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