dali/internal/text/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/common/dali-vector.h>
  23 #include <dali/public-api/object/base-object.h>
  24
  25 // INTERNAL INCLUDES
  26 #include <dali/devel-api/text-abstraction/bidirectional-support.h>
  27
  28 namespace Dali
  29 {
  30
  31 namespace TextAbstraction
  32 {
  33
  34 namespace Internal
  35 {
  36
  37 /**
  38  * Implementation of the BidirectionalSupport
  39  */
  40 class BidirectionalSupport : public BaseObject
  41 {
  42 public:
  43
  44   /**
  45    * Constructor
  46    */
  47   BidirectionalSupport();
  48
  49   /**
  50    * Destructor
  51    */
  52   ~BidirectionalSupport();
  53
  54   /**
  55    * @copydoc Dali::BidirectionalSupport::Get()
  56    */
  57   static TextAbstraction::BidirectionalSupport Get();
  58
  59   /**
  60    * @copydoc Dali::BidirectionalSupport::CreateInfo()
  61    */
  62   BidiInfoIndex CreateInfo( const Character* const paragraph,
  63                             Length numberOfCharacters );
  64
  65   /**
  66    * @copydoc Dali::BidirectionalSupport::DestroyInfo()
  67    */
  68   void DestroyInfo( BidiInfoIndex bidiInfoIndex );
  69
  70   /**
  71    * @copydoc Dali::BidirectionalSupport::Reorder()
  72    */
  73   void Reorder( BidiInfoIndex bidiInfoIndex,
  74                 CharacterIndex firstCharacterIndex,
  75                 Length numberOfCharacters,
  76                 CharacterIndex* visualToLogicalMap );
  77
  78   /**
  79    * @copydoc Dali::BidirectionalSupport::GetMirroredText()
  80    */
  81   bool GetMirroredText( Character* text,
  82                         CharacterDirection* directions,
  83                         Length numberOfCharacters );
  84
  85   /**
  86    * @copydoc Dali::BidirectionalSupport::GetParagraphDirection()
  87    */
  88   bool GetParagraphDirection( BidiInfoIndex bidiInfoIndex ) const;
  89
  90   /**
  91    * @copydoc Dali::BidirectionalSupport::GetCharactersDirection()
  92    */
  93   void GetCharactersDirection( BidiInfoIndex bidiInfoIndex,
  94                                CharacterDirection* directions,
  95                                Length numberOfCharacters );
  96
  97 private:
  98
  99   /**
 100    * Helper for lazy initialization.
 101    */
 102   void CreatePlugin();
 103
 104 private:
 105
 106   // Undefined copy constructor.
 107   BidirectionalSupport( const BidirectionalSupport& );
 108
 109   // Undefined assignment constructor.
 110   BidirectionalSupport& operator=( const BidirectionalSupport& );
 111
 112 private:
 113
 114   struct Plugin;
 115   Plugin* mPlugin;
 116
 117 }; // class BidirectionalSupport
 118
 119 } // namespace Internal
 120
 121 } // namespace TextAbstraction
 122
 123 inline static TextAbstraction::Internal::BidirectionalSupport& GetImplementation( TextAbstraction::BidirectionalSupport& bidirectionalSupport )
 124 {
 125   DALI_ASSERT_ALWAYS( bidirectionalSupport && "bidirectional support handle is empty" );
 126   BaseObject& handle = bidirectionalSupport.GetBaseObject();
 127   return static_cast<TextAbstraction::Internal::BidirectionalSupport&>(handle);
 128 }
 129
 130 inline static const TextAbstraction::Internal::BidirectionalSupport& GetImplementation( const TextAbstraction::BidirectionalSupport& bidirectionalSupport )
 131 {
 132   DALI_ASSERT_ALWAYS( bidirectionalSupport && "bidirectional support handle is empty" );
 133   const BaseObject& handle = bidirectionalSupport.GetBaseObject();
 134   return static_cast<const TextAbstraction::Internal::BidirectionalSupport&>(handle);
 135 }
 136
 137 } // namespace Dali
 138
 139 #endif // __DALI_INTERNAL_TEXT_ABSTRACTION_BIDIRECTIONAL_SUPPORT_IMPL_H__