dali-toolkit/internal/controls/text-controls/text-label-impl.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
  18 // CLASS HEADER
  19 #include <dali-toolkit/internal/controls/text-controls/text-label-impl.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/public-api/object/type-registry-helper.h>
  23 #include <dali/integration-api/debug.h>
  24
  25 // INTERNAL INCLUDES
  26 #include <dali-toolkit/public-api/text/rendering-backend.h>
  27 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  28 #include <dali-toolkit/internal/text/property-string-parser.h>
  29 #include <dali-toolkit/internal/text/rendering/text-backend.h>
  30 #include <dali-toolkit/internal/text/text-effects-style.h>
  31 #include <dali-toolkit/internal/text/text-font-style.h>
  32 #include <dali-toolkit/internal/text/text-view.h>
  33 #include <dali-toolkit/internal/text/text-definitions.h>
  34 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  35
  36 using Dali::Toolkit::Text::LayoutEngine;
  37 using Dali::Toolkit::Text::Backend;
  38
  39 namespace Dali
  40 {
  41
  42 namespace Toolkit
  43 {
  44
  45 namespace Internal
  46 {
  47
  48 namespace
  49 {
  50   const unsigned int DEFAULT_RENDERING_BACKEND = Dali::Toolkit::Text::DEFAULT_RENDERING_BACKEND;
  51 }
  52
  53 namespace
  54 {
  55
  56 #if defined ( DEBUG_ENABLED )
  57   Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, true, "LOG_TEXT_CONTROLS");
  58 #endif
  59
  60 const Scripting::StringEnum HORIZONTAL_ALIGNMENT_STRING_TABLE[] =
  61 {
  62   { "BEGIN",  Toolkit::Text::LayoutEngine::HORIZONTAL_ALIGN_BEGIN  },
  63   { "CENTER", Toolkit::Text::LayoutEngine::HORIZONTAL_ALIGN_CENTER },
  64   { "END",    Toolkit::Text::LayoutEngine::HORIZONTAL_ALIGN_END    },
  65 };
  66 const unsigned int HORIZONTAL_ALIGNMENT_STRING_TABLE_COUNT = sizeof( HORIZONTAL_ALIGNMENT_STRING_TABLE ) / sizeof( HORIZONTAL_ALIGNMENT_STRING_TABLE[0] );
  67
  68 const Scripting::StringEnum VERTICAL_ALIGNMENT_STRING_TABLE[] =
  69 {
  70   { "TOP",    Toolkit::Text::LayoutEngine::VERTICAL_ALIGN_TOP    },
  71   { "CENTER", Toolkit::Text::LayoutEngine::VERTICAL_ALIGN_CENTER },
  72   { "BOTTOM", Toolkit::Text::LayoutEngine::VERTICAL_ALIGN_BOTTOM },
  73 };
  74 const unsigned int VERTICAL_ALIGNMENT_STRING_TABLE_COUNT = sizeof( VERTICAL_ALIGNMENT_STRING_TABLE ) / sizeof( VERTICAL_ALIGNMENT_STRING_TABLE[0] );
  75
  76 // Type registration
  77 BaseHandle Create()
  78 {
  79   return Toolkit::TextLabel::New();
  80 }
  81
  82 // Setup properties, signals and actions using the type-registry.
  83 DALI_TYPE_REGISTRATION_BEGIN( Toolkit::TextLabel, Toolkit::Control, Create );
  84
  85 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "renderingBackend",     INTEGER, RENDERING_BACKEND      )
  86 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "text",                 STRING,  TEXT                   )
  87 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "fontFamily",           STRING,  FONT_FAMILY            )
  88 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "fontStyle",            STRING,  FONT_STYLE             )
  89 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "pointSize",            FLOAT,   POINT_SIZE             )
  90 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "multiLine",            BOOLEAN, MULTI_LINE             )
  91 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "horizontalAlignment",  STRING,  HORIZONTAL_ALIGNMENT   )
  92 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "verticalAlignment",    STRING,  VERTICAL_ALIGNMENT     )
  93 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "textColor",            VECTOR4, TEXT_COLOR             )
  94 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "shadowOffset",         VECTOR2, SHADOW_OFFSET          )
  95 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "shadowColor",          VECTOR4, SHADOW_COLOR           )
  96 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "underlineEnabled",     BOOLEAN, UNDERLINE_ENABLED      )
  97 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "underlineColor",       VECTOR4, UNDERLINE_COLOR        )
  98 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "underlineHeight",      FLOAT,   UNDERLINE_HEIGHT       )
  99 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "enableMarkup",         BOOLEAN, ENABLE_MARKUP          )
 100 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "enableAutoScroll",     BOOLEAN, ENABLE_AUTO_SCROLL     )
 101 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "autoScrollSpeed",      INTEGER, AUTO_SCROLL_SPEED      )
 102 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "autoScrollLoopCount",  INTEGER, AUTO_SCROLL_LOOP_COUNT )
 103 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "autoScrollGap",        FLOAT,   AUTO_SCROLL_GAP        )
 104 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "lineSpacing",          FLOAT,   LINE_SPACING           )
 105 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "underline",            STRING,  UNDERLINE              )
 106 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "shadow",               STRING,  SHADOW                 )
 107 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "emboss",               STRING,  EMBOSS                 )
 108 DALI_PROPERTY_REGISTRATION( Toolkit, TextLabel, "outline",              STRING,  OUTLINE                )
 109
 110 DALI_TYPE_REGISTRATION_END()
 111
 112
 113
 114 } // namespace
 115
 116 Toolkit::TextLabel TextLabel::New()
 117 {
 118   // Create the implementation, temporarily owned by this handle on stack
 119   IntrusivePtr< TextLabel > impl = new TextLabel();
 120
 121   // Pass ownership to CustomActor handle
 122   Toolkit::TextLabel handle( *impl );
 123
 124   // Second-phase init of the implementation
 125   // This can only be done after the CustomActor connection has been made...
 126   impl->Initialize();
 127
 128   return handle;
 129 }
 130
 131 void TextLabel::SetProperty( BaseObject* object, Property::Index index, const Property::Value& value )
 132 {
 133   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast( Dali::BaseHandle( object ) );
 134
 135   if( label )
 136   {
 137     TextLabel& impl( GetImpl( label ) );
 138     switch( index )
 139     {
 140       case Toolkit::TextLabel::Property::RENDERING_BACKEND:
 141       {
 142         int backend = value.Get< int >();
 143
 144 #ifndef ENABLE_VECTOR_BASED_TEXT_RENDERING
 145         if( Text::RENDERING_VECTOR_BASED == backend )
 146         {
 147           backend = TextAbstraction::BITMAP_GLYPH; // Fallback to bitmap-based rendering
 148         }
 149 #endif
 150         if( impl.mRenderingBackend != backend )
 151         {
 152           impl.mRenderingBackend = backend;
 153           impl.mRenderer.Reset();
 154
 155           if( impl.mController )
 156           {
 157             // When using the vector-based rendering, the size of the GLyphs are different
 158             TextAbstraction::GlyphType glyphType = (Text::RENDERING_VECTOR_BASED == impl.mRenderingBackend) ? TextAbstraction::VECTOR_GLYPH : TextAbstraction::BITMAP_GLYPH;
 159             impl.mController->SetGlyphType( glyphType );
 160           }
 161         }
 162         break;
 163       }
 164       case Toolkit::TextLabel::Property::TEXT:
 165       {
 166         if( impl.mController )
 167         {
 168           impl.mController->SetText( value.Get< std::string >() );
 169         }
 170         break;
 171       }
 172       case Toolkit::TextLabel::Property::FONT_FAMILY:
 173       {
 174         if( impl.mController )
 175         {
 176           const std::string fontFamily = value.Get< std::string >();
 177
 178           DALI_LOG_INFO( gLogFilter, Debug::Verbose, "TextLabel::SetProperty Property::FONT_FAMILY newFont(%s)\n", fontFamily.c_str() );
 179           impl.mController->SetDefaultFontFamily( fontFamily );
 180         }
 181         break;
 182       }
 183       case Toolkit::TextLabel::Property::FONT_STYLE:
 184       {
 185         SetFontStyleProperty( impl.mController, value, Text::FontStyle::DEFAULT );
 186         break;
 187       }
 188       case Toolkit::TextLabel::Property::POINT_SIZE:
 189       {
 190         if( impl.mController )
 191         {
 192           const float pointSize = value.Get< float >();
 193
 194           if( !Equals( impl.mController->GetDefaultPointSize(), pointSize ) )
 195           {
 196             impl.mController->SetDefaultPointSize( pointSize );
 197           }
 198         }
 199         break;
 200       }
 201       case Toolkit::TextLabel::Property::MULTI_LINE:
 202       {
 203         if( impl.mController )
 204         {
 205           impl.mController->SetMultiLineEnabled( value.Get< bool >() );
 206         }
 207         break;
 208       }
 209       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 210       {
 211         if( impl.mController )
 212         {
 213           LayoutEngine::HorizontalAlignment alignment( LayoutEngine::HORIZONTAL_ALIGN_BEGIN );
 214           if( Scripting::GetEnumeration< Toolkit::Text::LayoutEngine::HorizontalAlignment >( value.Get< std::string >().c_str(),
 215                                                                                              HORIZONTAL_ALIGNMENT_STRING_TABLE,
 216                                                                                              HORIZONTAL_ALIGNMENT_STRING_TABLE_COUNT,
 217                                                                                              alignment ) )
 218           {
 219             impl.mController->SetHorizontalAlignment( alignment );
 220           }
 221         }
 222         break;
 223       }
 224       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 225       {
 226         if( impl.mController )
 227         {
 228           LayoutEngine::VerticalAlignment alignment( LayoutEngine::VERTICAL_ALIGN_BOTTOM );
 229           if( Scripting::GetEnumeration< Toolkit::Text::LayoutEngine::VerticalAlignment >( value.Get< std::string >().c_str(),
 230                                                                                            VERTICAL_ALIGNMENT_STRING_TABLE,
 231                                                                                            VERTICAL_ALIGNMENT_STRING_TABLE_COUNT,
 232                                                                                            alignment ) )
 233           {
 234             impl.mController->SetVerticalAlignment( alignment );
 235           }
 236         }
 237         break;
 238       }
 239
 240       case Toolkit::TextLabel::Property::TEXT_COLOR:
 241       {
 242         if( impl.mController )
 243         {
 244           const Vector4 textColor = value.Get< Vector4 >();
 245           if( impl.mController->GetTextColor() != textColor )
 246           {
 247             impl.mController->SetTextColor( textColor );
 248             impl.mRenderer.Reset();
 249           }
 250         }
 251         break;
 252       }
 253
 254       case Toolkit::TextLabel::Property::SHADOW_OFFSET:
 255       {
 256         if( impl.mController )
 257         {
 258           const Vector2 shadowOffset = value.Get< Vector2 >();
 259           if ( impl.mController->GetShadowOffset() != shadowOffset )
 260           {
 261             impl.mController->SetShadowOffset( shadowOffset );
 262             impl.mRenderer.Reset();
 263           }
 264         }
 265         break;
 266       }
 267       case Toolkit::TextLabel::Property::SHADOW_COLOR:
 268       {
 269         if( impl.mController )
 270         {
 271           const Vector4 shadowColor = value.Get< Vector4 >();
 272           if ( impl.mController->GetShadowColor() != shadowColor )
 273           {
 274             impl.mController->SetShadowColor( shadowColor );
 275             impl.mRenderer.Reset();
 276           }
 277         }
 278         break;
 279       }
 280       case Toolkit::TextLabel::Property::UNDERLINE_COLOR:
 281       {
 282         if( impl.mController )
 283         {
 284           const Vector4 color = value.Get< Vector4 >();
 285           if ( impl.mController->GetUnderlineColor() != color )
 286           {
 287             impl.mController->SetUnderlineColor( color );
 288             impl.mRenderer.Reset();
 289           }
 290         }
 291         break;
 292       }
 293       case Toolkit::TextLabel::Property::UNDERLINE_ENABLED:
 294       {
 295         if( impl.mController )
 296         {
 297           const bool enabled = value.Get< bool >();
 298           if ( impl.mController->IsUnderlineEnabled() != enabled )
 299           {
 300             impl.mController->SetUnderlineEnabled( enabled );
 301             impl.mRenderer.Reset();
 302           }
 303         }
 304         break;
 305       }
 306
 307       case Toolkit::TextLabel::Property::UNDERLINE_HEIGHT:
 308       {
 309         if( impl.mController )
 310         {
 311           float height = value.Get< float >();
 312           if( fabsf( impl.mController->GetUnderlineHeight() - height ) > Math::MACHINE_EPSILON_1000 )
 313           {
 314             impl.mController->SetUnderlineHeight( height );
 315             impl.mRenderer.Reset();
 316           }
 317         }
 318         break;
 319       }
 320       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 321       {
 322         if( impl.mController )
 323         {
 324           const bool enableMarkup = value.Get<bool>();
 325           impl.mController->SetMarkupProcessorEnabled( enableMarkup );
 326         }
 327         break;
 328       }
 329       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 330       {
 331         if( impl.mController )
 332         {
 333           const bool enableAutoScroll = value.Get<bool>();
 334           // If request to auto scroll is the same as current state then do nothing.
 335           if ( enableAutoScroll != impl.mController->IsAutoScrollEnabled() )
 336           {
 337              // If request is disable (false) and auto scrolling is enabled then need to stop it
 338              if ( enableAutoScroll == false )
 339              {
 340                if( impl.mTextScroller )
 341                {
 342                  impl.mTextScroller->SetLoopCount( 0 ); // Causes the current animation to finish playing (0)
 343                }
 344              }
 345              // If request is enable (true) then start autoscroll as not already running
 346              else
 347              {
 348                impl.mController->GetLayoutEngine().SetTextEllipsisEnabled( false );
 349                impl.mController->SetAutoScrollEnabled( enableAutoScroll );
 350              }
 351           }
 352         }
 353         break;
 354       }
 355       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 356       {
 357         if( !impl.mTextScroller )
 358         {
 359           impl.mTextScroller = Text::TextScroller::New( impl );
 360         }
 361         impl.mTextScroller->SetSpeed( value.Get<int>() );
 362         break;
 363       }
 364       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 365       {
 366         if( !impl.mTextScroller )
 367         {
 368           impl.mTextScroller = Text::TextScroller::New( impl );
 369         }
 370         impl.mTextScroller->SetLoopCount( value.Get<int>() );
 371         break;
 372       }
 373       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 374       {
 375         if( !impl.mTextScroller )
 376         {
 377           impl.mTextScroller = Text::TextScroller::New( impl );
 378         }
 379         impl.mTextScroller->SetGap( value.Get<float>() );
 380         break;
 381       }
 382       case Toolkit::TextLabel::Property::LINE_SPACING:
 383       {
 384         if( impl.mController )
 385         {
 386           const float lineSpacing = value.Get<float>();
 387           impl.mController->SetDefaultLineSpacing( lineSpacing );
 388           impl.mRenderer.Reset();
 389         }
 390         break;
 391       }
 392       case Toolkit::TextLabel::Property::UNDERLINE:
 393       {
 394         const bool update = SetUnderlineProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 395         if( update )
 396         {
 397           impl.mRenderer.Reset();
 398         }
 399         break;
 400       }
 401       case Toolkit::TextLabel::Property::SHADOW:
 402       {
 403         const bool update = SetShadowProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 404         if( update )
 405         {
 406           impl.mRenderer.Reset();
 407         }
 408         break;
 409       }
 410       case Toolkit::TextLabel::Property::EMBOSS:
 411       {
 412         const bool update = SetEmbossProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 413         if( update )
 414         {
 415           impl.mRenderer.Reset();
 416         }
 417         break;
 418       }
 419       case Toolkit::TextLabel::Property::OUTLINE:
 420       {
 421         const bool update = SetOutlineProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 422         if( update )
 423         {
 424           impl.mRenderer.Reset();
 425         }
 426         break;
 427       }
 428     }
 429   }
 430 }
 431
 432 Property::Value TextLabel::GetProperty( BaseObject* object, Property::Index index )
 433 {
 434   Property::Value value;
 435
 436   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast( Dali::BaseHandle( object ) );
 437
 438   if( label )
 439   {
 440     TextLabel& impl( GetImpl( label ) );
 441     switch( index )
 442     {
 443       case Toolkit::TextLabel::Property::RENDERING_BACKEND:
 444       {
 445         value = impl.mRenderingBackend;
 446         break;
 447       }
 448       case Toolkit::TextLabel::Property::TEXT:
 449       {
 450         if( impl.mController )
 451         {
 452           std::string text;
 453           impl.mController->GetText( text );
 454           value = text;
 455         }
 456         break;
 457       }
 458       case Toolkit::TextLabel::Property::FONT_FAMILY:
 459       {
 460         if( impl.mController )
 461         {
 462           value = impl.mController->GetDefaultFontFamily();
 463         }
 464         break;
 465       }
 466       case Toolkit::TextLabel::Property::FONT_STYLE:
 467       {
 468         GetFontStyleProperty( impl.mController, value, Text::FontStyle::DEFAULT );
 469         break;
 470       }
 471       case Toolkit::TextLabel::Property::POINT_SIZE:
 472       {
 473         if( impl.mController )
 474         {
 475           value = impl.mController->GetDefaultPointSize();
 476         }
 477         break;
 478       }
 479       case Toolkit::TextLabel::Property::MULTI_LINE:
 480       {
 481         if( impl.mController )
 482         {
 483           value = impl.mController->IsMultiLineEnabled();
 484         }
 485         break;
 486       }
 487       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 488       {
 489         if( impl.mController )
 490         {
 491           const char* name = Scripting::GetEnumerationName< Toolkit::Text::LayoutEngine::HorizontalAlignment >( impl.mController->GetHorizontalAlignment(),
 492                                                                                                                 HORIZONTAL_ALIGNMENT_STRING_TABLE,
 493                                                                                                                 HORIZONTAL_ALIGNMENT_STRING_TABLE_COUNT );
 494           if( name )
 495           {
 496             value = std::string( name );
 497           }
 498         }
 499         break;
 500       }
 501       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 502       {
 503         if( impl.mController )
 504         {
 505           const char* name = Scripting::GetEnumerationName< Toolkit::Text::LayoutEngine::VerticalAlignment >( impl.mController->GetVerticalAlignment(),
 506                                                                                                               VERTICAL_ALIGNMENT_STRING_TABLE,
 507                                                                                                               VERTICAL_ALIGNMENT_STRING_TABLE_COUNT );
 508           if( name )
 509           {
 510             value = std::string( name );
 511           }
 512         }
 513         break;
 514       }
 515       case Toolkit::TextLabel::Property::TEXT_COLOR:
 516       {
 517         if ( impl.mController )
 518         {
 519           value = impl.mController->GetTextColor();
 520         }
 521         break;
 522       }
 523       case Toolkit::TextLabel::Property::SHADOW_OFFSET:
 524       {
 525         if ( impl.mController )
 526         {
 527           value = impl.mController->GetShadowOffset();
 528         }
 529         break;
 530       }
 531       case Toolkit::TextLabel::Property::SHADOW_COLOR:
 532       {
 533         if ( impl.mController )
 534         {
 535           value = impl.mController->GetShadowColor();
 536         }
 537         break;
 538       }
 539       case Toolkit::TextLabel::Property::UNDERLINE_COLOR:
 540       {
 541         if ( impl.mController )
 542         {
 543           value = impl.mController->GetUnderlineColor();
 544         }
 545         break;
 546       }
 547       case Toolkit::TextLabel::Property::UNDERLINE_ENABLED:
 548       {
 549         if ( impl.mController )
 550         {
 551           value = impl.mController->IsUnderlineEnabled();
 552         }
 553         break;
 554       }
 555       case Toolkit::TextLabel::Property::UNDERLINE_HEIGHT:
 556       {
 557         if ( impl.mController )
 558         {
 559           value = impl.mController->GetUnderlineHeight();
 560         }
 561         break;
 562       }
 563       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 564       {
 565         if( impl.mController )
 566         {
 567           value = impl.mController->IsMarkupProcessorEnabled();
 568         }
 569         break;
 570       }
 571       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 572       {
 573         if( impl.mController )
 574         {
 575           value = impl.mController->IsAutoScrollEnabled();
 576         }
 577         break;
 578       }
 579       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 580       {
 581         TextLabel& impl( GetImpl( label ) );
 582         if ( impl.mTextScroller )
 583         {
 584           value = impl.mTextScroller->GetSpeed();
 585         }
 586         break;
 587       }
 588       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 589       {
 590         if( impl.mController )
 591         {
 592           TextLabel& impl( GetImpl( label ) );
 593           if ( impl.mTextScroller )
 594           {
 595             value = impl.mTextScroller->GetLoopCount();
 596           }
 597         }
 598         break;
 599       }
 600       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 601       {
 602         TextLabel& impl( GetImpl( label ) );
 603         if ( impl.mTextScroller )
 604         {
 605           value = impl.mTextScroller->GetGap();
 606         }
 607         break;
 608       }
 609       case Toolkit::TextLabel::Property::LINE_SPACING:
 610       {
 611         if( impl.mController )
 612         {
 613           value = impl.mController->GetDefaultLineSpacing();
 614         }
 615         break;
 616       }
 617       case Toolkit::TextLabel::Property::UNDERLINE:
 618       {
 619         GetUnderlineProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 620         break;
 621       }
 622       case Toolkit::TextLabel::Property::SHADOW:
 623       {
 624         GetShadowProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 625         break;
 626       }
 627       case Toolkit::TextLabel::Property::EMBOSS:
 628       {
 629         GetEmbossProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 630         break;
 631       }
 632       case Toolkit::TextLabel::Property::OUTLINE:
 633       {
 634         GetOutlineProperties( impl.mController, value, Text::EffectStyle::DEFAULT );
 635         break;
 636       }
 637     }
 638   }
 639
 640   return value;
 641 }
 642
 643 void TextLabel::OnInitialize()
 644 {
 645   Actor self = Self();
 646
 647   mController = Text::Controller::New( this );
 648
 649   // When using the vector-based rendering, the size of the GLyphs are different
 650   TextAbstraction::GlyphType glyphType = (Text::RENDERING_VECTOR_BASED == mRenderingBackend) ? TextAbstraction::VECTOR_GLYPH : TextAbstraction::BITMAP_GLYPH;
 651   mController->SetGlyphType( glyphType );
 652
 653   // Use height-for-width negotiation by default
 654   self.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH );
 655   self.SetResizePolicy( ResizePolicy::DIMENSION_DEPENDENCY, Dimension::HEIGHT );
 656
 657   // Enable the text ellipsis.
 658   LayoutEngine& engine = mController->GetLayoutEngine();
 659
 660   engine.SetTextEllipsisEnabled( true );   // If false then text larger than control will overflow
 661   engine.SetCursorWidth( 0u ); // Do not layout space for the cursor.
 662
 663   self.OnStageSignal().Connect( this, &TextLabel::OnStageConnect );
 664 }
 665
 666 void TextLabel::OnStyleChange( Toolkit::StyleManager styleManager, StyleChange::Type change )
 667 {
 668   DALI_LOG_INFO( gLogFilter, Debug::Verbose, "TextLabel::OnStyleChange\n");
 669
 670   switch ( change )
 671   {
 672     case StyleChange::DEFAULT_FONT_CHANGE:
 673     {
 674       // Property system did not set the font so should update it.
 675       const std::string& newFont = GetImpl( styleManager ).GetDefaultFontFamily();
 676       DALI_LOG_INFO( gLogFilter, Debug::General, "TextLabel::OnStyleChange StyleChange::DEFAULT_FONT_CHANGE newFont(%s)\n", newFont.c_str() );
 677       mController->UpdateAfterFontChange( newFont );
 678       break;
 679     }
 680
 681     case StyleChange::DEFAULT_FONT_SIZE_CHANGE:
 682     {
 683       GetImpl( styleManager ).ApplyThemeStyle( Toolkit::Control( GetOwner() ) );
 684       break;
 685     }
 686     case StyleChange::THEME_CHANGE:
 687     {
 688       GetImpl( styleManager ).ApplyThemeStyle( Toolkit::Control( GetOwner() ) );
 689       break;
 690     }
 691   }
 692 }
 693
 694 Vector3 TextLabel::GetNaturalSize()
 695 {
 696   return mController->GetNaturalSize();
 697 }
 698
 699 float TextLabel::GetHeightForWidth( float width )
 700 {
 701   return mController->GetHeightForWidth( width );
 702 }
 703
 704 void TextLabel::OnRelayout( const Vector2& size, RelayoutContainer& container )
 705 {
 706   DALI_LOG_INFO( gLogFilter, Debug::General, "TextLabel::OnRelayout\n" );
 707
 708   const Text::Controller::UpdateTextType updateTextType = mController->Relayout( size );
 709
 710   if( ( Text::Controller::NONE_UPDATED != ( Text::Controller::MODEL_UPDATED & updateTextType ) ) ||
 711       !mRenderer )
 712   {
 713     if( !mRenderer )
 714     {
 715       mRenderer = Backend::Get().NewRenderer( mRenderingBackend );
 716     }
 717     RenderText();
 718   }
 719 }
 720
 721 void TextLabel::RequestTextRelayout()
 722 {
 723   RelayoutRequest();
 724 }
 725
 726 void TextLabel::RenderText()
 727 {
 728   DALI_LOG_INFO( gLogFilter, Debug::General, "TextLabel::RenderText IsAutoScrollEnabled[%s] [%p]\n", ( mController->IsAutoScrollEnabled())?"true":"false", this );
 729
 730   Actor self = Self();
 731   Actor renderableActor;
 732
 733   if( mRenderer )
 734   {
 735     renderableActor = mRenderer->Render( mController->GetView(), DepthIndex::TEXT );
 736   }
 737
 738   if( renderableActor != mRenderableActor )
 739   {
 740     UnparentAndReset( mRenderableActor );
 741
 742     if( renderableActor )
 743     {
 744       const Vector2& scrollOffset = mController->GetScrollPosition();
 745       renderableActor.SetPosition( scrollOffset.x, scrollOffset.y );
 746
 747       self.Add( renderableActor );
 748     }
 749     mRenderableActor = renderableActor;
 750
 751     if ( mController->IsAutoScrollEnabled() )
 752     {
 753       SetUpAutoScrolling();
 754     }
 755   }
 756 }
 757
 758 void TextLabel::SetUpAutoScrolling()
 759 {
 760   const Size& controlSize = mController->GetView().GetControlSize();
 761   const Size offScreenSize = GetNaturalSize().GetVectorXY(); // As relayout of text may not be done at this point natural size is used to get size. Single line scrolling only.
 762   const float alignmentOffset = mController->GetAutoScrollLineAlignment();
 763   const Text::CharacterDirection direction = mController->GetAutoScrollDirection();
 764
 765   DALI_LOG_INFO( gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling alignmentOffset[%f] offScreenSize[%f,%f] controlSize[%f,%f]\n",
 766                  alignmentOffset, offScreenSize.x,offScreenSize.y , controlSize.x,controlSize.y );
 767
 768   if ( !mTextScroller )
 769   {
 770     DALI_LOG_INFO( gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling Creating default TextScoller\n" );
 771
 772     // If speed, loopCount or gap not set via property system then will need to create a TextScroller with defaults
 773     mTextScroller = Text::TextScroller::New( *this );
 774   }
 775   mTextScroller->SetParameters( mRenderableActor, controlSize, offScreenSize, direction, alignmentOffset );
 776
 777   Actor self = Self();
 778   self.Add( mTextScroller->GetScrollingText() );
 779   self.Add( mTextScroller->GetSourceCamera() );
 780 }
 781
 782 void TextLabel::OnStageConnect( Dali::Actor actor )
 783 {
 784   if ( mHasBeenStaged )
 785   {
 786     RenderText();
 787   }
 788   else
 789   {
 790     mHasBeenStaged = true;
 791   }
 792 }
 793
 794 void TextLabel::OnStageConnection( int depth )
 795 {
 796   // Call the Control::OnStageConnection() to set the depth of the background.
 797   Control::OnStageConnection( depth );
 798
 799   // The depth of the text renderer is set in the RenderText() called from OnRelayout().
 800 }
 801
 802 void TextLabel::ScrollingFinished()
 803 {
 804   // Pure Virtual from TextScroller Interface
 805   DALI_LOG_INFO( gLogFilter, Debug::General, "TextLabel::ScrollingFinished\n");
 806   mController->SetAutoScrollEnabled( false );
 807   mController->GetLayoutEngine().SetTextEllipsisEnabled( true );
 808   RequestTextRelayout();
 809 }
 810
 811 TextLabel::TextLabel()
 812 : Control( ControlBehaviour( CONTROL_BEHAVIOUR_DEFAULT ) ),
 813   mRenderingBackend( DEFAULT_RENDERING_BACKEND ),
 814   mHasBeenStaged( false )
 815 {
 816 }
 817
 818 TextLabel::~TextLabel()
 819 {
 820 }
 821
 822 } // namespace Internal
 823
 824 } // namespace Toolkit
 825
 826 } // namespace Dali