dali-toolkit/internal/controls/text-controls/text-label-impl.cpp

   1 /*
   2  * Copyright (c) 2022 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/devel-api/actors/actor-devel.h>
  23 #include <dali/devel-api/adaptor-framework/image-loading.h>
  24 #include <dali/devel-api/common/stage.h>
  25 #include <dali/devel-api/object/property-helper-devel.h>
  26 #include <dali/integration-api/debug.h>
  27 #include <dali/public-api/common/dali-common.h>
  28 #include <dali/public-api/object/type-registry-helper.h>
  29
  30 // INTERNAL INCLUDES
  31 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  32 #include <dali-toolkit/devel-api/text/rendering-backend.h>
  33 #include <dali-toolkit/internal/controls/text-controls/common-text-utils.h>
  34 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  35 #include <dali-toolkit/internal/text/property-string-parser.h>
  36 #include <dali-toolkit/internal/text/rendering/text-backend.h>
  37 #include <dali-toolkit/internal/text/text-definitions.h>
  38 #include <dali-toolkit/internal/text/text-effects-style.h>
  39 #include <dali-toolkit/internal/text/text-font-style.h>
  40 #include <dali-toolkit/internal/text/text-view.h>
  41 #include <dali-toolkit/public-api/text/text-enumerations.h>
  42
  43 #include <dali-toolkit/devel-api/controls/control-devel.h>
  44 #include <dali-toolkit/devel-api/visual-factory/visual-base.h>
  45 #include <dali-toolkit/devel-api/visual-factory/visual-factory.h>
  46 #include <dali-toolkit/internal/text/text-enumerations-impl.h>
  47 #include <dali-toolkit/public-api/align-enumerations.h>
  48 #include <dali-toolkit/public-api/visuals/text-visual-properties.h>
  49 #include <dali-toolkit/public-api/visuals/visual-properties.h>
  50
  51 // DEVEL INCLUDES
  52 #include <dali-toolkit/devel-api/controls/text-controls/text-label-devel.h>
  53
  54 using namespace Dali::Toolkit::Text;
  55
  56 namespace Dali
  57 {
  58 namespace Toolkit
  59 {
  60 namespace Internal
  61 {
  62 namespace
  63 {
  64 const unsigned int DEFAULT_RENDERING_BACKEND = Dali::Toolkit::DevelText::DEFAULT_RENDERING_BACKEND;
  65
  66 /**
  67  * @brief How the text visual should be aligned vertically inside the control.
  68  *
  69  * 0.0f aligns the text to the top, 0.5f aligns the text to the center, 1.0f aligns the text to the bottom.
  70  * The alignment depends on the alignment value of the text label (Use Text::VerticalAlignment enumerations).
  71  */
  72 const float VERTICAL_ALIGNMENT_TABLE[Text::VerticalAlignment::BOTTOM + 1] =
  73   {
  74     0.0f, // VerticalAlignment::TOP
  75     0.5f, // VerticalAlignment::CENTER
  76     1.0f  // VerticalAlignment::BOTTOM
  77 };
  78
  79 const std::string TEXT_FIT_ENABLE_KEY("enable");
  80 const std::string TEXT_FIT_MIN_SIZE_KEY("minSize");
  81 const std::string TEXT_FIT_MAX_SIZE_KEY("maxSize");
  82 const std::string TEXT_FIT_STEP_SIZE_KEY("stepSize");
  83 const std::string TEXT_FIT_FONT_SIZE_KEY("fontSize");
  84 const std::string TEXT_FIT_FONT_SIZE_TYPE_KEY("fontSizeType");
  85
  86 #if defined(DEBUG_ENABLED)
  87 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, true, "LOG_TEXT_CONTROLS");
  88 #endif
  89
  90 const Scripting::StringEnum AUTO_SCROLL_STOP_MODE_TABLE[] =
  91   {
  92     {"IMMEDIATE", Toolkit::TextLabel::AutoScrollStopMode::IMMEDIATE},
  93     {"FINISH_LOOP", Toolkit::TextLabel::AutoScrollStopMode::FINISH_LOOP},
  94 };
  95 const unsigned int AUTO_SCROLL_STOP_MODE_TABLE_COUNT = sizeof(AUTO_SCROLL_STOP_MODE_TABLE) / sizeof(AUTO_SCROLL_STOP_MODE_TABLE[0]);
  96
  97 // Type registration
  98 BaseHandle Create()
  99 {
 100   return Toolkit::TextLabel::New();
 101 }
 102
 103 // clang-format off
 104 // Setup properties, signals and actions using the type-registry.
 105 DALI_TYPE_REGISTRATION_BEGIN(Toolkit::TextLabel, Toolkit::Control, Create);
 106
 107 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "text",                         STRING,  TEXT                           )
 108 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "fontFamily",                   STRING,  FONT_FAMILY                    )
 109 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "fontStyle",                    MAP,     FONT_STYLE                     )
 110 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "pointSize",                    FLOAT,   POINT_SIZE                     )
 111 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "multiLine",                    BOOLEAN, MULTI_LINE                     )
 112 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "horizontalAlignment",          STRING,  HORIZONTAL_ALIGNMENT           )
 113 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "verticalAlignment",            STRING,  VERTICAL_ALIGNMENT             )
 114 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "enableMarkup",                 BOOLEAN, ENABLE_MARKUP                  )
 115 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "enableAutoScroll",             BOOLEAN, ENABLE_AUTO_SCROLL             )
 116 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollSpeed",              INTEGER, AUTO_SCROLL_SPEED              )
 117 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollLoopCount",          INTEGER, AUTO_SCROLL_LOOP_COUNT         )
 118 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollGap",                FLOAT,   AUTO_SCROLL_GAP                )
 119 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "lineSpacing",                  FLOAT,   LINE_SPACING                   )
 120 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "underline",                    MAP,     UNDERLINE                      )
 121 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "shadow",                       MAP,     SHADOW                         )
 122 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "emboss",                       MAP,     EMBOSS                         )
 123 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "outline",                      MAP,     OUTLINE                        )
 124 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "pixelSize",                    FLOAT,   PIXEL_SIZE                     )
 125 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "ellipsis",                     BOOLEAN, ELLIPSIS                       )
 126 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollLoopDelay",          FLOAT,   AUTO_SCROLL_LOOP_DELAY         )
 127 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollStopMode",           STRING,  AUTO_SCROLL_STOP_MODE          )
 128 DALI_PROPERTY_REGISTRATION_READ_ONLY(Toolkit,       TextLabel, "lineCount",                    INTEGER, LINE_COUNT                     )
 129 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "lineWrapMode",                 INTEGER, LINE_WRAP_MODE                 )
 130 DALI_DEVEL_PROPERTY_REGISTRATION_READ_ONLY(Toolkit, TextLabel, "textDirection",                INTEGER, TEXT_DIRECTION                 )
 131 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "verticalLineAlignment",        INTEGER, VERTICAL_LINE_ALIGNMENT        )
 132 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "textBackground",               MAP,     BACKGROUND                     )
 133 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "ignoreSpacesAfterText",        BOOLEAN, IGNORE_SPACES_AFTER_TEXT       )
 134 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "matchSystemLanguageDirection", BOOLEAN, MATCH_SYSTEM_LANGUAGE_DIRECTION)
 135 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "textFit",                      MAP,     TEXT_FIT                       )
 136 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "minLineSize",                  FLOAT,   MIN_LINE_SIZE                  )
 137 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "renderingBackend",             INTEGER, RENDERING_BACKEND              )
 138 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "fontSizeScale",                FLOAT,   FONT_SIZE_SCALE                )
 139 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "enableFontSizeScale",          BOOLEAN, ENABLE_FONT_SIZE_SCALE         )
 140 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "ellipsisPosition",             INTEGER, ELLIPSIS_POSITION              )
 141 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "strikethrough",                MAP,     STRIKETHROUGH                  )
 142 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "characterSpacing",             FLOAT,   CHARACTER_SPACING              )
 143
 144 DALI_ANIMATABLE_PROPERTY_REGISTRATION_WITH_DEFAULT(Toolkit, TextLabel, "textColor",      Color::BLACK,     TEXT_COLOR   )
 145 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorRed",   TEXT_COLOR_RED,   TEXT_COLOR, 0)
 146 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorGreen", TEXT_COLOR_GREEN, TEXT_COLOR, 1)
 147 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorBlue",  TEXT_COLOR_BLUE,  TEXT_COLOR, 2)
 148 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorAlpha", TEXT_COLOR_ALPHA, TEXT_COLOR, 3)
 149
 150 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "anchorClicked", SIGNAL_ANCHOR_CLICKED)
 151 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "textFitChanged", SIGNAL_TEXT_FIT_CHANGED)
 152
 153 DALI_TYPE_REGISTRATION_END()
 154 // clang-format on
 155
 156 /// Parses the property map for the TEXT_FIT property
 157 void ParseTextFitProperty(Text::ControllerPtr& controller, const Property::Map* propertiesMap)
 158 {
 159   if(propertiesMap && !propertiesMap->Empty())
 160   {
 161     bool                     enabled      = false;
 162     float                    minSize      = 0.f;
 163     float                    maxSize      = 0.f;
 164     float                    stepSize     = 0.f;
 165     bool                     isMinSizeSet = false, isMaxSizeSet = false, isStepSizeSet = false;
 166     Controller::FontSizeType type = Controller::FontSizeType::POINT_SIZE;
 167
 168     const unsigned int numberOfItems = propertiesMap->Count();
 169
 170     // Parses and applies
 171     for(unsigned int index = 0u; index < numberOfItems; ++index)
 172     {
 173       const KeyValuePair& valueGet = propertiesMap->GetKeyValue(index);
 174
 175       if((Controller::TextFitInfo::Property::TEXT_FIT_ENABLE == valueGet.first.indexKey) || (TEXT_FIT_ENABLE_KEY == valueGet.first.stringKey))
 176       {
 177         /// Enable key.
 178         enabled = valueGet.second.Get<bool>();
 179       }
 180       else if((Controller::TextFitInfo::Property::TEXT_FIT_MIN_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MIN_SIZE_KEY == valueGet.first.stringKey))
 181       {
 182         /// min size.
 183         minSize      = valueGet.second.Get<float>();
 184         isMinSizeSet = true;
 185       }
 186       else if((Controller::TextFitInfo::Property::TEXT_FIT_MAX_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MAX_SIZE_KEY == valueGet.first.stringKey))
 187       {
 188         /// max size.
 189         maxSize      = valueGet.second.Get<float>();
 190         isMaxSizeSet = true;
 191       }
 192       else if((Controller::TextFitInfo::Property::TEXT_FIT_STEP_SIZE == valueGet.first.indexKey) || (TEXT_FIT_STEP_SIZE_KEY == valueGet.first.stringKey))
 193       {
 194         /// step size.
 195         stepSize      = valueGet.second.Get<float>();
 196         isStepSizeSet = true;
 197       }
 198       else if((Controller::TextFitInfo::Property::TEXT_FIT_FONT_SIZE_TYPE == valueGet.first.indexKey) || (TEXT_FIT_FONT_SIZE_TYPE_KEY == valueGet.first.stringKey))
 199       {
 200         if("pixelSize" == valueGet.second.Get<std::string>())
 201         {
 202           type = Controller::FontSizeType::PIXEL_SIZE;
 203         }
 204       }
 205     }
 206
 207     controller->SetTextFitEnabled(enabled);
 208     if(isMinSizeSet)
 209     {
 210       controller->SetTextFitMinSize(minSize, type);
 211     }
 212     if(isMaxSizeSet)
 213     {
 214       controller->SetTextFitMaxSize(maxSize, type);
 215     }
 216     if(isStepSizeSet)
 217     {
 218       controller->SetTextFitStepSize(stepSize, type);
 219     }
 220   }
 221 }
 222
 223 } // namespace
 224
 225 Toolkit::TextLabel TextLabel::New()
 226 {
 227   // Create the implementation, temporarily owned by this handle on stack
 228   IntrusivePtr<TextLabel> impl = new TextLabel();
 229
 230   // Pass ownership to CustomActor handle
 231   Toolkit::TextLabel handle(*impl);
 232
 233   // Second-phase init of the implementation
 234   // This can only be done after the CustomActor connection has been made...
 235   impl->Initialize();
 236
 237   return handle;
 238 }
 239
 240 void TextLabel::SetProperty(BaseObject* object, Property::Index index, const Property::Value& value)
 241 {
 242   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 243
 244   if(label)
 245   {
 246     TextLabel& impl(GetImpl(label));
 247     DALI_ASSERT_ALWAYS(impl.mController && "No text contoller");
 248
 249     switch(index)
 250     {
 251       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 252       {
 253         int backend = value.Get<int>();
 254
 255 #ifndef ENABLE_VECTOR_BASED_TEXT_RENDERING
 256         if(DevelText::RENDERING_VECTOR_BASED == backend)
 257         {
 258           backend = TextAbstraction::BITMAP_GLYPH; // Fallback to bitmap-based rendering
 259         }
 260 #endif
 261         if(impl.mRenderingBackend != backend)
 262         {
 263           impl.mRenderingBackend = backend;
 264           impl.mTextUpdateNeeded = true;
 265
 266           // When using the vector-based rendering, the size of the GLyphs are different
 267           TextAbstraction::GlyphType glyphType = (DevelText::RENDERING_VECTOR_BASED == impl.mRenderingBackend) ? TextAbstraction::VECTOR_GLYPH : TextAbstraction::BITMAP_GLYPH;
 268           impl.mController->SetGlyphType(glyphType);
 269         }
 270         break;
 271       }
 272       case Toolkit::TextLabel::Property::TEXT:
 273       {
 274         impl.mController->SetText(value.Get<std::string>());
 275
 276         if(impl.mController->HasAnchors())
 277         {
 278           // Forward input events to controller
 279           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 280         }
 281         else
 282         {
 283           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 284         }
 285
 286         break;
 287       }
 288       case Toolkit::TextLabel::Property::FONT_FAMILY:
 289       {
 290         const std::string& fontFamily = value.Get<std::string>();
 291
 292         DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::SetProperty Property::FONT_FAMILY newFont(%s)\n", fontFamily.c_str());
 293         impl.mController->SetDefaultFontFamily(fontFamily);
 294         break;
 295       }
 296       case Toolkit::TextLabel::Property::FONT_STYLE:
 297       {
 298         SetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 299         break;
 300       }
 301       case Toolkit::TextLabel::Property::POINT_SIZE:
 302       {
 303         const float pointSize = value.Get<float>();
 304
 305         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE), pointSize))
 306         {
 307           impl.mController->SetDefaultFontSize(pointSize, Text::Controller::POINT_SIZE);
 308         }
 309         break;
 310       }
 311       case Toolkit::TextLabel::Property::MULTI_LINE:
 312       {
 313         impl.mController->SetMultiLineEnabled(value.Get<bool>());
 314         break;
 315       }
 316       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 317       {
 318         Text::HorizontalAlignment::Type alignment(static_cast<Text::HorizontalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 319         if(Text::GetHorizontalAlignmentEnumeration(value, alignment))
 320         {
 321           impl.mController->SetHorizontalAlignment(alignment);
 322         }
 323         break;
 324       }
 325       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 326       {
 327         Toolkit::Text::VerticalAlignment::Type alignment(static_cast<Text::VerticalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 328         if(Text::GetVerticalAlignmentEnumeration(value, alignment))
 329         {
 330           impl.mController->SetVerticalAlignment(alignment);
 331         }
 332         break;
 333       }
 334       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 335       {
 336         const bool enableMarkup = value.Get<bool>();
 337         impl.mController->SetMarkupProcessorEnabled(enableMarkup);
 338
 339         if(impl.mController->HasAnchors())
 340         {
 341           // Forward input events to controller
 342           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 343         }
 344         else
 345         {
 346           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 347         }
 348         break;
 349       }
 350       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 351       {
 352         const bool enableAutoScroll = value.Get<bool>();
 353         // If request to auto scroll is the same as current state then do nothing.
 354         if(enableAutoScroll != impl.mController->IsAutoScrollEnabled())
 355         {
 356           // If request is disable (false) and auto scrolling is enabled then need to stop it
 357           if(enableAutoScroll == false)
 358           {
 359             if(impl.mTextScroller)
 360             {
 361               impl.mTextScroller->StopScrolling();
 362             }
 363           }
 364           // If request is enable (true) then start autoscroll as not already running
 365           else
 366           {
 367             impl.mController->SetAutoScrollEnabled(enableAutoScroll);
 368           }
 369         }
 370         break;
 371       }
 372       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 373       {
 374         Text::TextScrollerPtr                        textScroller = impl.GetTextScroller();
 375         Toolkit::TextLabel::AutoScrollStopMode::Type stopMode     = textScroller->GetStopMode();
 376         if(Scripting::GetEnumerationProperty<Toolkit::TextLabel::AutoScrollStopMode::Type>(value,
 377                                                                                            AUTO_SCROLL_STOP_MODE_TABLE,
 378                                                                                            AUTO_SCROLL_STOP_MODE_TABLE_COUNT,
 379                                                                                            stopMode))
 380         {
 381           textScroller->SetStopMode(stopMode);
 382         }
 383         break;
 384       }
 385       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 386       {
 387         impl.GetTextScroller()->SetSpeed(value.Get<int>());
 388         break;
 389       }
 390       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 391       {
 392         impl.GetTextScroller()->SetLoopCount(value.Get<int>());
 393         break;
 394       }
 395       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 396       {
 397         impl.GetTextScroller()->SetLoopDelay(value.Get<float>());
 398         break;
 399       }
 400       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 401       {
 402         impl.GetTextScroller()->SetGap(value.Get<float>());
 403         break;
 404       }
 405       case Toolkit::TextLabel::Property::LINE_SPACING:
 406       {
 407         const float lineSpacing = value.Get<float>();
 408         impl.mTextUpdateNeeded  = impl.mController->SetDefaultLineSpacing(lineSpacing) || impl.mTextUpdateNeeded;
 409         break;
 410       }
 411       case Toolkit::TextLabel::Property::UNDERLINE:
 412       {
 413         impl.mTextUpdateNeeded = SetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 414         break;
 415       }
 416       case Toolkit::TextLabel::Property::SHADOW:
 417       {
 418         impl.mTextUpdateNeeded = SetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 419         break;
 420       }
 421       case Toolkit::TextLabel::Property::EMBOSS:
 422       {
 423         impl.mTextUpdateNeeded = SetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 424         break;
 425       }
 426       case Toolkit::TextLabel::Property::OUTLINE:
 427       {
 428         impl.mTextUpdateNeeded = SetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 429         break;
 430       }
 431       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 432       {
 433         const float pixelSize = value.Get<float>();
 434         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p PIXEL_SIZE %f\n", impl.mController.Get(), pixelSize);
 435
 436         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE), pixelSize))
 437         {
 438           impl.mController->SetDefaultFontSize(pixelSize, Text::Controller::PIXEL_SIZE);
 439         }
 440         break;
 441       }
 442       case Toolkit::TextLabel::Property::ELLIPSIS:
 443       {
 444         const bool ellipsis = value.Get<bool>();
 445         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p ELLIPSIS %d\n", impl.mController.Get(), ellipsis);
 446
 447         impl.mController->SetTextElideEnabled(ellipsis);
 448         break;
 449       }
 450       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 451       {
 452         Text::LineWrap::Mode lineWrapMode(static_cast<Text::LineWrap::Mode>(-1)); // Set to invalid value to ensure a valid mode does get set
 453         if(GetLineWrapModeEnumeration(value, lineWrapMode))
 454         {
 455           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p LineWrap::MODE %d\n", impl.mController.Get(), lineWrapMode);
 456           impl.mController->SetLineWrapMode(lineWrapMode);
 457         }
 458         break;
 459       }
 460       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 461       {
 462         if(impl.mController->GetTextModel())
 463         {
 464           DevelText::VerticalLineAlignment::Type alignment = static_cast<DevelText::VerticalLineAlignment::Type>(value.Get<int>());
 465
 466           impl.mController->SetVerticalLineAlignment(alignment);
 467
 468           // Property doesn't affect the layout, only Visual must be updated
 469           TextVisual::EnableRendererUpdate(impl.mVisual);
 470
 471           // No need to trigger full re-layout. Instead call UpdateRenderer() directly
 472           TextVisual::UpdateRenderer(impl.mVisual);
 473         }
 474         break;
 475       }
 476       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 477       {
 478         impl.mTextUpdateNeeded = SetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 479         break;
 480       }
 481       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 482       {
 483         impl.mController->SetIgnoreSpacesAfterText(value.Get<bool>());
 484         break;
 485       }
 486       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 487       {
 488         impl.mController->SetMatchLayoutDirection(value.Get<bool>() ? DevelText::MatchLayoutDirection::LOCALE : DevelText::MatchLayoutDirection::CONTENTS);
 489         break;
 490       }
 491       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 492       {
 493         ParseTextFitProperty(impl.mController, value.GetMap());
 494         impl.mController->SetTextFitChanged(true);
 495         break;
 496       }
 497       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 498       {
 499         const float lineSize   = value.Get<float>();
 500         impl.mTextUpdateNeeded = impl.mController->SetDefaultLineSize(lineSize) || impl.mTextUpdateNeeded;
 501         break;
 502       }
 503       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 504       {
 505         const float scale = value.Get<float>();
 506         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p FONT_SIZE_SCALE %f\n", impl.mController.Get(), scale);
 507
 508         if(!Equals(impl.mController->GetFontSizeScale(), scale))
 509         {
 510           impl.mController->SetFontSizeScale(scale);
 511         }
 512         break;
 513       }
 514       case Toolkit::DevelTextLabel::Property::ENABLE_FONT_SIZE_SCALE:
 515       {
 516         const bool enableFontSizeScale = value.Get<bool>();
 517         if(!Equals(impl.mController->IsFontSizeScaleEnabled(), enableFontSizeScale))
 518         {
 519           impl.mController->SetFontSizeScaleEnabled(enableFontSizeScale);
 520         }
 521         break;
 522       }
 523       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 524       {
 525         DevelText::EllipsisPosition::Type ellipsisPositionType(static_cast<DevelText::EllipsisPosition::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 526         if(GetEllipsisPositionTypeEnumeration(value, ellipsisPositionType))
 527         {
 528           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p EllipsisPosition::Type %d\n", impl.mController.Get(), ellipsisPositionType);
 529           impl.mController->SetEllipsisPosition(ellipsisPositionType);
 530         }
 531         break;
 532       }
 533       case Toolkit::DevelTextLabel::Property::STRIKETHROUGH:
 534       {
 535         impl.mTextUpdateNeeded = SetStrikethroughProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 536         break;
 537       }
 538       case Toolkit::DevelTextLabel::Property::CHARACTER_SPACING:
 539       {
 540         const float characterSpacing = value.Get<float>();
 541         impl.mController->SetCharacterSpacing(characterSpacing);
 542         break;
 543       }
 544     }
 545
 546     // Request relayout when text update is needed. It's necessary to call it
 547     // as changing the property not via UI interaction brings no effect if only
 548     // the mTextUpdateNeeded is changed.
 549     if(impl.mTextUpdateNeeded)
 550     {
 551       // need to request relayout as size of text may have changed
 552       impl.RequestTextRelayout();
 553     }
 554   }
 555 }
 556
 557 Text::ControllerPtr TextLabel::GetTextController()
 558 {
 559   return mController;
 560 }
 561
 562 Property::Value TextLabel::GetProperty(BaseObject* object, Property::Index index)
 563 {
 564   Property::Value value;
 565
 566   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 567
 568   if(label)
 569   {
 570     TextLabel& impl(GetImpl(label));
 571     DALI_ASSERT_DEBUG(impl.mController && "No text contoller");
 572
 573     switch(index)
 574     {
 575       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 576       {
 577         value = impl.mRenderingBackend;
 578         break;
 579       }
 580       case Toolkit::TextLabel::Property::TEXT:
 581       {
 582         std::string text;
 583         impl.mController->GetText(text);
 584         value = text;
 585         break;
 586       }
 587       case Toolkit::TextLabel::Property::FONT_FAMILY:
 588       {
 589         value = impl.mController->GetDefaultFontFamily();
 590         break;
 591       }
 592       case Toolkit::TextLabel::Property::FONT_STYLE:
 593       {
 594         GetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 595         break;
 596       }
 597       case Toolkit::TextLabel::Property::POINT_SIZE:
 598       {
 599         value = impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE);
 600         break;
 601       }
 602       case Toolkit::TextLabel::Property::MULTI_LINE:
 603       {
 604         value = impl.mController->IsMultiLineEnabled();
 605         break;
 606       }
 607       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 608       {
 609         const char* name = Text::GetHorizontalAlignmentString(impl.mController->GetHorizontalAlignment());
 610
 611         if(name)
 612         {
 613           value = std::string(name);
 614         }
 615         break;
 616       }
 617       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 618       {
 619         const char* name = Text::GetVerticalAlignmentString(impl.mController->GetVerticalAlignment());
 620         if(name)
 621         {
 622           value = std::string(name);
 623         }
 624         break;
 625       }
 626       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 627       {
 628         value = impl.mController->IsMarkupProcessorEnabled();
 629         break;
 630       }
 631       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 632       {
 633         value = impl.mController->IsAutoScrollEnabled();
 634         break;
 635       }
 636       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 637       {
 638         if(impl.mTextScroller)
 639         {
 640           const char* mode = Scripting::GetEnumerationName<Toolkit::TextLabel::AutoScrollStopMode::Type>(impl.mTextScroller->GetStopMode(),
 641                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE,
 642                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE_COUNT);
 643           if(mode)
 644           {
 645             value = std::string(mode);
 646           }
 647         }
 648         break;
 649       }
 650       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 651       {
 652         if(impl.mTextScroller)
 653         {
 654           value = impl.mTextScroller->GetSpeed();
 655         }
 656         break;
 657       }
 658       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 659       {
 660         if(impl.mTextScroller)
 661         {
 662           value = impl.mTextScroller->GetLoopCount();
 663         }
 664         break;
 665       }
 666       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 667       {
 668         if(impl.mTextScroller)
 669         {
 670           value = impl.mTextScroller->GetLoopDelay();
 671         }
 672         break;
 673       }
 674       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 675       {
 676         if(impl.mTextScroller)
 677         {
 678           value = impl.mTextScroller->GetGap();
 679         }
 680         break;
 681       }
 682       case Toolkit::TextLabel::Property::LINE_SPACING:
 683       {
 684         value = impl.mController->GetDefaultLineSpacing();
 685         break;
 686       }
 687       case Toolkit::TextLabel::Property::UNDERLINE:
 688       {
 689         GetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 690         break;
 691       }
 692       case Toolkit::TextLabel::Property::SHADOW:
 693       {
 694         GetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 695         break;
 696       }
 697       case Toolkit::TextLabel::Property::EMBOSS:
 698       {
 699         GetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 700         break;
 701       }
 702       case Toolkit::TextLabel::Property::OUTLINE:
 703       {
 704         GetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 705         break;
 706       }
 707       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 708       {
 709         value = impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE);
 710         break;
 711       }
 712       case Toolkit::TextLabel::Property::ELLIPSIS:
 713       {
 714         value = impl.mController->IsTextElideEnabled();
 715         break;
 716       }
 717       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 718       {
 719         value = impl.mController->GetLineWrapMode();
 720         break;
 721       }
 722       case Toolkit::TextLabel::Property::LINE_COUNT:
 723       {
 724         float width = label.GetProperty(Actor::Property::SIZE_WIDTH).Get<float>();
 725         value       = impl.mController->GetLineCount(width);
 726         break;
 727       }
 728       case Toolkit::DevelTextLabel::Property::TEXT_DIRECTION:
 729       {
 730         value = impl.mController->GetTextDirection();
 731         break;
 732       }
 733       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 734       {
 735         value = impl.mController->GetVerticalLineAlignment();
 736         break;
 737       }
 738       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 739       {
 740         GetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 741         break;
 742       }
 743       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 744       {
 745         value = impl.mController->IsIgnoreSpacesAfterText();
 746         break;
 747       }
 748       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 749       {
 750         value = impl.mController->GetMatchLayoutDirection() != DevelText::MatchLayoutDirection::CONTENTS;
 751         break;
 752       }
 753       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 754       {
 755         const bool  enabled   = impl.mController->IsTextFitEnabled();
 756         const float minSize   = impl.mController->GetTextFitMinSize();
 757         const float maxSize   = impl.mController->GetTextFitMaxSize();
 758         const float stepSize  = impl.mController->GetTextFitStepSize();
 759         const float pointSize = impl.mController->GetTextFitPointSize();
 760
 761         Property::Map map;
 762         map.Insert(TEXT_FIT_ENABLE_KEY, enabled);
 763         map.Insert(TEXT_FIT_MIN_SIZE_KEY, minSize);
 764         map.Insert(TEXT_FIT_MAX_SIZE_KEY, maxSize);
 765         map.Insert(TEXT_FIT_STEP_SIZE_KEY, stepSize);
 766         map.Insert(TEXT_FIT_FONT_SIZE_KEY, pointSize);
 767         map.Insert(TEXT_FIT_FONT_SIZE_TYPE_KEY, "pointSize");
 768
 769         value = map;
 770         break;
 771       }
 772       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 773       {
 774         value = impl.mController->GetDefaultLineSize();
 775         break;
 776       }
 777       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 778       {
 779         value = impl.mController->GetFontSizeScale();
 780         break;
 781       }
 782       case Toolkit::DevelTextLabel::Property::ENABLE_FONT_SIZE_SCALE:
 783       {
 784         value = impl.mController->IsFontSizeScaleEnabled();
 785         break;
 786       }
 787       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 788       {
 789         value = impl.mController->GetEllipsisPosition();
 790         break;
 791       }
 792       case Toolkit::DevelTextLabel::Property::STRIKETHROUGH:
 793       {
 794         GetStrikethroughProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 795         break;
 796       }
 797       case Toolkit::DevelTextLabel::Property::CHARACTER_SPACING:
 798       {
 799         value = impl.mController->GetCharacterSpacing();
 800         break;
 801       }
 802     }
 803   }
 804
 805   return value;
 806 }
 807
 808 bool TextLabel::DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor)
 809 {
 810   Dali::BaseHandle handle(object);
 811
 812   bool               connected(true);
 813   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(handle);
 814
 815   if(0 == strcmp(signalName.c_str(), SIGNAL_ANCHOR_CLICKED))
 816   {
 817     if(label)
 818     {
 819       Internal::TextLabel& labelImpl(GetImpl(label));
 820       labelImpl.AnchorClickedSignal().Connect(tracker, functor);
 821     }
 822   }
 823   else if(0 == strcmp(signalName.c_str(), SIGNAL_TEXT_FIT_CHANGED))
 824   {
 825     if(label)
 826     {
 827       Internal::TextLabel& labelImpl(GetImpl(label));
 828       labelImpl.TextFitChangedSignal().Connect(tracker, functor);
 829     }
 830   }
 831   else
 832   {
 833     // signalName does not match any signal
 834     connected = false;
 835   }
 836
 837   return connected;
 838 }
 839
 840 DevelTextLabel::AnchorClickedSignalType& TextLabel::AnchorClickedSignal()
 841 {
 842   return mAnchorClickedSignal;
 843 }
 844
 845 DevelTextLabel::TextFitChangedSignalType& TextLabel::TextFitChangedSignal()
 846 {
 847   return mTextFitChangedSignal;
 848 }
 849
 850 void TextLabel::OnInitialize()
 851 {
 852   Actor self = Self();
 853
 854   Property::Map propertyMap;
 855   propertyMap.Add(Toolkit::Visual::Property::TYPE, Toolkit::Visual::TEXT);
 856
 857   mVisual = Toolkit::VisualFactory::Get().CreateVisual(propertyMap);
 858   DevelControl::RegisterVisual(*this, Toolkit::TextLabel::Property::TEXT, mVisual);
 859
 860   TextVisual::SetAnimatableTextColorProperty(mVisual, Toolkit::TextLabel::Property::TEXT_COLOR);
 861
 862   mController = TextVisual::GetController(mVisual);
 863   DALI_ASSERT_DEBUG(mController && "Invalid Text Controller")
 864
 865   mController->SetControlInterface(this);
 866   mController->SetAnchorControlInterface(this);
 867
 868   // Use height-for-width negotiation by default
 869   self.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
 870   self.SetResizePolicy(ResizePolicy::DIMENSION_DEPENDENCY, Dimension::HEIGHT);
 871
 872   // Enable highlightability
 873   self.SetProperty(Toolkit::DevelControl::Property::ACCESSIBILITY_HIGHLIGHTABLE, true);
 874
 875   // Enable the text ellipsis.
 876   mController->SetTextElideEnabled(true); // If false then text larger than control will overflow
 877
 878   // Sets layoutDirection value
 879   Dali::Stage                 stage           = Dali::Stage::GetCurrent();
 880   Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(stage.GetRootLayer().GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 881   mController->SetLayoutDirection(layoutDirection);
 882
 883   self.LayoutDirectionChangedSignal().Connect(this, &TextLabel::OnLayoutDirectionChanged);
 884
 885   Layout::Engine& engine = mController->GetLayoutEngine();
 886   engine.SetCursorWidth(0u); // Do not layout space for the cursor.
 887
 888   DevelControl::SetAccessibilityConstructor(self, [](Dali::Actor actor) {
 889     return std::unique_ptr<Dali::Accessibility::Accessible>(
 890       new AccessibleImpl(actor, Dali::Accessibility::Role::LABEL));
 891   });
 892
 893   Accessibility::Bridge::EnabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 894   Accessibility::Bridge::DisabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 895 }
 896
 897 void TextLabel::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 898 {
 899   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnStyleChange\n");
 900
 901   switch(change)
 902   {
 903     case StyleChange::DEFAULT_FONT_CHANGE:
 904     {
 905       // Property system did not set the font so should update it.
 906       const std::string& newFont = GetImpl(styleManager).GetDefaultFontFamily();
 907       DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnStyleChange StyleChange::DEFAULT_FONT_CHANGE newFont(%s)\n", newFont.c_str());
 908       mController->UpdateAfterFontChange(newFont);
 909       RelayoutRequest();
 910       break;
 911     }
 912     case StyleChange::DEFAULT_FONT_SIZE_CHANGE:
 913     {
 914       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 915       RelayoutRequest();
 916       break;
 917     }
 918     case StyleChange::THEME_CHANGE:
 919     {
 920       // Nothing to do, let control base class handle this
 921       break;
 922     }
 923   }
 924
 925   // Up call to Control
 926   Control::OnStyleChange(styleManager, change);
 927 }
 928
 929 void TextLabel::OnTap(const TapGesture& gesture)
 930 {
 931   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnTap %p\n", mController.Get());
 932
 933   // Deliver the tap before the focus event to controller; this allows us to detect when focus is gained due to tap-gestures
 934   Extents padding;
 935   padding                   = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 936   const Vector2& localPoint = gesture.GetLocalPoint();
 937   mController->AnchorEvent(localPoint.x - padding.start, localPoint.y - padding.top);
 938 }
 939
 940 void TextLabel::AnchorClicked(const std::string& href)
 941 {
 942   Dali::Toolkit::TextLabel handle(GetOwner());
 943   mAnchorClickedSignal.Emit(handle, href.c_str(), href.length());
 944 }
 945
 946 Vector3 TextLabel::GetNaturalSize()
 947 {
 948   Extents padding;
 949   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 950
 951   Vector3 naturalSize = mController->GetNaturalSize();
 952   naturalSize.width += (padding.start + padding.end);
 953   naturalSize.height += (padding.top + padding.bottom);
 954
 955   return naturalSize;
 956 }
 957
 958 float TextLabel::GetHeightForWidth(float width)
 959 {
 960   Extents padding;
 961   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 962
 963   return mController->GetHeightForWidth(width) + padding.top + padding.bottom;
 964 }
 965
 966 void TextLabel::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 967 {
 968   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnPropertySet index[%d]\n", index);
 969
 970   switch(index)
 971   {
 972     case Toolkit::TextLabel::Property::TEXT_COLOR:
 973     {
 974       const Vector4& textColor = propertyValue.Get<Vector4>();
 975       if(mController->GetDefaultColor() != textColor)
 976       {
 977         mController->SetDefaultColor(textColor);
 978         mTextUpdateNeeded = true;
 979       }
 980       break;
 981     }
 982     case Toolkit::TextLabel::Property::TEXT:
 983     case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 984     {
 985       CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
 986       break;
 987     }
 988     default:
 989     {
 990       Control::OnPropertySet(index, propertyValue); // up call to control for non-handled properties
 991       break;
 992     }
 993   }
 994 }
 995
 996 void TextLabel::OnRelayout(const Vector2& size, RelayoutContainer& container)
 997 {
 998   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout\n");
 999
1000   Actor self = Self();
1001
1002   Extents padding;
1003   padding = self.GetProperty<Extents>(Toolkit::Control::Property::PADDING);
1004
1005   Vector2 contentSize(size.x - (padding.start + padding.end), size.y - (padding.top + padding.bottom));
1006
1007   if(mController->IsTextFitEnabled())
1008   {
1009     mController->FitPointSizeforLayout(contentSize);
1010     mController->SetTextFitContentSize(contentSize);
1011   }
1012
1013   // Support Right-To-Left
1014   Dali::LayoutDirection::Type layoutDirection = mController->GetLayoutDirection(self);
1015
1016   const Text::Controller::UpdateTextType updateTextType = mController->Relayout(contentSize, layoutDirection);
1017
1018   if((Text::Controller::NONE_UPDATED != (Text::Controller::MODEL_UPDATED & updateTextType)) || mTextUpdateNeeded)
1019   {
1020     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout IsAutoScrollEnabled[%s] [%p]\n", (mController->IsAutoScrollEnabled()) ? "true" : "false", this);
1021
1022     // Update the visual
1023     TextVisual::EnableRendererUpdate(mVisual);
1024
1025     // Support Right-To-Left of padding
1026     if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
1027     {
1028       std::swap(padding.start, padding.end);
1029     }
1030
1031     // Calculate the size of the visual that can fit the text
1032     Size layoutSize = mController->GetTextModel()->GetLayoutSize();
1033     layoutSize.x    = contentSize.x;
1034
1035     const Vector2& shadowOffset = mController->GetTextModel()->GetShadowOffset();
1036     if(shadowOffset.y > Math::MACHINE_EPSILON_1)
1037     {
1038       layoutSize.y += shadowOffset.y;
1039     }
1040
1041     float outlineWidth = mController->GetTextModel()->GetOutlineWidth();
1042     layoutSize.y += outlineWidth * 2.0f;
1043     layoutSize.y = std::min(layoutSize.y, contentSize.y);
1044
1045     // Calculate the offset for vertical alignment only, as the layout engine will do the horizontal alignment.
1046     Vector2 alignmentOffset;
1047     alignmentOffset.x = 0.0f;
1048     alignmentOffset.y = (contentSize.y - layoutSize.y) * VERTICAL_ALIGNMENT_TABLE[mController->GetVerticalAlignment()];
1049
1050     Property::Map visualTransform;
1051     visualTransform.Add(Toolkit::Visual::Transform::Property::SIZE, layoutSize)
1052       .Add(Toolkit::Visual::Transform::Property::SIZE_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1053       .Add(Toolkit::Visual::Transform::Property::OFFSET, Vector2(padding.start, padding.top) + alignmentOffset)
1054       .Add(Toolkit::Visual::Transform::Property::OFFSET_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1055       .Add(Toolkit::Visual::Transform::Property::ORIGIN, Toolkit::Align::TOP_BEGIN)
1056       .Add(Toolkit::Visual::Transform::Property::ANCHOR_POINT, Toolkit::Align::TOP_BEGIN);
1057     mVisual.SetTransformAndSize(visualTransform, size);
1058
1059     if(mController->IsAutoScrollEnabled())
1060     {
1061       SetUpAutoScrolling();
1062     }
1063
1064     mTextUpdateNeeded = false;
1065   }
1066
1067   if(mController->IsTextFitChanged())
1068   {
1069     EmitTextFitChangedSignal();
1070     mController->SetTextFitChanged(false);
1071   }
1072 }
1073
1074 void TextLabel::RequestTextRelayout()
1075 {
1076   RelayoutRequest();
1077   // Signal that a Relayout may be needed
1078 }
1079
1080 void TextLabel::SetUpAutoScrolling()
1081 {
1082   const Size&                    controlSize     = mController->GetView().GetControlSize();
1083   const Size                     textNaturalSize = GetNaturalSize().GetVectorXY(); // As relayout of text may not be done at this point natural size is used to get size. Single line scrolling only.
1084   const Text::CharacterDirection direction       = mController->GetAutoScrollDirection();
1085
1086   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling textNaturalSize[%f,%f] controlSize[%f,%f]\n", textNaturalSize.x, textNaturalSize.y, controlSize.x, controlSize.y);
1087
1088   if(!mTextScroller)
1089   {
1090     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling Creating default TextScoller\n");
1091
1092     // If speed, loopCount or gap not set via property system then will need to create a TextScroller with defaults
1093     mTextScroller = Text::TextScroller::New(*this);
1094   }
1095
1096   // Calculate the actual gap before scrolling wraps.
1097   int     textPadding = std::max(controlSize.x - textNaturalSize.x, 0.0f);
1098   float   wrapGap     = std::max(mTextScroller->GetGap(), textPadding);
1099   Vector2 textureSize = textNaturalSize + Vector2(wrapGap, 0.0f); // Add the gap as a part of the texture
1100
1101   // Create a texture of the text for scrolling
1102   Size      verifiedSize   = textureSize;
1103   const int maxTextureSize = Dali::GetMaxTextureSize();
1104
1105   //if the texture size width exceed maxTextureSize, modify the visual model size and enabled the ellipsis
1106   bool actualellipsis = mController->IsTextElideEnabled();
1107   if(verifiedSize.width > maxTextureSize)
1108   {
1109     verifiedSize.width = maxTextureSize;
1110     if(textNaturalSize.width > maxTextureSize)
1111     {
1112       mController->SetTextElideEnabled(true);
1113     }
1114     GetHeightForWidth(maxTextureSize);
1115     wrapGap = std::max(maxTextureSize - textNaturalSize.width, 0.0f);
1116   }
1117
1118   Text::TypesetterPtr typesetter = Text::Typesetter::New(mController->GetTextModel());
1119
1120   PixelData data    = typesetter->Render(verifiedSize, mController->GetTextDirection(), Text::Typesetter::RENDER_TEXT_AND_STYLES, true, Pixel::RGBA8888); // ignore the horizontal alignment
1121   Texture   texture = Texture::New(Dali::TextureType::TEXTURE_2D,
1122                                  data.GetPixelFormat(),
1123                                  data.GetWidth(),
1124                                  data.GetHeight());
1125   texture.Upload(data);
1126
1127   TextureSet textureSet = TextureSet::New();
1128   textureSet.SetTexture(0u, texture);
1129
1130   // Filter mode needs to be set to linear to produce better quality while scaling.
1131   Sampler sampler = Sampler::New();
1132   sampler.SetFilterMode(FilterMode::LINEAR, FilterMode::LINEAR);
1133   sampler.SetWrapMode(Dali::WrapMode::DEFAULT, Dali::WrapMode::REPEAT, Dali::WrapMode::DEFAULT); // Wrap the texture in the x direction
1134   textureSet.SetSampler(0u, sampler);
1135
1136   // Set parameters for scrolling
1137   Renderer renderer = static_cast<Internal::Visual::Base&>(GetImplementation(mVisual)).GetRenderer();
1138   mTextScroller->SetParameters(Self(), renderer, textureSet, controlSize, verifiedSize, wrapGap, direction, mController->GetHorizontalAlignment(), mController->GetVerticalAlignment());
1139   mController->SetTextElideEnabled(actualellipsis);
1140 }
1141
1142 void TextLabel::ScrollingFinished()
1143 {
1144   // Pure Virtual from TextScroller Interface
1145   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::ScrollingFinished\n");
1146   mController->SetAutoScrollEnabled(false);
1147   RequestTextRelayout();
1148 }
1149
1150 void TextLabel::OnLayoutDirectionChanged(Actor actor, LayoutDirection::Type type)
1151 {
1152   mController->ChangedLayoutDirection();
1153 }
1154
1155 void TextLabel::EmitTextFitChangedSignal()
1156 {
1157   Dali::Toolkit::TextLabel handle(GetOwner());
1158   mTextFitChangedSignal.Emit(handle);
1159 }
1160
1161 void TextLabel::OnAccessibilityStatusChanged()
1162 {
1163   CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
1164 }
1165
1166 TextLabel::TextLabel()
1167 : Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT)),
1168   mRenderingBackend(DEFAULT_RENDERING_BACKEND),
1169   mTextUpdateNeeded(false)
1170 {
1171 }
1172
1173 TextLabel::~TextLabel()
1174 {
1175 }
1176
1177 Vector<Vector2> TextLabel::GetTextSize(const uint32_t startIndex, const uint32_t endIndex) const
1178 {
1179   return mController->GetTextSize(startIndex, endIndex);
1180 }
1181
1182 Vector<Vector2> TextLabel::GetTextPosition(const uint32_t startIndex, const uint32_t endIndex) const
1183 {
1184   return mController->GetTextPosition(startIndex, endIndex);
1185 }
1186
1187 std::string TextLabel::AccessibleImpl::GetNameRaw() const
1188 {
1189   auto self = Toolkit::TextLabel::DownCast(Self());
1190   return self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1191 }
1192
1193 Property::Index TextLabel::AccessibleImpl::GetNamePropertyIndex()
1194 {
1195   return Toolkit::TextLabel::Property::TEXT;
1196 }
1197
1198 std::string TextLabel::AccessibleImpl::GetText(size_t startOffset, size_t endOffset) const
1199 {
1200   if(endOffset <= startOffset)
1201   {
1202     return {};
1203   }
1204
1205   auto self = Toolkit::TextLabel::DownCast(Self());
1206   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1207
1208   if(startOffset > text.size() || endOffset > text.size())
1209   {
1210     return {};
1211   }
1212
1213   return text.substr(startOffset, endOffset - startOffset);
1214 }
1215
1216 size_t TextLabel::AccessibleImpl::GetCharacterCount() const
1217 {
1218   auto self = Toolkit::TextLabel::DownCast(Self());
1219   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1220
1221   return text.size();
1222 }
1223
1224 size_t TextLabel::AccessibleImpl::GetCursorOffset() const
1225 {
1226   return {};
1227 }
1228
1229 bool TextLabel::AccessibleImpl::SetCursorOffset(size_t offset)
1230 {
1231   return {};
1232 }
1233
1234 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetTextAtOffset(size_t offset, Dali::Accessibility::TextBoundary boundary) const
1235 {
1236   auto self     = Toolkit::TextLabel::DownCast(Self());
1237   auto text     = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1238   auto textSize = text.size();
1239
1240   auto range = Dali::Accessibility::Range{};
1241
1242   switch(boundary)
1243   {
1244     case Dali::Accessibility::TextBoundary::CHARACTER:
1245     {
1246       if(offset < textSize)
1247       {
1248         range.content     = text[offset];
1249         range.startOffset = offset;
1250         range.endOffset   = offset + 1;
1251       }
1252       break;
1253     }
1254     case Dali::Accessibility::TextBoundary::WORD:
1255     case Dali::Accessibility::TextBoundary::LINE:
1256     {
1257       auto textString = text.c_str();
1258       auto breaks     = std::vector<char>(textSize, 0);
1259
1260       if(boundary == Dali::Accessibility::TextBoundary::WORD)
1261       {
1262         Accessibility::Accessible::FindWordSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1263       }
1264       else
1265       {
1266         Accessibility::Accessible::FindLineSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1267       }
1268
1269       auto index   = 0u;
1270       auto counter = 0u;
1271       while(index < textSize && counter <= offset)
1272       {
1273         auto start = index;
1274         if(breaks[index])
1275         {
1276           while(breaks[index])
1277           {
1278             index++;
1279           }
1280           counter++;
1281         }
1282         else
1283         {
1284           if(boundary == Dali::Accessibility::TextBoundary::WORD)
1285           {
1286             index++;
1287           }
1288           if(boundary == Dali::Accessibility::TextBoundary::LINE)
1289           {
1290             counter++;
1291           }
1292         }
1293
1294         if((counter > 0) && ((counter - 1) == offset))
1295         {
1296           range.content     = text.substr(start, index - start + 1);
1297           range.startOffset = start;
1298           range.endOffset   = index + 1;
1299         }
1300
1301         if(boundary == Dali::Accessibility::TextBoundary::LINE)
1302         {
1303           index++;
1304         }
1305       }
1306       break;
1307     }
1308     case Dali::Accessibility::TextBoundary::SENTENCE:
1309     {
1310       /* not supported by default */
1311       break;
1312     }
1313     case Dali::Accessibility::TextBoundary::PARAGRAPH:
1314     {
1315       /* Paragraph is not supported by libunibreak library */
1316       break;
1317     }
1318     default:
1319       break;
1320   }
1321
1322   return range;
1323 }
1324
1325 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetRangeOfSelection(size_t selectionIndex) const
1326 {
1327   // Since DALi supports only one selection indexes higher than 0 are ignored
1328   if(selectionIndex > 0)
1329   {
1330     return {};
1331   }
1332
1333   auto        self       = Toolkit::TextLabel::DownCast(Self());
1334   auto        controller = Dali::Toolkit::GetImpl(self).GetTextController();
1335   std::string value{};
1336   controller->RetrieveSelection(value);
1337   auto indices = controller->GetSelectionIndexes();
1338
1339   return {static_cast<size_t>(indices.first), static_cast<size_t>(indices.second), value};
1340 }
1341
1342 bool TextLabel::AccessibleImpl::RemoveSelection(size_t selectionIndex)
1343 {
1344   // Since DALi supports only one selection indexes higher than 0 are ignored
1345   if(selectionIndex > 0)
1346   {
1347     return false;
1348   }
1349
1350   auto self = Toolkit::TextLabel::DownCast(Self());
1351   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(0, 0);
1352   return true;
1353 }
1354
1355 bool TextLabel::AccessibleImpl::SetRangeOfSelection(size_t selectionIndex, size_t startOffset, size_t endOffset)
1356 {
1357   // Since DALi supports only one selection indexes higher than 0 are ignored
1358   if(selectionIndex > 0)
1359   {
1360     return false;
1361   }
1362
1363   auto self = Toolkit::TextLabel::DownCast(Self());
1364   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(startOffset, endOffset);
1365   return true;
1366 }
1367
1368 int32_t TextLabel::AccessibleImpl::GetLinkCount() const
1369 {
1370   auto self = Toolkit::TextLabel::DownCast(Self());
1371   return Dali::Toolkit::GetImpl(self).mAnchorActors.size();
1372 }
1373
1374 Accessibility::Hyperlink* TextLabel::AccessibleImpl::GetLink(int32_t linkIndex) const
1375 {
1376   if(linkIndex < 0 || linkIndex >= GetLinkCount())
1377   {
1378     return nullptr;
1379   }
1380   auto self        = Toolkit::TextLabel::DownCast(Self());
1381   auto anchorActor = Dali::Toolkit::GetImpl(self).mAnchorActors[linkIndex];
1382   return dynamic_cast<Accessibility::Hyperlink*>(Dali::Accessibility::Accessible::Get(anchorActor));
1383 }
1384
1385 int32_t TextLabel::AccessibleImpl::GetLinkIndex(int32_t characterOffset) const
1386 {
1387   auto self       = Toolkit::TextLabel::DownCast(Self());
1388   auto controller = Dali::Toolkit::GetImpl(self).GetTextController();
1389   return controller->GetAnchorIndex(static_cast<size_t>(characterOffset));
1390 }
1391
1392 } // namespace Internal
1393
1394 } // namespace Toolkit
1395
1396 } // namespace Dali