Get rid of NULLs in xfa/

xfa/fwl/theme/cfwl_widgettp.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/fwl/theme/cfwl_widgettp.h"
 
 #include <algorithm>
 
@@ skipping 131 matching lines @@
       return &m_dwValue;
     }
     case CFWL_WidgetCapacity::LineHeight: {
       m_fValue = kLineHeight;
       break;
     }
     case CFWL_WidgetCapacity::UIMargin: {
       m_rtMargin.Set(0, 0, 0, 0);
       return &m_rtMargin;
     }
-    default: { return NULL; }
+    default: { return nullptr; }
   }
   return &m_fValue;
 }
 FX_BOOL CFWL_WidgetTP::IsCustomizedLayout(IFWL_Widget* pWidget) {
   return FWL_GetThemeLayout(m_dwThemeID);
 }
 FWL_Error CFWL_WidgetTP::GetPartRect(CFWL_ThemePart* pThemePart,
                                      CFX_RectF& rect) {
   return FWL_Error::Succeeded;
 }
@@ skipping 494 matching lines @@
                                  FWLTHEME_STATE eState,
                                  CFX_Matrix* pMatrix) {
   DrawBtn(pGraphics, pRect, eState, pMatrix);
   if (!CFWL_ArrowData::IsInstance()) {
     CFWL_ArrowData::GetInstance()->SetColorData(FWL_GetThemeColor(m_dwThemeID));
   }
   CFWL_ArrowData::CColorData* pColorData =
       CFWL_ArrowData::GetInstance()->m_pColorData;
   DrawArrow(pGraphics, pRect, eDict, pColorData->clrSign[eState - 1], pMatrix);
 }
-CFWL_ArrowData::CFWL_ArrowData() : m_pColorData(NULL) {
+CFWL_ArrowData::CFWL_ArrowData() : m_pColorData(nullptr) {
   SetColorData(0);
 }
 CFWL_FontData::CFWL_FontData()
     : m_dwStyles(0),
       m_dwCodePage(0),
       m_pFont(0),
-      m_pFontMgr(NULL)
+      m_pFontMgr(nullptr)
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
       ,
-      m_pFontSource(NULL)
+      m_pFontSource(nullptr)
 #endif
 {
 }
 CFWL_FontData::~CFWL_FontData() {
   if (m_pFont) {
     m_pFont->Release();
   }
   if (m_pFontMgr) {
     m_pFontMgr->Release();
   }
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
-  if (m_pFontSource != NULL) {
+  if (m_pFontSource)
     m_pFontSource->Release();
-  }
 #endif
 }
 FX_BOOL CFWL_FontData::Equal(const CFX_WideStringC& wsFontFamily,
                              uint32_t dwFontStyles,
                              uint16_t wCodePage) {
   return m_wsFamily == wsFontFamily && m_dwStyles == dwFontStyles &&
          m_dwCodePage == wCodePage;
 }
 FX_BOOL CFWL_FontData::LoadFont(const CFX_WideStringC& wsFontFamily,
                                 uint32_t dwFontStyles,
                                 uint16_t dwCodePage) {
   m_wsFamily = wsFontFamily;
   m_dwStyles = dwFontStyles;
   m_dwCodePage = dwCodePage;
   if (!m_pFontMgr) {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
     m_pFontMgr = IFGAS_FontMgr::Create(FX_GetDefFontEnumerator());
 #else
     m_pFontSource = new CFX_FontSourceEnum_File;
     m_pFontMgr = IFGAS_FontMgr::Create(m_pFontSource);
 #endif
   }
   m_pFont = IFGAS_Font::LoadFont(wsFontFamily.c_str(), dwFontStyles, dwCodePage,
                                  m_pFontMgr);
-  return m_pFont != NULL;
+  return !!m_pFont;
 }
 
 CFWL_FontManager* CFWL_FontManager::s_FontManager = nullptr;
 CFWL_FontManager* CFWL_FontManager::GetInstance() {
   if (!s_FontManager)
     s_FontManager = new CFWL_FontManager;
   return s_FontManager;
 }
 void CFWL_FontManager::DestroyInstance() {
   delete s_FontManager;
@@ skipping 21 matching lines @@
   CFWL_ArrowData::DestroyInstance();
   CFWL_FontManager::DestroyInstance();
 }
 uint32_t FWL_GetThemeLayout(uint32_t dwThemeID) {
   return 0xffff0000 & dwThemeID;
 }
 uint32_t FWL_GetThemeColor(uint32_t dwThemeID) {
   return 0x0000ffff & dwThemeID;
 }
 
-CFWL_ArrowData* CFWL_ArrowData::m_pInstance = NULL;
+CFWL_ArrowData* CFWL_ArrowData::m_pInstance = nullptr;
 
 CFWL_ArrowData* CFWL_ArrowData::GetInstance() {
   if (!m_pInstance)
     m_pInstance = new CFWL_ArrowData;
   return m_pInstance;
 }
 
 FX_BOOL CFWL_ArrowData::IsInstance() {
   return !!m_pInstance;
 }
@@ skipping 40 matching lines @@
     m_pColorData->clrEnd[0] = ArgbEncode(255, 175, 204, 251);
     m_pColorData->clrEnd[1] = ArgbEncode(255, 185, 218, 251);
     m_pColorData->clrEnd[2] = ArgbEncode(255, 210, 222, 235);
     m_pColorData->clrEnd[3] = ArgbEncode(255, 243, 241, 236);
     m_pColorData->clrSign[0] = ArgbEncode(255, 77, 97, 133);
     m_pColorData->clrSign[1] = ArgbEncode(255, 77, 97, 133);
     m_pColorData->clrSign[2] = ArgbEncode(255, 77, 97, 133);
     m_pColorData->clrSign[3] = ArgbEncode(255, 128, 128, 128);
   }
 }