text/dali/internal/text-abstraction/bidirectional-support-impl.h

   1 #ifndef __DALI_INTERNAL_TEXT_ABSTRACTION_BIDIRECTIONAL_SUPPORT_IMPL_H__
   2 #define __DALI_INTERNAL_TEXT_ABSTRACTION_BIDIRECTIONAL_SUPPORT_IMPL_H__
   3
   4 /*
   5  * Copyright (c) 2015 Samsung Electronics Co., Ltd.
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  * http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  */
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/public-api/object/base-object.h>
  23
  24 // INTERNAL INCLUDES
  25 #include <dali/public-api/text-abstraction/bidirectional-support.h>
  26
  27 namespace Dali
  28 {
  29
  30 namespace TextAbstraction
  31 {
  32
  33 namespace Internal
  34 {
  35
  36 /**
  37  * Implementation of the BidirectionalSupport
  38  */
  39 class BidirectionalSupport : public Dali::BaseObject
  40 {
  41 public:
  42
  43   /**
  44    * Constructor
  45    */
  46   BidirectionalSupport();
  47
  48   /**
  49    * Destructor
  50    */
  51   ~BidirectionalSupport();
  52
  53   /**
  54    * @copydoc Dali::BidirectionalSupport::Get()
  55    */
  56   static TextAbstraction::BidirectionalSupport Get();
  57
  58   /**
  59    * @copydoc Dali::BidirectionalSupport::CreateInfo()
  60    */
  61   BidiInfoIndex CreateInfo( const Character* const paragraph,
  62                             Length numberOfCharacters );
  63
  64   /**
  65    * @copydoc Dali::BidirectionalSupport::DestroyInfo()
  66    */
  67   void DestroyInfo( BidiInfoIndex bidiInfoIndex );
  68
  69   /**
  70    * @copydoc Dali::BidirectionalSupport::Reorder()
  71    */
  72   void Reorder( BidiInfoIndex bidiInfoIndex,
  73                 CharacterIndex firstCharacterIndex,
  74                 Length numberOfCharacters,
  75                 CharacterIndex* visualToLogicalMap );
  76
  77 private:
  78
  79   // Undefined copy constructor.
  80   BidirectionalSupport( const BidirectionalSupport& );
  81
  82   // Undefined assignment constructor.
  83   BidirectionalSupport& operator=( BidirectionalSupport& );
  84
  85   void* mPlugin; ///< TODO replace this with bidirectional support plugin
  86
  87 private:
  88
  89   /**
  90    * Stores bidirectional info per paragraph.
  91    */
  92   struct BidirectionalInfo;
  93
  94   Vector<BidirectionalInfo*> mParagraphBidirectionalInfo; ///< Stores the bidirectional info per paragraph.
  95   Vector<BidiInfoIndex>      mFreeIndices;                ///< Stores indices of free positions in the bidirectional info vector.
  96
  97 }; // class BidirectionalSupport
  98
  99 } // namespace Internal
 100
 101 } // namespace TextAbstraction
 102
 103 inline static TextAbstraction::Internal::BidirectionalSupport& GetImplementation( TextAbstraction::BidirectionalSupport& bidirectionalSupport )
 104 {
 105   DALI_ASSERT_ALWAYS( bidirectionalSupport && "bidirectional support handle is empty" );
 106   BaseObject& handle = bidirectionalSupport.GetBaseObject();
 107   return static_cast<TextAbstraction::Internal::BidirectionalSupport&>(handle);
 108 }
 109
 110 inline static const TextAbstraction::Internal::BidirectionalSupport& GetImplementation( const TextAbstraction::BidirectionalSupport& bidirectionalSupport )
 111 {
 112   DALI_ASSERT_ALWAYS( bidirectionalSupport && "bidirectional support handle is empty" );
 113   const BaseObject& handle = bidirectionalSupport.GetBaseObject();
 114   return static_cast<const TextAbstraction::Internal::BidirectionalSupport&>(handle);
 115 }
 116
 117 } // namespace Dali
 118
 119 #endif // __DALI_INTERNAL_TEXT_ABSTRACTION_BIDIRECTIONAL_SUPPORT_IMPL_H__