Remove dib_int.h

This CL removes dib_int.h by moving CStretchEngine to its own file, other
classes to where they are used, and the remaining to fx_dib.h.

Change-Id: Ie2d4bb39389737cd631f92b88000ea942608da21
Reviewed-on: https://pdfium-review.googlesource.com/3714
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Nicolás Peña <npm@chromium.org>

11 files changed, 126 insertions, 144 deletions

diff --git a/core/fxge/dib/cfx_bitmapstorer.cpp b/core/fxge/dib/cfx_bitmapstorer.cpp
index 4e1cb3bc38..1e09708098 100644
--- a/core/fxge/dib/cfx_bitmapstorer.cpp
+++ b/core/fxge/dib/cfx_bitmapstorer.cpp
@@ -8,7 +8,6 @@
 
 #include <utility>
 
-#include "core/fxge/dib/dib_int.h"
 #include "third_party/base/ptr_util.h"
 
 CFX_BitmapStorer::CFX_BitmapStorer() {}
diff --git a/core/fxge/dib/cfx_dibitmap.cpp b/core/fxge/dib/cfx_dibitmap.cpp
index 6292a67870..54977a6d23 100644
--- a/core/fxge/dib/cfx_dibitmap.cpp
+++ b/core/fxge/dib/cfx_dibitmap.cpp
@@ -13,7 +13,6 @@
 #include "core/fxcodec/fx_codec.h"
 #include "core/fxge/cfx_gemodule.h"
 #include "core/fxge/dib/cfx_scanlinecompositor.h"
-#include "core/fxge/dib/dib_int.h"
 #include "core/fxge/ge/cfx_cliprgn.h"
 #include "third_party/base/ptr_util.h"
 
diff --git a/core/fxge/dib/cfx_imagerenderer.cpp b/core/fxge/dib/cfx_imagerenderer.cpp
index 89eb48f0cb..42c92eda06 100644
--- a/core/fxge/dib/cfx_imagerenderer.cpp
+++ b/core/fxge/dib/cfx_imagerenderer.cpp
@@ -10,7 +10,6 @@
 
 #include "core/fxge/dib/cfx_imagestretcher.h"
 #include "core/fxge/dib/cfx_imagetransformer.h"
-#include "core/fxge/dib/dib_int.h"
 #include "core/fxge/ge/cfx_cliprgn.h"
 #include "third_party/base/ptr_util.h"
 
diff --git a/core/fxge/dib/cfx_imagestretcher.cpp b/core/fxge/dib/cfx_imagestretcher.cpp
index 94c107b4a3..f52a62d529 100644
--- a/core/fxge/dib/cfx_imagestretcher.cpp
+++ b/core/fxge/dib/cfx_imagestretcher.cpp
@@ -10,7 +10,7 @@
 
 #include "core/fxge/dib/cfx_dibitmap.h"
 #include "core/fxge/dib/cfx_dibsource.h"
-#include "core/fxge/dib/dib_int.h"
+#include "core/fxge/dib/cstretchengine.h"
 #include "core/fxge/fx_dib.h"
 #include "third_party/base/ptr_util.h"
 
diff --git a/core/fxge/dib/cfx_imagetransformer.cpp b/core/fxge/dib/cfx_imagetransformer.cpp
index 65f6bc8ec9..c5fb467ad8 100644
--- a/core/fxge/dib/cfx_imagetransformer.cpp
+++ b/core/fxge/dib/cfx_imagetransformer.cpp
@@ -115,6 +115,32 @@ FXDIB_Format GetTransformedFormat(const CFX_RetainPtr<CFX_DIBSource>& pDrc) {
   return format;
 }
 
+class CPDF_FixedMatrix {
+ public:
+  CPDF_FixedMatrix(const CFX_Matrix& src, int bits) {
+    base = 1 << bits;
+    a = FXSYS_round(src.a * base);
+    b = FXSYS_round(src.b * base);
+    c = FXSYS_round(src.c * base);
+    d = FXSYS_round(src.d * base);
+    e = FXSYS_round(src.e * base);
+    f = FXSYS_round(src.f * base);
+  }
+
+  inline void Transform(int x, int y, int& x1, int& y1) {
+    x1 = (a * x + c * y + e + base / 2) / base;
+    y1 = (b * x + d * y + f + base / 2) / base;
+  }
+
+  int a;
+  int b;
+  int c;
+  int d;
+  int e;
+  int f;
+  int base;
+};
+
 class CFX_BilinearMatrix : public CPDF_FixedMatrix {
  public:
   CFX_BilinearMatrix(const CFX_Matrix& src, int bits)
diff --git a/core/fxge/dib/cfx_imagetransformer.h b/core/fxge/dib/cfx_imagetransformer.h
index 1354c9099a..52aca9792e 100644
--- a/core/fxge/dib/cfx_imagetransformer.h
+++ b/core/fxge/dib/cfx_imagetransformer.h
@@ -14,7 +14,6 @@
 #include "core/fxge/dib/cfx_bitmapstorer.h"
 #include "core/fxge/dib/cfx_dibitmap.h"
 #include "core/fxge/dib/cfx_dibsource.h"
-#include "core/fxge/dib/dib_int.h"
 
 class CFX_ImageStretcher;
 
diff --git a/core/fxge/dib/fx_dib_engine.cpp b/core/fxge/dib/cstretchengine.cpp
index 3ae0bf9031..0025331486 100644
--- a/core/fxge/dib/fx_dib_engine.cpp
+++ b/core/fxge/dib/cstretchengine.cpp
@@ -1,42 +1,37 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
+// 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
 
-#include <limits.h>
-
-#include <algorithm>
+#include "core/fxge/dib/cstretchengine.h"
 
 #include "core/fxge/dib/cfx_dibitmap.h"
 #include "core/fxge/dib/cfx_dibsource.h"
-#include "core/fxge/dib/dib_int.h"
 #include "core/fxge/dib/ifx_scanlinecomposer.h"
 #include "core/fxge/fx_dib.h"
-#include "third_party/base/ptr_util.h"
-#include "third_party/base/stl_util.h"
 
-CWeightTable::CWeightTable()
+CStretchEngine::CWeightTable::CWeightTable()
     : m_DestMin(0),
       m_ItemSize(0),
       m_pWeightTables(nullptr),
       m_dwWeightTablesSize(0) {}
 
-CWeightTable::~CWeightTable() {
+CStretchEngine::CWeightTable::~CWeightTable() {
   FX_Free(m_pWeightTables);
 }
 
-size_t CWeightTable::GetPixelWeightSize() const {
+size_t CStretchEngine::CWeightTable::GetPixelWeightSize() const {
   return m_ItemSize / sizeof(int) - 2;
 }
 
-bool CWeightTable::Calc(int dest_len,
-                        int dest_min,
-                        int dest_max,
-                        int src_len,
-                        int src_min,
-                        int src_max,
-                        int flags) {
+bool CStretchEngine::CWeightTable::Calc(int dest_len,
+                                        int dest_min,
+                                        int dest_max,
+                                        int src_len,
+                                        int src_min,
+                                        int src_max,
+                                        int flags) {
   FX_Free(m_pWeightTables);
   m_pWeightTables = nullptr;
   m_dwWeightTablesSize = 0;
@@ -227,14 +222,14 @@ bool CWeightTable::Calc(int dest_len,
   return true;
 }
 
-PixelWeight* CWeightTable::GetPixelWeight(int pixel) const {
+PixelWeight* CStretchEngine::CWeightTable::GetPixelWeight(int pixel) const {
   ASSERT(pixel >= m_DestMin);
   return reinterpret_cast<PixelWeight*>(m_pWeightTables +
                                         (pixel - m_DestMin) * m_ItemSize);
 }
 
-int* CWeightTable::GetValueFromPixelWeight(PixelWeight* pWeight,
-                                           int index) const {
+int* CStretchEngine::CWeightTable::GetValueFromPixelWeight(PixelWeight* pWeight,
+                                                           int index) const {
   if (index < pWeight->m_SrcStart)
     return nullptr;
 
diff --git a/core/fxge/dib/cstretchengine.h b/core/fxge/dib/cstretchengine.h
new file mode 100644
index 0000000000..0d9457fb9d
--- /dev/null
+++ b/core/fxge/dib/cstretchengine.h
@@ -0,0 +1,81 @@
+// 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_CSTRETCHENGINE_H_
+#define CORE_FXGE_DIB_CSTRETCHENGINE_H_
+
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxge/fx_dib.h"
+
+class IFX_ScanlineComposer;
+
+class CStretchEngine {
+ public:
+  CStretchEngine(IFX_ScanlineComposer* pDestBitmap,
+                 FXDIB_Format dest_format,
+                 int dest_width,
+                 int dest_height,
+                 const FX_RECT& clip_rect,
+                 const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
+                 int flags);
+  ~CStretchEngine();
+
+  bool Continue(IFX_Pause* pPause);
+
+  bool StartStretchHorz();
+  bool ContinueStretchHorz(IFX_Pause* pPause);
+  void StretchVert();
+
+  class CWeightTable {
+   public:
+    CWeightTable();
+    ~CWeightTable();
+
+    bool Calc(int dest_len,
+              int dest_min,
+              int dest_max,
+              int src_len,
+              int src_min,
+              int src_max,
+              int flags);
+    PixelWeight* GetPixelWeight(int pixel) const;
+    int* GetValueFromPixelWeight(PixelWeight* pWeight, int index) const;
+    size_t GetPixelWeightSize() const;
+
+   private:
+    int m_DestMin;
+    int m_ItemSize;
+    uint8_t* m_pWeightTables;
+    size_t m_dwWeightTablesSize;
+  };
+
+  FXDIB_Format m_DestFormat;
+  int m_DestBpp;
+  int m_SrcBpp;
+  int m_bHasAlpha;
+  IFX_ScanlineComposer* m_pDestBitmap;
+  int m_DestWidth, m_DestHeight;
+  FX_RECT m_DestClip;
+  uint8_t* m_pDestScanline;
+  uint8_t* m_pDestMaskScanline;
+  FX_RECT m_SrcClip;
+  CFX_RetainPtr<CFX_DIBSource> m_pSource;
+  uint32_t* m_pSrcPalette;
+  int m_SrcWidth;
+  int m_SrcHeight;
+  int m_SrcPitch;
+  int m_InterPitch;
+  int m_ExtraMaskPitch;
+  uint8_t* m_pInterBuf;
+  uint8_t* m_pExtraAlphaBuf;
+  int m_TransMethod;
+  int m_Flags;
+  CWeightTable m_WeightTable;
+  int m_CurRow;
+  int m_State;
+};
+
+#endif  // CORE_FXGE_DIB_CSTRETCHENGINE_H_
diff --git a/core/fxge/dib/fx_dib_engine_unittest.cpp b/core/fxge/dib/cstretchengine_unittest.cpp
index 86df82442f..2c7e0342de 100644
--- a/core/fxge/dib/fx_dib_engine_unittest.cpp
+++ b/core/fxge/dib/cstretchengine_unittest.cpp
@@ -1,7 +1,9 @@
-// Copyright 2016 PDFium Authors. All rights reserved.
+// 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.
 
+#include "core/fxge/dib/cstretchengine.h"
+
 #include <memory>
 #include <utility>
 
@@ -10,7 +12,6 @@
 #include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fpdfapi/render/cpdf_dibsource.h"
 #include "core/fxcrt/fx_memory.h"
-#include "core/fxge/dib/dib_int.h"
 #include "core/fxge/fx_dib.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/base/ptr_util.h"
diff --git a/core/fxge/dib/dib_int.h b/core/fxge/dib/dib_int.h
deleted file mode 100644
index a898a479a2..0000000000
--- a/core/fxge/dib/dib_int.h
+++ /dev/null
@@ -1,116 +0,0 @@
-// 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_DIB_DIB_INT_H_
-#define CORE_FXGE_DIB_DIB_INT_H_
-
-#include <stdint.h>
-
-#include "core/fxcrt/fx_coordinates.h"
-#include "core/fxge/fx_dib.h"
-
-class IFX_ScanlineComposer;
-
-extern const int16_t SDP_Table[513];
-
-class CPDF_FixedMatrix {
- public:
-  CPDF_FixedMatrix(const CFX_Matrix& src, int bits) {
-    base = 1 << bits;
-    a = FXSYS_round(src.a * base);
-    b = FXSYS_round(src.b * base);
-    c = FXSYS_round(src.c * base);
-    d = FXSYS_round(src.d * base);
-    e = FXSYS_round(src.e * base);
-    f = FXSYS_round(src.f * base);
-  }
-  inline void Transform(int x, int y, int& x1, int& y1) {
-    x1 = (a * x + c * y + e + base / 2) / base;
-    y1 = (b * x + d * y + f + base / 2) / base;
-  }
-  int a, b, c, d, e, f;
-  int base;
-};
-#define FPDF_HUGE_IMAGE_SIZE 60000000
-struct PixelWeight {
-  int m_SrcStart;
-  int m_SrcEnd;
-  int m_Weights[1];
-};
-
-class CWeightTable {
- public:
-  CWeightTable();
-  ~CWeightTable();
-
-  bool Calc(int dest_len,
-            int dest_min,
-            int dest_max,
-            int src_len,
-            int src_min,
-            int src_max,
-            int flags);
-  PixelWeight* GetPixelWeight(int pixel) const;
-  int* GetValueFromPixelWeight(PixelWeight* pWeight, int index) const;
-  size_t GetPixelWeightSize() const;
-
- private:
-  int m_DestMin;
-  int m_ItemSize;
-  uint8_t* m_pWeightTables;
-  size_t m_dwWeightTablesSize;
-};
-
-class CStretchEngine {
- public:
-  CStretchEngine(IFX_ScanlineComposer* pDestBitmap,
-                 FXDIB_Format dest_format,
-                 int dest_width,
-                 int dest_height,
-                 const FX_RECT& clip_rect,
-                 const CFX_RetainPtr<CFX_DIBSource>& pSrcBitmap,
-                 int flags);
-  ~CStretchEngine();
-
-  bool Continue(IFX_Pause* pPause);
-
-  bool StartStretchHorz();
-  bool ContinueStretchHorz(IFX_Pause* pPause);
-  void StretchVert();
-
-  FXDIB_Format m_DestFormat;
-  int m_DestBpp;
-  int m_SrcBpp;
-  int m_bHasAlpha;
-  IFX_ScanlineComposer* m_pDestBitmap;
-  int m_DestWidth, m_DestHeight;
-  FX_RECT m_DestClip;
-  uint8_t* m_pDestScanline;
-  uint8_t* m_pDestMaskScanline;
-  FX_RECT m_SrcClip;
-  CFX_RetainPtr<CFX_DIBSource> m_pSource;
-  uint32_t* m_pSrcPalette;
-  int m_SrcWidth;
-  int m_SrcHeight;
-  int m_SrcPitch;
-  int m_InterPitch;
-  int m_ExtraMaskPitch;
-  uint8_t* m_pInterBuf;
-  uint8_t* m_pExtraAlphaBuf;
-  int m_TransMethod;
-  int m_Flags;
-  CWeightTable m_WeightTable;
-  int m_CurRow;
-  int m_State;
-};
-
-FX_RECT FXDIB_SwapClipBox(FX_RECT& clip,
-                          int width,
-                          int height,
-                          bool bFlipX,
-                          bool bFlipY);
-
-#endif  // CORE_FXGE_DIB_DIB_INT_H_
diff --git a/core/fxge/dib/fx_dib_main.cpp b/core/fxge/dib/fx_dib_main.cpp
index 68668b92bc..97b1aa7cca 100644
--- a/core/fxge/dib/fx_dib_main.cpp
+++ b/core/fxge/dib/fx_dib_main.cpp
@@ -8,7 +8,6 @@
 
 #include <utility>
 
-#include "core/fxge/dib/dib_int.h"
 #include "third_party/base/ptr_util.h"
 
 const int16_t SDP_Table[513] = {