Get rid of NULLs in core/

core/fpdfapi/fpdf_render/fpdf_render_image.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 "core/fpdfapi/fpdf_render/render_int.h"
 
 #include <utility>
 #include <vector>
@@ skipping 13 matching lines @@
 #include "core/fpdfapi/fpdf_render/include/cpdf_renderoptions.h"
 #include "core/fpdfdoc/include/fpdf_doc.h"
 #include "core/fxcodec/include/fx_codec.h"
 #include "core/fxcrt/include/fx_safe_types.h"
 #include "core/fxge/include/fx_ge.h"
 
 FX_BOOL CPDF_RenderStatus::ProcessImage(const CPDF_ImageObject* pImageObj,
                                         const CFX_Matrix* pObj2Device) {
   CPDF_ImageRenderer render;
   if (render.Start(this, pImageObj, pObj2Device, m_bStdCS, m_curBlend)) {
-    render.Continue(NULL);
+    render.Continue(nullptr);
   }
   return render.m_Result;
 }
 void CPDF_RenderStatus::CompositeDIBitmap(CFX_DIBitmap* pDIBitmap,
                                           int left,
                                           int top,
                                           FX_ARGB mask_argb,
                                           int bitmap_alpha,
                                           int blend_mode,
                                           int Transparency) {
@@ skipping 37 matching lines @@
   if (bGetBackGround) {
     if (bIsolated || !bGroup) {
       if (pDIBitmap->IsAlphaMask()) {
         return;
       }
       m_pDevice->SetDIBitsWithBlend(pDIBitmap, left, top, blend_mode);
     } else {
       FX_RECT rect(left, top, left + pDIBitmap->GetWidth(),
                    top + pDIBitmap->GetHeight());
       rect.Intersect(m_pDevice->GetClipBox());
-      CFX_DIBitmap* pClone = NULL;
+      CFX_DIBitmap* pClone = nullptr;
       FX_BOOL bClone = FALSE;
       if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) {
         bClone = TRUE;
         pClone = m_pDevice->GetBackDrop()->Clone(&rect);
         CFX_DIBitmap* pForeBitmap = m_pDevice->GetBitmap();
         pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(),
                                 pForeBitmap, rect.left, rect.top);
         left = left >= 0 ? 0 : left;
         top = top >= 0 ? 0 : top;
         if (!pDIBitmap->IsAlphaMask())
@@ skipping 205 matching lines @@
         *dest_buf++ = m_RampG[*(src_buf++)];
         *dest_buf++ = m_RampR[*(src_buf++)];
         *dest_buf++ = *(src_buf++);
       }
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
     }
 #endif
   }
 }
 CPDF_ImageRenderer::CPDF_ImageRenderer() {
-  m_pRenderStatus = NULL;
-  m_pImageObject = NULL;
+  m_pRenderStatus = nullptr;
+  m_pImageObject = nullptr;
   m_Result = TRUE;
   m_Status = 0;
-  m_pTransformer = NULL;
-  m_DeviceHandle = NULL;
-  m_LoadHandle = NULL;
-  m_pClone = NULL;
+  m_pTransformer = nullptr;
+  m_DeviceHandle = nullptr;
+  m_LoadHandle = nullptr;
+  m_pClone = nullptr;
   m_bStdCS = FALSE;
   m_bPatternColor = FALSE;
   m_BlendType = FXDIB_BLEND_NORMAL;
-  m_pPattern = NULL;
-  m_pObj2Device = NULL;
+  m_pPattern = nullptr;
+  m_pObj2Device = nullptr;
 }
 CPDF_ImageRenderer::~CPDF_ImageRenderer() {
   delete m_pTransformer;
   if (m_DeviceHandle) {
     m_pRenderStatus->m_pDevice->CancelDIBits(m_DeviceHandle);
   }
   delete m_LoadHandle;
   delete m_pClone;
 }
 FX_BOOL CPDF_ImageRenderer::StartLoadDIBSource() {
@@ skipping 44 matching lines @@
           pGeneralState->m_pTransferFunc->TranslateImage(m_Loader.m_pBitmap,
                                                          !m_Loader.m_bCached);
       if (m_Loader.m_bCached && m_Loader.m_pMask) {
         m_Loader.m_pMask = m_Loader.m_pMask->Clone();
       }
       m_Loader.m_bCached = FALSE;
     }
   }
   m_FillArgb = 0;
   m_bPatternColor = FALSE;
-  m_pPattern = NULL;
+  m_pPattern = nullptr;
   if (m_pDIBSource->IsAlphaMask()) {
     CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor();
     if (pColor && pColor->IsPattern()) {
       m_pPattern = pColor->GetPattern();
       if (m_pPattern) {
         m_bPatternColor = TRUE;
       }
     }
     m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject);
   } else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) {
@@ skipping 37 matching lines @@
   if (m_Loader.m_pMask) {
     return DrawMaskedImage();
   }
   if (m_bPatternColor) {
     return DrawPatternImage(m_pObj2Device);
   }
   if (m_BitmapAlpha == 255 && pGeneralState && pGeneralState->m_FillOP &&
       pGeneralState->m_OPMode == 0 &&
       pGeneralState->m_BlendType == FXDIB_BLEND_NORMAL &&
       pGeneralState->m_StrokeAlpha == 1 && pGeneralState->m_FillAlpha == 1) {
-    CPDF_Document* pDocument = NULL;
-    CPDF_Page* pPage = NULL;
+    CPDF_Document* pDocument = nullptr;
+    CPDF_Page* pPage = nullptr;
     if (m_pRenderStatus->m_pContext->GetPageCache()) {
       pPage = m_pRenderStatus->m_pContext->GetPageCache()->GetPage();
       pDocument = pPage->m_pDocument;
     } else {
       pDocument = m_pImageObject->m_pImage->GetDocument();
     }
-    CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL;
+    CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
     CPDF_Object* pCSObj =
         m_pImageObject->m_pImage->GetStream()->GetDict()->GetDirectObjectBy(
             "ColorSpace");
     CPDF_ColorSpace* pColorSpace =
         pDocument->LoadColorSpace(pCSObj, pPageResources);
     if (pColorSpace) {
       int format = pColorSpace->GetFamily();
       if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
           format == PDFCS_DEVICEN) {
         m_BlendType = FXDIB_BLEND_DARKEN;
@@ skipping 58 matching lines @@
   new_matrix.TranslateI(-rect.left, -rect.top);
   int width = rect.Width();
   int height = rect.Height();
   CFX_FxgeDevice bitmap_device1;
   if (!bitmap_device1.Create(rect.Width(), rect.Height(), FXDIB_Rgb32, nullptr))
     return TRUE;
 
   bitmap_device1.GetBitmap()->Clear(0xffffff);
   {
     CPDF_RenderStatus bitmap_render;
-    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1, NULL,
-                             NULL, NULL, NULL, &m_pRenderStatus->m_Options, 0,
-                             m_pRenderStatus->m_bDropObjects, NULL, TRUE);
+    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1,
+                             nullptr, nullptr, nullptr, nullptr,
+                             &m_pRenderStatus->m_Options, 0,
+                             m_pRenderStatus->m_bDropObjects, nullptr, TRUE);
     CFX_Matrix patternDevice = *pObj2Device;
     patternDevice.Translate((FX_FLOAT)-rect.left, (FX_FLOAT)-rect.top);
     if (CPDF_TilingPattern* pTilingPattern = m_pPattern->AsTilingPattern()) {
       bitmap_render.DrawTilingPattern(pTilingPattern, m_pImageObject,
                                       &patternDevice, FALSE);
     } else if (CPDF_ShadingPattern* pShadingPattern =
                    m_pPattern->AsShadingPattern()) {
       bitmap_render.DrawShadingPattern(pShadingPattern, m_pImageObject,
                                        &patternDevice, FALSE);
     }
   }
   {
     CFX_FxgeDevice bitmap_device2;
     if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb,
                                nullptr)) {
       return TRUE;
     }
     bitmap_device2.GetBitmap()->Clear(0);
     CPDF_RenderStatus bitmap_render;
-    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2, NULL,
-                             NULL, NULL, NULL, NULL, 0,
-                             m_pRenderStatus->m_bDropObjects, NULL, TRUE);
+    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2,
+                             nullptr, nullptr, nullptr, nullptr, nullptr, 0,
+                             m_pRenderStatus->m_bDropObjects, nullptr, TRUE);
     CPDF_ImageRenderer image_render;
     if (image_render.Start(&bitmap_render, m_pDIBSource, 0xffffffff, 255,
                            &new_matrix, m_Flags, TRUE)) {
-      image_render.Continue(NULL);
+      image_render.Continue(nullptr);
     }
     if (m_Loader.m_MatteColor != 0xffffffff) {
       int matte_r = FXARGB_R(m_Loader.m_MatteColor);
       int matte_g = FXARGB_G(m_Loader.m_MatteColor);
       int matte_b = FXARGB_B(m_Loader.m_MatteColor);
       for (int row = 0; row < height; row++) {
         uint8_t* dest_scan =
             (uint8_t*)bitmap_device1.GetBitmap()->GetScanline(row);
         const uint8_t* mask_scan = bitmap_device2.GetBitmap()->GetScanline(row);
         for (int col = 0; col < width; col++) {
@@ skipping 50 matching lines @@
   new_matrix.TranslateI(-rect.left, -rect.top);
   int width = rect.Width();
   int height = rect.Height();
   CFX_FxgeDevice bitmap_device1;
   if (!bitmap_device1.Create(width, height, FXDIB_Rgb32, nullptr))
     return TRUE;
 
   bitmap_device1.GetBitmap()->Clear(0xffffff);
   {
     CPDF_RenderStatus bitmap_render;
-    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1, NULL,
-                             NULL, NULL, NULL, NULL, 0,
-                             m_pRenderStatus->m_bDropObjects, NULL, TRUE);
+    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1,
+                             nullptr, nullptr, nullptr, nullptr, nullptr, 0,
+                             m_pRenderStatus->m_bDropObjects, nullptr, TRUE);
     CPDF_ImageRenderer image_render;
     if (image_render.Start(&bitmap_render, m_pDIBSource, 0, 255, &new_matrix,
                            m_Flags, TRUE)) {
-      image_render.Continue(NULL);
+      image_render.Continue(nullptr);
     }
   }
   {
     CFX_FxgeDevice bitmap_device2;
     if (!bitmap_device2.Create(width, height, FXDIB_8bppRgb, nullptr))
       return TRUE;
 
     bitmap_device2.GetBitmap()->Clear(0);
     CPDF_RenderStatus bitmap_render;
-    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2, NULL,
-                             NULL, NULL, NULL, NULL, 0,
-                             m_pRenderStatus->m_bDropObjects, NULL, TRUE);
+    bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2,
+                             nullptr, nullptr, nullptr, nullptr, nullptr, 0,
+                             m_pRenderStatus->m_bDropObjects, nullptr, TRUE);
     CPDF_ImageRenderer image_render;
     if (image_render.Start(&bitmap_render, m_Loader.m_pMask, 0xffffffff, 255,
                            &new_matrix, m_Flags, TRUE)) {
-      image_render.Continue(NULL);
+      image_render.Continue(nullptr);
     }
     if (m_Loader.m_MatteColor != 0xffffffff) {
       int matte_r = FXARGB_R(m_Loader.m_MatteColor);
       int matte_g = FXARGB_G(m_Loader.m_MatteColor);
       int matte_b = FXARGB_B(m_Loader.m_MatteColor);
       for (int row = 0; row < height; row++) {
         uint8_t* dest_scan =
             (uint8_t*)bitmap_device1.GetBitmap()->GetScanline(row);
         const uint8_t* mask_scan = bitmap_device2.GetBitmap()->GetScanline(row);
         for (int col = 0; col < width; col++) {
@@ skipping 124 matching lines @@
   return FALSE;
 }
 
 FX_BOOL CPDF_ImageRenderer::StartBitmapAlpha() {
   if (m_pDIBSource->IsOpaqueImage()) {
     CFX_PathData path;
     path.AppendRect(0, 0, 1, 1);
     path.Transform(&m_ImageMatrix);
     uint32_t fill_color =
         ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha);
-    m_pRenderStatus->m_pDevice->DrawPath(&path, NULL, NULL, fill_color, 0,
+    m_pRenderStatus->m_pDevice->DrawPath(&path, nullptr, nullptr, fill_color, 0,
                                          FXFILL_WINDING);
   } else {
     const CFX_DIBSource* pAlphaMask = m_pDIBSource->IsAlphaMask()
                                           ? m_pDIBSource
                                           : m_pDIBSource->GetAlphaMask();
     if (FXSYS_fabs(m_ImageMatrix.b) >= 0.5f ||
         FXSYS_fabs(m_ImageMatrix.c) >= 0.5f) {
       int left, top;
       std::unique_ptr<CFX_DIBitmap> pTransformed(
           pAlphaMask->TransformTo(&m_ImageMatrix, left, top));
@@ skipping 98 matching lines @@
   FXDIB_Format format;
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
   format = bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask;
 #else
   format = bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask;
 #endif
   if (!bitmap_device.Create(width, height, format, nullptr))
     return nullptr;
 
   CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap();
-  CPDF_Object* pCSObj = NULL;
-  CPDF_ColorSpace* pCS = NULL;
+  CPDF_Object* pCSObj = nullptr;
+  CPDF_ColorSpace* pCS = nullptr;
   if (bLuminosity) {
     CPDF_Array* pBC = pSMaskDict->GetArrayBy("BC");
     FX_ARGB back_color = 0xff000000;
     if (pBC) {
       CPDF_Dictionary* pDict = pGroup->GetDict();
       if (pDict && pDict->GetDictBy("Group"))
         pCSObj = pDict->GetDictBy("Group")->GetDirectObjectBy("CS");
       else
-        pCSObj = NULL;
+        pCSObj = nullptr;
       pCS = m_pContext->GetDocument()->LoadColorSpace(pCSObj);
       if (pCS) {
         FX_FLOAT R, G, B;
         uint32_t comps = 8;
         if (pCS->CountComponents() > comps) {
           comps = pCS->CountComponents();
         }
         CFX_FixedBufGrow<FX_FLOAT, 8> float_array(comps);
         FX_FLOAT* pFloats = float_array;
         FX_SAFE_UINT32 num_floats = comps;
         num_floats *= sizeof(FX_FLOAT);
         if (!num_floats.IsValid()) {
-          return NULL;
+          return nullptr;
         }
         FXSYS_memset(pFloats, 0, num_floats.ValueOrDie());
         size_t count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
         for (size_t i = 0; i < count; i++) {
           pFloats[i] = pBC->GetNumberAt(i);
         }
         pCS->GetRGB(pFloats, R, G, B);
         back_color = 0xff000000 | ((int32_t)(R * 255) << 16) |
                      ((int32_t)(G * 255) << 8) | (int32_t)(B * 255);
         m_pContext->GetDocument()->GetPageData()->ReleaseColorSpace(pCSObj);
       }
     }
     bitmap.Clear(back_color);
   } else {
     bitmap.Clear(0);
   }
-  CPDF_Dictionary* pFormResource = NULL;
+  CPDF_Dictionary* pFormResource = nullptr;
   if (form.m_pFormDict) {
     pFormResource = form.m_pFormDict->GetDictBy("Resources");
   }
   CPDF_RenderOptions options;
   options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA;
   CPDF_RenderStatus status;
-  status.Initialize(m_pContext, &bitmap_device, NULL, NULL, NULL, NULL,
-                    &options, 0, m_bDropObjects, pFormResource, TRUE, NULL, 0,
-                    pCS ? pCS->GetFamily() : 0, bLuminosity);
+  status.Initialize(m_pContext, &bitmap_device, nullptr, nullptr, nullptr,
+                    nullptr, &options, 0, m_bDropObjects, pFormResource, TRUE,
+                    nullptr, 0, pCS ? pCS->GetFamily() : 0, bLuminosity);
   status.RenderObjectList(&form, &matrix);
   std::unique_ptr<CFX_DIBitmap> pMask(new CFX_DIBitmap);
   if (!pMask->Create(width, height, FXDIB_8bppMask))
     return nullptr;
 
   uint8_t* dest_buf = pMask->GetBuffer();
   int dest_pitch = pMask->GetPitch();
   uint8_t* src_buf = bitmap.GetBuffer();
   int src_pitch = bitmap.GetPitch();
   std::vector<uint8_t> transfers(256);
@@ skipping 23 matching lines @@
   } else if (pFunc) {
     int size = dest_pitch * height;
     for (int i = 0; i < size; i++) {
       dest_buf[i] = transfers[src_buf[i]];
     }
   } else {
     FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height);
   }
   return pMask.release();
 }