Splitting fpdfdoc/doc_* part II.

core/fpdfdoc/doc_ocg.cpp

Index: core/fpdfdoc/doc_ocg.cpp
diff --git a/core/fpdfdoc/doc_ocg.cpp b/core/fpdfdoc/doc_ocg.cpp
deleted file mode 100644
index 50bae658003c49705a1ed00650ed188024fb2f95..0000000000000000000000000000000000000000
--- a/core/fpdfdoc/doc_ocg.cpp
+++ /dev/null
@@ -1,285 +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/fpdfdoc/include/cpdf_occontext.h"
-
-#include "core/fpdfapi/fpdf_page/cpdf_contentmarkdata.h"
-#include "core/fpdfapi/fpdf_page/include/cpdf_pageobject.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
-
-namespace {
-
-int32_t FPDFDOC_OCG_FindGroup(const CPDF_Array* pArray,
-                              const CPDF_Dictionary* pGroupDict) {
-  if (!pArray || !pGroupDict)
-    return -1;
-
-  for (size_t i = 0; i < pArray->GetCount(); i++) {
-    if (pArray->GetDictAt(i) == pGroupDict)
-      return i;
-  }
-  return -1;
-}
-
-bool FPDFDOC_OCG_HasIntent(const CPDF_Dictionary* pDict,
-                           const CFX_ByteStringC& csElement,
-                           const CFX_ByteStringC& csDef) {
-  CPDF_Object* pIntent = pDict->GetDirectObjectBy("Intent");
-  if (!pIntent)
-    return csElement == csDef;
-
-  CFX_ByteString bsIntent;
-  if (CPDF_Array* pArray = pIntent->AsArray()) {
-    for (size_t i = 0; i < pArray->GetCount(); i++) {
-      bsIntent = pArray->GetStringAt(i);
-      if (bsIntent == "All" || bsIntent == csElement)
-        return true;
-    }
-    return false;
-  }
-  bsIntent = pIntent->GetString();
-  return bsIntent == "All" || bsIntent == csElement;
-}
-
-CPDF_Dictionary* FPDFDOC_OCG_GetConfig(CPDF_Document* pDoc,
-                                       const CPDF_Dictionary* pOCGDict) {
-  ASSERT(pOCGDict);
-  CPDF_Dictionary* pOCProperties = pDoc->GetRoot()->GetDictBy("OCProperties");
-  if (!pOCProperties)
-    return nullptr;
-
-  CPDF_Array* pOCGs = pOCProperties->GetArrayBy("OCGs");
-  if (!pOCGs)
-    return nullptr;
-
-  if (FPDFDOC_OCG_FindGroup(pOCGs, pOCGDict) < 0)
-    return nullptr;
-
-  CPDF_Dictionary* pConfig = pOCProperties->GetDictBy("D");
-  CPDF_Array* pConfigs = pOCProperties->GetArrayBy("Configs");
-  if (!pConfigs)
-    return pConfig;
-
-  for (size_t i = 0; i < pConfigs->GetCount(); i++) {
-    CPDF_Dictionary* pFind = pConfigs->GetDictAt(i);
-    if (pFind && FPDFDOC_OCG_HasIntent(pFind, "View", "View"))
-      return pFind;
-  }
-  return pConfig;
-}
-
-CFX_ByteString FPDFDOC_OCG_GetUsageTypeString(CPDF_OCContext::UsageType eType) {
-  CFX_ByteString csState;
-  switch (eType) {
-    case CPDF_OCContext::Design:
-      csState = "Design";
-      break;
-    case CPDF_OCContext::Print:
-      csState = "Print";
-      break;
-    case CPDF_OCContext::Export:
-      csState = "Export";
-      break;
-    default:
-      csState = "View";
-      break;
-  }
-  return csState;
-}
-
-}  // namespace
-
-CPDF_OCContext::CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType)
-    : m_pDocument(pDoc), m_eUsageType(eUsageType) {
-  ASSERT(pDoc);
-}
-
-CPDF_OCContext::~CPDF_OCContext() {
-}
-
-bool CPDF_OCContext::LoadOCGStateFromConfig(
-    const CFX_ByteString& csConfig,
-    const CPDF_Dictionary* pOCGDict) const {
-  CPDF_Dictionary* pConfig = FPDFDOC_OCG_GetConfig(m_pDocument, pOCGDict);
-  if (!pConfig)
-    return true;
-
-  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)
-    return bState;
-
-  CFX_ByteString csFind = csConfig + "State";
-  for (size_t i = 0; i < pArray->GetCount(); 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;
-}
-
-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";
-      }
-    }
-  }
-  return LoadOCGStateFromConfig(csState, pOCGDict);
-}
-
-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;
-
-  bool bState = LoadOCGState(pOCGDict);
-  m_OCGStates[pOCGDict] = bState;
-  return bState;
-}
-
-bool CPDF_OCContext::CheckObjectVisible(const CPDF_PageObject* pObj) {
-  const CPDF_ContentMarkData* pData = pObj->m_ContentMark.GetObject();
-  for (int i = 0; i < pData->CountItems(); i++) {
-    const CPDF_ContentMarkItem& item = pData->GetItem(i);
-    if (item.GetName() == "OC" &&
-        item.GetParamType() == CPDF_ContentMarkItem::PropertiesDict &&
-        !CheckOCGVisible(item.GetParam())) {
-      return false;
-    }
-  }
-  return true;
-}
-
-bool CPDF_OCContext::GetOCGVE(CPDF_Array* pExpression, int nLevel) {
-  if (nLevel > 32 || !pExpression)
-    return false;
-
-  CFX_ByteString csOperator = pExpression->GetStringAt(0);
-  if (csOperator == "Not") {
-    CPDF_Object* pOCGObj = pExpression->GetDirectObjectAt(1);
-    if (!pOCGObj)
-      return false;
-    if (CPDF_Dictionary* pDict = pOCGObj->AsDictionary())
-      return !GetOCGVisible(pDict);
-    if (CPDF_Array* pArray = pOCGObj->AsArray())
-      return !GetOCGVE(pArray, nLevel + 1);
-    return false;
-  }
-
-  if (csOperator != "Or" && csOperator != "And")
-    return false;
-
-  bool bValue = false;
-  for (size_t i = 1; i < pExpression->GetCount(); i++) {
-    CPDF_Object* pOCGObj = pExpression->GetDirectObjectAt(1);
-    if (!pOCGObj)
-      continue;
-
-    bool bItem = false;
-    if (CPDF_Dictionary* pDict = pOCGObj->AsDictionary())
-      bItem = GetOCGVisible(pDict);
-    else if (CPDF_Array* pArray = pOCGObj->AsArray())
-      bItem = GetOCGVE(pArray, nLevel + 1);
-
-    if (i == 1) {
-      bValue = bItem;
-    } else {
-      if (csOperator == "Or") {
-        bValue = bValue || bItem;
-      } else {
-        bValue = bValue && bItem;
-      }
-    }
-  }
-  return bValue;
-}
-
-bool CPDF_OCContext::LoadOCMDState(const CPDF_Dictionary* pOCMDDict) {
-  CPDF_Array* pVE = pOCMDDict->GetArrayBy("VE");
-  if (pVE)
-    return GetOCGVE(pVE, 0);
-
-  CFX_ByteString csP = pOCMDDict->GetStringBy("P", "AnyOn");
-  CPDF_Object* pOCGObj = pOCMDDict->GetDirectObjectBy("OCGs");
-  if (!pOCGObj)
-    return true;
-
-  if (const CPDF_Dictionary* pDict = pOCGObj->AsDictionary())
-    return GetOCGVisible(pDict);
-
-  CPDF_Array* pArray = pOCGObj->AsArray();
-  if (!pArray)
-    return true;
-
-  bool bState = (csP == "AllOn" || csP == "AllOff");
-  for (size_t i = 0; i < pArray->GetCount(); i++) {
-    bool bItem = true;
-    CPDF_Dictionary* pItemDict = pArray->GetDictAt(i);
-    if (pItemDict)
-      bItem = GetOCGVisible(pItemDict);
-
-    if ((csP == "AnyOn" && bItem) || (csP == "AnyOff" && !bItem))
-      return true;
-    if ((csP == "AllOn" && !bItem) || (csP == "AllOff" && bItem))
-      return false;
-  }
-  return bState;
-}
-
-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);
-}