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// 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 "../../include/fxcrt/fx_safe_types.h"
CPDF_LinkList::~CPDF_LinkList()
{
FX_POSITION pos = m_PageMap.GetStartPosition();
while (pos) {
void* key;
void* 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((void*)(uintptr_t)objnum, (void*&)pPageLinkList)) {
pPageLinkList = new CFX_PtrArray;
m_PageMap.SetAt((void*)(uintptr_t)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"));
}
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