {
-          return false;
-        }
-        color = FXARGB_TODIB(color);
-        pIccModule->TranslateScanline(pIccTransform, (uint8_t*)&m_Color,
-                                      (const uint8_t*)&color, 1);
-      }
-      m_Red = ((uint8_t*)&m_Color)[0];
-      m_Green = ((uint8_t*)&m_Color)[1];
-      m_Blue = ((uint8_t*)&m_Color)[2];
-      m_Gray = ((uint8_t*)&m_Color)[3];
-    } else {
-      composite_span = (pDevice->GetFormat() == FXDIB_Argb)
-                           ? &CFX_Renderer::CompositeSpanARGB
-                           : &CFX_Renderer::CompositeSpanRGB;
-      if (pIccTransform) {
-        color = bObjectCMYK ? FXCMYK_TODIB(color) : FXARGB_TODIB(color);
-        pIccModule->TranslateScanline(pIccTransform, (uint8_t*)&m_Color,
-                                      (const uint8_t*)&color, 1);
-        ((uint8_t*)&m_Color)[3] = m_Alpha;
-        m_Red = ((uint8_t*)&m_Color)[2];
-        m_Green = ((uint8_t*)&m_Color)[1];
-        m_Blue = ((uint8_t*)&m_Color)[0];
-        if (m_bRgbByteOrder) {
-          m_Color = FXARGB_TODIB(m_Color);
-          m_Color = FXARGB_TOBGRORDERDIB(m_Color);
-        }
-      } else {
-        if (bObjectCMYK) {
-          uint8_t r, g, b;
-          AdobeCMYK_to_sRGB1(FXSYS_GetCValue(color), FXSYS_GetMValue(color),
-                             FXSYS_GetYValue(color), FXSYS_GetKValue(color), r,
-                             g, b);
-          m_Color = FXARGB_MAKE(m_Alpha, r, g, b);
-          if (m_bRgbByteOrder) {
-            m_Color = FXARGB_TOBGRORDERDIB(m_Color);
-          } else {
-            m_Color = FXARGB_TODIB(m_Color);
-          }
-          m_Red = r;
-          m_Green = g;
-          m_Blue = b;
-        } else {
-          if (m_bRgbByteOrder) {
-            m_Color = FXARGB_TOBGRORDERDIB(color);
-          } else {
-            m_Color = FXARGB_TODIB(color);
-          }
-          ArgbDecode(color, m_Alpha, m_Red, m_Green, m_Blue);
-        }
-      }
-    }
-    if (m_pDevice->GetBPP() == 1) {
-      composite_span = &CFX_Renderer::CompositeSpan1bpp;
-    }
-    return true;
-  }
-};
-
-#endif  // _SKIA_SUPPORT_PATHS_