CPDF_Dictionary* CPDF_Document::FindPDFPage(CPDF_Dictionary* pPages,
int iPage,
int nPagesToGo,
int level) {
CPDF_Array* pKidList = pPages->GetArrayFor("Kids");
if (!pKidList)
return nPagesToGo == 0 ? pPages : nullptr;
if (level >= FX_MAX_PAGE_LEVEL)
return nullptr;
for (size_t i = 0; i < pKidList->GetCount(); i++) {
CPDF_Dictionary* pKid = pKidList->GetDictAt(i);
if (!pKid) {
nPagesToGo--;
continue;
}
if (pKid == pPages)
continue;
if (!pKid->KeyExist("Kids")) {
if (nPagesToGo == 0)
return pKid;
m_PageList.SetAt(iPage - nPagesToGo, pKid->GetObjNum());
nPagesToGo--;
} else {
int nPages = pKid->GetIntegerFor("Count");
if (nPagesToGo < nPages)
return FindPDFPage(pKid, iPage, nPagesToGo, level + 1);
nPagesToGo -= nPages;
}
}
return nullptr;
}
CPDF_TilingPattern::CPDF_TilingPattern(CPDF_Document* pDoc,
CPDF_Object* pPatternObj,
const CFX_Matrix& parentMatrix)
: CPDF_Pattern(TILING, pDoc, pPatternObj, parentMatrix) {
CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
m_Pattern2Form = pDict->GetMatrixFor("Matrix");
m_bColored = pDict->GetIntegerFor("PaintType") == 1;
m_Pattern2Form.Concat(parentMatrix);
}
void CPDF_PageObjectHolder::LoadTransInfo() {
if (!m_pFormDict) {
return;
}
CPDF_Dictionary* pGroup = m_pFormDict->GetDictFor("Group");
if (!pGroup) {
return;
}
if (pGroup->GetStringFor("S") != "Transparency") {
return;
}
m_Transparency |= PDFTRANS_GROUP;
if (pGroup->GetIntegerFor("I")) {
m_Transparency |= PDFTRANS_ISOLATED;
}
if (pGroup->GetIntegerFor("K")) {
m_Transparency |= PDFTRANS_KNOCKOUT;
}
}
int CPDF_FormField::GetMaxLen() const {
if (CPDF_Object* pObj = FPDF_GetFieldAttr(m_pDict, "MaxLen"))
return pObj->GetInteger();
for (int i = 0; i < m_ControlList.GetSize(); i++) {
CPDF_FormControl* pControl = m_ControlList.GetAt(i);
if (!pControl)
continue;
CPDF_Dictionary* pWidgetDict = pControl->m_pWidgetDict;
if (pWidgetDict->KeyExist("MaxLen"))
return pWidgetDict->GetIntegerFor("MaxLen");
}
return 0;
}
void CPDF_Document::DeletePage(int iPage) {
CPDF_Dictionary* pPages = GetPagesDict();
if (!pPages)
return;
int nPages = pPages->GetIntegerFor("Count");
if (iPage < 0 || iPage >= nPages)
return;
std::set<CPDF_Dictionary*> stack = {pPages};
if (InsertDeletePDFPage(this, pPages, iPage, nullptr, FALSE, &stack) < 0)
return;
m_PageList.RemoveAt(iPage);
}
static FX_BOOL LoadCryptInfo(CPDF_Dictionary* pEncryptDict,
const CFX_ByteString& name,
int& cipher,
int& keylen) {
int Version = pEncryptDict->GetIntegerFor("V");
cipher = FXCIPHER_RC4;
keylen = 0;
if (Version >= 4) {
CPDF_Dictionary* pCryptFilters = pEncryptDict->GetDictFor("CF");
if (!pCryptFilters) {
return FALSE;
}
if (name == "Identity") {
cipher = FXCIPHER_NONE;
} else {
CPDF_Dictionary* pDefFilter = pCryptFilters->GetDictFor(name);
if (!pDefFilter) {
return FALSE;
}
int nKeyBits = 0;
if (Version == 4) {
nKeyBits = pDefFilter->GetIntegerFor("Length", 0);
if (nKeyBits == 0) {
nKeyBits = pEncryptDict->GetIntegerFor("Length", 128);
}
} else {
nKeyBits = pEncryptDict->GetIntegerFor("Length", 256);
}
if (nKeyBits < 40) {
nKeyBits *= 8;
}
keylen = nKeyBits / 8;
CFX_ByteString cipher_name = pDefFilter->GetStringFor("CFM");
if (cipher_name == "AESV2" || cipher_name == "AESV3") {
cipher = FXCIPHER_AES;
}
}
} else {
keylen = Version > 1 ? pEncryptDict->GetIntegerFor("Length", 40) / 8 : 5;
}
if (keylen > 32 || keylen < 0) {
return FALSE;
}
return TRUE;
}
bool CPDF_TilingPattern::Load() {
if (m_pForm)
return true;
CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
if (!pDict)
return false;
m_bColored = pDict->GetIntegerFor("PaintType") == 1;
m_XStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumberFor("XStep"));
m_YStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumberFor("YStep"));
CPDF_Stream* pStream = m_pPatternObj->AsStream();
if (!pStream)
return false;
m_pForm.reset(new CPDF_Form(m_pDocument, nullptr, pStream));
m_pForm->ParseContent(nullptr, &m_ParentMatrix, nullptr);
m_BBox = pDict->GetRectFor("BBox");
return true;
}
int ParserAnnots(CPDF_Document* pSourceDoc,
CPDF_Dictionary* pPageDic,
CPDF_RectArray* pRectArray,
CPDF_ObjectArray* pObjectArray,
int nUsage) {
if (!pSourceDoc || !pPageDic)
return FLATTEN_FAIL;
GetContentsRect(pSourceDoc, pPageDic, pRectArray);
CPDF_Array* pAnnots = pPageDic->GetArrayFor("Annots");
if (!pAnnots)
return FLATTEN_NOTHINGTODO;
uint32_t dwSize = pAnnots->GetCount();
for (int i = 0; i < (int)dwSize; i++) {
CPDF_Dictionary* pAnnotDic = ToDictionary(pAnnots->GetDirectObjectAt(i));
if (!pAnnotDic)
continue;
CFX_ByteString sSubtype = pAnnotDic->GetStringFor("Subtype");
if (sSubtype == "Popup")
continue;
int nAnnotFlag = pAnnotDic->GetIntegerFor("F");
if (nAnnotFlag & ANNOTFLAG_HIDDEN)
continue;
if (nUsage == FLAT_NORMALDISPLAY) {
if (nAnnotFlag & ANNOTFLAG_INVISIBLE)
continue;
ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray);
} else {
if (nAnnotFlag & ANNOTFLAG_PRINT)
ParserStream(pPageDic, pAnnotDic, pRectArray, pObjectArray);
}
}
return FLATTEN_SUCCESS;
}
bool CPDF_DataAvail::CheckPageCount(DownloadHints* pHints) {
bool bExist = false;
std::unique_ptr<CPDF_Object> pPages =
GetObject(m_PagesObjNum, pHints, &bExist);
if (!bExist) {
m_docStatus = PDF_DATAAVAIL_ERROR;
return false;
}
if (!pPages)
return false;
CPDF_Dictionary* pPagesDict = pPages->GetDict();
if (!pPagesDict) {
m_docStatus = PDF_DATAAVAIL_ERROR;
return false;
}
if (!pPagesDict->KeyExist("Kids"))
return true;
return pPagesDict->GetIntegerFor("Count") > 0;
}
bool CPDF_ShadingPattern::Load() {
if (m_ShadingType != kInvalidShading)
return true;
CPDF_Dictionary* pShadingDict =
m_pShadingObj ? m_pShadingObj->GetDict() : nullptr;
if (!pShadingDict)
return false;
m_pFunctions.clear();
CPDF_Object* pFunc = pShadingDict->GetDirectObjectFor("Function");
if (pFunc) {
if (CPDF_Array* pArray = pFunc->AsArray()) {
m_pFunctions.resize(std::min<size_t>(pArray->GetCount(), 4));
for (size_t i = 0; i < m_pFunctions.size(); ++i)
m_pFunctions[i] = CPDF_Function::Load(pArray->GetDirectObjectAt(i));
} else {
m_pFunctions.push_back(CPDF_Function::Load(pFunc));
}
}
CPDF_Object* pCSObj = pShadingDict->GetDirectObjectFor("ColorSpace");
if (!pCSObj)
return false;
CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData();
m_pCS = pDocPageData->GetColorSpace(pCSObj, nullptr);
if (m_pCS)
m_pCountedCS = pDocPageData->FindColorSpacePtr(m_pCS->GetArray());
m_ShadingType = ToShadingType(pShadingDict->GetIntegerFor("ShadingType"));
// We expect to have a stream if our shading type is a mesh.
if (IsMeshShading() && !ToStream(m_pShadingObj))
return false;
return true;
}
bool CPDF_CIDFont::Load() {
if (m_pFontDict->GetStringFor("Subtype") == "TrueType") {
LoadGB2312();
return true;
}
CPDF_Array* pFonts = m_pFontDict->GetArrayFor("DescendantFonts");
if (!pFonts || pFonts->GetCount() != 1)
return false;
CPDF_Dictionary* pCIDFontDict = pFonts->GetDictAt(0);
if (!pCIDFontDict)
return false;
m_BaseFont = pCIDFontDict->GetStringFor("BaseFont");
if ((m_BaseFont.Compare("CourierStd") == 0 ||
m_BaseFont.Compare("CourierStd-Bold") == 0 ||
m_BaseFont.Compare("CourierStd-BoldOblique") == 0 ||
m_BaseFont.Compare("CourierStd-Oblique") == 0) &&
!IsEmbedded()) {
m_bAdobeCourierStd = true;
}
CPDF_Dictionary* pFontDesc = pCIDFontDict->GetDictFor("FontDescriptor");
if (pFontDesc)
LoadFontDescriptor(pFontDesc);
CPDF_Object* pEncoding = m_pFontDict->GetDirectObjectFor("Encoding");
if (!pEncoding)
return false;
CFX_ByteString subtype = pCIDFontDict->GetStringFor("Subtype");
m_bType1 = (subtype == "CIDFontType0");
CPDF_CMapManager& manager = GetFontGlobals()->m_CMapManager;
if (pEncoding->IsName()) {
CFX_ByteString cmap = pEncoding->GetString();
bool bPromptCJK = m_pFontFile && m_bType1;
m_pCMap = manager.GetPredefinedCMap(cmap, bPromptCJK);
if (!m_pCMap)
return false;
} else if (CPDF_Stream* pStream = pEncoding->AsStream()) {
m_pCMap = pdfium::MakeUnique<CPDF_CMap>();
CPDF_StreamAcc acc;
acc.LoadAllData(pStream, false);
m_pCMap->LoadEmbedded(acc.GetData(), acc.GetSize());
} else {
return false;
}
m_Charset = m_pCMap->m_Charset;
if (m_Charset == CIDSET_UNKNOWN) {
CPDF_Dictionary* pCIDInfo = pCIDFontDict->GetDictFor("CIDSystemInfo");
if (pCIDInfo) {
m_Charset =
CharsetFromOrdering(pCIDInfo->GetStringFor("Ordering").AsStringC());
}
}
if (m_Charset != CIDSET_UNKNOWN) {
bool bPromptCJK = !m_pFontFile && (m_pCMap->m_Coding == CIDCODING_CID ||
pCIDFontDict->KeyExist("W"));
m_pCID2UnicodeMap = manager.GetCID2UnicodeMap(m_Charset, bPromptCJK);
}
if (m_Font.GetFace()) {
if (m_bType1)
FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE);
else
FT_UseCIDCharmap(m_Font.GetFace(), m_pCMap->m_Coding);
}
m_DefaultWidth = pCIDFontDict->GetIntegerFor("DW", 1000);
CPDF_Array* pWidthArray = pCIDFontDict->GetArrayFor("W");
if (pWidthArray)
LoadMetricsArray(pWidthArray, &m_WidthList, 1);
if (!IsEmbedded())
LoadSubstFont();
if (m_pFontFile || (GetSubstFont()->m_SubstFlags & FXFONT_SUBST_EXACT)) {
CPDF_Object* pmap = pCIDFontDict->GetDirectObjectFor("CIDToGIDMap");
if (pmap) {
if (CPDF_Stream* pStream = pmap->AsStream()) {
m_pStreamAcc = pdfium::MakeUnique<CPDF_StreamAcc>();
m_pStreamAcc->LoadAllData(pStream, false);
} else if (pmap->GetString() == "Identity") {
#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
if (m_pFontFile)
m_bCIDIsGID = true;
#else
m_bCIDIsGID = true;
#endif
}
}
}
CheckFontMetrics();
if (IsVertWriting()) {
pWidthArray = pCIDFontDict->GetArrayFor("W2");
if (pWidthArray)
LoadMetricsArray(pWidthArray, &m_VertMetrics, 3);
CPDF_Array* pDefaultArray = pCIDFontDict->GetArrayFor("DW2");
if (pDefaultArray) {
m_DefaultVY = pDefaultArray->GetIntegerAt(0);
m_DefaultW1 = pDefaultArray->GetIntegerAt(1);
} else {
m_DefaultVY = 880;
m_DefaultW1 = -1000;
}
}
return true;
}