Get rid of NULLs in fpdfsdk/

fpdfsdk/formfiller/cffl_formfiller.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 "fpdfsdk/formfiller/cffl_formfiller.h"
 
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "fpdfsdk/formfiller/cba_fontmap.h"
@@ skipping 70 matching lines @@
                              uint32_t dwFlags) {
   ASSERT(pAnnot->GetPDFAnnot()->GetSubType() == "Widget");
 
   if (CPWL_Wnd* pWnd = GetPDFWindow(pPageView, FALSE)) {
     CFX_Matrix mt = GetCurMatrix();
     mt.Concat(*pUser2Device);
     pWnd->DrawAppearance(pDevice, &mt);
   } else {
     CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
     if (CFFL_IFormFiller::IsVisible(pWidget))
-      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
+      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal,
+                              nullptr);
   }
 }
 
 void CFFL_FormFiller::OnDrawDeactive(CPDFSDK_PageView* pPageView,
                                      CPDFSDK_Annot* pAnnot,
                                      CFX_RenderDevice* pDevice,
                                      CFX_Matrix* pUser2Device,
                                      uint32_t dwFlags) {
   CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
-  pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
+  pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, nullptr);
 }
 
 void CFFL_FormFiller::OnCreate(CPDFSDK_Annot* pAnnot) {}
 
 void CFFL_FormFiller::OnLoad(CPDFSDK_Annot* pAnnot) {}
 
 void CFFL_FormFiller::OnDelete(CPDFSDK_Annot* pAnnot) {}
 
 void CFFL_FormFiller::OnMouseEnter(CPDFSDK_PageView* pPageView,
                                    CPDFSDK_Annot* pAnnot) {}
@@ skipping 174 matching lines @@
 }
 
 FX_BOOL CFFL_FormFiller::IsValid() const {
   return m_bValid;
 }
 
 PWL_CREATEPARAM CFFL_FormFiller::GetCreateParam() {
   ASSERT(m_pApp);
 
   PWL_CREATEPARAM cp;
-  cp.pParentWnd = NULL;
+  cp.pParentWnd = nullptr;
   cp.pProvider = this;
   cp.rcRectWnd = GetPDFWindowRect();
 
   uint32_t dwCreateFlags = PWS_BORDER | PWS_BACKGROUND | PWS_VISIBLE;
   uint32_t dwFieldFlag = m_pWidget->GetFieldFlags();
   if (dwFieldFlag & FIELDFLAG_READONLY) {
     dwCreateFlags |= PWS_READONLY;
   }
 
   FX_COLORREF color;
@@ skipping 376 matching lines @@
                          CPDFSDK_Annot* pAnnot,
                          CFX_RenderDevice* pDevice,
                          CFX_Matrix* pUser2Device,
                          uint32_t dwFlags) {
   ASSERT(pPageView);
   CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
   CPDF_FormControl* pCtrl = pWidget->GetFormControl();
   CPDF_FormControl::HighlightingMode eHM = pCtrl->GetHighlightingMode();
 
   if (eHM != CPDF_FormControl::Push) {
-    pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
+    pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, nullptr);
     return;
   }
 
   if (m_bMouseDown) {
     if (pWidget->IsWidgetAppearanceValid(CPDF_Annot::Down))
-      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Down, NULL);
+      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Down, nullptr);
     else
-      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
+      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal,
+                              nullptr);
   } else if (m_bMouseIn) {
     if (pWidget->IsWidgetAppearanceValid(CPDF_Annot::Rollover))
       pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Rollover,
-                              NULL);
+                              nullptr);
     else
-      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
+      pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal,
+                              nullptr);
   } else {
-    pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, NULL);
+    pWidget->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, nullptr);
   }
 }
 
 void CFFL_Button::OnDrawDeactive(CPDFSDK_PageView* pPageView,
                                  CPDFSDK_Annot* pAnnot,
                                  CFX_RenderDevice* pDevice,
                                  CFX_Matrix* pUser2Device,
                                  uint32_t dwFlags) {
   OnDraw(pPageView, pAnnot, pDevice, pUser2Device, dwFlags);
 }