dali-toolkit/internal/visuals/image/image-visual.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/visuals/image/image-visual.h>
  20
  21 // EXTERNAL HEADERS
  22 #include <dali/devel-api/adaptor-framework/image-loading.h>
  23 #include <dali/devel-api/common/stage.h>
  24 #include <dali/devel-api/rendering/renderer-devel.h>
  25 #include <dali/devel-api/rendering/texture-devel.h>
  26 #include <dali/devel-api/scripting/enum-helper.h>
  27 #include <dali/devel-api/scripting/scripting.h>
  28 #include <dali/integration-api/debug.h>
  29 #include <dali/public-api/actors/layer.h>
  30 #include <cstring> // for strlen()
  31
  32 // INTERNAL HEADERS
  33 #include <dali-toolkit/devel-api/visuals/image-visual-actions-devel.h>
  34 #include <dali-toolkit/internal/visuals/image-atlas-manager.h>
  35 #include <dali-toolkit/internal/visuals/image-visual-shader-factory.h>
  36 #include <dali-toolkit/internal/visuals/texture-manager-impl.h>
  37 #include <dali-toolkit/internal/visuals/visual-base-data-impl.h>
  38 #include <dali-toolkit/internal/visuals/visual-base-impl.h>
  39 #include <dali-toolkit/internal/visuals/visual-factory-cache.h>
  40 #include <dali-toolkit/internal/visuals/visual-factory-impl.h>
  41 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
  42 #include <dali-toolkit/internal/visuals/visual-url.h>
  43 #include <dali-toolkit/public-api/visuals/image-visual-properties.h>
  44 #include <dali-toolkit/public-api/visuals/visual-properties.h>
  45
  46 namespace Dali
  47 {
  48 namespace Toolkit
  49 {
  50 namespace Internal
  51 {
  52 namespace
  53 {
  54 // fitting modes
  55 DALI_ENUM_TO_STRING_TABLE_BEGIN(FITTING_MODE)
  56   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::FittingMode, SHRINK_TO_FIT)
  57   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::FittingMode, SCALE_TO_FILL)
  58   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::FittingMode, FIT_WIDTH)
  59   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::FittingMode, FIT_HEIGHT)
  60   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::FittingMode, DEFAULT)
  61 DALI_ENUM_TO_STRING_TABLE_END(FITTING_MODE)
  62
  63 // sampling modes
  64 DALI_ENUM_TO_STRING_TABLE_BEGIN(SAMPLING_MODE)
  65   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::SamplingMode, BOX)
  66   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::SamplingMode, NEAREST)
  67   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::SamplingMode, LINEAR)
  68   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::SamplingMode, BOX_THEN_NEAREST)
  69   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::SamplingMode, BOX_THEN_LINEAR)
  70   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::SamplingMode, NO_FILTER)
  71   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::SamplingMode, DONT_CARE)
  72 DALI_ENUM_TO_STRING_TABLE_END(SAMPLING_MODE)
  73
  74 // wrap modes
  75 DALI_ENUM_TO_STRING_TABLE_BEGIN(WRAP_MODE)
  76   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::WrapMode, DEFAULT)
  77   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::WrapMode, CLAMP_TO_EDGE)
  78   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::WrapMode, REPEAT)
  79   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::WrapMode, MIRRORED_REPEAT)
  80 DALI_ENUM_TO_STRING_TABLE_END(WRAP_MODE)
  81
  82 // load policies
  83 DALI_ENUM_TO_STRING_TABLE_BEGIN(LOAD_POLICY)
  84   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::Toolkit::ImageVisual::LoadPolicy, IMMEDIATE)
  85   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::Toolkit::ImageVisual::LoadPolicy, ATTACHED)
  86 DALI_ENUM_TO_STRING_TABLE_END(LOAD_POLICY)
  87
  88 // release policies
  89 DALI_ENUM_TO_STRING_TABLE_BEGIN(RELEASE_POLICY)
  90   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::Toolkit::ImageVisual::ReleasePolicy, DETACHED)
  91   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::Toolkit::ImageVisual::ReleasePolicy, DESTROYED)
  92   DALI_ENUM_TO_STRING_WITH_SCOPE(Dali::Toolkit::ImageVisual::ReleasePolicy, NEVER)
  93 DALI_ENUM_TO_STRING_TABLE_END(RELEASE_POLICY)
  94
  95 const Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f);
  96
  97 const float PIXEL_ALIGN_ON  = 1.0f;
  98 const float PIXEL_ALIGN_OFF = 0.0f;
  99
 100 Geometry CreateGeometry(VisualFactoryCache& factoryCache, ImageDimensions gridSize)
 101 {
 102   Geometry geometry;
 103
 104   if(gridSize == ImageDimensions(1, 1))
 105   {
 106     geometry = factoryCache.GetGeometry(VisualFactoryCache::QUAD_GEOMETRY);
 107   }
 108   else
 109   {
 110     geometry = VisualFactoryCache::CreateGridGeometry(gridSize);
 111   }
 112
 113   return geometry;
 114 }
 115
 116 } // unnamed namespace
 117
 118 ImageVisualPtr ImageVisual::New(VisualFactoryCache&       factoryCache,
 119                                 ImageVisualShaderFactory& shaderFactory,
 120                                 const VisualUrl&          imageUrl,
 121                                 const Property::Map&      properties,
 122                                 ImageDimensions           size,
 123                                 FittingMode::Type         fittingMode,
 124                                 Dali::SamplingMode::Type  samplingMode)
 125 {
 126   ImageVisualPtr imageVisualPtr(new ImageVisual(factoryCache, shaderFactory, imageUrl, size, fittingMode, samplingMode));
 127   imageVisualPtr->SetProperties(properties);
 128   imageVisualPtr->Initialize();
 129   return imageVisualPtr;
 130 }
 131
 132 ImageVisualPtr ImageVisual::New(VisualFactoryCache&       factoryCache,
 133                                 ImageVisualShaderFactory& shaderFactory,
 134                                 const VisualUrl&          imageUrl,
 135                                 ImageDimensions           size,
 136                                 FittingMode::Type         fittingMode,
 137                                 Dali::SamplingMode::Type  samplingMode)
 138 {
 139   ImageVisualPtr imageVisualPtr(new ImageVisual(factoryCache, shaderFactory, imageUrl, size, fittingMode, samplingMode));
 140   imageVisualPtr->Initialize();
 141   return imageVisualPtr;
 142 }
 143
 144 ImageVisual::ImageVisual(VisualFactoryCache&       factoryCache,
 145                          ImageVisualShaderFactory& shaderFactory,
 146                          const VisualUrl&          imageUrl,
 147                          ImageDimensions           size,
 148                          FittingMode::Type         fittingMode,
 149                          Dali::SamplingMode::Type  samplingMode)
 150 : Visual::Base(factoryCache, Visual::FittingMode::FILL, Toolkit::Visual::IMAGE),
 151   mPixelArea(FULL_TEXTURE_RECT),
 152   mPlacementActor(),
 153   mImageUrl(imageUrl),
 154   mMaskingData(),
 155   mDesiredSize(size),
 156   mTextureId(TextureManager::INVALID_TEXTURE_ID),
 157   mTextures(),
 158   mImageVisualShaderFactory(shaderFactory),
 159   mFittingMode(fittingMode),
 160   mSamplingMode(samplingMode),
 161   mWrapModeU(WrapMode::DEFAULT),
 162   mWrapModeV(WrapMode::DEFAULT),
 163   mLoadPolicy(Toolkit::ImageVisual::LoadPolicy::ATTACHED),
 164   mReleasePolicy(Toolkit::ImageVisual::ReleasePolicy::DETACHED),
 165   mAtlasRect(0.0f, 0.0f, 0.0f, 0.0f),
 166   mAtlasRectSize(0, 0),
 167   mLoadState(TextureManager::LoadState::NOT_STARTED),
 168   mAttemptAtlasing(false),
 169   mOrientationCorrection(true)
 170 {
 171   EnablePreMultipliedAlpha(mFactoryCache.GetPreMultiplyOnLoad());
 172 }
 173
 174 ImageVisual::~ImageVisual()
 175 {
 176   if(Stage::IsInstalled())
 177   {
 178     if(mMaskingData)
 179     {
 180       // TextureManager could have been deleted before the actor that contains this
 181       // ImageVisual is destroyed (e.g. due to stage shutdown). Ensure the stage
 182       // is still valid before accessing texture manager.
 183       if(mMaskingData->mAlphaMaskId != TextureManager::INVALID_TEXTURE_ID)
 184       {
 185         TextureManager& textureManager = mFactoryCache.GetTextureManager();
 186         textureManager.Remove(mMaskingData->mAlphaMaskId, this);
 187       }
 188     }
 189
 190     if(mImageUrl.IsValid())
 191     {
 192       // Decrease reference count of External Resources :
 193       // EncodedImageBuffer or ExternalTextures.
 194       // Ensure the stage is still valid before accessing texture manager.
 195       if(mImageUrl.GetProtocolType() == VisualUrl::TEXTURE)
 196       {
 197         TextureManager& textureManager = mFactoryCache.GetTextureManager();
 198         textureManager.RemoveExternalTexture(mImageUrl.GetUrl());
 199       }
 200       else if(mImageUrl.IsBufferResource())
 201       {
 202         TextureManager& textureManager = mFactoryCache.GetTextureManager();
 203         textureManager.RemoveExternalEncodedImageBuffer(mImageUrl.GetUrl());
 204       }
 205     }
 206
 207     // ImageVisual destroyed so remove texture unless ReleasePolicy is set to never release
 208     if((mTextureId != TextureManager::INVALID_TEXTURE_ID) && (mReleasePolicy != Toolkit::ImageVisual::ReleasePolicy::NEVER))
 209     {
 210       RemoveTexture();
 211     }
 212   }
 213 }
 214
 215 void ImageVisual::DoSetProperties(const Property::Map& propertyMap)
 216 {
 217   // Url is already received in constructor
 218   for(Property::Map::SizeType iter = 0; iter < propertyMap.Count(); ++iter)
 219   {
 220     KeyValuePair keyValue = propertyMap.GetKeyValue(iter);
 221     if(keyValue.first.type == Property::Key::INDEX)
 222     {
 223       DoSetProperty(keyValue.first.indexKey, keyValue.second);
 224     }
 225     else
 226     {
 227       if(keyValue.first == IMAGE_FITTING_MODE)
 228       {
 229         DoSetProperty(Toolkit::ImageVisual::Property::FITTING_MODE, keyValue.second);
 230       }
 231       else if(keyValue.first == IMAGE_SAMPLING_MODE)
 232       {
 233         DoSetProperty(Toolkit::ImageVisual::Property::SAMPLING_MODE, keyValue.second);
 234       }
 235       else if(keyValue.first == IMAGE_DESIRED_WIDTH)
 236       {
 237         DoSetProperty(Toolkit::ImageVisual::Property::DESIRED_WIDTH, keyValue.second);
 238       }
 239       else if(keyValue.first == IMAGE_DESIRED_HEIGHT)
 240       {
 241         DoSetProperty(Toolkit::ImageVisual::Property::DESIRED_HEIGHT, keyValue.second);
 242       }
 243       else if(keyValue.first == PIXEL_AREA_UNIFORM_NAME)
 244       {
 245         DoSetProperty(Toolkit::ImageVisual::Property::PIXEL_AREA, keyValue.second);
 246       }
 247       else if(keyValue.first == IMAGE_WRAP_MODE_U)
 248       {
 249         DoSetProperty(Toolkit::ImageVisual::Property::WRAP_MODE_U, keyValue.second);
 250       }
 251       else if(keyValue.first == IMAGE_WRAP_MODE_V)
 252       {
 253         DoSetProperty(Toolkit::ImageVisual::Property::WRAP_MODE_V, keyValue.second);
 254       }
 255       else if(keyValue.first == SYNCHRONOUS_LOADING)
 256       {
 257         DoSetProperty(Toolkit::ImageVisual::Property::SYNCHRONOUS_LOADING, keyValue.second);
 258       }
 259       else if(keyValue.first == IMAGE_ATLASING)
 260       {
 261         DoSetProperty(Toolkit::ImageVisual::Property::ATLASING, keyValue.second);
 262       }
 263       else if(keyValue.first == ALPHA_MASK_URL)
 264       {
 265         DoSetProperty(Toolkit::ImageVisual::Property::ALPHA_MASK_URL, keyValue.second);
 266       }
 267       else if(keyValue.first == MASK_CONTENT_SCALE_NAME)
 268       {
 269         DoSetProperty(Toolkit::ImageVisual::Property::MASK_CONTENT_SCALE, keyValue.second);
 270       }
 271       else if(keyValue.first == CROP_TO_MASK_NAME)
 272       {
 273         DoSetProperty(Toolkit::ImageVisual::Property::CROP_TO_MASK, keyValue.second);
 274       }
 275       else if(keyValue.first == LOAD_POLICY_NAME)
 276       {
 277         DoSetProperty(Toolkit::ImageVisual::Property::LOAD_POLICY, keyValue.second);
 278       }
 279       else if(keyValue.first == RELEASE_POLICY_NAME)
 280       {
 281         DoSetProperty(Toolkit::ImageVisual::Property::RELEASE_POLICY, keyValue.second);
 282       }
 283       else if(keyValue.first == ORIENTATION_CORRECTION_NAME)
 284       {
 285         DoSetProperty(Toolkit::ImageVisual::Property::ORIENTATION_CORRECTION, keyValue.second);
 286       }
 287     }
 288   }
 289   // Load image immediately if LOAD_POLICY requires it
 290   if(mLoadPolicy == Toolkit::ImageVisual::LoadPolicy::IMMEDIATE)
 291   {
 292     auto attemptAtlasing = AttemptAtlasing();
 293     LoadTexture(attemptAtlasing, mAtlasRect, mTextures, mOrientationCorrection, TextureManager::ReloadPolicy::CACHED);
 294   }
 295 }
 296
 297 void ImageVisual::DoSetProperty(Property::Index index, const Property::Value& value)
 298 {
 299   switch(index)
 300   {
 301     case Toolkit::ImageVisual::Property::SYNCHRONOUS_LOADING:
 302     {
 303       bool sync = false;
 304       if(value.Get(sync))
 305       {
 306         if(sync)
 307         {
 308           mImpl->mFlags |= Impl::IS_SYNCHRONOUS_RESOURCE_LOADING;
 309         }
 310         else
 311         {
 312           mImpl->mFlags &= ~Impl::IS_SYNCHRONOUS_RESOURCE_LOADING;
 313         }
 314       }
 315       else
 316       {
 317         DALI_LOG_ERROR("ImageVisual: synchronousLoading property has incorrect type\n");
 318       }
 319       break;
 320     }
 321
 322     case Toolkit::ImageVisual::Property::DESIRED_WIDTH:
 323     {
 324       float desiredWidth = 0.0f;
 325       if(value.Get(desiredWidth))
 326       {
 327         mDesiredSize.SetWidth(desiredWidth);
 328       }
 329       else
 330       {
 331         DALI_LOG_ERROR("ImageVisual: desiredWidth property has incorrect type\n");
 332       }
 333       break;
 334     }
 335
 336     case Toolkit::ImageVisual::Property::DESIRED_HEIGHT:
 337     {
 338       float desiredHeight = 0.0f;
 339       if(value.Get(desiredHeight))
 340       {
 341         mDesiredSize.SetHeight(desiredHeight);
 342       }
 343       else
 344       {
 345         DALI_LOG_ERROR("ImageVisual: desiredHeight property has incorrect type\n");
 346       }
 347       break;
 348     }
 349
 350     case Toolkit::ImageVisual::Property::FITTING_MODE:
 351     {
 352       int fittingMode = 0;
 353       Scripting::GetEnumerationProperty(value, FITTING_MODE_TABLE, FITTING_MODE_TABLE_COUNT, fittingMode);
 354       mFittingMode = Dali::FittingMode::Type(fittingMode);
 355       break;
 356     }
 357
 358     case Toolkit::ImageVisual::Property::SAMPLING_MODE:
 359     {
 360       int samplingMode = 0;
 361       Scripting::GetEnumerationProperty(value, SAMPLING_MODE_TABLE, SAMPLING_MODE_TABLE_COUNT, samplingMode);
 362       mSamplingMode = Dali::SamplingMode::Type(samplingMode);
 363       break;
 364     }
 365
 366     case Toolkit::ImageVisual::Property::PIXEL_AREA:
 367     {
 368       value.Get(mPixelArea);
 369       break;
 370     }
 371
 372     case Toolkit::ImageVisual::Property::WRAP_MODE_U:
 373     {
 374       int wrapMode = 0;
 375       Scripting::GetEnumerationProperty(value, WRAP_MODE_TABLE, WRAP_MODE_TABLE_COUNT, wrapMode);
 376       mWrapModeU = Dali::WrapMode::Type(wrapMode);
 377       break;
 378     }
 379
 380     case Toolkit::ImageVisual::Property::WRAP_MODE_V:
 381     {
 382       int wrapMode = 0;
 383       Scripting::GetEnumerationProperty(value, WRAP_MODE_TABLE, WRAP_MODE_TABLE_COUNT, wrapMode);
 384       mWrapModeV = Dali::WrapMode::Type(wrapMode);
 385       break;
 386     }
 387
 388     case Toolkit::ImageVisual::Property::ATLASING:
 389     {
 390       value.Get(mAttemptAtlasing);
 391       break;
 392     }
 393
 394     case Toolkit::ImageVisual::Property::ALPHA_MASK_URL:
 395     {
 396       std::string alphaUrl = "";
 397       if(value.Get(alphaUrl))
 398       {
 399         AllocateMaskData();
 400         mMaskingData->mAlphaMaskUrl = alphaUrl;
 401       }
 402       break;
 403     }
 404
 405     case Toolkit::ImageVisual::Property::MASK_CONTENT_SCALE:
 406     {
 407       float scale = 1.0f;
 408       if(value.Get(scale))
 409       {
 410         AllocateMaskData();
 411         mMaskingData->mContentScaleFactor = scale;
 412       }
 413       break;
 414     }
 415
 416     case Toolkit::ImageVisual::Property::CROP_TO_MASK:
 417     {
 418       bool crop = false;
 419       if(value.Get(crop))
 420       {
 421         AllocateMaskData();
 422         mMaskingData->mCropToMask = crop;
 423       }
 424       break;
 425     }
 426
 427     case Toolkit::ImageVisual::Property::RELEASE_POLICY:
 428     {
 429       int releasePolicy = 0;
 430       Scripting::GetEnumerationProperty(value, RELEASE_POLICY_TABLE, RELEASE_POLICY_TABLE_COUNT, releasePolicy);
 431       mReleasePolicy = Toolkit::ImageVisual::ReleasePolicy::Type(releasePolicy);
 432       break;
 433     }
 434
 435     case Toolkit::ImageVisual::Property::LOAD_POLICY:
 436     {
 437       int loadPolicy = 0;
 438       Scripting::GetEnumerationProperty(value, LOAD_POLICY_TABLE, LOAD_POLICY_TABLE_COUNT, loadPolicy);
 439       mLoadPolicy = Toolkit::ImageVisual::LoadPolicy::Type(loadPolicy);
 440       break;
 441     }
 442     case Toolkit::ImageVisual::Property::ORIENTATION_CORRECTION:
 443     {
 444       bool orientationCorrection(mOrientationCorrection);
 445       if(value.Get(orientationCorrection))
 446       {
 447         mOrientationCorrection = orientationCorrection;
 448       }
 449       break;
 450     }
 451   }
 452 }
 453
 454 void ImageVisual::AllocateMaskData()
 455 {
 456   if(!mMaskingData)
 457   {
 458     mMaskingData.reset(new TextureManager::MaskingData());
 459   }
 460 }
 461
 462 void ImageVisual::GetNaturalSize(Vector2& naturalSize)
 463 {
 464   if(mDesiredSize.GetWidth() > 0 && mDesiredSize.GetHeight() > 0)
 465   {
 466     naturalSize.x = mDesiredSize.GetWidth();
 467     naturalSize.y = mDesiredSize.GetHeight();
 468     return;
 469   }
 470   else if(mImpl->mRenderer) // Check if we have a loaded image
 471   {
 472     if(mImpl->mFlags & Impl::IS_ATLASING_APPLIED)
 473     {
 474       naturalSize.x = mAtlasRectSize.GetWidth();
 475       naturalSize.y = mAtlasRectSize.GetHeight();
 476       return;
 477     }
 478
 479     auto textureSet = mImpl->mRenderer.GetTextures();
 480     if(textureSet)
 481     {
 482       auto texture = textureSet.GetTexture(0);
 483       if(texture)
 484       {
 485         naturalSize.x = texture.GetWidth();
 486         naturalSize.y = texture.GetHeight();
 487         return;
 488       }
 489     }
 490   }
 491
 492   if(mMaskingData != NULL && mMaskingData->mAlphaMaskUrl.IsValid() &&
 493      mMaskingData->mCropToMask)
 494   {
 495     ImageDimensions dimensions = Dali::GetClosestImageSize(mMaskingData->mAlphaMaskUrl.GetUrl());
 496     if(dimensions != ImageDimensions(0, 0))
 497     {
 498       naturalSize.x = dimensions.GetWidth();
 499       naturalSize.y = dimensions.GetHeight();
 500     }
 501     return;
 502   }
 503   else if(mImageUrl.IsValid())
 504   {
 505     if(mImageUrl.GetProtocolType() == VisualUrl::LOCAL)
 506     {
 507       ImageDimensions dimensions = Dali::GetClosestImageSize(mImageUrl.GetUrl());
 508
 509       if(dimensions != ImageDimensions(0, 0))
 510       {
 511         naturalSize.x = dimensions.GetWidth();
 512         naturalSize.y = dimensions.GetHeight();
 513       }
 514       else
 515       {
 516         Texture brokenImage = mFactoryCache.GetBrokenVisualImage();
 517
 518         naturalSize.x = brokenImage.GetWidth();
 519         naturalSize.y = brokenImage.GetWidth();
 520       }
 521       return;
 522     }
 523   }
 524   naturalSize = Vector2::ZERO;
 525 }
 526
 527 void ImageVisual::OnInitialize()
 528 {
 529   Geometry geometry;
 530
 531   // Get the geometry
 532   if(mImpl->mCustomShader)
 533   {
 534     geometry = CreateGeometry(mFactoryCache, mImpl->mCustomShader->mGridSize);
 535   }
 536   else // Get any geometry associated with the texture
 537   {
 538     TextureManager& textureManager = mFactoryCache.GetTextureManager();
 539
 540     uint32_t firstElementCount{0u};
 541     uint32_t secondElementCount{0u};
 542     geometry = textureManager.GetRenderGeometry(mTextureId, firstElementCount, secondElementCount);
 543
 544     if(!firstElementCount && !secondElementCount) // Otherwise use quad
 545     {
 546       geometry = CreateGeometry(mFactoryCache, ImageDimensions(1, 1));
 547     }
 548   }
 549
 550   // Increase reference count of External Resources :
 551   // EncodedImageBuffer or ExternalTextures.
 552   // Reference count will be decreased at destructor of the visual.
 553   if(mImageUrl.IsValid() && (mImageUrl.IsBufferResource() || mImageUrl.GetProtocolType() == VisualUrl::TEXTURE))
 554   {
 555     TextureManager& textureManager = mFactoryCache.GetTextureManager();
 556     textureManager.UseExternalResource(mImageUrl.GetUrl());
 557   }
 558
 559   Shader shader = GenerateShader();
 560
 561   // Create the renderer
 562   mImpl->mRenderer = Renderer::New(geometry, shader);
 563
 564   //Register transform properties
 565   mImpl->mTransform.RegisterUniforms(mImpl->mRenderer, Direction::LEFT_TO_RIGHT);
 566
 567   EnablePreMultipliedAlpha(IsPreMultipliedAlphaEnabled());
 568 }
 569
 570 void ImageVisual::LoadTexture(bool& atlasing, Vector4& atlasRect, TextureSet& textures, bool orientationCorrection, TextureManager::ReloadPolicy forceReload)
 571 {
 572   TextureManager& textureManager = mFactoryCache.GetTextureManager();
 573
 574   ImageAtlasManagerPtr atlasManager        = nullptr;
 575   AtlasUploadObserver* atlasUploadObserver = nullptr;
 576   auto                 textureObserver     = this;
 577
 578   if(atlasing)
 579   {
 580     atlasManager        = mFactoryCache.GetAtlasManager();
 581     atlasUploadObserver = this;
 582   }
 583
 584   auto preMultiplyOnLoad = IsPreMultipliedAlphaEnabled() && !mImpl->mCustomShader
 585                              ? TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD
 586                              : TextureManager::MultiplyOnLoad::LOAD_WITHOUT_MULTIPLY;
 587
 588   bool synchronousLoading = IsSynchronousLoadingRequired();
 589   bool loadingStatus;
 590
 591   textures = textureManager.LoadTexture(mImageUrl, mDesiredSize, mFittingMode, mSamplingMode, mMaskingData, synchronousLoading, mTextureId, atlasRect, mAtlasRectSize, atlasing, loadingStatus, mWrapModeU, mWrapModeV, textureObserver, atlasUploadObserver, atlasManager, mOrientationCorrection, forceReload, preMultiplyOnLoad);
 592
 593   if(textures)
 594   {
 595     if(loadingStatus)
 596     {
 597       mLoadState = TextureManager::LoadState::LOADING;
 598     }
 599     else
 600     {
 601       mLoadState = TextureManager::LoadState::LOAD_FINISHED;
 602     }
 603
 604     EnablePreMultipliedAlpha(preMultiplyOnLoad == TextureManager::MultiplyOnLoad::MULTIPLY_ON_LOAD);
 605   }
 606   else if(synchronousLoading)
 607   {
 608     // Synchronous loading is failed
 609     mLoadState = TextureManager::LoadState::LOAD_FAILED;
 610   }
 611
 612   if(atlasing) // Flag needs to be set before creating renderer
 613   {
 614     mImpl->mFlags |= Impl::IS_ATLASING_APPLIED;
 615   }
 616   else
 617   {
 618     mImpl->mFlags &= ~Impl::IS_ATLASING_APPLIED;
 619   }
 620 }
 621
 622 bool ImageVisual::AttemptAtlasing()
 623 {
 624   return (!mImpl->mCustomShader && (mImageUrl.IsLocalResource() || mImageUrl.IsBufferResource()) && mAttemptAtlasing);
 625 }
 626
 627 void ImageVisual::InitializeRenderer()
 628 {
 629   auto attemptAtlasing = AttemptAtlasing();
 630
 631   // Load Texture if mTextures is empty.
 632   // mTextures is already set, the mTexture can be used to create Renderer.
 633   // There are two cases mTextures is empty.
 634   // 1. mTextureId == TextureManager::INVALID_TEXTURE_ID
 635   //  - Visual is on stage with LoadPolicy::ATTACHED
 636   // 2. mTextureId != TextureManager::INVALID_TEXTURE_ID
 637   //  - If ReleasePolicy is DESTROYED, InitializeRenderer called every on stage called.
 638   //  - Then every resources those contained in Visual are Reset but mTextureId is remained when the Off stage time,
 639   //  - So, mTextures needed to be get from texture manager to created resources like mImpl->mRenderer.
 640   if(!mTextures)
 641   {
 642     if(mTextureId == TextureManager::INVALID_TEXTURE_ID)
 643     {
 644       LoadTexture(attemptAtlasing, mAtlasRect, mTextures, mOrientationCorrection, TextureManager::ReloadPolicy::CACHED);
 645     }
 646     else
 647     {
 648       mTextures = mFactoryCache.GetTextureManager().GetTextureSet(mTextureId);
 649     }
 650   }
 651
 652   if(mTextures)
 653   {
 654     mImpl->mRenderer.SetTextures(mTextures);
 655     if(DevelTexture::IsNative(mTextures.GetTexture(0)))
 656     {
 657       UpdateShader();
 658     }
 659     mTextures.Reset(); // Visual should not keep a handle to the texture after this point.
 660   }
 661
 662   if(attemptAtlasing) // the texture is packed inside atlas
 663   {
 664     mImpl->mRenderer.RegisterProperty(ATLAS_RECT_UNIFORM_NAME, mAtlasRect);
 665
 666     bool defaultWrapMode = mWrapModeU <= WrapMode::CLAMP_TO_EDGE && mWrapModeV <= WrapMode::CLAMP_TO_EDGE;
 667
 668     if(!defaultWrapMode) // custom wrap mode
 669     {
 670       Vector2 wrapMode(mWrapModeU - WrapMode::CLAMP_TO_EDGE, mWrapModeV - WrapMode::CLAMP_TO_EDGE);
 671       wrapMode.Clamp(Vector2::ZERO, Vector2(2.f, 2.f));
 672       mImpl->mRenderer.RegisterProperty(WRAP_MODE_UNIFORM_NAME, wrapMode);
 673     }
 674   }
 675 }
 676
 677 void ImageVisual::DoSetOnScene(Actor& actor)
 678 {
 679   if(mImageUrl.IsValid())
 680   {
 681     InitializeRenderer();
 682   }
 683
 684   if(!mImpl->mRenderer)
 685   {
 686     return;
 687   }
 688
 689   mPlacementActor = actor;
 690   // Search the Actor tree to find if Layer UI behaviour set.
 691   Layer layer = actor.GetLayer();
 692   if(layer && layer.GetProperty<Layer::Behavior>(Layer::Property::BEHAVIOR) == Layer::LAYER_3D)
 693   {
 694     // Layer 3D set, do not align pixels
 695     mImpl->mRenderer.RegisterProperty(PIXEL_ALIGNED_UNIFORM_NAME, PIXEL_ALIGN_OFF);
 696   }
 697
 698   if(mPixelArea != FULL_TEXTURE_RECT)
 699   {
 700     mImpl->mRenderer.RegisterProperty(PIXEL_AREA_UNIFORM_NAME, mPixelArea);
 701   }
 702
 703   if(mLoadState == TextureManager::LoadState::LOAD_FINISHED)
 704   {
 705     actor.AddRenderer(mImpl->mRenderer);
 706     mPlacementActor.Reset();
 707
 708     // Image loaded and ready to display
 709     ResourceReady(Toolkit::Visual::ResourceStatus::READY);
 710   }
 711   else if(mLoadState == TextureManager::LoadState::LOAD_FAILED)
 712   {
 713     Texture brokenImage = mFactoryCache.GetBrokenVisualImage();
 714
 715     mTextures = TextureSet::New();
 716     mTextures.SetTexture(0u, brokenImage);
 717     mImpl->mRenderer.SetTextures(mTextures);
 718
 719     actor.AddRenderer(mImpl->mRenderer);
 720     mPlacementActor.Reset();
 721
 722     ResourceReady(Toolkit::Visual::ResourceStatus::FAILED);
 723   }
 724 }
 725
 726 void ImageVisual::DoSetOffScene(Actor& actor)
 727 {
 728   // Visual::Base::SetOffScene only calls DoSetOffScene if mRenderer exists (is on onstage)
 729
 730   // Image release is dependent on the ReleasePolicy, renderer is removed.
 731   actor.RemoveRenderer(mImpl->mRenderer);
 732   if(mReleasePolicy == Toolkit::ImageVisual::ReleasePolicy::DETACHED)
 733   {
 734     RemoveTexture(); // If INVALID_TEXTURE_ID then removal will be attempted on atlas
 735     mImpl->mResourceStatus = Toolkit::Visual::ResourceStatus::PREPARING;
 736
 737     TextureSet textureSet = TextureSet::New();
 738     mImpl->mRenderer.SetTextures(textureSet);
 739
 740     mLoadState = TextureManager::LoadState::NOT_STARTED;
 741   }
 742
 743   mPlacementActor.Reset();
 744 }
 745
 746 void ImageVisual::DoCreatePropertyMap(Property::Map& map) const
 747 {
 748   map.Clear();
 749   map.Insert(Toolkit::Visual::Property::TYPE, Toolkit::Visual::IMAGE);
 750
 751   bool sync = IsSynchronousLoadingRequired();
 752   map.Insert(SYNCHRONOUS_LOADING, sync);
 753   if(mImageUrl.IsValid())
 754   {
 755     map.Insert(Toolkit::ImageVisual::Property::URL, mImageUrl.GetUrl());
 756     map.Insert(Toolkit::ImageVisual::Property::DESIRED_WIDTH, mDesiredSize.GetWidth());
 757     map.Insert(Toolkit::ImageVisual::Property::DESIRED_HEIGHT, mDesiredSize.GetHeight());
 758   }
 759
 760   map.Insert(Toolkit::ImageVisual::Property::FITTING_MODE, mFittingMode);
 761   map.Insert(Toolkit::ImageVisual::Property::SAMPLING_MODE, mSamplingMode);
 762
 763   map.Insert(Toolkit::ImageVisual::Property::PIXEL_AREA, mPixelArea);
 764   map.Insert(Toolkit::ImageVisual::Property::WRAP_MODE_U, mWrapModeU);
 765   map.Insert(Toolkit::ImageVisual::Property::WRAP_MODE_V, mWrapModeV);
 766
 767   map.Insert(Toolkit::ImageVisual::Property::ATLASING, mAttemptAtlasing);
 768
 769   if(mMaskingData != NULL)
 770   {
 771     map.Insert(Toolkit::ImageVisual::Property::ALPHA_MASK_URL, mMaskingData->mAlphaMaskUrl.GetUrl());
 772     map.Insert(Toolkit::ImageVisual::Property::MASK_CONTENT_SCALE, mMaskingData->mContentScaleFactor);
 773     map.Insert(Toolkit::ImageVisual::Property::CROP_TO_MASK, mMaskingData->mCropToMask);
 774   }
 775
 776   map.Insert(Toolkit::ImageVisual::Property::LOAD_POLICY, mLoadPolicy);
 777   map.Insert(Toolkit::ImageVisual::Property::RELEASE_POLICY, mReleasePolicy);
 778   map.Insert(Toolkit::ImageVisual::Property::ORIENTATION_CORRECTION, mOrientationCorrection);
 779 }
 780
 781 void ImageVisual::DoCreateInstancePropertyMap(Property::Map& map) const
 782 {
 783   map.Clear();
 784   map.Insert(Toolkit::Visual::Property::TYPE, Toolkit::Visual::IMAGE);
 785   if(mImageUrl.IsValid())
 786   {
 787     map.Insert(Toolkit::ImageVisual::Property::DESIRED_WIDTH, mDesiredSize.GetWidth());
 788     map.Insert(Toolkit::ImageVisual::Property::DESIRED_HEIGHT, mDesiredSize.GetHeight());
 789   }
 790 }
 791
 792 void ImageVisual::OnDoAction(const Dali::Property::Index actionName, const Dali::Property::Value& attributes)
 793 {
 794   // Check if action is valid for this visual type and perform action if possible
 795
 796   switch(actionName)
 797   {
 798     case DevelImageVisual::Action::RELOAD:
 799     {
 800       auto attemptAtlasing = AttemptAtlasing();
 801       LoadTexture(attemptAtlasing, mAtlasRect, mTextures, mOrientationCorrection, TextureManager::ReloadPolicy::FORCED);
 802       break;
 803     }
 804   }
 805 }
 806
 807 void ImageVisual::OnSetTransform()
 808 {
 809   if(mImpl->mRenderer)
 810   {
 811     mImpl->mTransform.RegisterUniforms(mImpl->mRenderer, Direction::LEFT_TO_RIGHT);
 812   }
 813 }
 814
 815 bool ImageVisual::IsResourceReady() const
 816 {
 817   return (mImpl->mResourceStatus == Toolkit::Visual::ResourceStatus::READY ||
 818           mImpl->mResourceStatus == Toolkit::Visual::ResourceStatus::FAILED);
 819 }
 820
 821 void ImageVisual::UpdateShader()
 822 {
 823   if(mImpl->mRenderer)
 824   {
 825     Shader shader = GenerateShader();
 826     mImpl->mRenderer.SetShader(shader);
 827   }
 828 }
 829
 830 // From existing atlas manager
 831 void ImageVisual::UploadCompleted()
 832 {
 833   // Texture has been uploaded. If weak handle is holding a placement actor,
 834   // it is the time to add the renderer to actor.
 835   Actor actor = mPlacementActor.GetHandle();
 836   if(actor)
 837   {
 838     mImpl->mRenderer.RegisterProperty(ATLAS_RECT_UNIFORM_NAME, mAtlasRect);
 839     actor.AddRenderer(mImpl->mRenderer);
 840     // reset the weak handle so that the renderer only get added to actor once
 841     mPlacementActor.Reset();
 842   }
 843
 844   // Image loaded
 845   ResourceReady(Toolkit::Visual::ResourceStatus::READY);
 846   mLoadState = TextureManager::LoadState::LOAD_FINISHED;
 847 }
 848
 849 // From Texture Manager
 850 void ImageVisual::UploadComplete(bool loadingSuccess, int32_t textureId, TextureSet textureSet, bool usingAtlas, const Vector4& atlasRectangle, bool preMultiplied)
 851 {
 852   Toolkit::Visual::ResourceStatus resourceStatus;
 853   if(mImpl->mRenderer)
 854   {
 855     if(usingAtlas)
 856     {
 857       mImpl->mRenderer.RegisterProperty(ATLAS_RECT_UNIFORM_NAME, mAtlasRect);
 858     }
 859
 860     EnablePreMultipliedAlpha(preMultiplied);
 861
 862     Actor actor = mPlacementActor.GetHandle();
 863     if(actor)
 864     {
 865       actor.AddRenderer(mImpl->mRenderer);
 866       // reset the weak handle so that the renderer only get added to actor once
 867       mPlacementActor.Reset();
 868     }
 869
 870     if(!loadingSuccess)
 871     {
 872       Texture brokenImage = mFactoryCache.GetBrokenVisualImage();
 873
 874       textureSet = TextureSet::New();
 875       textureSet.SetTexture(0u, brokenImage);
 876       mImpl->mRenderer.SetTextures(textureSet);
 877     }
 878
 879     Sampler sampler = Sampler::New();
 880     sampler.SetWrapMode(mWrapModeU, mWrapModeV);
 881     textureSet.SetSampler(0u, sampler);
 882     mImpl->mRenderer.SetTextures(textureSet);
 883   }
 884
 885   // Storing TextureSet needed when renderer staged.
 886   if(!mImpl->mRenderer)
 887   {
 888     mTextures = textureSet;
 889   }
 890
 891   // Image loaded, set status regardless of staged status.
 892   if(loadingSuccess)
 893   {
 894     resourceStatus = Toolkit::Visual::ResourceStatus::READY;
 895     mLoadState     = TextureManager::LoadState::LOAD_FINISHED;
 896   }
 897   else
 898   {
 899     resourceStatus = Toolkit::Visual::ResourceStatus::FAILED;
 900     mLoadState     = TextureManager::LoadState::LOAD_FAILED;
 901   }
 902
 903   // use geometry if needed
 904   if(loadingSuccess)
 905   {
 906     uint32_t firstElementCount{0u};
 907     uint32_t secondElementCount{0u};
 908     auto     geometry = mFactoryCache.GetTextureManager().GetRenderGeometry(mTextureId, firstElementCount, secondElementCount);
 909     if(mImpl->mRenderer && geometry)
 910     {
 911       mImpl->mRenderer.SetGeometry(geometry);
 912       Dali::DevelRenderer::DrawCommand drawCommand{};
 913       drawCommand.drawType = DevelRenderer::DrawType::INDEXED;
 914
 915       if(firstElementCount)
 916       {
 917         drawCommand.firstIndex   = 0;
 918         drawCommand.elementCount = firstElementCount;
 919         drawCommand.queue        = DevelRenderer::RENDER_QUEUE_OPAQUE;
 920         DevelRenderer::AddDrawCommand(mImpl->mRenderer, drawCommand);
 921       }
 922
 923       if(secondElementCount)
 924       {
 925         drawCommand.firstIndex   = firstElementCount;
 926         drawCommand.elementCount = secondElementCount;
 927         drawCommand.queue        = DevelRenderer::RENDER_QUEUE_TRANSPARENT;
 928         DevelRenderer::AddDrawCommand(mImpl->mRenderer, drawCommand);
 929       }
 930     }
 931   }
 932
 933   // Signal to observers ( control ) that resources are ready. Must be all resources.
 934   ResourceReady(resourceStatus);
 935 }
 936
 937 void ImageVisual::RemoveTexture()
 938 {
 939   if(mTextureId != TextureManager::INVALID_TEXTURE_ID)
 940   {
 941     mFactoryCache.GetTextureManager().Remove(mTextureId, this);
 942     mTextureId = TextureManager::INVALID_TEXTURE_ID;
 943   }
 944   else
 945   {
 946     Vector4         atlasRect(0.f, 0.f, 1.f, 1.f);
 947     Property::Index index = mImpl->mRenderer.GetPropertyIndex(ATLAS_RECT_UNIFORM_NAME);
 948     if(index != Property::INVALID_INDEX)
 949     {
 950       Property::Value atlasRectValue = mImpl->mRenderer.GetProperty(index);
 951       atlasRectValue.Get(atlasRect);
 952     }
 953
 954     TextureSet textureSet = mImpl->mRenderer.GetTextures();
 955
 956     if(index != Property::INVALID_INDEX)
 957     {
 958       mFactoryCache.GetAtlasManager()->Remove(textureSet, atlasRect);
 959     }
 960   }
 961 }
 962
 963 Shader ImageVisual::GenerateShader() const
 964 {
 965   Shader shader;
 966
 967   std::string_view vertexShaderView;
 968   bool             usesWholeTexture = true;
 969   if(mImpl->mCustomShader && !mImpl->mCustomShader->mVertexShader.empty())
 970   {
 971     vertexShaderView = mImpl->mCustomShader->mVertexShader;
 972     usesWholeTexture = false; // Impossible to tell.
 973   }
 974   else
 975   {
 976     vertexShaderView = mImageVisualShaderFactory.GetVertexShaderSource();
 977   }
 978
 979   std::string_view fragmentShaderView;
 980   if(mImpl->mCustomShader && !mImpl->mCustomShader->mFragmentShader.empty())
 981   {
 982     fragmentShaderView = mImpl->mCustomShader->mFragmentShader;
 983   }
 984   else
 985   {
 986     fragmentShaderView = mImageVisualShaderFactory.GetFragmentShaderSource();
 987   }
 988
 989   // If the texture is native, we may need to change prefix and sampler in
 990   // the fragment shader
 991   bool        modifiedFragmentShader = false;
 992   std::string fragmentShaderString;
 993   if(mTextures && DevelTexture::IsNative(mTextures.GetTexture(0)))
 994   {
 995     Texture nativeTexture  = mTextures.GetTexture(0);
 996     fragmentShaderString   = std::string(fragmentShaderView);
 997     modifiedFragmentShader = DevelTexture::ApplyNativeFragmentShader(nativeTexture, fragmentShaderString);
 998     fragmentShaderView     = fragmentShaderString;
 999   }
1000
1001   const bool useStandardShader = !mImpl->mCustomShader && !modifiedFragmentShader;
1002   if(useStandardShader)
1003   {
1004     // Create and cache the standard shader
1005     shader = mImageVisualShaderFactory.GetShader(
1006       mFactoryCache,
1007       mImpl->mFlags & Impl::IS_ATLASING_APPLIED ? TextureAtlas::ENABLED : TextureAtlas::DISABLED,
1008       mWrapModeU <= WrapMode::CLAMP_TO_EDGE && mWrapModeV <= WrapMode::CLAMP_TO_EDGE ? DefaultTextureWrapMode::APPLY : DefaultTextureWrapMode::DO_NOT_APPLY,
1009       IsRoundedCornerRequired() ? RoundedCorner::ENABLED : RoundedCorner::DISABLED,
1010       IsBorderlineRequired() ? Borderline::ENABLED : Borderline::DISABLED
1011     );
1012   }
1013   else if(mImpl->mCustomShader)
1014   {
1015     shader = Shader::New(vertexShaderView, fragmentShaderView, mImpl->mCustomShader->mHints);
1016   }
1017   else
1018   {
1019     shader = Shader::New(vertexShaderView, fragmentShaderView);
1020   }
1021
1022   if(usesWholeTexture)
1023   {
1024     shader.RegisterProperty(PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT);
1025   }
1026
1027   // Set pixel align off as default.
1028   // ToDo: Pixel align causes issues such as rattling image animation.
1029   // We should trun it off until issues are resolved
1030   shader.RegisterProperty(PIXEL_ALIGNED_UNIFORM_NAME, PIXEL_ALIGN_OFF);
1031
1032   return shader;
1033 }
1034
1035 } // namespace Internal
1036
1037 } // namespace Toolkit
1038
1039 } // namespace Dali