fpdfsdk/src/fpdfdoc.cpp

   1 // Copyright 2014 PDFium Authors. All rights reserved.\r
   2 // Use of this source code is governed by a BSD-style license that can be\r
   3 // found in the LICENSE file.\r
   4  \r
   5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com\r
   6 \r
   7 #include "../include/fsdk_define.h"\r
   8 #include "../include/fpdfdoc.h"\r
   9 \r
  10 static int this_module = 0;\r
  11 \r
  12 static CPDF_Bookmark FindBookmark(CPDF_BookmarkTree& tree, CPDF_Bookmark This, const CFX_WideString& title)\r
  13 {\r
  14         if (This != NULL) {\r
  15                 // First check this item\r
  16                 CFX_WideString this_title = This.GetTitle();\r
  17                 if (this_title.CompareNoCase(title) == 0)\r
  18                         return This;\r
  19         }\r
  20         // go into children items\r
  21         CPDF_Bookmark Child = tree.GetFirstChild(This);\r
  22         while (Child != NULL) {\r
  23                 // check if this item\r
  24                 CPDF_Bookmark Found = FindBookmark(tree, Child, title);\r
  25                 if (Found) return Found;\r
  26                 Child = tree.GetNextSibling(Child);\r
  27         }\r
  28         return NULL;\r
  29 }\r
  30 \r
  31 DLLEXPORT FPDF_BOOKMARK STDCALL FPDFBookmark_Find(FPDF_DOCUMENT document, FPDF_WIDESTRING title)\r
  32 {\r
  33         if (document == NULL) return NULL;\r
  34         if (title == NULL || title[0] == 0) return NULL;\r
  35 \r
  36         CPDF_Document* pDoc = (CPDF_Document*)document;\r
  37         CPDF_BookmarkTree tree(pDoc);\r
  38 \r
  39         CFX_WideString wstr = CFX_WideString::FromUTF16LE(title);\r
  40         return FindBookmark(tree, NULL, wstr);\r
  41 }\r
  42 \r
  43 DLLEXPORT FPDF_DEST STDCALL FPDFBookmark_GetDest(FPDF_DOCUMENT document, FPDF_BOOKMARK bookmark)\r
  44 {\r
  45         if (document == NULL) return NULL;\r
  46         if (bookmark == NULL) return NULL;\r
  47 \r
  48         CPDF_Bookmark Bookmark = (CPDF_Dictionary*)bookmark;\r
  49         CPDF_Document* pDoc = (CPDF_Document*)document;\r
  50         CPDF_Dest dest = Bookmark.GetDest(pDoc);\r
  51         if (dest != NULL) return dest;\r
  52 \r
  53         // If this bookmark is not directly associated with a dest, we try to get action\r
  54         CPDF_Action Action = Bookmark.GetAction();\r
  55         if (Action == NULL) return NULL;\r
  56         return Action.GetDest(pDoc);\r
  57 }\r
  58 \r
  59 DLLEXPORT FPDF_ACTION STDCALL FPDFBookmark_GetAction(FPDF_BOOKMARK bookmark)\r
  60 {\r
  61         if (bookmark == NULL) return NULL;\r
  62 \r
  63         CPDF_Bookmark Bookmark = (CPDF_Dictionary*)bookmark;\r
  64         return Bookmark.GetAction();\r
  65 }\r
  66 \r
  67 DLLEXPORT unsigned long STDCALL FPDFAction_GetType(FPDF_ACTION action)\r
  68 {\r
  69         if (action == NULL) return 0;\r
  70 \r
  71         CPDF_Action Action = (CPDF_Dictionary*)action;\r
  72         CPDF_Action::ActionType type = Action.GetType();\r
  73         switch (type) {\r
  74         case CPDF_Action::GoTo:\r
  75                 return PDFACTION_GOTO;\r
  76         case CPDF_Action::GoToR:\r
  77                 return PDFACTION_REMOTEGOTO;\r
  78         case CPDF_Action::URI:\r
  79                 return PDFACTION_URI;\r
  80         case CPDF_Action::Launch:\r
  81                 return PDFACTION_LAUNCH;\r
  82         default:\r
  83                 return PDFACTION_UNSUPPORTED;\r
  84         }\r
  85         return PDFACTION_UNSUPPORTED;\r
  86 }\r
  87 \r
  88 DLLEXPORT FPDF_DEST STDCALL FPDFAction_GetDest(FPDF_DOCUMENT document, FPDF_ACTION action)\r
  89 {\r
  90         if (document == NULL) return NULL;\r
  91         if (action == NULL) return NULL;\r
  92         CPDF_Document* pDoc = (CPDF_Document*)document;\r
  93         CPDF_Action Action = (CPDF_Dictionary*)action;\r
  94 \r
  95         return Action.GetDest(pDoc);\r
  96 }\r
  97 \r
  98 DLLEXPORT unsigned long STDCALL FPDFAction_GetURIPath(FPDF_DOCUMENT document, FPDF_ACTION action, \r
  99                                                                                           void* buffer, unsigned long buflen)\r
 100 {\r
 101         if (document == NULL) return 0;\r
 102         if (action == NULL) return 0;\r
 103         CPDF_Document* pDoc = (CPDF_Document*)document;\r
 104         CPDF_Action Action = (CPDF_Dictionary*)action;\r
 105 \r
 106         CFX_ByteString path = Action.GetURI(pDoc);\r
 107         unsigned long len = path.GetLength() + 1;\r
 108         if (buffer != NULL && buflen >= len)\r
 109                 FXSYS_memcpy(buffer, (FX_LPCSTR)path, len);\r
 110         return len;\r
 111 }\r
 112 \r
 113 DLLEXPORT unsigned long STDCALL FPDFDest_GetPageIndex(FPDF_DOCUMENT document, FPDF_DEST dest)\r
 114 {\r
 115         if (document == NULL) return 0;\r
 116         if (dest == NULL) return 0;\r
 117         CPDF_Document* pDoc = (CPDF_Document*)document;\r
 118         CPDF_Dest Dest = (CPDF_Array*)dest;\r
 119 \r
 120         return Dest.GetPageIndex(pDoc);\r
 121 }\r
 122 \r
 123 static void ReleaseLinkList(FX_LPVOID data)\r
 124 {\r
 125         delete (CPDF_LinkList*)data;\r
 126 }\r
 127 \r
 128 DLLEXPORT FPDF_LINK STDCALL FPDFLink_GetLinkAtPoint(FPDF_PAGE page, double x, double y)\r
 129 {\r
 130         if (page == NULL) return NULL;\r
 131         CPDF_Page* pPage = (CPDF_Page*)page;\r
 132 \r
 133         // Link list is stored with the document\r
 134         CPDF_Document* pDoc = pPage->m_pDocument;\r
 135         CPDF_LinkList* pLinkList = (CPDF_LinkList*)pDoc->GetPrivateData(&this_module);\r
 136         if (pLinkList == NULL) {\r
 137                 pLinkList = FX_NEW CPDF_LinkList(pDoc);\r
 138                 pDoc->SetPrivateData(&this_module, pLinkList, ReleaseLinkList);\r
 139         }\r
 140 \r
 141         return pLinkList->GetLinkAtPoint(pPage, (FX_FLOAT)x, (FX_FLOAT)y);\r
 142 }\r
 143 \r
 144 DLLEXPORT FPDF_DEST STDCALL FPDFLink_GetDest(FPDF_DOCUMENT document, FPDF_LINK link)\r
 145 {\r
 146         if (document == NULL) return NULL;\r
 147         CPDF_Document* pDoc = (CPDF_Document*)document;\r
 148         if (link == NULL) return NULL;\r
 149         CPDF_Link Link = (CPDF_Dictionary*)link;\r
 150 \r
 151         FPDF_DEST dest = Link.GetDest(pDoc);\r
 152         if (dest) return dest;\r
 153 \r
 154         // If this link is not directly associated with a dest, we try to get action\r
 155         CPDF_Action Action = Link.GetAction();\r
 156         if (Action == NULL) return NULL;\r
 157         return Action.GetDest(pDoc);\r
 158 }\r
 159 \r
 160 DLLEXPORT FPDF_ACTION STDCALL FPDFLink_GetAction(FPDF_LINK link)\r
 161 {\r
 162         if (link == NULL) return NULL;\r
 163         CPDF_Link Link = (CPDF_Dictionary*)link;\r
 164 \r
 165         return Link.GetAction();\r
 166 }\r
 167 \r
 168 DLLEXPORT FPDF_BOOL STDCALL FPDFLink_Enumerate(FPDF_PAGE page, int* startPos, FPDF_LINK* linkAnnot)\r
 169 {\r
 170         if(!page || !startPos || !linkAnnot)\r
 171                 return FALSE;\r
 172         CPDF_Page* pPage = (CPDF_Page*)page;\r
 173         if(!pPage->m_pFormDict) return FALSE;\r
 174         CPDF_Array* pAnnots = pPage->m_pFormDict->GetArray("Annots");\r
 175         if(!pAnnots) return FALSE;\r
 176         for (int i = *startPos; i < (int)pAnnots->GetCount(); i ++) {\r
 177                 CPDF_Dictionary* pDict = (CPDF_Dictionary*)pAnnots->GetElementValue(i);\r
 178                 if (pDict == NULL || pDict->GetType() != PDFOBJ_DICTIONARY) continue;\r
 179                 if(pDict->GetString(FX_BSTRC("Subtype")).Equal(FX_BSTRC("Link")))\r
 180                 {\r
 181                         *startPos = i+1;\r
 182                         *linkAnnot = (FPDF_LINK)pDict; \r
 183                         return TRUE;\r
 184                 }\r
 185         }\r
 186         return FALSE;\r
 187 }\r
 188 \r
 189 DLLEXPORT FPDF_BOOL STDCALL FPDFLink_GetAnnotRect(FPDF_LINK linkAnnot, FS_RECTF* rect)\r
 190 {\r
 191         if(!linkAnnot || !rect)\r
 192                 return FALSE;\r
 193         CPDF_Dictionary* pAnnotDict = (CPDF_Dictionary*)linkAnnot;\r
 194         CPDF_Rect rt = pAnnotDict->GetRect(FX_BSTRC("Rect"));\r
 195         rect->left = rt.left;\r
 196         rect->bottom = rt.bottom;\r
 197         rect->right = rt.right;\r
 198         rect->top = rt.top;\r
 199         return TRUE;\r
 200 }\r
 201 \r
 202 DLLEXPORT int STDCALL FPDFLink_CountQuadPoints(FPDF_LINK linkAnnot)\r
 203 {\r
 204         if(!linkAnnot)\r
 205                 return 0;\r
 206         CPDF_Dictionary* pAnnotDict = (CPDF_Dictionary*)linkAnnot;\r
 207         CPDF_Array* pArray = pAnnotDict->GetArray(FX_BSTRC("QuadPoints"));\r
 208         if (pArray == NULL)\r
 209                 return 0;\r
 210         else\r
 211                 return pArray->GetCount() / 8;\r
 212 }\r
 213 \r
 214 DLLEXPORT FPDF_BOOL STDCALL FPDFLink_GetQuadPoints(FPDF_LINK linkAnnot, int quadIndex, FS_QUADPOINTSF* quadPoints)\r
 215 {\r
 216         if(!linkAnnot || !quadPoints)\r
 217                 return FALSE;\r
 218         CPDF_Dictionary* pAnnotDict = (CPDF_Dictionary*)linkAnnot;\r
 219         CPDF_Array* pArray = pAnnotDict->GetArray(FX_BSTRC("QuadPoints"));\r
 220         if (pArray) {\r
 221                 if (0 > quadIndex || quadIndex >= (int)pArray->GetCount()/8 ||\r
 222                         ((quadIndex*8+7) >= (int)pArray->GetCount())) return FALSE;\r
 223                 quadPoints->x1 = pArray->GetNumber(quadIndex*8);\r
 224                 quadPoints->y1 = pArray->GetNumber(quadIndex*8+1);\r
 225                 quadPoints->x2 = pArray->GetNumber(quadIndex*8+2);\r
 226                 quadPoints->y2 = pArray->GetNumber(quadIndex*8+3);\r
 227                 quadPoints->x3 = pArray->GetNumber(quadIndex*8+4);\r
 228                 quadPoints->y3 = pArray->GetNumber(quadIndex*8+5);\r
 229                 quadPoints->x4 = pArray->GetNumber(quadIndex*8+6);\r
 230                 quadPoints->y4 = pArray->GetNumber(quadIndex*8+7);\r
 231                 return TRUE;\r
 232         } \r
 233         return FALSE;\r
 234 }\r
 235 \r
 236 \r
 237 DLLEXPORT unsigned long STDCALL FPDF_GetMetaText(FPDF_DOCUMENT doc, FPDF_BYTESTRING tag,\r
 238                                                                                                  void* buffer, unsigned long buflen)\r
 239 {\r
 240         if (doc == NULL || tag == NULL) return 0;\r
 241 \r
 242         CPDF_Document* pDoc = (CPDF_Document*)doc;\r
 243         // Get info dictionary\r
 244         CPDF_Dictionary* pInfo = pDoc->GetInfo();\r
 245         if (pInfo == NULL) return 0;\r
 246 \r
 247         CFX_WideString text = pInfo->GetUnicodeText(tag);\r
 248 \r
 249         // Use UTF-16LE encoding\r
 250         CFX_ByteString bstr = text.UTF16LE_Encode();\r
 251         unsigned long len = bstr.GetLength();\r
 252         if (buffer != NULL || buflen >= len+2) {\r
 253                 FXSYS_memcpy(buffer, (FX_LPCSTR)bstr, len);\r
 254                 // use double zero as trailer\r
 255                 ((FX_BYTE*)buffer)[len] = ((FX_BYTE*)buffer)[len+1] = 0;\r
 256         }\r
 257         return len+2;\r
 258 }\r
 259 \r