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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "../../include/fpdfdoc/fpdf_doc.h" | 7 #include "../../include/fpdfdoc/fpdf_doc.h" |
8 | 8 |
9 CPDF_LinkList::CPDF_LinkList() {} | |
10 | |
9 CPDF_LinkList::~CPDF_LinkList() { | 11 CPDF_LinkList::~CPDF_LinkList() { |
10 FX_POSITION pos = m_PageMap.GetStartPosition(); | 12 FX_POSITION pos = m_PageMap.GetStartPosition(); |
11 while (pos) { | 13 while (pos) { |
12 void* key; | 14 void* key; |
13 void* value; | 15 void* value; |
14 m_PageMap.GetNextAssoc(pos, key, value); | 16 m_PageMap.GetNextAssoc(pos, key, value); |
15 delete (CFX_PtrArray*)value; | 17 delete (CFX_PtrArray*)value; |
16 } | 18 } |
17 } | 19 } |
20 | |
18 CFX_PtrArray* CPDF_LinkList::GetPageLinks(CPDF_Page* pPage) { | 21 CFX_PtrArray* CPDF_LinkList::GetPageLinks(CPDF_Page* pPage) { |
19 FX_DWORD objnum = pPage->m_pFormDict->GetObjNum(); | 22 FX_DWORD objnum = pPage->m_pFormDict->GetObjNum(); |
20 if (objnum == 0) { | 23 if (objnum == 0) |
21 return NULL; | 24 return nullptr; |
22 } | 25 |
23 CFX_PtrArray* pPageLinkList = NULL; | 26 CFX_PtrArray* pPageLinkList = nullptr; |
24 if (!m_PageMap.Lookup((void*)(uintptr_t)objnum, (void*&)pPageLinkList)) { | 27 if (!m_PageMap.Lookup((void*)(uintptr_t)objnum, (void*&)pPageLinkList)) { |
25 pPageLinkList = new CFX_PtrArray; | 28 pPageLinkList = new CFX_PtrArray; |
26 m_PageMap.SetAt((void*)(uintptr_t)objnum, pPageLinkList); | 29 m_PageMap.SetAt((void*)(uintptr_t)objnum, pPageLinkList); |
27 LoadPageLinks(pPage, pPageLinkList); | 30 LoadPageLinks(pPage, pPageLinkList); |
28 } | 31 } |
29 return pPageLinkList; | 32 return pPageLinkList; |
30 } | 33 } |
31 int CPDF_LinkList::CountLinks(CPDF_Page* pPage) { | 34 |
32 CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); | |
33 if (pPageLinkList == NULL) { | |
34 return 0; | |
35 } | |
36 return pPageLinkList->GetSize(); | |
37 } | |
38 CPDF_Link CPDF_LinkList::GetLink(CPDF_Page* pPage, int index) { | |
39 CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); | |
40 if (!pPageLinkList) { | |
41 return CPDF_Link(); | |
42 } | |
43 return CPDF_Link((CPDF_Dictionary*)pPageLinkList->GetAt(index)); | |
44 } | |
45 CPDF_Link CPDF_LinkList::GetLinkAtPoint(CPDF_Page* pPage, | 35 CPDF_Link CPDF_LinkList::GetLinkAtPoint(CPDF_Page* pPage, |
46 FX_FLOAT pdf_x, | 36 FX_FLOAT pdf_x, |
47 FX_FLOAT pdf_y) { | 37 FX_FLOAT pdf_y, |
38 int* z_order) { | |
48 CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); | 39 CFX_PtrArray* pPageLinkList = GetPageLinks(pPage); |
49 if (!pPageLinkList) { | 40 if (!pPageLinkList) |
50 return CPDF_Link(); | 41 return CPDF_Link(); |
51 } | 42 |
52 int size = pPageLinkList->GetSize(); | 43 int size = pPageLinkList->GetSize(); |
Tom Sepez
2015/08/07 18:14:06
Nit: wish this were consistent with the index type
Lei Zhang
2015/08/07 23:03:41
Converting |pPageLinkList| from a CFX_PtrArray to
| |
53 for (int i = size - 1; i >= 0; --i) { | 44 for (int i = size - 1; i >= 0; --i) { |
54 CPDF_Link link((CPDF_Dictionary*)pPageLinkList->GetAt(i)); | 45 CPDF_Dictionary* pAnnot = (CPDF_Dictionary*)pPageLinkList->GetAt(i); |
46 if (!pAnnot) | |
47 continue; | |
48 | |
49 CPDF_Link link(pAnnot); | |
55 CPDF_Rect rect = link.GetRect(); | 50 CPDF_Rect rect = link.GetRect(); |
56 if (rect.Contains(pdf_x, pdf_y)) { | 51 if (!rect.Contains(pdf_x, pdf_y)) |
57 return link; | 52 continue; |
58 } | 53 |
54 if (z_order) | |
55 *z_order = i; | |
56 return link; | |
59 } | 57 } |
60 return CPDF_Link(); | 58 return CPDF_Link(); |
61 } | 59 } |
60 | |
62 void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage, CFX_PtrArray* pList) { | 61 void CPDF_LinkList::LoadPageLinks(CPDF_Page* pPage, CFX_PtrArray* pList) { |
63 CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArray("Annots"); | 62 CPDF_Array* pAnnotList = pPage->m_pFormDict->GetArray("Annots"); |
64 if (pAnnotList == NULL) { | 63 if (!pAnnotList) |
65 return; | 64 return; |
66 } | 65 |
67 for (FX_DWORD i = 0; i < pAnnotList->GetCount(); i++) { | 66 for (FX_DWORD i = 0; i < pAnnotList->GetCount(); ++i) { |
68 CPDF_Dictionary* pAnnot = pAnnotList->GetDict(i); | 67 CPDF_Dictionary* pAnnot = pAnnotList->GetDict(i); |
69 if (pAnnot == NULL) { | 68 bool add_link = (pAnnot && pAnnot->GetString("Subtype") == "Link"); |
70 continue; | 69 // Add non-links as nullptrs to preserve z-order. |
71 } | 70 pList->Add(add_link ? pAnnot : nullptr); |
72 if (pAnnot->GetString("Subtype") != "Link") { | |
73 continue; | |
74 } | |
75 pList->Add(pAnnot); | |
76 } | 71 } |
77 } | 72 } |
73 | |
78 CPDF_Rect CPDF_Link::GetRect() { | 74 CPDF_Rect CPDF_Link::GetRect() { |
79 return m_pDict->GetRect("Rect"); | 75 return m_pDict->GetRect("Rect"); |
80 } | 76 } |
81 CPDF_Dest CPDF_Link::GetDest(CPDF_Document* pDoc) { | 77 CPDF_Dest CPDF_Link::GetDest(CPDF_Document* pDoc) { |
82 CPDF_Object* pDest = m_pDict->GetElementValue("Dest"); | 78 CPDF_Object* pDest = m_pDict->GetElementValue("Dest"); |
83 if (pDest == NULL) { | 79 if (pDest == NULL) { |
84 return CPDF_Dest(); | 80 return CPDF_Dest(); |
85 } | 81 } |
86 if (pDest->GetType() == PDFOBJ_STRING || pDest->GetType() == PDFOBJ_NAME) { | 82 if (pDest->GetType() == PDFOBJ_STRING || pDest->GetType() == PDFOBJ_NAME) { |
87 CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests")); | 83 CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests")); |
88 CFX_ByteStringC name = pDest->GetString(); | 84 CFX_ByteStringC name = pDest->GetString(); |
89 return CPDF_Dest(name_tree.LookupNamedDest(pDoc, name)); | 85 return CPDF_Dest(name_tree.LookupNamedDest(pDoc, name)); |
90 } | 86 } |
91 if (pDest->GetType() == PDFOBJ_ARRAY) { | 87 if (pDest->GetType() == PDFOBJ_ARRAY) { |
92 return CPDF_Dest((CPDF_Array*)pDest); | 88 return CPDF_Dest((CPDF_Array*)pDest); |
93 } | 89 } |
94 return CPDF_Dest(); | 90 return CPDF_Dest(); |
95 } | 91 } |
96 CPDF_Action CPDF_Link::GetAction() { | 92 CPDF_Action CPDF_Link::GetAction() { |
97 return CPDF_Action(m_pDict->GetDict("A")); | 93 return CPDF_Action(m_pDict->GetDict("A")); |
98 } | 94 } |
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