Splitting fpdfdoc/doc_* part I

core/fpdfdoc/doc_link.cpp

-// 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_link.h"
-
-#include <vector>
-
-#include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
-#include "core/fpdfdoc/include/cpdf_linklist.h"
-#include "core/fpdfdoc/include/cpdf_nametree.h"
-
-CPDF_LinkList::CPDF_LinkList() {}
-
-CPDF_LinkList::~CPDF_LinkList() {}
-
-const std::vector<CPDF_Dictionary*>* CPDF_LinkList::GetPageLinks(
-    CPDF_Page* pPage) {
-  uint32_t objnum = pPage->m_pFormDict->GetObjNum();
-  if (objnum == 0)
-    return nullptr;
-
-  auto it = m_PageMap.find(objnum);
-  if (it != m_PageMap.end())
-    return &it->second;
-
-  // std::map::operator[] forces the creation of a map entry.
-  std::vector<CPDF_Dictionary*>& page_link_list = m_PageMap[objnum];
-  LoadPageLinks(pPage, &page_link_list);
-  return &page_link_list;
-}
-
-CPDF_Link CPDF_LinkList::GetLinkAtPoint(CPDF_Page* pPage,
-                                        FX_FLOAT pdf_x,
-                                        FX_FLOAT pdf_y,
-                                        int* z_order) {
-  const std::vector<CPDF_Dictionary*>* pPageLinkList = GetPageLinks(pPage);
-  if (!pPageLinkList)
-    return CPDF_Link();
-
-  for (size_t i = pPageLinkList->size(); i > 0; --i) {
-    size_t annot_index = i - 1;
-    CPDF_Dictionary* pAnnot = (*pPageLinkList)[annot_index];
-    if (!pAnnot)
-      continue;
-
-    CPDF_Link link(pAnnot);
-    CFX_FloatRect rect = link.GetRect();
-    if (!rect.Contains(pdf_x, pdf_y))
-      continue;
-
-    if (z_order)
-      *z_order = annot_index;
-    return link;
-  }
-  return CPDF_Link();
-}
-
-void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage,
-                                  std::vector<CPDF_Dictionary*>* pList) {
-  CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArrayBy("Annots");
-  if (!pAnnotList)
-    return;
-
-  for (size_t i = 0; i < pAnnotList->GetCount(); ++i) {
-    CPDF_Dictionary* pAnnot = pAnnotList->GetDictAt(i);
-    bool add_link = (pAnnot && pAnnot->GetStringBy("Subtype") == "Link");
-    // Add non-links as nullptrs to preserve z-order.
-    pList->push_back(add_link ? pAnnot : nullptr);
-  }
-}
-
-CFX_FloatRect CPDF_Link::GetRect() {
-  return m_pDict->GetRectBy("Rect");
-}
-CPDF_Dest CPDF_Link::GetDest(CPDF_Document* pDoc) {
-  CPDF_Object* pDest = m_pDict->GetDirectObjectBy("Dest");
-  if (!pDest)
-    return CPDF_Dest();
-
-  if (pDest->IsString() || pDest->IsName()) {
-    CPDF_NameTree name_tree(pDoc, "Dests");
-    return CPDF_Dest(name_tree.LookupNamedDest(pDoc, pDest->GetString()));
-  }
-  if (CPDF_Array* pArray = pDest->AsArray())
-    return CPDF_Dest(pArray);
-  return CPDF_Dest();
-}
-CPDF_Action CPDF_Link::GetAction() {
-  return CPDF_Action(m_pDict->GetDictBy("A"));
-}