Use smart pointers for class owned pointers in xfa/fxbarcode

xfa/fxbarcode/BC_TwoDimWriter.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 <algorithm>
 
 #include "core/fxge/include/cfx_pathdata.h"
 #include "core/fxge/include/fx_ge.h"
 #include "third_party/base/numerics/safe_math.h"
 #include "xfa/fxbarcode/BC_TwoDimWriter.h"
 #include "xfa/fxbarcode/BC_Writer.h"
 #include "xfa/fxbarcode/common/BC_CommonBitMatrix.h"
 
-CBC_TwoDimWriter::CBC_TwoDimWriter() {
-  m_iCorrectLevel = 1;
-  m_bFixedSize = TRUE;
-  m_output = nullptr;
-}
-CBC_TwoDimWriter::~CBC_TwoDimWriter() {
-  delete m_output;
-}
+CBC_TwoDimWriter::CBC_TwoDimWriter() : m_iCorrectLevel(1), m_bFixedSize(TRUE) {}
+
+CBC_TwoDimWriter::~CBC_TwoDimWriter() {}
+
 void CBC_TwoDimWriter::RenderDeviceResult(CFX_RenderDevice* device,
                                           const CFX_Matrix* matrix) {
   CFX_GraphStateData stateData;
   CFX_PathData path;
   path.AppendRect(0, 0, (FX_FLOAT)m_Width, (FX_FLOAT)m_Height);
   device->DrawPath(&path, matrix, &stateData, m_backgroundColor,
                    m_backgroundColor, FXFILL_ALTERNATE);
   int32_t leftPos = 0;
   int32_t topPos = 0;
   if (m_bFixedSize) {
@@ skipping 14 matching lines @@
       rect.AppendRect((FX_FLOAT)leftPos + x, (FX_FLOAT)topPos + y,
                       (FX_FLOAT)(leftPos + x + 1), (FX_FLOAT)(topPos + y + 1));
       if (m_output->Get(x, y)) {
         CFX_GraphStateData data;
         device->DrawPath(&rect, &matri, &data, m_barColor, 0, FXFILL_WINDING);
       }
     }
   }
 }
 
-int32_t CBC_TwoDimWriter::GetErrorCorrectionLevel() {
+int32_t CBC_TwoDimWriter::GetErrorCorrectionLevel() const {
   return m_iCorrectLevel;
 }
 
 void CBC_TwoDimWriter::RenderBitmapResult(CFX_DIBitmap*& pOutBitmap,
                                           int32_t& e) {
   if (m_bFixedSize) {
     pOutBitmap = CreateDIBitmap(m_Width, m_Height);
   } else {
     pOutBitmap = CreateDIBitmap(m_output->GetWidth(), m_output->GetHeight());
   }
@@ skipping 60 matching lines @@
     multiY = multiX;
   }
   int32_t leftPadding = (outputWidth - (inputWidth * multiX)) / 2;
   int32_t topPadding = (outputHeight - (inputHeight * multiY)) / 2;
   if (leftPadding < 0) {
     leftPadding = 0;
   }
   if (topPadding < 0) {
     topPadding = 0;
   }
-  m_output = new CBC_CommonBitMatrix;
+  m_output.reset(new CBC_CommonBitMatrix);
   m_output->Init(outputWidth, outputHeight);
   for (int32_t inputY = 0, outputY = topPadding;
        (inputY < inputHeight) && (outputY < outputHeight - multiY);
        inputY++, outputY += multiY) {
     for (int32_t inputX = 0, outputX = leftPadding;
          (inputX < inputWidth) && (outputX < outputWidth - multiX);
          inputX++, outputX += multiX) {
       if (code[inputX + inputY * inputWidth] == 1) {
         m_output->SetRegion(outputX, outputY, multiX, multiY, e);
         BC_EXCEPTION_CHECK_ReturnVoid(e);
       }
     }
   }
 }