intl/lwbrk/nsComplexBreaker.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5 #ifndef nsComplexBreaker_h__
   6 #define nsComplexBreaker_h__
   7
   8 #include <stdint.h>
   9 /**
  10  * Find line break opportunities in aText[] of aLength characters,
  11  * filling boolean values indicating line break opportunities for
  12  * corresponding charactersin aBreakBefore[] on return.
  13  */
  14 void NS_GetComplexLineBreaks(const char16_t* aText, uint32_t aLength,
  15                              uint8_t* aBreakBefore);
  16
  17 class ComplexBreaker {
  18  public:
  19   static void Initialize();
  20
  21   static void Shutdown();
  22
  23   /**
  24    * A wrapper around the platform specific NS_GetComplexLineBreaks, which adds
  25    * caching of the results to mitigate sometimes expensive implementation.
  26    * @param aText - pointer to the text to process for possible line breaks
  27    * @param aLength - the length to process
  28    * @param aBreakBefore - result array correlated to aText, where element is
  29    *                       set to true if line can be broken before
  30    *                       corresponding character in aText and false otherwise
  31    */
  32   static void GetBreaks(const char16_t* aText, uint32_t aLength,
  33                         uint8_t* aBreakBefore);
  34 };
  35
  36 #endif /* nsComplexBreaker_h__ */