Get rid of NULLs in xfa/

xfa/fxfa/app/xfa_fwltheme.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 "xfa/fxfa/app/xfa_fwltheme.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
@@ skipping 27 matching lines @@
   while (pOuter && pOuter->GetOuter())
     pOuter = pOuter->GetOuter();
 
   return pOuter ? static_cast<CXFA_FFWidget*>(pOuter->GetLayoutItem())
                 : nullptr;
 }
 
 CXFA_FWLTheme::CXFA_FWLTheme(CXFA_FFApp* pApp) : m_pApp(pApp) {
   m_dwCapacity = 0;
   m_fCapacity = 0;
-  m_pCalendarFont = NULL;
+  m_pCalendarFont = nullptr;
   m_Rect.Set(0, 0, 0, 0);
   m_pCheckBoxTP = new CXFA_FWLCheckBoxTP;
   m_pListBoxTP = new CFWL_ListBoxTP;
   m_pPictureBoxTP = new CFWL_PictureBoxTP;
   m_pSrollBarTP = new CFWL_ScrollBarTP;
   m_pEditTP = new CXFA_FWLEditTP;
   m_pComboBoxTP = new CFWL_ComboBoxTP;
   m_pMonthCalendarTP = new CFWL_MonthCalendarTP;
   m_pDateTimePickerTP = new CFWL_DateTimePickerTP;
   m_pPushButtonTP = new CFWL_PushButtonTP;
@@ skipping 18 matching lines @@
 FWL_Error CXFA_FWLTheme::Initialize() {
   m_pTextOut.reset(new CFDE_TextOut);
   for (size_t i = 0; !m_pCalendarFont && i < FX_ArraySize(g_FWLTheme_CalFonts);
        ++i) {
     m_pCalendarFont = IFGAS_Font::LoadFont(g_FWLTheme_CalFonts[i], 0, 0,
                                            m_pApp->GetFDEFontMgr());
   }
   if (!m_pCalendarFont) {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
     m_pCalendarFont = m_pApp->GetFDEFontMgr()->GetDefFontByCodePage(
-        FX_CODEPAGE_MSWin_WesternEuropean, 0, NULL);
+        FX_CODEPAGE_MSWin_WesternEuropean, 0, nullptr);
 #else
     m_pCalendarFont = m_pApp->GetFDEFontMgr()->GetFontByCodePage(
-        FX_CODEPAGE_MSWin_WesternEuropean, 0, NULL);
+        FX_CODEPAGE_MSWin_WesternEuropean, 0, nullptr);
 #endif
   }
 
-  ASSERT(NULL != m_pCalendarFont);
+  ASSERT(m_pCalendarFont);
   FWLTHEME_Init();
   return FWL_Error::Succeeded;
 }
 FWL_Error CXFA_FWLTheme::Finalize() {
   m_pTextOut.reset();
   if (m_pCalendarFont) {
     m_pCalendarFont->Release();
     m_pCalendarFont = nullptr;
   }
   FWLTHEME_Release();
@@ skipping 123 matching lines @@
       if (pWidget) {
         CXFA_LayoutItem* pItem = pWidget;
         CXFA_WidgetAcc* pWidgetAcc = pWidget->GetDataAcc();
         pWidgetAcc->GetUIMargin(m_Rect);
         if (CXFA_Para para = pWidgetAcc->GetPara()) {
           m_Rect.left += para.GetMarginLeft();
           if (pWidgetAcc->IsMultiLine()) {
             m_Rect.width += para.GetMarginRight();
           }
         }
-        if (pItem->GetPrev() == NULL) {
+        if (!pItem->GetPrev()) {
           if (pItem->GetNext()) {
             m_Rect.height = 0;
           }
-        } else if (pItem->GetNext() == NULL) {
+        } else if (!pItem->GetNext()) {
           m_Rect.top = 0;
         } else {
           m_Rect.top = 0;
           m_Rect.height = 0;
         }
       }
       return &m_Rect;
     } break;
     case CFWL_WidgetCapacity::SpaceAboveBelow: {
       CXFA_FFWidget* pWidget = XFA_ThemeGetOuterWidget(pThemePart->m_pWidget);
@@ skipping 226 matching lines @@
       }
     }
     CFX_Color crLine(cr);
     pParams->m_pGraphics->SetStrokeColor(&crLine);
     pParams->m_pGraphics->SetLineWidth(fWidth);
     pParams->m_pGraphics->StrokePath(pParams->m_pPath, &pParams->m_matrix);
     return TRUE;
   }
   return CFWL_EditTP::DrawBackground(pParams);
 }