C++ CPDF_Path::IsRect方法代码示例

CPDF_ContentParser::Stage CPDF_ContentParser::CheckClip() {
  if (m_pType3Char) {
    m_pType3Char->InitializeFromStreamData(m_pParser->IsColored(),
                                           m_pParser->GetType3Data());
  }

  for (auto& pObj : *m_pObjectHolder->GetPageObjectList()) {
    if (!pObj->m_ClipPath.HasRef())
      continue;
    if (pObj->m_ClipPath.GetPathCount() != 1)
      continue;
    if (pObj->m_ClipPath.GetTextCount() > 0)
      continue;

    CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
    if (!ClipPath.IsRect() || pObj->IsShading())
      continue;

    CFX_PointF point0 = ClipPath.GetPoint(0);
    CFX_PointF point2 = ClipPath.GetPoint(2);
    CFX_FloatRect old_rect(point0.x, point0.y, point2.x, point2.y);
    if (old_rect.Contains(pObj->GetRect()))
      pObj->m_ClipPath.SetNull();
  }
  return Stage::kComplete;
}

void OutputPath(CFX_ByteTextBuf& buf, CPDF_Path path) {
  const CFX_PathData* pPathData = path;
  if (!pPathData)
    return;

  FX_PATHPOINT* pPoints = pPathData->GetPoints();

  if (path.IsRect()) {
    buf << (pPoints[0].m_PointX) << " " << (pPoints[0].m_PointY) << " "
        << (pPoints[2].m_PointX - pPoints[0].m_PointX) << " "
        << (pPoints[2].m_PointY - pPoints[0].m_PointY) << " re\n";
    return;
  }

  CFX_ByteString temp;
  for (int i = 0; i < pPathData->GetPointCount(); i++) {
    buf << (pPoints[i].m_PointX) << " " << (pPoints[i].m_PointY);
    int point_type = pPoints[i].m_Flag & FXPT_TYPE;
    if (point_type == FXPT_MOVETO)
      buf << " m\n";
    else if (point_type == FXPT_BEZIERTO) {
      buf << " " << (pPoints[i + 1].m_PointX) << " "
          << (pPoints[i + 1].m_PointY) << " " << (pPoints[i + 2].m_PointX)
          << " " << (pPoints[i + 2].m_PointY);
      if (pPoints[i + 2].m_Flag & FXPT_CLOSEFIGURE)
        buf << " c h\n";
      else
        buf << " c\n";
      i += 2;
    } else if (point_type == FXPT_LINETO) {
      if (pPoints[i].m_Flag & FXPT_CLOSEFIGURE)
        buf << " l h\n";
      else
        buf << " l\n";
    }
  }
}

void OutputPath(std::ostringstream& buf, CPDF_Path path) {
  const CFX_PathData* pPathData = path.GetObject();
  if (!pPathData)
    return;

  const std::vector<FX_PATHPOINT>& pPoints = pPathData->GetPoints();
  if (path.IsRect()) {
    CFX_PointF diff = pPoints[2].m_Point - pPoints[0].m_Point;
    buf << pPoints[0].m_Point.x << " " << pPoints[0].m_Point.y << " " << diff.x
        << " " << diff.y << " re\n";
    return;
  }

  ByteString temp;
  for (size_t i = 0; i < pPoints.size(); i++) {
    buf << pPoints[i].m_Point.x << " " << pPoints[i].m_Point.y;
    FXPT_TYPE point_type = pPoints[i].m_Type;
    if (point_type == FXPT_TYPE::MoveTo) {
      buf << " m\n";
    } else if (point_type == FXPT_TYPE::BezierTo) {
      buf << " " << pPoints[i + 1].m_Point.x << " " << pPoints[i + 1].m_Point.y
          << " " << pPoints[i + 2].m_Point.x << " " << pPoints[i + 2].m_Point.y;
      buf << " c";
      if (pPoints[i + 2].m_CloseFigure)
        buf << " h";
      buf << "\n";

      i += 2;
    } else if (point_type == FXPT_TYPE::LineTo) {
      buf << " l";
      if (pPoints[i].m_CloseFigure)
        buf << " h";
      buf << "\n";
    }
  }
}

void CPDF_ContentParser::Continue(IFX_Pause* pPause)
{
    while (m_Status == ToBeContinued) {
        if (m_InternalStage == PAGEPARSE_STAGE_PARSE) {
            if (m_pStreamFilter == NULL) {
                if (m_CurrentOffset == m_nStreams) {
                    m_InternalStage = PAGEPARSE_STAGE_CHECKCLIP;
                    if (m_pType3Char) {
                        m_pType3Char->m_bColored = m_pParser->m_bColored;
                        m_pType3Char->m_Width = FXSYS_round(m_pParser->m_Type3Data[0] * 1000);
                        m_pType3Char->m_BBox.left = FXSYS_round(m_pParser->m_Type3Data[2] * 1000);
                        m_pType3Char->m_BBox.bottom = FXSYS_round(m_pParser->m_Type3Data[3] * 1000);
                        m_pType3Char->m_BBox.right = FXSYS_round(m_pParser->m_Type3Data[4] * 1000);
                        m_pType3Char->m_BBox.top = FXSYS_round(m_pParser->m_Type3Data[5] * 1000);
                        m_pType3Char->m_bPageRequired = m_pParser->m_bResourceMissing;
                    }
                    delete m_pParser;
                    m_pParser = NULL;
                    continue;
                }
                CPDF_Object* pContent = m_pObjects->m_pFormDict->GetElementValue(FX_BSTRC("Contents"));
                if (pContent->GetType() == PDFOBJ_STREAM) {
                    m_pStreamFilter = ((CPDF_Stream*)pContent)->GetStreamFilter();
                } else {
                    CPDF_Stream* pStream = ((CPDF_Array*)pContent)->GetStream(m_CurrentOffset);
                    if (pStream == NULL) {
                        m_CurrentOffset ++;
                        continue;
                    }
                    m_pStreamFilter = pStream->GetStreamFilter();
                }
            }
            FX_DWORD len = m_pStreamFilter->ReadBlock(m_pParser->m_pStreamBuf, STREAM_PARSE_BUFSIZE);
            m_pParser->InputData(m_pParser->m_pStreamBuf, len);
            if (m_pParser->m_bAbort) {
                delete m_pStreamFilter;
                m_pStreamFilter = NULL;
                m_Status = Done;
                delete m_pParser;
                m_pParser = NULL;
                return;
            }
            if (len < STREAM_PARSE_BUFSIZE) {
                m_pParser->Finish();
                m_CurrentOffset ++;
                delete m_pStreamFilter;
                m_pStreamFilter = NULL;
            }
            if (pPause && pPause->NeedToPauseNow()) {
                return;
            }
        }
        if (m_InternalStage == PAGEPARSE_STAGE_CHECKCLIP) {
            FX_POSITION pos = m_pObjects->m_ObjectList.GetHeadPosition();
            while (pos) {
                CPDF_PageObject* pObj = (CPDF_PageObject*)m_pObjects->m_ObjectList.GetNext(pos);
                if (pObj == NULL) {
                    continue;
                }
                if (pObj->m_ClipPath.IsNull()) {
                    continue;
                }
                if (pObj->m_ClipPath.GetPathCount() != 1) {
                    continue;
                }
                if (pObj->m_ClipPath.GetTextCount()) {
                    continue;
                }
                CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
                if (!ClipPath.IsRect() || pObj->m_Type == PDFPAGE_SHADING) {
                    continue;
                }
                CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0),
                                       ClipPath.GetPointX(2), ClipPath.GetPointY(2));
                CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right, pObj->m_Top);
                if (old_rect.Contains(obj_rect)) {
                    pObj->m_ClipPath.SetNull();
                }
            }
            if (m_pObjects->m_ObjectList.GetCount() == 1) {
                CPDF_PageObject* pObj = (CPDF_PageObject*)m_pObjects->m_ObjectList.GetAt(m_pObjects->m_ObjectList.GetHeadPosition());
                if (pObj && pObj->m_Type == PDFPAGE_TEXT) {
                    CPDF_TextObject* pText = (CPDF_TextObject*)pObj;
                }
            }
            m_Status = Done;
            return;
        }
    }
}

void CPDF_ContentParser::Continue(IFX_Pause* pPause) {
  int steps = 0;
  while (m_Status == ToBeContinued) {
    if (m_InternalStage == STAGE_GETCONTENT) {
      if (m_CurrentOffset == m_nStreams) {
        if (!m_StreamArray.empty()) {
          FX_SAFE_UINT32 safeSize = 0;
          for (const auto& stream : m_StreamArray) {
            safeSize += stream->GetSize();
            safeSize += 1;
          }
          if (!safeSize.IsValid()) {
            m_Status = Done;
            return;
          }
          m_Size = safeSize.ValueOrDie();
          m_pData = FX_Alloc(uint8_t, m_Size);
          uint32_t pos = 0;
          for (const auto& stream : m_StreamArray) {
            FXSYS_memcpy(m_pData + pos, stream->GetData(), stream->GetSize());
            pos += stream->GetSize();
            m_pData[pos++] = ' ';
          }
          m_StreamArray.clear();
        } else {
          m_pData = (uint8_t*)m_pSingleStream->GetData();
          m_Size = m_pSingleStream->GetSize();
        }
        m_InternalStage = STAGE_PARSE;
        m_CurrentOffset = 0;
      } else {
        CPDF_Array* pContent =
            m_pObjectHolder->m_pFormDict->GetArrayFor("Contents");
        m_StreamArray[m_CurrentOffset].reset(new CPDF_StreamAcc);
        CPDF_Stream* pStreamObj = ToStream(
            pContent ? pContent->GetDirectObjectAt(m_CurrentOffset) : nullptr);
        m_StreamArray[m_CurrentOffset]->LoadAllData(pStreamObj, false);
        m_CurrentOffset++;
      }
    }
    if (m_InternalStage == STAGE_PARSE) {
      if (!m_pParser) {
        m_pParser.reset(new CPDF_StreamContentParser(
            m_pObjectHolder->m_pDocument, m_pObjectHolder->m_pPageResources,
            nullptr, nullptr, m_pObjectHolder, m_pObjectHolder->m_pResources,
            &m_pObjectHolder->m_BBox, nullptr, 0));
        m_pParser->GetCurStates()->m_ColorState.SetDefault();
      }
      if (m_CurrentOffset >= m_Size) {
        m_InternalStage = STAGE_CHECKCLIP;
      } else {
        m_CurrentOffset +=
            m_pParser->Parse(m_pData + m_CurrentOffset,
                             m_Size - m_CurrentOffset, PARSE_STEP_LIMIT);
      }
    }
    if (m_InternalStage == STAGE_CHECKCLIP) {
      if (m_pType3Char) {
        m_pType3Char->m_bColored = m_pParser->IsColored();
        m_pType3Char->m_Width =
            FXSYS_round(m_pParser->GetType3Data()[0] * 1000);
        m_pType3Char->m_BBox.left =
            FXSYS_round(m_pParser->GetType3Data()[2] * 1000);
        m_pType3Char->m_BBox.bottom =
            FXSYS_round(m_pParser->GetType3Data()[3] * 1000);
        m_pType3Char->m_BBox.right =
            FXSYS_round(m_pParser->GetType3Data()[4] * 1000);
        m_pType3Char->m_BBox.top =
            FXSYS_round(m_pParser->GetType3Data()[5] * 1000);
      }
      for (auto& pObj : *m_pObjectHolder->GetPageObjectList()) {
        if (!pObj->m_ClipPath)
          continue;
        if (pObj->m_ClipPath.GetPathCount() != 1)
          continue;
        if (pObj->m_ClipPath.GetTextCount())
          continue;
        CPDF_Path ClipPath = pObj->m_ClipPath.GetPath(0);
        if (!ClipPath.IsRect() || pObj->IsShading())
          continue;
        CFX_FloatRect old_rect(ClipPath.GetPointX(0), ClipPath.GetPointY(0),
                               ClipPath.GetPointX(2), ClipPath.GetPointY(2));
        CFX_FloatRect obj_rect(pObj->m_Left, pObj->m_Bottom, pObj->m_Right,
                               pObj->m_Top);
        if (old_rect.Contains(obj_rect))
          pObj->m_ClipPath.SetNull();
      }
      m_Status = Done;
      return;
    }
    steps++;
    if (pPause && pPause->NeedToPauseNow())
      break;
  }
}