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

   1 /*
   2  * Copyright (c) 2021 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, "ellipsisPosition",             INTEGER, ELLIPSIS_POSITION              )
 140 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "strikethrough",                MAP,     STRIKETHROUGH                  )
 141
 142 DALI_ANIMATABLE_PROPERTY_REGISTRATION_WITH_DEFAULT(Toolkit, TextLabel, "textColor",      Color::BLACK,     TEXT_COLOR   )
 143 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorRed",   TEXT_COLOR_RED,   TEXT_COLOR, 0)
 144 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorGreen", TEXT_COLOR_GREEN, TEXT_COLOR, 1)
 145 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorBlue",  TEXT_COLOR_BLUE,  TEXT_COLOR, 2)
 146 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorAlpha", TEXT_COLOR_ALPHA, TEXT_COLOR, 3)
 147
 148 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "anchorClicked", SIGNAL_ANCHOR_CLICKED)
 149 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "textFitChanged", SIGNAL_TEXT_FIT_CHANGED)
 150
 151 DALI_TYPE_REGISTRATION_END()
 152 // clang-format on
 153
 154 /// Parses the property map for the TEXT_FIT property
 155 void ParseTextFitProperty(Text::ControllerPtr& controller, const Property::Map* propertiesMap)
 156 {
 157   if(propertiesMap && !propertiesMap->Empty())
 158   {
 159     bool                     enabled      = false;
 160     float                    minSize      = 0.f;
 161     float                    maxSize      = 0.f;
 162     float                    stepSize     = 0.f;
 163     bool                     isMinSizeSet = false, isMaxSizeSet = false, isStepSizeSet = false;
 164     Controller::FontSizeType type = Controller::FontSizeType::POINT_SIZE;
 165
 166     const unsigned int numberOfItems = propertiesMap->Count();
 167
 168     // Parses and applies
 169     for(unsigned int index = 0u; index < numberOfItems; ++index)
 170     {
 171       const KeyValuePair& valueGet = propertiesMap->GetKeyValue(index);
 172
 173       if((Controller::TextFitInfo::Property::TEXT_FIT_ENABLE == valueGet.first.indexKey) || (TEXT_FIT_ENABLE_KEY == valueGet.first.stringKey))
 174       {
 175         /// Enable key.
 176         enabled = valueGet.second.Get<bool>();
 177       }
 178       else if((Controller::TextFitInfo::Property::TEXT_FIT_MIN_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MIN_SIZE_KEY == valueGet.first.stringKey))
 179       {
 180         /// min size.
 181         minSize      = valueGet.second.Get<float>();
 182         isMinSizeSet = true;
 183       }
 184       else if((Controller::TextFitInfo::Property::TEXT_FIT_MAX_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MAX_SIZE_KEY == valueGet.first.stringKey))
 185       {
 186         /// max size.
 187         maxSize      = valueGet.second.Get<float>();
 188         isMaxSizeSet = true;
 189       }
 190       else if((Controller::TextFitInfo::Property::TEXT_FIT_STEP_SIZE == valueGet.first.indexKey) || (TEXT_FIT_STEP_SIZE_KEY == valueGet.first.stringKey))
 191       {
 192         /// step size.
 193         stepSize      = valueGet.second.Get<float>();
 194         isStepSizeSet = true;
 195       }
 196       else if((Controller::TextFitInfo::Property::TEXT_FIT_FONT_SIZE_TYPE == valueGet.first.indexKey) || (TEXT_FIT_FONT_SIZE_TYPE_KEY == valueGet.first.stringKey))
 197       {
 198         if("pixelSize" == valueGet.second.Get<std::string>())
 199         {
 200           type = Controller::FontSizeType::PIXEL_SIZE;
 201         }
 202       }
 203     }
 204
 205     controller->SetTextFitEnabled(enabled);
 206     if(isMinSizeSet)
 207     {
 208       controller->SetTextFitMinSize(minSize, type);
 209     }
 210     if(isMaxSizeSet)
 211     {
 212       controller->SetTextFitMaxSize(maxSize, type);
 213     }
 214     if(isStepSizeSet)
 215     {
 216       controller->SetTextFitStepSize(stepSize, type);
 217     }
 218   }
 219 }
 220
 221 } // namespace
 222
 223 Toolkit::TextLabel TextLabel::New()
 224 {
 225   // Create the implementation, temporarily owned by this handle on stack
 226   IntrusivePtr<TextLabel> impl = new TextLabel();
 227
 228   // Pass ownership to CustomActor handle
 229   Toolkit::TextLabel handle(*impl);
 230
 231   // Second-phase init of the implementation
 232   // This can only be done after the CustomActor connection has been made...
 233   impl->Initialize();
 234
 235   return handle;
 236 }
 237
 238 void TextLabel::SetProperty(BaseObject* object, Property::Index index, const Property::Value& value)
 239 {
 240   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 241
 242   if(label)
 243   {
 244     TextLabel& impl(GetImpl(label));
 245     DALI_ASSERT_ALWAYS(impl.mController && "No text contoller");
 246
 247     switch(index)
 248     {
 249       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 250       {
 251         int backend = value.Get<int>();
 252
 253 #ifndef ENABLE_VECTOR_BASED_TEXT_RENDERING
 254         if(DevelText::RENDERING_VECTOR_BASED == backend)
 255         {
 256           backend = TextAbstraction::BITMAP_GLYPH; // Fallback to bitmap-based rendering
 257         }
 258 #endif
 259         if(impl.mRenderingBackend != backend)
 260         {
 261           impl.mRenderingBackend = backend;
 262           impl.mTextUpdateNeeded = true;
 263
 264           // When using the vector-based rendering, the size of the GLyphs are different
 265           TextAbstraction::GlyphType glyphType = (DevelText::RENDERING_VECTOR_BASED == impl.mRenderingBackend) ? TextAbstraction::VECTOR_GLYPH : TextAbstraction::BITMAP_GLYPH;
 266           impl.mController->SetGlyphType(glyphType);
 267         }
 268         break;
 269       }
 270       case Toolkit::TextLabel::Property::TEXT:
 271       {
 272         impl.mController->SetText(value.Get<std::string>());
 273
 274         if(impl.mController->HasAnchors())
 275         {
 276           // Forward input events to controller
 277           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 278         }
 279         else
 280         {
 281           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 282         }
 283
 284         break;
 285       }
 286       case Toolkit::TextLabel::Property::FONT_FAMILY:
 287       {
 288         const std::string& fontFamily = value.Get<std::string>();
 289
 290         DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::SetProperty Property::FONT_FAMILY newFont(%s)\n", fontFamily.c_str());
 291         impl.mController->SetDefaultFontFamily(fontFamily);
 292         break;
 293       }
 294       case Toolkit::TextLabel::Property::FONT_STYLE:
 295       {
 296         SetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 297         break;
 298       }
 299       case Toolkit::TextLabel::Property::POINT_SIZE:
 300       {
 301         const float pointSize = value.Get<float>();
 302
 303         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE), pointSize))
 304         {
 305           impl.mController->SetDefaultFontSize(pointSize, Text::Controller::POINT_SIZE);
 306         }
 307         break;
 308       }
 309       case Toolkit::TextLabel::Property::MULTI_LINE:
 310       {
 311         impl.mController->SetMultiLineEnabled(value.Get<bool>());
 312         break;
 313       }
 314       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 315       {
 316         Text::HorizontalAlignment::Type alignment(static_cast<Text::HorizontalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 317         if(Text::GetHorizontalAlignmentEnumeration(value, alignment))
 318         {
 319           impl.mController->SetHorizontalAlignment(alignment);
 320         }
 321         break;
 322       }
 323       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 324       {
 325         Toolkit::Text::VerticalAlignment::Type alignment(static_cast<Text::VerticalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 326         if(Text::GetVerticalAlignmentEnumeration(value, alignment))
 327         {
 328           impl.mController->SetVerticalAlignment(alignment);
 329         }
 330         break;
 331       }
 332       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 333       {
 334         const bool enableMarkup = value.Get<bool>();
 335         impl.mController->SetMarkupProcessorEnabled(enableMarkup);
 336
 337         if(impl.mController->HasAnchors())
 338         {
 339           // Forward input events to controller
 340           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 341         }
 342         else
 343         {
 344           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 345         }
 346         break;
 347       }
 348       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 349       {
 350         const bool enableAutoScroll = value.Get<bool>();
 351         // If request to auto scroll is the same as current state then do nothing.
 352         if(enableAutoScroll != impl.mController->IsAutoScrollEnabled())
 353         {
 354           // If request is disable (false) and auto scrolling is enabled then need to stop it
 355           if(enableAutoScroll == false)
 356           {
 357             if(impl.mTextScroller)
 358             {
 359               impl.mTextScroller->StopScrolling();
 360             }
 361           }
 362           // If request is enable (true) then start autoscroll as not already running
 363           else
 364           {
 365             impl.mController->SetAutoScrollEnabled(enableAutoScroll);
 366           }
 367         }
 368         break;
 369       }
 370       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 371       {
 372         Text::TextScrollerPtr                        textScroller = impl.GetTextScroller();
 373         Toolkit::TextLabel::AutoScrollStopMode::Type stopMode     = textScroller->GetStopMode();
 374         if(Scripting::GetEnumerationProperty<Toolkit::TextLabel::AutoScrollStopMode::Type>(value,
 375                                                                                            AUTO_SCROLL_STOP_MODE_TABLE,
 376                                                                                            AUTO_SCROLL_STOP_MODE_TABLE_COUNT,
 377                                                                                            stopMode))
 378         {
 379           textScroller->SetStopMode(stopMode);
 380         }
 381         break;
 382       }
 383       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 384       {
 385         impl.GetTextScroller()->SetSpeed(value.Get<int>());
 386         break;
 387       }
 388       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 389       {
 390         impl.GetTextScroller()->SetLoopCount(value.Get<int>());
 391         break;
 392       }
 393       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 394       {
 395         impl.GetTextScroller()->SetLoopDelay(value.Get<float>());
 396         break;
 397       }
 398       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 399       {
 400         impl.GetTextScroller()->SetGap(value.Get<float>());
 401         break;
 402       }
 403       case Toolkit::TextLabel::Property::LINE_SPACING:
 404       {
 405         const float lineSpacing = value.Get<float>();
 406         impl.mTextUpdateNeeded  = impl.mController->SetDefaultLineSpacing(lineSpacing) || impl.mTextUpdateNeeded;
 407         break;
 408       }
 409       case Toolkit::TextLabel::Property::UNDERLINE:
 410       {
 411         impl.mTextUpdateNeeded = SetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 412         break;
 413       }
 414       case Toolkit::TextLabel::Property::SHADOW:
 415       {
 416         impl.mTextUpdateNeeded = SetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 417         break;
 418       }
 419       case Toolkit::TextLabel::Property::EMBOSS:
 420       {
 421         impl.mTextUpdateNeeded = SetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 422         break;
 423       }
 424       case Toolkit::TextLabel::Property::OUTLINE:
 425       {
 426         impl.mTextUpdateNeeded = SetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 427         break;
 428       }
 429       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 430       {
 431         const float pixelSize = value.Get<float>();
 432         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p PIXEL_SIZE %f\n", impl.mController.Get(), pixelSize);
 433
 434         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE), pixelSize))
 435         {
 436           impl.mController->SetDefaultFontSize(pixelSize, Text::Controller::PIXEL_SIZE);
 437         }
 438         break;
 439       }
 440       case Toolkit::TextLabel::Property::ELLIPSIS:
 441       {
 442         const bool ellipsis = value.Get<bool>();
 443         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p ELLIPSIS %d\n", impl.mController.Get(), ellipsis);
 444
 445         impl.mController->SetTextElideEnabled(ellipsis);
 446         break;
 447       }
 448       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 449       {
 450         Text::LineWrap::Mode lineWrapMode(static_cast<Text::LineWrap::Mode>(-1)); // Set to invalid value to ensure a valid mode does get set
 451         if(GetLineWrapModeEnumeration(value, lineWrapMode))
 452         {
 453           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p LineWrap::MODE %d\n", impl.mController.Get(), lineWrapMode);
 454           impl.mController->SetLineWrapMode(lineWrapMode);
 455         }
 456         break;
 457       }
 458       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 459       {
 460         if(impl.mController->GetTextModel())
 461         {
 462           DevelText::VerticalLineAlignment::Type alignment = static_cast<DevelText::VerticalLineAlignment::Type>(value.Get<int>());
 463
 464           impl.mController->SetVerticalLineAlignment(alignment);
 465
 466           // Property doesn't affect the layout, only Visual must be updated
 467           TextVisual::EnableRendererUpdate(impl.mVisual);
 468
 469           // No need to trigger full re-layout. Instead call UpdateRenderer() directly
 470           TextVisual::UpdateRenderer(impl.mVisual);
 471         }
 472         break;
 473       }
 474       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 475       {
 476         impl.mTextUpdateNeeded = SetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 477         break;
 478       }
 479       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 480       {
 481         impl.mController->SetIgnoreSpacesAfterText(value.Get<bool>());
 482         break;
 483       }
 484       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 485       {
 486         impl.mController->SetMatchLayoutDirection(value.Get<bool>() ? DevelText::MatchLayoutDirection::LOCALE : DevelText::MatchLayoutDirection::CONTENTS);
 487         break;
 488       }
 489       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 490       {
 491         ParseTextFitProperty(impl.mController, value.GetMap());
 492         impl.mController->SetTextFitChanged(true);
 493         break;
 494       }
 495       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 496       {
 497         const float lineSize   = value.Get<float>();
 498         impl.mTextUpdateNeeded = impl.mController->SetDefaultLineSize(lineSize) || impl.mTextUpdateNeeded;
 499         break;
 500       }
 501       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 502       {
 503         const float scale = value.Get<float>();
 504         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p FONT_SIZE_SCALE %f\n", impl.mController.Get(), scale);
 505
 506         if(!Equals(impl.mController->GetFontSizeScale(), scale))
 507         {
 508           impl.mController->SetFontSizeScale(scale);
 509         }
 510         break;
 511       }
 512       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 513       {
 514         DevelText::EllipsisPosition::Type ellipsisPositionType(static_cast<DevelText::EllipsisPosition::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 515         if(GetEllipsisPositionTypeEnumeration(value, ellipsisPositionType))
 516         {
 517           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p EllipsisPosition::Type %d\n", impl.mController.Get(), ellipsisPositionType);
 518           impl.mController->SetEllipsisPosition(ellipsisPositionType);
 519         }
 520         break;
 521       }
 522       case Toolkit::DevelTextLabel::Property::STRIKETHROUGH:
 523       {
 524         impl.mTextUpdateNeeded = SetStrikethroughProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 525         break;
 526       }
 527     }
 528
 529     // Request relayout when text update is needed. It's necessary to call it
 530     // as changing the property not via UI interaction brings no effect if only
 531     // the mTextUpdateNeeded is changed.
 532     if(impl.mTextUpdateNeeded)
 533     {
 534       // need to request relayout as size of text may have changed
 535       impl.RequestTextRelayout();
 536     }
 537   }
 538 }
 539
 540 Text::ControllerPtr TextLabel::GetTextController()
 541 {
 542   return mController;
 543 }
 544
 545 Property::Value TextLabel::GetProperty(BaseObject* object, Property::Index index)
 546 {
 547   Property::Value value;
 548
 549   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 550
 551   if(label)
 552   {
 553     TextLabel& impl(GetImpl(label));
 554     DALI_ASSERT_DEBUG(impl.mController && "No text contoller");
 555
 556     switch(index)
 557     {
 558       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 559       {
 560         value = impl.mRenderingBackend;
 561         break;
 562       }
 563       case Toolkit::TextLabel::Property::TEXT:
 564       {
 565         std::string text;
 566         impl.mController->GetText(text);
 567         value = text;
 568         break;
 569       }
 570       case Toolkit::TextLabel::Property::FONT_FAMILY:
 571       {
 572         value = impl.mController->GetDefaultFontFamily();
 573         break;
 574       }
 575       case Toolkit::TextLabel::Property::FONT_STYLE:
 576       {
 577         GetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 578         break;
 579       }
 580       case Toolkit::TextLabel::Property::POINT_SIZE:
 581       {
 582         value = impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE);
 583         break;
 584       }
 585       case Toolkit::TextLabel::Property::MULTI_LINE:
 586       {
 587         value = impl.mController->IsMultiLineEnabled();
 588         break;
 589       }
 590       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 591       {
 592         const char* name = Text::GetHorizontalAlignmentString(impl.mController->GetHorizontalAlignment());
 593
 594         if(name)
 595         {
 596           value = std::string(name);
 597         }
 598         break;
 599       }
 600       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 601       {
 602         const char* name = Text::GetVerticalAlignmentString(impl.mController->GetVerticalAlignment());
 603         if(name)
 604         {
 605           value = std::string(name);
 606         }
 607         break;
 608       }
 609       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 610       {
 611         value = impl.mController->IsMarkupProcessorEnabled();
 612         break;
 613       }
 614       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 615       {
 616         value = impl.mController->IsAutoScrollEnabled();
 617         break;
 618       }
 619       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 620       {
 621         if(impl.mTextScroller)
 622         {
 623           const char* mode = Scripting::GetEnumerationName<Toolkit::TextLabel::AutoScrollStopMode::Type>(impl.mTextScroller->GetStopMode(),
 624                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE,
 625                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE_COUNT);
 626           if(mode)
 627           {
 628             value = std::string(mode);
 629           }
 630         }
 631         break;
 632       }
 633       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 634       {
 635         if(impl.mTextScroller)
 636         {
 637           value = impl.mTextScroller->GetSpeed();
 638         }
 639         break;
 640       }
 641       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 642       {
 643         if(impl.mTextScroller)
 644         {
 645           value = impl.mTextScroller->GetLoopCount();
 646         }
 647         break;
 648       }
 649       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 650       {
 651         if(impl.mTextScroller)
 652         {
 653           value = impl.mTextScroller->GetLoopDelay();
 654         }
 655         break;
 656       }
 657       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 658       {
 659         if(impl.mTextScroller)
 660         {
 661           value = impl.mTextScroller->GetGap();
 662         }
 663         break;
 664       }
 665       case Toolkit::TextLabel::Property::LINE_SPACING:
 666       {
 667         value = impl.mController->GetDefaultLineSpacing();
 668         break;
 669       }
 670       case Toolkit::TextLabel::Property::UNDERLINE:
 671       {
 672         GetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 673         break;
 674       }
 675       case Toolkit::TextLabel::Property::SHADOW:
 676       {
 677         GetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 678         break;
 679       }
 680       case Toolkit::TextLabel::Property::EMBOSS:
 681       {
 682         GetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 683         break;
 684       }
 685       case Toolkit::TextLabel::Property::OUTLINE:
 686       {
 687         GetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 688         break;
 689       }
 690       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 691       {
 692         value = impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE);
 693         break;
 694       }
 695       case Toolkit::TextLabel::Property::ELLIPSIS:
 696       {
 697         value = impl.mController->IsTextElideEnabled();
 698         break;
 699       }
 700       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 701       {
 702         value = impl.mController->GetLineWrapMode();
 703         break;
 704       }
 705       case Toolkit::TextLabel::Property::LINE_COUNT:
 706       {
 707         float width = label.GetProperty(Actor::Property::SIZE_WIDTH).Get<float>();
 708         value       = impl.mController->GetLineCount(width);
 709         break;
 710       }
 711       case Toolkit::DevelTextLabel::Property::TEXT_DIRECTION:
 712       {
 713         value = impl.mController->GetTextDirection();
 714         break;
 715       }
 716       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 717       {
 718         value = impl.mController->GetVerticalLineAlignment();
 719         break;
 720       }
 721       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 722       {
 723         GetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 724         break;
 725       }
 726       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 727       {
 728         value = impl.mController->IsIgnoreSpacesAfterText();
 729         break;
 730       }
 731       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 732       {
 733         value = impl.mController->GetMatchLayoutDirection() != DevelText::MatchLayoutDirection::CONTENTS;
 734         break;
 735       }
 736       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 737       {
 738         const bool  enabled   = impl.mController->IsTextFitEnabled();
 739         const float minSize   = impl.mController->GetTextFitMinSize();
 740         const float maxSize   = impl.mController->GetTextFitMaxSize();
 741         const float stepSize  = impl.mController->GetTextFitStepSize();
 742         const float pointSize = impl.mController->GetTextFitPointSize();
 743
 744         Property::Map map;
 745         map.Insert(TEXT_FIT_ENABLE_KEY, enabled);
 746         map.Insert(TEXT_FIT_MIN_SIZE_KEY, minSize);
 747         map.Insert(TEXT_FIT_MAX_SIZE_KEY, maxSize);
 748         map.Insert(TEXT_FIT_STEP_SIZE_KEY, stepSize);
 749         map.Insert(TEXT_FIT_FONT_SIZE_KEY, pointSize);
 750         map.Insert(TEXT_FIT_FONT_SIZE_TYPE_KEY, "pointSize");
 751
 752         value = map;
 753         break;
 754       }
 755       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 756       {
 757         value = impl.mController->GetDefaultLineSize();
 758         break;
 759       }
 760       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 761       {
 762         value = impl.mController->GetFontSizeScale();
 763         break;
 764       }
 765       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 766       {
 767         value = impl.mController->GetEllipsisPosition();
 768         break;
 769       }
 770       case Toolkit::DevelTextLabel::Property::STRIKETHROUGH:
 771       {
 772         GetStrikethroughProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 773         break;
 774       }
 775     }
 776   }
 777
 778   return value;
 779 }
 780
 781 bool TextLabel::DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor)
 782 {
 783   Dali::BaseHandle handle(object);
 784
 785   bool               connected(true);
 786   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(handle);
 787
 788   if(0 == strcmp(signalName.c_str(), SIGNAL_ANCHOR_CLICKED))
 789   {
 790     if(label)
 791     {
 792       Internal::TextLabel& labelImpl(GetImpl(label));
 793       labelImpl.AnchorClickedSignal().Connect(tracker, functor);
 794     }
 795   }
 796   else if(0 == strcmp(signalName.c_str(), SIGNAL_TEXT_FIT_CHANGED))
 797   {
 798     if(label)
 799     {
 800       Internal::TextLabel& labelImpl(GetImpl(label));
 801       labelImpl.TextFitChangedSignal().Connect(tracker, functor);
 802     }
 803   }
 804   else
 805   {
 806     // signalName does not match any signal
 807     connected = false;
 808   }
 809
 810   return connected;
 811 }
 812
 813 DevelTextLabel::AnchorClickedSignalType& TextLabel::AnchorClickedSignal()
 814 {
 815   return mAnchorClickedSignal;
 816 }
 817
 818 DevelTextLabel::TextFitChangedSignalType& TextLabel::TextFitChangedSignal()
 819 {
 820   return mTextFitChangedSignal;
 821 }
 822
 823 void TextLabel::OnInitialize()
 824 {
 825   Actor self = Self();
 826
 827   Property::Map propertyMap;
 828   propertyMap.Add(Toolkit::Visual::Property::TYPE, Toolkit::Visual::TEXT);
 829
 830   mVisual = Toolkit::VisualFactory::Get().CreateVisual(propertyMap);
 831   DevelControl::RegisterVisual(*this, Toolkit::TextLabel::Property::TEXT, mVisual);
 832
 833   TextVisual::SetAnimatableTextColorProperty(mVisual, Toolkit::TextLabel::Property::TEXT_COLOR);
 834
 835   mController = TextVisual::GetController(mVisual);
 836   DALI_ASSERT_DEBUG(mController && "Invalid Text Controller")
 837
 838   mController->SetControlInterface(this);
 839   mController->SetAnchorControlInterface(this);
 840
 841   // Use height-for-width negotiation by default
 842   self.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
 843   self.SetResizePolicy(ResizePolicy::DIMENSION_DEPENDENCY, Dimension::HEIGHT);
 844
 845   // Enable highlightability
 846   self.SetProperty(Toolkit::DevelControl::Property::ACCESSIBILITY_HIGHLIGHTABLE, true);
 847
 848   // Enable the text ellipsis.
 849   mController->SetTextElideEnabled(true); // If false then text larger than control will overflow
 850
 851   // Sets layoutDirection value
 852   Dali::Stage                 stage           = Dali::Stage::GetCurrent();
 853   Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(stage.GetRootLayer().GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 854   mController->SetLayoutDirection(layoutDirection);
 855
 856   self.LayoutDirectionChangedSignal().Connect(this, &TextLabel::OnLayoutDirectionChanged);
 857
 858   Layout::Engine& engine = mController->GetLayoutEngine();
 859   engine.SetCursorWidth(0u); // Do not layout space for the cursor.
 860
 861   DevelControl::SetAccessibilityConstructor(self, [](Dali::Actor actor) {
 862     return std::unique_ptr<Dali::Accessibility::Accessible>(
 863       new AccessibleImpl(actor, Dali::Accessibility::Role::LABEL));
 864   });
 865
 866   Accessibility::Bridge::EnabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 867   Accessibility::Bridge::DisabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 868 }
 869
 870 void TextLabel::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 871 {
 872   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnStyleChange\n");
 873
 874   switch(change)
 875   {
 876     case StyleChange::DEFAULT_FONT_CHANGE:
 877     {
 878       // Property system did not set the font so should update it.
 879       const std::string& newFont = GetImpl(styleManager).GetDefaultFontFamily();
 880       DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnStyleChange StyleChange::DEFAULT_FONT_CHANGE newFont(%s)\n", newFont.c_str());
 881       mController->UpdateAfterFontChange(newFont);
 882       RelayoutRequest();
 883       break;
 884     }
 885     case StyleChange::DEFAULT_FONT_SIZE_CHANGE:
 886     {
 887       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 888       RelayoutRequest();
 889       break;
 890     }
 891     case StyleChange::THEME_CHANGE:
 892     {
 893       // Nothing to do, let control base class handle this
 894       break;
 895     }
 896   }
 897
 898   // Up call to Control
 899   Control::OnStyleChange(styleManager, change);
 900 }
 901
 902 void TextLabel::OnTap(const TapGesture& gesture)
 903 {
 904   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnTap %p\n", mController.Get());
 905
 906   // Deliver the tap before the focus event to controller; this allows us to detect when focus is gained due to tap-gestures
 907   Extents padding;
 908   padding                   = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 909   const Vector2& localPoint = gesture.GetLocalPoint();
 910   mController->AnchorEvent(localPoint.x - padding.start, localPoint.y - padding.top);
 911 }
 912
 913 void TextLabel::AnchorClicked(const std::string& href)
 914 {
 915   Dali::Toolkit::TextLabel handle(GetOwner());
 916   mAnchorClickedSignal.Emit(handle, href.c_str(), href.length());
 917 }
 918
 919 Vector3 TextLabel::GetNaturalSize()
 920 {
 921   Extents padding;
 922   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 923
 924   Vector3 naturalSize = mController->GetNaturalSize();
 925   naturalSize.width += (padding.start + padding.end);
 926   naturalSize.height += (padding.top + padding.bottom);
 927
 928   return naturalSize;
 929 }
 930
 931 float TextLabel::GetHeightForWidth(float width)
 932 {
 933   Extents padding;
 934   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 935
 936   return mController->GetHeightForWidth(width) + padding.top + padding.bottom;
 937 }
 938
 939 void TextLabel::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 940 {
 941   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnPropertySet index[%d]\n", index);
 942
 943   switch(index)
 944   {
 945     case Toolkit::TextLabel::Property::TEXT_COLOR:
 946     {
 947       const Vector4& textColor = propertyValue.Get<Vector4>();
 948       if(mController->GetDefaultColor() != textColor)
 949       {
 950         mController->SetDefaultColor(textColor);
 951         mTextUpdateNeeded = true;
 952       }
 953       break;
 954     }
 955     case Toolkit::TextLabel::Property::TEXT:
 956     case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 957     {
 958       CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
 959       break;
 960     }
 961     default:
 962     {
 963       Control::OnPropertySet(index, propertyValue); // up call to control for non-handled properties
 964       break;
 965     }
 966   }
 967 }
 968
 969 void TextLabel::OnRelayout(const Vector2& size, RelayoutContainer& container)
 970 {
 971   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout\n");
 972
 973   Actor self = Self();
 974
 975   Extents padding;
 976   padding = self.GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 977
 978   Vector2 contentSize(size.x - (padding.start + padding.end), size.y - (padding.top + padding.bottom));
 979
 980   if(mController->IsTextFitEnabled())
 981   {
 982     mController->FitPointSizeforLayout(contentSize);
 983     mController->SetTextFitContentSize(contentSize);
 984   }
 985
 986   // Support Right-To-Left
 987   Dali::LayoutDirection::Type layoutDirection = mController->GetLayoutDirection(self);
 988
 989   const Text::Controller::UpdateTextType updateTextType = mController->Relayout(contentSize, layoutDirection);
 990
 991   if((Text::Controller::NONE_UPDATED != (Text::Controller::MODEL_UPDATED & updateTextType)) || mTextUpdateNeeded)
 992   {
 993     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout IsAutoScrollEnabled[%s] [%p]\n", (mController->IsAutoScrollEnabled()) ? "true" : "false", this);
 994
 995     // Update the visual
 996     TextVisual::EnableRendererUpdate(mVisual);
 997
 998     // Support Right-To-Left of padding
 999     if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
1000     {
1001       std::swap(padding.start, padding.end);
1002     }
1003
1004     // Calculate the size of the visual that can fit the text
1005     Size layoutSize = mController->GetTextModel()->GetLayoutSize();
1006     layoutSize.x    = contentSize.x;
1007
1008     const Vector2& shadowOffset = mController->GetTextModel()->GetShadowOffset();
1009     if(shadowOffset.y > Math::MACHINE_EPSILON_1)
1010     {
1011       layoutSize.y += shadowOffset.y;
1012     }
1013
1014     float outlineWidth = mController->GetTextModel()->GetOutlineWidth();
1015     layoutSize.y += outlineWidth * 2.0f;
1016     layoutSize.y = std::min(layoutSize.y, contentSize.y);
1017
1018     // Calculate the offset for vertical alignment only, as the layout engine will do the horizontal alignment.
1019     Vector2 alignmentOffset;
1020     alignmentOffset.x = 0.0f;
1021     alignmentOffset.y = (contentSize.y - layoutSize.y) * VERTICAL_ALIGNMENT_TABLE[mController->GetVerticalAlignment()];
1022
1023     Property::Map visualTransform;
1024     visualTransform.Add(Toolkit::Visual::Transform::Property::SIZE, layoutSize)
1025       .Add(Toolkit::Visual::Transform::Property::SIZE_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1026       .Add(Toolkit::Visual::Transform::Property::OFFSET, Vector2(padding.start, padding.top) + alignmentOffset)
1027       .Add(Toolkit::Visual::Transform::Property::OFFSET_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1028       .Add(Toolkit::Visual::Transform::Property::ORIGIN, Toolkit::Align::TOP_BEGIN)
1029       .Add(Toolkit::Visual::Transform::Property::ANCHOR_POINT, Toolkit::Align::TOP_BEGIN);
1030     mVisual.SetTransformAndSize(visualTransform, size);
1031
1032     if(mController->IsAutoScrollEnabled())
1033     {
1034       SetUpAutoScrolling();
1035     }
1036
1037     mTextUpdateNeeded = false;
1038   }
1039
1040   if(mController->IsTextFitChanged())
1041   {
1042     EmitTextFitChangedSignal();
1043     mController->SetTextFitChanged(false);
1044   }
1045 }
1046
1047 void TextLabel::RequestTextRelayout()
1048 {
1049   RelayoutRequest();
1050   // Signal that a Relayout may be needed
1051 }
1052
1053 void TextLabel::SetUpAutoScrolling()
1054 {
1055   const Size&                    controlSize     = mController->GetView().GetControlSize();
1056   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.
1057   const Text::CharacterDirection direction       = mController->GetAutoScrollDirection();
1058
1059   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling textNaturalSize[%f,%f] controlSize[%f,%f]\n", textNaturalSize.x, textNaturalSize.y, controlSize.x, controlSize.y);
1060
1061   if(!mTextScroller)
1062   {
1063     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling Creating default TextScoller\n");
1064
1065     // If speed, loopCount or gap not set via property system then will need to create a TextScroller with defaults
1066     mTextScroller = Text::TextScroller::New(*this);
1067   }
1068
1069   // Calculate the actual gap before scrolling wraps.
1070   int     textPadding = std::max(controlSize.x - textNaturalSize.x, 0.0f);
1071   float   wrapGap     = std::max(mTextScroller->GetGap(), textPadding);
1072   Vector2 textureSize = textNaturalSize + Vector2(wrapGap, 0.0f); // Add the gap as a part of the texture
1073
1074   // Create a texture of the text for scrolling
1075   Size      verifiedSize   = textureSize;
1076   const int maxTextureSize = Dali::GetMaxTextureSize();
1077
1078   //if the texture size width exceed maxTextureSize, modify the visual model size and enabled the ellipsis
1079   bool actualellipsis = mController->IsTextElideEnabled();
1080   if(verifiedSize.width > maxTextureSize)
1081   {
1082     verifiedSize.width = maxTextureSize;
1083     if(textNaturalSize.width > maxTextureSize)
1084     {
1085       mController->SetTextElideEnabled(true);
1086     }
1087     GetHeightForWidth(maxTextureSize);
1088     wrapGap = std::max(maxTextureSize - textNaturalSize.width, 0.0f);
1089   }
1090
1091   Text::TypesetterPtr typesetter = Text::Typesetter::New(mController->GetTextModel());
1092
1093   PixelData data    = typesetter->Render(verifiedSize, mController->GetTextDirection(), Text::Typesetter::RENDER_TEXT_AND_STYLES, true, Pixel::RGBA8888); // ignore the horizontal alignment
1094   Texture   texture = Texture::New(Dali::TextureType::TEXTURE_2D,
1095                                  data.GetPixelFormat(),
1096                                  data.GetWidth(),
1097                                  data.GetHeight());
1098   texture.Upload(data);
1099
1100   TextureSet textureSet = TextureSet::New();
1101   textureSet.SetTexture(0u, texture);
1102
1103   // Filter mode needs to be set to linear to produce better quality while scaling.
1104   Sampler sampler = Sampler::New();
1105   sampler.SetFilterMode(FilterMode::LINEAR, FilterMode::LINEAR);
1106   sampler.SetWrapMode(Dali::WrapMode::DEFAULT, Dali::WrapMode::REPEAT, Dali::WrapMode::DEFAULT); // Wrap the texture in the x direction
1107   textureSet.SetSampler(0u, sampler);
1108
1109   // Set parameters for scrolling
1110   Renderer renderer = static_cast<Internal::Visual::Base&>(GetImplementation(mVisual)).GetRenderer();
1111   mTextScroller->SetParameters(Self(), renderer, textureSet, controlSize, verifiedSize, wrapGap, direction, mController->GetHorizontalAlignment(), mController->GetVerticalAlignment());
1112   mController->SetTextElideEnabled(actualellipsis);
1113 }
1114
1115 void TextLabel::ScrollingFinished()
1116 {
1117   // Pure Virtual from TextScroller Interface
1118   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::ScrollingFinished\n");
1119   mController->SetAutoScrollEnabled(false);
1120   RequestTextRelayout();
1121 }
1122
1123 void TextLabel::OnLayoutDirectionChanged(Actor actor, LayoutDirection::Type type)
1124 {
1125   mController->ChangedLayoutDirection();
1126 }
1127
1128 void TextLabel::EmitTextFitChangedSignal()
1129 {
1130   Dali::Toolkit::TextLabel handle(GetOwner());
1131   mTextFitChangedSignal.Emit(handle);
1132 }
1133
1134 void TextLabel::OnAccessibilityStatusChanged()
1135 {
1136   CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
1137 }
1138
1139 TextLabel::TextLabel()
1140 : Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT)),
1141   mRenderingBackend(DEFAULT_RENDERING_BACKEND),
1142   mTextUpdateNeeded(false)
1143 {
1144 }
1145
1146 TextLabel::~TextLabel()
1147 {
1148 }
1149
1150 Vector<Vector2> TextLabel::GetTextSize(const uint32_t startIndex, const uint32_t endIndex) const
1151 {
1152   return mController->GetTextSize(startIndex, endIndex);
1153 }
1154
1155 Vector<Vector2> TextLabel::GetTextPosition(const uint32_t startIndex, const uint32_t endIndex) const
1156 {
1157   return mController->GetTextPosition(startIndex, endIndex);
1158 }
1159
1160 std::string TextLabel::AccessibleImpl::GetNameRaw()
1161 {
1162   auto self = Toolkit::TextLabel::DownCast(Self());
1163   return self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1164 }
1165
1166 Property::Index TextLabel::AccessibleImpl::GetNamePropertyIndex()
1167 {
1168   return Toolkit::TextLabel::Property::TEXT;
1169 }
1170
1171 std::string TextLabel::AccessibleImpl::GetText(size_t startOffset, size_t endOffset)
1172 {
1173   if(endOffset <= startOffset)
1174   {
1175     return {};
1176   }
1177
1178   auto self = Toolkit::TextLabel::DownCast(Self());
1179   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1180
1181   if(startOffset > text.size() || endOffset > text.size())
1182   {
1183     return {};
1184   }
1185
1186   return text.substr(startOffset, endOffset - startOffset);
1187 }
1188
1189 size_t TextLabel::AccessibleImpl::GetCharacterCount()
1190 {
1191   auto self = Toolkit::TextLabel::DownCast(Self());
1192   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1193
1194   return text.size();
1195 }
1196
1197 size_t TextLabel::AccessibleImpl::GetCursorOffset()
1198 {
1199   return {};
1200 }
1201
1202 bool TextLabel::AccessibleImpl::SetCursorOffset(size_t offset)
1203 {
1204   return {};
1205 }
1206
1207 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetTextAtOffset(size_t offset, Dali::Accessibility::TextBoundary boundary)
1208 {
1209   auto self     = Toolkit::TextLabel::DownCast(Self());
1210   auto text     = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1211   auto textSize = text.size();
1212
1213   auto range = Dali::Accessibility::Range{};
1214
1215   switch(boundary)
1216   {
1217     case Dali::Accessibility::TextBoundary::CHARACTER:
1218     {
1219       if(offset < textSize)
1220       {
1221         range.content     = text[offset];
1222         range.startOffset = offset;
1223         range.endOffset   = offset + 1;
1224       }
1225       break;
1226     }
1227     case Dali::Accessibility::TextBoundary::WORD:
1228     case Dali::Accessibility::TextBoundary::LINE:
1229     {
1230       auto textString = text.c_str();
1231       auto breaks     = std::vector<char>(textSize, 0);
1232
1233       if(boundary == Dali::Accessibility::TextBoundary::WORD)
1234       {
1235         Accessibility::Accessible::FindWordSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1236       }
1237       else
1238       {
1239         Accessibility::Accessible::FindLineSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1240       }
1241
1242       auto index   = 0u;
1243       auto counter = 0u;
1244       while(index < textSize && counter <= offset)
1245       {
1246         auto start = index;
1247         if(breaks[index])
1248         {
1249           while(breaks[index])
1250           {
1251             index++;
1252           }
1253           counter++;
1254         }
1255         else
1256         {
1257           if(boundary == Dali::Accessibility::TextBoundary::WORD)
1258           {
1259             index++;
1260           }
1261           if(boundary == Dali::Accessibility::TextBoundary::LINE)
1262           {
1263             counter++;
1264           }
1265         }
1266
1267         if((counter > 0) && ((counter - 1) == offset))
1268         {
1269           range.content     = text.substr(start, index - start + 1);
1270           range.startOffset = start;
1271           range.endOffset   = index + 1;
1272         }
1273
1274         if(boundary == Dali::Accessibility::TextBoundary::LINE)
1275         {
1276           index++;
1277         }
1278       }
1279       break;
1280     }
1281     case Dali::Accessibility::TextBoundary::SENTENCE:
1282     {
1283       /* not supported by default */
1284       break;
1285     }
1286     case Dali::Accessibility::TextBoundary::PARAGRAPH:
1287     {
1288       /* Paragraph is not supported by libunibreak library */
1289       break;
1290     }
1291     default:
1292       break;
1293   }
1294
1295   return range;
1296 }
1297
1298 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetRangeOfSelection(size_t selectionIndex)
1299 {
1300   // Since DALi supports only one selection indexes higher than 0 are ignored
1301   if(selectionIndex > 0)
1302   {
1303     return {};
1304   }
1305
1306   auto        self       = Toolkit::TextLabel::DownCast(Self());
1307   auto        controller = Dali::Toolkit::GetImpl(self).GetTextController();
1308   std::string value{};
1309   controller->RetrieveSelection(value);
1310   auto indices = controller->GetSelectionIndexes();
1311
1312   return {static_cast<size_t>(indices.first), static_cast<size_t>(indices.second), value};
1313 }
1314
1315 bool TextLabel::AccessibleImpl::RemoveSelection(size_t selectionIndex)
1316 {
1317   // Since DALi supports only one selection indexes higher than 0 are ignored
1318   if(selectionIndex > 0)
1319   {
1320     return false;
1321   }
1322
1323   auto self = Toolkit::TextLabel::DownCast(Self());
1324   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(0, 0);
1325   return true;
1326 }
1327
1328 bool TextLabel::AccessibleImpl::SetRangeOfSelection(size_t selectionIndex, size_t startOffset, size_t endOffset)
1329 {
1330   // Since DALi supports only one selection indexes higher than 0 are ignored
1331   if(selectionIndex > 0)
1332   {
1333     return false;
1334   }
1335
1336   auto self = Toolkit::TextLabel::DownCast(Self());
1337   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(startOffset, endOffset);
1338   return true;
1339 }
1340
1341 int32_t TextLabel::AccessibleImpl::GetLinkCount() const
1342 {
1343   auto self = Toolkit::TextLabel::DownCast(Self());
1344   return Dali::Toolkit::GetImpl(self).mAnchorActors.size();
1345 }
1346
1347 Accessibility::Hyperlink* TextLabel::AccessibleImpl::GetLink(int32_t linkIndex) const
1348 {
1349   if(linkIndex < 0 || linkIndex >= GetLinkCount())
1350   {
1351     return nullptr;
1352   }
1353   auto self        = Toolkit::TextLabel::DownCast(Self());
1354   auto anchorActor = Dali::Toolkit::GetImpl(self).mAnchorActors[linkIndex];
1355   return dynamic_cast<Accessibility::Hyperlink*>(Dali::Accessibility::Accessible::Get(anchorActor));
1356 }
1357
1358 int32_t TextLabel::AccessibleImpl::GetLinkIndex(int32_t characterOffset) const
1359 {
1360   auto self       = Toolkit::TextLabel::DownCast(Self());
1361   auto controller = Dali::Toolkit::GetImpl(self).GetTextController();
1362   return controller->GetAnchorIndex(static_cast<size_t>(characterOffset));
1363 }
1364
1365 } // namespace Internal
1366
1367 } // namespace Toolkit
1368
1369 } // namespace Dali