pdfium_test: print out some annotations

fpdfsdk/fpdfdoc.cpp

Index: fpdfsdk/fpdfdoc.cpp
diff --git a/fpdfsdk/fpdfdoc.cpp b/fpdfsdk/fpdfdoc.cpp
index 7473cb06711dce26a731c5e17bf492862e1ad4e2..72c0f40d9eae833ad56c3f312658e28f7f047526 100644
--- a/fpdfsdk/fpdfdoc.cpp
+++ b/fpdfsdk/fpdfdoc.cpp
@@ -11,6 +11,8 @@
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_name.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_number.h"
 #include "fpdfsdk/include/fsdk_define.h"
 #include "third_party/base/stl_util.h"
 
@@ -218,6 +220,27 @@ DLLEXPORT unsigned long STDCALL FPDFDest_GetPageIndex(FPDF_DOCUMENT document,
   return dest.GetPageIndex(pDoc);
 }
 
+DLLEXPORT FPDF_BOOL STDCALL FPDFDest_GetLocationInPage(FPDF_DEST pDict,
+                                                       FS_FLOAT* x,
+                                                       FS_FLOAT* y) {
+  if (!pDict || !x || !y)
+    return FALSE;
+
+  CPDF_Array* dest = static_cast<CPDF_Array*>(pDict);
+  if (dest->GetCount() < 4)
+    return FALSE;
+
+  const CPDF_Name* xyz = ToName(dest->GetDirectObjectAt(1));
+  const CPDF_Number* numX = ToNumber(dest->GetDirectObjectAt(2));
+  const CPDF_Number* numY = ToNumber(dest->GetDirectObjectAt(3));
+  if (!xyz || xyz->GetString() != "XYZ" || !numX || !numY)
+    return FALSE;
+
+  *x = numX->GetNumber();
+  *y = numY->GetNumber();
+  return TRUE;
+}
+
 DLLEXPORT FPDF_LINK STDCALL FPDFLink_GetLinkAtPoint(FPDF_PAGE page,
                                                     double x,
                                                     double y) {