Use smart pointers for class owned pointers in xfa/fxbarcode

xfa/fxbarcode/pdf417/BC_PDF417.h

 // 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
 
 #ifndef XFA_FXBARCODE_PDF417_BC_PDF417_H_
 #define XFA_FXBARCODE_PDF417_BC_PDF417_H_
 
+#include <memory>
+
 #include "core/fxcrt/include/fx_basic.h"
 #include "xfa/fxbarcode/pdf417/BC_PDF417Compaction.h"
 
 class CBC_BarcodeRow;
 class CBC_BarcodeMatrix;
 
 class CBC_PDF417 {
  public:
   CBC_PDF417();
-  CBC_PDF417(FX_BOOL compact);
+  explicit CBC_PDF417(FX_BOOL compact);
   virtual ~CBC_PDF417();
 
   CBC_BarcodeMatrix* getBarcodeMatrix();
   void generateBarcodeLogic(CFX_WideString msg,
                             int32_t errorCorrectionLevel,
                             int32_t& e);
   void setDimensions(int32_t maxCols,
                      int32_t minCols,
                      int32_t maxRows,
                      int32_t minRows);
   void setCompaction(Compaction compaction);
   void setCompact(FX_BOOL compact);
 
  private:
   static const int32_t START_PATTERN = 0x1fea8;
   static const int32_t STOP_PATTERN = 0x3fa29;
   static const int32_t CODEWORD_TABLE[][929];
-  static FX_FLOAT PREFERRED_RATIO;
-  static FX_FLOAT DEFAULT_MODULE_WIDTH;
-  static FX_FLOAT HEIGHT;
-  CBC_BarcodeMatrix* m_barcodeMatrix;
-  FX_BOOL m_compact;
-  Compaction m_compaction;
-  int32_t m_minCols;
-  int32_t m_maxCols;
-  int32_t m_maxRows;
-  int32_t m_minRows;
+  static constexpr FX_FLOAT PREFERRED_RATIO = 3.0f;
+  static constexpr FX_FLOAT DEFAULT_MODULE_WIDTH = 0.357f;
+  static constexpr FX_FLOAT HEIGHT = 2.0f;
 
- private:
   static int32_t calculateNumberOfRows(int32_t m, int32_t k, int32_t c);
   static int32_t getNumberOfPadCodewords(int32_t m,
                                          int32_t k,
                                          int32_t c,
                                          int32_t r);
   static void encodeChar(int32_t pattern, int32_t len, CBC_BarcodeRow* logic);
   void encodeLowLevel(CFX_WideString fullCodewords,
                       int32_t c,
                       int32_t r,
                       int32_t errorCorrectionLevel,
                       CBC_BarcodeMatrix* logic);
   CFX_Int32Array* determineDimensions(int32_t sourceCodeWords,
                                       int32_t errorCorrectionCodeWords,
                                       int32_t& e);
+
+  std::unique_ptr<CBC_BarcodeMatrix> m_barcodeMatrix;
+  FX_BOOL m_compact;
+  Compaction m_compaction;
+  int32_t m_minCols;
+  int32_t m_maxCols;
+  int32_t m_maxRows;
+  int32_t m_minRows;
 };
 
 #endif  // XFA_FXBARCODE_PDF417_BC_PDF417_H_