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Diffstat (limited to 'core/src/fpdfdoc/doc_ocg.cpp')
| -rw-r--r-- | core/src/fpdfdoc/doc_ocg.cpp | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/core/src/fpdfdoc/doc_ocg.cpp b/core/src/fpdfdoc/doc_ocg.cpp deleted file mode 100644 index 3af745580c..0000000000 --- a/core/src/fpdfdoc/doc_ocg.cpp +++ /dev/null @@ -1,284 +0,0 @@ -// 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 "core/include/fpdfapi/cpdf_array.h" -#include "core/include/fpdfapi/cpdf_document.h" -#include "core/include/fpdfdoc/fpdf_doc.h" - -static int32_t FPDFDOC_OCG_FindGroup(const CPDF_Object* pObject, - const CPDF_Dictionary* pGroupDict) { - if (!pObject || !pGroupDict) - return -1; - - if (const CPDF_Array* pArray = pObject->AsArray()) { - FX_DWORD dwCount = pArray->GetCount(); - for (FX_DWORD i = 0; i < dwCount; i++) { - if (pArray->GetDictAt(i) == pGroupDict) - return i; - } - return -1; - } - return pObject->GetDict() == pGroupDict ? 0 : -1; -} -static FX_BOOL FPDFDOC_OCG_HasIntent(const CPDF_Dictionary* pDict, - const CFX_ByteStringC& csElement, - const CFX_ByteStringC& csDef = "") { - CPDF_Object* pIntent = pDict->GetElementValue("Intent"); - if (!pIntent) { - return csElement == csDef; - } - CFX_ByteString bsIntent; - if (CPDF_Array* pArray = pIntent->AsArray()) { - FX_DWORD dwCount = pArray->GetCount(); - for (FX_DWORD i = 0; i < dwCount; i++) { - bsIntent = pArray->GetStringAt(i); - if (bsIntent == "All" || bsIntent == csElement) - return TRUE; - } - return FALSE; - } - bsIntent = pIntent->GetString(); - return bsIntent == "All" || bsIntent == csElement; -} -static CPDF_Dictionary* FPDFDOC_OCG_GetConfig(CPDF_Document* pDoc, - const CPDF_Dictionary* pOCGDict, - const CFX_ByteStringC& bsState) { - FXSYS_assert(pDoc && pOCGDict); - CPDF_Dictionary* pOCProperties = pDoc->GetRoot()->GetDictBy("OCProperties"); - if (!pOCProperties) { - return NULL; - } - CPDF_Array* pOCGs = pOCProperties->GetArrayBy("OCGs"); - if (!pOCGs) { - return NULL; - } - if (FPDFDOC_OCG_FindGroup(pOCGs, pOCGDict) < 0) { - return NULL; - } - CPDF_Dictionary* pConfig = pOCProperties->GetDictBy("D"); - CPDF_Array* pConfigs = pOCProperties->GetArrayBy("Configs"); - if (pConfigs) { - CPDF_Dictionary* pFind; - int32_t iCount = pConfigs->GetCount(); - for (int32_t i = 0; i < iCount; i++) { - pFind = pConfigs->GetDictAt(i); - if (!pFind) { - continue; - } - if (!FPDFDOC_OCG_HasIntent(pFind, "View", "View")) { - continue; - } - pConfig = pFind; - break; - } - } - return pConfig; -} -static CFX_ByteString FPDFDOC_OCG_GetUsageTypeString( - CPDF_OCContext::UsageType eType) { - CFX_ByteString csState = "View"; - if (eType == CPDF_OCContext::Design) { - csState = "Design"; - } else if (eType == CPDF_OCContext::Print) { - csState = "Print"; - } else if (eType == CPDF_OCContext::Export) { - csState = "Export"; - } - return csState; -} -CPDF_OCContext::CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType) { - FXSYS_assert(pDoc); - m_pDocument = pDoc; - m_eUsageType = eUsageType; -} -CPDF_OCContext::~CPDF_OCContext() { - m_OCGStates.clear(); -} -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; -} -FX_BOOL CPDF_OCContext::LoadOCGState(const CPDF_Dictionary* pOCGDict) const { - if (!FPDFDOC_OCG_HasIntent(pOCGDict, "View", "View")) { - return TRUE; - } - CFX_ByteString csState = FPDFDOC_OCG_GetUsageTypeString(m_eUsageType); - CPDF_Dictionary* pUsage = pOCGDict->GetDictBy("Usage"); - if (pUsage) { - CPDF_Dictionary* pState = pUsage->GetDictBy(csState); - if (pState) { - CFX_ByteString csFind = csState + "State"; - if (pState->KeyExist(csFind)) { - return pState->GetStringBy(csFind) != "OFF"; - } - } - if (csState != "View") { - pState = pUsage->GetDictBy("View"); - if (pState && pState->KeyExist("ViewState")) { - return pState->GetStringBy("ViewState") != "OFF"; - } - } - } - FX_BOOL bDefValid = FALSE; - return LoadOCGStateFromConfig(csState, pOCGDict, bDefValid); -} - -FX_BOOL CPDF_OCContext::GetOCGVisible(const CPDF_Dictionary* pOCGDict) { - if (!pOCGDict) - return FALSE; - - const auto it = m_OCGStates.find(pOCGDict); - if (it != m_OCGStates.end()) - return it->second; - - FX_BOOL bState = LoadOCGState(pOCGDict); - m_OCGStates[pOCGDict] = bState; - return bState; -} - -FX_BOOL CPDF_OCContext::GetOCGVE(CPDF_Array* pExpression, - FX_BOOL bFromConfig, - int nLevel) { - if (nLevel > 32) { - return FALSE; - } - if (!pExpression) { - return FALSE; - } - int32_t iCount = pExpression->GetCount(); - CPDF_Object* pOCGObj; - CFX_ByteString csOperator = pExpression->GetStringAt(0); - if (csOperator == "Not") { - pOCGObj = pExpression->GetElementValue(1); - if (!pOCGObj) - return FALSE; - if (CPDF_Dictionary* pDict = pOCGObj->AsDictionary()) - return !(bFromConfig ? LoadOCGState(pDict) : GetOCGVisible(pDict)); - if (CPDF_Array* pArray = pOCGObj->AsArray()) - return !GetOCGVE(pArray, bFromConfig, nLevel + 1); - return FALSE; - } - if (csOperator == "Or" || csOperator == "And") { - FX_BOOL bValue = FALSE; - for (int32_t i = 1; i < iCount; i++) { - pOCGObj = pExpression->GetElementValue(1); - if (!pOCGObj) { - continue; - } - FX_BOOL bItem = FALSE; - if (CPDF_Dictionary* pDict = pOCGObj->AsDictionary()) - bItem = bFromConfig ? LoadOCGState(pDict) : GetOCGVisible(pDict); - else if (CPDF_Array* pArray = pOCGObj->AsArray()) - bItem = GetOCGVE(pArray, bFromConfig, nLevel + 1); - - if (i == 1) { - bValue = bItem; - } else { - if (csOperator == "Or") { - bValue = bValue || bItem; - } else { - bValue = bValue && bItem; - } - } - } - return bValue; - } - return FALSE; -} -FX_BOOL CPDF_OCContext::LoadOCMDState(const CPDF_Dictionary* pOCMDDict, - FX_BOOL bFromConfig) { - CPDF_Array* pVE = pOCMDDict->GetArrayBy("VE"); - if (pVE) { - return GetOCGVE(pVE, bFromConfig); - } - CFX_ByteString csP = pOCMDDict->GetStringBy("P", "AnyOn"); - CPDF_Object* pOCGObj = pOCMDDict->GetElementValue("OCGs"); - if (!pOCGObj) - return TRUE; - if (const CPDF_Dictionary* pDict = pOCGObj->AsDictionary()) - return bFromConfig ? LoadOCGState(pDict) : GetOCGVisible(pDict); - - CPDF_Array* pArray = pOCGObj->AsArray(); - if (!pArray) - return TRUE; - - FX_BOOL bState = FALSE; - if (csP == "AllOn" || csP == "AllOff") { - bState = TRUE; - } - int32_t iCount = pArray->GetCount(); - for (int32_t i = 0; i < iCount; i++) { - FX_BOOL bItem = TRUE; - CPDF_Dictionary* pItemDict = pArray->GetDictAt(i); - if (pItemDict) - bItem = bFromConfig ? LoadOCGState(pItemDict) : GetOCGVisible(pItemDict); - - if ((csP == "AnyOn" && bItem) || (csP == "AnyOff" && !bItem)) - return TRUE; - if ((csP == "AllOn" && !bItem) || (csP == "AllOff" && bItem)) - return FALSE; - } - return bState; -} -FX_BOOL CPDF_OCContext::CheckOCGVisible(const CPDF_Dictionary* pOCGDict) { - if (!pOCGDict) { - return TRUE; - } - CFX_ByteString csType = pOCGDict->GetStringBy("Type", "OCG"); - if (csType == "OCG") { - return GetOCGVisible(pOCGDict); - } - return LoadOCMDState(pOCGDict, FALSE); -} -void CPDF_OCContext::ResetOCContext() { - m_OCGStates.clear(); -} |