Add FPDFDest_GetLocationInPage API

fpdfsdk/fpdfdoc.cpp

 // 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 "public/fpdf_doc.h"
 
 #include <set>
 
 #include "core/fpdfapi/page/cpdf_page.h"
 #include "core/fpdfapi/parser/cpdf_array.h"
 #include "core/fpdfapi/parser/cpdf_document.h"
 #include "core/fpdfdoc/cpdf_bookmark.h"
 #include "core/fpdfdoc/cpdf_bookmarktree.h"
+#include "core/fpdfdoc/cpdf_dest.h"
 #include "fpdfsdk/fsdk_define.h"
 #include "third_party/base/stl_util.h"
 
 namespace {
 
 CPDF_Bookmark FindBookmark(const CPDF_BookmarkTree& tree,
                            CPDF_Bookmark bookmark,
                            const CFX_WideString& title,
                            std::set<CPDF_Dictionary*>* visited) {
   // Return if already checked to avoid circular calling.
@@ skipping 178 matching lines @@
                                                       FPDF_DEST pDict) {
   if (!pDict)
     return 0;
   CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
   if (!pDoc)
     return 0;
   CPDF_Dest dest(static_cast<CPDF_Array*>(pDict));
   return dest.GetPageIndex(pDoc);
 }
 
+DLLEXPORT FPDF_BOOL STDCALL FPDFDest_GetLocationInPage(FPDF_DEST pDict,
+                                                       FPDF_BOOL* hasXVal,
+                                                       FPDF_BOOL* hasYVal,
+                                                       FPDF_BOOL* hasZoomVal,
+                                                       FS_FLOAT* x,
+                                                       FS_FLOAT* y,
+                                                       FS_FLOAT* zoom) {
+  if (!pDict)
+    return false;
+
+  std::unique_ptr<CPDF_Dest> dest(
+      new CPDF_Dest(static_cast<CPDF_Object*>(pDict)));
+
+  // FPDF_BOOL is an int, GetXYZ expects bools.
+  bool bHasX;
+  bool bHasY;
+  bool bHasZoom;
+  if (!dest->GetXYZ(&bHasX, &bHasY, &bHasZoom, x, y, zoom))
+    return false;
+
+  *hasXVal = bHasX;
+  *hasYVal = bHasY;
+  *hasZoomVal = bHasZoom;
+  return true;
+}
+
 DLLEXPORT FPDF_LINK STDCALL FPDFLink_GetLinkAtPoint(FPDF_PAGE page,
                                                     double x,
                                                     double y) {
   CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
   if (!pPage)
     return nullptr;
 
   CPDF_LinkList* pLinkList = GetLinkList(pPage);
   if (!pLinkList)
     return nullptr;
@@ skipping 134 matching lines @@
     return 0;
   CFX_WideString text = pInfo->GetUnicodeTextFor(tag);
   // Use UTF-16LE encoding
   CFX_ByteString encodedText = text.UTF16LE_Encode();
   unsigned long len = encodedText.GetLength();
   if (buffer && buflen >= len) {
     FXSYS_memcpy(buffer, encodedText.c_str(), len);
   }
   return len;
 }