Get rid of NULLs in core/

core/fxge/ge/fx_ge_text.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 <limits>
 #include <vector>
 
 #include "core/fxcodec/include/fx_codec.h"
@@ skipping 341 matching lines @@
 void Color2Argb(FX_ARGB& argb,
                 uint32_t color,
                 int alpha_flag,
                 void* pIccTransform) {
   if (!pIccTransform && !FXGETFLAG_COLORTYPE(alpha_flag)) {
     argb = color;
     return;
   }
   if (!CFX_GEModule::Get()->GetCodecModule() ||
       !CFX_GEModule::Get()->GetCodecModule()->GetIccModule()) {
-    pIccTransform = NULL;
+    pIccTransform = nullptr;
   }
   uint8_t bgra[4];
   if (pIccTransform) {
     CCodec_IccModule* pIccModule =
         CFX_GEModule::Get()->GetCodecModule()->GetIccModule();
     color = FXGETFLAG_COLORTYPE(alpha_flag) ? FXCMYK_TODIB(color)
                                             : FXARGB_TODIB(color);
     pIccModule->TranslateScanline(pIccTransform, bgra, (const uint8_t*)&color,
                                   1);
     bgra[3] = FXGETFLAG_COLORTYPE(alpha_flag)
@@ skipping 467 matching lines @@
   return pGlyphBitmap;
 }
 const CFX_GlyphBitmap* CFX_FaceCache::LoadGlyphBitmap(CFX_Font* pFont,
                                                       uint32_t glyph_index,
                                                       FX_BOOL bFontStyle,
                                                       const CFX_Matrix* pMatrix,
                                                       int dest_width,
                                                       int anti_alias,
                                                       int& text_flags) {
   if (glyph_index == (uint32_t)-1) {
-    return NULL;
+    return nullptr;
   }
   _CFX_UniqueKeyGen keygen;
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
   if (pFont->GetSubstFont())
     keygen.Generate(9, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000),
                     (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000),
                     dest_width, anti_alias, pFont->GetSubstFont()->m_Weight,
                     pFont->GetSubstFont()->m_ItalicAngle, pFont->IsVertical());
   else
     keygen.Generate(6, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000),
@@ skipping 73 matching lines @@
 #endif
 }
 CFX_SizeGlyphCache::~CFX_SizeGlyphCache() {
   for (const auto& pair : m_GlyphMap) {
     delete pair.second;
   }
   m_GlyphMap.clear();
 }
 #define CONTRAST_RAMP_STEP 1
 void CFX_Font::AdjustMMParams(int glyph_index, int dest_width, int weight) {
-  FXFT_MM_Var pMasters = NULL;
+  FXFT_MM_Var pMasters = nullptr;
   FXFT_Get_MM_Var(m_Face, &pMasters);
   if (!pMasters) {
     return;
   }
   long coords[2];
   if (weight == 0) {
     coords[0] = FXFT_Get_MM_Axis_Def(FXFT_Get_MM_Axis(pMasters, 0)) / 65536;
   } else {
     coords[0] = weight;
   }
@@ skipping 115 matching lines @@
     }
   }
 }
 CFX_GlyphBitmap* CFX_FaceCache::RenderGlyph(CFX_Font* pFont,
                                             uint32_t glyph_index,
                                             FX_BOOL bFontStyle,
                                             const CFX_Matrix* pMatrix,
                                             int dest_width,
                                             int anti_alias) {
   if (!m_Face) {
-    return NULL;
+    return nullptr;
   }
   FXFT_Matrix ft_matrix;
   ft_matrix.xx = (signed long)(pMatrix->GetA() / 64 * 65536);
   ft_matrix.xy = (signed long)(pMatrix->GetC() / 64 * 65536);
   ft_matrix.yx = (signed long)(pMatrix->GetB() / 64 * 65536);
   ft_matrix.yy = (signed long)(pMatrix->GetD() / 64 * 65536);
   FX_BOOL bUseCJKSubFont = FALSE;
   const CFX_SubstFont* pSubstFont = pFont->GetSubstFont();
   if (pSubstFont) {
     bUseCJKSubFont = pSubstFont->m_bSubstOfCJK && bFontStyle;
@@ skipping 23 matching lines @@
     }
   }
   ScopedFontTransform scoped_transform(m_Face, &ft_matrix);
   int load_flags = (m_Face->face_flags & FT_FACE_FLAG_SFNT)
                        ? FXFT_LOAD_NO_BITMAP
                        : (FXFT_LOAD_NO_BITMAP | FT_LOAD_NO_HINTING);
   int error = FXFT_Load_Glyph(m_Face, glyph_index, load_flags);
   if (error) {
     // if an error is returned, try to reload glyphs without hinting.
     if (load_flags & FT_LOAD_NO_HINTING || load_flags & FT_LOAD_NO_SCALE) {
-      return NULL;
+      return nullptr;
     }
 
     load_flags |= FT_LOAD_NO_HINTING;
     error = FXFT_Load_Glyph(m_Face, glyph_index, load_flags);
 
     if (error) {
-      return NULL;
+      return nullptr;
     }
   }
   int weight = 0;
   if (bUseCJKSubFont) {
     weight = pSubstFont->m_WeightCJK;
   } else {
     weight = pSubstFont ? pSubstFont->m_Weight : 0;
   }
   if (pSubstFont && !(pSubstFont->m_SubstFlags & FXFONT_SUBST_MM) &&
       weight > 400) {
     uint32_t index = (weight - 400) / 10;
     if (index >= WEIGHTPOW_ARRAY_SIZE)
-      return NULL;
+      return nullptr;
     int level = 0;
     if (pSubstFont->m_Charset == FXFONT_SHIFTJIS_CHARSET) {
       level =
           g_WeightPow_SHIFTJIS[index] * 2 *
           (FXSYS_abs((int)(ft_matrix.xx)) + FXSYS_abs((int)(ft_matrix.xy))) /
           36655;
     } else {
       level = g_WeightPow_11[index] * (FXSYS_abs((int)(ft_matrix.xx)) +
                                        FXSYS_abs((int)(ft_matrix.xy))) /
               36655;
     }
     FXFT_Outline_Embolden(FXFT_Get_Glyph_Outline(m_Face), level);
   }
   FXFT_Library_SetLcdFilter(CFX_GEModule::Get()->GetFontMgr()->GetFTLibrary(),
                             FT_LCD_FILTER_DEFAULT);
   error = FXFT_Render_Glyph(m_Face, anti_alias);
   if (error) {
-    return NULL;
+    return nullptr;
   }
   int bmwidth = FXFT_Get_Bitmap_Width(FXFT_Get_Glyph_Bitmap(m_Face));
   int bmheight = FXFT_Get_Bitmap_Rows(FXFT_Get_Glyph_Bitmap(m_Face));
   if (bmwidth > 2048 || bmheight > 2048) {
-    return NULL;
+    return nullptr;
   }
   int dib_width = bmwidth;
   CFX_GlyphBitmap* pGlyphBitmap = new CFX_GlyphBitmap;
   pGlyphBitmap->m_Bitmap.Create(
       dib_width, bmheight,
       anti_alias == FXFT_RENDER_MODE_MONO ? FXDIB_1bppMask : FXDIB_8bppMask);
   pGlyphBitmap->m_Left = FXFT_Get_Glyph_BitmapLeft(m_Face);
   pGlyphBitmap->m_Top = FXFT_Get_Glyph_BitmapTop(m_Face);
   int dest_pitch = pGlyphBitmap->m_Bitmap.GetPitch();
   int src_pitch = FXFT_Get_Bitmap_Pitch(FXFT_Get_Glyph_Bitmap(m_Face));
@@ skipping 173 matching lines @@
     param->m_pPoints[param->m_PointCount + 2].m_Flag = FXPT_BEZIERTO;
     param->m_CurX = to->x;
     param->m_CurY = to->y;
   }
   param->m_PointCount += 3;
   return 0;
 }
 };
 CFX_PathData* CFX_Font::LoadGlyphPath(uint32_t glyph_index, int dest_width) {
   if (!m_Face) {
-    return NULL;
+    return nullptr;
   }
   FXFT_Set_Pixel_Sizes(m_Face, 0, 64);
   FXFT_Matrix ft_matrix = {65536, 0, 0, 65536};
   if (m_pSubstFont) {
     if (m_pSubstFont->m_ItalicAngle) {
       int skew = m_pSubstFont->m_ItalicAngle;
       // |skew| is nonpositive so |-skew| is used as the index. We need to make
       // sure |skew| != INT_MIN since -INT_MIN is undefined.
       if (skew <= 0 && skew != std::numeric_limits<int>::min() &&
           static_cast<size_t>(-skew) < ANGLESKEW_ARRAY_SIZE) {
         skew = -g_AngleSkew[-skew];
       } else {
         skew = -58;
       }
       if (m_bVertical)
         ft_matrix.yx += ft_matrix.yy * skew / 100;
       else
         ft_matrix.xy -= ft_matrix.xx * skew / 100;
     }
     if (m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM) {
       AdjustMMParams(glyph_index, dest_width, m_pSubstFont->m_Weight);
     }
   }
   ScopedFontTransform scoped_transform(m_Face, &ft_matrix);
   int load_flags = FXFT_LOAD_NO_BITMAP;
   if (!(m_Face->face_flags & FT_FACE_FLAG_SFNT) || !FT_IS_TRICKY(m_Face)) {
     load_flags |= FT_LOAD_NO_HINTING;
   }
   if (FXFT_Load_Glyph(m_Face, glyph_index, load_flags))
-    return NULL;
+    return nullptr;
   if (m_pSubstFont && !(m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM) &&
       m_pSubstFont->m_Weight > 400) {
     uint32_t index = (m_pSubstFont->m_Weight - 400) / 10;
     if (index >= WEIGHTPOW_ARRAY_SIZE)
       index = WEIGHTPOW_ARRAY_SIZE - 1;
     int level = 0;
     if (m_pSubstFont->m_Charset == FXFONT_SHIFTJIS_CHARSET)
       level = g_WeightPow_SHIFTJIS[index] * 2 * 65536 / 36655;
     else
       level = g_WeightPow[index] * 2;
     FXFT_Outline_Embolden(FXFT_Get_Glyph_Outline(m_Face), level);
   }
   FXFT_Outline_Funcs funcs;
   funcs.move_to = _Outline_MoveTo;
   funcs.line_to = _Outline_LineTo;
   funcs.conic_to = _Outline_ConicTo;
   funcs.cubic_to = _Outline_CubicTo;
   funcs.shift = 0;
   funcs.delta = 0;
   OUTLINE_PARAMS params;
   params.m_bCount = TRUE;
   params.m_PointCount = 0;
   FXFT_Outline_Decompose(FXFT_Get_Glyph_Outline(m_Face), &funcs, &params);
   if (params.m_PointCount == 0) {
-    return NULL;
+    return nullptr;
   }
   CFX_PathData* pPath = new CFX_PathData;
   pPath->SetPointCount(params.m_PointCount);
   params.m_bCount = FALSE;
   params.m_PointCount = 0;
   params.m_pPoints = pPath->GetPoints();
   params.m_CurX = params.m_CurY = 0;
   params.m_CoordUnit = 64 * 64.0;
   FXFT_Outline_Decompose(FXFT_Get_Glyph_Outline(m_Face), &funcs, &params);
   _Outline_CheckEmptyContour(&params);
   pPath->TrimPoints(params.m_PointCount);
   if (params.m_PointCount) {
     pPath->GetPoints()[params.m_PointCount - 1].m_Flag |= FXPT_CLOSEFIGURE;
   }
   return pPath;
 }
 void _CFX_UniqueKeyGen::Generate(int count, ...) {
   va_list argList;
   va_start(argList, count);
   for (int i = 0; i < count; i++) {
     int p = va_arg(argList, int);
     ((uint32_t*)m_Key)[i] = p;
   }
   va_end(argList);
   m_KeyLen = count * sizeof(uint32_t);
 }