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author | dsinclair <dsinclair@chromium.org> | 2016-08-02 11:25:48 -0700 |
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committer | Commit bot <commit-bot@chromium.org> | 2016-08-02 11:25:49 -0700 |
commit | 02e6f5957a56ea492961aef71b3c16cf42ea5998 (patch) | |
tree | 065375d976a97f6b127368f665f24fca1fe994fe /core/fpdfdoc/cpdf_linklist.cpp | |
parent | 0690c35fec9c320bdc69b4a8678677fe143cee54 (diff) | |
download | pdfium-02e6f5957a56ea492961aef71b3c16cf42ea5998.tar.xz |
Splitting fpdfdoc/doc_* part I
The first of several CLs to split the core/fpdfdoc/doc_* files up to individual
class files.
Review-Url: https://codereview.chromium.org/2192823002
Diffstat (limited to 'core/fpdfdoc/cpdf_linklist.cpp')
-rw-r--r-- | core/fpdfdoc/cpdf_linklist.cpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/core/fpdfdoc/cpdf_linklist.cpp b/core/fpdfdoc/cpdf_linklist.cpp new file mode 100644 index 0000000000..5ef8f39da6 --- /dev/null +++ b/core/fpdfdoc/cpdf_linklist.cpp @@ -0,0 +1,70 @@ +// 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/fpdfdoc/include/cpdf_linklist.h" + +#include "core/fpdfapi/fpdf_page/include/cpdf_page.h" +#include "core/fpdfapi/fpdf_parser/include/cpdf_array.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); + } +} |