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 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "relativeLineSize",             FLOAT,   RELATIVE_LINE_SIZE             )
 144
 145 DALI_ANIMATABLE_PROPERTY_REGISTRATION_WITH_DEFAULT(Toolkit, TextLabel, "textColor",      Color::BLACK,     TEXT_COLOR   )
 146 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorRed",   TEXT_COLOR_RED,   TEXT_COLOR, 0)
 147 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorGreen", TEXT_COLOR_GREEN, TEXT_COLOR, 1)
 148 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorBlue",  TEXT_COLOR_BLUE,  TEXT_COLOR, 2)
 149 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorAlpha", TEXT_COLOR_ALPHA, TEXT_COLOR, 3)
 150
 151 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "anchorClicked", SIGNAL_ANCHOR_CLICKED)
 152 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "textFitChanged", SIGNAL_TEXT_FIT_CHANGED)
 153
 154 DALI_TYPE_REGISTRATION_END()
 155 // clang-format on
 156
 157 /// Parses the property map for the TEXT_FIT property
 158 void ParseTextFitProperty(Text::ControllerPtr& controller, const Property::Map* propertiesMap)
 159 {
 160   if(propertiesMap && !propertiesMap->Empty())
 161   {
 162     bool                     enabled      = false;
 163     float                    minSize      = 0.f;
 164     float                    maxSize      = 0.f;
 165     float                    stepSize     = 0.f;
 166     bool                     isMinSizeSet = false, isMaxSizeSet = false, isStepSizeSet = false;
 167     Controller::FontSizeType type = Controller::FontSizeType::POINT_SIZE;
 168
 169     const unsigned int numberOfItems = propertiesMap->Count();
 170
 171     // Parses and applies
 172     for(unsigned int index = 0u; index < numberOfItems; ++index)
 173     {
 174       const KeyValuePair& valueGet = propertiesMap->GetKeyValue(index);
 175
 176       if((Controller::TextFitInfo::Property::TEXT_FIT_ENABLE == valueGet.first.indexKey) || (TEXT_FIT_ENABLE_KEY == valueGet.first.stringKey))
 177       {
 178         /// Enable key.
 179         enabled = valueGet.second.Get<bool>();
 180       }
 181       else if((Controller::TextFitInfo::Property::TEXT_FIT_MIN_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MIN_SIZE_KEY == valueGet.first.stringKey))
 182       {
 183         /// min size.
 184         minSize      = valueGet.second.Get<float>();
 185         isMinSizeSet = true;
 186       }
 187       else if((Controller::TextFitInfo::Property::TEXT_FIT_MAX_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MAX_SIZE_KEY == valueGet.first.stringKey))
 188       {
 189         /// max size.
 190         maxSize      = valueGet.second.Get<float>();
 191         isMaxSizeSet = true;
 192       }
 193       else if((Controller::TextFitInfo::Property::TEXT_FIT_STEP_SIZE == valueGet.first.indexKey) || (TEXT_FIT_STEP_SIZE_KEY == valueGet.first.stringKey))
 194       {
 195         /// step size.
 196         stepSize      = valueGet.second.Get<float>();
 197         isStepSizeSet = true;
 198       }
 199       else if((Controller::TextFitInfo::Property::TEXT_FIT_FONT_SIZE_TYPE == valueGet.first.indexKey) || (TEXT_FIT_FONT_SIZE_TYPE_KEY == valueGet.first.stringKey))
 200       {
 201         if("pixelSize" == valueGet.second.Get<std::string>())
 202         {
 203           type = Controller::FontSizeType::PIXEL_SIZE;
 204         }
 205       }
 206     }
 207
 208     controller->SetTextFitEnabled(enabled);
 209     if(isMinSizeSet)
 210     {
 211       controller->SetTextFitMinSize(minSize, type);
 212     }
 213     if(isMaxSizeSet)
 214     {
 215       controller->SetTextFitMaxSize(maxSize, type);
 216     }
 217     if(isStepSizeSet)
 218     {
 219       controller->SetTextFitStepSize(stepSize, type);
 220     }
 221   }
 222 }
 223
 224 } // namespace
 225
 226 Toolkit::TextLabel TextLabel::New(ControlBehaviour additionalBehaviour)
 227 {
 228   // Create the implementation, temporarily owned by this handle on stack
 229   IntrusivePtr<TextLabel> impl = new TextLabel(additionalBehaviour);
 230
 231   // Pass ownership to CustomActor handle
 232   Toolkit::TextLabel handle(*impl);
 233
 234   // Second-phase init of the implementation
 235   // This can only be done after the CustomActor connection has been made...
 236   impl->Initialize();
 237
 238   return handle;
 239 }
 240
 241 void TextLabel::SetProperty(BaseObject* object, Property::Index index, const Property::Value& value)
 242 {
 243   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 244
 245   if(label)
 246   {
 247     TextLabel& impl(GetImpl(label));
 248     DALI_ASSERT_ALWAYS(impl.mController && "No text contoller");
 249
 250     switch(index)
 251     {
 252       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 253       {
 254         int backend = value.Get<int>();
 255
 256 #ifndef ENABLE_VECTOR_BASED_TEXT_RENDERING
 257         if(DevelText::RENDERING_VECTOR_BASED == backend)
 258         {
 259           backend = TextAbstraction::BITMAP_GLYPH; // Fallback to bitmap-based rendering
 260         }
 261 #endif
 262         if(impl.mRenderingBackend != backend)
 263         {
 264           impl.mRenderingBackend = backend;
 265           impl.mTextUpdateNeeded = true;
 266
 267           // When using the vector-based rendering, the size of the GLyphs are different
 268           TextAbstraction::GlyphType glyphType = (DevelText::RENDERING_VECTOR_BASED == impl.mRenderingBackend) ? TextAbstraction::VECTOR_GLYPH : TextAbstraction::BITMAP_GLYPH;
 269           impl.mController->SetGlyphType(glyphType);
 270         }
 271         break;
 272       }
 273       case Toolkit::TextLabel::Property::TEXT:
 274       {
 275         impl.mController->SetText(value.Get<std::string>());
 276
 277         if(impl.mController->HasAnchors())
 278         {
 279           // Forward input events to controller
 280           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 281         }
 282         else
 283         {
 284           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 285         }
 286
 287         break;
 288       }
 289       case Toolkit::TextLabel::Property::FONT_FAMILY:
 290       {
 291         const std::string& fontFamily = value.Get<std::string>();
 292
 293         DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::SetProperty Property::FONT_FAMILY newFont(%s)\n", fontFamily.c_str());
 294         impl.mController->SetDefaultFontFamily(fontFamily);
 295         break;
 296       }
 297       case Toolkit::TextLabel::Property::FONT_STYLE:
 298       {
 299         SetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 300         break;
 301       }
 302       case Toolkit::TextLabel::Property::POINT_SIZE:
 303       {
 304         const float pointSize = value.Get<float>();
 305
 306         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE), pointSize))
 307         {
 308           impl.mController->SetDefaultFontSize(pointSize, Text::Controller::POINT_SIZE);
 309         }
 310         break;
 311       }
 312       case Toolkit::TextLabel::Property::MULTI_LINE:
 313       {
 314         impl.mController->SetMultiLineEnabled(value.Get<bool>());
 315         break;
 316       }
 317       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 318       {
 319         Text::HorizontalAlignment::Type alignment(static_cast<Text::HorizontalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 320         if(Text::GetHorizontalAlignmentEnumeration(value, alignment))
 321         {
 322           impl.mController->SetHorizontalAlignment(alignment);
 323         }
 324         break;
 325       }
 326       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 327       {
 328         Toolkit::Text::VerticalAlignment::Type alignment(static_cast<Text::VerticalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 329         if(Text::GetVerticalAlignmentEnumeration(value, alignment))
 330         {
 331           impl.mController->SetVerticalAlignment(alignment);
 332         }
 333         break;
 334       }
 335       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 336       {
 337         const bool enableMarkup = value.Get<bool>();
 338         impl.mController->SetMarkupProcessorEnabled(enableMarkup);
 339
 340         if(impl.mController->HasAnchors())
 341         {
 342           // Forward input events to controller
 343           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 344         }
 345         else
 346         {
 347           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 348         }
 349         break;
 350       }
 351       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 352       {
 353         const bool enableAutoScroll = value.Get<bool>();
 354         // If request to auto scroll is the same as current state then do nothing.
 355         if(enableAutoScroll != impl.mController->IsAutoScrollEnabled())
 356         {
 357           // If request is disable (false) and auto scrolling is enabled then need to stop it
 358           if(enableAutoScroll == false)
 359           {
 360             if(impl.mTextScroller)
 361             {
 362               impl.mTextScroller->StopScrolling();
 363             }
 364           }
 365           // If request is enable (true) then start autoscroll as not already running
 366           else
 367           {
 368             impl.mController->SetAutoScrollEnabled(enableAutoScroll);
 369           }
 370         }
 371         break;
 372       }
 373       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 374       {
 375         Text::TextScrollerPtr                        textScroller = impl.GetTextScroller();
 376         Toolkit::TextLabel::AutoScrollStopMode::Type stopMode     = textScroller->GetStopMode();
 377         if(Scripting::GetEnumerationProperty<Toolkit::TextLabel::AutoScrollStopMode::Type>(value,
 378                                                                                            AUTO_SCROLL_STOP_MODE_TABLE,
 379                                                                                            AUTO_SCROLL_STOP_MODE_TABLE_COUNT,
 380                                                                                            stopMode))
 381         {
 382           textScroller->SetStopMode(stopMode);
 383         }
 384         break;
 385       }
 386       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 387       {
 388         impl.GetTextScroller()->SetSpeed(value.Get<int>());
 389         break;
 390       }
 391       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 392       {
 393         impl.GetTextScroller()->SetLoopCount(value.Get<int>());
 394         break;
 395       }
 396       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 397       {
 398         impl.GetTextScroller()->SetLoopDelay(value.Get<float>());
 399         break;
 400       }
 401       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 402       {
 403         impl.GetTextScroller()->SetGap(value.Get<float>());
 404         break;
 405       }
 406       case Toolkit::TextLabel::Property::LINE_SPACING:
 407       {
 408         const float lineSpacing = value.Get<float>();
 409         impl.mTextUpdateNeeded  = impl.mController->SetDefaultLineSpacing(lineSpacing) || impl.mTextUpdateNeeded;
 410         break;
 411       }
 412       case Toolkit::TextLabel::Property::UNDERLINE:
 413       {
 414         impl.mTextUpdateNeeded = SetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 415         break;
 416       }
 417       case Toolkit::TextLabel::Property::SHADOW:
 418       {
 419         impl.mTextUpdateNeeded = SetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 420         break;
 421       }
 422       case Toolkit::TextLabel::Property::EMBOSS:
 423       {
 424         impl.mTextUpdateNeeded = SetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 425         break;
 426       }
 427       case Toolkit::TextLabel::Property::OUTLINE:
 428       {
 429         impl.mTextUpdateNeeded = SetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 430         break;
 431       }
 432       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 433       {
 434         const float pixelSize = value.Get<float>();
 435         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p PIXEL_SIZE %f\n", impl.mController.Get(), pixelSize);
 436
 437         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE), pixelSize))
 438         {
 439           impl.mController->SetDefaultFontSize(pixelSize, Text::Controller::PIXEL_SIZE);
 440         }
 441         break;
 442       }
 443       case Toolkit::TextLabel::Property::ELLIPSIS:
 444       {
 445         const bool ellipsis = value.Get<bool>();
 446         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p ELLIPSIS %d\n", impl.mController.Get(), ellipsis);
 447
 448         impl.mController->SetTextElideEnabled(ellipsis);
 449         break;
 450       }
 451       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 452       {
 453         Text::LineWrap::Mode lineWrapMode(static_cast<Text::LineWrap::Mode>(-1)); // Set to invalid value to ensure a valid mode does get set
 454         if(GetLineWrapModeEnumeration(value, lineWrapMode))
 455         {
 456           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p LineWrap::MODE %d\n", impl.mController.Get(), lineWrapMode);
 457           impl.mController->SetLineWrapMode(lineWrapMode);
 458         }
 459         break;
 460       }
 461       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 462       {
 463         if(impl.mController->GetTextModel())
 464         {
 465           DevelText::VerticalLineAlignment::Type alignment = static_cast<DevelText::VerticalLineAlignment::Type>(value.Get<int>());
 466
 467           impl.mController->SetVerticalLineAlignment(alignment);
 468
 469           // Property doesn't affect the layout, only Visual must be updated
 470           TextVisual::EnableRendererUpdate(impl.mVisual);
 471
 472           // No need to trigger full re-layout. Instead call UpdateRenderer() directly
 473           TextVisual::UpdateRenderer(impl.mVisual);
 474         }
 475         break;
 476       }
 477       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 478       {
 479         impl.mTextUpdateNeeded = SetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 480         break;
 481       }
 482       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 483       {
 484         impl.mController->SetIgnoreSpacesAfterText(value.Get<bool>());
 485         break;
 486       }
 487       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 488       {
 489         impl.mController->SetMatchLayoutDirection(value.Get<bool>() ? DevelText::MatchLayoutDirection::LOCALE : DevelText::MatchLayoutDirection::CONTENTS);
 490         break;
 491       }
 492       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 493       {
 494         ParseTextFitProperty(impl.mController, value.GetMap());
 495         impl.mController->SetTextFitChanged(true);
 496         break;
 497       }
 498       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 499       {
 500         const float lineSize   = value.Get<float>();
 501         impl.mTextUpdateNeeded = impl.mController->SetDefaultLineSize(lineSize) || impl.mTextUpdateNeeded;
 502         break;
 503       }
 504       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 505       {
 506         const float scale = value.Get<float>();
 507         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p FONT_SIZE_SCALE %f\n", impl.mController.Get(), scale);
 508
 509         if(!Equals(impl.mController->GetFontSizeScale(), scale))
 510         {
 511           impl.mController->SetFontSizeScale(scale);
 512         }
 513         break;
 514       }
 515       case Toolkit::DevelTextLabel::Property::ENABLE_FONT_SIZE_SCALE:
 516       {
 517         const bool enableFontSizeScale = value.Get<bool>();
 518         if(!Equals(impl.mController->IsFontSizeScaleEnabled(), enableFontSizeScale))
 519         {
 520           impl.mController->SetFontSizeScaleEnabled(enableFontSizeScale);
 521         }
 522         break;
 523       }
 524       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 525       {
 526         DevelText::EllipsisPosition::Type ellipsisPositionType(static_cast<DevelText::EllipsisPosition::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 527         if(GetEllipsisPositionTypeEnumeration(value, ellipsisPositionType))
 528         {
 529           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p EllipsisPosition::Type %d\n", impl.mController.Get(), ellipsisPositionType);
 530           impl.mController->SetEllipsisPosition(ellipsisPositionType);
 531         }
 532         break;
 533       }
 534       case Toolkit::DevelTextLabel::Property::STRIKETHROUGH:
 535       {
 536         impl.mTextUpdateNeeded = SetStrikethroughProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 537         break;
 538       }
 539       case Toolkit::DevelTextLabel::Property::CHARACTER_SPACING:
 540       {
 541         const float characterSpacing = value.Get<float>();
 542         impl.mController->SetCharacterSpacing(characterSpacing);
 543         break;
 544       }
 545       case Toolkit::DevelTextLabel::Property::RELATIVE_LINE_SIZE:
 546       {
 547         const float relativeLineSize = value.Get<float>();
 548         DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel %p RELATIVE_LINE_SIZE %f\n", impl.mController.Get(), relativeLineSize);
 549
 550         impl.mController->SetRelativeLineSize(relativeLineSize);
 551         break;
 552       }
 553     }
 554
 555     // Request relayout when text update is needed. It's necessary to call it
 556     // as changing the property not via UI interaction brings no effect if only
 557     // the mTextUpdateNeeded is changed.
 558     if(impl.mTextUpdateNeeded)
 559     {
 560       // need to request relayout as size of text may have changed
 561       impl.RequestTextRelayout();
 562     }
 563   }
 564 }
 565
 566 Text::ControllerPtr TextLabel::GetTextController()
 567 {
 568   return mController;
 569 }
 570
 571 Property::Value TextLabel::GetProperty(BaseObject* object, Property::Index index)
 572 {
 573   Property::Value value;
 574
 575   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 576
 577   if(label)
 578   {
 579     TextLabel& impl(GetImpl(label));
 580     DALI_ASSERT_DEBUG(impl.mController && "No text contoller");
 581
 582     switch(index)
 583     {
 584       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 585       {
 586         value = impl.mRenderingBackend;
 587         break;
 588       }
 589       case Toolkit::TextLabel::Property::TEXT:
 590       {
 591         std::string text;
 592         impl.mController->GetText(text);
 593         value = text;
 594         break;
 595       }
 596       case Toolkit::TextLabel::Property::FONT_FAMILY:
 597       {
 598         value = impl.mController->GetDefaultFontFamily();
 599         break;
 600       }
 601       case Toolkit::TextLabel::Property::FONT_STYLE:
 602       {
 603         GetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 604         break;
 605       }
 606       case Toolkit::TextLabel::Property::POINT_SIZE:
 607       {
 608         value = impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE);
 609         break;
 610       }
 611       case Toolkit::TextLabel::Property::MULTI_LINE:
 612       {
 613         value = impl.mController->IsMultiLineEnabled();
 614         break;
 615       }
 616       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 617       {
 618         const char* name = Text::GetHorizontalAlignmentString(impl.mController->GetHorizontalAlignment());
 619
 620         if(name)
 621         {
 622           value = std::string(name);
 623         }
 624         break;
 625       }
 626       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 627       {
 628         const char* name = Text::GetVerticalAlignmentString(impl.mController->GetVerticalAlignment());
 629         if(name)
 630         {
 631           value = std::string(name);
 632         }
 633         break;
 634       }
 635       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 636       {
 637         value = impl.mController->IsMarkupProcessorEnabled();
 638         break;
 639       }
 640       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 641       {
 642         value = impl.mController->IsAutoScrollEnabled();
 643         break;
 644       }
 645       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 646       {
 647         if(impl.mTextScroller)
 648         {
 649           const char* mode = Scripting::GetEnumerationName<Toolkit::TextLabel::AutoScrollStopMode::Type>(impl.mTextScroller->GetStopMode(),
 650                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE,
 651                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE_COUNT);
 652           if(mode)
 653           {
 654             value = std::string(mode);
 655           }
 656         }
 657         break;
 658       }
 659       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 660       {
 661         if(impl.mTextScroller)
 662         {
 663           value = impl.mTextScroller->GetSpeed();
 664         }
 665         break;
 666       }
 667       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 668       {
 669         if(impl.mTextScroller)
 670         {
 671           value = impl.mTextScroller->GetLoopCount();
 672         }
 673         break;
 674       }
 675       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 676       {
 677         if(impl.mTextScroller)
 678         {
 679           value = impl.mTextScroller->GetLoopDelay();
 680         }
 681         break;
 682       }
 683       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 684       {
 685         if(impl.mTextScroller)
 686         {
 687           value = impl.mTextScroller->GetGap();
 688         }
 689         break;
 690       }
 691       case Toolkit::TextLabel::Property::LINE_SPACING:
 692       {
 693         value = impl.mController->GetDefaultLineSpacing();
 694         break;
 695       }
 696       case Toolkit::TextLabel::Property::UNDERLINE:
 697       {
 698         GetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 699         break;
 700       }
 701       case Toolkit::TextLabel::Property::SHADOW:
 702       {
 703         GetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 704         break;
 705       }
 706       case Toolkit::TextLabel::Property::EMBOSS:
 707       {
 708         GetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 709         break;
 710       }
 711       case Toolkit::TextLabel::Property::OUTLINE:
 712       {
 713         GetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 714         break;
 715       }
 716       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 717       {
 718         value = impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE);
 719         break;
 720       }
 721       case Toolkit::TextLabel::Property::ELLIPSIS:
 722       {
 723         value = impl.mController->IsTextElideEnabled();
 724         break;
 725       }
 726       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 727       {
 728         value = impl.mController->GetLineWrapMode();
 729         break;
 730       }
 731       case Toolkit::TextLabel::Property::LINE_COUNT:
 732       {
 733         float width = label.GetProperty(Actor::Property::SIZE_WIDTH).Get<float>();
 734         value       = impl.mController->GetLineCount(width);
 735         break;
 736       }
 737       case Toolkit::DevelTextLabel::Property::TEXT_DIRECTION:
 738       {
 739         value = impl.mController->GetTextDirection();
 740         break;
 741       }
 742       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 743       {
 744         value = impl.mController->GetVerticalLineAlignment();
 745         break;
 746       }
 747       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 748       {
 749         GetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 750         break;
 751       }
 752       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 753       {
 754         value = impl.mController->IsIgnoreSpacesAfterText();
 755         break;
 756       }
 757       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 758       {
 759         value = impl.mController->GetMatchLayoutDirection() != DevelText::MatchLayoutDirection::CONTENTS;
 760         break;
 761       }
 762       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 763       {
 764         const bool  enabled   = impl.mController->IsTextFitEnabled();
 765         const float minSize   = impl.mController->GetTextFitMinSize();
 766         const float maxSize   = impl.mController->GetTextFitMaxSize();
 767         const float stepSize  = impl.mController->GetTextFitStepSize();
 768         const float pointSize = impl.mController->GetTextFitPointSize();
 769
 770         Property::Map map;
 771         map.Insert(TEXT_FIT_ENABLE_KEY, enabled);
 772         map.Insert(TEXT_FIT_MIN_SIZE_KEY, minSize);
 773         map.Insert(TEXT_FIT_MAX_SIZE_KEY, maxSize);
 774         map.Insert(TEXT_FIT_STEP_SIZE_KEY, stepSize);
 775         map.Insert(TEXT_FIT_FONT_SIZE_KEY, pointSize);
 776         map.Insert(TEXT_FIT_FONT_SIZE_TYPE_KEY, "pointSize");
 777
 778         value = map;
 779         break;
 780       }
 781       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 782       {
 783         value = impl.mController->GetDefaultLineSize();
 784         break;
 785       }
 786       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 787       {
 788         value = impl.mController->GetFontSizeScale();
 789         break;
 790       }
 791       case Toolkit::DevelTextLabel::Property::ENABLE_FONT_SIZE_SCALE:
 792       {
 793         value = impl.mController->IsFontSizeScaleEnabled();
 794         break;
 795       }
 796       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 797       {
 798         value = impl.mController->GetEllipsisPosition();
 799         break;
 800       }
 801       case Toolkit::DevelTextLabel::Property::STRIKETHROUGH:
 802       {
 803         GetStrikethroughProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 804         break;
 805       }
 806       case Toolkit::DevelTextLabel::Property::CHARACTER_SPACING:
 807       {
 808         value = impl.mController->GetCharacterSpacing();
 809         break;
 810       }
 811       case Toolkit::DevelTextLabel::Property::RELATIVE_LINE_SIZE:
 812       {
 813         value = impl.mController->GetRelativeLineSize();
 814         break;
 815       }
 816     }
 817   }
 818
 819   return value;
 820 }
 821
 822 bool TextLabel::DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor)
 823 {
 824   Dali::BaseHandle handle(object);
 825
 826   bool               connected(true);
 827   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(handle);
 828
 829   if(0 == strcmp(signalName.c_str(), SIGNAL_ANCHOR_CLICKED))
 830   {
 831     if(label)
 832     {
 833       Internal::TextLabel& labelImpl(GetImpl(label));
 834       labelImpl.AnchorClickedSignal().Connect(tracker, functor);
 835     }
 836   }
 837   else if(0 == strcmp(signalName.c_str(), SIGNAL_TEXT_FIT_CHANGED))
 838   {
 839     if(label)
 840     {
 841       Internal::TextLabel& labelImpl(GetImpl(label));
 842       labelImpl.TextFitChangedSignal().Connect(tracker, functor);
 843     }
 844   }
 845   else
 846   {
 847     // signalName does not match any signal
 848     connected = false;
 849   }
 850
 851   return connected;
 852 }
 853
 854 DevelTextLabel::AnchorClickedSignalType& TextLabel::AnchorClickedSignal()
 855 {
 856   return mAnchorClickedSignal;
 857 }
 858
 859 DevelTextLabel::TextFitChangedSignalType& TextLabel::TextFitChangedSignal()
 860 {
 861   return mTextFitChangedSignal;
 862 }
 863
 864 void TextLabel::OnInitialize()
 865 {
 866   Actor self = Self();
 867
 868   Property::Map propertyMap;
 869   propertyMap.Add(Toolkit::Visual::Property::TYPE, Toolkit::Visual::TEXT);
 870
 871   mVisual = Toolkit::VisualFactory::Get().CreateVisual(propertyMap);
 872   DevelControl::RegisterVisual(*this, Toolkit::TextLabel::Property::TEXT, mVisual);
 873
 874   TextVisual::SetAnimatableTextColorProperty(mVisual, Toolkit::TextLabel::Property::TEXT_COLOR);
 875
 876   mController = TextVisual::GetController(mVisual);
 877   DALI_ASSERT_DEBUG(mController && "Invalid Text Controller")
 878
 879   mController->SetControlInterface(this);
 880   mController->SetAnchorControlInterface(this);
 881
 882   // Use height-for-width negotiation by default
 883   self.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
 884   self.SetResizePolicy(ResizePolicy::DIMENSION_DEPENDENCY, Dimension::HEIGHT);
 885
 886   // Enable highlightability
 887   self.SetProperty(Toolkit::DevelControl::Property::ACCESSIBILITY_HIGHLIGHTABLE, true);
 888
 889   // Enable the text ellipsis.
 890   mController->SetTextElideEnabled(true); // If false then text larger than control will overflow
 891
 892   // Sets layoutDirection value
 893   Dali::Stage                 stage           = Dali::Stage::GetCurrent();
 894   Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(stage.GetRootLayer().GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 895   mController->SetLayoutDirection(layoutDirection);
 896
 897   self.LayoutDirectionChangedSignal().Connect(this, &TextLabel::OnLayoutDirectionChanged);
 898
 899   Layout::Engine& engine = mController->GetLayoutEngine();
 900   engine.SetCursorWidth(0u); // Do not layout space for the cursor.
 901
 902   DevelControl::SetAccessibilityConstructor(self, [](Dali::Actor actor) {
 903     return std::unique_ptr<Dali::Accessibility::Accessible>(
 904       new AccessibleImpl(actor, Dali::Accessibility::Role::LABEL));
 905   });
 906
 907   Accessibility::Bridge::EnabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 908   Accessibility::Bridge::DisabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 909 }
 910
 911 void TextLabel::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 912 {
 913   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnStyleChange\n");
 914
 915   switch(change)
 916   {
 917     case StyleChange::DEFAULT_FONT_CHANGE:
 918     {
 919       // Property system did not set the font so should update it.
 920       const std::string& newFont = GetImpl(styleManager).GetDefaultFontFamily();
 921       DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnStyleChange StyleChange::DEFAULT_FONT_CHANGE newFont(%s)\n", newFont.c_str());
 922       mController->UpdateAfterFontChange(newFont);
 923       RelayoutRequest();
 924       break;
 925     }
 926     case StyleChange::DEFAULT_FONT_SIZE_CHANGE:
 927     {
 928       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 929       RelayoutRequest();
 930       break;
 931     }
 932     case StyleChange::THEME_CHANGE:
 933     {
 934       // Nothing to do, let control base class handle this
 935       break;
 936     }
 937   }
 938
 939   // Up call to Control
 940   Control::OnStyleChange(styleManager, change);
 941 }
 942
 943 void TextLabel::OnTap(const TapGesture& gesture)
 944 {
 945   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnTap %p\n", mController.Get());
 946
 947   // Deliver the tap before the focus event to controller; this allows us to detect when focus is gained due to tap-gestures
 948   Extents padding;
 949   padding                   = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 950   const Vector2& localPoint = gesture.GetLocalPoint();
 951   mController->AnchorEvent(localPoint.x - padding.start, localPoint.y - padding.top);
 952 }
 953
 954 void TextLabel::AnchorClicked(const std::string& href)
 955 {
 956   Dali::Toolkit::TextLabel handle(GetOwner());
 957   mAnchorClickedSignal.Emit(handle, href.c_str(), href.length());
 958 }
 959
 960 Vector3 TextLabel::GetNaturalSize()
 961 {
 962   Extents padding;
 963   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 964
 965   Vector3 naturalSize = mController->GetNaturalSize();
 966   naturalSize.width += (padding.start + padding.end);
 967   naturalSize.height += (padding.top + padding.bottom);
 968
 969   return naturalSize;
 970 }
 971
 972 float TextLabel::GetHeightForWidth(float width)
 973 {
 974   Extents padding;
 975   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 976
 977   return mController->GetHeightForWidth(width) + padding.top + padding.bottom;
 978 }
 979
 980 void TextLabel::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 981 {
 982   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnPropertySet index[%d]\n", index);
 983
 984   switch(index)
 985   {
 986     case Toolkit::TextLabel::Property::TEXT_COLOR:
 987     {
 988       const Vector4& textColor = propertyValue.Get<Vector4>();
 989       if(mController->GetDefaultColor() != textColor)
 990       {
 991         mController->SetDefaultColor(textColor);
 992         mTextUpdateNeeded = true;
 993       }
 994       break;
 995     }
 996     case Toolkit::TextLabel::Property::TEXT:
 997     case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 998     {
 999       CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
1000       break;
1001     }
1002     default:
1003     {
1004       Control::OnPropertySet(index, propertyValue); // up call to control for non-handled properties
1005       break;
1006     }
1007   }
1008 }
1009
1010 void TextLabel::OnRelayout(const Vector2& size, RelayoutContainer& container)
1011 {
1012   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout\n");
1013
1014   Actor self = Self();
1015
1016   Extents padding;
1017   padding = self.GetProperty<Extents>(Toolkit::Control::Property::PADDING);
1018
1019   Vector2 contentSize(size.x - (padding.start + padding.end), size.y - (padding.top + padding.bottom));
1020
1021   if(mController->IsTextFitEnabled())
1022   {
1023     mController->FitPointSizeforLayout(contentSize);
1024     mController->SetTextFitContentSize(contentSize);
1025   }
1026
1027   // Support Right-To-Left
1028   Dali::LayoutDirection::Type layoutDirection = mController->GetLayoutDirection(self);
1029
1030   const Text::Controller::UpdateTextType updateTextType = mController->Relayout(contentSize, layoutDirection);
1031
1032   if((Text::Controller::NONE_UPDATED != (Text::Controller::MODEL_UPDATED & updateTextType)) || mTextUpdateNeeded)
1033   {
1034     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout IsAutoScrollEnabled[%s] [%p]\n", (mController->IsAutoScrollEnabled()) ? "true" : "false", this);
1035
1036     // Update the visual
1037     TextVisual::EnableRendererUpdate(mVisual);
1038
1039     // Support Right-To-Left of padding
1040     if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
1041     {
1042       std::swap(padding.start, padding.end);
1043     }
1044
1045     // Calculate the size of the visual that can fit the text
1046     Size layoutSize = mController->GetTextModel()->GetLayoutSize();
1047     layoutSize.x    = contentSize.x;
1048
1049     const Vector2& shadowOffset = mController->GetTextModel()->GetShadowOffset();
1050     if(shadowOffset.y > Math::MACHINE_EPSILON_1)
1051     {
1052       layoutSize.y += shadowOffset.y;
1053     }
1054
1055     float outlineWidth = mController->GetTextModel()->GetOutlineWidth();
1056     layoutSize.y += outlineWidth * 2.0f;
1057     layoutSize.y = std::min(layoutSize.y, contentSize.y);
1058
1059     // Calculate the offset for vertical alignment only, as the layout engine will do the horizontal alignment.
1060     Vector2 alignmentOffset;
1061     alignmentOffset.x = 0.0f;
1062     alignmentOffset.y = (contentSize.y - layoutSize.y) * VERTICAL_ALIGNMENT_TABLE[mController->GetVerticalAlignment()];
1063
1064     Property::Map visualTransform;
1065     visualTransform.Add(Toolkit::Visual::Transform::Property::SIZE, layoutSize)
1066       .Add(Toolkit::Visual::Transform::Property::SIZE_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1067       .Add(Toolkit::Visual::Transform::Property::OFFSET, Vector2(padding.start, padding.top) + alignmentOffset)
1068       .Add(Toolkit::Visual::Transform::Property::OFFSET_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1069       .Add(Toolkit::Visual::Transform::Property::ORIGIN, Toolkit::Align::TOP_BEGIN)
1070       .Add(Toolkit::Visual::Transform::Property::ANCHOR_POINT, Toolkit::Align::TOP_BEGIN);
1071     mVisual.SetTransformAndSize(visualTransform, size);
1072
1073     if(mController->IsAutoScrollEnabled())
1074     {
1075       SetUpAutoScrolling();
1076     }
1077
1078     mTextUpdateNeeded = false;
1079   }
1080
1081   if(mController->IsTextFitChanged())
1082   {
1083     EmitTextFitChangedSignal();
1084     mController->SetTextFitChanged(false);
1085   }
1086 }
1087
1088 void TextLabel::RequestTextRelayout()
1089 {
1090   RelayoutRequest();
1091   // Signal that a Relayout may be needed
1092 }
1093
1094 void TextLabel::SetUpAutoScrolling()
1095 {
1096   const Size&                    controlSize     = mController->GetView().GetControlSize();
1097   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.
1098   const Text::CharacterDirection direction       = mController->GetAutoScrollDirection();
1099
1100   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling textNaturalSize[%f,%f] controlSize[%f,%f]\n", textNaturalSize.x, textNaturalSize.y, controlSize.x, controlSize.y);
1101
1102   if(!mTextScroller)
1103   {
1104     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling Creating default TextScoller\n");
1105
1106     // If speed, loopCount or gap not set via property system then will need to create a TextScroller with defaults
1107     mTextScroller = Text::TextScroller::New(*this);
1108   }
1109
1110   // Calculate the actual gap before scrolling wraps.
1111   int     textPadding = std::max(controlSize.x - textNaturalSize.x, 0.0f);
1112   float   wrapGap     = std::max(mTextScroller->GetGap(), textPadding);
1113   Vector2 textureSize = textNaturalSize + Vector2(wrapGap, 0.0f); // Add the gap as a part of the texture
1114
1115   // Create a texture of the text for scrolling
1116   Size      verifiedSize   = textureSize;
1117   const int maxTextureSize = Dali::GetMaxTextureSize();
1118
1119   //if the texture size width exceed maxTextureSize, modify the visual model size and enabled the ellipsis
1120   bool actualellipsis = mController->IsTextElideEnabled();
1121   if(verifiedSize.width > maxTextureSize)
1122   {
1123     verifiedSize.width = maxTextureSize;
1124     if(textNaturalSize.width > maxTextureSize)
1125     {
1126       mController->SetTextElideEnabled(true);
1127     }
1128     GetHeightForWidth(maxTextureSize);
1129     wrapGap = std::max(maxTextureSize - textNaturalSize.width, 0.0f);
1130   }
1131
1132   Text::TypesetterPtr typesetter = Text::Typesetter::New(mController->GetTextModel());
1133
1134   PixelData data    = typesetter->Render(verifiedSize, mController->GetTextDirection(), Text::Typesetter::RENDER_TEXT_AND_STYLES, true, Pixel::RGBA8888); // ignore the horizontal alignment
1135   Texture   texture = Texture::New(Dali::TextureType::TEXTURE_2D,
1136                                  data.GetPixelFormat(),
1137                                  data.GetWidth(),
1138                                  data.GetHeight());
1139   texture.Upload(data);
1140
1141   TextureSet textureSet = TextureSet::New();
1142   textureSet.SetTexture(0u, texture);
1143
1144   // Filter mode needs to be set to linear to produce better quality while scaling.
1145   Sampler sampler = Sampler::New();
1146   sampler.SetFilterMode(FilterMode::LINEAR, FilterMode::LINEAR);
1147   sampler.SetWrapMode(Dali::WrapMode::DEFAULT, Dali::WrapMode::REPEAT, Dali::WrapMode::DEFAULT); // Wrap the texture in the x direction
1148   textureSet.SetSampler(0u, sampler);
1149
1150   // Set parameters for scrolling
1151   Renderer renderer = static_cast<Internal::Visual::Base&>(GetImplementation(mVisual)).GetRenderer();
1152   mTextScroller->SetParameters(Self(), renderer, textureSet, controlSize, verifiedSize, wrapGap, direction, mController->GetHorizontalAlignment(), mController->GetVerticalAlignment());
1153   mController->SetTextElideEnabled(actualellipsis);
1154 }
1155
1156 void TextLabel::ScrollingFinished()
1157 {
1158   // Pure Virtual from TextScroller Interface
1159   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::ScrollingFinished\n");
1160   mController->SetAutoScrollEnabled(false);
1161   RequestTextRelayout();
1162 }
1163
1164 void TextLabel::OnLayoutDirectionChanged(Actor actor, LayoutDirection::Type type)
1165 {
1166   mController->ChangedLayoutDirection();
1167 }
1168
1169 void TextLabel::EmitTextFitChangedSignal()
1170 {
1171   Dali::Toolkit::TextLabel handle(GetOwner());
1172   mTextFitChangedSignal.Emit(handle);
1173 }
1174
1175 void TextLabel::OnAccessibilityStatusChanged()
1176 {
1177   CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
1178 }
1179
1180 TextLabel::TextLabel(ControlBehaviour additionalBehavior)
1181 : Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT | additionalBehavior)),
1182   mRenderingBackend(DEFAULT_RENDERING_BACKEND),
1183   mTextUpdateNeeded(false)
1184 {
1185 }
1186
1187 TextLabel::~TextLabel()
1188 {
1189 }
1190
1191 Vector<Vector2> TextLabel::GetTextSize(const uint32_t startIndex, const uint32_t endIndex) const
1192 {
1193   return mController->GetTextSize(startIndex, endIndex);
1194 }
1195
1196 Vector<Vector2> TextLabel::GetTextPosition(const uint32_t startIndex, const uint32_t endIndex) const
1197 {
1198   return mController->GetTextPosition(startIndex, endIndex);
1199 }
1200
1201 std::string TextLabel::AccessibleImpl::GetNameRaw() const
1202 {
1203   auto self = Toolkit::TextLabel::DownCast(Self());
1204   return self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1205 }
1206
1207 Property::Index TextLabel::AccessibleImpl::GetNamePropertyIndex()
1208 {
1209   return Toolkit::TextLabel::Property::TEXT;
1210 }
1211
1212 std::string TextLabel::AccessibleImpl::GetText(size_t startOffset, size_t endOffset) const
1213 {
1214   if(endOffset <= startOffset)
1215   {
1216     return {};
1217   }
1218
1219   auto self = Toolkit::TextLabel::DownCast(Self());
1220   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1221
1222   if(startOffset > text.size() || endOffset > text.size())
1223   {
1224     return {};
1225   }
1226
1227   return text.substr(startOffset, endOffset - startOffset);
1228 }
1229
1230 size_t TextLabel::AccessibleImpl::GetCharacterCount() const
1231 {
1232   auto self = Toolkit::TextLabel::DownCast(Self());
1233   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1234
1235   return text.size();
1236 }
1237
1238 size_t TextLabel::AccessibleImpl::GetCursorOffset() const
1239 {
1240   return {};
1241 }
1242
1243 bool TextLabel::AccessibleImpl::SetCursorOffset(size_t offset)
1244 {
1245   return {};
1246 }
1247
1248 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetTextAtOffset(size_t offset, Dali::Accessibility::TextBoundary boundary) const
1249 {
1250   auto self     = Toolkit::TextLabel::DownCast(Self());
1251   auto text     = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1252   auto textSize = text.size();
1253
1254   auto range = Dali::Accessibility::Range{};
1255
1256   switch(boundary)
1257   {
1258     case Dali::Accessibility::TextBoundary::CHARACTER:
1259     {
1260       if(offset < textSize)
1261       {
1262         range.content     = text[offset];
1263         range.startOffset = offset;
1264         range.endOffset   = offset + 1;
1265       }
1266       break;
1267     }
1268     case Dali::Accessibility::TextBoundary::WORD:
1269     case Dali::Accessibility::TextBoundary::LINE:
1270     {
1271       auto textString = text.c_str();
1272       auto breaks     = std::vector<char>(textSize, 0);
1273
1274       if(boundary == Dali::Accessibility::TextBoundary::WORD)
1275       {
1276         Accessibility::Accessible::FindWordSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1277       }
1278       else
1279       {
1280         Accessibility::Accessible::FindLineSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1281       }
1282
1283       auto index   = 0u;
1284       auto counter = 0u;
1285       while(index < textSize && counter <= offset)
1286       {
1287         auto start = index;
1288         if(breaks[index])
1289         {
1290           while(breaks[index])
1291           {
1292             index++;
1293           }
1294           counter++;
1295         }
1296         else
1297         {
1298           if(boundary == Dali::Accessibility::TextBoundary::WORD)
1299           {
1300             index++;
1301           }
1302           if(boundary == Dali::Accessibility::TextBoundary::LINE)
1303           {
1304             counter++;
1305           }
1306         }
1307
1308         if((counter > 0) && ((counter - 1) == offset))
1309         {
1310           range.content     = text.substr(start, index - start + 1);
1311           range.startOffset = start;
1312           range.endOffset   = index + 1;
1313         }
1314
1315         if(boundary == Dali::Accessibility::TextBoundary::LINE)
1316         {
1317           index++;
1318         }
1319       }
1320       break;
1321     }
1322     case Dali::Accessibility::TextBoundary::SENTENCE:
1323     {
1324       /* not supported by default */
1325       break;
1326     }
1327     case Dali::Accessibility::TextBoundary::PARAGRAPH:
1328     {
1329       /* Paragraph is not supported by libunibreak library */
1330       break;
1331     }
1332     default:
1333       break;
1334   }
1335
1336   return range;
1337 }
1338
1339 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetRangeOfSelection(size_t selectionIndex) const
1340 {
1341   // Since DALi supports only one selection indexes higher than 0 are ignored
1342   if(selectionIndex > 0)
1343   {
1344     return {};
1345   }
1346
1347   auto        self       = Toolkit::TextLabel::DownCast(Self());
1348   auto        controller = Dali::Toolkit::GetImpl(self).GetTextController();
1349   std::string value{};
1350   controller->RetrieveSelection(value);
1351   auto indices = controller->GetSelectionIndexes();
1352
1353   return {static_cast<size_t>(indices.first), static_cast<size_t>(indices.second), value};
1354 }
1355
1356 bool TextLabel::AccessibleImpl::RemoveSelection(size_t selectionIndex)
1357 {
1358   // Since DALi supports only one selection indexes higher than 0 are ignored
1359   if(selectionIndex > 0)
1360   {
1361     return false;
1362   }
1363
1364   auto self = Toolkit::TextLabel::DownCast(Self());
1365   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(0, 0);
1366   return true;
1367 }
1368
1369 bool TextLabel::AccessibleImpl::SetRangeOfSelection(size_t selectionIndex, size_t startOffset, size_t endOffset)
1370 {
1371   // Since DALi supports only one selection indexes higher than 0 are ignored
1372   if(selectionIndex > 0)
1373   {
1374     return false;
1375   }
1376
1377   auto self = Toolkit::TextLabel::DownCast(Self());
1378   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(startOffset, endOffset);
1379   return true;
1380 }
1381
1382 int32_t TextLabel::AccessibleImpl::GetLinkCount() const
1383 {
1384   auto self = Toolkit::TextLabel::DownCast(Self());
1385   return Dali::Toolkit::GetImpl(self).mAnchorActors.size();
1386 }
1387
1388 Accessibility::Hyperlink* TextLabel::AccessibleImpl::GetLink(int32_t linkIndex) const
1389 {
1390   if(linkIndex < 0 || linkIndex >= GetLinkCount())
1391   {
1392     return nullptr;
1393   }
1394   auto self        = Toolkit::TextLabel::DownCast(Self());
1395   auto anchorActor = Dali::Toolkit::GetImpl(self).mAnchorActors[linkIndex];
1396   return dynamic_cast<Accessibility::Hyperlink*>(Dali::Accessibility::Accessible::Get(anchorActor));
1397 }
1398
1399 int32_t TextLabel::AccessibleImpl::GetLinkIndex(int32_t characterOffset) const
1400 {
1401   auto self       = Toolkit::TextLabel::DownCast(Self());
1402   auto controller = Dali::Toolkit::GetImpl(self).GetTextController();
1403   return controller->GetAnchorIndex(static_cast<size_t>(characterOffset));
1404 }
1405
1406 } // namespace Internal
1407
1408 } // namespace Toolkit
1409
1410 } // namespace Dali