C++ CPDF_Dictionary::GetStringBy方法代码示例

FX_BOOL CPDF_OCContext::LoadOCGStateFromConfig(const CFX_ByteStringC& csConfig,
                                               const CPDF_Dictionary* pOCGDict,
                                               FX_BOOL& bValidConfig) const {
  CPDF_Dictionary* pConfig =
      FPDFDOC_OCG_GetConfig(m_pDocument, pOCGDict, csConfig);
  if (!pConfig) {
    return TRUE;
  }
  bValidConfig = TRUE;
  FX_BOOL bState = pConfig->GetStringBy("BaseState", "ON") != "OFF";
  CPDF_Array* pArray = pConfig->GetArrayBy("ON");
  if (pArray) {
    if (FPDFDOC_OCG_FindGroup(pArray, pOCGDict) >= 0) {
      bState = TRUE;
    }
  }
  pArray = pConfig->GetArrayBy("OFF");
  if (pArray) {
    if (FPDFDOC_OCG_FindGroup(pArray, pOCGDict) >= 0) {
      bState = FALSE;
    }
  }
  pArray = pConfig->GetArrayBy("AS");
  if (pArray) {
    CFX_ByteString csFind = csConfig + "State";
    int32_t iCount = pArray->GetCount();
    for (int32_t i = 0; i < iCount; i++) {
      CPDF_Dictionary* pUsage = pArray->GetDictAt(i);
      if (!pUsage) {
        continue;
      }
      if (pUsage->GetStringBy("Event", "View") != csConfig) {
        continue;
      }
      CPDF_Array* pOCGs = pUsage->GetArrayBy("OCGs");
      if (!pOCGs) {
        continue;
      }
      if (FPDFDOC_OCG_FindGroup(pOCGs, pOCGDict) < 0) {
        continue;
      }
      CPDF_Dictionary* pState = pUsage->GetDictBy(csConfig);
      if (!pState) {
        continue;
      }
      bState = pState->GetStringBy(csFind) != "OFF";
    }
  }
  return bState;
}

CPDF_Object* CPDF_StructElementImpl::GetAttr(const CFX_ByteStringC& owner,
                                             const CFX_ByteStringC& name,
                                             FX_BOOL bInheritable,
                                             FX_FLOAT fLevel) {
  if (fLevel > nMaxRecursion) {
    return nullptr;
  }
  if (bInheritable) {
    CPDF_Object* pAttr = GetAttr(owner, name, FALSE);
    if (pAttr) {
      return pAttr;
    }
    if (!m_pParent) {
      return nullptr;
    }
    return m_pParent->GetAttr(owner, name, TRUE, fLevel + 1);
  }
  CPDF_Object* pA = m_pDict->GetDirectObjectBy("A");
  if (pA) {
    CPDF_Dictionary* pAttrDict = FindAttrDict(pA, owner);
    if (pAttrDict) {
      CPDF_Object* pAttr = pAttrDict->GetDirectObjectBy(CFX_ByteString(name));
      if (pAttr) {
        return pAttr;
      }
    }
  }
  CPDF_Object* pC = m_pDict->GetDirectObjectBy("C");
  if (!pC)
    return nullptr;

  CPDF_Dictionary* pClassMap = m_pTree->m_pTreeRoot->GetDictBy("ClassMap");
  if (!pClassMap)
    return nullptr;

  if (CPDF_Array* pArray = pC->AsArray()) {
    for (uint32_t i = 0; i < pArray->GetCount(); i++) {
      CFX_ByteString class_name = pArray->GetStringAt(i);
      CPDF_Dictionary* pClassDict = pClassMap->GetDictBy(class_name);
      if (pClassDict && pClassDict->GetStringBy("O") == owner)
        return pClassDict->GetDirectObjectBy(CFX_ByteString(name));
    }
    return nullptr;
  }
  CFX_ByteString class_name = pC->GetString();
  CPDF_Dictionary* pClassDict = pClassMap->GetDictBy(class_name);
  if (pClassDict && pClassDict->GetStringBy("O") == owner)
    return pClassDict->GetDirectObjectBy(CFX_ByteString(name));
  return nullptr;
}

CPDF_AnnotList::CPDF_AnnotList(CPDF_Page* pPage)
    : m_pDocument(pPage->m_pDocument) {
  if (!pPage->m_pFormDict)
    return;

  CPDF_Array* pAnnots = pPage->m_pFormDict->GetArrayBy("Annots");
  if (!pAnnots)
    return;

  CPDF_Dictionary* pRoot = m_pDocument->GetRoot();
  CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
  FX_BOOL bRegenerateAP =
      pAcroForm && pAcroForm->GetBooleanBy("NeedAppearances");
  for (size_t i = 0; i < pAnnots->GetCount(); ++i) {
    CPDF_Dictionary* pDict = ToDictionary(pAnnots->GetDirectObjectAt(i));
    if (!pDict)
      continue;

    uint32_t dwObjNum = pDict->GetObjNum();
    if (dwObjNum == 0) {
      dwObjNum = m_pDocument->AddIndirectObject(pDict);
      CPDF_Reference* pAction = new CPDF_Reference(m_pDocument, dwObjNum);
      pAnnots->InsertAt(i, pAction);
      pAnnots->RemoveAt(i + 1);
      pDict = pAnnots->GetDictAt(i);
    }

    // Skip creating Popup annotation in the PDF document since PDFium provides
    // its own Popup annotations.
    if (pDict->GetStringBy("Subtype") == "Popup")
      continue;

    m_AnnotList.push_back(
        std::unique_ptr<CPDF_Annot>(new CPDF_Annot(pDict, m_pDocument, false)));
    if (bRegenerateAP && pDict->GetStringBy("Subtype") == "Widget" &&
        CPDF_InterForm::IsUpdateAPEnabled()) {
      FPDF_GenerateAP(m_pDocument, pDict);
    }
  }

  size_t nAnnotListSize = m_AnnotList.size();
  for (size_t i = 0; i < nAnnotListSize; ++i) {
    std::unique_ptr<CPDF_Annot> pPopupAnnot(
        CreatePopupAnnot(m_AnnotList[i].get(), m_pDocument));
    if (pPopupAnnot)
      m_AnnotList.push_back(std::move(pPopupAnnot));
  }
}

int CPDFSDK_BAAnnot::GetBorderStyle() const {
  CPDF_Dictionary* pBSDict = m_pAnnot->GetAnnotDict()->GetDictBy("BS");
  if (pBSDict) {
    CFX_ByteString sBorderStyle = pBSDict->GetStringBy("S", "S");
    if (sBorderStyle == "S")
      return BBS_SOLID;
    if (sBorderStyle == "D")
      return BBS_DASH;
    if (sBorderStyle == "B")
      return BBS_BEVELED;
    if (sBorderStyle == "I")
      return BBS_INSET;
    if (sBorderStyle == "U")
      return BBS_UNDERLINE;
  }

  CPDF_Array* pBorder = m_pAnnot->GetAnnotDict()->GetArrayBy("Border");
  if (pBorder) {
    if (pBorder->GetCount() >= 4) {
      CPDF_Array* pDP = pBorder->GetArrayAt(3);
      if (pDP && pDP->GetCount() > 0)
        return BBS_DASH;
    }
  }

  return BBS_SOLID;
}

CPDF_FormField* CPDF_InterForm::CheckRequiredFields(
    const std::vector<CPDF_FormField*>* fields,
    bool bIncludeOrExclude) const {
  int nCount = m_pFieldTree->m_Root.CountFields();
  for (int i = 0; i < nCount; ++i) {
    CPDF_FormField* pField = m_pFieldTree->m_Root.GetField(i);
    if (!pField)
      continue;

    int32_t iType = pField->GetType();
    if (iType == CPDF_FormField::PushButton ||
        iType == CPDF_FormField::CheckBox || iType == CPDF_FormField::ListBox) {
      continue;
    }
    uint32_t dwFlags = pField->GetFieldFlags();
    // TODO(thestig): Look up these magic numbers and add constants for them.
    if (dwFlags & 0x04)
      continue;

    bool bFind = true;
    if (fields)
      bFind = pdfium::ContainsValue(*fields, pField);
    if (bIncludeOrExclude == bFind) {
      CPDF_Dictionary* pFieldDict = pField->m_pDict;
      if ((dwFlags & 0x02) != 0 && pFieldDict->GetStringBy("V").IsEmpty())
        return pField;
    }
  }
  return nullptr;
}

static CPDF_Dictionary* FindAttrDict(CPDF_Object* pAttrs,
                                     const CFX_ByteStringC& owner,
                                     FX_FLOAT nLevel = 0.0F) {
  if (nLevel > nMaxRecursion)
    return nullptr;
  if (!pAttrs)
    return nullptr;

  CPDF_Dictionary* pDict = nullptr;
  if (pAttrs->IsDictionary()) {
    pDict = pAttrs->AsDictionary();
  } else if (CPDF_Stream* pStream = pAttrs->AsStream()) {
    pDict = pStream->GetDict();
  } else if (CPDF_Array* pArray = pAttrs->AsArray()) {
    for (uint32_t i = 0; i < pArray->GetCount(); i++) {
      CPDF_Object* pElement = pArray->GetDirectObjectAt(i);
      pDict = FindAttrDict(pElement, owner, nLevel + 1);
      if (pDict)
        return pDict;
    }
  }
  if (pDict && pDict->GetStringBy("O") == owner)
    return pDict;
  return nullptr;
}

void CPDF_FormField::LoadDA() {
  CPDF_Dictionary* pFormDict = m_pForm->m_pFormDict;
  if (!pFormDict)
    return;

  CFX_ByteString DA;
  if (CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict, "DA"))
    DA = pObj->GetString();

  if (DA.IsEmpty())
    DA = pFormDict->GetStringBy("DA");

  if (DA.IsEmpty())
    return;

  CPDF_Dictionary* pDR = pFormDict->GetDictBy("DR");
  if (!pDR)
    return;

  CPDF_Dictionary* pFont = pDR->GetDictBy("Font");
  if (!pFont)
    return;

  CPDF_SimpleParser syntax(DA.AsStringC());
  syntax.FindTagParamFromStart("Tf", 2);
  CFX_ByteString font_name(syntax.GetWord());
  CPDF_Dictionary* pFontDict = pFont->GetDictBy(font_name);
  if (!pFontDict)
    return;

  m_pFont = m_pForm->m_pDocument->LoadFont(pFontDict);
  m_FontSize = FX_atof(syntax.GetWord());
}

FX_BOOL FindInterFormFont(CPDF_Dictionary* pFormDict,
                          const CPDF_Font* pFont,
                          CFX_ByteString& csNameTag) {
  if (!pFormDict || !pFont) {
    return FALSE;
  }
  CPDF_Dictionary* pDR = pFormDict->GetDictBy("DR");
  if (!pDR) {
    return FALSE;
  }
  CPDF_Dictionary* pFonts = pDR->GetDictBy("Font");
  if (!pFonts) {
    return FALSE;
  }
  for (const auto& it : *pFonts) {
    const CFX_ByteString& csKey = it.first;
    CPDF_Object* pObj = it.second;
    if (!pObj) {
      continue;
    }
    CPDF_Dictionary* pElement = ToDictionary(pObj->GetDirect());
    if (!pElement)
      continue;
    if (pElement->GetStringBy("Type") != "Font") {
      continue;
    }
    if (pFont->GetFontDict() == pElement) {
      csNameTag = csKey;
      return TRUE;
    }
  }
  return FALSE;
}

CPDF_Font* GetInterFormFont(CPDF_Dictionary* pFormDict,
                            CPDF_Document* pDocument,
                            FX_DWORD index,
                            CFX_ByteString& csNameTag) {
  if (!pFormDict) {
    return NULL;
  }
  CPDF_Dictionary* pDR = pFormDict->GetDictBy("DR");
  if (!pDR) {
    return NULL;
  }
  CPDF_Dictionary* pFonts = pDR->GetDictBy("Font");
  if (!pFonts) {
    return NULL;
  }
  FX_DWORD dwCount = 0;
  for (const auto& it : *pFonts) {
    const CFX_ByteString& csKey = it.first;
    CPDF_Object* pObj = it.second;
    if (!pObj) {
      continue;
    }
    CPDF_Dictionary* pElement = ToDictionary(pObj->GetDirect());
    if (!pElement)
      continue;
    if (pElement->GetStringBy("Type") != "Font")
      continue;
    if (dwCount == index) {
      csNameTag = csKey;
      return pDocument->LoadFont(pElement);
    }
    dwCount++;
  }
  return NULL;
}

FX_BOOL CPDF_InterForm::ImportFromFDF(const CFDF_Document* pFDF,
                                      FX_BOOL bNotify) {
  if (!pFDF)
    return FALSE;

  CPDF_Dictionary* pMainDict = pFDF->GetRoot()->GetDictBy("FDF");
  if (!pMainDict)
    return FALSE;

  CPDF_Array* pFields = pMainDict->GetArrayBy("Fields");
  if (!pFields)
    return FALSE;

  m_bsEncoding = pMainDict->GetStringBy("Encoding");
  if (bNotify && m_pFormNotify && m_pFormNotify->BeforeFormImportData(this) < 0)
    return FALSE;

  for (size_t i = 0; i < pFields->GetCount(); i++) {
    CPDF_Dictionary* pField = pFields->GetDictAt(i);
    if (!pField)
      continue;

    FDF_ImportField(pField, L"", bNotify);
  }
  if (bNotify && m_pFormNotify)
    m_pFormNotify->AfterFormImportData(this);
  return TRUE;
}

void CPDF_StructElementImpl::LoadKid(uint32_t PageObjNum,
                                     CPDF_Object* pKidObj,
                                     CPDF_StructKid* pKid) {
  pKid->m_Type = CPDF_StructKid::Invalid;
  if (!pKidObj)
    return;

  if (pKidObj->IsNumber()) {
    if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
      return;
    }
    pKid->m_Type = CPDF_StructKid::PageContent;
    pKid->m_PageContent.m_ContentId = pKidObj->GetInteger();
    pKid->m_PageContent.m_PageObjNum = PageObjNum;
    return;
  }

  CPDF_Dictionary* pKidDict = pKidObj->AsDictionary();
  if (!pKidDict)
    return;

  if (CPDF_Reference* pRef = ToReference(pKidDict->GetObjectBy("Pg")))
    PageObjNum = pRef->GetRefObjNum();

  CFX_ByteString type = pKidDict->GetStringBy("Type");
  if (type == "MCR") {
    if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
      return;
    }
    pKid->m_Type = CPDF_StructKid::StreamContent;
    if (CPDF_Reference* pRef = ToReference(pKidDict->GetObjectBy("Stm"))) {
      pKid->m_StreamContent.m_RefObjNum = pRef->GetRefObjNum();
    } else {
      pKid->m_StreamContent.m_RefObjNum = 0;
    }
    pKid->m_StreamContent.m_PageObjNum = PageObjNum;
    pKid->m_StreamContent.m_ContentId = pKidDict->GetIntegerBy("MCID");
  } else if (type == "OBJR") {
    if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
      return;
    }
    pKid->m_Type = CPDF_StructKid::Object;
    if (CPDF_Reference* pObj = ToReference(pKidDict->GetObjectBy("Obj"))) {
      pKid->m_Object.m_RefObjNum = pObj->GetRefObjNum();
    } else {
      pKid->m_Object.m_RefObjNum = 0;
    }
    pKid->m_Object.m_PageObjNum = PageObjNum;
  } else {
    pKid->m_Type = CPDF_StructKid::Element;
    pKid->m_Element.m_pDict = pKidDict;
    if (!m_pTree->m_pPage) {
      pKid->m_Element.m_pElement =
          new CPDF_StructElementImpl(m_pTree, this, pKidDict);
    } else {
      pKid->m_Element.m_pElement = nullptr;
    }
  }
}

FX_BOOL CPDF_ViewerPreferences::PrintScaling() const {
  CPDF_Dictionary* pDict = m_pDoc->GetRoot();
  pDict = pDict->GetDictBy("ViewerPreferences");
  if (!pDict) {
    return TRUE;
  }
  return "None" != pDict->GetStringBy("PrintScaling");
}

CFX_ByteString CPDF_ViewerPreferences::Duplex() const {
  CPDF_Dictionary* pDict = m_pDoc->GetRoot();
  pDict = pDict->GetDictBy("ViewerPreferences");
  if (!pDict) {
    return "None";
  }
  return pDict->GetStringBy("Duplex");
}

FX_BOOL CPDF_ViewerPreferences::IsDirectionR2L() const {
  CPDF_Dictionary* pDict = m_pDoc->GetRoot();
  pDict = pDict->GetDictBy("ViewerPreferences");
  if (!pDict) {
    return FALSE;
  }
  return "R2L" == pDict->GetStringBy("Direction");
}

void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage,
                                  std::vector<CPDF_Dictionary*>* pList) {
  CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArrayBy("Annots");
  if (!pAnnotList)
    return;

  for (size_t i = 0; i < pAnnotList->GetCount(); ++i) {
    CPDF_Dictionary* pAnnot = pAnnotList->GetDictAt(i);
    bool add_link = (pAnnot && pAnnot->GetStringBy("Subtype") == "Link");
    // Add non-links as nullptrs to preserve z-order.
    pList->push_back(add_link ? pAnnot : nullptr);
  }
}