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

   1 /*
   2  * Copyright (c) 2021 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali-toolkit/internal/controls/text-controls/text-label-impl.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/devel-api/actors/actor-devel.h>
  23 #include <dali/devel-api/adaptor-framework/image-loading.h>
  24 #include <dali/devel-api/common/stage.h>
  25 #include <dali/devel-api/object/property-helper-devel.h>
  26 #include <dali/integration-api/debug.h>
  27 #include <dali/public-api/common/dali-common.h>
  28 #include <dali/public-api/object/type-registry-helper.h>
  29
  30 // INTERNAL INCLUDES
  31 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  32 #include <dali-toolkit/devel-api/text/rendering-backend.h>
  33 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  34 #include <dali-toolkit/internal/text/property-string-parser.h>
  35 #include <dali-toolkit/internal/text/rendering/text-backend.h>
  36 #include <dali-toolkit/internal/text/text-definitions.h>
  37 #include <dali-toolkit/internal/text/text-effects-style.h>
  38 #include <dali-toolkit/internal/text/text-font-style.h>
  39 #include <dali-toolkit/internal/text/text-view.h>
  40 #include <dali-toolkit/public-api/text/text-enumerations.h>
  41
  42 #include <dali-toolkit/devel-api/controls/control-devel.h>
  43 #include <dali-toolkit/devel-api/visual-factory/visual-base.h>
  44 #include <dali-toolkit/devel-api/visual-factory/visual-factory.h>
  45 #include <dali-toolkit/internal/text/text-enumerations-impl.h>
  46 #include <dali-toolkit/public-api/align-enumerations.h>
  47 #include <dali-toolkit/public-api/visuals/text-visual-properties.h>
  48 #include <dali-toolkit/public-api/visuals/visual-properties.h>
  49
  50 #include <dali-toolkit/devel-api/controls/text-controls/text-label-devel.h>
  51
  52 using namespace Dali::Toolkit::Text;
  53
  54 namespace Dali
  55 {
  56 namespace Toolkit
  57 {
  58 namespace Internal
  59 {
  60 namespace
  61 {
  62 const unsigned int DEFAULT_RENDERING_BACKEND = Dali::Toolkit::DevelText::DEFAULT_RENDERING_BACKEND;
  63
  64 /**
  65  * @brief How the text visual should be aligned vertically inside the control.
  66  *
  67  * 0.0f aligns the text to the top, 0.5f aligns the text to the center, 1.0f aligns the text to the bottom.
  68  * The alignment depends on the alignment value of the text label (Use Text::VerticalAlignment enumerations).
  69  */
  70 const float VERTICAL_ALIGNMENT_TABLE[Text::VerticalAlignment::BOTTOM + 1] =
  71   {
  72     0.0f, // VerticalAlignment::TOP
  73     0.5f, // VerticalAlignment::CENTER
  74     1.0f  // VerticalAlignment::BOTTOM
  75 };
  76
  77 const std::string TEXT_FIT_ENABLE_KEY("enable");
  78 const std::string TEXT_FIT_MIN_SIZE_KEY("minSize");
  79 const std::string TEXT_FIT_MAX_SIZE_KEY("maxSize");
  80 const std::string TEXT_FIT_STEP_SIZE_KEY("stepSize");
  81 const std::string TEXT_FIT_FONT_SIZE_TYPE_KEY("fontSizeType");
  82
  83 #if defined(DEBUG_ENABLED)
  84 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, true, "LOG_TEXT_CONTROLS");
  85 #endif
  86
  87 const Scripting::StringEnum AUTO_SCROLL_STOP_MODE_TABLE[] =
  88   {
  89     {"IMMEDIATE", Toolkit::TextLabel::AutoScrollStopMode::IMMEDIATE},
  90     {"FINISH_LOOP", Toolkit::TextLabel::AutoScrollStopMode::FINISH_LOOP},
  91 };
  92 const unsigned int AUTO_SCROLL_STOP_MODE_TABLE_COUNT = sizeof(AUTO_SCROLL_STOP_MODE_TABLE) / sizeof(AUTO_SCROLL_STOP_MODE_TABLE[0]);
  93
  94 // Type registration
  95 BaseHandle Create()
  96 {
  97   return Toolkit::TextLabel::New();
  98 }
  99
 100 // clang-format off
 101 // Setup properties, signals and actions using the type-registry.
 102 DALI_TYPE_REGISTRATION_BEGIN(Toolkit::TextLabel, Toolkit::Control, Create);
 103
 104 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "text",                         STRING,  TEXT                           )
 105 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "fontFamily",                   STRING,  FONT_FAMILY                    )
 106 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "fontStyle",                    MAP,     FONT_STYLE                     )
 107 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "pointSize",                    FLOAT,   POINT_SIZE                     )
 108 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "multiLine",                    BOOLEAN, MULTI_LINE                     )
 109 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "horizontalAlignment",          STRING,  HORIZONTAL_ALIGNMENT           )
 110 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "verticalAlignment",            STRING,  VERTICAL_ALIGNMENT             )
 111 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "enableMarkup",                 BOOLEAN, ENABLE_MARKUP                  )
 112 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "enableAutoScroll",             BOOLEAN, ENABLE_AUTO_SCROLL             )
 113 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollSpeed",              INTEGER, AUTO_SCROLL_SPEED              )
 114 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollLoopCount",          INTEGER, AUTO_SCROLL_LOOP_COUNT         )
 115 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollGap",                FLOAT,   AUTO_SCROLL_GAP                )
 116 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "lineSpacing",                  FLOAT,   LINE_SPACING                   )
 117 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "underline",                    MAP,     UNDERLINE                      )
 118 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "shadow",                       MAP,     SHADOW                         )
 119 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "emboss",                       MAP,     EMBOSS                         )
 120 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "outline",                      MAP,     OUTLINE                        )
 121 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "pixelSize",                    FLOAT,   PIXEL_SIZE                     )
 122 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "ellipsis",                     BOOLEAN, ELLIPSIS                       )
 123 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollLoopDelay",          FLOAT,   AUTO_SCROLL_LOOP_DELAY         )
 124 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollStopMode",           STRING,  AUTO_SCROLL_STOP_MODE          )
 125 DALI_PROPERTY_REGISTRATION_READ_ONLY(Toolkit,       TextLabel, "lineCount",                    INTEGER, LINE_COUNT                     )
 126 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "lineWrapMode",                 INTEGER, LINE_WRAP_MODE                 )
 127 DALI_DEVEL_PROPERTY_REGISTRATION_READ_ONLY(Toolkit, TextLabel, "textDirection",                INTEGER, TEXT_DIRECTION                 )
 128 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "verticalLineAlignment",        INTEGER, VERTICAL_LINE_ALIGNMENT        )
 129 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "textBackground",               MAP,     BACKGROUND                     )
 130 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "ignoreSpacesAfterText",        BOOLEAN, IGNORE_SPACES_AFTER_TEXT       )
 131 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "matchSystemLanguageDirection", BOOLEAN, MATCH_SYSTEM_LANGUAGE_DIRECTION)
 132 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "textFit",                      MAP,     TEXT_FIT                       )
 133 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "minLineSize",                  FLOAT,   MIN_LINE_SIZE                  )
 134 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "renderingBackend",             INTEGER, RENDERING_BACKEND              )
 135 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "fontSizeScale",                FLOAT,   FONT_SIZE_SCALE                )
 136
 137 DALI_ANIMATABLE_PROPERTY_REGISTRATION_WITH_DEFAULT(Toolkit, TextLabel, "textColor",      Color::BLACK,     TEXT_COLOR   )
 138 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorRed",   TEXT_COLOR_RED,   TEXT_COLOR, 0)
 139 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorGreen", TEXT_COLOR_GREEN, TEXT_COLOR, 1)
 140 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorBlue",  TEXT_COLOR_BLUE,  TEXT_COLOR, 2)
 141 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorAlpha", TEXT_COLOR_ALPHA, TEXT_COLOR, 3)
 142
 143 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "anchorClicked", SIGNAL_ANCHOR_CLICKED)
 144
 145 DALI_TYPE_REGISTRATION_END()
 146 // clang-format on
 147
 148 /// Parses the property map for the TEXT_FIT property
 149 void ParseTextFitProperty(Text::ControllerPtr& controller, const Property::Map* propertiesMap)
 150 {
 151   if(propertiesMap && !propertiesMap->Empty())
 152   {
 153     bool                     enabled      = false;
 154     float                    minSize      = 0.f;
 155     float                    maxSize      = 0.f;
 156     float                    stepSize     = 0.f;
 157     bool                     isMinSizeSet = false, isMaxSizeSet = false, isStepSizeSet = false;
 158     Controller::FontSizeType type = Controller::FontSizeType::POINT_SIZE;
 159
 160     const unsigned int numberOfItems = propertiesMap->Count();
 161
 162     // Parses and applies
 163     for(unsigned int index = 0u; index < numberOfItems; ++index)
 164     {
 165       const KeyValuePair& valueGet = propertiesMap->GetKeyValue(index);
 166
 167       if((Controller::TextFitInfo::Property::TEXT_FIT_ENABLE == valueGet.first.indexKey) || (TEXT_FIT_ENABLE_KEY == valueGet.first.stringKey))
 168       {
 169         /// Enable key.
 170         enabled = valueGet.second.Get<bool>();
 171       }
 172       else if((Controller::TextFitInfo::Property::TEXT_FIT_MIN_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MIN_SIZE_KEY == valueGet.first.stringKey))
 173       {
 174         /// min size.
 175         minSize      = valueGet.second.Get<float>();
 176         isMinSizeSet = true;
 177       }
 178       else if((Controller::TextFitInfo::Property::TEXT_FIT_MAX_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MAX_SIZE_KEY == valueGet.first.stringKey))
 179       {
 180         /// max size.
 181         maxSize      = valueGet.second.Get<float>();
 182         isMaxSizeSet = true;
 183       }
 184       else if((Controller::TextFitInfo::Property::TEXT_FIT_STEP_SIZE == valueGet.first.indexKey) || (TEXT_FIT_STEP_SIZE_KEY == valueGet.first.stringKey))
 185       {
 186         /// step size.
 187         stepSize      = valueGet.second.Get<float>();
 188         isStepSizeSet = true;
 189       }
 190       else if((Controller::TextFitInfo::Property::TEXT_FIT_FONT_SIZE_TYPE == valueGet.first.indexKey) || (TEXT_FIT_FONT_SIZE_TYPE_KEY == valueGet.first.stringKey))
 191       {
 192         if("pixelSize" == valueGet.second.Get<std::string>())
 193         {
 194           type = Controller::FontSizeType::PIXEL_SIZE;
 195         }
 196       }
 197     }
 198
 199     controller->SetTextFitEnabled(enabled);
 200     if(isMinSizeSet)
 201     {
 202       controller->SetTextFitMinSize(minSize, type);
 203     }
 204     if(isMaxSizeSet)
 205     {
 206       controller->SetTextFitMaxSize(maxSize, type);
 207     }
 208     if(isStepSizeSet)
 209     {
 210       controller->SetTextFitStepSize(stepSize, type);
 211     }
 212   }
 213 }
 214
 215 } // namespace
 216
 217 Toolkit::TextLabel TextLabel::New()
 218 {
 219   // Create the implementation, temporarily owned by this handle on stack
 220   IntrusivePtr<TextLabel> impl = new TextLabel();
 221
 222   // Pass ownership to CustomActor handle
 223   Toolkit::TextLabel handle(*impl);
 224
 225   // Second-phase init of the implementation
 226   // This can only be done after the CustomActor connection has been made...
 227   impl->Initialize();
 228
 229   return handle;
 230 }
 231
 232 void TextLabel::SetProperty(BaseObject* object, Property::Index index, const Property::Value& value)
 233 {
 234   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 235
 236   if(label)
 237   {
 238     TextLabel& impl(GetImpl(label));
 239     DALI_ASSERT_ALWAYS(impl.mController && "No text contoller");
 240
 241     switch(index)
 242     {
 243       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 244       {
 245         int backend = value.Get<int>();
 246
 247 #ifndef ENABLE_VECTOR_BASED_TEXT_RENDERING
 248         if(DevelText::RENDERING_VECTOR_BASED == backend)
 249         {
 250           backend = TextAbstraction::BITMAP_GLYPH; // Fallback to bitmap-based rendering
 251         }
 252 #endif
 253         if(impl.mRenderingBackend != backend)
 254         {
 255           impl.mRenderingBackend = backend;
 256           impl.mTextUpdateNeeded = true;
 257
 258           // When using the vector-based rendering, the size of the GLyphs are different
 259           TextAbstraction::GlyphType glyphType = (DevelText::RENDERING_VECTOR_BASED == impl.mRenderingBackend) ? TextAbstraction::VECTOR_GLYPH : TextAbstraction::BITMAP_GLYPH;
 260           impl.mController->SetGlyphType(glyphType);
 261         }
 262         break;
 263       }
 264       case Toolkit::TextLabel::Property::TEXT:
 265       {
 266         impl.mController->SetText(value.Get<std::string>());
 267         break;
 268       }
 269       case Toolkit::TextLabel::Property::FONT_FAMILY:
 270       {
 271         const std::string& fontFamily = value.Get<std::string>();
 272
 273         DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::SetProperty Property::FONT_FAMILY newFont(%s)\n", fontFamily.c_str());
 274         impl.mController->SetDefaultFontFamily(fontFamily);
 275         break;
 276       }
 277       case Toolkit::TextLabel::Property::FONT_STYLE:
 278       {
 279         SetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 280         break;
 281       }
 282       case Toolkit::TextLabel::Property::POINT_SIZE:
 283       {
 284         const float pointSize = value.Get<float>();
 285
 286         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE), pointSize))
 287         {
 288           impl.mController->SetDefaultFontSize(pointSize, Text::Controller::POINT_SIZE);
 289         }
 290         break;
 291       }
 292       case Toolkit::TextLabel::Property::MULTI_LINE:
 293       {
 294         impl.mController->SetMultiLineEnabled(value.Get<bool>());
 295         break;
 296       }
 297       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 298       {
 299         Text::HorizontalAlignment::Type alignment(static_cast<Text::HorizontalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 300         if(Text::GetHorizontalAlignmentEnumeration(value, alignment))
 301         {
 302           impl.mController->SetHorizontalAlignment(alignment);
 303         }
 304         break;
 305       }
 306       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 307       {
 308         Toolkit::Text::VerticalAlignment::Type alignment(static_cast<Text::VerticalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 309         if(Text::GetVerticalAlignmentEnumeration(value, alignment))
 310         {
 311           impl.mController->SetVerticalAlignment(alignment);
 312         }
 313         break;
 314       }
 315       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 316       {
 317         const bool enableMarkup = value.Get<bool>();
 318         impl.mController->SetMarkupProcessorEnabled(enableMarkup);
 319         break;
 320       }
 321       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 322       {
 323         const bool enableAutoScroll = value.Get<bool>();
 324         // If request to auto scroll is the same as current state then do nothing.
 325         if(enableAutoScroll != impl.mController->IsAutoScrollEnabled())
 326         {
 327           // If request is disable (false) and auto scrolling is enabled then need to stop it
 328           if(enableAutoScroll == false)
 329           {
 330             if(impl.mTextScroller)
 331             {
 332               impl.mTextScroller->StopScrolling();
 333             }
 334           }
 335           // If request is enable (true) then start autoscroll as not already running
 336           else
 337           {
 338             impl.mController->SetAutoScrollEnabled(enableAutoScroll);
 339           }
 340         }
 341         break;
 342       }
 343       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 344       {
 345         Text::TextScrollerPtr                        textScroller = impl.GetTextScroller();
 346         Toolkit::TextLabel::AutoScrollStopMode::Type stopMode     = textScroller->GetStopMode();
 347         if(Scripting::GetEnumerationProperty<Toolkit::TextLabel::AutoScrollStopMode::Type>(value,
 348                                                                                            AUTO_SCROLL_STOP_MODE_TABLE,
 349                                                                                            AUTO_SCROLL_STOP_MODE_TABLE_COUNT,
 350                                                                                            stopMode))
 351         {
 352           textScroller->SetStopMode(stopMode);
 353         }
 354         break;
 355       }
 356       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 357       {
 358         impl.GetTextScroller()->SetSpeed(value.Get<int>());
 359         break;
 360       }
 361       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 362       {
 363         impl.GetTextScroller()->SetLoopCount(value.Get<int>());
 364         break;
 365       }
 366       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 367       {
 368         impl.GetTextScroller()->SetLoopDelay(value.Get<float>());
 369         break;
 370       }
 371       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 372       {
 373         impl.GetTextScroller()->SetGap(value.Get<float>());
 374         break;
 375       }
 376       case Toolkit::TextLabel::Property::LINE_SPACING:
 377       {
 378         const float lineSpacing = value.Get<float>();
 379         impl.mTextUpdateNeeded  = impl.mController->SetDefaultLineSpacing(lineSpacing) || impl.mTextUpdateNeeded;
 380         break;
 381       }
 382       case Toolkit::TextLabel::Property::UNDERLINE:
 383       {
 384         impl.mTextUpdateNeeded = SetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 385         break;
 386       }
 387       case Toolkit::TextLabel::Property::SHADOW:
 388       {
 389         impl.mTextUpdateNeeded = SetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 390         break;
 391       }
 392       case Toolkit::TextLabel::Property::EMBOSS:
 393       {
 394         impl.mTextUpdateNeeded = SetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 395         break;
 396       }
 397       case Toolkit::TextLabel::Property::OUTLINE:
 398       {
 399         impl.mTextUpdateNeeded = SetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 400         break;
 401       }
 402       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 403       {
 404         const float pixelSize = value.Get<float>();
 405         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p PIXEL_SIZE %f\n", impl.mController.Get(), pixelSize);
 406
 407         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE), pixelSize))
 408         {
 409           impl.mController->SetDefaultFontSize(pixelSize, Text::Controller::PIXEL_SIZE);
 410         }
 411         break;
 412       }
 413       case Toolkit::TextLabel::Property::ELLIPSIS:
 414       {
 415         const bool ellipsis = value.Get<bool>();
 416         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p ELLIPSIS %d\n", impl.mController.Get(), ellipsis);
 417
 418         impl.mController->SetTextElideEnabled(ellipsis);
 419         break;
 420       }
 421       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 422       {
 423         Text::LineWrap::Mode lineWrapMode(static_cast<Text::LineWrap::Mode>(-1)); // Set to invalid value to ensure a valid mode does get set
 424         if(GetLineWrapModeEnumeration(value, lineWrapMode))
 425         {
 426           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p LineWrap::MODE %d\n", impl.mController.Get(), lineWrapMode);
 427           impl.mController->SetLineWrapMode(lineWrapMode);
 428         }
 429         break;
 430       }
 431       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 432       {
 433         if(impl.mController->GetTextModel())
 434         {
 435           DevelText::VerticalLineAlignment::Type alignment = static_cast<DevelText::VerticalLineAlignment::Type>(value.Get<int>());
 436
 437           impl.mController->SetVerticalLineAlignment(alignment);
 438
 439           // Property doesn't affect the layout, only Visual must be updated
 440           TextVisual::EnableRendererUpdate(impl.mVisual);
 441
 442           // No need to trigger full re-layout. Instead call UpdateRenderer() directly
 443           TextVisual::UpdateRenderer(impl.mVisual);
 444         }
 445         break;
 446       }
 447       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 448       {
 449         impl.mTextUpdateNeeded = SetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 450         break;
 451       }
 452       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 453       {
 454         impl.mController->SetIgnoreSpacesAfterText(value.Get<bool>());
 455         break;
 456       }
 457       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 458       {
 459         impl.mController->SetMatchLayoutDirection(value.Get<bool>() ? DevelText::MatchLayoutDirection::LOCALE : DevelText::MatchLayoutDirection::CONTENTS);
 460         break;
 461       }
 462       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 463       {
 464         ParseTextFitProperty(impl.mController, value.GetMap());
 465         break;
 466       }
 467       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 468       {
 469         const float lineSize   = value.Get<float>();
 470         impl.mTextUpdateNeeded = impl.mController->SetDefaultLineSize(lineSize) || impl.mTextUpdateNeeded;
 471         break;
 472       }
 473       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 474       {
 475         const float scale = value.Get<float>();
 476         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p FONT_SIZE_SCALE %f\n", impl.mController.Get(), scale);
 477
 478         if(!Equals(impl.mController->GetFontSizeScale(), scale))
 479         {
 480           impl.mController->SetFontSizeScale(scale);
 481         }
 482         break;
 483       }
 484     }
 485
 486     // Request relayout when text update is needed. It's necessary to call it
 487     // as changing the property not via UI interaction brings no effect if only
 488     // the mTextUpdateNeeded is changed.
 489     if(impl.mTextUpdateNeeded)
 490     {
 491       // need to request relayout as size of text may have changed
 492       impl.RequestTextRelayout();
 493     }
 494   }
 495 }
 496
 497 Text::ControllerPtr TextLabel::GetTextController()
 498 {
 499   return mController;
 500 }
 501
 502 Property::Value TextLabel::GetProperty(BaseObject* object, Property::Index index)
 503 {
 504   Property::Value value;
 505
 506   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 507
 508   if(label)
 509   {
 510     TextLabel& impl(GetImpl(label));
 511     DALI_ASSERT_DEBUG(impl.mController && "No text contoller");
 512
 513     switch(index)
 514     {
 515       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 516       {
 517         value = impl.mRenderingBackend;
 518         break;
 519       }
 520       case Toolkit::TextLabel::Property::TEXT:
 521       {
 522         std::string text;
 523         impl.mController->GetText(text);
 524         value = text;
 525         break;
 526       }
 527       case Toolkit::TextLabel::Property::FONT_FAMILY:
 528       {
 529         value = impl.mController->GetDefaultFontFamily();
 530         break;
 531       }
 532       case Toolkit::TextLabel::Property::FONT_STYLE:
 533       {
 534         GetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 535         break;
 536       }
 537       case Toolkit::TextLabel::Property::POINT_SIZE:
 538       {
 539         value = impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE);
 540         break;
 541       }
 542       case Toolkit::TextLabel::Property::MULTI_LINE:
 543       {
 544         value = impl.mController->IsMultiLineEnabled();
 545         break;
 546       }
 547       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 548       {
 549         const char* name = Text::GetHorizontalAlignmentString(impl.mController->GetHorizontalAlignment());
 550
 551         if(name)
 552         {
 553           value = std::string(name);
 554         }
 555         break;
 556       }
 557       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 558       {
 559         const char* name = Text::GetVerticalAlignmentString(impl.mController->GetVerticalAlignment());
 560         if(name)
 561         {
 562           value = std::string(name);
 563         }
 564         break;
 565       }
 566       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 567       {
 568         value = impl.mController->IsMarkupProcessorEnabled();
 569         break;
 570       }
 571       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 572       {
 573         value = impl.mController->IsAutoScrollEnabled();
 574         break;
 575       }
 576       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 577       {
 578         if(impl.mTextScroller)
 579         {
 580           const char* mode = Scripting::GetEnumerationName<Toolkit::TextLabel::AutoScrollStopMode::Type>(impl.mTextScroller->GetStopMode(),
 581                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE,
 582                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE_COUNT);
 583           if(mode)
 584           {
 585             value = std::string(mode);
 586           }
 587         }
 588         break;
 589       }
 590       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 591       {
 592         if(impl.mTextScroller)
 593         {
 594           value = impl.mTextScroller->GetSpeed();
 595         }
 596         break;
 597       }
 598       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 599       {
 600         if(impl.mTextScroller)
 601         {
 602           value = impl.mTextScroller->GetLoopCount();
 603         }
 604         break;
 605       }
 606       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 607       {
 608         if(impl.mTextScroller)
 609         {
 610           value = impl.mTextScroller->GetLoopDelay();
 611         }
 612         break;
 613       }
 614       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 615       {
 616         if(impl.mTextScroller)
 617         {
 618           value = impl.mTextScroller->GetGap();
 619         }
 620         break;
 621       }
 622       case Toolkit::TextLabel::Property::LINE_SPACING:
 623       {
 624         value = impl.mController->GetDefaultLineSpacing();
 625         break;
 626       }
 627       case Toolkit::TextLabel::Property::UNDERLINE:
 628       {
 629         GetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 630         break;
 631       }
 632       case Toolkit::TextLabel::Property::SHADOW:
 633       {
 634         GetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 635         break;
 636       }
 637       case Toolkit::TextLabel::Property::EMBOSS:
 638       {
 639         GetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 640         break;
 641       }
 642       case Toolkit::TextLabel::Property::OUTLINE:
 643       {
 644         GetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 645         break;
 646       }
 647       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 648       {
 649         value = impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE);
 650         break;
 651       }
 652       case Toolkit::TextLabel::Property::ELLIPSIS:
 653       {
 654         value = impl.mController->IsTextElideEnabled();
 655         break;
 656       }
 657       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 658       {
 659         value = impl.mController->GetLineWrapMode();
 660         break;
 661       }
 662       case Toolkit::TextLabel::Property::LINE_COUNT:
 663       {
 664         float width = label.GetProperty(Actor::Property::SIZE_WIDTH).Get<float>();
 665         value       = impl.mController->GetLineCount(width);
 666         break;
 667       }
 668       case Toolkit::DevelTextLabel::Property::TEXT_DIRECTION:
 669       {
 670         value = impl.mController->GetTextDirection();
 671         break;
 672       }
 673       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 674       {
 675         value = impl.mController->GetVerticalLineAlignment();
 676         break;
 677       }
 678       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 679       {
 680         GetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 681         break;
 682       }
 683       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 684       {
 685         value = impl.mController->IsIgnoreSpacesAfterText();
 686         break;
 687       }
 688       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 689       {
 690         value = impl.mController->GetMatchLayoutDirection() != DevelText::MatchLayoutDirection::CONTENTS;
 691         break;
 692       }
 693       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 694       {
 695         const bool  enabled  = impl.mController->IsTextFitEnabled();
 696         const float minSize  = impl.mController->GetTextFitMinSize();
 697         const float maxSize  = impl.mController->GetTextFitMaxSize();
 698         const float stepSize = impl.mController->GetTextFitStepSize();
 699
 700         Property::Map map;
 701         map.Insert(TEXT_FIT_ENABLE_KEY, enabled);
 702         map.Insert(TEXT_FIT_MIN_SIZE_KEY, minSize);
 703         map.Insert(TEXT_FIT_MAX_SIZE_KEY, maxSize);
 704         map.Insert(TEXT_FIT_STEP_SIZE_KEY, stepSize);
 705         map.Insert(TEXT_FIT_FONT_SIZE_TYPE_KEY, "pointSize");
 706
 707         value = map;
 708         break;
 709       }
 710       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 711       {
 712         value = impl.mController->GetDefaultLineSize();
 713         break;
 714       }
 715       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 716       {
 717         value = impl.mController->GetFontSizeScale();
 718         break;
 719       }
 720     }
 721   }
 722
 723   return value;
 724 }
 725
 726 bool TextLabel::DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor)
 727 {
 728   Dali::BaseHandle handle(object);
 729
 730   bool               connected(true);
 731   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(handle);
 732
 733   if(0 == strcmp(signalName.c_str(), SIGNAL_ANCHOR_CLICKED))
 734   {
 735     if(label)
 736     {
 737       Internal::TextLabel& labelImpl(GetImpl(label));
 738       labelImpl.AnchorClickedSignal().Connect(tracker, functor);
 739     }
 740   }
 741   else
 742   {
 743     // signalName does not match any signal
 744     connected = false;
 745   }
 746
 747   return connected;
 748 }
 749
 750 DevelTextLabel::AnchorClickedSignalType& TextLabel::AnchorClickedSignal()
 751 {
 752   return mAnchorClickedSignal;
 753 }
 754
 755 void TextLabel::OnInitialize()
 756 {
 757   Actor self = Self();
 758
 759   Property::Map propertyMap;
 760   propertyMap.Add(Toolkit::Visual::Property::TYPE, Toolkit::Visual::TEXT);
 761
 762   mVisual = Toolkit::VisualFactory::Get().CreateVisual(propertyMap);
 763   DevelControl::RegisterVisual(*this, Toolkit::TextLabel::Property::TEXT, mVisual);
 764
 765   TextVisual::SetAnimatableTextColorProperty(mVisual, Toolkit::TextLabel::Property::TEXT_COLOR);
 766
 767   mController = TextVisual::GetController(mVisual);
 768   DALI_ASSERT_DEBUG(mController && "Invalid Text Controller")
 769
 770   mController->SetControlInterface(this);
 771   mController->SetAnchorControlInterface(this);
 772
 773   // Use height-for-width negotiation by default
 774   self.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
 775   self.SetResizePolicy(ResizePolicy::DIMENSION_DEPENDENCY, Dimension::HEIGHT);
 776
 777   // Enable highlightability
 778   self.SetProperty(Toolkit::DevelControl::Property::ACCESSIBILITY_HIGHLIGHTABLE, true);
 779
 780   // Enable the text ellipsis.
 781   mController->SetTextElideEnabled(true); // If false then text larger than control will overflow
 782
 783   // Sets layoutDirection value
 784   Dali::Stage                 stage           = Dali::Stage::GetCurrent();
 785   Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(stage.GetRootLayer().GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 786   mController->SetLayoutDirection(layoutDirection);
 787
 788   self.LayoutDirectionChangedSignal().Connect(this, &TextLabel::OnLayoutDirectionChanged);
 789
 790   // Forward input events to controller
 791   EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 792   GetTapGestureDetector().SetMaximumTapsRequired(1);
 793
 794   Layout::Engine& engine = mController->GetLayoutEngine();
 795   engine.SetCursorWidth(0u); // Do not layout space for the cursor.
 796
 797   DevelControl::SetAccessibilityConstructor(self, [](Dali::Actor actor) {
 798     return std::unique_ptr<Dali::Accessibility::Accessible>(
 799       new AccessibleImpl(actor, Dali::Accessibility::Role::LABEL));
 800   });
 801 }
 802
 803 void TextLabel::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 804 {
 805   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnStyleChange\n");
 806
 807   switch(change)
 808   {
 809     case StyleChange::DEFAULT_FONT_CHANGE:
 810     {
 811       // Property system did not set the font so should update it.
 812       const std::string& newFont = GetImpl(styleManager).GetDefaultFontFamily();
 813       DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnStyleChange StyleChange::DEFAULT_FONT_CHANGE newFont(%s)\n", newFont.c_str());
 814       mController->UpdateAfterFontChange(newFont);
 815       RelayoutRequest();
 816       break;
 817     }
 818     case StyleChange::DEFAULT_FONT_SIZE_CHANGE:
 819     {
 820       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 821       RelayoutRequest();
 822       break;
 823     }
 824     case StyleChange::THEME_CHANGE:
 825     {
 826       // Nothing to do, let control base class handle this
 827       break;
 828     }
 829   }
 830
 831   // Up call to Control
 832   Control::OnStyleChange(styleManager, change);
 833 }
 834
 835 void TextLabel::OnTap(const TapGesture& gesture)
 836 {
 837   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnTap %p\n", mController.Get());
 838
 839   // Deliver the tap before the focus event to controller; this allows us to detect when focus is gained due to tap-gestures
 840   Extents padding;
 841   padding                   = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 842   const Vector2& localPoint = gesture.GetLocalPoint();
 843   mController->AnchorEvent(localPoint.x - padding.start, localPoint.y - padding.top);
 844
 845   // parents can also listen for tap gesture events
 846   Dali::DevelActor::SetNeedGesturePropagation(Self(), true);
 847 }
 848
 849 void TextLabel::AnchorClicked(const std::string& href)
 850 {
 851   Dali::Toolkit::TextLabel handle(GetOwner());
 852   mAnchorClickedSignal.Emit(handle, href.c_str(), href.length());
 853 }
 854
 855 Vector3 TextLabel::GetNaturalSize()
 856 {
 857   Extents padding;
 858   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 859
 860   Vector3 naturalSize = mController->GetNaturalSize();
 861   naturalSize.width += (padding.start + padding.end);
 862   naturalSize.height += (padding.top + padding.bottom);
 863
 864   return naturalSize;
 865 }
 866
 867 float TextLabel::GetHeightForWidth(float width)
 868 {
 869   Extents padding;
 870   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 871
 872   return mController->GetHeightForWidth(width) + padding.top + padding.bottom;
 873 }
 874
 875 void TextLabel::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 876 {
 877   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnPropertySet index[%d]\n", index);
 878
 879   switch(index)
 880   {
 881     case Toolkit::TextLabel::Property::TEXT_COLOR:
 882     {
 883       const Vector4& textColor = propertyValue.Get<Vector4>();
 884       if(mController->GetDefaultColor() != textColor)
 885       {
 886         mController->SetDefaultColor(textColor);
 887         mTextUpdateNeeded = true;
 888       }
 889       break;
 890     }
 891     default:
 892     {
 893       Control::OnPropertySet(index, propertyValue); // up call to control for non-handled properties
 894       break;
 895     }
 896   }
 897 }
 898
 899 void TextLabel::OnRelayout(const Vector2& size, RelayoutContainer& container)
 900 {
 901   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout\n");
 902
 903   Actor self = Self();
 904
 905   Extents padding;
 906   padding = self.GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 907
 908   Vector2 contentSize(size.x - (padding.start + padding.end), size.y - (padding.top + padding.bottom));
 909
 910   if(mController->IsTextFitEnabled())
 911   {
 912     mController->FitPointSizeforLayout(contentSize);
 913     mController->SetTextFitContentSize(contentSize);
 914   }
 915
 916   // Support Right-To-Left
 917   Dali::LayoutDirection::Type layoutDirection = mController->GetLayoutDirection(self);
 918
 919   const Text::Controller::UpdateTextType updateTextType = mController->Relayout(contentSize, layoutDirection);
 920
 921   if((Text::Controller::NONE_UPDATED != (Text::Controller::MODEL_UPDATED & updateTextType)) || mTextUpdateNeeded)
 922   {
 923     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout IsAutoScrollEnabled[%s] [%p]\n", (mController->IsAutoScrollEnabled()) ? "true" : "false", this);
 924
 925     // Update the visual
 926     TextVisual::EnableRendererUpdate(mVisual);
 927
 928     // Support Right-To-Left of padding
 929     if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 930     {
 931       std::swap(padding.start, padding.end);
 932     }
 933
 934     // Calculate the size of the visual that can fit the text
 935     Size layoutSize = mController->GetTextModel()->GetLayoutSize();
 936     layoutSize.x    = contentSize.x;
 937
 938     const Vector2& shadowOffset = mController->GetTextModel()->GetShadowOffset();
 939     if(shadowOffset.y > Math::MACHINE_EPSILON_1)
 940     {
 941       layoutSize.y += shadowOffset.y;
 942     }
 943
 944     float outlineWidth = mController->GetTextModel()->GetOutlineWidth();
 945     layoutSize.y += outlineWidth * 2.0f;
 946     layoutSize.y = std::min(layoutSize.y, contentSize.y);
 947
 948     // Calculate the offset for vertical alignment only, as the layout engine will do the horizontal alignment.
 949     Vector2 alignmentOffset;
 950     alignmentOffset.x = 0.0f;
 951     alignmentOffset.y = (contentSize.y - layoutSize.y) * VERTICAL_ALIGNMENT_TABLE[mController->GetVerticalAlignment()];
 952
 953     Property::Map visualTransform;
 954     visualTransform.Add(Toolkit::Visual::Transform::Property::SIZE, layoutSize)
 955       .Add(Toolkit::Visual::Transform::Property::SIZE_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
 956       .Add(Toolkit::Visual::Transform::Property::OFFSET, Vector2(padding.start, padding.top) + alignmentOffset)
 957       .Add(Toolkit::Visual::Transform::Property::OFFSET_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
 958       .Add(Toolkit::Visual::Transform::Property::ORIGIN, Toolkit::Align::TOP_BEGIN)
 959       .Add(Toolkit::Visual::Transform::Property::ANCHOR_POINT, Toolkit::Align::TOP_BEGIN);
 960     mVisual.SetTransformAndSize(visualTransform, size);
 961
 962     if(mController->IsAutoScrollEnabled())
 963     {
 964       SetUpAutoScrolling();
 965     }
 966
 967     mTextUpdateNeeded = false;
 968   }
 969 }
 970
 971 void TextLabel::RequestTextRelayout()
 972 {
 973   RelayoutRequest();
 974   // Signal that a Relayout may be needed
 975 }
 976
 977 void TextLabel::SetUpAutoScrolling()
 978 {
 979   const Size&                    controlSize     = mController->GetView().GetControlSize();
 980   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.
 981   const Text::CharacterDirection direction       = mController->GetAutoScrollDirection();
 982
 983   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling textNaturalSize[%f,%f] controlSize[%f,%f]\n", textNaturalSize.x, textNaturalSize.y, controlSize.x, controlSize.y);
 984
 985   if(!mTextScroller)
 986   {
 987     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling Creating default TextScoller\n");
 988
 989     // If speed, loopCount or gap not set via property system then will need to create a TextScroller with defaults
 990     mTextScroller = Text::TextScroller::New(*this);
 991   }
 992
 993   // Calculate the actual gap before scrolling wraps.
 994   int     textPadding = std::max(controlSize.x - textNaturalSize.x, 0.0f);
 995   float   wrapGap     = std::max(mTextScroller->GetGap(), textPadding);
 996   Vector2 textureSize = textNaturalSize + Vector2(wrapGap, 0.0f); // Add the gap as a part of the texture
 997
 998   // Create a texture of the text for scrolling
 999   Size      verifiedSize   = textureSize;
1000   const int maxTextureSize = Dali::GetMaxTextureSize();
1001
1002   //if the texture size width exceed maxTextureSize, modify the visual model size and enabled the ellipsis
1003   bool actualellipsis = mController->IsTextElideEnabled();
1004   if(verifiedSize.width > maxTextureSize)
1005   {
1006     verifiedSize.width = maxTextureSize;
1007     if(textNaturalSize.width > maxTextureSize)
1008     {
1009       mController->SetTextElideEnabled(true);
1010     }
1011     GetHeightForWidth(maxTextureSize);
1012     wrapGap = std::max(maxTextureSize - textNaturalSize.width, 0.0f);
1013   }
1014
1015   Text::TypesetterPtr typesetter = Text::Typesetter::New(mController->GetTextModel());
1016
1017   PixelData data    = typesetter->Render(verifiedSize, mController->GetTextDirection(), Text::Typesetter::RENDER_TEXT_AND_STYLES, true, Pixel::RGBA8888); // ignore the horizontal alignment
1018   Texture   texture = Texture::New(Dali::TextureType::TEXTURE_2D,
1019                                  data.GetPixelFormat(),
1020                                  data.GetWidth(),
1021                                  data.GetHeight());
1022   texture.Upload(data);
1023
1024   TextureSet textureSet = TextureSet::New();
1025   textureSet.SetTexture(0u, texture);
1026
1027   // Filter mode needs to be set to linear to produce better quality while scaling.
1028   Sampler sampler = Sampler::New();
1029   sampler.SetFilterMode(FilterMode::LINEAR, FilterMode::LINEAR);
1030   sampler.SetWrapMode(Dali::WrapMode::DEFAULT, Dali::WrapMode::REPEAT, Dali::WrapMode::DEFAULT); // Wrap the texture in the x direction
1031   textureSet.SetSampler(0u, sampler);
1032
1033   // Set parameters for scrolling
1034   Renderer renderer = static_cast<Internal::Visual::Base&>(GetImplementation(mVisual)).GetRenderer();
1035   mTextScroller->SetParameters(Self(), renderer, textureSet, controlSize, verifiedSize, wrapGap, direction, mController->GetHorizontalAlignment(), mController->GetVerticalAlignment());
1036   mController->SetTextElideEnabled(actualellipsis);
1037 }
1038
1039 void TextLabel::ScrollingFinished()
1040 {
1041   // Pure Virtual from TextScroller Interface
1042   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::ScrollingFinished\n");
1043   mController->SetAutoScrollEnabled(false);
1044   RequestTextRelayout();
1045 }
1046
1047 void TextLabel::OnLayoutDirectionChanged(Actor actor, LayoutDirection::Type type)
1048 {
1049   mController->ChangedLayoutDirection();
1050 }
1051
1052 TextLabel::TextLabel()
1053 : Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT)),
1054   mRenderingBackend(DEFAULT_RENDERING_BACKEND),
1055   mTextUpdateNeeded(false)
1056 {
1057 }
1058
1059 TextLabel::~TextLabel()
1060 {
1061 }
1062
1063 std::string TextLabel::AccessibleImpl::GetNameRaw()
1064 {
1065   auto self = Toolkit::TextLabel::DownCast(Self());
1066   return self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1067 }
1068
1069 Property::Index TextLabel::AccessibleImpl::GetNamePropertyIndex()
1070 {
1071   return Toolkit::TextLabel::Property::TEXT;
1072 }
1073
1074 std::string TextLabel::AccessibleImpl::GetText(size_t startOffset, size_t endOffset)
1075 {
1076   if(endOffset <= startOffset)
1077   {
1078     return {};
1079   }
1080
1081   auto self = Toolkit::TextLabel::DownCast(Self());
1082   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1083
1084   if(startOffset > text.size() || endOffset > text.size())
1085   {
1086     return {};
1087   }
1088
1089   return text.substr(startOffset, endOffset - startOffset);
1090 }
1091
1092 size_t TextLabel::AccessibleImpl::GetCharacterCount()
1093 {
1094   auto self = Toolkit::TextLabel::DownCast(Self());
1095   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1096
1097   return text.size();
1098 }
1099
1100 size_t TextLabel::AccessibleImpl::GetCursorOffset()
1101 {
1102   return {};
1103 }
1104
1105 bool TextLabel::AccessibleImpl::SetCursorOffset(size_t offset)
1106 {
1107   return {};
1108 }
1109
1110 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetTextAtOffset(size_t offset, Dali::Accessibility::TextBoundary boundary)
1111 {
1112   auto self = Toolkit::TextLabel::DownCast(Self());
1113   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1114   auto textSize = text.size();
1115
1116   auto range = Dali::Accessibility::Range{};
1117
1118   switch(boundary)
1119   {
1120     case Dali::Accessibility::TextBoundary::CHARACTER:
1121     {
1122       if(offset < textSize)
1123       {
1124         range.content     = text[offset];
1125         range.startOffset = offset;
1126         range.endOffset   = offset + 1;
1127       }
1128       break;
1129     }
1130     case Dali::Accessibility::TextBoundary::WORD:
1131     case Dali::Accessibility::TextBoundary::LINE:
1132     {
1133       auto textString = text.c_str();
1134       auto breaks = std::vector<char>(textSize, 0);
1135
1136       if(boundary == Dali::Accessibility::TextBoundary::WORD)
1137       {
1138         Accessibility::Accessible::FindWordSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1139       }
1140       else
1141       {
1142         Accessibility::Accessible::FindLineSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1143       }
1144
1145       auto index = 0u;
1146       auto counter = 0u;
1147       while(index < textSize && counter <= offset)
1148       {
1149         auto start = index;
1150         if(breaks[index])
1151         {
1152           while(breaks[index])
1153           {
1154             index++;
1155           }
1156           counter++;
1157         }
1158         else
1159         {
1160           if(boundary == Dali::Accessibility::TextBoundary::WORD)
1161           {
1162             index++;
1163           }
1164           if(boundary == Dali::Accessibility::TextBoundary::LINE)
1165           {
1166             counter++;
1167           }
1168         }
1169
1170         if((counter > 0) && ((counter - 1) == offset))
1171         {
1172           range.content     = text.substr(start, index - start + 1);
1173           range.startOffset = start;
1174           range.endOffset   = index + 1;
1175         }
1176
1177         if(boundary == Dali::Accessibility::TextBoundary::LINE)
1178         {
1179           index++;
1180         }
1181       }
1182       break;
1183     }
1184     case Dali::Accessibility::TextBoundary::SENTENCE:
1185     {
1186       /* not supported by default */
1187       break;
1188     }
1189     case Dali::Accessibility::TextBoundary::PARAGRAPH:
1190     {
1191       /* Paragraph is not supported by libunibreak library */
1192       break;
1193     }
1194     default:
1195       break;
1196   }
1197
1198   return range;
1199 }
1200
1201 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetRangeOfSelection(size_t selectionIndex)
1202 {
1203   // Since DALi supports only one selection indexes higher than 0 are ignored
1204   if(selectionIndex > 0)
1205   {
1206     return {};
1207   }
1208
1209   auto self  = Toolkit::TextLabel::DownCast(Self());
1210   auto controller = Dali::Toolkit::GetImpl(self).GetTextController();
1211   std::string value{};
1212   controller->RetrieveSelection(value);
1213   auto indices = controller->GetSelectionIndexes();
1214
1215   return {static_cast<size_t>(indices.first), static_cast<size_t>(indices.second), value};
1216 }
1217
1218 bool TextLabel::AccessibleImpl::RemoveSelection(size_t selectionIndex)
1219 {
1220   // Since DALi supports only one selection indexes higher than 0 are ignored
1221   if(selectionIndex > 0)
1222   {
1223     return false;
1224   }
1225
1226   auto self = Toolkit::TextLabel::DownCast(Self());
1227   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(0, 0);
1228   return true;
1229 }
1230
1231 bool TextLabel::AccessibleImpl::SetRangeOfSelection(size_t selectionIndex, size_t startOffset, size_t endOffset)
1232 {
1233   // Since DALi supports only one selection indexes higher than 0 are ignored
1234   if(selectionIndex > 0)
1235   {
1236     return false;
1237   }
1238
1239   auto self = Toolkit::TextLabel::DownCast(Self());
1240   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(startOffset, endOffset);
1241   return true;
1242 }
1243
1244 } // namespace Internal
1245
1246 } // namespace Toolkit
1247
1248 } // namespace Dali