Trigger page view event when re-layout is finished

xfa/include/fxfa/fxfa.h

 // 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
 
 #ifndef XFA_INCLUDE_FXFA_FXFA_H_
 #define XFA_INCLUDE_FXFA_FXFA_H_
 
 #include <vector>
@@ skipping 336 matching lines @@
 #define XFA_INVALIDATE_AllPages 0x00000000
 #define XFA_INVALIDATE_CurrentPage 0x00000001
 #define XFA_PRINTOPT_ShowDialog 0x00000001
 #define XFA_PRINTOPT_CanCancel 0x00000002
 #define XFA_PRINTOPT_ShrinkPage 0x00000004
 #define XFA_PRINTOPT_AsImage 0x00000008
 #define XFA_PRINTOPT_ReverseOrder 0x00000010
 #define XFA_PRINTOPT_PrintAnnot 0x00000020
 #define XFA_PAGEVIEWEVENT_PostAdded 1
 #define XFA_PAGEVIEWEVENT_PostRemoved 3
+#define XFA_PAGEVIEWEVENT_StopLayout 4
 #define XFA_WIDGETEVENT_PostAdded 2
 #define XFA_WIDGETEVENT_PreRemoved 3
 #define XFA_WIDGETEVENT_PostContentChanged 6
 #define XFA_WIDGETEVENT_ListItemRemoved 7
 #define XFA_WIDGETEVENT_ListItemAdded 8
 #define XFA_WIDGETEVENT_AccessChanged 9
 class IXFA_DocProvider {
  public:
   virtual ~IXFA_DocProvider() {}
 
@@ skipping 469 matching lines @@
                                  size_t size = 0) = 0;
   virtual void FinishChecksum() = 0;
   virtual void GetChecksum(CFX_ByteString& bsChecksum) = 0;
 
  protected:
   ~IXFA_ChecksumContext() {}
 };
 IXFA_ChecksumContext* XFA_Checksum_Create();
 
 #endif  // XFA_INCLUDE_FXFA_FXFA_H_