Move core/include/fpdfapi/fpdf_page.h to correct locations.

This CL splits the fpdf_page.h header into the individual classes and moves
them to the correct core/fpdfapi locations.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1805663002 .

20 files changed, 386 insertions, 141 deletions

diff --git a/core/fpdfapi/fpdf_page/cpdf_form.cpp b/core/fpdfapi/fpdf_page/cpdf_form.cpp
new file mode 100644
index 0000000000..a1160397fc
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/cpdf_form.cpp
@@ -0,0 +1,65 @@
+// Copyright 2016 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/fpdfapi/fpdf_page/include/cpdf_form.h"
+
+#include "core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h"
+#include "core/fpdfapi/fpdf_page/pageint.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h"
+
+CPDF_Form::CPDF_Form(CPDF_Document* pDoc,
+                     CPDF_Dictionary* pPageResources,
+                     CPDF_Stream* pFormStream,
+                     CPDF_Dictionary* pParentResources) {
+  m_pDocument = pDoc;
+  m_pFormStream = pFormStream;
+  m_pFormDict = pFormStream ? pFormStream->GetDict() : NULL;
+  m_pResources = m_pFormDict->GetDictBy("Resources");
+  m_pPageResources = pPageResources;
+  if (!m_pResources) {
+    m_pResources = pParentResources;
+  }
+  if (!m_pResources) {
+    m_pResources = pPageResources;
+  }
+  m_Transparency = 0;
+  LoadTransInfo();
+}
+
+CPDF_Form::~CPDF_Form() {}
+
+void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates,
+                           CFX_Matrix* pParentMatrix,
+                           CPDF_Type3Char* pType3Char,
+                           CPDF_ParseOptions* pOptions,
+                           int level) {
+  if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) {
+    return;
+  }
+  m_pParser.reset(new CPDF_ContentParser);
+  m_pParser->Start(this, pGraphicStates, pParentMatrix, pType3Char, pOptions,
+                   level);
+  m_ParseState = CONTENT_PARSING;
+}
+
+void CPDF_Form::ParseContent(CPDF_AllStates* pGraphicStates,
+                             CFX_Matrix* pParentMatrix,
+                             CPDF_Type3Char* pType3Char,
+                             CPDF_ParseOptions* pOptions,
+                             int level) {
+  StartParse(pGraphicStates, pParentMatrix, pType3Char, pOptions, level);
+  ContinueParse(NULL);
+}
+
+CPDF_Form* CPDF_Form::Clone() const {
+  CPDF_Form* pCloneForm =
+      new CPDF_Form(m_pDocument, m_pPageResources, m_pFormStream, m_pResources);
+  for (const auto& pObj : m_PageObjectList)
+    pCloneForm->m_PageObjectList.emplace_back(pObj->Clone());
+
+  return pCloneForm;
+}
diff --git a/core/fpdfapi/fpdf_page/cpdf_pageobjectholder.cpp b/core/fpdfapi/fpdf_page/cpdf_pageobjectholder.cpp
new file mode 100644
index 0000000000..a1392f647e
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/cpdf_pageobjectholder.cpp
@@ -0,0 +1,73 @@
+// Copyright 2016 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/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h"
+
+#include "core/fpdfapi/fpdf_page/pageint.h"
+
+CPDF_PageObjectHolder::CPDF_PageObjectHolder()
+    : m_pFormDict(nullptr),
+      m_pFormStream(nullptr),
+      m_pDocument(nullptr),
+      m_pPageResources(nullptr),
+      m_pResources(nullptr),
+      m_Transparency(0),
+      m_bBackgroundAlphaNeeded(FALSE),
+      m_bHasImageMask(FALSE),
+      m_ParseState(CONTENT_NOT_PARSED) {}
+
+void CPDF_PageObjectHolder::ContinueParse(IFX_Pause* pPause) {
+  if (!m_pParser) {
+    return;
+  }
+  m_pParser->Continue(pPause);
+  if (m_pParser->GetStatus() == CPDF_ContentParser::Done) {
+    m_ParseState = CONTENT_PARSED;
+    m_pParser.reset();
+  }
+}
+
+void CPDF_PageObjectHolder::Transform(const CFX_Matrix& matrix) {
+  for (auto& pObj : m_PageObjectList)
+    pObj->Transform(matrix);
+}
+
+CFX_FloatRect CPDF_PageObjectHolder::CalcBoundingBox() const {
+  if (m_PageObjectList.empty())
+    return CFX_FloatRect(0, 0, 0, 0);
+
+  FX_FLOAT left = 1000000.0f;
+  FX_FLOAT right = -1000000.0f;
+  FX_FLOAT bottom = 1000000.0f;
+  FX_FLOAT top = -1000000.0f;
+  for (const auto& pObj : m_PageObjectList) {
+    left = std::min(left, pObj->m_Left);
+    right = std::max(right, pObj->m_Right);
+    bottom = std::min(bottom, pObj->m_Bottom);
+    top = std::max(top, pObj->m_Top);
+  }
+  return CFX_FloatRect(left, bottom, right, top);
+}
+
+void CPDF_PageObjectHolder::LoadTransInfo() {
+  if (!m_pFormDict) {
+    return;
+  }
+  CPDF_Dictionary* pGroup = m_pFormDict->GetDictBy("Group");
+  if (!pGroup) {
+    return;
+  }
+  if (pGroup->GetStringBy("S") != "Transparency") {
+    return;
+  }
+  m_Transparency |= PDFTRANS_GROUP;
+  if (pGroup->GetIntegerBy("I")) {
+    m_Transparency |= PDFTRANS_ISOLATED;
+  }
+  if (pGroup->GetIntegerBy("K")) {
+    m_Transparency |= PDFTRANS_KNOCKOUT;
+  }
+}
diff --git a/core/fpdfapi/fpdf_page/cpdf_pageobjectlist.cpp b/core/fpdfapi/fpdf_page/cpdf_pageobjectlist.cpp
new file mode 100644
index 0000000000..36fb672849
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/cpdf_pageobjectlist.cpp
@@ -0,0 +1,17 @@
+// Copyright 2016 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/fpdfapi/fpdf_page/cpdf_pageobjectlist.h"
+
+#include "core/fpdfapi/fpdf_page/pageint.h"
+#include "core/include/fpdfapi/fpdf_pageobj.h"
+#include "third_party/base/stl_util.h"
+
+CPDF_PageObject* CPDF_PageObjectList::GetPageObjectByIndex(int index) {
+  if (index < 0 || index >= pdfium::CollectionSize<int>(*this))
+    return nullptr;
+  return (*this)[index].get();
+}
diff --git a/core/fpdfapi/fpdf_page/cpdf_pageobjectlist.h b/core/fpdfapi/fpdf_page/cpdf_pageobjectlist.h
new file mode 100644
index 0000000000..360bb26e8b
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/cpdf_pageobjectlist.h
@@ -0,0 +1,21 @@
+// Copyright 2016 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
+
+#ifndef CORE_FPDFAPI_FPDF_PAGE_CPDF_PAGEOBJECTLIST_H_
+#define CORE_FPDFAPI_FPDF_PAGE_CPDF_PAGEOBJECTLIST_H_
+
+#include <deque>
+#include <memory>
+
+class CPDF_PageObject;
+
+class CPDF_PageObjectList
+    : public std::deque<std::unique_ptr<CPDF_PageObject>> {
+ public:
+  CPDF_PageObject* GetPageObjectByIndex(int index);
+};
+
+#endif  // CORE_FPDFAPI_FPDF_PAGE_CPDF_PAGEOBJECTLIST_H_
diff --git a/core/fpdfapi/fpdf_page/cpdf_parseoptions.cpp b/core/fpdfapi/fpdf_page/cpdf_parseoptions.cpp
new file mode 100644
index 0000000000..d22b6f13c9
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/cpdf_parseoptions.cpp
@@ -0,0 +1,12 @@
+// Copyright 2016 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/fpdfapi/fpdf_page/cpdf_parseoptions.h"
+
+CPDF_ParseOptions::CPDF_ParseOptions()
+    : m_bTextOnly(FALSE),
+      m_bMarkedContent(TRUE),
+      m_bSeparateForm(TRUE),
+      m_bDecodeInlineImage(FALSE) {}
diff --git a/core/fpdfapi/fpdf_page/cpdf_parseoptions.h b/core/fpdfapi/fpdf_page/cpdf_parseoptions.h
new file mode 100644
index 0000000000..cd1bb69948
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/cpdf_parseoptions.h
@@ -0,0 +1,22 @@
+// Copyright 2016 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
+
+#ifndef CORE_FPDFAPI_FPDF_PAGE_CPDF_PARSEOPTIONS_H_
+#define CORE_FPDFAPI_FPDF_PAGE_CPDF_PARSEOPTIONS_H_
+
+#include "core/include/fxcrt/fx_system.h"
+
+class CPDF_ParseOptions {
+ public:
+  CPDF_ParseOptions();
+
+  FX_BOOL m_bTextOnly;
+  FX_BOOL m_bMarkedContent;
+  FX_BOOL m_bSeparateForm;
+  FX_BOOL m_bDecodeInlineImage;
+};
+
+#endif  // CORE_FPDFAPI_FPDF_PAGE_CPDF_PARSEOPTIONS_H_
diff --git a/core/fpdfapi/fpdf_page/fpdf_page.cpp b/core/fpdfapi/fpdf_page/fpdf_page.cpp
index 2cec0928dd..ad54e320bc 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page.cpp
@@ -8,12 +8,13 @@
 
 #include <algorithm>
 
+#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
+#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
 #include "core/fpdfapi/include/cpdf_modulemgr.h"
 #include "core/fpdfapi/ipdf_rendermodule.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 #include "third_party/base/stl_util.h"
 
 CPDF_PageObject::CPDF_PageObject() {}
@@ -463,76 +464,6 @@ void CPDF_FormObject::CalcBoundingBox() {
   m_Top = form_rect.top;
 }
 
-CPDF_PageObject* CPDF_PageObjectList::GetPageObjectByIndex(int index) {
-  if (index < 0 || index >= pdfium::CollectionSize<int>(*this))
-    return nullptr;
-  return (*this)[index].get();
-}
-
-CPDF_PageObjectHolder::CPDF_PageObjectHolder()
-    : m_pFormDict(nullptr),
-      m_pFormStream(nullptr),
-      m_pDocument(nullptr),
-      m_pPageResources(nullptr),
-      m_pResources(nullptr),
-      m_Transparency(0),
-      m_bBackgroundAlphaNeeded(FALSE),
-      m_bHasImageMask(FALSE),
-      m_ParseState(CONTENT_NOT_PARSED) {}
-
-void CPDF_PageObjectHolder::ContinueParse(IFX_Pause* pPause) {
-  if (!m_pParser) {
-    return;
-  }
-  m_pParser->Continue(pPause);
-  if (m_pParser->GetStatus() == CPDF_ContentParser::Done) {
-    m_ParseState = CONTENT_PARSED;
-    m_pParser.reset();
-  }
-}
-
-void CPDF_PageObjectHolder::Transform(const CFX_Matrix& matrix) {
-  for (auto& pObj : m_PageObjectList)
-    pObj->Transform(matrix);
-}
-
-CFX_FloatRect CPDF_PageObjectHolder::CalcBoundingBox() const {
-  if (m_PageObjectList.empty())
-    return CFX_FloatRect(0, 0, 0, 0);
-
-  FX_FLOAT left = 1000000.0f;
-  FX_FLOAT right = -1000000.0f;
-  FX_FLOAT bottom = 1000000.0f;
-  FX_FLOAT top = -1000000.0f;
-  for (const auto& pObj : m_PageObjectList) {
-    left = std::min(left, pObj->m_Left);
-    right = std::max(right, pObj->m_Right);
-    bottom = std::min(bottom, pObj->m_Bottom);
-    top = std::max(top, pObj->m_Top);
-  }
-  return CFX_FloatRect(left, bottom, right, top);
-}
-
-void CPDF_PageObjectHolder::LoadTransInfo() {
-  if (!m_pFormDict) {
-    return;
-  }
-  CPDF_Dictionary* pGroup = m_pFormDict->GetDictBy("Group");
-  if (!pGroup) {
-    return;
-  }
-  if (pGroup->GetStringBy("S") != "Transparency") {
-    return;
-  }
-  m_Transparency |= PDFTRANS_GROUP;
-  if (pGroup->GetIntegerBy("I")) {
-    m_Transparency |= PDFTRANS_ISOLATED;
-  }
-  if (pGroup->GetIntegerBy("K")) {
-    m_Transparency |= PDFTRANS_KNOCKOUT;
-  }
-}
-
 CPDF_Page::CPDF_Page() : m_pPageRender(nullptr) {}
 
 void CPDF_Page::Load(CPDF_Document* pDocument,
@@ -650,59 +581,6 @@ CPDF_Object* CPDF_Page::GetPageAttr(const CFX_ByteStringC& name) const {
   return FPDFAPI_GetPageAttr(m_pFormDict, name);
 }
 
-CPDF_Form::CPDF_Form(CPDF_Document* pDoc,
-                     CPDF_Dictionary* pPageResources,
-                     CPDF_Stream* pFormStream,
-                     CPDF_Dictionary* pParentResources) {
-  m_pDocument = pDoc;
-  m_pFormStream = pFormStream;
-  m_pFormDict = pFormStream ? pFormStream->GetDict() : NULL;
-  m_pResources = m_pFormDict->GetDictBy("Resources");
-  m_pPageResources = pPageResources;
-  if (!m_pResources) {
-    m_pResources = pParentResources;
-  }
-  if (!m_pResources) {
-    m_pResources = pPageResources;
-  }
-  m_Transparency = 0;
-  LoadTransInfo();
-}
-
-CPDF_Form::~CPDF_Form() {}
-
-void CPDF_Form::StartParse(CPDF_AllStates* pGraphicStates,
-                           CFX_Matrix* pParentMatrix,
-                           CPDF_Type3Char* pType3Char,
-                           CPDF_ParseOptions* pOptions,
-                           int level) {
-  if (m_ParseState == CONTENT_PARSED || m_ParseState == CONTENT_PARSING) {
-    return;
-  }
-  m_pParser.reset(new CPDF_ContentParser);
-  m_pParser->Start(this, pGraphicStates, pParentMatrix, pType3Char, pOptions,
-                   level);
-  m_ParseState = CONTENT_PARSING;
-}
-
-void CPDF_Form::ParseContent(CPDF_AllStates* pGraphicStates,
-                             CFX_Matrix* pParentMatrix,
-                             CPDF_Type3Char* pType3Char,
-                             CPDF_ParseOptions* pOptions,
-                             int level) {
-  StartParse(pGraphicStates, pParentMatrix, pType3Char, pOptions, level);
-  ContinueParse(NULL);
-}
-
-CPDF_Form* CPDF_Form::Clone() const {
-  CPDF_Form* pCloneForm =
-      new CPDF_Form(m_pDocument, m_pPageResources, m_pFormStream, m_pResources);
-  for (const auto& pObj : m_PageObjectList)
-    pCloneForm->m_PageObjectList.emplace_back(pObj->Clone());
-
-  return pCloneForm;
-}
-
 void CPDF_Page::GetDisplayMatrix(CFX_Matrix& matrix,
                                  int xPos,
                                  int yPos,
@@ -756,10 +634,3 @@ void CPDF_Page::GetDisplayMatrix(CFX_Matrix& matrix,
   matrix = m_PageMatrix;
   matrix.Concat(display_matrix);
 }
-
-CPDF_ParseOptions::CPDF_ParseOptions() {
-  m_bTextOnly = FALSE;
-  m_bMarkedContent = TRUE;
-  m_bSeparateForm = TRUE;
-  m_bDecodeInlineImage = FALSE;
-}
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_colors.cpp b/core/fpdfapi/fpdf_page/fpdf_page_colors.cpp
index 040821bc06..d4b69f2d3f 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_colors.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_colors.cpp
@@ -15,7 +15,6 @@
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"
 #include "core/fpdfapi/include/cpdf_modulemgr.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fxcodec/fx_codec.h"
 
 namespace {
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp b/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp
index 9da5d1fe00..0d0c373c56 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_doc.cpp
@@ -13,7 +13,6 @@
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
 #include "core/fpdfapi/include/cpdf_modulemgr.h"
 #include "core/fpdfapi/ipdf_pagemodule.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 
 namespace {
 
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_func.cpp b/core/fpdfapi/fpdf_page/fpdf_page_func.cpp
index 00ca2d8d18..4bf7c06a7b 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_func.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_func.cpp
@@ -15,7 +15,6 @@
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_simple_parser.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fxcrt/fx_safe_types.h"
 #include "third_party/base/numerics/safe_conversions_impl.h"
 
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp b/core/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
index 99156411f6..cd81b97112 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_graph_state.cpp
@@ -12,7 +12,6 @@
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
 #include "core/fpdfapi/fpdf_render/render_int.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 #include "third_party/base/stl_util.h"
 
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_image.cpp b/core/fpdfapi/fpdf_page/fpdf_page_image.cpp
index cd89725de2..247b0b9703 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_image.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_image.cpp
@@ -8,7 +8,6 @@
 
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 
 CPDF_ImageObject::CPDF_ImageObject() : m_pImage(nullptr) {}
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
index 69ff8da21f..b62579813a 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_parser.cpp
@@ -9,6 +9,7 @@
 #include <vector>
 
 #include "core/fpdfapi/fpdf_edit/include/cpdf_creator.h"
+#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
@@ -16,7 +17,6 @@
 #include "core/fpdfapi/fpdf_parser/include/cpdf_number.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
 #include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 
 namespace {
 
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 36be007b68..c1bb70ff80 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -8,6 +8,8 @@
 
 #include <limits.h>
 
+#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
+#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_boolean.h"
 #include "core/fpdfapi/fpdf_parser/cpdf_null.h"
 #include "core/fpdfapi/fpdf_parser/fpdf_parser_utility.h"
@@ -19,7 +21,6 @@
 #include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"
 #include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
 #include "core/fpdfapi/include/cpdf_modulemgr.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fxcodec/fx_codec.h"
 #include "core/include/fxcrt/fx_ext.h"
 #include "core/include/fxcrt/fx_safe_types.h"
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_path.cpp b/core/fpdfapi/fpdf_page/fpdf_page_path.cpp
index 07c6ae1a80..286dfdfb1c 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_path.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_path.cpp
@@ -6,7 +6,6 @@
 
 #include "core/fpdfapi/fpdf_page/pageint.h"
 
-#include "core/include/fpdfapi/fpdf_page.h"
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 
 CPDF_PathObject::CPDF_PathObject() {}
diff --git a/core/fpdfapi/fpdf_page/fpdf_page_pattern.cpp b/core/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
index 7e22661624..fbb2c28373 100644
--- a/core/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
+++ b/core/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
@@ -8,10 +8,10 @@
 
 #include <algorithm>
 
+#include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
-#include "core/include/fpdfapi/fpdf_page.h"
 
 namespace {
 
diff --git a/core/fpdfapi/fpdf_page/include/cpdf_form.h b/core/fpdfapi/fpdf_page/include/cpdf_form.h
new file mode 100644
index 0000000000..3b9f1cc7fb
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/include/cpdf_form.h
@@ -0,0 +1,44 @@
+// Copyright 2016 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
+
+#ifndef CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_FORM_H_
+#define CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_FORM_H_
+
+#include "core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h"
+
+class CPDF_Document;
+class CPDF_Dictionary;
+class CPDF_Stream;
+class CPDF_AllStates;
+class CFX_Matrix;
+class CPDF_Type3Char;
+class CPDF_ParseOptions;
+
+class CPDF_Form : public CPDF_PageObjectHolder {
+ public:
+  CPDF_Form(CPDF_Document* pDocument,
+            CPDF_Dictionary* pPageResources,
+            CPDF_Stream* pFormStream,
+            CPDF_Dictionary* pParentResources = NULL);
+
+  ~CPDF_Form();
+
+  void StartParse(CPDF_AllStates* pGraphicStates,
+                  CFX_Matrix* pParentMatrix,
+                  CPDF_Type3Char* pType3Char,
+                  CPDF_ParseOptions* pOptions,
+                  int level = 0);
+
+  void ParseContent(CPDF_AllStates* pGraphicStates,
+                    CFX_Matrix* pParentMatrix,
+                    CPDF_Type3Char* pType3Char,
+                    CPDF_ParseOptions* pOptions,
+                    int level = 0);
+
+  CPDF_Form* Clone() const;
+};
+
+#endif  // CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_FORM_H_
diff --git a/core/fpdfapi/fpdf_page/include/cpdf_page.h b/core/fpdfapi/fpdf_page/include/cpdf_page.h
new file mode 100644
index 0000000000..82c88d1c37
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/include/cpdf_page.h
@@ -0,0 +1,57 @@
+// Copyright 2016 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
+
+#ifndef CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGE_H_
+#define CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGE_H_
+
+#include "core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h"
+#include "core/include/fxcrt/fx_basic.h"
+#include "core/include/fxcrt/fx_coordinates.h"
+#include "core/include/fxcrt/fx_system.h"
+
+class CPDF_Document;
+class CPDF_Dictionary;
+class CPDF_Object;
+class CPDF_PageRenderCache;
+class CPDF_ParseOptions;
+
+class CPDF_Page : public CPDF_PageObjectHolder, public CFX_PrivateData {
+ public:
+  CPDF_Page();
+  ~CPDF_Page();
+
+  void Load(CPDF_Document* pDocument,
+            CPDF_Dictionary* pPageDict,
+            FX_BOOL bPageCache = TRUE);
+
+  void ParseContent(CPDF_ParseOptions* pOptions);
+
+  void GetDisplayMatrix(CFX_Matrix& matrix,
+                        int xPos,
+                        int yPos,
+                        int xSize,
+                        int ySize,
+                        int iRotate) const;
+
+  FX_FLOAT GetPageWidth() const { return m_PageWidth; }
+  FX_FLOAT GetPageHeight() const { return m_PageHeight; }
+  CFX_FloatRect GetPageBBox() const { return m_BBox; }
+  const CFX_Matrix& GetPageMatrix() const { return m_PageMatrix; }
+  CPDF_Object* GetPageAttr(const CFX_ByteStringC& name) const;
+  CPDF_PageRenderCache* GetRenderCache() const { return m_pPageRender; }
+
+ protected:
+  friend class CPDF_ContentParser;
+
+  void StartParse(CPDF_ParseOptions* pOptions);
+
+  FX_FLOAT m_PageWidth;
+  FX_FLOAT m_PageHeight;
+  CFX_Matrix m_PageMatrix;
+  CPDF_PageRenderCache* m_pPageRender;
+};
+
+#endif  // CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGE_H_
diff --git a/core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h b/core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h
new file mode 100644
index 0000000000..b0ab376956
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h
@@ -0,0 +1,67 @@
+// Copyright 2016 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
+
+#ifndef CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGEOBJECTHOLDER_H_
+#define CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGEOBJECTHOLDER_H_
+
+#include "core/fpdfapi/fpdf_page/cpdf_pageobjectlist.h"
+#include "core/include/fxcrt/fx_coordinates.h"
+#include "core/include/fxcrt/fx_system.h"
+
+class IFX_Pause;
+class CPDF_Dictionary;
+class CPDF_Stream;
+class CPDF_Document;
+class CPDF_ContentParser;
+
+#define PDFTRANS_GROUP 0x0100
+#define PDFTRANS_ISOLATED 0x0200
+#define PDFTRANS_KNOCKOUT 0x0400
+
+class CPDF_PageObjectHolder {
+ public:
+  CPDF_PageObjectHolder();
+
+  void ContinueParse(IFX_Pause* pPause);
+  bool IsParsed() const { return m_ParseState == CONTENT_PARSED; }
+
+  CPDF_PageObjectList* GetPageObjectList() { return &m_PageObjectList; }
+  const CPDF_PageObjectList* GetPageObjectList() const {
+    return &m_PageObjectList;
+  }
+
+  FX_BOOL BackgroundAlphaNeeded() const { return m_bBackgroundAlphaNeeded; }
+  void SetBackgroundAlphaNeeded(FX_BOOL needed) {
+    m_bBackgroundAlphaNeeded = needed;
+  }
+
+  FX_BOOL HasImageMask() const { return m_bHasImageMask; }
+  void SetHasImageMask(FX_BOOL value) { m_bHasImageMask = value; }
+
+  void Transform(const CFX_Matrix& matrix);
+  CFX_FloatRect CalcBoundingBox() const;
+
+  CPDF_Dictionary* m_pFormDict;
+  CPDF_Stream* m_pFormStream;
+  CPDF_Document* m_pDocument;
+  CPDF_Dictionary* m_pPageResources;
+  CPDF_Dictionary* m_pResources;
+  CFX_FloatRect m_BBox;
+  int m_Transparency;
+
+ protected:
+  enum ParseState { CONTENT_NOT_PARSED, CONTENT_PARSING, CONTENT_PARSED };
+
+  void LoadTransInfo();
+
+  FX_BOOL m_bBackgroundAlphaNeeded;
+  FX_BOOL m_bHasImageMask;
+  ParseState m_ParseState;
+  std::unique_ptr<CPDF_ContentParser> m_pParser;
+  CPDF_PageObjectList m_PageObjectList;
+};
+
+#endif  // CORE_FPDFAPI_FPDF_PAGE_INCLUDE_CPDF_PAGEOBJECTHOLDER_H_
diff --git a/core/fpdfapi/fpdf_page/pageint.h b/core/fpdfapi/fpdf_page/pageint.h
index 8818bc9af0..eab3d42b2b 100644
--- a/core/fpdfapi/fpdf_page/pageint.h
+++ b/core/fpdfapi/fpdf_page/pageint.h
@@ -12,7 +12,8 @@
 #include <unordered_map>
 #include <vector>
 
-#include "core/include/fpdfapi/fpdf_page.h"
+#include "core/fpdfapi/fpdf_page/cpdf_parseoptions.h"
+#include "core/fpdfapi/fpdf_page/include/cpdf_pageobjectholder.h"
 #include "core/include/fpdfapi/fpdf_pageobj.h"
 
 class CPDF_AllStates;