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

   1 /*
   2  * Copyright (c) 2021 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  *
  16  */
  17
  18 // CLASS HEADER
  19 #include <dali-toolkit/internal/controls/text-controls/text-label-impl.h>
  20
  21 // EXTERNAL INCLUDES
  22 #include <dali/devel-api/actors/actor-devel.h>
  23 #include <dali/devel-api/adaptor-framework/image-loading.h>
  24 #include <dali/devel-api/common/stage.h>
  25 #include <dali/devel-api/object/property-helper-devel.h>
  26 #include <dali/integration-api/debug.h>
  27 #include <dali/public-api/common/dali-common.h>
  28 #include <dali/public-api/object/type-registry-helper.h>
  29
  30 // INTERNAL INCLUDES
  31 #include <dali-toolkit/devel-api/controls/control-depth-index-ranges.h>
  32 #include <dali-toolkit/devel-api/text/rendering-backend.h>
  33 #include <dali-toolkit/internal/controls/text-controls/common-text-utils.h>
  34 #include <dali-toolkit/internal/styling/style-manager-impl.h>
  35 #include <dali-toolkit/internal/text/property-string-parser.h>
  36 #include <dali-toolkit/internal/text/rendering/text-backend.h>
  37 #include <dali-toolkit/internal/text/text-definitions.h>
  38 #include <dali-toolkit/internal/text/text-effects-style.h>
  39 #include <dali-toolkit/internal/text/text-font-style.h>
  40 #include <dali-toolkit/internal/text/text-view.h>
  41 #include <dali-toolkit/public-api/text/text-enumerations.h>
  42
  43 #include <dali-toolkit/devel-api/controls/control-devel.h>
  44 #include <dali-toolkit/devel-api/visual-factory/visual-base.h>
  45 #include <dali-toolkit/devel-api/visual-factory/visual-factory.h>
  46 #include <dali-toolkit/internal/text/text-enumerations-impl.h>
  47 #include <dali-toolkit/public-api/align-enumerations.h>
  48 #include <dali-toolkit/public-api/visuals/text-visual-properties.h>
  49 #include <dali-toolkit/public-api/visuals/visual-properties.h>
  50
  51 // DEVEL INCLUDES
  52 #include <dali-toolkit/devel-api/controls/text-controls/text-label-devel.h>
  53
  54 using namespace Dali::Toolkit::Text;
  55
  56 namespace Dali
  57 {
  58 namespace Toolkit
  59 {
  60 namespace Internal
  61 {
  62 namespace
  63 {
  64 const unsigned int DEFAULT_RENDERING_BACKEND = Dali::Toolkit::DevelText::DEFAULT_RENDERING_BACKEND;
  65
  66 /**
  67  * @brief How the text visual should be aligned vertically inside the control.
  68  *
  69  * 0.0f aligns the text to the top, 0.5f aligns the text to the center, 1.0f aligns the text to the bottom.
  70  * The alignment depends on the alignment value of the text label (Use Text::VerticalAlignment enumerations).
  71  */
  72 const float VERTICAL_ALIGNMENT_TABLE[Text::VerticalAlignment::BOTTOM + 1] =
  73   {
  74     0.0f, // VerticalAlignment::TOP
  75     0.5f, // VerticalAlignment::CENTER
  76     1.0f  // VerticalAlignment::BOTTOM
  77 };
  78
  79 const std::string TEXT_FIT_ENABLE_KEY("enable");
  80 const std::string TEXT_FIT_MIN_SIZE_KEY("minSize");
  81 const std::string TEXT_FIT_MAX_SIZE_KEY("maxSize");
  82 const std::string TEXT_FIT_STEP_SIZE_KEY("stepSize");
  83 const std::string TEXT_FIT_FONT_SIZE_KEY("fontSize");
  84 const std::string TEXT_FIT_FONT_SIZE_TYPE_KEY("fontSizeType");
  85
  86 #if defined(DEBUG_ENABLED)
  87 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, true, "LOG_TEXT_CONTROLS");
  88 #endif
  89
  90 const Scripting::StringEnum AUTO_SCROLL_STOP_MODE_TABLE[] =
  91   {
  92     {"IMMEDIATE", Toolkit::TextLabel::AutoScrollStopMode::IMMEDIATE},
  93     {"FINISH_LOOP", Toolkit::TextLabel::AutoScrollStopMode::FINISH_LOOP},
  94 };
  95 const unsigned int AUTO_SCROLL_STOP_MODE_TABLE_COUNT = sizeof(AUTO_SCROLL_STOP_MODE_TABLE) / sizeof(AUTO_SCROLL_STOP_MODE_TABLE[0]);
  96
  97 // Type registration
  98 BaseHandle Create()
  99 {
 100   return Toolkit::TextLabel::New();
 101 }
 102
 103 // clang-format off
 104 // Setup properties, signals and actions using the type-registry.
 105 DALI_TYPE_REGISTRATION_BEGIN(Toolkit::TextLabel, Toolkit::Control, Create);
 106
 107 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "text",                         STRING,  TEXT                           )
 108 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "fontFamily",                   STRING,  FONT_FAMILY                    )
 109 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "fontStyle",                    MAP,     FONT_STYLE                     )
 110 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "pointSize",                    FLOAT,   POINT_SIZE                     )
 111 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "multiLine",                    BOOLEAN, MULTI_LINE                     )
 112 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "horizontalAlignment",          STRING,  HORIZONTAL_ALIGNMENT           )
 113 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "verticalAlignment",            STRING,  VERTICAL_ALIGNMENT             )
 114 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "enableMarkup",                 BOOLEAN, ENABLE_MARKUP                  )
 115 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "enableAutoScroll",             BOOLEAN, ENABLE_AUTO_SCROLL             )
 116 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollSpeed",              INTEGER, AUTO_SCROLL_SPEED              )
 117 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollLoopCount",          INTEGER, AUTO_SCROLL_LOOP_COUNT         )
 118 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollGap",                FLOAT,   AUTO_SCROLL_GAP                )
 119 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "lineSpacing",                  FLOAT,   LINE_SPACING                   )
 120 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "underline",                    MAP,     UNDERLINE                      )
 121 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "shadow",                       MAP,     SHADOW                         )
 122 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "emboss",                       MAP,     EMBOSS                         )
 123 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "outline",                      MAP,     OUTLINE                        )
 124 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "pixelSize",                    FLOAT,   PIXEL_SIZE                     )
 125 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "ellipsis",                     BOOLEAN, ELLIPSIS                       )
 126 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollLoopDelay",          FLOAT,   AUTO_SCROLL_LOOP_DELAY         )
 127 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "autoScrollStopMode",           STRING,  AUTO_SCROLL_STOP_MODE          )
 128 DALI_PROPERTY_REGISTRATION_READ_ONLY(Toolkit,       TextLabel, "lineCount",                    INTEGER, LINE_COUNT                     )
 129 DALI_PROPERTY_REGISTRATION(Toolkit,                 TextLabel, "lineWrapMode",                 INTEGER, LINE_WRAP_MODE                 )
 130 DALI_DEVEL_PROPERTY_REGISTRATION_READ_ONLY(Toolkit, TextLabel, "textDirection",                INTEGER, TEXT_DIRECTION                 )
 131 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "verticalLineAlignment",        INTEGER, VERTICAL_LINE_ALIGNMENT        )
 132 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "textBackground",               MAP,     BACKGROUND                     )
 133 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "ignoreSpacesAfterText",        BOOLEAN, IGNORE_SPACES_AFTER_TEXT       )
 134 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "matchSystemLanguageDirection", BOOLEAN, MATCH_SYSTEM_LANGUAGE_DIRECTION)
 135 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "textFit",                      MAP,     TEXT_FIT                       )
 136 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "minLineSize",                  FLOAT,   MIN_LINE_SIZE                  )
 137 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "renderingBackend",             INTEGER, RENDERING_BACKEND              )
 138 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "fontSizeScale",                FLOAT,   FONT_SIZE_SCALE                )
 139 DALI_DEVEL_PROPERTY_REGISTRATION(Toolkit,           TextLabel, "ellipsisPosition",             INTEGER, ELLIPSIS_POSITION              )
 140
 141 DALI_ANIMATABLE_PROPERTY_REGISTRATION_WITH_DEFAULT(Toolkit, TextLabel, "textColor",      Color::BLACK,     TEXT_COLOR   )
 142 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorRed",   TEXT_COLOR_RED,   TEXT_COLOR, 0)
 143 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorGreen", TEXT_COLOR_GREEN, TEXT_COLOR, 1)
 144 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorBlue",  TEXT_COLOR_BLUE,  TEXT_COLOR, 2)
 145 DALI_ANIMATABLE_PROPERTY_COMPONENT_REGISTRATION(Toolkit,    TextLabel, "textColorAlpha", TEXT_COLOR_ALPHA, TEXT_COLOR, 3)
 146
 147 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "anchorClicked", SIGNAL_ANCHOR_CLICKED)
 148 DALI_SIGNAL_REGISTRATION(Toolkit, TextLabel, "textFitChanged", SIGNAL_TEXT_FIT_CHANGED)
 149
 150 DALI_TYPE_REGISTRATION_END()
 151 // clang-format on
 152
 153 /// Parses the property map for the TEXT_FIT property
 154 void ParseTextFitProperty(Text::ControllerPtr& controller, const Property::Map* propertiesMap)
 155 {
 156   if(propertiesMap && !propertiesMap->Empty())
 157   {
 158     bool                     enabled      = false;
 159     float                    minSize      = 0.f;
 160     float                    maxSize      = 0.f;
 161     float                    stepSize     = 0.f;
 162     bool                     isMinSizeSet = false, isMaxSizeSet = false, isStepSizeSet = false;
 163     Controller::FontSizeType type = Controller::FontSizeType::POINT_SIZE;
 164
 165     const unsigned int numberOfItems = propertiesMap->Count();
 166
 167     // Parses and applies
 168     for(unsigned int index = 0u; index < numberOfItems; ++index)
 169     {
 170       const KeyValuePair& valueGet = propertiesMap->GetKeyValue(index);
 171
 172       if((Controller::TextFitInfo::Property::TEXT_FIT_ENABLE == valueGet.first.indexKey) || (TEXT_FIT_ENABLE_KEY == valueGet.first.stringKey))
 173       {
 174         /// Enable key.
 175         enabled = valueGet.second.Get<bool>();
 176       }
 177       else if((Controller::TextFitInfo::Property::TEXT_FIT_MIN_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MIN_SIZE_KEY == valueGet.first.stringKey))
 178       {
 179         /// min size.
 180         minSize      = valueGet.second.Get<float>();
 181         isMinSizeSet = true;
 182       }
 183       else if((Controller::TextFitInfo::Property::TEXT_FIT_MAX_SIZE == valueGet.first.indexKey) || (TEXT_FIT_MAX_SIZE_KEY == valueGet.first.stringKey))
 184       {
 185         /// max size.
 186         maxSize      = valueGet.second.Get<float>();
 187         isMaxSizeSet = true;
 188       }
 189       else if((Controller::TextFitInfo::Property::TEXT_FIT_STEP_SIZE == valueGet.first.indexKey) || (TEXT_FIT_STEP_SIZE_KEY == valueGet.first.stringKey))
 190       {
 191         /// step size.
 192         stepSize      = valueGet.second.Get<float>();
 193         isStepSizeSet = true;
 194       }
 195       else if((Controller::TextFitInfo::Property::TEXT_FIT_FONT_SIZE_TYPE == valueGet.first.indexKey) || (TEXT_FIT_FONT_SIZE_TYPE_KEY == valueGet.first.stringKey))
 196       {
 197         if("pixelSize" == valueGet.second.Get<std::string>())
 198         {
 199           type = Controller::FontSizeType::PIXEL_SIZE;
 200         }
 201       }
 202     }
 203
 204     controller->SetTextFitEnabled(enabled);
 205     if(isMinSizeSet)
 206     {
 207       controller->SetTextFitMinSize(minSize, type);
 208     }
 209     if(isMaxSizeSet)
 210     {
 211       controller->SetTextFitMaxSize(maxSize, type);
 212     }
 213     if(isStepSizeSet)
 214     {
 215       controller->SetTextFitStepSize(stepSize, type);
 216     }
 217   }
 218 }
 219
 220 } // namespace
 221
 222 Toolkit::TextLabel TextLabel::New()
 223 {
 224   // Create the implementation, temporarily owned by this handle on stack
 225   IntrusivePtr<TextLabel> impl = new TextLabel();
 226
 227   // Pass ownership to CustomActor handle
 228   Toolkit::TextLabel handle(*impl);
 229
 230   // Second-phase init of the implementation
 231   // This can only be done after the CustomActor connection has been made...
 232   impl->Initialize();
 233
 234   return handle;
 235 }
 236
 237 void TextLabel::SetProperty(BaseObject* object, Property::Index index, const Property::Value& value)
 238 {
 239   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 240
 241   if(label)
 242   {
 243     TextLabel& impl(GetImpl(label));
 244     DALI_ASSERT_ALWAYS(impl.mController && "No text contoller");
 245
 246     switch(index)
 247     {
 248       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 249       {
 250         int backend = value.Get<int>();
 251
 252 #ifndef ENABLE_VECTOR_BASED_TEXT_RENDERING
 253         if(DevelText::RENDERING_VECTOR_BASED == backend)
 254         {
 255           backend = TextAbstraction::BITMAP_GLYPH; // Fallback to bitmap-based rendering
 256         }
 257 #endif
 258         if(impl.mRenderingBackend != backend)
 259         {
 260           impl.mRenderingBackend = backend;
 261           impl.mTextUpdateNeeded = true;
 262
 263           // When using the vector-based rendering, the size of the GLyphs are different
 264           TextAbstraction::GlyphType glyphType = (DevelText::RENDERING_VECTOR_BASED == impl.mRenderingBackend) ? TextAbstraction::VECTOR_GLYPH : TextAbstraction::BITMAP_GLYPH;
 265           impl.mController->SetGlyphType(glyphType);
 266         }
 267         break;
 268       }
 269       case Toolkit::TextLabel::Property::TEXT:
 270       {
 271         impl.mController->SetText(value.Get<std::string>());
 272
 273         if(impl.mController->HasAnchors())
 274         {
 275           // Forward input events to controller
 276           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 277         }
 278         else
 279         {
 280           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 281         }
 282
 283         break;
 284       }
 285       case Toolkit::TextLabel::Property::FONT_FAMILY:
 286       {
 287         const std::string& fontFamily = value.Get<std::string>();
 288
 289         DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::SetProperty Property::FONT_FAMILY newFont(%s)\n", fontFamily.c_str());
 290         impl.mController->SetDefaultFontFamily(fontFamily);
 291         break;
 292       }
 293       case Toolkit::TextLabel::Property::FONT_STYLE:
 294       {
 295         SetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 296         break;
 297       }
 298       case Toolkit::TextLabel::Property::POINT_SIZE:
 299       {
 300         const float pointSize = value.Get<float>();
 301
 302         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE), pointSize))
 303         {
 304           impl.mController->SetDefaultFontSize(pointSize, Text::Controller::POINT_SIZE);
 305         }
 306         break;
 307       }
 308       case Toolkit::TextLabel::Property::MULTI_LINE:
 309       {
 310         impl.mController->SetMultiLineEnabled(value.Get<bool>());
 311         break;
 312       }
 313       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 314       {
 315         Text::HorizontalAlignment::Type alignment(static_cast<Text::HorizontalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 316         if(Text::GetHorizontalAlignmentEnumeration(value, alignment))
 317         {
 318           impl.mController->SetHorizontalAlignment(alignment);
 319         }
 320         break;
 321       }
 322       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 323       {
 324         Toolkit::Text::VerticalAlignment::Type alignment(static_cast<Text::VerticalAlignment::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 325         if(Text::GetVerticalAlignmentEnumeration(value, alignment))
 326         {
 327           impl.mController->SetVerticalAlignment(alignment);
 328         }
 329         break;
 330       }
 331       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 332       {
 333         const bool enableMarkup = value.Get<bool>();
 334         impl.mController->SetMarkupProcessorEnabled(enableMarkup);
 335
 336         if(impl.mController->HasAnchors())
 337         {
 338           // Forward input events to controller
 339           impl.EnableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 340         }
 341         else
 342         {
 343           impl.DisableGestureDetection(static_cast<GestureType::Value>(GestureType::TAP));
 344         }
 345         break;
 346       }
 347       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 348       {
 349         const bool enableAutoScroll = value.Get<bool>();
 350         // If request to auto scroll is the same as current state then do nothing.
 351         if(enableAutoScroll != impl.mController->IsAutoScrollEnabled())
 352         {
 353           // If request is disable (false) and auto scrolling is enabled then need to stop it
 354           if(enableAutoScroll == false)
 355           {
 356             if(impl.mTextScroller)
 357             {
 358               impl.mTextScroller->StopScrolling();
 359             }
 360           }
 361           // If request is enable (true) then start autoscroll as not already running
 362           else
 363           {
 364             impl.mController->SetAutoScrollEnabled(enableAutoScroll);
 365           }
 366         }
 367         break;
 368       }
 369       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 370       {
 371         Text::TextScrollerPtr                        textScroller = impl.GetTextScroller();
 372         Toolkit::TextLabel::AutoScrollStopMode::Type stopMode     = textScroller->GetStopMode();
 373         if(Scripting::GetEnumerationProperty<Toolkit::TextLabel::AutoScrollStopMode::Type>(value,
 374                                                                                            AUTO_SCROLL_STOP_MODE_TABLE,
 375                                                                                            AUTO_SCROLL_STOP_MODE_TABLE_COUNT,
 376                                                                                            stopMode))
 377         {
 378           textScroller->SetStopMode(stopMode);
 379         }
 380         break;
 381       }
 382       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 383       {
 384         impl.GetTextScroller()->SetSpeed(value.Get<int>());
 385         break;
 386       }
 387       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 388       {
 389         impl.GetTextScroller()->SetLoopCount(value.Get<int>());
 390         break;
 391       }
 392       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 393       {
 394         impl.GetTextScroller()->SetLoopDelay(value.Get<float>());
 395         break;
 396       }
 397       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 398       {
 399         impl.GetTextScroller()->SetGap(value.Get<float>());
 400         break;
 401       }
 402       case Toolkit::TextLabel::Property::LINE_SPACING:
 403       {
 404         const float lineSpacing = value.Get<float>();
 405         impl.mTextUpdateNeeded  = impl.mController->SetDefaultLineSpacing(lineSpacing) || impl.mTextUpdateNeeded;
 406         break;
 407       }
 408       case Toolkit::TextLabel::Property::UNDERLINE:
 409       {
 410         impl.mTextUpdateNeeded = SetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 411         break;
 412       }
 413       case Toolkit::TextLabel::Property::SHADOW:
 414       {
 415         impl.mTextUpdateNeeded = SetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 416         break;
 417       }
 418       case Toolkit::TextLabel::Property::EMBOSS:
 419       {
 420         impl.mTextUpdateNeeded = SetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 421         break;
 422       }
 423       case Toolkit::TextLabel::Property::OUTLINE:
 424       {
 425         impl.mTextUpdateNeeded = SetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 426         break;
 427       }
 428       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 429       {
 430         const float pixelSize = value.Get<float>();
 431         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p PIXEL_SIZE %f\n", impl.mController.Get(), pixelSize);
 432
 433         if(!Equals(impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE), pixelSize))
 434         {
 435           impl.mController->SetDefaultFontSize(pixelSize, Text::Controller::PIXEL_SIZE);
 436         }
 437         break;
 438       }
 439       case Toolkit::TextLabel::Property::ELLIPSIS:
 440       {
 441         const bool ellipsis = value.Get<bool>();
 442         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p ELLIPSIS %d\n", impl.mController.Get(), ellipsis);
 443
 444         impl.mController->SetTextElideEnabled(ellipsis);
 445         break;
 446       }
 447       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 448       {
 449         Text::LineWrap::Mode lineWrapMode(static_cast<Text::LineWrap::Mode>(-1)); // Set to invalid value to ensure a valid mode does get set
 450         if(GetLineWrapModeEnumeration(value, lineWrapMode))
 451         {
 452           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p LineWrap::MODE %d\n", impl.mController.Get(), lineWrapMode);
 453           impl.mController->SetLineWrapMode(lineWrapMode);
 454         }
 455         break;
 456       }
 457       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 458       {
 459         if(impl.mController->GetTextModel())
 460         {
 461           DevelText::VerticalLineAlignment::Type alignment = static_cast<DevelText::VerticalLineAlignment::Type>(value.Get<int>());
 462
 463           impl.mController->SetVerticalLineAlignment(alignment);
 464
 465           // Property doesn't affect the layout, only Visual must be updated
 466           TextVisual::EnableRendererUpdate(impl.mVisual);
 467
 468           // No need to trigger full re-layout. Instead call UpdateRenderer() directly
 469           TextVisual::UpdateRenderer(impl.mVisual);
 470         }
 471         break;
 472       }
 473       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 474       {
 475         impl.mTextUpdateNeeded = SetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT) || impl.mTextUpdateNeeded;
 476         break;
 477       }
 478       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 479       {
 480         impl.mController->SetIgnoreSpacesAfterText(value.Get<bool>());
 481         break;
 482       }
 483       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 484       {
 485         impl.mController->SetMatchLayoutDirection(value.Get<bool>() ? DevelText::MatchLayoutDirection::LOCALE : DevelText::MatchLayoutDirection::CONTENTS);
 486         break;
 487       }
 488       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 489       {
 490         ParseTextFitProperty(impl.mController, value.GetMap());
 491         impl.mController->SetTextFitChanged(true);
 492         break;
 493       }
 494       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 495       {
 496         const float lineSize   = value.Get<float>();
 497         impl.mTextUpdateNeeded = impl.mController->SetDefaultLineSize(lineSize) || impl.mTextUpdateNeeded;
 498         break;
 499       }
 500       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 501       {
 502         const float scale = value.Get<float>();
 503         DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p FONT_SIZE_SCALE %f\n", impl.mController.Get(), scale);
 504
 505         if(!Equals(impl.mController->GetFontSizeScale(), scale))
 506         {
 507           impl.mController->SetFontSizeScale(scale);
 508         }
 509         break;
 510       }
 511       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 512       {
 513         DevelText::EllipsisPosition::Type ellipsisPositionType(static_cast<DevelText::EllipsisPosition::Type>(-1)); // Set to invalid value to ensure a valid mode does get set
 514         if(GetEllipsisPositionTypeEnumeration(value, ellipsisPositionType))
 515         {
 516           DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel %p EllipsisPosition::Type %d\n", impl.mController.Get(), ellipsisPositionType);
 517           impl.mController->SetEllipsisPosition(ellipsisPositionType);
 518         }
 519         break;
 520       }
 521     }
 522
 523     // Request relayout when text update is needed. It's necessary to call it
 524     // as changing the property not via UI interaction brings no effect if only
 525     // the mTextUpdateNeeded is changed.
 526     if(impl.mTextUpdateNeeded)
 527     {
 528       // need to request relayout as size of text may have changed
 529       impl.RequestTextRelayout();
 530     }
 531   }
 532 }
 533
 534 Text::ControllerPtr TextLabel::GetTextController()
 535 {
 536   return mController;
 537 }
 538
 539 Property::Value TextLabel::GetProperty(BaseObject* object, Property::Index index)
 540 {
 541   Property::Value value;
 542
 543   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(Dali::BaseHandle(object));
 544
 545   if(label)
 546   {
 547     TextLabel& impl(GetImpl(label));
 548     DALI_ASSERT_DEBUG(impl.mController && "No text contoller");
 549
 550     switch(index)
 551     {
 552       case Toolkit::DevelTextLabel::Property::RENDERING_BACKEND:
 553       {
 554         value = impl.mRenderingBackend;
 555         break;
 556       }
 557       case Toolkit::TextLabel::Property::TEXT:
 558       {
 559         std::string text;
 560         impl.mController->GetText(text);
 561         value = text;
 562         break;
 563       }
 564       case Toolkit::TextLabel::Property::FONT_FAMILY:
 565       {
 566         value = impl.mController->GetDefaultFontFamily();
 567         break;
 568       }
 569       case Toolkit::TextLabel::Property::FONT_STYLE:
 570       {
 571         GetFontStyleProperty(impl.mController, value, Text::FontStyle::DEFAULT);
 572         break;
 573       }
 574       case Toolkit::TextLabel::Property::POINT_SIZE:
 575       {
 576         value = impl.mController->GetDefaultFontSize(Text::Controller::POINT_SIZE);
 577         break;
 578       }
 579       case Toolkit::TextLabel::Property::MULTI_LINE:
 580       {
 581         value = impl.mController->IsMultiLineEnabled();
 582         break;
 583       }
 584       case Toolkit::TextLabel::Property::HORIZONTAL_ALIGNMENT:
 585       {
 586         const char* name = Text::GetHorizontalAlignmentString(impl.mController->GetHorizontalAlignment());
 587
 588         if(name)
 589         {
 590           value = std::string(name);
 591         }
 592         break;
 593       }
 594       case Toolkit::TextLabel::Property::VERTICAL_ALIGNMENT:
 595       {
 596         const char* name = Text::GetVerticalAlignmentString(impl.mController->GetVerticalAlignment());
 597         if(name)
 598         {
 599           value = std::string(name);
 600         }
 601         break;
 602       }
 603       case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 604       {
 605         value = impl.mController->IsMarkupProcessorEnabled();
 606         break;
 607       }
 608       case Toolkit::TextLabel::Property::ENABLE_AUTO_SCROLL:
 609       {
 610         value = impl.mController->IsAutoScrollEnabled();
 611         break;
 612       }
 613       case Toolkit::TextLabel::Property::AUTO_SCROLL_STOP_MODE:
 614       {
 615         if(impl.mTextScroller)
 616         {
 617           const char* mode = Scripting::GetEnumerationName<Toolkit::TextLabel::AutoScrollStopMode::Type>(impl.mTextScroller->GetStopMode(),
 618                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE,
 619                                                                                                          AUTO_SCROLL_STOP_MODE_TABLE_COUNT);
 620           if(mode)
 621           {
 622             value = std::string(mode);
 623           }
 624         }
 625         break;
 626       }
 627       case Toolkit::TextLabel::Property::AUTO_SCROLL_SPEED:
 628       {
 629         if(impl.mTextScroller)
 630         {
 631           value = impl.mTextScroller->GetSpeed();
 632         }
 633         break;
 634       }
 635       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_COUNT:
 636       {
 637         if(impl.mTextScroller)
 638         {
 639           value = impl.mTextScroller->GetLoopCount();
 640         }
 641         break;
 642       }
 643       case Toolkit::TextLabel::Property::AUTO_SCROLL_LOOP_DELAY:
 644       {
 645         if(impl.mTextScroller)
 646         {
 647           value = impl.mTextScroller->GetLoopDelay();
 648         }
 649         break;
 650       }
 651       case Toolkit::TextLabel::Property::AUTO_SCROLL_GAP:
 652       {
 653         if(impl.mTextScroller)
 654         {
 655           value = impl.mTextScroller->GetGap();
 656         }
 657         break;
 658       }
 659       case Toolkit::TextLabel::Property::LINE_SPACING:
 660       {
 661         value = impl.mController->GetDefaultLineSpacing();
 662         break;
 663       }
 664       case Toolkit::TextLabel::Property::UNDERLINE:
 665       {
 666         GetUnderlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 667         break;
 668       }
 669       case Toolkit::TextLabel::Property::SHADOW:
 670       {
 671         GetShadowProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 672         break;
 673       }
 674       case Toolkit::TextLabel::Property::EMBOSS:
 675       {
 676         GetEmbossProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 677         break;
 678       }
 679       case Toolkit::TextLabel::Property::OUTLINE:
 680       {
 681         GetOutlineProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 682         break;
 683       }
 684       case Toolkit::TextLabel::Property::PIXEL_SIZE:
 685       {
 686         value = impl.mController->GetDefaultFontSize(Text::Controller::PIXEL_SIZE);
 687         break;
 688       }
 689       case Toolkit::TextLabel::Property::ELLIPSIS:
 690       {
 691         value = impl.mController->IsTextElideEnabled();
 692         break;
 693       }
 694       case Toolkit::TextLabel::Property::LINE_WRAP_MODE:
 695       {
 696         value = impl.mController->GetLineWrapMode();
 697         break;
 698       }
 699       case Toolkit::TextLabel::Property::LINE_COUNT:
 700       {
 701         float width = label.GetProperty(Actor::Property::SIZE_WIDTH).Get<float>();
 702         value       = impl.mController->GetLineCount(width);
 703         break;
 704       }
 705       case Toolkit::DevelTextLabel::Property::TEXT_DIRECTION:
 706       {
 707         value = impl.mController->GetTextDirection();
 708         break;
 709       }
 710       case Toolkit::DevelTextLabel::Property::VERTICAL_LINE_ALIGNMENT:
 711       {
 712         value = impl.mController->GetVerticalLineAlignment();
 713         break;
 714       }
 715       case Toolkit::DevelTextLabel::Property::BACKGROUND:
 716       {
 717         GetBackgroundProperties(impl.mController, value, Text::EffectStyle::DEFAULT);
 718         break;
 719       }
 720       case Toolkit::DevelTextLabel::Property::IGNORE_SPACES_AFTER_TEXT:
 721       {
 722         value = impl.mController->IsIgnoreSpacesAfterText();
 723         break;
 724       }
 725       case Toolkit::DevelTextLabel::Property::MATCH_SYSTEM_LANGUAGE_DIRECTION:
 726       {
 727         value = impl.mController->GetMatchLayoutDirection() != DevelText::MatchLayoutDirection::CONTENTS;
 728         break;
 729       }
 730       case Toolkit::DevelTextLabel::Property::TEXT_FIT:
 731       {
 732         const bool  enabled   = impl.mController->IsTextFitEnabled();
 733         const float minSize   = impl.mController->GetTextFitMinSize();
 734         const float maxSize   = impl.mController->GetTextFitMaxSize();
 735         const float stepSize  = impl.mController->GetTextFitStepSize();
 736         const float pointSize = impl.mController->GetTextFitPointSize();
 737
 738         Property::Map map;
 739         map.Insert(TEXT_FIT_ENABLE_KEY, enabled);
 740         map.Insert(TEXT_FIT_MIN_SIZE_KEY, minSize);
 741         map.Insert(TEXT_FIT_MAX_SIZE_KEY, maxSize);
 742         map.Insert(TEXT_FIT_STEP_SIZE_KEY, stepSize);
 743         map.Insert(TEXT_FIT_FONT_SIZE_KEY, pointSize);
 744         map.Insert(TEXT_FIT_FONT_SIZE_TYPE_KEY, "pointSize");
 745
 746         value = map;
 747         break;
 748       }
 749       case Toolkit::DevelTextLabel::Property::MIN_LINE_SIZE:
 750       {
 751         value = impl.mController->GetDefaultLineSize();
 752         break;
 753       }
 754       case Toolkit::DevelTextLabel::Property::FONT_SIZE_SCALE:
 755       {
 756         value = impl.mController->GetFontSizeScale();
 757         break;
 758       }
 759       case Toolkit::DevelTextLabel::Property::ELLIPSIS_POSITION:
 760       {
 761         value = impl.mController->GetEllipsisPosition();
 762         break;
 763       }
 764     }
 765   }
 766
 767   return value;
 768 }
 769
 770 bool TextLabel::DoConnectSignal(BaseObject* object, ConnectionTrackerInterface* tracker, const std::string& signalName, FunctorDelegate* functor)
 771 {
 772   Dali::BaseHandle handle(object);
 773
 774   bool               connected(true);
 775   Toolkit::TextLabel label = Toolkit::TextLabel::DownCast(handle);
 776
 777   if(0 == strcmp(signalName.c_str(), SIGNAL_ANCHOR_CLICKED))
 778   {
 779     if(label)
 780     {
 781       Internal::TextLabel& labelImpl(GetImpl(label));
 782       labelImpl.AnchorClickedSignal().Connect(tracker, functor);
 783     }
 784   }
 785   else if(0 == strcmp(signalName.c_str(), SIGNAL_TEXT_FIT_CHANGED))
 786   {
 787     if(label)
 788     {
 789       Internal::TextLabel& labelImpl(GetImpl(label));
 790       labelImpl.TextFitChangedSignal().Connect(tracker, functor);
 791     }
 792   }
 793   else
 794   {
 795     // signalName does not match any signal
 796     connected = false;
 797   }
 798
 799   return connected;
 800 }
 801
 802 DevelTextLabel::AnchorClickedSignalType& TextLabel::AnchorClickedSignal()
 803 {
 804   return mAnchorClickedSignal;
 805 }
 806
 807 DevelTextLabel::TextFitChangedSignalType& TextLabel::TextFitChangedSignal()
 808 {
 809   return mTextFitChangedSignal;
 810 }
 811
 812 void TextLabel::OnInitialize()
 813 {
 814   Actor self = Self();
 815
 816   Property::Map propertyMap;
 817   propertyMap.Add(Toolkit::Visual::Property::TYPE, Toolkit::Visual::TEXT);
 818
 819   mVisual = Toolkit::VisualFactory::Get().CreateVisual(propertyMap);
 820   DevelControl::RegisterVisual(*this, Toolkit::TextLabel::Property::TEXT, mVisual);
 821
 822   TextVisual::SetAnimatableTextColorProperty(mVisual, Toolkit::TextLabel::Property::TEXT_COLOR);
 823
 824   mController = TextVisual::GetController(mVisual);
 825   DALI_ASSERT_DEBUG(mController && "Invalid Text Controller")
 826
 827   mController->SetControlInterface(this);
 828   mController->SetAnchorControlInterface(this);
 829
 830   // Use height-for-width negotiation by default
 831   self.SetResizePolicy(ResizePolicy::FILL_TO_PARENT, Dimension::WIDTH);
 832   self.SetResizePolicy(ResizePolicy::DIMENSION_DEPENDENCY, Dimension::HEIGHT);
 833
 834   // Enable highlightability
 835   self.SetProperty(Toolkit::DevelControl::Property::ACCESSIBILITY_HIGHLIGHTABLE, true);
 836
 837   // Enable the text ellipsis.
 838   mController->SetTextElideEnabled(true); // If false then text larger than control will overflow
 839
 840   // Sets layoutDirection value
 841   Dali::Stage                 stage           = Dali::Stage::GetCurrent();
 842   Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(stage.GetRootLayer().GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
 843   mController->SetLayoutDirection(layoutDirection);
 844
 845   self.LayoutDirectionChangedSignal().Connect(this, &TextLabel::OnLayoutDirectionChanged);
 846
 847   Layout::Engine& engine = mController->GetLayoutEngine();
 848   engine.SetCursorWidth(0u); // Do not layout space for the cursor.
 849
 850   DevelControl::SetAccessibilityConstructor(self, [](Dali::Actor actor) {
 851     return std::unique_ptr<Dali::Accessibility::Accessible>(
 852       new AccessibleImpl(actor, Dali::Accessibility::Role::LABEL));
 853   });
 854
 855   Accessibility::Bridge::EnabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 856   Accessibility::Bridge::DisabledSignal().Connect(this, &TextLabel::OnAccessibilityStatusChanged);
 857 }
 858
 859 void TextLabel::OnStyleChange(Toolkit::StyleManager styleManager, StyleChange::Type change)
 860 {
 861   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnStyleChange\n");
 862
 863   switch(change)
 864   {
 865     case StyleChange::DEFAULT_FONT_CHANGE:
 866     {
 867       // Property system did not set the font so should update it.
 868       const std::string& newFont = GetImpl(styleManager).GetDefaultFontFamily();
 869       DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnStyleChange StyleChange::DEFAULT_FONT_CHANGE newFont(%s)\n", newFont.c_str());
 870       mController->UpdateAfterFontChange(newFont);
 871       RelayoutRequest();
 872       break;
 873     }
 874     case StyleChange::DEFAULT_FONT_SIZE_CHANGE:
 875     {
 876       GetImpl(styleManager).ApplyThemeStyle(Toolkit::Control(GetOwner()));
 877       RelayoutRequest();
 878       break;
 879     }
 880     case StyleChange::THEME_CHANGE:
 881     {
 882       // Nothing to do, let control base class handle this
 883       break;
 884     }
 885   }
 886
 887   // Up call to Control
 888   Control::OnStyleChange(styleManager, change);
 889 }
 890
 891 void TextLabel::OnTap(const TapGesture& gesture)
 892 {
 893   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnTap %p\n", mController.Get());
 894
 895   // Deliver the tap before the focus event to controller; this allows us to detect when focus is gained due to tap-gestures
 896   Extents padding;
 897   padding                   = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 898   const Vector2& localPoint = gesture.GetLocalPoint();
 899   mController->AnchorEvent(localPoint.x - padding.start, localPoint.y - padding.top);
 900 }
 901
 902 void TextLabel::AnchorClicked(const std::string& href)
 903 {
 904   Dali::Toolkit::TextLabel handle(GetOwner());
 905   mAnchorClickedSignal.Emit(handle, href.c_str(), href.length());
 906 }
 907
 908 Vector3 TextLabel::GetNaturalSize()
 909 {
 910   Extents padding;
 911   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 912
 913   Vector3 naturalSize = mController->GetNaturalSize();
 914   naturalSize.width += (padding.start + padding.end);
 915   naturalSize.height += (padding.top + padding.bottom);
 916
 917   return naturalSize;
 918 }
 919
 920 float TextLabel::GetHeightForWidth(float width)
 921 {
 922   Extents padding;
 923   padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 924
 925   return mController->GetHeightForWidth(width) + padding.top + padding.bottom;
 926 }
 927
 928 void TextLabel::OnPropertySet(Property::Index index, const Property::Value& propertyValue)
 929 {
 930   DALI_LOG_INFO(gLogFilter, Debug::Verbose, "TextLabel::OnPropertySet index[%d]\n", index);
 931
 932   switch(index)
 933   {
 934     case Toolkit::TextLabel::Property::TEXT_COLOR:
 935     {
 936       const Vector4& textColor = propertyValue.Get<Vector4>();
 937       if(mController->GetDefaultColor() != textColor)
 938       {
 939         mController->SetDefaultColor(textColor);
 940         mTextUpdateNeeded = true;
 941       }
 942       break;
 943     }
 944     case Toolkit::TextLabel::Property::TEXT:
 945     case Toolkit::TextLabel::Property::ENABLE_MARKUP:
 946     {
 947       CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
 948       break;
 949     }
 950     default:
 951     {
 952       Control::OnPropertySet(index, propertyValue); // up call to control for non-handled properties
 953       break;
 954     }
 955   }
 956 }
 957
 958 void TextLabel::OnRelayout(const Vector2& size, RelayoutContainer& container)
 959 {
 960   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout\n");
 961
 962   Actor self = Self();
 963
 964   Extents padding;
 965   padding = self.GetProperty<Extents>(Toolkit::Control::Property::PADDING);
 966
 967   Vector2 contentSize(size.x - (padding.start + padding.end), size.y - (padding.top + padding.bottom));
 968
 969   if(mController->IsTextFitEnabled())
 970   {
 971     mController->FitPointSizeforLayout(contentSize);
 972     mController->SetTextFitContentSize(contentSize);
 973   }
 974
 975   // Support Right-To-Left
 976   Dali::LayoutDirection::Type layoutDirection = mController->GetLayoutDirection(self);
 977
 978   const Text::Controller::UpdateTextType updateTextType = mController->Relayout(contentSize, layoutDirection);
 979
 980   if((Text::Controller::NONE_UPDATED != (Text::Controller::MODEL_UPDATED & updateTextType)) || mTextUpdateNeeded)
 981   {
 982     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::OnRelayout IsAutoScrollEnabled[%s] [%p]\n", (mController->IsAutoScrollEnabled()) ? "true" : "false", this);
 983
 984     // Update the visual
 985     TextVisual::EnableRendererUpdate(mVisual);
 986
 987     // Support Right-To-Left of padding
 988     if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
 989     {
 990       std::swap(padding.start, padding.end);
 991     }
 992
 993     // Calculate the size of the visual that can fit the text
 994     Size layoutSize = mController->GetTextModel()->GetLayoutSize();
 995     layoutSize.x    = contentSize.x;
 996
 997     const Vector2& shadowOffset = mController->GetTextModel()->GetShadowOffset();
 998     if(shadowOffset.y > Math::MACHINE_EPSILON_1)
 999     {
1000       layoutSize.y += shadowOffset.y;
1001     }
1002
1003     float outlineWidth = mController->GetTextModel()->GetOutlineWidth();
1004     layoutSize.y += outlineWidth * 2.0f;
1005     layoutSize.y = std::min(layoutSize.y, contentSize.y);
1006
1007     // Calculate the offset for vertical alignment only, as the layout engine will do the horizontal alignment.
1008     Vector2 alignmentOffset;
1009     alignmentOffset.x = 0.0f;
1010     alignmentOffset.y = (contentSize.y - layoutSize.y) * VERTICAL_ALIGNMENT_TABLE[mController->GetVerticalAlignment()];
1011
1012     Property::Map visualTransform;
1013     visualTransform.Add(Toolkit::Visual::Transform::Property::SIZE, layoutSize)
1014       .Add(Toolkit::Visual::Transform::Property::SIZE_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1015       .Add(Toolkit::Visual::Transform::Property::OFFSET, Vector2(padding.start, padding.top) + alignmentOffset)
1016       .Add(Toolkit::Visual::Transform::Property::OFFSET_POLICY, Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
1017       .Add(Toolkit::Visual::Transform::Property::ORIGIN, Toolkit::Align::TOP_BEGIN)
1018       .Add(Toolkit::Visual::Transform::Property::ANCHOR_POINT, Toolkit::Align::TOP_BEGIN);
1019     mVisual.SetTransformAndSize(visualTransform, size);
1020
1021     if(mController->IsAutoScrollEnabled())
1022     {
1023       SetUpAutoScrolling();
1024     }
1025
1026     mTextUpdateNeeded = false;
1027   }
1028
1029   if(mController->IsTextFitChanged())
1030   {
1031     EmitTextFitChangedSignal();
1032     mController->SetTextFitChanged(false);
1033   }
1034 }
1035
1036 void TextLabel::RequestTextRelayout()
1037 {
1038   RelayoutRequest();
1039   // Signal that a Relayout may be needed
1040 }
1041
1042 void TextLabel::SetUpAutoScrolling()
1043 {
1044   const Size&                    controlSize     = mController->GetView().GetControlSize();
1045   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.
1046   const Text::CharacterDirection direction       = mController->GetAutoScrollDirection();
1047
1048   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling textNaturalSize[%f,%f] controlSize[%f,%f]\n", textNaturalSize.x, textNaturalSize.y, controlSize.x, controlSize.y);
1049
1050   if(!mTextScroller)
1051   {
1052     DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::SetUpAutoScrolling Creating default TextScoller\n");
1053
1054     // If speed, loopCount or gap not set via property system then will need to create a TextScroller with defaults
1055     mTextScroller = Text::TextScroller::New(*this);
1056   }
1057
1058   // Calculate the actual gap before scrolling wraps.
1059   int     textPadding = std::max(controlSize.x - textNaturalSize.x, 0.0f);
1060   float   wrapGap     = std::max(mTextScroller->GetGap(), textPadding);
1061   Vector2 textureSize = textNaturalSize + Vector2(wrapGap, 0.0f); // Add the gap as a part of the texture
1062
1063   // Create a texture of the text for scrolling
1064   Size      verifiedSize   = textureSize;
1065   const int maxTextureSize = Dali::GetMaxTextureSize();
1066
1067   //if the texture size width exceed maxTextureSize, modify the visual model size and enabled the ellipsis
1068   bool actualellipsis = mController->IsTextElideEnabled();
1069   if(verifiedSize.width > maxTextureSize)
1070   {
1071     verifiedSize.width = maxTextureSize;
1072     if(textNaturalSize.width > maxTextureSize)
1073     {
1074       mController->SetTextElideEnabled(true);
1075     }
1076     GetHeightForWidth(maxTextureSize);
1077     wrapGap = std::max(maxTextureSize - textNaturalSize.width, 0.0f);
1078   }
1079
1080   Text::TypesetterPtr typesetter = Text::Typesetter::New(mController->GetTextModel());
1081
1082   PixelData data    = typesetter->Render(verifiedSize, mController->GetTextDirection(), Text::Typesetter::RENDER_TEXT_AND_STYLES, true, Pixel::RGBA8888); // ignore the horizontal alignment
1083   Texture   texture = Texture::New(Dali::TextureType::TEXTURE_2D,
1084                                  data.GetPixelFormat(),
1085                                  data.GetWidth(),
1086                                  data.GetHeight());
1087   texture.Upload(data);
1088
1089   TextureSet textureSet = TextureSet::New();
1090   textureSet.SetTexture(0u, texture);
1091
1092   // Filter mode needs to be set to linear to produce better quality while scaling.
1093   Sampler sampler = Sampler::New();
1094   sampler.SetFilterMode(FilterMode::LINEAR, FilterMode::LINEAR);
1095   sampler.SetWrapMode(Dali::WrapMode::DEFAULT, Dali::WrapMode::REPEAT, Dali::WrapMode::DEFAULT); // Wrap the texture in the x direction
1096   textureSet.SetSampler(0u, sampler);
1097
1098   // Set parameters for scrolling
1099   Renderer renderer = static_cast<Internal::Visual::Base&>(GetImplementation(mVisual)).GetRenderer();
1100   mTextScroller->SetParameters(Self(), renderer, textureSet, controlSize, verifiedSize, wrapGap, direction, mController->GetHorizontalAlignment(), mController->GetVerticalAlignment());
1101   mController->SetTextElideEnabled(actualellipsis);
1102 }
1103
1104 void TextLabel::ScrollingFinished()
1105 {
1106   // Pure Virtual from TextScroller Interface
1107   DALI_LOG_INFO(gLogFilter, Debug::General, "TextLabel::ScrollingFinished\n");
1108   mController->SetAutoScrollEnabled(false);
1109   RequestTextRelayout();
1110 }
1111
1112 void TextLabel::OnLayoutDirectionChanged(Actor actor, LayoutDirection::Type type)
1113 {
1114   mController->ChangedLayoutDirection();
1115 }
1116
1117 void TextLabel::EmitTextFitChangedSignal()
1118 {
1119   Dali::Toolkit::TextLabel handle(GetOwner());
1120   mTextFitChangedSignal.Emit(handle);
1121 }
1122
1123 void TextLabel::OnAccessibilityStatusChanged()
1124 {
1125   CommonTextUtils::SynchronizeTextAnchorsInParent(Self(), mController, mAnchorActors);
1126 }
1127
1128 TextLabel::TextLabel()
1129 : Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT)),
1130   mRenderingBackend(DEFAULT_RENDERING_BACKEND),
1131   mTextUpdateNeeded(false)
1132 {
1133 }
1134
1135 TextLabel::~TextLabel()
1136 {
1137 }
1138
1139 Vector<Vector2> TextLabel::GetTextSize(const uint32_t startIndex, const uint32_t endIndex) const
1140 {
1141   return mController->GetTextSize(startIndex, endIndex);
1142 }
1143
1144 Vector<Vector2> TextLabel::GetTextPosition(const uint32_t startIndex, const uint32_t endIndex) const
1145 {
1146   return mController->GetTextPosition(startIndex, endIndex);
1147 }
1148
1149 std::string TextLabel::AccessibleImpl::GetNameRaw() const
1150 {
1151   auto self = Toolkit::TextLabel::DownCast(Self());
1152   return self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1153 }
1154
1155 Property::Index TextLabel::AccessibleImpl::GetNamePropertyIndex()
1156 {
1157   return Toolkit::TextLabel::Property::TEXT;
1158 }
1159
1160 std::string TextLabel::AccessibleImpl::GetText(size_t startOffset, size_t endOffset) const
1161 {
1162   if(endOffset <= startOffset)
1163   {
1164     return {};
1165   }
1166
1167   auto self = Toolkit::TextLabel::DownCast(Self());
1168   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1169
1170   if(startOffset > text.size() || endOffset > text.size())
1171   {
1172     return {};
1173   }
1174
1175   return text.substr(startOffset, endOffset - startOffset);
1176 }
1177
1178 size_t TextLabel::AccessibleImpl::GetCharacterCount() const
1179 {
1180   auto self = Toolkit::TextLabel::DownCast(Self());
1181   auto text = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1182
1183   return text.size();
1184 }
1185
1186 size_t TextLabel::AccessibleImpl::GetCursorOffset() const
1187 {
1188   return {};
1189 }
1190
1191 bool TextLabel::AccessibleImpl::SetCursorOffset(size_t offset)
1192 {
1193   return {};
1194 }
1195
1196 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetTextAtOffset(size_t offset, Dali::Accessibility::TextBoundary boundary) const
1197 {
1198   auto self     = Toolkit::TextLabel::DownCast(Self());
1199   auto text     = self.GetProperty(Toolkit::TextLabel::Property::TEXT).Get<std::string>();
1200   auto textSize = text.size();
1201
1202   auto range = Dali::Accessibility::Range{};
1203
1204   switch(boundary)
1205   {
1206     case Dali::Accessibility::TextBoundary::CHARACTER:
1207     {
1208       if(offset < textSize)
1209       {
1210         range.content     = text[offset];
1211         range.startOffset = offset;
1212         range.endOffset   = offset + 1;
1213       }
1214       break;
1215     }
1216     case Dali::Accessibility::TextBoundary::WORD:
1217     case Dali::Accessibility::TextBoundary::LINE:
1218     {
1219       auto textString = text.c_str();
1220       auto breaks     = std::vector<char>(textSize, 0);
1221
1222       if(boundary == Dali::Accessibility::TextBoundary::WORD)
1223       {
1224         Accessibility::Accessible::FindWordSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1225       }
1226       else
1227       {
1228         Accessibility::Accessible::FindLineSeparationsUtf8(reinterpret_cast<const utf8_t*>(textString), textSize, "", breaks.data());
1229       }
1230
1231       auto index   = 0u;
1232       auto counter = 0u;
1233       while(index < textSize && counter <= offset)
1234       {
1235         auto start = index;
1236         if(breaks[index])
1237         {
1238           while(breaks[index])
1239           {
1240             index++;
1241           }
1242           counter++;
1243         }
1244         else
1245         {
1246           if(boundary == Dali::Accessibility::TextBoundary::WORD)
1247           {
1248             index++;
1249           }
1250           if(boundary == Dali::Accessibility::TextBoundary::LINE)
1251           {
1252             counter++;
1253           }
1254         }
1255
1256         if((counter > 0) && ((counter - 1) == offset))
1257         {
1258           range.content     = text.substr(start, index - start + 1);
1259           range.startOffset = start;
1260           range.endOffset   = index + 1;
1261         }
1262
1263         if(boundary == Dali::Accessibility::TextBoundary::LINE)
1264         {
1265           index++;
1266         }
1267       }
1268       break;
1269     }
1270     case Dali::Accessibility::TextBoundary::SENTENCE:
1271     {
1272       /* not supported by default */
1273       break;
1274     }
1275     case Dali::Accessibility::TextBoundary::PARAGRAPH:
1276     {
1277       /* Paragraph is not supported by libunibreak library */
1278       break;
1279     }
1280     default:
1281       break;
1282   }
1283
1284   return range;
1285 }
1286
1287 Dali::Accessibility::Range TextLabel::AccessibleImpl::GetRangeOfSelection(size_t selectionIndex) const
1288 {
1289   // Since DALi supports only one selection indexes higher than 0 are ignored
1290   if(selectionIndex > 0)
1291   {
1292     return {};
1293   }
1294
1295   auto        self       = Toolkit::TextLabel::DownCast(Self());
1296   auto        controller = Dali::Toolkit::GetImpl(self).GetTextController();
1297   std::string value{};
1298   controller->RetrieveSelection(value);
1299   auto indices = controller->GetSelectionIndexes();
1300
1301   return {static_cast<size_t>(indices.first), static_cast<size_t>(indices.second), value};
1302 }
1303
1304 bool TextLabel::AccessibleImpl::RemoveSelection(size_t selectionIndex)
1305 {
1306   // Since DALi supports only one selection indexes higher than 0 are ignored
1307   if(selectionIndex > 0)
1308   {
1309     return false;
1310   }
1311
1312   auto self = Toolkit::TextLabel::DownCast(Self());
1313   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(0, 0);
1314   return true;
1315 }
1316
1317 bool TextLabel::AccessibleImpl::SetRangeOfSelection(size_t selectionIndex, size_t startOffset, size_t endOffset)
1318 {
1319   // Since DALi supports only one selection indexes higher than 0 are ignored
1320   if(selectionIndex > 0)
1321   {
1322     return false;
1323   }
1324
1325   auto self = Toolkit::TextLabel::DownCast(Self());
1326   Dali::Toolkit::GetImpl(self).GetTextController()->SetSelection(startOffset, endOffset);
1327   return true;
1328 }
1329
1330 int32_t TextLabel::AccessibleImpl::GetLinkCount() const
1331 {
1332   auto self = Toolkit::TextLabel::DownCast(Self());
1333   return Dali::Toolkit::GetImpl(self).mAnchorActors.size();
1334 }
1335
1336 Accessibility::Hyperlink* TextLabel::AccessibleImpl::GetLink(int32_t linkIndex) const
1337 {
1338   if(linkIndex < 0 || linkIndex >= GetLinkCount())
1339   {
1340     return nullptr;
1341   }
1342   auto self        = Toolkit::TextLabel::DownCast(Self());
1343   auto anchorActor = Dali::Toolkit::GetImpl(self).mAnchorActors[linkIndex];
1344   return dynamic_cast<Accessibility::Hyperlink*>(Dali::Accessibility::Accessible::Get(anchorActor));
1345 }
1346
1347 int32_t TextLabel::AccessibleImpl::GetLinkIndex(int32_t characterOffset) const
1348 {
1349   auto self       = Toolkit::TextLabel::DownCast(Self());
1350   auto controller = Dali::Toolkit::GetImpl(self).GetTextController();
1351   return controller->GetAnchorIndex(static_cast<size_t>(characterOffset));
1352 }
1353
1354 } // namespace Internal
1355
1356 } // namespace Toolkit
1357
1358 } // namespace Dali