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