| // 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 "../../include/fpdfdoc/fpdf_doc.h" |
| #include "../../src/fxcrt/fx_safe_types.h" |
| |
| CPDF_LinkList::~CPDF_LinkList() |
| { |
| FX_POSITION pos = m_PageMap.GetStartPosition(); |
| while (pos) { |
| FX_LPVOID key, value; |
| m_PageMap.GetNextAssoc(pos, key, value); |
| delete (CFX_PtrArray*)value; |
| } |
| } |
| CFX_PtrArray* CPDF_LinkList::GetPageLinks(CPDF_Page* pPage) |
| { |
| FX_DWORD objnum = pPage->m_pFormDict->GetObjNum(); |
| if (objnum == 0) { |
| return NULL; |
| } |
| CFX_PtrArray* pPageLinkList = NULL; |
| if (!m_PageMap.Lookup((FX_LPVOID)(FX_UINTPTR)objnum, (FX_LPVOID&)pPageLinkList)) { |
| pPageLinkList = new CFX_PtrArray; |
| m_PageMap.SetAt((FX_LPVOID)(FX_UINTPTR)objnum, pPageLinkList); |
| LoadPageLinks(pPage, pPageLinkList); |
| } |
| return pPageLinkList; |
| } |
| int CPDF_LinkList::CountLinks(CPDF_Page* pPage) |
| { |
| CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); |
| if (pPageLinkList == NULL) { |
| return 0; |
| } |
| return pPageLinkList->GetSize(); |
| } |
| CPDF_Link CPDF_LinkList::GetLink(CPDF_Page* pPage, int index) |
| { |
| CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); |
| if (!pPageLinkList) { |
| return CPDF_Link(); |
| } |
| return CPDF_Link((CPDF_Dictionary*)pPageLinkList->GetAt(index)); |
| } |
| CPDF_Link CPDF_LinkList::GetLinkAtPoint(CPDF_Page* pPage, FX_FLOAT pdf_x, FX_FLOAT pdf_y) |
| { |
| CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); |
| if (!pPageLinkList) { |
| return CPDF_Link(); |
| } |
| int size = pPageLinkList->GetSize(); |
| for (int i = size - 1; i >= 0; --i) { |
| CPDF_Link link((CPDF_Dictionary*)pPageLinkList->GetAt(i)); |
| CPDF_Rect rect = link.GetRect(); |
| if (rect.Contains(pdf_x, pdf_y)) { |
| return link; |
| } |
| } |
| return CPDF_Link(); |
| } |
| void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage, CFX_PtrArray* pList) |
| { |
| CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArray("Annots"); |
| if (pAnnotList == NULL) { |
| return; |
| } |
| for (FX_DWORD i = 0; i < pAnnotList->GetCount(); i ++) { |
| CPDF_Dictionary* pAnnot = pAnnotList->GetDict(i); |
| if (pAnnot == NULL) { |
| continue; |
| } |
| if (pAnnot->GetString("Subtype") != "Link") { |
| continue; |
| } |
| pList->Add(pAnnot); |
| } |
| } |
| CPDF_Rect CPDF_Link::GetRect() |
| { |
| return m_pDict->GetRect("Rect"); |
| } |
| CPDF_Dest CPDF_Link::GetDest(CPDF_Document* pDoc) |
| { |
| CPDF_Object* pDest = m_pDict->GetElementValue("Dest"); |
| if (pDest == NULL) { |
| return CPDF_Dest(); |
| } |
| if (pDest->GetType() == PDFOBJ_STRING || pDest->GetType() == PDFOBJ_NAME) { |
| CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests")); |
| CFX_ByteStringC name = pDest->GetString(); |
| return CPDF_Dest(name_tree.LookupNamedDest(pDoc, name)); |
| } |
| if (pDest->GetType() == PDFOBJ_ARRAY) { |
| return CPDF_Dest((CPDF_Array*)pDest); |
| } |
| return CPDF_Dest(); |
| } |
| CPDF_Action CPDF_Link::GetAction() |
| { |
| return CPDF_Action(m_pDict->GetDict("A")); |
| } |