clang-format all code

core/src/reflow/reflowedpage.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/reflow/reflowengine.h"
 #include "reflowedpage.h"
-CPDF_ProgressiveReflowPageParser::CPDF_ProgressiveReflowPageParser()
-{
-    m_nObjProcessed = 0;
-    m_pReflowEngine = NULL;
+CPDF_ProgressiveReflowPageParser::CPDF_ProgressiveReflowPageParser() {
+  m_nObjProcessed = 0;
+  m_pReflowEngine = NULL;
+  m_pProvider = NULL;
+}
+CPDF_ProgressiveReflowPageParser::~CPDF_ProgressiveReflowPageParser() {
+  if (m_pProvider) {
+    delete m_pProvider;
+  }
+  m_pProvider = NULL;
+  if (m_pReflowEngine) {
+    delete m_pReflowEngine;
+  }
+  m_pReflowEngine = NULL;
+}
+void CPDF_ProgressiveReflowPageParser::Init() {
+  m_Status = Ready;
+}
+CPDF_ReflowedPage::CPDF_ReflowedPage(CFX_GrowOnlyPool* pMemoryPool) {
+  m_PageWidth = 0;
+  m_PageHeight = 0;
+  m_bWaiting = TRUE;
+  if (pMemoryPool) {
+    m_pMemoryPool = pMemoryPool;
+    m_bCreateMemoryPool = FALSE;
+  } else {
+    m_pMemoryPool = FX_NEW CFX_GrowOnlyPool;
+    m_bCreateMemoryPool = TRUE;
+  }
+  m_pCharState = FX_NEW CRF_CharStateArray(10);
+  m_pReflowed = FX_NEW CRF_DataPtrArray(500);
+  m_pPageInfos = NULL;
+}
+CPDF_ReflowedPage::~CPDF_ReflowedPage() {
+  if (m_pReflowed) {
+    for (int i = 0; i < m_pReflowed->GetSize(); i++) {
+      CRF_Data* pData = (*m_pReflowed)[i];
+      if (pData->m_Type == CRF_Data::Image) {
+        delete ((CRF_ImageData*)pData)->m_pBitmap;
+      }
+    }
+    m_pReflowed->RemoveAll();
+    delete m_pReflowed;
+  }
+  m_pReflowed = NULL;
+  if (m_pCharState) {
+    m_pCharState->RemoveAll();
+    delete m_pCharState;
+  }
+  m_pCharState = NULL;
+  if (m_bCreateMemoryPool && m_pMemoryPool) {
+    m_pMemoryPool->FreeAll();
+  }
+  if (m_pMemoryPool) {
+    delete m_pMemoryPool;
+  }
+  m_pMemoryPool = NULL;
+  m_pPDFPage = NULL;
+  if (m_pPageInfos) {
+    ReleasePageObjsMemberShip();
+  }
+}
+FX_BOOL CPDF_ReflowedPage::RetainPageObjsMemberShip() {
+  if (NULL == m_pPDFPage) {
+    return FALSE;
+  }
+  if (NULL == m_pPageInfos) {
+    m_pPageInfos = FX_NEW CFX_MapPtrToPtr();
+  } else {
+    return TRUE;
+  }
+  FX_POSITION pos = m_pPDFPage->GetFirstObjectPosition();
+  if (!pos) {
+    return FALSE;
+  }
+  CPDF_PageObject* pPageObj = NULL;
+  while (pos) {
+    pPageObj = m_pPDFPage->GetNextObject(pos);
+    MarkPageObjMemberShip(pPageObj, NULL);
+    pPageObj = NULL;
+  }
+  return TRUE;
+}
+void CPDF_ReflowedPage::MarkPageObjMemberShip(CPDF_PageObject* pObj,
+                                              CRF_PageInfo* pParent) {
+  if (NULL == m_pPageInfos) {
+    return;
+  }
+  CRF_PageInfo* pPageInfo = FX_NEW CRF_PageInfo(pObj, pParent);
+  if (NULL == pPageInfo) {
+    return;
+  }
+  m_pPageInfos->SetAt(pObj, pPageInfo);
+  if (PDFPAGE_FORM != pObj->m_Type) {
+    return;
+  }
+  CPDF_FormObject* pFormObj = (CPDF_FormObject*)pObj;
+  FX_POSITION pos;
+  pos = pFormObj->m_pForm->GetFirstObjectPosition();
+  if (!pos) {
+    return;
+  }
+  CPDF_PageObject* pPageObj = NULL;
+  while (pos) {
+    pPageObj = pFormObj->m_pForm->GetNextObject(pos);
+    MarkPageObjMemberShip(pPageObj, pPageInfo);
+    pPageObj = NULL;
+  }
+}
+void CPDF_ReflowedPage::ReleasePageObjsMemberShip() {
+  if (NULL == m_pPageInfos) {
+    return;
+  }
+  CPDF_PageObject* pPageObj = NULL;
+  CRF_PageInfo* pPageInfo = NULL;
+  FX_POSITION pos = m_pPageInfos->GetStartPosition();
+  while (pos) {
+    m_pPageInfos->GetNextAssoc(pos, (void*&)pPageObj, (void*&)pPageInfo);
+    delete pPageInfo;
+  }
+  m_pPageInfos->RemoveAll();
+  delete m_pPageInfos;
+  m_pPageInfos = NULL;
+}
+CPDF_Dictionary* CPDF_ReflowedPage::GetFormResDict(CPDF_PageObject* pObj) {
+  if (NULL == m_pPageInfos) {
+    return NULL;
+  }
+  if (FALSE == RetainPageObjsMemberShip()) {
+    return NULL;
+  }
+  CRF_PageInfo* pPageInfo = (CRF_PageInfo*)m_pPageInfos->GetValueAt(pObj);
+  if (NULL == pPageInfo) {
+    return NULL;
+  }
+  return pPageInfo->GetFormDict();
+}
+void CPDF_ReflowedPage::GetDisplayMatrix(CFX_AffineMatrix& matrix,
+                                         FX_INT32 xPos,
+                                         FX_INT32 yPos,
+                                         FX_INT32 xSize,
+                                         FX_INT32 ySize,
+                                         FX_INT32 iRotate,
+                                         const CFX_AffineMatrix* pPageMatrix) {
+  CFX_AffineMatrix display_matrix;
+  if (m_PageHeight == 0) {
+    matrix.Set(1, 0, 0, -1, 0, 0);
+    return;
+  }
+  FX_INT32 x0, y0, x1, y1, x2, y2;
+  iRotate %= 4;
+  switch (iRotate) {
+    case 0:
+      x0 = xPos;
+      y0 = yPos;
+      x1 = xPos;
+      y1 = yPos + ySize;
+      x2 = xPos + xSize;
+      y2 = yPos;
+      break;
+    case 3:
+      x0 = xPos;
+      y0 = ySize + yPos;
+      x1 = xPos + xSize;
+      y1 = yPos + ySize;
+      x2 = xPos;
+      y2 = yPos;
+      break;
+    case 2:
+      x0 = xSize + xPos;
+      y0 = ySize + yPos;
+      x1 = xSize + xPos;
+      y1 = yPos;
+      x2 = xPos;
+      y2 = ySize + yPos;
+      break;
+    case 1:
+      x0 = xPos + xSize;
+      y0 = yPos;
+      x1 = xPos;
+      y1 = yPos;
+      x2 = xPos + xSize;
+      y2 = yPos + ySize;
+      break;
+  }
+  display_matrix.Set(FXSYS_Div((FX_FLOAT)(x2 - x0), m_PageWidth),
+                     FXSYS_Div((FX_FLOAT)(y2 - y0), m_PageWidth),
+                     FXSYS_Div((FX_FLOAT)(x1 - x0), m_PageHeight),
+                     FXSYS_Div((FX_FLOAT)(y1 - y0), m_PageHeight),
+                     (FX_FLOAT)(x0),
+                     (FX_FLOAT)(y0));
+  matrix.Set(1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f);
+  matrix.Concat(display_matrix);
+  return;
+}
+FX_FLOAT CPDF_ReflowedPage::GetPageHeight() {
+  return m_PageHeight;
+}
+void CPDF_ReflowedPage::FocusGetData(const CFX_AffineMatrix matrix,
+                                     FX_INT32 x,
+                                     FX_INT32 y,
+                                     CFX_ByteString& str) {
+  if (NULL == m_pReflowed) {
+    return;
+  }
+  CFX_AffineMatrix revMatrix;
+  revMatrix.SetReverse(matrix);
+  FX_FLOAT x1, y1;
+  revMatrix.Transform((float)x, (float)y, x1, y1);
+  int count = m_pReflowed->GetSize();
+  FX_FLOAT dx = 1000, dy = 1000;
+  FX_INT32 pos = 0;
+  FX_INT32 i;
+  for (i = 0; i < count; i++) {
+    CRF_Data* pData = (*m_pReflowed)[i];
+    FX_FLOAT tempdy = FXSYS_fabs(pData->m_PosY - y1);
+    if (FXSYS_fabs(tempdy - dy) < 1) {
+      continue;
+    }
+    CFX_FloatRect rect(
+        0, pData->m_PosY + pData->m_Height, this->m_PageWidth, pData->m_PosY);
+    if (rect.Contains(x1, y1)) {
+      pos = i;
+      dx = 0;
+      dy = 0;
+      break;
+    } else if (tempdy < dy) {
+      dy = tempdy;
+      dx = FXSYS_fabs(pData->m_PosX - x1);
+      pos = i;
+    } else if (tempdy == dy) {
+      FX_FLOAT tempdx = FXSYS_fabs(pData->m_PosX - x1);
+      if (tempdx < dx) {
+        dx = tempdx;
+        pos = i;
+      }
+    } else if (tempdy > dy) {
+      break;
+    }
+  }
+  if (dx != 0 || dy != 0) {
+    count = count < (pos + 10) ? count : (pos + 10);
+    for (i = 0 > (pos - 10) ? 0 : (pos - 10); i < count; i++) {
+      CRF_Data* pData = (*m_pReflowed)[i];
+      FX_FLOAT tempdy = FXSYS_fabs(pData->m_PosY - y1);
+      if (tempdy < dy) {
+        dy = tempdy;
+        dx = FXSYS_fabs(pData->m_PosX - x1);
+        pos = i;
+      } else if (tempdy == dy) {
+        FX_FLOAT tempdx = FXSYS_fabs(pData->m_PosX - x1);
+        if (tempdx < dx) {
+          dx = tempdx;
+          pos = i;
+        }
+      }
+    }
+  }
+  str.Format("%d", pos);
+}
+FX_BOOL CPDF_ReflowedPage::FocusGetPosition(const CFX_AffineMatrix matrix,
+                                            CFX_ByteString str,
+                                            FX_INT32& x,
+                                            FX_INT32& y) {
+  if (NULL == m_pReflowed) {
+    return FALSE;
+  }
+  FX_INT32 pos = FXSYS_atoi(str);
+  if (pos < 0 || pos >= m_pReflowed->GetSize()) {
+    return FALSE;
+  }
+  CRF_Data* pData = (*m_pReflowed)[pos];
+  FX_FLOAT x1, y1;
+  matrix.Transform(pData->m_PosX, pData->m_PosY + pData->m_Height, x1, y1);
+  x = (int)x1;
+  y = (int)y1;
+  return TRUE;
+}
+int CPDF_ProgressiveReflowPageParser::GetPosition() {
+  if (!m_pProvider) {
+    return 0;
+  }
+  if (!m_pReflowEngine) {
+    return m_pProvider->GetPosition() / 2;
+  }
+  return m_pProvider->GetPosition() / 2 + m_pReflowEngine->GetPosition() / 2;
+}
+void CPDF_ProgressiveReflowPageParser::Continue(IFX_Pause* pPause) {
+  if (NULL == m_pReflowPage) {
+    return;
+  }
+  if (m_Status != ToBeContinued) {
+    return;
+  }
+  m_pPause = pPause;
+  if (m_pReflowEngine) {
+    if (m_pReflowEngine->Continue() != LayoutToBeContinued) {
+      m_Status = Done;
+    }
+  } else {
+    if (m_pProvider->Continue() == LayoutFinished) {
+      m_pReflowEngine = IPDF_LayoutProcessor::Create_LayoutProcessor_Reflow(
+          m_TopIndent,
+          m_ReflowedWidth,
+          m_fScreenHeight,
+          m_pReflowPage,
+          m_flags,
+          m_ParseStyle.m_LineSpace);
+      CFX_AffineMatrix matrix;
+      m_pPDFPage->GetDisplayMatrix(matrix,
+                                   0,
+                                   0,
+                                   (int)(m_pPDFPage->GetPageWidth()),
+                                   (int)(m_pPDFPage->GetPageHeight()),
+                                   0);
+      if (m_pReflowEngine->StartProcess(m_pProvider->GetRoot(),
+                                        m_pPause,
+                                        &matrix) != LayoutToBeContinued) {
+        m_Status = Done;
+      }
+    }
+  }
+  if (m_TopIndent && m_Status == Done) {
+    m_pReflowPage->m_PageHeight -= m_TopIndent;
+  }
+}
+void CPDF_ProgressiveReflowPageParser::Clear() {
+  this->Init();
+  return;
+}
+FX_BOOL IPDF_ProgressiveReflowPageParser::IsTaggedPage(
+    CPDF_PageObjects* pPage) {
+  if (!pPage) {
+    return FALSE;
+  }
+  CPDF_StructTree* pPageTree =
+      CPDF_StructTree::LoadPage(pPage->m_pDocument, pPage->m_pFormDict);
+  if (pPageTree) {
+    int count = pPageTree->CountTopElements();
+    if (count) {
+      for (int i = 0; i < count; i++) {
+        CPDF_StructElement* pElm = pPageTree->GetTopElement(i);
+        if (pElm) {
+          delete pPageTree;
+          pPageTree = NULL;
+          return TRUE;
+        }
+      }
+    }
+    delete pPageTree;
+    pPageTree = NULL;
+    return FALSE;
+  }
+  return FALSE;
+}
+void CPDF_ProgressiveReflowPageParser::Start(IPDF_ReflowedPage* pReflowPage,
+                                             CPDF_Page* pPage,
+                                             FX_FLOAT topIndent,
+                                             FX_FLOAT fWidth,
+                                             FX_FLOAT fHeight,
+                                             IFX_Pause* pPause,
+                                             int flags) {
+  if (NULL == pReflowPage) {
+    m_Status = Failed;
+    return;
+  }
+  m_flags = flags;
+  m_pReflowPage = (CPDF_ReflowedPage*)pReflowPage;
+  m_pReflowPage->m_pPDFPage = pPage;
+  m_pReflowPage->ReleasePageObjsMemberShip();
+  m_pPDFPage = pPage;
+  m_TopIndent = topIndent;
+  m_pPause = pPause;
+  m_fScreenHeight = fHeight;
+  m_ReflowedWidth = fWidth;
+  m_pProvider =
+      IPDF_LayoutProvider::Create_LayoutProvider_TaggedPDF(m_pPDFPage);
+  LayoutStatus status = m_pProvider->StartLoad(pPause);
+  if (status == LayoutError) {
+    delete m_pProvider;
+    m_pProvider = IPDF_LayoutProvider::Create_LayoutProvider_AutoReflow(
+        m_pPDFPage, m_flags & RF_PARSER_READERORDER);
+    if (NULL == m_pProvider) {
+      m_Status = Failed;
+      return;
+    }
+    status = m_pProvider->StartLoad(pPause);
+  }
+  if (status == LayoutError) {
+    delete m_pProvider;
     m_pProvider = NULL;
-}
-CPDF_ProgressiveReflowPageParser::~CPDF_ProgressiveReflowPageParser()
-{
-    if(m_pProvider) {
-        delete m_pProvider;
-    }
+    m_Status = Failed;
+    return;
+  }
+  if (status == LayoutToBeContinued) {
+    m_Status = ToBeContinued;
+  } else if (status == LayoutFinished) {
+    m_pReflowEngine = IPDF_LayoutProcessor::Create_LayoutProcessor_Reflow(
+        topIndent,
+        fWidth,
+        fHeight,
+        pReflowPage,
+        m_flags,
+        m_ParseStyle.m_LineSpace);
+    if (NULL == m_pReflowEngine) {
+      delete m_pProvider;
+      m_pProvider = NULL;
+      m_Status = Failed;
+      return;
+    }
+    CFX_AffineMatrix matrix;
+    pPage->GetDisplayMatrix(matrix,
+                            0,
+                            0,
+                            (int)(pPage->GetPageWidth()),
+                            (int)(pPage->GetPageHeight()),
+                            0);
+    CFX_AffineMatrix matrix1 = pPage->GetPageMatrix();
+    if ((status = m_pReflowEngine->StartProcess(
+             m_pProvider->GetRoot(), pPause, &matrix)) != LayoutToBeContinued) {
+      delete m_pReflowEngine;
+      m_pReflowEngine = NULL;
+      m_Status = Done;
+    } else {
+      m_Status = ToBeContinued;
+    }
+  }
+  if (status != LayoutToBeContinued) {
+    delete m_pProvider;
     m_pProvider = NULL;
-    if(m_pReflowEngine) {
-        delete m_pReflowEngine;
-    }
-    m_pReflowEngine = NULL;
-}
-void CPDF_ProgressiveReflowPageParser::Init()
-{
-    m_Status = Ready;
-}
-CPDF_ReflowedPage::CPDF_ReflowedPage(CFX_GrowOnlyPool*  pMemoryPool)
-{
-    m_PageWidth = 0;
-    m_PageHeight = 0;
-    m_bWaiting = TRUE;
-    if(pMemoryPool) {
-        m_pMemoryPool = pMemoryPool;
-        m_bCreateMemoryPool = FALSE;
-    } else {
-        m_pMemoryPool = FX_NEW CFX_GrowOnlyPool;
-        m_bCreateMemoryPool = TRUE;
-    }
-    m_pCharState = FX_NEW CRF_CharStateArray(10);
-    m_pReflowed = FX_NEW CRF_DataPtrArray(500);
-    m_pPageInfos = NULL;
-}
-CPDF_ReflowedPage::~CPDF_ReflowedPage()
-{
-    if (m_pReflowed) {
-        for(int i = 0; i < m_pReflowed->GetSize(); i++) {
-            CRF_Data* pData = (*m_pReflowed)[i];
-            if(pData->m_Type == CRF_Data::Image) {
-                delete ((CRF_ImageData*)pData)->m_pBitmap;
-            }
+  }
+  if (m_TopIndent && m_Status == Done) {
+    m_pReflowPage->m_PageHeight -= m_TopIndent;
+  }
+  return;
+}
+CPDF_ProgressiveReflowPageRender::~CPDF_ProgressiveReflowPageRender() {
+  if (m_pDisplayMatrix) {
+    delete m_pDisplayMatrix;
+  }
+  m_pDisplayMatrix = NULL;
+}
+CPDF_ProgressiveReflowPageRender::CPDF_ProgressiveReflowPageRender() {
+  m_Status = Ready;
+  m_pReflowPage = NULL;
+  m_pDisplayMatrix = NULL;
+  m_CurrNum = 0;
+  m_pFontEncoding = NULL;
+  m_DisplayColor = -1;
+}
+static FX_FLOAT _CIDTransformToFloat(FX_BYTE ch) {
+  if (ch < 128) {
+    return ch * 1.0f / 127;
+  }
+  return (-255 + ch) * 1.0f / 127;
+}
+int CPDF_ProgressiveReflowPageRender::GetPosition() {
+  if (m_CurrNum == 0 || NULL == m_pReflowPage) {
+    return 0;
+  }
+  int size = m_pReflowPage->m_pReflowed->GetSize();
+  if (size == 0 || m_CurrNum >= size) {
+    return 100;
+  }
+  return (int)(m_CurrNum * 100 / size);
+}
+void CPDF_ProgressiveReflowPageRender::Display(IFX_Pause* pPause) {
+  if (NULL == m_pReflowPage) {
+    m_Status = Done;
+    return;
+  }
+  FX_RECT clipBox = m_pFXDevice->GetClipBox();
+  int size = m_pReflowPage->m_pReflowed->GetSize();
+  if (size < 1 || NULL == m_pDisplayMatrix) {
+    m_Status = Done;
+    return;
+  }
+  for (int i = m_CurrNum; i < size; i++) {
+    CRF_Data* pData = (*m_pReflowPage->m_pReflowed)[i];
+    if (!pData) {
+      continue;
+    }
+    CFX_FloatRect rect(pData->m_PosX,
+                       pData->m_PosY + pData->m_Height,
+                       pData->m_PosX + pData->m_Width,
+                       pData->m_PosY);
+    m_pDisplayMatrix->TransformRect(rect);
+    if (rect.left > clipBox.right || rect.right < clipBox.left ||
+        rect.bottom > clipBox.bottom || rect.top < clipBox.top) {
+      continue;
+    }
+    if (pData->GetType() == CRF_Data::Text) {
+      CRF_CharData* pCharData = (CRF_CharData*)pData;
+      CPDF_Font* pPDFFont = pCharData->m_pCharState->m_pFont;
+      if (pPDFFont->GetFontType() == PDFFONT_TYPE3) {
+        continue;
+      }
+      FX_FLOAT x = pData->m_PosX,
+               y = pData->m_PosY - pCharData->m_pCharState->m_fDescent;
+      FXTEXT_CHARPOS charpos;
+      charpos.m_GlyphIndex = pPDFFont->GlyphFromCharCode(pCharData->m_CharCode);
+      charpos.m_FontCharWidth =
+          pPDFFont->m_Font.GetGlyphWidth(charpos.m_GlyphIndex);
+      charpos.m_OriginX = x;
+      charpos.m_OriginY = y;
+      FX_FLOAT charW = pData->m_Width * 1000 / pData->m_Height;
+      if (charW != charpos.m_FontCharWidth) {
+        charpos.m_bGlyphAdjust = TRUE;
+        charpos.m_AdjustMatrix[0] = charW / charpos.m_FontCharWidth;
+        charpos.m_AdjustMatrix[1] = 0;
+        charpos.m_AdjustMatrix[2] = 0;
+        charpos.m_AdjustMatrix[3] = 1;
+      } else {
+        charpos.m_bGlyphAdjust = FALSE;
+      }
+      FX_BOOL bRet = FALSE;
+      if (m_DisplayColor == -1)
+        bRet = m_pFXDevice->DrawNormalText(
+            1,
+            &charpos,
+            &(pPDFFont->m_Font),
+            NULL,
+            pCharData->m_pCharState->m_fFontSize,
+            m_pDisplayMatrix,
+            pCharData->m_pCharState->m_Color + 0xff000000,
+            FXTEXT_CLEARTYPE);
+      else
+        bRet = m_pFXDevice->DrawNormalText(1,
+                                           &charpos,
+                                           &(pPDFFont->m_Font),
+                                           NULL,
+                                           pCharData->m_pCharState->m_fFontSize,
+                                           m_pDisplayMatrix,
+                                           m_DisplayColor,
+                                           FXTEXT_CLEARTYPE);
+    } else if (pData->GetType() == CRF_Data::Image) {
+      CRF_ImageData* pImageData = (CRF_ImageData*)pData;
+      if (!pImageData->m_pBitmap) {
+        continue;
+      }
+      int left = 0, top = 0;
+      CFX_DIBitmap* pDiBmp = NULL;
+      CFX_DIBSource* pDispSource = pImageData->m_pBitmap;
+      if (pImageData->m_Matrix.d < 0) {
+        CFX_AffineMatrix matrix(
+            pImageData->m_Matrix.a, 0, 0, -pImageData->m_Matrix.d, 0, 0);
+        int left, top;
+        pDiBmp = pImageData->m_pBitmap->TransformTo(&matrix, left, top);
+        pDispSource = pDiBmp;
+      }
+      if (NULL == pDispSource) {
+        continue;
+      }
+      if (pDispSource->GetFormat() == FXDIB_1bppMask ||
+          pDispSource->GetFormat() == FXDIB_8bppMask) {
+        m_pFXDevice->StretchBitMask(pDispSource,
+                                    (int)(rect.left + 0.5),
+                                    (int)(rect.bottom + 0.5),
+                                    (int)(rect.Width() + 0.5),
+                                    (int)(rect.Height() + 0.5),
+                                    0xff000000);
+      } else {
+        m_pFXDevice->StretchDIBits(pDispSource,
+                                   (int)(rect.left + 0.5),
+                                   (int)(rect.bottom + 0.5),
+                                   (int)(rect.Width() + 0.5),
+                                   (int)(rect.Height() + 0.5));
+      }
+      if (m_pFXDevice->GetBitmap() &&
+          m_pFXDevice->GetBitmap()->GetFormat() == FXDIB_8bppRgb &&
+          m_pFXDevice->GetBitmap()->GetPalette() == NULL) {
+        int nPalette = 0;
+        switch (m_DitherBits) {
+          case 0:
+            nPalette = 0;
+            break;
+          case 1:
+            nPalette = 2;
+            break;
+          case 2:
+            nPalette = 4;
+            break;
+          case 3:
+            nPalette = 8;
+            break;
+          case 4:
+            nPalette = 16;
+            break;
+          case 5:
+            nPalette = 32;
+            break;
+          case 6:
+            nPalette = 64;
+            break;
+          case 7:
+            nPalette = 128;
+            break;
+          default:
+            nPalette = 256;
+            break;
         }
-        m_pReflowed->RemoveAll();
-        delete m_pReflowed;
-    }
-    m_pReflowed = NULL;
-    if (m_pCharState) {
-        m_pCharState->RemoveAll();
-        delete m_pCharState;
-    }
-    m_pCharState = NULL;
-    if(m_bCreateMemoryPool && m_pMemoryPool) {
-        m_pMemoryPool->FreeAll();
-    }
-    if (m_pMemoryPool) {
-        delete m_pMemoryPool;
-    }
-    m_pMemoryPool = NULL;
-    m_pPDFPage = NULL;
-    if (m_pPageInfos) {
-        ReleasePageObjsMemberShip();
-    }
-}
-FX_BOOL CPDF_ReflowedPage::RetainPageObjsMemberShip()
-{
-    if (NULL == m_pPDFPage) {
-        return FALSE;
-    }
-    if (NULL == m_pPageInfos) {
-        m_pPageInfos = FX_NEW CFX_MapPtrToPtr();
-    } else {
-        return TRUE;
-    }
-    FX_POSITION pos = m_pPDFPage->GetFirstObjectPosition();
-    if (!pos)   {
-        return FALSE;
-    }
-    CPDF_PageObject* pPageObj = NULL;
-    while (pos) {
-        pPageObj = m_pPDFPage->GetNextObject(pos);
-        MarkPageObjMemberShip(pPageObj, NULL);
-        pPageObj = NULL;
-    }
-    return TRUE;
-}
-void CPDF_ReflowedPage::MarkPageObjMemberShip(CPDF_PageObject* pObj, CRF_PageInfo* pParent)
-{
-    if (NULL == m_pPageInfos) {
+        if (nPalette >= 2) {
+          FX_ARGB* palette = FX_Alloc(FX_ARGB, nPalette);
+          nPalette--;
+          palette[0] = 0;
+          palette[nPalette] = 255;
+          FX_FLOAT Dither = (FX_FLOAT)255 / (nPalette);
+          for (int i = 1; i < nPalette; i++) {
+            palette[i] = (FX_ARGB)(Dither * i + 0.5);
+          }
+          FX_RECT tmpRect = rect.GetOutterRect();
+          m_pFXDevice->GetBitmap()->DitherFS(palette, nPalette + 1, &tmpRect);
+          FX_Free(palette);
+        }
+      }
+      if (pDiBmp) {
+        delete pDiBmp;
+      }
+    } else if (pData->GetType() == CRF_Data::Path) {
+    }
+    if (!(i % 10)) {
+      if (pPause && pPause->NeedToPauseNow()) {
+        i++;
+        m_CurrNum = i;
+        m_Status = ToBeContinued;
         return;
-    }
-    CRF_PageInfo* pPageInfo = FX_NEW CRF_PageInfo(pObj, pParent);
-    if (NULL == pPageInfo) {
-        return;
-    }
-    m_pPageInfos->SetAt(pObj, pPageInfo);
-    if (PDFPAGE_FORM != pObj->m_Type) {
-        return;
-    }
-    CPDF_FormObject* pFormObj = (CPDF_FormObject*)pObj;
-    FX_POSITION pos;
-    pos = pFormObj->m_pForm->GetFirstObjectPosition();
-    if (!pos)   {
-        return;
-    }
-    CPDF_PageObject* pPageObj = NULL;
-    while (pos) {
-        pPageObj = pFormObj->m_pForm->GetNextObject(pos);
-        MarkPageObjMemberShip(pPageObj, pPageInfo);
-        pPageObj = NULL;
-    }
-}
-void CPDF_ReflowedPage::ReleasePageObjsMemberShip()
-{
-    if (NULL == m_pPageInfos) {
-        return;
-    }
-    CPDF_PageObject* pPageObj = NULL;
-    CRF_PageInfo* pPageInfo = NULL;
-    FX_POSITION pos = m_pPageInfos->GetStartPosition();
-    while (pos) {
-        m_pPageInfos->GetNextAssoc(pos, (void*&)pPageObj, (void*&)pPageInfo);
-        delete pPageInfo;
-    }
-    m_pPageInfos->RemoveAll();
-    delete m_pPageInfos;
-    m_pPageInfos = NULL;
-}
-CPDF_Dictionary* CPDF_ReflowedPage::GetFormResDict(CPDF_PageObject* pObj)
-{
-    if (NULL == m_pPageInfos) {
-        return NULL;
-    }
-    if (FALSE == RetainPageObjsMemberShip()) {
-        return NULL;
-    }
-    CRF_PageInfo* pPageInfo = (CRF_PageInfo*)m_pPageInfos->GetValueAt(pObj);
-    if (NULL == pPageInfo) {
-        return NULL;
-    }
-    return pPageInfo->GetFormDict();
-}
-void CPDF_ReflowedPage::GetDisplayMatrix(CFX_AffineMatrix& matrix, FX_INT32 xPos, FX_INT32 yPos, FX_INT32 xSize, FX_INT32 ySize, FX_INT32 iRotate, const CFX_AffineMatrix* pPageMatrix)
-{
-    CFX_AffineMatrix display_matrix;
-    if(m_PageHeight == 0) {
-        matrix.Set(1, 0, 0, -1, 0, 0);
-        return;
-    }
-    FX_INT32 x0, y0, x1, y1, x2, y2;
-    iRotate %= 4;
-    switch (iRotate) {
-        case 0:
-            x0 = xPos;
-            y0 = yPos;
-            x1 = xPos;
-            y1 = yPos + ySize;
-            x2 = xPos + xSize;
-            y2 = yPos;
-            break;
-        case 3:
-            x0 = xPos;
-            y0 = ySize + yPos;
-            x1 =  xPos + xSize;
-            y1 = yPos + ySize;
-            x2 = xPos;
-            y2 = yPos;
-            break;
-        case 2:
-            x0 = xSize + xPos;
-            y0 = ySize + yPos;
-            x1 = xSize + xPos ;
-            y1 = yPos;
-            x2 = xPos;
-            y2 =  ySize + yPos;
-            break;
-        case 1:
-            x0 = xPos + xSize;
-            y0 = yPos;
-            x1 = xPos;
-            y1 = yPos;
-            x2 = xPos + xSize;
-            y2 = yPos + ySize;
-            break;
-    }
-    display_matrix.Set(FXSYS_Div((FX_FLOAT)(x2 - x0), m_PageWidth),
-                       FXSYS_Div((FX_FLOAT)(y2 - y0), m_PageWidth),
-                       FXSYS_Div((FX_FLOAT)(x1 - x0), m_PageHeight),
-                       FXSYS_Div((FX_FLOAT)(y1 - y0), m_PageHeight),
-                       (FX_FLOAT)(x0), (FX_FLOAT)(y0));
-    matrix.Set(1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f);
-    matrix.Concat(display_matrix);
-    return;
-}
-FX_FLOAT CPDF_ReflowedPage::GetPageHeight()
-{
-    return m_PageHeight;
-}
-void CPDF_ReflowedPage::FocusGetData(const CFX_AffineMatrix matrix, FX_INT32 x, FX_INT32 y, CFX_ByteString& str)
-{
-    if (NULL == m_pReflowed) {
-        return;
-    }
-    CFX_AffineMatrix revMatrix;
-    revMatrix.SetReverse(matrix);
-    FX_FLOAT x1, y1;
-    revMatrix.Transform((float)x, (float)y, x1, y1);
-    int count = m_pReflowed->GetSize();
-    FX_FLOAT dx = 1000, dy = 1000;
-    FX_INT32 pos = 0;
-    FX_INT32 i;
-    for(i = 0; i < count; i++) {
-        CRF_Data* pData = (*m_pReflowed)[i];
-        FX_FLOAT tempdy = FXSYS_fabs(pData->m_PosY - y1);
-        if(FXSYS_fabs(tempdy - dy) < 1) {
-            continue;
-        }
-        CFX_FloatRect rect (0, pData->m_PosY + pData->m_Height, this->m_PageWidth, pData->m_PosY);
-        if(rect.Contains(x1, y1)) {
-            pos = i;
-            dx = 0;
-            dy = 0;
-            break;
-        } else if(tempdy < dy) {
-            dy = tempdy;
-            dx = FXSYS_fabs(pData->m_PosX - x1);
-            pos = i;
-        } else if (tempdy == dy) {
-            FX_FLOAT tempdx = FXSYS_fabs(pData->m_PosX - x1);
-            if(tempdx < dx) {
-                dx = tempdx;
-                pos = i;
-            }
-        } else if (tempdy > dy) {
-            break;
-        }
-    }
-    if(dx != 0 || dy != 0) {
-        count = count < (pos + 10) ? count : (pos + 10);
-        for(i = 0 > (pos - 10) ? 0 : (pos - 10); i < count; i++) {
-            CRF_Data* pData = (*m_pReflowed)[i];
-            FX_FLOAT tempdy = FXSYS_fabs(pData->m_PosY - y1);
-            if(tempdy < dy) {
-                dy = tempdy;
-                dx = FXSYS_fabs(pData->m_PosX - x1);
-                pos = i;
-            } else if (tempdy == dy) {
-                FX_FLOAT tempdx = FXSYS_fabs(pData->m_PosX - x1);
-                if(tempdx < dx) {
-                    dx = tempdx;
-                    pos = i;
-                }
-            }
-        }
-    }
-    str.Format("%d", pos);
-}
-FX_BOOL CPDF_ReflowedPage::FocusGetPosition(const CFX_AffineMatrix matrix, CFX_ByteString str, FX_INT32& x, FX_INT32& y)
-{
-    if (NULL == m_pReflowed) {
-        return FALSE;
-    }
-    FX_INT32 pos = FXSYS_atoi(str);
-    if(pos < 0 || pos >= m_pReflowed->GetSize()) {
-        return FALSE;
-    }
-    CRF_Data* pData = (*m_pReflowed)[pos];
-    FX_FLOAT x1, y1;
-    matrix.Transform(pData->m_PosX, pData->m_PosY + pData->m_Height, x1, y1);
-    x = (int)x1;
-    y = (int)y1;
-    return TRUE;
-}
-int CPDF_ProgressiveReflowPageParser::GetPosition()
-{
-    if(!m_pProvider) {
-        return 0;
-    }
-    if(!m_pReflowEngine) {
-        return m_pProvider->GetPosition() / 2;
-    }
-    return m_pProvider->GetPosition() / 2 + m_pReflowEngine->GetPosition() / 2;
-}
-void CPDF_ProgressiveReflowPageParser::Continue(IFX_Pause* pPause)
-{
-    if (NULL == m_pReflowPage) {
-        return;
-    }
-    if(m_Status != ToBeContinued) {
-        return;
-    }
-    m_pPause = pPause;
-    if(m_pReflowEngine) {
-        if(m_pReflowEngine->Continue() != LayoutToBeContinued) {
-            m_Status = Done;
-        }
-    } else {
-        if(m_pProvider->Continue() == LayoutFinished) {
-            m_pReflowEngine = IPDF_LayoutProcessor::Create_LayoutProcessor_Reflow(m_TopIndent, m_ReflowedWidth, m_fScreenHeight, m_pReflowPage, m_flags, m_ParseStyle.m_LineSpace);
-            CFX_AffineMatrix matrix;
-            m_pPDFPage->GetDisplayMatrix(matrix, 0, 0, (int)(m_pPDFPage->GetPageWidth()), (int)(m_pPDFPage->GetPageHeight()), 0);
-            if(m_pReflowEngine->StartProcess(m_pProvider->GetRoot(), m_pPause, &matrix) != LayoutToBeContinued) {
-                m_Status = Done;
-            }
-        }
-    }
-    if(m_TopIndent && m_Status == Done) {
-        m_pReflowPage->m_PageHeight -= m_TopIndent;
-    }
-}
-void CPDF_ProgressiveReflowPageParser::Clear()
-{
-    this->Init();
-    return;
-}
-FX_BOOL IPDF_ProgressiveReflowPageParser::IsTaggedPage(CPDF_PageObjects*pPage)
-{
-    if(!pPage) {
-        return FALSE;
-    }
-    CPDF_StructTree* pPageTree = CPDF_StructTree::LoadPage(pPage->m_pDocument, pPage->m_pFormDict);
-    if(pPageTree) {
-        int count = pPageTree->CountTopElements();
-        if(count) {
-            for(int i = 0; i < count; i++) {
-                CPDF_StructElement* pElm = pPageTree->GetTopElement(i);
-                if(pElm) {
-                    delete pPageTree;
-                    pPageTree = NULL;
-                    return TRUE;
-                }
-            }
-        }
-        delete pPageTree;
-        pPageTree = NULL;
-        return FALSE;
-    }
-    return FALSE;
-}
-void CPDF_ProgressiveReflowPageParser::Start(IPDF_ReflowedPage* pReflowPage, CPDF_Page* pPage, FX_FLOAT topIndent, FX_FLOAT fWidth, FX_FLOAT fHeight, IFX_Pause* pPause, int flags)
-{
-    if (NULL == pReflowPage) {
-        m_Status = Failed;
-        return;
-    }
-    m_flags = flags;
-    m_pReflowPage = (CPDF_ReflowedPage*)pReflowPage;
-    m_pReflowPage->m_pPDFPage = pPage;
-    m_pReflowPage->ReleasePageObjsMemberShip();
-    m_pPDFPage = pPage;
-    m_TopIndent = topIndent;
-    m_pPause = pPause;
-    m_fScreenHeight = fHeight;
-    m_ReflowedWidth = fWidth;
-    m_pProvider = IPDF_LayoutProvider::Create_LayoutProvider_TaggedPDF(m_pPDFPage);
-    LayoutStatus status = m_pProvider->StartLoad(pPause);
-    if(status == LayoutError) {
-        delete m_pProvider;
-        m_pProvider = IPDF_LayoutProvider::Create_LayoutProvider_AutoReflow(m_pPDFPage, m_flags & RF_PARSER_READERORDER);
-        if (NULL == m_pProvider) {
-            m_Status = Failed;
-            return;
-        }
-        status = m_pProvider->StartLoad(pPause);
-    }
-    if(status == LayoutError) {
-        delete m_pProvider;
-        m_pProvider = NULL;
-        m_Status = Failed;
-        return;
-    }
-    if(status == LayoutToBeContinued) {
-        m_Status = ToBeContinued;
-    } else if (status == LayoutFinished) {
-        m_pReflowEngine = IPDF_LayoutProcessor::Create_LayoutProcessor_Reflow(topIndent, fWidth, fHeight, pReflowPage, m_flags, m_ParseStyle.m_LineSpace);
-        if(NULL == m_pReflowEngine) {
-            delete m_pProvider;
-            m_pProvider = NULL;
-            m_Status = Failed;
-            return;
-        }
-        CFX_AffineMatrix matrix;
-        pPage->GetDisplayMatrix(matrix, 0, 0, (int)(pPage->GetPageWidth()), (int)(pPage->GetPageHeight()), 0);
-        CFX_AffineMatrix matrix1 = pPage->GetPageMatrix();
-        if((status = m_pReflowEngine->StartProcess(m_pProvider->GetRoot(), pPause, &matrix)) != LayoutToBeContinued) {
-            delete m_pReflowEngine;
-            m_pReflowEngine = NULL;
-            m_Status = Done;
-        } else {
-            m_Status = ToBeContinued;
-        }
-    }
-    if(status != LayoutToBeContinued) {
-        delete m_pProvider;
-        m_pProvider = NULL;
-    }
-    if(m_TopIndent && m_Status == Done) {
-        m_pReflowPage->m_PageHeight -= m_TopIndent;
-    }
-    return;
-}
-CPDF_ProgressiveReflowPageRender::~CPDF_ProgressiveReflowPageRender()
-{
-    if(m_pDisplayMatrix) {
-        delete m_pDisplayMatrix;
-    }
-    m_pDisplayMatrix = NULL;
-}
-CPDF_ProgressiveReflowPageRender::CPDF_ProgressiveReflowPageRender()
-{
-    m_Status = Ready;
-    m_pReflowPage = NULL;
-    m_pDisplayMatrix = NULL;
-    m_CurrNum = 0;
-    m_pFontEncoding = NULL;
-    m_DisplayColor = -1;
-}
-static FX_FLOAT _CIDTransformToFloat(FX_BYTE ch)
-{
-    if (ch < 128) {
-        return ch * 1.0f / 127;
-    }
-    return (-255 + ch) * 1.0f / 127;
-}
-int     CPDF_ProgressiveReflowPageRender::GetPosition()
-{
-    if(m_CurrNum == 0 || NULL == m_pReflowPage) {
-        return 0;
-    }
-    int size = m_pReflowPage->m_pReflowed->GetSize();
-    if(size == 0 || m_CurrNum >= size) {
-        return 100;
-    }
-    return (int)(m_CurrNum * 100 / size);
-}
-void CPDF_ProgressiveReflowPageRender::Display(IFX_Pause* pPause)
-{
-    if (NULL == m_pReflowPage) {
-        m_Status = Done;
-        return;
-    }
-    FX_RECT clipBox = m_pFXDevice->GetClipBox();
-    int size = m_pReflowPage->m_pReflowed->GetSize();
-    if (size < 1 || NULL == m_pDisplayMatrix) {
-        m_Status = Done;
-        return;
-    }
-    for(int i = m_CurrNum; i < size; i++) {
-        CRF_Data* pData = (*m_pReflowPage->m_pReflowed)[i];
-        if(!pData) {
-            continue;
-        }
-        CFX_FloatRect rect (pData->m_PosX, pData->m_PosY + pData->m_Height, pData->m_PosX + pData->m_Width, pData->m_PosY);
-        m_pDisplayMatrix->TransformRect(rect);
-        if(rect.left > clipBox.right || rect.right < clipBox.left || rect.bottom > clipBox.bottom || rect.top < clipBox.top) {
-            continue;
-        }
-        if(pData->GetType() == CRF_Data::Text) {
-            CRF_CharData* pCharData = (CRF_CharData*)pData;
-            CPDF_Font* pPDFFont = pCharData->m_pCharState->m_pFont;
-            if(pPDFFont->GetFontType() == PDFFONT_TYPE3) {
-                continue;
-            }
-            FX_FLOAT x = pData->m_PosX, y = pData->m_PosY - pCharData->m_pCharState->m_fDescent;
-            FXTEXT_CHARPOS charpos ;
-            charpos.m_GlyphIndex = pPDFFont->GlyphFromCharCode(pCharData->m_CharCode);
-            charpos.m_FontCharWidth = pPDFFont->m_Font.GetGlyphWidth(charpos.m_GlyphIndex);
-            charpos.m_OriginX       = x;
-            charpos.m_OriginY       = y;
-            FX_FLOAT charW = pData->m_Width * 1000 / pData->m_Height;
-            if(charW != charpos.m_FontCharWidth) {
-                charpos.m_bGlyphAdjust  = TRUE;
-                charpos.m_AdjustMatrix[0] = charW / charpos.m_FontCharWidth;
-                charpos.m_AdjustMatrix[1] = 0;
-                charpos.m_AdjustMatrix[2] = 0;
-                charpos.m_AdjustMatrix[3] = 1;
-            } else {
-                charpos.m_bGlyphAdjust  = FALSE;
-            }
-            FX_BOOL bRet = FALSE;
-            if(m_DisplayColor == -1)
-                bRet = m_pFXDevice->DrawNormalText(1, &charpos, &(pPDFFont->m_Font),
-                                                   NULL, pCharData->m_pCharState->m_fFontSize,
-                                                   m_pDisplayMatrix, pCharData->m_pCharState->m_Color + 0xff000000, FXTEXT_CLEARTYPE);
-            else
-                bRet = m_pFXDevice->DrawNormalText(1, &charpos, &(pPDFFont->m_Font),
-                                                   NULL, pCharData->m_pCharState->m_fFontSize, m_pDisplayMatrix, m_DisplayColor, FXTEXT_CLEARTYPE);
-        } else if(pData->GetType() == CRF_Data::Image) {
-            CRF_ImageData* pImageData = (CRF_ImageData*)pData;
-            if(!pImageData->m_pBitmap) {
-                continue;
-            }
-            int left = 0, top = 0;
-            CFX_DIBitmap* pDiBmp = NULL;
-            CFX_DIBSource* pDispSource = pImageData->m_pBitmap;
-            if(pImageData->m_Matrix.d < 0) {
-                CFX_AffineMatrix matrix(pImageData->m_Matrix.a, 0, 0, -pImageData->m_Matrix.d, 0, 0);
-                int left, top;
-                pDiBmp = pImageData->m_pBitmap->TransformTo(&matrix, left, top);
-                pDispSource = pDiBmp;
-            }
-            if (NULL == pDispSource) {
-                continue;
-            }
-            if (pDispSource->GetFormat() == FXDIB_1bppMask || pDispSource->GetFormat() == FXDIB_8bppMask) {
-                m_pFXDevice->StretchBitMask(pDispSource, (int)(rect.left + 0.5), (int)(rect.bottom + 0.5), (int)(rect.Width() + 0.5), (int)(rect.Height() + 0.5), 0xff000000);
-            } else {
-                m_pFXDevice->StretchDIBits(pDispSource, (int)(rect.left + 0.5), (int)(rect.bottom + 0.5), (int)(rect.Width() + 0.5), (int)(rect.Height() + 0.5));
-            }
-            if(m_pFXDevice->GetBitmap() && m_pFXDevice->GetBitmap()->GetFormat() == FXDIB_8bppRgb &&
-                    m_pFXDevice->GetBitmap()->GetPalette() == NULL) {
-                int nPalette = 0;
-                switch(m_DitherBits) {
-                    case 0:
-                        nPalette = 0;
-                        break;
-                    case 1:
-                        nPalette = 2;
-                        break;
-                    case 2:
-                        nPalette = 4;
-                        break;
-                    case 3:
-                        nPalette = 8;
-                        break;
-                    case 4:
-                        nPalette = 16;
-                        break;
-                    case 5:
-                        nPalette = 32;
-                        break;
-                    case 6:
-                        nPalette = 64;
-                        break;
-                    case 7:
-                        nPalette = 128;
-                        break;
-                    default:
-                        nPalette = 256;
-                        break;
-                }
-                if(nPalette >= 2) {
-                    FX_ARGB * palette = FX_Alloc(FX_ARGB, nPalette);
-                    nPalette --;
-                    palette[0] = 0;
-                    palette[nPalette] = 255;
-                    FX_FLOAT Dither = (FX_FLOAT)255 / (nPalette);
-                    for(int i = 1; i < nPalette; i++) {
-                        palette[i] = (FX_ARGB)(Dither * i + 0.5);
-                    }
-                    FX_RECT tmpRect = rect.GetOutterRect();
-                    m_pFXDevice->GetBitmap()->DitherFS(palette, nPalette + 1, &tmpRect);
-                    FX_Free (palette);
-                }
-            }
-            if(pDiBmp) {
-                delete pDiBmp;
-            }
-        } else if(pData->GetType() == CRF_Data::Path) {
-        }
-        if(!(i % 10)) {
-            if(pPause && pPause->NeedToPauseNow()) {
-                i++;
-                m_CurrNum = i;
-                m_Status = ToBeContinued;
-                return;
-            }
-        }
-    }
-    m_CurrNum = size;
-    m_Status = Done;
-}
-void CPDF_ProgressiveReflowPageRender::Start(IPDF_ReflowedPage* pReflowPage, CFX_RenderDevice* pDevice, const CFX_AffineMatrix* pMatrix, IFX_Pause* pPause, int DitherBits)
-{
-    if(!pReflowPage || !pDevice || !pMatrix) {
-        m_Status = Failed;
-        return;
-    }
-    m_DitherBits = DitherBits;
-    m_Status = Ready;
-    m_CurrNum = 0;
-    m_pReflowPage = (CPDF_ReflowedPage*)pReflowPage;
-    m_pFXDevice = pDevice;
-    if(NULL == m_pDisplayMatrix) {
-        m_pDisplayMatrix = FX_NEW CFX_AffineMatrix;
-    }
-    if (m_pDisplayMatrix) {
-        m_pDisplayMatrix->Copy(*pMatrix);
-    }
-    m_Status = ToBeContinued;
-    Display(pPause);
-}
-void CPDF_ProgressiveReflowPageRender::Continue(IFX_Pause* pPause)
-{
-    Display(pPause);
-}
-void CPDF_ProgressiveReflowPageRender::SetDisplayColor(FX_COLORREF color)
-{
-    m_DisplayColor = color;
-}
-void CPDF_ProgressiveReflowPageRender::Clear()
-{
-    if (m_pDisplayMatrix) {
-        delete m_pDisplayMatrix;
-    }
-    m_pDisplayMatrix = NULL;
-    m_pReflowPage = NULL;
-    m_pFXDevice = NULL;
-    m_CurrNum = 0;
-    m_Status = Ready;
-}
+      }
+    }
+  }
+  m_CurrNum = size;
+  m_Status = Done;
+}
+void CPDF_ProgressiveReflowPageRender::Start(IPDF_ReflowedPage* pReflowPage,
+                                             CFX_RenderDevice* pDevice,
+                                             const CFX_AffineMatrix* pMatrix,
+                                             IFX_Pause* pPause,
+                                             int DitherBits) {
+  if (!pReflowPage || !pDevice || !pMatrix) {
+    m_Status = Failed;
+    return;
+  }
+  m_DitherBits = DitherBits;
+  m_Status = Ready;
+  m_CurrNum = 0;
+  m_pReflowPage = (CPDF_ReflowedPage*)pReflowPage;
+  m_pFXDevice = pDevice;
+  if (NULL == m_pDisplayMatrix) {
+    m_pDisplayMatrix = FX_NEW CFX_AffineMatrix;
+  }
+  if (m_pDisplayMatrix) {
+    m_pDisplayMatrix->Copy(*pMatrix);
+  }
+  m_Status = ToBeContinued;
+  Display(pPause);
+}
+void CPDF_ProgressiveReflowPageRender::Continue(IFX_Pause* pPause) {
+  Display(pPause);
+}
+void CPDF_ProgressiveReflowPageRender::SetDisplayColor(FX_COLORREF color) {
+  m_DisplayColor = color;
+}
+void CPDF_ProgressiveReflowPageRender::Clear() {
+  if (m_pDisplayMatrix) {
+    delete m_pDisplayMatrix;
+  }
+  m_pDisplayMatrix = NULL;
+  m_pReflowPage = NULL;
+  m_pFXDevice = NULL;
+  m_CurrNum = 0;
+  m_Status = Ready;
+}