XFA: More underlying types

fpdfsdk/src/fpdfformfill.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_formfill.h"
 
 #include "../include/fpdfxfa/fpdfxfa_app.h"
 #include "../include/fpdfxfa/fpdfxfa_doc.h"
@@ skipping 251 matching lines @@
 
 DLLEXPORT void STDCALL FPDF_FFLDraw(FPDF_FORMHANDLE hHandle,
                                     FPDF_BITMAP bitmap,
                                     FPDF_PAGE page,
                                     int start_x,
                                     int start_y,
                                     int size_x,
                                     int size_y,
                                     int rotate,
                                     int flags) {
-  if (!hHandle || !page)
+  if (!hHandle)
     return;
 
-  CPDFXFA_Page* pPage = (CPDFXFA_Page*)page;
+  UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
+  if (!pPage)
+    return;
+
   CPDFXFA_Document* pDocument = pPage->GetDocument();
   if (!pDocument)
     return;
+
   CPDF_Document* pPDFDoc = pDocument->GetPDFDoc();
   if (!pPDFDoc)
     return;
 
   CPDFDoc_Environment* pEnv = (CPDFDoc_Environment*)hHandle;
   CPDFSDK_Document* pFXDoc = pEnv->GetSDKDocument();
   if (!pFXDoc)
     return;
 
   CFX_AffineMatrix matrix;
@@ skipping 25 matching lines @@
 
   // Grayscale output
   if (flags & FPDF_GRAYSCALE) {
     options.m_ColorMode = RENDER_COLOR_GRAY;
     options.m_ForeColor = 0;
     options.m_BackColor = 0xffffff;
   }
   options.m_AddFlags = flags >> 8;
   options.m_pOCContext = new CPDF_OCContext(pPDFDoc);
 
-  if (CPDFSDK_PageView* pPageView = pFXDoc->GetPageView((CPDFXFA_Page*)page))
+  if (CPDFSDK_PageView* pPageView = pFXDoc->GetPageView(pPage))
     pPageView->PageView_OnDraw(pDevice.get(), &matrix, &options, clip);
 
   pDevice->RestoreState();
   delete options.m_pOCContext;
   options.m_pOCContext = NULL;
 }
 DLLEXPORT void STDCALL FPDF_Widget_Undo(FPDF_DOCUMENT document,
                                         FPDF_WIDGET hWidget) {
   if (NULL == hWidget || NULL == document)
     return;
@@ skipping 343 matching lines @@
         pActionHandler->DoAction_Page(action, CPDF_AAction::OpenPage, pSDKDoc);
       }
     } else {
       if (aa.ActionExist(CPDF_AAction::ClosePage)) {
         CPDF_Action action = aa.GetAction(CPDF_AAction::ClosePage);
         pActionHandler->DoAction_Page(action, CPDF_AAction::ClosePage, pSDKDoc);
       }
     }
   }
 }