diff options
Diffstat (limited to 'core/src/fpdfdoc/doc_tagged.cpp')
| -rw-r--r-- | core/src/fpdfdoc/doc_tagged.cpp | 896 |
1 files changed, 448 insertions, 448 deletions
diff --git a/core/src/fpdfdoc/doc_tagged.cpp b/core/src/fpdfdoc/doc_tagged.cpp index 95ae8d581e..551042037b 100644 --- a/core/src/fpdfdoc/doc_tagged.cpp +++ b/core/src/fpdfdoc/doc_tagged.cpp @@ -1,448 +1,448 @@ -// 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/fpdfapi/fpdf_parser.h"
-#include "../../include/fpdfapi/fpdf_page.h"
-#include "../../include/fpdfdoc/fpdf_tagged.h"
-#include "tagged_int.h"
-const int nMaxRecursion = 32;
-static FX_BOOL IsTagged(const CPDF_Document* pDoc)
-{
- CPDF_Dictionary* pCatalog = pDoc->GetRoot();
- CPDF_Dictionary* pMarkInfo = pCatalog->GetDict(FX_BSTRC("MarkInfo"));
- return pMarkInfo != NULL && pMarkInfo->GetInteger(FX_BSTRC("Marked"));
-}
-CPDF_StructTree* CPDF_StructTree::LoadPage(const CPDF_Document* pDoc, const CPDF_Dictionary* pPageDict)
-{
- if (!IsTagged(pDoc)) {
- return NULL;
- }
- CPDF_StructTreeImpl* pTree = FX_NEW CPDF_StructTreeImpl(pDoc);
- if (pTree == NULL) {
- return NULL;
- }
- pTree->LoadPageTree(pPageDict);
- return pTree;
-}
-CPDF_StructTree* CPDF_StructTree::LoadDoc(const CPDF_Document* pDoc)
-{
- if (!IsTagged(pDoc)) {
- return NULL;
- }
- CPDF_StructTreeImpl* pTree = FX_NEW CPDF_StructTreeImpl(pDoc);
- if (pTree == NULL) {
- return NULL;
- }
- pTree->LoadDocTree();
- return pTree;
-}
-CPDF_StructTreeImpl::CPDF_StructTreeImpl(const CPDF_Document* pDoc)
-{
- CPDF_Dictionary* pCatalog = pDoc->GetRoot();
- m_pTreeRoot = pCatalog->GetDict(FX_BSTRC("StructTreeRoot"));
- if (m_pTreeRoot == NULL) {
- return;
- }
- m_pRoleMap = m_pTreeRoot->GetDict(FX_BSTRC("RoleMap"));
-}
-CPDF_StructTreeImpl::~CPDF_StructTreeImpl()
-{
- for (int i = 0; i < m_Kids.GetSize(); i ++)
- if (m_Kids[i]) {
- m_Kids[i]->Release();
- }
-}
-void CPDF_StructTreeImpl::LoadDocTree()
-{
- m_pPage = NULL;
- if (m_pTreeRoot == NULL) {
- return;
- }
- CPDF_Object* pKids = m_pTreeRoot->GetElementValue(FX_BSTRC("K"));
- if (pKids == NULL) {
- return;
- }
- if (pKids->GetType() == PDFOBJ_DICTIONARY) {
- CPDF_StructElementImpl* pStructElementImpl = FX_NEW CPDF_StructElementImpl(this, NULL, (CPDF_Dictionary*)pKids);
- if (pStructElementImpl == NULL) {
- return;
- }
- m_Kids.Add(pStructElementImpl);
- return;
- }
- if (pKids->GetType() != PDFOBJ_ARRAY) {
- return;
- }
- CPDF_Array* pArray = (CPDF_Array*)pKids;
- for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) {
- CPDF_Dictionary* pKid = pArray->GetDict(i);
- CPDF_StructElementImpl* pStructElementImpl = FX_NEW CPDF_StructElementImpl(this, NULL, pKid);
- if (pStructElementImpl == NULL) {
- return;
- }
- m_Kids.Add(pStructElementImpl);
- }
-}
-void CPDF_StructTreeImpl::LoadPageTree(const CPDF_Dictionary* pPageDict)
-{
- m_pPage = pPageDict;
- if (m_pTreeRoot == NULL) {
- return;
- }
- CPDF_Object* pKids = m_pTreeRoot->GetElementValue(FX_BSTRC("K"));
- if (pKids == NULL) {
- return;
- }
- FX_DWORD dwKids = 0;
- if (pKids->GetType() == PDFOBJ_DICTIONARY) {
- dwKids = 1;
- } else if (pKids->GetType() == PDFOBJ_ARRAY) {
- dwKids = ((CPDF_Array*)pKids)->GetCount();
- } else {
- return;
- }
- FX_DWORD i;
- m_Kids.SetSize(dwKids);
- for (i = 0; i < dwKids; i ++) {
- m_Kids[i] = NULL;
- }
- CFX_MapPtrToPtr element_map;
- CPDF_Dictionary* pParentTree = m_pTreeRoot->GetDict(FX_BSTRC("ParentTree"));
- if (pParentTree == NULL) {
- return;
- }
- CPDF_NumberTree parent_tree(pParentTree);
- int parents_id = pPageDict->GetInteger(FX_BSTRC("StructParents"), -1);
- if (parents_id >= 0) {
- CPDF_Object* pParents = parent_tree.LookupValue(parents_id);
- if (pParents == NULL || pParents->GetType() != PDFOBJ_ARRAY) {
- return;
- }
- CPDF_Array* pParentArray = (CPDF_Array*)pParents;
- for (i = 0; i < pParentArray->GetCount(); i ++) {
- CPDF_Dictionary* pParent = pParentArray->GetDict(i);
- if (pParent == NULL) {
- continue;
- }
- AddPageNode(pParent, element_map);
- }
- }
-}
-CPDF_StructElementImpl* CPDF_StructTreeImpl::AddPageNode(CPDF_Dictionary* pDict, CFX_MapPtrToPtr& map, int nLevel)
-{
- if (nLevel > nMaxRecursion) {
- return NULL;
- }
- CPDF_StructElementImpl* pElement = NULL;
- if (map.Lookup(pDict, (FX_LPVOID&)pElement)) {
- return pElement;
- }
- pElement = FX_NEW CPDF_StructElementImpl(this, NULL, pDict);
- if (pElement == NULL) {
- return NULL;
- }
- map.SetAt(pDict, pElement);
- CPDF_Dictionary* pParent = pDict->GetDict(FX_BSTRC("P"));
- if (pParent == NULL || pParent->GetString(FX_BSTRC("Type")) == FX_BSTRC("StructTreeRoot")) {
- if (!AddTopLevelNode(pDict, pElement)) {
- pElement->Release();
- map.RemoveKey(pDict);
- }
- } else {
- CPDF_StructElementImpl* pParentElement = AddPageNode(pParent, map, nLevel + 1);
- FX_BOOL bSave = FALSE;
- for (int i = 0; i < pParentElement->m_Kids.GetSize(); i ++) {
- if (pParentElement->m_Kids[i].m_Type != CPDF_StructKid::Element) {
- continue;
- }
- if (pParentElement->m_Kids[i].m_Element.m_pDict != pDict) {
- continue;
- }
- pParentElement->m_Kids[i].m_Element.m_pElement = pElement->Retain();
- bSave = TRUE;
- }
- if (!bSave) {
- pElement->Release();
- map.RemoveKey(pDict);
- }
- }
- return pElement;
-}
-FX_BOOL CPDF_StructTreeImpl::AddTopLevelNode(CPDF_Dictionary* pDict, CPDF_StructElementImpl* pElement)
-{
- CPDF_Object *pObj = m_pTreeRoot->GetElementValue(FX_BSTRC("K"));
- if (!pObj) {
- return FALSE;
- }
- if (pObj->GetType() == PDFOBJ_DICTIONARY) {
- if (pObj->GetObjNum() == pDict->GetObjNum()) {
- if (m_Kids[0]) {
- m_Kids[0]->Release();
- }
- m_Kids[0] = pElement->Retain();
- } else {
- return FALSE;
- }
- }
- if (pObj->GetType() == PDFOBJ_ARRAY) {
- CPDF_Array* pTopKids = (CPDF_Array*)pObj;
- FX_DWORD i;
- FX_BOOL bSave = FALSE;
- for (i = 0; i < pTopKids->GetCount(); i ++) {
- CPDF_Reference* pKidRef = (CPDF_Reference*)pTopKids->GetElement(i);
- if (pKidRef->GetType() != PDFOBJ_REFERENCE || pKidRef->GetRefObjNum() != pDict->GetObjNum()) {
- continue;
- }
- if (m_Kids[i]) {
- m_Kids[i]->Release();
- }
- m_Kids[i] = pElement->Retain();
- bSave = TRUE;
- }
- if (!bSave) {
- return FALSE;
- }
- }
- return TRUE;
-}
-CPDF_StructElementImpl::CPDF_StructElementImpl(CPDF_StructTreeImpl* pTree, CPDF_StructElementImpl* pParent, CPDF_Dictionary* pDict)
- : m_RefCount(0)
-{
- m_pTree = pTree;
- m_pDict = pDict;
- m_Type = pDict->GetString(FX_BSTRC("S"));
- CFX_ByteString mapped = pTree->m_pRoleMap->GetString(m_Type);
- if (!mapped.IsEmpty()) {
- m_Type = mapped;
- }
- m_pParent = pParent;
- LoadKids(pDict);
-}
-CPDF_StructElementImpl::~CPDF_StructElementImpl()
-{
- for (int i = 0; i < m_Kids.GetSize(); i ++) {
- if (m_Kids[i].m_Type == CPDF_StructKid::Element && m_Kids[i].m_Element.m_pElement) {
- ((CPDF_StructElementImpl*)m_Kids[i].m_Element.m_pElement)->Release();
- }
- }
-}
-CPDF_StructElementImpl* CPDF_StructElementImpl::Retain()
-{
- m_RefCount++;
- return this;
-}
-void CPDF_StructElementImpl::Release()
-{
- if(--m_RefCount < 1) {
- delete this;
- }
-}
-void CPDF_StructElementImpl::LoadKids(CPDF_Dictionary* pDict)
-{
- CPDF_Object* pObj = pDict->GetElement(FX_BSTRC("Pg"));
- FX_DWORD PageObjNum = 0;
- if (pObj && pObj->GetType() == PDFOBJ_REFERENCE) {
- PageObjNum = ((CPDF_Reference*)pObj)->GetRefObjNum();
- }
- CPDF_Object* pKids = pDict->GetElementValue(FX_BSTRC("K"));
- if (pKids == NULL) {
- return;
- }
- if (pKids->GetType() == PDFOBJ_ARRAY) {
- CPDF_Array* pArray = (CPDF_Array*)pKids;
- m_Kids.SetSize(pArray->GetCount());
- for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) {
- CPDF_Object* pKid = pArray->GetElementValue(i);
- LoadKid(PageObjNum, pKid, &m_Kids[i]);
- }
- } else {
- m_Kids.SetSize(1);
- LoadKid(PageObjNum, pKids, &m_Kids[0]);
- }
-}
-void CPDF_StructElementImpl::LoadKid(FX_DWORD PageObjNum, CPDF_Object* pKidObj, CPDF_StructKid* pKid)
-{
- pKid->m_Type = CPDF_StructKid::Invalid;
- if (pKidObj == NULL) {
- return;
- }
- if (pKidObj->GetType() == PDFOBJ_NUMBER) {
- 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;
- }
- if (pKidObj->GetType() != PDFOBJ_DICTIONARY) {
- return;
- }
- CPDF_Dictionary* pKidDict = (CPDF_Dictionary*)pKidObj;
- CPDF_Object* pPageObj = pKidDict->GetElement(FX_BSTRC("Pg"));
- if (pPageObj && pPageObj->GetType() == PDFOBJ_REFERENCE) {
- PageObjNum = ((CPDF_Reference*)pPageObj)->GetRefObjNum();
- }
- CFX_ByteString type = pKidDict->GetString(FX_BSTRC("Type"));
- if (type == FX_BSTRC("MCR")) {
- if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
- return;
- }
- pKid->m_Type = CPDF_StructKid::StreamContent;
- CPDF_Object* pStreamObj = pKidDict->GetElement(FX_BSTRC("Stm"));
- if (pStreamObj && pStreamObj->GetType() == PDFOBJ_REFERENCE) {
- pKid->m_StreamContent.m_RefObjNum = ((CPDF_Reference*)pStreamObj)->GetRefObjNum();
- } else {
- pKid->m_StreamContent.m_RefObjNum = 0;
- }
- pKid->m_StreamContent.m_PageObjNum = PageObjNum;
- pKid->m_StreamContent.m_ContentId = pKidDict->GetInteger(FX_BSTRC("MCID"));
- } else if (type == FX_BSTRC("OBJR")) {
- if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) {
- return;
- }
- pKid->m_Type = CPDF_StructKid::Object;
- CPDF_Object* pObj = pKidDict->GetElement(FX_BSTRC("Obj"));
- if (pObj && pObj->GetType() == PDFOBJ_REFERENCE) {
- pKid->m_Object.m_RefObjNum = ((CPDF_Reference*)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 == NULL) {
- pKid->m_Element.m_pElement = FX_NEW CPDF_StructElementImpl(m_pTree, this, pKidDict);
- } else {
- pKid->m_Element.m_pElement = NULL;
- }
- }
-}
-static CPDF_Dictionary* FindAttrDict(CPDF_Object* pAttrs, FX_BSTR owner, FX_FLOAT nLevel = 0.0F)
-{
- if (nLevel > nMaxRecursion) {
- return NULL;
- }
- if (pAttrs == NULL) {
- return NULL;
- }
- CPDF_Dictionary* pDict = NULL;
- if (pAttrs->GetType() == PDFOBJ_DICTIONARY) {
- pDict = (CPDF_Dictionary*)pAttrs;
- } else if (pAttrs->GetType() == PDFOBJ_STREAM) {
- pDict = ((CPDF_Stream*)pAttrs)->GetDict();
- } else if (pAttrs->GetType() == PDFOBJ_ARRAY) {
- CPDF_Array* pArray = (CPDF_Array*)pAttrs;
- for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) {
- CPDF_Object* pElement = pArray->GetElementValue(i);
- pDict = FindAttrDict(pElement, owner, nLevel + 1);
- if (pDict) {
- return pDict;
- }
- }
- }
- if (pDict && pDict->GetString(FX_BSTRC("O")) == owner) {
- return pDict;
- }
- return NULL;
-}
-CPDF_Object* CPDF_StructElementImpl::GetAttr(FX_BSTR owner, FX_BSTR name, FX_BOOL bInheritable, FX_FLOAT fLevel)
-{
- if (fLevel > nMaxRecursion) {
- return NULL;
- }
- if (bInheritable) {
- CPDF_Object* pAttr = GetAttr(owner, name, FALSE);
- if (pAttr) {
- return pAttr;
- }
- if (m_pParent == NULL) {
- return NULL;
- }
- return m_pParent->GetAttr(owner, name, TRUE, fLevel + 1);
- }
- CPDF_Object* pA = m_pDict->GetElementValue(FX_BSTRC("A"));
- if (pA) {
- CPDF_Dictionary* pAttrDict = FindAttrDict(pA, owner);
- if (pAttrDict) {
- CPDF_Object* pAttr = pAttrDict->GetElementValue(name);
- if (pAttr) {
- return pAttr;
- }
- }
- }
- CPDF_Object* pC = m_pDict->GetElementValue(FX_BSTRC("C"));
- if (pC == NULL) {
- return NULL;
- }
- CPDF_Dictionary* pClassMap = m_pTree->m_pTreeRoot->GetDict(FX_BSTRC("ClassMap"));
- if (pClassMap == NULL) {
- return NULL;
- }
- if (pC->GetType() == PDFOBJ_ARRAY) {
- CPDF_Array* pArray = (CPDF_Array*)pC;
- for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) {
- CFX_ByteString class_name = pArray->GetString(i);
- CPDF_Dictionary* pClassDict = pClassMap->GetDict(class_name);
- if (pClassDict && pClassDict->GetString(FX_BSTRC("O")) == owner) {
- return pClassDict->GetElementValue(name);
- }
- }
- return NULL;
- }
- CFX_ByteString class_name = pC->GetString();
- CPDF_Dictionary* pClassDict = pClassMap->GetDict(class_name);
- if (pClassDict && pClassDict->GetString(FX_BSTRC("O")) == owner) {
- return pClassDict->GetElementValue(name);
- }
- return NULL;
-}
-CPDF_Object* CPDF_StructElementImpl::GetAttr(FX_BSTR owner, FX_BSTR name, FX_BOOL bInheritable, int subindex)
-{
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable);
- if (pAttr == NULL || subindex == -1 || pAttr->GetType() != PDFOBJ_ARRAY) {
- return pAttr;
- }
- CPDF_Array* pArray = (CPDF_Array*)pAttr;
- if (subindex >= (int)pArray->GetCount()) {
- return pAttr;
- }
- return pArray->GetElementValue(subindex);
-}
-CFX_ByteString CPDF_StructElementImpl::GetName(FX_BSTR owner, FX_BSTR name, FX_BSTR default_value, FX_BOOL bInheritable, int subindex)
-{
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex);
- if (pAttr == NULL || pAttr->GetType() != PDFOBJ_NAME) {
- return default_value;
- }
- return pAttr->GetString();
-}
-FX_ARGB CPDF_StructElementImpl::GetColor(FX_BSTR owner, FX_BSTR name, FX_ARGB default_value, FX_BOOL bInheritable, int subindex)
-{
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex);
- if (pAttr == NULL || pAttr->GetType() != PDFOBJ_ARRAY) {
- return default_value;
- }
- CPDF_Array* pArray = (CPDF_Array*)pAttr;
- return 0xff000000 | ((int)(pArray->GetNumber(0) * 255) << 16) | ((int)(pArray->GetNumber(1) * 255) << 8) | (int)(pArray->GetNumber(2) * 255);
-}
-FX_FLOAT CPDF_StructElementImpl::GetNumber(FX_BSTR owner, FX_BSTR name, FX_FLOAT default_value, FX_BOOL bInheritable, int subindex)
-{
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex);
- if (pAttr == NULL || pAttr->GetType() != PDFOBJ_NUMBER) {
- return default_value;
- }
- return pAttr->GetNumber();
-}
-int CPDF_StructElementImpl::GetInteger(FX_BSTR owner, FX_BSTR name, int default_value, FX_BOOL bInheritable, int subindex)
-{
- CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex);
- if (pAttr == NULL || pAttr->GetType() != PDFOBJ_NUMBER) {
- return default_value;
- }
- return pAttr->GetInteger();
-}
+// 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/fpdfapi/fpdf_parser.h" +#include "../../include/fpdfapi/fpdf_page.h" +#include "../../include/fpdfdoc/fpdf_tagged.h" +#include "tagged_int.h" +const int nMaxRecursion = 32; +static FX_BOOL IsTagged(const CPDF_Document* pDoc) +{ + CPDF_Dictionary* pCatalog = pDoc->GetRoot(); + CPDF_Dictionary* pMarkInfo = pCatalog->GetDict(FX_BSTRC("MarkInfo")); + return pMarkInfo != NULL && pMarkInfo->GetInteger(FX_BSTRC("Marked")); +} +CPDF_StructTree* CPDF_StructTree::LoadPage(const CPDF_Document* pDoc, const CPDF_Dictionary* pPageDict) +{ + if (!IsTagged(pDoc)) { + return NULL; + } + CPDF_StructTreeImpl* pTree = FX_NEW CPDF_StructTreeImpl(pDoc); + if (pTree == NULL) { + return NULL; + } + pTree->LoadPageTree(pPageDict); + return pTree; +} +CPDF_StructTree* CPDF_StructTree::LoadDoc(const CPDF_Document* pDoc) +{ + if (!IsTagged(pDoc)) { + return NULL; + } + CPDF_StructTreeImpl* pTree = FX_NEW CPDF_StructTreeImpl(pDoc); + if (pTree == NULL) { + return NULL; + } + pTree->LoadDocTree(); + return pTree; +} +CPDF_StructTreeImpl::CPDF_StructTreeImpl(const CPDF_Document* pDoc) +{ + CPDF_Dictionary* pCatalog = pDoc->GetRoot(); + m_pTreeRoot = pCatalog->GetDict(FX_BSTRC("StructTreeRoot")); + if (m_pTreeRoot == NULL) { + return; + } + m_pRoleMap = m_pTreeRoot->GetDict(FX_BSTRC("RoleMap")); +} +CPDF_StructTreeImpl::~CPDF_StructTreeImpl() +{ + for (int i = 0; i < m_Kids.GetSize(); i ++) + if (m_Kids[i]) { + m_Kids[i]->Release(); + } +} +void CPDF_StructTreeImpl::LoadDocTree() +{ + m_pPage = NULL; + if (m_pTreeRoot == NULL) { + return; + } + CPDF_Object* pKids = m_pTreeRoot->GetElementValue(FX_BSTRC("K")); + if (pKids == NULL) { + return; + } + if (pKids->GetType() == PDFOBJ_DICTIONARY) { + CPDF_StructElementImpl* pStructElementImpl = FX_NEW CPDF_StructElementImpl(this, NULL, (CPDF_Dictionary*)pKids); + if (pStructElementImpl == NULL) { + return; + } + m_Kids.Add(pStructElementImpl); + return; + } + if (pKids->GetType() != PDFOBJ_ARRAY) { + return; + } + CPDF_Array* pArray = (CPDF_Array*)pKids; + for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { + CPDF_Dictionary* pKid = pArray->GetDict(i); + CPDF_StructElementImpl* pStructElementImpl = FX_NEW CPDF_StructElementImpl(this, NULL, pKid); + if (pStructElementImpl == NULL) { + return; + } + m_Kids.Add(pStructElementImpl); + } +} +void CPDF_StructTreeImpl::LoadPageTree(const CPDF_Dictionary* pPageDict) +{ + m_pPage = pPageDict; + if (m_pTreeRoot == NULL) { + return; + } + CPDF_Object* pKids = m_pTreeRoot->GetElementValue(FX_BSTRC("K")); + if (pKids == NULL) { + return; + } + FX_DWORD dwKids = 0; + if (pKids->GetType() == PDFOBJ_DICTIONARY) { + dwKids = 1; + } else if (pKids->GetType() == PDFOBJ_ARRAY) { + dwKids = ((CPDF_Array*)pKids)->GetCount(); + } else { + return; + } + FX_DWORD i; + m_Kids.SetSize(dwKids); + for (i = 0; i < dwKids; i ++) { + m_Kids[i] = NULL; + } + CFX_MapPtrToPtr element_map; + CPDF_Dictionary* pParentTree = m_pTreeRoot->GetDict(FX_BSTRC("ParentTree")); + if (pParentTree == NULL) { + return; + } + CPDF_NumberTree parent_tree(pParentTree); + int parents_id = pPageDict->GetInteger(FX_BSTRC("StructParents"), -1); + if (parents_id >= 0) { + CPDF_Object* pParents = parent_tree.LookupValue(parents_id); + if (pParents == NULL || pParents->GetType() != PDFOBJ_ARRAY) { + return; + } + CPDF_Array* pParentArray = (CPDF_Array*)pParents; + for (i = 0; i < pParentArray->GetCount(); i ++) { + CPDF_Dictionary* pParent = pParentArray->GetDict(i); + if (pParent == NULL) { + continue; + } + AddPageNode(pParent, element_map); + } + } +} +CPDF_StructElementImpl* CPDF_StructTreeImpl::AddPageNode(CPDF_Dictionary* pDict, CFX_MapPtrToPtr& map, int nLevel) +{ + if (nLevel > nMaxRecursion) { + return NULL; + } + CPDF_StructElementImpl* pElement = NULL; + if (map.Lookup(pDict, (FX_LPVOID&)pElement)) { + return pElement; + } + pElement = FX_NEW CPDF_StructElementImpl(this, NULL, pDict); + if (pElement == NULL) { + return NULL; + } + map.SetAt(pDict, pElement); + CPDF_Dictionary* pParent = pDict->GetDict(FX_BSTRC("P")); + if (pParent == NULL || pParent->GetString(FX_BSTRC("Type")) == FX_BSTRC("StructTreeRoot")) { + if (!AddTopLevelNode(pDict, pElement)) { + pElement->Release(); + map.RemoveKey(pDict); + } + } else { + CPDF_StructElementImpl* pParentElement = AddPageNode(pParent, map, nLevel + 1); + FX_BOOL bSave = FALSE; + for (int i = 0; i < pParentElement->m_Kids.GetSize(); i ++) { + if (pParentElement->m_Kids[i].m_Type != CPDF_StructKid::Element) { + continue; + } + if (pParentElement->m_Kids[i].m_Element.m_pDict != pDict) { + continue; + } + pParentElement->m_Kids[i].m_Element.m_pElement = pElement->Retain(); + bSave = TRUE; + } + if (!bSave) { + pElement->Release(); + map.RemoveKey(pDict); + } + } + return pElement; +} +FX_BOOL CPDF_StructTreeImpl::AddTopLevelNode(CPDF_Dictionary* pDict, CPDF_StructElementImpl* pElement) +{ + CPDF_Object *pObj = m_pTreeRoot->GetElementValue(FX_BSTRC("K")); + if (!pObj) { + return FALSE; + } + if (pObj->GetType() == PDFOBJ_DICTIONARY) { + if (pObj->GetObjNum() == pDict->GetObjNum()) { + if (m_Kids[0]) { + m_Kids[0]->Release(); + } + m_Kids[0] = pElement->Retain(); + } else { + return FALSE; + } + } + if (pObj->GetType() == PDFOBJ_ARRAY) { + CPDF_Array* pTopKids = (CPDF_Array*)pObj; + FX_DWORD i; + FX_BOOL bSave = FALSE; + for (i = 0; i < pTopKids->GetCount(); i ++) { + CPDF_Reference* pKidRef = (CPDF_Reference*)pTopKids->GetElement(i); + if (pKidRef->GetType() != PDFOBJ_REFERENCE || pKidRef->GetRefObjNum() != pDict->GetObjNum()) { + continue; + } + if (m_Kids[i]) { + m_Kids[i]->Release(); + } + m_Kids[i] = pElement->Retain(); + bSave = TRUE; + } + if (!bSave) { + return FALSE; + } + } + return TRUE; +} +CPDF_StructElementImpl::CPDF_StructElementImpl(CPDF_StructTreeImpl* pTree, CPDF_StructElementImpl* pParent, CPDF_Dictionary* pDict) + : m_RefCount(0) +{ + m_pTree = pTree; + m_pDict = pDict; + m_Type = pDict->GetString(FX_BSTRC("S")); + CFX_ByteString mapped = pTree->m_pRoleMap->GetString(m_Type); + if (!mapped.IsEmpty()) { + m_Type = mapped; + } + m_pParent = pParent; + LoadKids(pDict); +} +CPDF_StructElementImpl::~CPDF_StructElementImpl() +{ + for (int i = 0; i < m_Kids.GetSize(); i ++) { + if (m_Kids[i].m_Type == CPDF_StructKid::Element && m_Kids[i].m_Element.m_pElement) { + ((CPDF_StructElementImpl*)m_Kids[i].m_Element.m_pElement)->Release(); + } + } +} +CPDF_StructElementImpl* CPDF_StructElementImpl::Retain() +{ + m_RefCount++; + return this; +} +void CPDF_StructElementImpl::Release() +{ + if(--m_RefCount < 1) { + delete this; + } +} +void CPDF_StructElementImpl::LoadKids(CPDF_Dictionary* pDict) +{ + CPDF_Object* pObj = pDict->GetElement(FX_BSTRC("Pg")); + FX_DWORD PageObjNum = 0; + if (pObj && pObj->GetType() == PDFOBJ_REFERENCE) { + PageObjNum = ((CPDF_Reference*)pObj)->GetRefObjNum(); + } + CPDF_Object* pKids = pDict->GetElementValue(FX_BSTRC("K")); + if (pKids == NULL) { + return; + } + if (pKids->GetType() == PDFOBJ_ARRAY) { + CPDF_Array* pArray = (CPDF_Array*)pKids; + m_Kids.SetSize(pArray->GetCount()); + for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { + CPDF_Object* pKid = pArray->GetElementValue(i); + LoadKid(PageObjNum, pKid, &m_Kids[i]); + } + } else { + m_Kids.SetSize(1); + LoadKid(PageObjNum, pKids, &m_Kids[0]); + } +} +void CPDF_StructElementImpl::LoadKid(FX_DWORD PageObjNum, CPDF_Object* pKidObj, CPDF_StructKid* pKid) +{ + pKid->m_Type = CPDF_StructKid::Invalid; + if (pKidObj == NULL) { + return; + } + if (pKidObj->GetType() == PDFOBJ_NUMBER) { + 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; + } + if (pKidObj->GetType() != PDFOBJ_DICTIONARY) { + return; + } + CPDF_Dictionary* pKidDict = (CPDF_Dictionary*)pKidObj; + CPDF_Object* pPageObj = pKidDict->GetElement(FX_BSTRC("Pg")); + if (pPageObj && pPageObj->GetType() == PDFOBJ_REFERENCE) { + PageObjNum = ((CPDF_Reference*)pPageObj)->GetRefObjNum(); + } + CFX_ByteString type = pKidDict->GetString(FX_BSTRC("Type")); + if (type == FX_BSTRC("MCR")) { + if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) { + return; + } + pKid->m_Type = CPDF_StructKid::StreamContent; + CPDF_Object* pStreamObj = pKidDict->GetElement(FX_BSTRC("Stm")); + if (pStreamObj && pStreamObj->GetType() == PDFOBJ_REFERENCE) { + pKid->m_StreamContent.m_RefObjNum = ((CPDF_Reference*)pStreamObj)->GetRefObjNum(); + } else { + pKid->m_StreamContent.m_RefObjNum = 0; + } + pKid->m_StreamContent.m_PageObjNum = PageObjNum; + pKid->m_StreamContent.m_ContentId = pKidDict->GetInteger(FX_BSTRC("MCID")); + } else if (type == FX_BSTRC("OBJR")) { + if (m_pTree->m_pPage && m_pTree->m_pPage->GetObjNum() != PageObjNum) { + return; + } + pKid->m_Type = CPDF_StructKid::Object; + CPDF_Object* pObj = pKidDict->GetElement(FX_BSTRC("Obj")); + if (pObj && pObj->GetType() == PDFOBJ_REFERENCE) { + pKid->m_Object.m_RefObjNum = ((CPDF_Reference*)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 == NULL) { + pKid->m_Element.m_pElement = FX_NEW CPDF_StructElementImpl(m_pTree, this, pKidDict); + } else { + pKid->m_Element.m_pElement = NULL; + } + } +} +static CPDF_Dictionary* FindAttrDict(CPDF_Object* pAttrs, FX_BSTR owner, FX_FLOAT nLevel = 0.0F) +{ + if (nLevel > nMaxRecursion) { + return NULL; + } + if (pAttrs == NULL) { + return NULL; + } + CPDF_Dictionary* pDict = NULL; + if (pAttrs->GetType() == PDFOBJ_DICTIONARY) { + pDict = (CPDF_Dictionary*)pAttrs; + } else if (pAttrs->GetType() == PDFOBJ_STREAM) { + pDict = ((CPDF_Stream*)pAttrs)->GetDict(); + } else if (pAttrs->GetType() == PDFOBJ_ARRAY) { + CPDF_Array* pArray = (CPDF_Array*)pAttrs; + for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { + CPDF_Object* pElement = pArray->GetElementValue(i); + pDict = FindAttrDict(pElement, owner, nLevel + 1); + if (pDict) { + return pDict; + } + } + } + if (pDict && pDict->GetString(FX_BSTRC("O")) == owner) { + return pDict; + } + return NULL; +} +CPDF_Object* CPDF_StructElementImpl::GetAttr(FX_BSTR owner, FX_BSTR name, FX_BOOL bInheritable, FX_FLOAT fLevel) +{ + if (fLevel > nMaxRecursion) { + return NULL; + } + if (bInheritable) { + CPDF_Object* pAttr = GetAttr(owner, name, FALSE); + if (pAttr) { + return pAttr; + } + if (m_pParent == NULL) { + return NULL; + } + return m_pParent->GetAttr(owner, name, TRUE, fLevel + 1); + } + CPDF_Object* pA = m_pDict->GetElementValue(FX_BSTRC("A")); + if (pA) { + CPDF_Dictionary* pAttrDict = FindAttrDict(pA, owner); + if (pAttrDict) { + CPDF_Object* pAttr = pAttrDict->GetElementValue(name); + if (pAttr) { + return pAttr; + } + } + } + CPDF_Object* pC = m_pDict->GetElementValue(FX_BSTRC("C")); + if (pC == NULL) { + return NULL; + } + CPDF_Dictionary* pClassMap = m_pTree->m_pTreeRoot->GetDict(FX_BSTRC("ClassMap")); + if (pClassMap == NULL) { + return NULL; + } + if (pC->GetType() == PDFOBJ_ARRAY) { + CPDF_Array* pArray = (CPDF_Array*)pC; + for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { + CFX_ByteString class_name = pArray->GetString(i); + CPDF_Dictionary* pClassDict = pClassMap->GetDict(class_name); + if (pClassDict && pClassDict->GetString(FX_BSTRC("O")) == owner) { + return pClassDict->GetElementValue(name); + } + } + return NULL; + } + CFX_ByteString class_name = pC->GetString(); + CPDF_Dictionary* pClassDict = pClassMap->GetDict(class_name); + if (pClassDict && pClassDict->GetString(FX_BSTRC("O")) == owner) { + return pClassDict->GetElementValue(name); + } + return NULL; +} +CPDF_Object* CPDF_StructElementImpl::GetAttr(FX_BSTR owner, FX_BSTR name, FX_BOOL bInheritable, int subindex) +{ + CPDF_Object* pAttr = GetAttr(owner, name, bInheritable); + if (pAttr == NULL || subindex == -1 || pAttr->GetType() != PDFOBJ_ARRAY) { + return pAttr; + } + CPDF_Array* pArray = (CPDF_Array*)pAttr; + if (subindex >= (int)pArray->GetCount()) { + return pAttr; + } + return pArray->GetElementValue(subindex); +} +CFX_ByteString CPDF_StructElementImpl::GetName(FX_BSTR owner, FX_BSTR name, FX_BSTR default_value, FX_BOOL bInheritable, int subindex) +{ + CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex); + if (pAttr == NULL || pAttr->GetType() != PDFOBJ_NAME) { + return default_value; + } + return pAttr->GetString(); +} +FX_ARGB CPDF_StructElementImpl::GetColor(FX_BSTR owner, FX_BSTR name, FX_ARGB default_value, FX_BOOL bInheritable, int subindex) +{ + CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex); + if (pAttr == NULL || pAttr->GetType() != PDFOBJ_ARRAY) { + return default_value; + } + CPDF_Array* pArray = (CPDF_Array*)pAttr; + return 0xff000000 | ((int)(pArray->GetNumber(0) * 255) << 16) | ((int)(pArray->GetNumber(1) * 255) << 8) | (int)(pArray->GetNumber(2) * 255); +} +FX_FLOAT CPDF_StructElementImpl::GetNumber(FX_BSTR owner, FX_BSTR name, FX_FLOAT default_value, FX_BOOL bInheritable, int subindex) +{ + CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex); + if (pAttr == NULL || pAttr->GetType() != PDFOBJ_NUMBER) { + return default_value; + } + return pAttr->GetNumber(); +} +int CPDF_StructElementImpl::GetInteger(FX_BSTR owner, FX_BSTR name, int default_value, FX_BOOL bInheritable, int subindex) +{ + CPDF_Object* pAttr = GetAttr(owner, name, bInheritable, subindex); + if (pAttr == NULL || pAttr->GetType() != PDFOBJ_NUMBER) { + return default_value; + } + return pAttr->GetInteger(); +} |