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-rw-r--r--fpdfsdk/fpdf_ppo.cpp104
1 files changed, 54 insertions, 50 deletions
diff --git a/fpdfsdk/fpdf_ppo.cpp b/fpdfsdk/fpdf_ppo.cpp
index b0d97e0360..1c9550a54a 100644
--- a/fpdfsdk/fpdf_ppo.cpp
+++ b/fpdfsdk/fpdf_ppo.cpp
@@ -134,20 +134,20 @@ NupPageSettings NupState::CalculateNewPagePosition(const CFX_SizeF& pagesize) {
return CalculatePageEdit(subX, subY, pagesize);
}
-CPDF_Object* PageDictGetInheritableTag(CPDF_Dictionary* pDict,
- const ByteString& bsSrcTag) {
+const CPDF_Object* PageDictGetInheritableTag(const CPDF_Dictionary* pDict,
+ const ByteString& bsSrcTag) {
if (!pDict || bsSrcTag.IsEmpty())
return nullptr;
if (!pDict->KeyExist("Parent") || !pDict->KeyExist("Type"))
return nullptr;
- CPDF_Object* pType = pDict->GetObjectFor("Type")->GetDirect();
+ const CPDF_Object* pType = pDict->GetObjectFor("Type")->GetDirect();
if (!ToName(pType))
return nullptr;
if (pType->GetString().Compare("Page"))
return nullptr;
- CPDF_Dictionary* pp =
+ const CPDF_Dictionary* pp =
ToDictionary(pDict->GetObjectFor("Parent")->GetDirect());
if (!pp)
return nullptr;
@@ -165,41 +165,44 @@ CPDF_Object* PageDictGetInheritableTag(CPDF_Dictionary* pDict,
return nullptr;
}
-CFX_FloatRect GetMediaBox(CPDF_Dictionary* pPageDict) {
- CPDF_Object* pMediaBox = PageDictGetInheritableTag(pPageDict, "MediaBox");
+CFX_FloatRect GetMediaBox(const CPDF_Dictionary* pPageDict) {
+ const CPDF_Object* pMediaBox =
+ PageDictGetInheritableTag(pPageDict, "MediaBox");
CPDF_Array* pArray = ToArray(pMediaBox->GetDirect());
if (!pArray)
return CFX_FloatRect();
return pArray->GetRect();
}
-CFX_FloatRect GetCropBox(CPDF_Dictionary* pPageDict) {
+CFX_FloatRect GetCropBox(const CPDF_Dictionary* pPageDict) {
if (pPageDict->KeyExist("CropBox"))
return pPageDict->GetRectFor("CropBox");
return GetMediaBox(pPageDict);
}
-CFX_FloatRect GetTrimBox(CPDF_Dictionary* pPageDict) {
+CFX_FloatRect GetTrimBox(const CPDF_Dictionary* pPageDict) {
if (pPageDict->KeyExist("TrimBox"))
return pPageDict->GetRectFor("TrimBox");
return GetCropBox(pPageDict);
}
-CPDF_Object* GetPageOrganizerPageContent(CPDF_Dictionary* pPageDict) {
+const CPDF_Object* GetPageOrganizerPageContent(
+ const CPDF_Dictionary* pPageDict) {
return pPageDict ? pPageDict->GetDirectObjectFor("Contents") : nullptr;
}
-bool CopyInheritable(CPDF_Dictionary* pCurPageDict,
- CPDF_Dictionary* pSrcPageDict,
+bool CopyInheritable(CPDF_Dictionary* pDestPageDict,
+ const CPDF_Dictionary* pSrcPageDict,
const ByteString& key) {
- if (pCurPageDict->KeyExist(key))
+ if (pDestPageDict->KeyExist(key))
return true;
- CPDF_Object* pInheritable = PageDictGetInheritableTag(pSrcPageDict, key);
+ const CPDF_Object* pInheritable =
+ PageDictGetInheritableTag(pSrcPageDict, key);
if (!pInheritable)
return false;
- pCurPageDict->SetFor(key, pInheritable->Clone());
+ pDestPageDict->SetFor(key, pInheritable->Clone());
return true;
}
@@ -462,9 +465,9 @@ bool CPDF_PageExporter::ExportPage(const std::vector<uint32_t>& pageNums,
int curpage = nIndex;
auto pObjNumberMap = pdfium::MakeUnique<ObjectNumberMap>();
for (size_t i = 0; i < pageNums.size(); ++i) {
- CPDF_Dictionary* pCurPageDict = dest()->CreateNewPage(curpage);
- CPDF_Dictionary* pSrcPageDict = src()->GetPage(pageNums[i] - 1);
- if (!pSrcPageDict || !pCurPageDict)
+ CPDF_Dictionary* pDestPageDict = dest()->CreateNewPage(curpage);
+ const CPDF_Dictionary* pSrcPageDict = src()->GetPage(pageNums[i] - 1);
+ if (!pSrcPageDict || !pDestPageDict)
return false;
// Clone the page dictionary
@@ -474,43 +477,43 @@ bool CPDF_PageExporter::ExportPage(const std::vector<uint32_t>& pageNums,
continue;
CPDF_Object* pObj = it.second.get();
- pCurPageDict->SetFor(cbSrcKeyStr, pObj->Clone());
+ pDestPageDict->SetFor(cbSrcKeyStr, pObj->Clone());
}
// inheritable item
// Even though some entries are required by the PDF spec, there exist
// PDFs that omit them. Set some defaults in this case.
// 1 MediaBox - required
- if (!CopyInheritable(pCurPageDict, pSrcPageDict, "MediaBox")) {
+ if (!CopyInheritable(pDestPageDict, pSrcPageDict, "MediaBox")) {
// Search for "CropBox" in the source page dictionary.
// If it does not exist, use the default letter size.
- CPDF_Object* pInheritable =
+ const CPDF_Object* pInheritable =
PageDictGetInheritableTag(pSrcPageDict, "CropBox");
if (pInheritable) {
- pCurPageDict->SetFor("MediaBox", pInheritable->Clone());
+ pDestPageDict->SetFor("MediaBox", pInheritable->Clone());
} else {
// Make the default size letter size (8.5"x11")
static const CFX_FloatRect kDefaultLetterRect(0, 0, 612, 792);
- pCurPageDict->SetRectFor("MediaBox", kDefaultLetterRect);
+ pDestPageDict->SetRectFor("MediaBox", kDefaultLetterRect);
}
}
// 2 Resources - required
- if (!CopyInheritable(pCurPageDict, pSrcPageDict, "Resources")) {
+ if (!CopyInheritable(pDestPageDict, pSrcPageDict, "Resources")) {
// Use a default empty resources if it does not exist.
- pCurPageDict->SetNewFor<CPDF_Dictionary>("Resources");
+ pDestPageDict->SetNewFor<CPDF_Dictionary>("Resources");
}
// 3 CropBox - optional
- CopyInheritable(pCurPageDict, pSrcPageDict, "CropBox");
+ CopyInheritable(pDestPageDict, pSrcPageDict, "CropBox");
// 4 Rotate - optional
- CopyInheritable(pCurPageDict, pSrcPageDict, "Rotate");
+ CopyInheritable(pDestPageDict, pSrcPageDict, "Rotate");
// Update the reference
uint32_t dwOldPageObj = pSrcPageDict->GetObjNum();
- uint32_t dwNewPageObj = pCurPageDict->GetObjNum();
+ uint32_t dwNewPageObj = pDestPageDict->GetObjNum();
(*pObjNumberMap)[dwOldPageObj] = dwNewPageObj;
- UpdateReference(pCurPageDict, pObjNumberMap.get());
+ UpdateReference(pDestPageDict, pObjNumberMap.get());
++curpage;
}
@@ -547,16 +550,16 @@ class CPDF_NPageToOneExporter : public CPDF_PageOrganizer {
// Creates a xobject from the source page dictionary, and appends the
// bsContent string with the xobject reference surrounded by the
// transformation matrix.
- void AddSubPage(CPDF_Dictionary* pPageDict,
+ void AddSubPage(const CPDF_Dictionary* pSrcPageDict,
const NupPageSettings& settings,
ObjectNumberMap* pObjNumberMap,
PageXObjectMap* pPageXObjectMap,
XObjectNameNumberMap* pXObjNameNumberMap,
ByteString* bsContent);
- uint32_t MakeXObject(CPDF_Dictionary* pSrcPageDict,
+ uint32_t MakeXObject(const CPDF_Dictionary* pSrcPageDict,
ObjectNumberMap* pObjNumberMap);
- void FinishPage(CPDF_Dictionary* pCurPageDict,
+ void FinishPage(CPDF_Dictionary* pDestPageDict,
const ByteString& bsContent,
const XObjectNameNumberMap& xObjNameNumberMap);
@@ -600,11 +603,11 @@ bool CPDF_NPageToOneExporter::ExportNPagesToOne(
for (size_t outerPage = 0; outerPage < pageNums.size();
outerPage += numPagesPerSheet) {
// Create a new page
- CPDF_Dictionary* pCurPageDict = dest()->CreateNewPage(curpage);
- if (!pCurPageDict)
+ CPDF_Dictionary* pDestPageDict = dest()->CreateNewPage(curpage);
+ if (!pDestPageDict)
return false;
- pCurPageDict->SetRectFor("MediaBox", destPageRect);
+ pDestPageDict->SetRectFor("MediaBox", destPageRect);
ByteString bsContent;
size_t innerPageMax =
std::min(outerPage + numPagesPerSheet, pageNums.size());
@@ -623,7 +626,7 @@ bool CPDF_NPageToOneExporter::ExportNPagesToOne(
}
// Finish up the current page.
- FinishPage(pCurPageDict, bsContent, xObjNameNumberMap);
+ FinishPage(pDestPageDict, bsContent, xObjNameNumberMap);
++curpage;
}
@@ -631,13 +634,13 @@ bool CPDF_NPageToOneExporter::ExportNPagesToOne(
}
void CPDF_NPageToOneExporter::AddSubPage(
- CPDF_Dictionary* pPageDict,
+ const CPDF_Dictionary* pSrcPageDict,
const NupPageSettings& settings,
ObjectNumberMap* pObjNumberMap,
PageXObjectMap* pPageXObjectMap,
XObjectNameNumberMap* pXObjNameNumberMap,
ByteString* bsContent) {
- uint32_t dwPageObjnum = pPageDict->GetObjNum();
+ uint32_t dwPageObjnum = pSrcPageDict->GetObjNum();
ByteString bsXObjectName;
const auto it = pPageXObjectMap->find(dwPageObjnum);
if (it != pPageXObjectMap->end()) {
@@ -646,7 +649,7 @@ void CPDF_NPageToOneExporter::AddSubPage(
++m_xobjectNum;
// TODO(Xlou): A better name schema to avoid possible object name collision.
bsXObjectName = ByteString::Format("X%d", m_xobjectNum);
- m_xobjs[bsXObjectName] = MakeXObject(pPageDict, pObjNumberMap);
+ m_xobjs[bsXObjectName] = MakeXObject(pSrcPageDict, pObjNumberMap);
(*pPageXObjectMap)[dwPageObjnum] = bsXObjectName;
}
(*pXObjNameNumberMap)[bsXObjectName] = m_xobjs[bsXObjectName];
@@ -663,11 +666,12 @@ void CPDF_NPageToOneExporter::AddSubPage(
*bsContent += ByteString(contentStream);
}
-uint32_t CPDF_NPageToOneExporter::MakeXObject(CPDF_Dictionary* pSrcPageDict,
- ObjectNumberMap* pObjNumberMap) {
+uint32_t CPDF_NPageToOneExporter::MakeXObject(
+ const CPDF_Dictionary* pSrcPageDict,
+ ObjectNumberMap* pObjNumberMap) {
ASSERT(pSrcPageDict);
- CPDF_Object* pSrcContentObj = GetPageOrganizerPageContent(pSrcPageDict);
+ const CPDF_Object* pSrcContentObj = GetPageOrganizerPageContent(pSrcPageDict);
CPDF_Stream* pNewXObject = dest()->NewIndirect<CPDF_Stream>(
nullptr, 0,
pdfium::MakeUnique<CPDF_Dictionary>(dest()->GetByteStringPool()));
@@ -688,7 +692,7 @@ uint32_t CPDF_NPageToOneExporter::MakeXObject(CPDF_Dictionary* pSrcPageDict,
pNewXObjectDict->SetRectFor("BBox", GetTrimBox(pSrcPageDict));
// TODO(xlou): add matrix field to pNewXObjectDict.
- if (CPDF_Array* pSrcContentArray = ToArray(pSrcContentObj)) {
+ if (const CPDF_Array* pSrcContentArray = ToArray(pSrcContentObj)) {
ByteString bsSrcContentStream;
for (size_t i = 0; i < pSrcContentArray->GetCount(); ++i) {
CPDF_Stream* pStream = pSrcContentArray->GetStreamAt(i);
@@ -701,7 +705,7 @@ uint32_t CPDF_NPageToOneExporter::MakeXObject(CPDF_Dictionary* pSrcPageDict,
pNewXObject->SetDataAndRemoveFilter(bsSrcContentStream.raw_str(),
bsSrcContentStream.GetLength());
} else {
- CPDF_Stream* pStream = pSrcContentObj->AsStream();
+ const CPDF_Stream* pStream = pSrcContentObj->AsStream();
auto pAcc = pdfium::MakeRetain<CPDF_StreamAcc>(pStream);
pAcc->LoadAllDataFiltered();
ByteString bsStream(pAcc->GetData(), pAcc->GetSize());
@@ -713,14 +717,14 @@ uint32_t CPDF_NPageToOneExporter::MakeXObject(CPDF_Dictionary* pSrcPageDict,
}
void CPDF_NPageToOneExporter::FinishPage(
- CPDF_Dictionary* pCurPageDict,
+ CPDF_Dictionary* pDestPageDict,
const ByteString& bsContent,
const XObjectNameNumberMap& xObjNameNumberMap) {
- ASSERT(pCurPageDict);
+ ASSERT(pDestPageDict);
- CPDF_Dictionary* pRes = pCurPageDict->GetDictFor("Resources");
+ CPDF_Dictionary* pRes = pDestPageDict->GetDictFor("Resources");
if (!pRes)
- pRes = pCurPageDict->SetNewFor<CPDF_Dictionary>("Resources");
+ pRes = pDestPageDict->SetNewFor<CPDF_Dictionary>("Resources");
CPDF_Dictionary* pPageXObject = pRes->GetDictFor("XObject");
if (!pPageXObject)
@@ -733,8 +737,8 @@ void CPDF_NPageToOneExporter::FinishPage(
CPDF_Stream* pStream =
dest()->NewIndirect<CPDF_Stream>(nullptr, 0, std::move(pDict));
pStream->SetData(bsContent.raw_str(), bsContent.GetLength());
- pCurPageDict->SetNewFor<CPDF_Reference>("Contents", dest(),
- pStream->GetObjNum());
+ pDestPageDict->SetNewFor<CPDF_Reference>("Contents", dest(),
+ pStream->GetObjNum());
}
} // namespace
@@ -812,7 +816,7 @@ FPDF_CopyViewerPreferences(FPDF_DOCUMENT dest_doc, FPDF_DOCUMENT src_doc) {
if (!pSrcDoc)
return false;
- CPDF_Dictionary* pSrcDict = pSrcDoc->GetRoot();
+ const CPDF_Dictionary* pSrcDict = pSrcDoc->GetRoot();
pSrcDict = pSrcDict->GetDictFor("ViewerPreferences");
if (!pSrcDict)
return false;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 11:21:48 +0000