text: /****************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the QtGui module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL21$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
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  ** information use the contact form at http://www.qt.io/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU Lesser
  ** General Public License version 2.1 or version 3 as published by the Free
  ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
  ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
  ** following information to ensure the GNU Lesser General Public License
  ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
  ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** As a special exception, The Qt Company gives you certain additional
  ** rights. These rights are described in The Qt Company LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #include <QtCore/qglobal.h>
  #include <QtCore/qpoint.h>
  #include <QtCore/qstring.h>
  #include <QtGui/qpolygon.h>
  #include <QtCore/qstringbuilder.h>
  
  #ifndef QHEXSTRING_P_H
  #define QHEXSTRING_P_H
  
  //
  //  W A R N I N G
  //  -------------
  //
  // This file is not part of the Qt API.  It exists purely as an
  // implementation detail.  This header file may change from version to
  // version without notice, or even be removed.
  //
  // We mean it.
  //
  
  QT_BEGIN_NAMESPACE
  
  // internal helper. Converts an integer value to an unique string token
  template <typename T>
          struct HexString
  {
      inline HexString(const T t)
          : val(t)
      {}
  
      inline void write(QChar *&dest) const
      {
          const ushort hexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
          const char *c = reinterpret_cast<const char *>(&val);
          for (uint i = 0; i < sizeof(T); ++i) {
              *dest++ = hexChars[*c & 0xf];
              *dest++ = hexChars[(*c & 0xf0) >> 4];
              ++c;
          }
      }
      const T val;
  };
  
  // specialization to enable fast concatenating of our string tokens to a string
  template <typename T>
          struct QConcatenable<HexString<T> >
  {
      typedef HexString<T> type;
      enum { ExactSize = true };
      static int size(const HexString<T> &) { return sizeof(T) * 2; }
      static inline void appendTo(const HexString<T> &str, QChar *&out) { str.write(out); }
      typedef QString ConvertTo;
  };
  
  QT_END_NAMESPACE
  
  #endif // QHEXSTRING_P_H
  