doc_link.cpp revision ee451cb395940862dad63c85adfe8f2fd55e864c
1// Copyright 2014 PDFium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7#include "../../include/fpdfdoc/fpdf_doc.h" 8CPDF_LinkList::~CPDF_LinkList() 9{ 10 FX_POSITION pos = m_PageMap.GetStartPosition(); 11 while (pos) { 12 FX_LPVOID key, value; 13 m_PageMap.GetNextAssoc(pos, key, value); 14 delete (CFX_PtrArray*)value; 15 } 16} 17CFX_PtrArray* CPDF_LinkList::GetPageLinks(CPDF_Page* pPage) 18{ 19 FX_DWORD objnum = pPage->m_pFormDict->GetObjNum(); 20 if (objnum == 0) { 21 return NULL; 22 } 23 CFX_PtrArray* pPageLinkList = NULL; 24 if (!m_PageMap.Lookup((FX_LPVOID)(FX_UINTPTR)objnum, (FX_LPVOID&)pPageLinkList)) { 25 pPageLinkList = FX_NEW CFX_PtrArray; 26 if (pPageLinkList == NULL) { 27 return NULL; 28 } 29 m_PageMap.SetAt((FX_LPVOID)(FX_UINTPTR)objnum, pPageLinkList); 30 LoadPageLinks(pPage, pPageLinkList); 31 } 32 return pPageLinkList; 33} 34int CPDF_LinkList::CountLinks(CPDF_Page* pPage) 35{ 36 CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); 37 if (pPageLinkList == NULL) { 38 return 0; 39 } 40 return pPageLinkList->GetSize(); 41} 42CPDF_Link CPDF_LinkList::GetLink(CPDF_Page* pPage, int index) 43{ 44 CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); 45 if (pPageLinkList == NULL) { 46 return NULL; 47 } 48 return (CPDF_Dictionary*)pPageLinkList->GetAt(index); 49} 50CPDF_Link CPDF_LinkList::GetLinkAtPoint(CPDF_Page* pPage, FX_FLOAT pdf_x, FX_FLOAT pdf_y) 51{ 52 CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); 53 if (pPageLinkList == NULL) { 54 return NULL; 55 } 56 int size = pPageLinkList->GetSize(); 57 for (int i = 0; i < size; i ++) { 58 CPDF_Link Link = (CPDF_Dictionary*)pPageLinkList->GetAt(i); 59 CPDF_Rect rect = Link.GetRect(); 60 if (rect.Contains(pdf_x, pdf_y)) { 61 return Link; 62 } 63 } 64 return NULL; 65} 66void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage, CFX_PtrArray* pList) 67{ 68 CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArray("Annots"); 69 if (pAnnotList == NULL) { 70 return; 71 } 72 for (FX_DWORD i = 0; i < pAnnotList->GetCount(); i ++) { 73 CPDF_Dictionary* pAnnot = pAnnotList->GetDict(i); 74 if (pAnnot == NULL) { 75 continue; 76 } 77 if (pAnnot->GetString("Subtype") != "Link") { 78 continue; 79 } 80 pList->Add(pAnnot); 81 } 82} 83CPDF_Rect CPDF_Link::GetRect() 84{ 85 return m_pDict->GetRect("Rect"); 86} 87CPDF_Dest CPDF_Link::GetDest(CPDF_Document* pDoc) 88{ 89 CPDF_Object* pDest = m_pDict->GetElementValue("Dest"); 90 if (pDest == NULL) { 91 return NULL; 92 } 93 if (pDest->GetType() == PDFOBJ_STRING || pDest->GetType() == PDFOBJ_NAME) { 94 CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests")); 95 CFX_ByteStringC name = pDest->GetString(); 96 return name_tree.LookupNamedDest(pDoc, name); 97 } else if (pDest->GetType() == PDFOBJ_ARRAY) { 98 return (CPDF_Array*)pDest; 99 } 100 return NULL; 101} 102CPDF_Action CPDF_Link::GetAction() 103{ 104 return m_pDict->GetDict("A"); 105} 106