automated-tests/src/dali-toolkit/dali-toolkit-test-utils/toolkit-text-abstraction.cpp

   1 /*
   2  * Copyright (c) 2016 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <dali/devel-api/text-abstraction/bidirectional-support.h>
  18 #include <dali/devel-api/text-abstraction/font-client.h>
  19 #include <dali/devel-api/text-abstraction/font-metrics.h>
  20 #include <dali/devel-api/text-abstraction/glyph-info.h>
  21 #include <dali/devel-api/text-abstraction/script.h>
  22 #include <dali/devel-api/text-abstraction/segmentation.h>
  23 #include <dali/devel-api/text-abstraction/shaping.h>
  24 #include <dali/public-api/object/base-object.h>
  25 #include <dali/devel-api/adaptor-framework/singleton-service.h>
  26 #include <cstring>
  27
  28 using namespace Dali;
  29
  30 namespace Dali
  31 {
  32 class Adaptor;
  33
  34 namespace TextAbstraction
  35 {
  36 namespace Internal
  37 {
  38
  39 class BidirectionalSupport : public BaseObject
  40 {
  41 public:
  42   BidirectionalSupport()
  43   {
  44   }
  45
  46   ~BidirectionalSupport()
  47   {
  48   }
  49
  50   static TextAbstraction::BidirectionalSupport Get()
  51   {
  52     TextAbstraction::BidirectionalSupport bidirectionalSupportHandle;
  53
  54     Dali::SingletonService service( Dali::SingletonService::Get() );
  55     if( service )
  56     {
  57       // Check whether the singleton is already created
  58       BaseHandle handle = service.GetSingleton( typeid( TextAbstraction::BidirectionalSupport ) );
  59       if(handle)
  60       {
  61         // If so, downcast the handle
  62         BidirectionalSupport* impl = dynamic_cast< Internal::BidirectionalSupport* >( handle.GetObjectPtr() );
  63         bidirectionalSupportHandle = TextAbstraction::BidirectionalSupport( impl );
  64       }
  65       else // create and register the object
  66       {
  67         bidirectionalSupportHandle = TextAbstraction::BidirectionalSupport( new BidirectionalSupport );
  68         service.Register( typeid( bidirectionalSupportHandle ), bidirectionalSupportHandle );
  69       }
  70     }
  71     return bidirectionalSupportHandle;
  72   }
  73   BidiInfoIndex CreateInfo( const Character* const paragraph, Length numberOfCharacters ){return 0;}
  74
  75   void DestroyInfo( BidiInfoIndex bidiInfoIndex )
  76   {
  77   }
  78
  79   void Reorder( BidiInfoIndex bidiInfoIndex,CharacterIndex firstCharacterIndex,Length numberOfCharacters,CharacterIndex* visualToLogicalMap )
  80   {
  81   }
  82
  83   bool GetMirroredText( Character* text,CharacterDirection* directions,Length numberOfCharacters )
  84   {
  85     return true;
  86   }
  87
  88   bool GetParagraphDirection( BidiInfoIndex bidiInfoIndex ) const
  89   {
  90     return true;
  91   }
  92
  93   void GetCharactersDirection( BidiInfoIndex bidiInfoIndex, CharacterDirection* directions, Length numberOfCharacters )
  94   {
  95   }
  96 }; // class BidirectionalSupport
  97
  98
  99 class FontClient : public BaseObject
 100 {
 101 public:
 102   FontClient()
 103   : mDpiHorizontal( 0 ),
 104     mDpiVertical( 0 )
 105   {
 106   }
 107
 108   ~FontClient(){}
 109
 110   static Dali::TextAbstraction::FontClient Get()
 111   {
 112     Dali::TextAbstraction::FontClient fontClientHandle;
 113
 114     Dali::SingletonService service( SingletonService::Get() );
 115     if ( service )
 116     {
 117       // Check whether the singleton is already created
 118       Dali::BaseHandle handle = service.GetSingleton( typeid( Dali::TextAbstraction::FontClient ) );
 119       if(handle)
 120       {
 121         // If so, downcast the handle
 122         FontClient* impl = dynamic_cast< Dali::TextAbstraction::Internal::FontClient* >( handle.GetObjectPtr() );
 123         fontClientHandle = Dali::TextAbstraction::FontClient( impl );
 124       }
 125       else // create and register the object
 126       {
 127         fontClientHandle = Dali::TextAbstraction::FontClient( new FontClient );
 128         service.Register( typeid( fontClientHandle ), fontClientHandle );
 129       }
 130     }
 131
 132     return fontClientHandle;
 133   }
 134
 135   void SetDpi( unsigned int horizontalDpi, unsigned int verticalDpi ){}
 136   void GetDpi( unsigned int& horizontalDpi, unsigned int& verticalDpi ){horizontalDpi=verticalDpi=96;}
 137
 138   void ResetSystemDefaults(){}
 139   void GetDefaultFonts( FontList& defaultFonts ){}
 140   void GetDefaultPlatformFontDescription( FontDescription& fontDescription ){}
 141   void GetSystemFonts( FontList& systemFonts ){}
 142   void GetDescription( FontId id, FontDescription& fontDescription ){}
 143   PointSize26Dot6 GetPointSize( FontId id ){return 9;}
 144   FontId FindDefaultFont( Character charcode, PointSize26Dot6 pointSize, bool preferColor ){return 0;}
 145   FontId FindFallbackFont( Character charcode, const FontDescription& fontDescription, PointSize26Dot6 pointSize, bool preferColor ){return 0;}
 146   FontId GetFontId( const FontPath& path, PointSize26Dot6 pointSize, FaceIndex faceIndex ){return 0;}
 147   FontId GetFontId( const FontDescription& fontDescription,PointSize26Dot6 pointSize, FaceIndex faceIndex ){return 0;}
 148   bool IsScalable( const FontPath& path ){return true;}
 149   bool IsScalable( const FontDescription& fontDescription ){return true;}
 150   void GetFixedSizes( const FontPath& path, Dali::Vector< PointSize26Dot6>& sizes ){}
 151   void GetFixedSizes( const FontDescription& fontDescription, Dali::Vector< PointSize26Dot6 >& sizes ){}
 152   void GetFontMetrics( FontId fontId, FontMetrics& metrics ){}
 153   GlyphIndex GetGlyphIndex( FontId fontId, Character charcode ){return 0;}
 154   bool GetGlyphMetrics( GlyphInfo* array, uint32_t size, bool horizontal ){return true;}
 155   PixelData CreateBitmap( FontId fontId, GlyphIndex glyphIndex ){return PixelData();}
 156   void CreateVectorBlob( FontId fontId, GlyphIndex glyphIndex, VectorBlob*& blob,
 157                          unsigned int& blobLength, unsigned int& nominalWidth, unsigned int& nominalHeight )
 158   {
 159     blobLength = 0;
 160   }
 161   const GlyphInfo& GetEllipsisGlyph( PointSize26Dot6 pointSize ){return mGlyphInfo;}
 162 private:
 163   unsigned int mDpiHorizontal;
 164   unsigned int mDpiVertical;
 165   GlyphInfo    mGlyphInfo;
 166 }; // class FontClient
 167
 168
 169 class Shaping : public BaseObject
 170 {
 171 public:
 172   Shaping() : mText(NULL)
 173   {}
 174
 175   ~Shaping()
 176   {
 177     delete [] mText;
 178   }
 179
 180   static Dali::TextAbstraction::Shaping Get()
 181   {
 182     Dali::TextAbstraction::Shaping shapingHandle;
 183
 184     Dali::SingletonService service( SingletonService::Get() );
 185     if ( service )
 186     {
 187       // Check whether the singleton is already created
 188       Dali::BaseHandle handle = service.GetSingleton( typeid( Dali::TextAbstraction::Shaping ) );
 189       if(handle)
 190       {
 191         // If so, downcast the handle
 192         Shaping* impl = dynamic_cast< Dali::TextAbstraction::Internal::Shaping* >( handle.GetObjectPtr() );
 193         shapingHandle = Dali::TextAbstraction::Shaping( impl );
 194       }
 195       else // create and register the object
 196       {
 197         shapingHandle = Dali::TextAbstraction::Shaping( new Shaping );
 198         service.Register( typeid( shapingHandle ), shapingHandle );
 199       }
 200     }
 201     return shapingHandle;
 202   }
 203
 204   void GetGlyphs(GlyphInfo* glyphStore, unsigned int*mappingTable)
 205   {
 206     // Return store & mapping table (0, 1, 2, 3... N-1))
 207     if( glyphStore )
 208     {
 209       memcpy( glyphStore, mText, mNumChars );
 210     }
 211     for( unsigned int i=0; i<mNumChars ; ++i )
 212     {
 213       mappingTable[i] = i;
 214     }
 215   }
 216
 217   Length Shape(unsigned int const* text, unsigned int numChars, unsigned int fontId, Script script)
 218   {
 219     mText = new unsigned char[numChars];
 220     mNumChars = numChars;
 221
 222     memcpy( mText, text, numChars );
 223
 224     return numChars;
 225   }
 226 private:
 227   unsigned char* mText;
 228   unsigned int mNumChars;
 229 };
 230
 231 } // Internal
 232 } // TextAbstraction
 233
 234 inline static TextAbstraction::Internal::BidirectionalSupport& GetImplementation( TextAbstraction::BidirectionalSupport& bidirectionalSupport )
 235 {
 236   DALI_ASSERT_ALWAYS( bidirectionalSupport && "bidirectional support handle is empty" );
 237   BaseObject& object = bidirectionalSupport.GetBaseObject();
 238   return static_cast<TextAbstraction::Internal::BidirectionalSupport&>(object);
 239 }
 240
 241 inline static const TextAbstraction::Internal::BidirectionalSupport& GetImplementation( const TextAbstraction::BidirectionalSupport& bidirectionalSupport )
 242 {
 243   DALI_ASSERT_ALWAYS( bidirectionalSupport && "bidirectional support handle is empty" );
 244   const BaseObject& object = bidirectionalSupport.GetBaseObject();
 245   return static_cast<const TextAbstraction::Internal::BidirectionalSupport&>(object);
 246 }
 247
 248 inline static TextAbstraction::Internal::FontClient& GetImplementation(TextAbstraction::FontClient& fontClient)
 249 {
 250   DALI_ASSERT_ALWAYS( fontClient && "fontClient handle is empty" );
 251   BaseObject& handle = fontClient.GetBaseObject();
 252   return static_cast<TextAbstraction::Internal::FontClient&>(handle);
 253 }
 254
 255 inline static const TextAbstraction::Internal::FontClient& GetImplementation(const TextAbstraction::FontClient& fontClient)
 256 {
 257   DALI_ASSERT_ALWAYS( fontClient && "fontClient handle is empty" );
 258   const BaseObject& handle = fontClient.GetBaseObject();
 259   return static_cast<const TextAbstraction::Internal::FontClient&>(handle);
 260 }
 261
 262 inline static TextAbstraction::Internal::Shaping& GetImplementation(TextAbstraction::Shaping& shaping)
 263 {
 264   DALI_ASSERT_ALWAYS( shaping && "shaping handle is empty" );
 265   BaseObject& handle = shaping.GetBaseObject();
 266   return static_cast<TextAbstraction::Internal::Shaping&>(handle);
 267 }
 268
 269 inline static const TextAbstraction::Internal::Shaping& GetImplementation(const TextAbstraction::Shaping& shaping)
 270 {
 271   DALI_ASSERT_ALWAYS( shaping && "shaping handle is empty" );
 272   const BaseObject& handle = shaping.GetBaseObject();
 273   return static_cast<const TextAbstraction::Internal::Shaping&>(handle);
 274 }
 275
 276
 277 ////////////////////////////////////////////////////////////////////////////////
 278 /******************************************************************************/
 279
 280 namespace TextAbstraction
 281 {
 282 const PointSize26Dot6 FontClient::DEFAULT_POINT_SIZE = 768u; // 12*64
 283
 284 BidirectionalSupport::BidirectionalSupport()
 285 {
 286 }
 287
 288 BidirectionalSupport::~BidirectionalSupport()
 289 {
 290 }
 291
 292 BidirectionalSupport::BidirectionalSupport( Internal::BidirectionalSupport* implementation )
 293 : BaseHandle( implementation )
 294 {
 295 }
 296
 297 BidirectionalSupport BidirectionalSupport::Get()
 298 {
 299   return Internal::BidirectionalSupport::Get();
 300 }
 301
 302 BidiInfoIndex BidirectionalSupport::CreateInfo( const Character* const paragraph,
 303                                                 Length numberOfCharacters )
 304 {
 305   return GetImplementation( *this ).CreateInfo( paragraph, numberOfCharacters );
 306 }
 307
 308 void BidirectionalSupport::DestroyInfo( BidiInfoIndex bidiInfoIndex )
 309 {
 310   GetImplementation( *this ).DestroyInfo( bidiInfoIndex );
 311 }
 312
 313 void BidirectionalSupport::Reorder( BidiInfoIndex bidiInfoIndex,
 314                                     CharacterIndex firstCharacterIndex,
 315                                     Length numberOfCharacters,
 316                                     CharacterIndex* visualToLogicalMap )
 317 {
 318   GetImplementation( *this ).Reorder( bidiInfoIndex, firstCharacterIndex, numberOfCharacters, visualToLogicalMap );
 319 }
 320
 321 bool BidirectionalSupport::GetMirroredText( Character* text,
 322                                             CharacterDirection* directions,
 323                                             Length numberOfCharacters )
 324 {
 325   return GetImplementation( *this ).GetMirroredText( text, directions, numberOfCharacters );
 326 }
 327
 328 bool BidirectionalSupport::GetParagraphDirection( BidiInfoIndex bidiInfoIndex ) const
 329 {
 330   return GetImplementation( *this ).GetParagraphDirection( bidiInfoIndex );
 331 }
 332
 333 void BidirectionalSupport::GetCharactersDirection( BidiInfoIndex bidiInfoIndex,
 334                                                    CharacterDirection* directions,
 335                                                    Length numberOfCharacters )
 336 {
 337   GetImplementation( *this ).GetCharactersDirection( bidiInfoIndex, directions, numberOfCharacters );
 338 }
 339
 340
 341 FontClient FontClient::Get()
 342 {
 343   return Internal::FontClient::Get();
 344 }
 345
 346 FontClient::FontClient()
 347 {
 348 }
 349
 350 FontClient::~FontClient()
 351 {
 352 }
 353
 354 FontClient::FontClient( const FontClient& handle )
 355 : BaseHandle( handle )
 356 {
 357 }
 358
 359 FontClient& FontClient::operator=( const FontClient& handle )
 360 {
 361   BaseHandle::operator=( handle );
 362   return *this;
 363 }
 364
 365 void FontClient::SetDpi( unsigned int horizontalDpi, unsigned int verticalDpi  )
 366 {
 367   GetImplementation(*this).SetDpi( horizontalDpi, verticalDpi );
 368 }
 369
 370 void FontClient::GetDpi( unsigned int& horizontalDpi, unsigned int& verticalDpi )
 371 {
 372   GetImplementation(*this).GetDpi( horizontalDpi, verticalDpi );
 373 }
 374
 375 void FontClient::ResetSystemDefaults()
 376 {
 377   GetImplementation(*this).ResetSystemDefaults();
 378 }
 379
 380 void FontClient::GetDefaultFonts( FontList& defaultFonts )
 381 {
 382   GetImplementation(*this).GetDefaultFonts( defaultFonts );
 383 }
 384
 385 void FontClient::GetDefaultPlatformFontDescription( FontDescription& fontDescription )
 386 {
 387   GetImplementation(*this).GetDefaultPlatformFontDescription( fontDescription );
 388 }
 389
 390 void FontClient::GetSystemFonts( FontList& systemFonts )
 391 {
 392   GetImplementation(*this).GetSystemFonts( systemFonts );
 393 }
 394
 395 void FontClient::GetDescription( FontId id, FontDescription& fontDescription )
 396 {
 397   GetImplementation(*this).GetDescription( id, fontDescription );
 398 }
 399
 400 PointSize26Dot6 FontClient::GetPointSize( FontId id )
 401 {
 402   return GetImplementation(*this).GetPointSize( id );
 403 }
 404
 405 FontId FontClient::FindDefaultFont( Character charcode, PointSize26Dot6 pointSize, bool preferColor )
 406 {
 407   return GetImplementation(*this).FindDefaultFont( charcode, pointSize, preferColor );
 408 }
 409
 410 FontId FontClient::FindFallbackFont( Character charcode, const FontDescription& fontDescription, PointSize26Dot6 pointSize, bool preferColor )
 411 {
 412   return GetImplementation(*this).FindFallbackFont( charcode, fontDescription, pointSize, preferColor );
 413 }
 414
 415 FontId FontClient::GetFontId( const FontPath& path, PointSize26Dot6 pointSize, FaceIndex faceIndex )
 416 {
 417   return GetImplementation(*this).GetFontId( path, pointSize, faceIndex );
 418 }
 419
 420 FontId FontClient::GetFontId( const FontDescription& fontDescription,
 421                               PointSize26Dot6 pointSize,
 422                               FaceIndex faceIndex )
 423 {
 424   return GetImplementation(*this).GetFontId( fontDescription,
 425                                              pointSize,
 426                                              faceIndex );
 427 }
 428
 429 bool FontClient::IsScalable( const FontPath& path )
 430 {
 431   return GetImplementation(*this).IsScalable( path );
 432 }
 433
 434 bool FontClient::IsScalable( const FontDescription& fontDescription )
 435 {
 436   return GetImplementation(*this).IsScalable( fontDescription );
 437 }
 438
 439 void FontClient::GetFixedSizes( const FontPath& path, Dali::Vector< PointSize26Dot6>& sizes )
 440 {
 441   GetImplementation(*this).GetFixedSizes( path, sizes );
 442 }
 443
 444 void FontClient::GetFixedSizes( const FontDescription& fontDescription,
 445                                 Dali::Vector< PointSize26Dot6 >& sizes )
 446 {
 447   GetImplementation(*this).GetFixedSizes( fontDescription, sizes );
 448 }
 449
 450 void FontClient::GetFontMetrics( FontId fontId, FontMetrics& metrics )
 451 {
 452   GetImplementation(*this).GetFontMetrics( fontId, metrics );
 453 }
 454
 455 GlyphIndex FontClient::GetGlyphIndex( FontId fontId, Character charcode )
 456 {
 457   return GetImplementation(*this).GetGlyphIndex( fontId, charcode );
 458 }
 459
 460 bool FontClient::GetGlyphMetrics( GlyphInfo* array, uint32_t size, GlyphType type, bool horizontal )
 461 {
 462   return GetImplementation(*this).GetGlyphMetrics( array, size, horizontal );
 463 }
 464
 465 PixelData FontClient::CreateBitmap( FontId fontId, GlyphIndex glyphIndex )
 466 {
 467   return GetImplementation(*this).CreateBitmap( fontId, glyphIndex );
 468 }
 469
 470
 471 void FontClient::CreateVectorBlob( FontId fontId,
 472                                    GlyphIndex glyphIndex,
 473                                    VectorBlob*& blob,
 474                                    unsigned int& blobLength,
 475                                    unsigned int& nominalWidth,
 476                                    unsigned int& nominalHeight )
 477 {
 478   GetImplementation(*this).CreateVectorBlob( fontId, glyphIndex, blob, blobLength, nominalWidth, nominalHeight );
 479 }
 480
 481 const GlyphInfo& FontClient::GetEllipsisGlyph( PointSize26Dot6 pointSize )
 482 {
 483   return GetImplementation(*this).GetEllipsisGlyph( pointSize );
 484 }
 485
 486 FontClient::FontClient( Internal::FontClient* internal )
 487 : BaseHandle( internal )
 488 {
 489 }
 490
 491 FontMetrics::FontMetrics()
 492 : ascender( 0.f ),
 493   descender( 0.f ),
 494   height( 0.f ),
 495   underlinePosition( 0.f ),
 496   underlineThickness( 0.f )
 497 {
 498 }
 499
 500 GlyphInfo::GlyphInfo()
 501 {
 502 }
 503
 504 Script GetCharacterScript(unsigned int x)
 505 {
 506   return LATIN;
 507 }
 508 bool HasLigatureMustBreak(Script x){return false;}
 509 bool IsCommonScript(unsigned int character){ return false;}
 510 bool IsNewParagraph(unsigned int character){return false;}
 511 bool IsRightToLeftScript(Script){return false;}
 512 bool IsWhiteSpace(unsigned int character)
 513 {
 514   return character < 0x21;
 515 }
 516
 517 Segmentation Segmentation::Get(){ return Segmentation();}
 518 Segmentation::Segmentation(){}
 519 Segmentation::~Segmentation(){}
 520 void Segmentation::GetLineBreakPositions(unsigned int const*, unsigned int, char*){}
 521 void Segmentation::GetWordBreakPositions(unsigned int const*, unsigned int, char*){}
 522
 523 Shaping Shaping::Get()
 524 {
 525   return TextAbstraction::Internal::Shaping::Get();
 526 }
 527
 528 Shaping::Shaping()
 529 {
 530 }
 531
 532 Shaping::Shaping( Internal::Shaping* internal )
 533 : BaseHandle( internal )
 534 {
 535 }
 536
 537 Shaping::~Shaping()
 538 {
 539 }
 540
 541 void Shaping::GetGlyphs(GlyphInfo* glyphStore, unsigned int*mappingTable)
 542 {
 543   // Return store & mapping table (0, 1, 2, 3... N-1))
 544   GetImplementation(*this).GetGlyphs(glyphStore, mappingTable);
 545 }
 546
 547 Length Shaping::Shape(unsigned int const* text, unsigned int numChars, unsigned int fontId, Script script)
 548 {
 549   return GetImplementation(*this).Shape( text, numChars, fontId, script );
 550 }
 551
 552 } // TextAbstraction
 553 } // Dali