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"
~CPDF_LinkList()8 CPDF_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 }
GetPageLinks(CPDF_Page * pPage)17 CFX_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 }
CountLinks(CPDF_Page * pPage)34 int 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 }
GetLink(CPDF_Page * pPage,int index)42 CPDF_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 }
GetLinkAtPoint(CPDF_Page * pPage,FX_FLOAT pdf_x,FX_FLOAT pdf_y)50 CPDF_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 }
LoadPageLinks(CPDF_Page * pPage,CFX_PtrArray * pList)66 void 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 }
GetRect()83 CPDF_Rect CPDF_Link::GetRect()
84 {
85 return m_pDict->GetRect("Rect");
86 }
GetDest(CPDF_Document * pDoc)87 CPDF_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 }
GetAction()102 CPDF_Action CPDF_Link::GetAction()
103 {
104 return m_pDict->GetDict("A");
105 }
106