clang-format all code

core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp

 // 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
 
 #include "../../../include/fpdfapi/fpdf_page.h"
 #include "pageint.h"
 
-CPDF_Pattern::CPDF_Pattern(const CFX_AffineMatrix* pParentMatrix) :
-    m_pPatternObj(NULL), m_PatternType(PATTERN_TILING), m_pDocument(NULL), m_pColor(NULL)
-{
-    if (pParentMatrix) {
-        m_ParentMatrix = *pParentMatrix;
-    }
+CPDF_Pattern::CPDF_Pattern(const CFX_AffineMatrix* pParentMatrix)
+    : m_pPatternObj(NULL),
+      m_PatternType(PATTERN_TILING),
+      m_pDocument(NULL),
+      m_pColor(NULL) {
+  if (pParentMatrix) {
+    m_ParentMatrix = *pParentMatrix;
+  }
 }
 
-CPDF_Pattern::~CPDF_Pattern()
-{
-    if (m_pColor) {
-        m_pColor->SetValue(NULL, NULL, 0);
-        m_pColor = NULL;
-    }
-}
-CPDF_TilingPattern::CPDF_TilingPattern(CPDF_Document* pDoc, CPDF_Object* pPatternObj, const CFX_AffineMatrix* parentMatrix) :
-    CPDF_Pattern(parentMatrix)
-{
-    m_PatternType = PATTERN_TILING;
-    m_pPatternObj = pPatternObj;
-    m_pDocument = pDoc;
+CPDF_Pattern::~CPDF_Pattern() {
+  if (m_pColor) {
+    m_pColor->SetValue(NULL, NULL, 0);
+    m_pColor = NULL;
+  }
+}
+CPDF_TilingPattern::CPDF_TilingPattern(CPDF_Document* pDoc,
+                                       CPDF_Object* pPatternObj,
+                                       const CFX_AffineMatrix* parentMatrix)
+    : CPDF_Pattern(parentMatrix) {
+  m_PatternType = PATTERN_TILING;
+  m_pPatternObj = pPatternObj;
+  m_pDocument = pDoc;
+  CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
+  ASSERT(pDict != NULL);
+  m_Pattern2Form = pDict->GetMatrix(FX_BSTRC("Matrix"));
+  m_bColored = pDict->GetInteger(FX_BSTRC("PaintType")) == 1;
+  if (parentMatrix) {
+    m_Pattern2Form.Concat(*parentMatrix);
+  }
+  m_pForm = NULL;
+}
+CPDF_TilingPattern::~CPDF_TilingPattern() {
+  if (m_pForm) {
+    delete m_pForm;
+    m_pForm = NULL;
+  }
+}
+FX_BOOL CPDF_TilingPattern::Load() {
+  if (m_pForm != NULL) {
+    return TRUE;
+  }
+  CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
+  if (pDict == NULL) {
+    return FALSE;
+  }
+  m_bColored = pDict->GetInteger(FX_BSTRC("PaintType")) == 1;
+  m_XStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumber(FX_BSTRC("XStep")));
+  m_YStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumber(FX_BSTRC("YStep")));
+  if (m_pPatternObj->GetType() != PDFOBJ_STREAM) {
+    return FALSE;
+  }
+  CPDF_Stream* pStream = (CPDF_Stream*)m_pPatternObj;
+  m_pForm = FX_NEW CPDF_Form(m_pDocument, NULL, pStream);
+  m_pForm->ParseContent(NULL, &m_ParentMatrix, NULL, NULL);
+  m_BBox = pDict->GetRect(FX_BSTRC("BBox"));
+  return TRUE;
+}
+CPDF_ShadingPattern::CPDF_ShadingPattern(CPDF_Document* pDoc,
+                                         CPDF_Object* pPatternObj,
+                                         FX_BOOL bShading,
+                                         const CFX_AffineMatrix* parentMatrix)
+    : CPDF_Pattern(parentMatrix) {
+  m_PatternType = PATTERN_SHADING;
+  m_pPatternObj = bShading ? NULL : pPatternObj;
+  m_pDocument = pDoc;
+  m_bShadingObj = bShading;
+  if (!bShading) {
     CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
     ASSERT(pDict != NULL);
     m_Pattern2Form = pDict->GetMatrix(FX_BSTRC("Matrix"));
-    m_bColored = pDict->GetInteger(FX_BSTRC("PaintType")) == 1;
+    m_pShadingObj = pDict->GetElementValue(FX_BSTRC("Shading"));
     if (parentMatrix) {
-        m_Pattern2Form.Concat(*parentMatrix);
-    }
-    m_pForm = NULL;
-}
-CPDF_TilingPattern::~CPDF_TilingPattern()
-{
-    if (m_pForm) {
-        delete m_pForm;
-        m_pForm = NULL;
-    }
-}
-FX_BOOL CPDF_TilingPattern::Load()
-{
-    if (m_pForm != NULL) {
-        return TRUE;
-    }
-    CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
-    if (pDict == NULL) {
-        return FALSE;
-    }
-    m_bColored = pDict->GetInteger(FX_BSTRC("PaintType")) == 1;
-    m_XStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumber(FX_BSTRC("XStep")));
-    m_YStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumber(FX_BSTRC("YStep")));
-    if (m_pPatternObj->GetType() != PDFOBJ_STREAM) {
-        return FALSE;
-    }
-    CPDF_Stream* pStream = (CPDF_Stream*)m_pPatternObj;
-    m_pForm = FX_NEW CPDF_Form(m_pDocument, NULL, pStream);
-    m_pForm->ParseContent(NULL, &m_ParentMatrix, NULL, NULL);
-    m_BBox = pDict->GetRect(FX_BSTRC("BBox"));
+      m_Pattern2Form.Concat(*parentMatrix);
+    }
+  } else {
+    m_pShadingObj = pPatternObj;
+  }
+  m_ShadingType = 0;
+  m_pCS = NULL;
+  m_nFuncs = 0;
+  for (int i = 0; i < 4; i++) {
+    m_pFunctions[i] = NULL;
+  }
+}
+CPDF_ShadingPattern::~CPDF_ShadingPattern() {
+  Clear();
+}
+void CPDF_ShadingPattern::Clear() {
+  for (int i = 0; i < m_nFuncs; i++) {
+    if (m_pFunctions[i]) {
+      delete m_pFunctions[i];
+    }
+    m_pFunctions[i] = NULL;
+  }
+  CPDF_ColorSpace* pCS = m_pCS;
+  if (pCS && m_pDocument) {
+    m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
+  }
+  m_ShadingType = 0;
+  m_pCS = NULL;
+  m_nFuncs = 0;
+}
+FX_BOOL CPDF_ShadingPattern::Load() {
+  if (m_ShadingType != 0) {
     return TRUE;
-}
-CPDF_ShadingPattern::CPDF_ShadingPattern(CPDF_Document* pDoc, CPDF_Object* pPatternObj, FX_BOOL bShading, const CFX_AffineMatrix* parentMatrix) : CPDF_Pattern(parentMatrix)
-{
-    m_PatternType = PATTERN_SHADING;
-    m_pPatternObj = bShading ? NULL : pPatternObj;
-    m_pDocument = pDoc;
-    m_bShadingObj = bShading;
-    if (!bShading) {
-        CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
-        ASSERT(pDict != NULL);
-        m_Pattern2Form = pDict->GetMatrix(FX_BSTRC("Matrix"));
-        m_pShadingObj = pDict->GetElementValue(FX_BSTRC("Shading"));
-        if (parentMatrix) {
-            m_Pattern2Form.Concat(*parentMatrix);
-        }
+  }
+  CPDF_Dictionary* pShadingDict =
+      m_pShadingObj ? m_pShadingObj->GetDict() : NULL;
+  if (pShadingDict == NULL) {
+    return FALSE;
+  }
+  if (m_nFuncs) {
+    for (int i = 0; i < m_nFuncs; i++)
+      if (m_pFunctions[i]) {
+        delete m_pFunctions[i];
+      }
+    m_nFuncs = 0;
+  }
+  CPDF_Object* pFunc = pShadingDict->GetElementValue(FX_BSTRC("Function"));
+  if (pFunc) {
+    if (pFunc->GetType() == PDFOBJ_ARRAY) {
+      m_nFuncs = ((CPDF_Array*)pFunc)->GetCount();
+      if (m_nFuncs > 4) {
+        m_nFuncs = 4;
+      }
+      for (int i = 0; i < m_nFuncs; i++) {
+        m_pFunctions[i] =
+            CPDF_Function::Load(((CPDF_Array*)pFunc)->GetElementValue(i));
+      }
     } else {
-        m_pShadingObj = pPatternObj;
-    }
-    m_ShadingType = 0;
-    m_pCS = NULL;
-    m_nFuncs = 0;
-    for (int i = 0; i < 4; i ++) {
-        m_pFunctions[i] = NULL;
-    }
-}
-CPDF_ShadingPattern::~CPDF_ShadingPattern()
-{
-    Clear();
-}
-void CPDF_ShadingPattern::Clear()
-{
-    for (int i = 0; i < m_nFuncs; i ++) {
-        if (m_pFunctions[i]) {
-            delete m_pFunctions[i];
-        }
-        m_pFunctions[i] = NULL;
-    }
-    CPDF_ColorSpace* pCS = m_pCS;
-    if (pCS && m_pDocument) {
-        m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
-    }
-    m_ShadingType = 0;
-    m_pCS = NULL;
-    m_nFuncs = 0;
-}
-FX_BOOL CPDF_ShadingPattern::Load()
-{
-    if (m_ShadingType != 0) {
-        return TRUE;
-    }
-    CPDF_Dictionary* pShadingDict = m_pShadingObj ? m_pShadingObj->GetDict() : NULL;
-    if (pShadingDict == NULL) {
-        return FALSE;
-    }
-    if (m_nFuncs) {
-        for (int i = 0; i < m_nFuncs; i ++)
-            if (m_pFunctions[i]) {
-                delete m_pFunctions[i];
-            }
-        m_nFuncs = 0;
-    }
-    CPDF_Object* pFunc = pShadingDict->GetElementValue(FX_BSTRC("Function"));
-    if (pFunc) {
-        if (pFunc->GetType() == PDFOBJ_ARRAY) {
-            m_nFuncs = ((CPDF_Array*)pFunc)->GetCount();
-            if (m_nFuncs > 4) {
-                m_nFuncs = 4;
-            }
-            for (int i = 0; i < m_nFuncs; i ++) {
-                m_pFunctions[i] = CPDF_Function::Load(((CPDF_Array*)pFunc)->GetElementValue(i));
-            }
-        } else {
-            m_pFunctions[0] = CPDF_Function::Load(pFunc);
-            m_nFuncs = 1;
-        }
-    }
-    CPDF_Object* pCSObj = pShadingDict->GetElementValue(FX_BSTRC("ColorSpace"));
-    if (pCSObj == NULL) {
-        return FALSE;
-    }
-    CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData();
-    m_pCS = pDocPageData->GetColorSpace(pCSObj, NULL);
-    m_ShadingType = pShadingDict->GetInteger(FX_BSTRC("ShadingType"));
-    return TRUE;
-}
-FX_BOOL CPDF_ShadingPattern::Reload()
-{
-    Clear();
-    return Load();
-}
-FX_BOOL CPDF_MeshStream::Load(CPDF_Stream* pShadingStream, CPDF_Function** pFuncs, int nFuncs, CPDF_ColorSpace* pCS)
-{
-    m_Stream.LoadAllData(pShadingStream);
-    m_BitStream.Init(m_Stream.GetData(), m_Stream.GetSize());
-    m_pFuncs = pFuncs;
-    m_nFuncs = nFuncs;
-    m_pCS = pCS;
-    CPDF_Dictionary* pDict = pShadingStream->GetDict();
-    m_nCoordBits = pDict->GetInteger(FX_BSTRC("BitsPerCoordinate"));
-    m_nCompBits = pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
-    m_nFlagBits = pDict->GetInteger(FX_BSTRC("BitsPerFlag"));
-    if (!m_nCoordBits || !m_nCompBits) {
-        return FALSE;
-    }
-    int nComps = pCS->CountComponents();
-    if (nComps > 8) {
-        return FALSE;
-    }
-    m_nComps = nFuncs ? 1 : nComps;
-    if (((int)m_nComps < 0) || m_nComps > 8) {
-        return FALSE;
-    }
-    m_CoordMax = m_nCoordBits == 32 ? -1 : (1 << m_nCoordBits) - 1;
-    m_CompMax = (1 << m_nCompBits) - 1;
-    CPDF_Array* pDecode = pDict->GetArray(FX_BSTRC("Decode"));
-    if (pDecode == NULL || pDecode->GetCount() != 4 + m_nComps * 2) {
-        return FALSE;
-    }
-    m_xmin = pDecode->GetNumber(0);
-    m_xmax = pDecode->GetNumber(1);
-    m_ymin = pDecode->GetNumber(2);
-    m_ymax = pDecode->GetNumber(3);
-    for (FX_DWORD i = 0; i < m_nComps; i ++) {
-        m_ColorMin[i] = pDecode->GetNumber(i * 2 + 4);
-        m_ColorMax[i] = pDecode->GetNumber(i * 2 + 5);
-    }
-    return TRUE;
-}
-FX_DWORD CPDF_MeshStream::GetFlag()
-{
-    return m_BitStream.GetBits(m_nFlagBits) & 0x03;
-}
-void CPDF_MeshStream::GetCoords(FX_FLOAT& x, FX_FLOAT& y)
-{
-    if (m_nCoordBits == 32) {
-        x = m_xmin + (FX_FLOAT)(m_BitStream.GetBits(m_nCoordBits) * (m_xmax - m_xmin) / (double)m_CoordMax);
-        y = m_ymin + (FX_FLOAT)(m_BitStream.GetBits(m_nCoordBits) * (m_ymax - m_ymin) / (double)m_CoordMax);
-    } else {
-        x = m_xmin + m_BitStream.GetBits(m_nCoordBits) * (m_xmax - m_xmin) / m_CoordMax;
-        y = m_ymin + m_BitStream.GetBits(m_nCoordBits) * (m_ymax - m_ymin) / m_CoordMax;
-    }
-}
-void CPDF_MeshStream::GetColor(FX_FLOAT& r, FX_FLOAT& g, FX_FLOAT& b)
-{
-    FX_DWORD i;
-    FX_FLOAT color_value[8];
-    for (i = 0; i < m_nComps; i ++) {
-        color_value[i] = m_ColorMin[i] + m_BitStream.GetBits(m_nCompBits) * (m_ColorMax[i] - m_ColorMin[i]) / m_CompMax;
-    }
-    if (m_nFuncs) {
-        static const int kMaxResults = 8;
-        FX_FLOAT result[kMaxResults];
-        int nResults;
-        FXSYS_memset32(result, 0, sizeof(result));
-        for (FX_DWORD i = 0; i < m_nFuncs; i ++) {
-            if (m_pFuncs[i] && m_pFuncs[i]->CountOutputs() <= kMaxResults) {
-                m_pFuncs[i]->Call(color_value, 1, result, nResults);
-            }
-        }
-        m_pCS->GetRGB(result, r, g, b);
-    } else {
-        m_pCS->GetRGB(color_value, r, g, b);
-    }
-}
-FX_DWORD CPDF_MeshStream::GetVertex(CPDF_MeshVertex& vertex, CFX_AffineMatrix* pObject2Bitmap)
-{
-    FX_DWORD flag = GetFlag();
-    GetCoords(vertex.x, vertex.y);
-    pObject2Bitmap->Transform(vertex.x, vertex.y);
-    GetColor(vertex.r, vertex.g, vertex.b);
+      m_pFunctions[0] = CPDF_Function::Load(pFunc);
+      m_nFuncs = 1;
+    }
+  }
+  CPDF_Object* pCSObj = pShadingDict->GetElementValue(FX_BSTRC("ColorSpace"));
+  if (pCSObj == NULL) {
+    return FALSE;
+  }
+  CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData();
+  m_pCS = pDocPageData->GetColorSpace(pCSObj, NULL);
+  m_ShadingType = pShadingDict->GetInteger(FX_BSTRC("ShadingType"));
+  return TRUE;
+}
+FX_BOOL CPDF_ShadingPattern::Reload() {
+  Clear();
+  return Load();
+}
+FX_BOOL CPDF_MeshStream::Load(CPDF_Stream* pShadingStream,
+                              CPDF_Function** pFuncs,
+                              int nFuncs,
+                              CPDF_ColorSpace* pCS) {
+  m_Stream.LoadAllData(pShadingStream);
+  m_BitStream.Init(m_Stream.GetData(), m_Stream.GetSize());
+  m_pFuncs = pFuncs;
+  m_nFuncs = nFuncs;
+  m_pCS = pCS;
+  CPDF_Dictionary* pDict = pShadingStream->GetDict();
+  m_nCoordBits = pDict->GetInteger(FX_BSTRC("BitsPerCoordinate"));
+  m_nCompBits = pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
+  m_nFlagBits = pDict->GetInteger(FX_BSTRC("BitsPerFlag"));
+  if (!m_nCoordBits || !m_nCompBits) {
+    return FALSE;
+  }
+  int nComps = pCS->CountComponents();
+  if (nComps > 8) {
+    return FALSE;
+  }
+  m_nComps = nFuncs ? 1 : nComps;
+  if (((int)m_nComps < 0) || m_nComps > 8) {
+    return FALSE;
+  }
+  m_CoordMax = m_nCoordBits == 32 ? -1 : (1 << m_nCoordBits) - 1;
+  m_CompMax = (1 << m_nCompBits) - 1;
+  CPDF_Array* pDecode = pDict->GetArray(FX_BSTRC("Decode"));
+  if (pDecode == NULL || pDecode->GetCount() != 4 + m_nComps * 2) {
+    return FALSE;
+  }
+  m_xmin = pDecode->GetNumber(0);
+  m_xmax = pDecode->GetNumber(1);
+  m_ymin = pDecode->GetNumber(2);
+  m_ymax = pDecode->GetNumber(3);
+  for (FX_DWORD i = 0; i < m_nComps; i++) {
+    m_ColorMin[i] = pDecode->GetNumber(i * 2 + 4);
+    m_ColorMax[i] = pDecode->GetNumber(i * 2 + 5);
+  }
+  return TRUE;
+}
+FX_DWORD CPDF_MeshStream::GetFlag() {
+  return m_BitStream.GetBits(m_nFlagBits) & 0x03;
+}
+void CPDF_MeshStream::GetCoords(FX_FLOAT& x, FX_FLOAT& y) {
+  if (m_nCoordBits == 32) {
+    x = m_xmin + (FX_FLOAT)(m_BitStream.GetBits(m_nCoordBits) *
+                            (m_xmax - m_xmin) / (double)m_CoordMax);
+    y = m_ymin + (FX_FLOAT)(m_BitStream.GetBits(m_nCoordBits) *
+                            (m_ymax - m_ymin) / (double)m_CoordMax);
+  } else {
+    x = m_xmin +
+        m_BitStream.GetBits(m_nCoordBits) * (m_xmax - m_xmin) / m_CoordMax;
+    y = m_ymin +
+        m_BitStream.GetBits(m_nCoordBits) * (m_ymax - m_ymin) / m_CoordMax;
+  }
+}
+void CPDF_MeshStream::GetColor(FX_FLOAT& r, FX_FLOAT& g, FX_FLOAT& b) {
+  FX_DWORD i;
+  FX_FLOAT color_value[8];
+  for (i = 0; i < m_nComps; i++) {
+    color_value[i] = m_ColorMin[i] +
+                     m_BitStream.GetBits(m_nCompBits) *
+                         (m_ColorMax[i] - m_ColorMin[i]) / m_CompMax;
+  }
+  if (m_nFuncs) {
+    static const int kMaxResults = 8;
+    FX_FLOAT result[kMaxResults];
+    int nResults;
+    FXSYS_memset32(result, 0, sizeof(result));
+    for (FX_DWORD i = 0; i < m_nFuncs; i++) {
+      if (m_pFuncs[i] && m_pFuncs[i]->CountOutputs() <= kMaxResults) {
+        m_pFuncs[i]->Call(color_value, 1, result, nResults);
+      }
+    }
+    m_pCS->GetRGB(result, r, g, b);
+  } else {
+    m_pCS->GetRGB(color_value, r, g, b);
+  }
+}
+FX_DWORD CPDF_MeshStream::GetVertex(CPDF_MeshVertex& vertex,
+                                    CFX_AffineMatrix* pObject2Bitmap) {
+  FX_DWORD flag = GetFlag();
+  GetCoords(vertex.x, vertex.y);
+  pObject2Bitmap->Transform(vertex.x, vertex.y);
+  GetColor(vertex.r, vertex.g, vertex.b);
+  m_BitStream.ByteAlign();
+  return flag;
+}
+FX_BOOL CPDF_MeshStream::GetVertexRow(CPDF_MeshVertex* vertex,
+                                      int count,
+                                      CFX_AffineMatrix* pObject2Bitmap) {
+  for (int i = 0; i < count; i++) {
+    if (m_BitStream.IsEOF()) {
+      return FALSE;
+    }
+    GetCoords(vertex[i].x, vertex[i].y);
+    pObject2Bitmap->Transform(vertex[i].x, vertex[i].y);
+    GetColor(vertex[i].r, vertex[i].g, vertex[i].b);
     m_BitStream.ByteAlign();
-    return flag;
-}
-FX_BOOL CPDF_MeshStream::GetVertexRow(CPDF_MeshVertex* vertex, int count, CFX_AffineMatrix* pObject2Bitmap)
-{
-    for (int i = 0; i < count; i ++) {
-        if (m_BitStream.IsEOF()) {
-            return FALSE;
-        }
-        GetCoords(vertex[i].x, vertex[i].y);
-        pObject2Bitmap->Transform(vertex[i].x, vertex[i].y);
-        GetColor(vertex[i].r, vertex[i].g, vertex[i].b);
-        m_BitStream.ByteAlign();
-    }
-    return TRUE;
-}
-CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream, int type, const CFX_AffineMatrix* pMatrix,
-                              CPDF_Function** pFuncs, int nFuncs, CPDF_ColorSpace* pCS)
-{
-    if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM || pFuncs == NULL || pCS == NULL) {
-        return CFX_FloatRect(0, 0, 0, 0);
-    }
-    CPDF_MeshStream stream;
-    if (!stream.Load(pStream, pFuncs, nFuncs, pCS)) {
-        return CFX_FloatRect(0, 0, 0, 0);
-    }
-    CFX_FloatRect rect;
-    FX_BOOL bStarted = FALSE;
-    FX_BOOL bGouraud = type == 4 || type == 5;
-    int full_point_count = type == 7 ? 16 : (type == 6 ? 12 : 1);
-    int full_color_count = (type == 6 || type == 7) ? 4 : 1;
-    while (!stream.m_BitStream.IsEOF()) {
-        FX_DWORD flag;
-        if (type != 5) {
-            flag = stream.GetFlag();
-        }
-        int point_count = full_point_count, color_count = full_color_count;
-        if (!bGouraud && flag) {
-            point_count -= 4;
-            color_count -= 2;
-        }
-        for (int i = 0; i < point_count; i ++) {
-            FX_FLOAT x, y;
-            stream.GetCoords(x, y);
-            if (bStarted) {
-                rect.UpdateRect(x, y);
-            } else {
-                rect.InitRect(x, y);
-                bStarted = TRUE;
-            }
-        }
-        stream.m_BitStream.SkipBits(stream.m_nComps * stream.m_nCompBits * color_count);
-        if (bGouraud) {
-            stream.m_BitStream.ByteAlign();
-        }
-    }
-    rect.Transform(pMatrix);
-    return rect;
-}
+  }
+  return TRUE;
+}
+CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream,
+                              int type,
+                              const CFX_AffineMatrix* pMatrix,
+                              CPDF_Function** pFuncs,
+                              int nFuncs,
+                              CPDF_ColorSpace* pCS) {
+  if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM ||
+      pFuncs == NULL || pCS == NULL) {
+    return CFX_FloatRect(0, 0, 0, 0);
+  }
+  CPDF_MeshStream stream;
+  if (!stream.Load(pStream, pFuncs, nFuncs, pCS)) {
+    return CFX_FloatRect(0, 0, 0, 0);
+  }
+  CFX_FloatRect rect;
+  FX_BOOL bStarted = FALSE;
+  FX_BOOL bGouraud = type == 4 || type == 5;
+  int full_point_count = type == 7 ? 16 : (type == 6 ? 12 : 1);
+  int full_color_count = (type == 6 || type == 7) ? 4 : 1;
+  while (!stream.m_BitStream.IsEOF()) {
+    FX_DWORD flag;
+    if (type != 5) {
+      flag = stream.GetFlag();
+    }
+    int point_count = full_point_count, color_count = full_color_count;
+    if (!bGouraud && flag) {
+      point_count -= 4;
+      color_count -= 2;
+    }
+    for (int i = 0; i < point_count; i++) {
+      FX_FLOAT x, y;
+      stream.GetCoords(x, y);
+      if (bStarted) {
+        rect.UpdateRect(x, y);
+      } else {
+        rect.InitRect(x, y);
+        bStarted = TRUE;
+      }
+    }
+    stream.m_BitStream.SkipBits(stream.m_nComps * stream.m_nCompBits *
+                                color_count);
+    if (bGouraud) {
+      stream.m_BitStream.ByteAlign();
+    }
+  }
+  rect.Transform(pMatrix);
+  return rect;
+}