fpdfsdk/ differences with XFA (for didactic purposes only).

fpdfsdk/src/fsdk_baseannot.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 "core/include/fxcrt/fx_ext.h"
+#ifdef PDF_ENABLE_XFA
+#include "fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h"
+#endif
 #include "fpdfsdk/include/fsdk_baseannot.h"
 #include "fpdfsdk/include/fsdk_define.h"
 #include "fpdfsdk/include/fsdk_mgr.h"
 
 int _gAfxGetTimeZoneInSeconds(FX_CHAR tzhour, uint8_t tzminute) {
   return (int)tzhour * 3600 + (int)tzminute * (tzhour >= 0 ? 60 : -60);
 }
 
 FX_BOOL _gAfxIsLeapYear(int16_t year) {
   return ((year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0)));
@@ skipping 941 matching lines @@
 
   if (AAction.ActionExist(eAAT))
     return AAction.GetAction(eAAT);
 
   if (eAAT == CPDF_AAction::ButtonUp)
     return GetAction();
 
   return CPDF_Action();
 }
 
+#ifdef PDF_ENABLE_XFA
+FX_BOOL CPDFSDK_BAAnnot::IsXFAField() {
+  return FALSE;
+}
+
+#endif
 void CPDFSDK_BAAnnot::Annot_OnDraw(CFX_RenderDevice* pDevice,
                                    CPDF_Matrix* pUser2Device,
                                    CPDF_RenderOptions* pOptions) {
   m_pAnnot->GetAPForm(m_pPageView->GetPDFPage(), CPDF_Annot::Normal);
   m_pAnnot->DrawAppearance(m_pPageView->GetPDFPage(), pDevice, pUser2Device,
                            CPDF_Annot::Normal, NULL);
 
   return;
 }
 
 UnderlyingPageType* CPDFSDK_Annot::GetUnderlyingPage() {
+#ifndef PDF_ENABLE_XFA
   return GetPDFPage();
+#else
+  return GetPDFXFAPage();
+#endif
 }
 
 CPDF_Page* CPDFSDK_Annot::GetPDFPage() {
   if (m_pPageView)
     return m_pPageView->GetPDFPage();
   return NULL;
 }
+#ifdef PDF_ENABLE_XFA
+
+CPDFXFA_Page* CPDFSDK_Annot::GetPDFXFAPage() {
+  if (m_pPageView)
+    return m_pPageView->GetPDFXFAPage();
+  return NULL;
+}
+#endif