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

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