2 * Copyright (c) 2023 Samsung Electronics Co., Ltd.
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 #include "image-view-impl.h"
22 #include <dali/devel-api/scripting/scripting.h>
23 #include <dali/public-api/math/math-utils.h>
24 #include <dali/public-api/object/type-registry-helper.h>
25 #include <dali/public-api/object/type-registry.h>
28 #include <dali-toolkit/devel-api/controls/control-devel.h>
29 #include <dali-toolkit/devel-api/visual-factory/visual-factory.h>
30 #include <dali-toolkit/devel-api/visuals/visual-actions-devel.h>
31 #include <dali-toolkit/internal/controls/control/control-data-impl.h>
32 #include <dali-toolkit/internal/visuals/visual-base-data-impl.h>
33 #include <dali-toolkit/internal/visuals/visual-base-impl.h>
34 #include <dali-toolkit/internal/visuals/visual-string-constants.h>
35 #include <dali-toolkit/public-api/controls/image-view/image-view.h>
36 #include <dali-toolkit/public-api/visuals/visual-properties.h>
46 const Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f);
48 constexpr float FULL_OPACITY = 1.0f;
49 constexpr float LOW_OPACITY = 0.2f;
53 return Toolkit::ImageView::New();
56 // Setup properties, signals and actions using the type-registry.
57 DALI_TYPE_REGISTRATION_BEGIN(Toolkit::ImageView, Toolkit::Control, Create);
58 DALI_PROPERTY_REGISTRATION(Toolkit, ImageView, "image", MAP, IMAGE)
59 DALI_PROPERTY_REGISTRATION(Toolkit, ImageView, "preMultipliedAlpha", BOOLEAN, PRE_MULTIPLIED_ALPHA)
60 DALI_PROPERTY_REGISTRATION(Toolkit, ImageView, "placeholderImage", STRING, PLACEHOLDER_IMAGE)
61 DALI_PROPERTY_REGISTRATION(Toolkit, ImageView, "enableTransitionEffect", BOOLEAN, ENABLE_TRANSITION_EFFECT)
62 DALI_ANIMATABLE_PROPERTY_REGISTRATION_WITH_DEFAULT(Toolkit, ImageView, "pixelArea", Vector4(0.f, 0.f, 1.f, 1.f), PIXEL_AREA)
63 DALI_TYPE_REGISTRATION_END()
65 } // anonymous namespace
69 ImageView::ImageView(ControlBehaviour additionalBehaviour)
70 : Control(ControlBehaviour(CONTROL_BEHAVIOUR_DEFAULT | additionalBehaviour)),
72 mTransitionTargetAlpha(FULL_OPACITY),
73 mImageVisualPaddingSetByTransform(false),
74 mImageViewPixelAreaSetByFittingMode(false),
75 mTransitionEffect(false)
79 ImageView::~ImageView()
83 Toolkit::ImageView ImageView::New(ControlBehaviour additionalBehaviour)
85 ImageView* impl = new ImageView(additionalBehaviour);
87 Toolkit::ImageView handle = Toolkit::ImageView(*impl);
89 // Second-phase init of the implementation
90 // This can only be done after the CustomActor connection has been made...
96 /////////////////////////////////////////////////////////////
98 void ImageView::OnInitialize()
100 // ImageView can relayout in the OnImageReady, alternative to a signal would be to have a upcall from the Control to ImageView
101 Dali::Toolkit::Control handle(GetOwner());
102 handle.ResourceReadySignal().Connect(this, &ImageView::OnResourceReady);
104 Self().SetProperty(DevelControl::Property::ACCESSIBILITY_ROLE, Dali::Accessibility::Role::IMAGE);
107 void ImageView::SetImage(const Property::Map& map)
109 if(mTransitionEffect && mVisual)
111 // Clear previous transition effect if it is playing
114 if(mTransitionAnimation)
116 if(mTransitionAnimation.GetState() == Animation::PLAYING)
118 mTransitionAnimation.Stop();
119 ClearTransitionAnimation();
124 // Enable transition effect for previous visual.
125 // This previous visual will be deleted when transition effect is done.
126 Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
127 controlDataImpl.EnableReadyTransitionOverriden(mVisual, true);
128 mPreviousVisual = mVisual;
131 // Comparing a property map is too expensive so just creating a new visual
135 // keep alpha for transition effect
136 if(mTransitionEffect)
138 float alpha = FULL_OPACITY;
139 Property::Value* alphaValue = map.Find(Toolkit::Visual::Property::OPACITY);
140 if(alphaValue && alphaValue->Get(alpha))
142 mTransitionTargetAlpha = alpha;
148 ShowPlaceholderImage();
151 Toolkit::Visual::Base visual = Toolkit::VisualFactory::Get().CreateVisual(mPropertyMap);
154 // Don't set mVisual until it is ready and shown. Getters will still use current visual.
160 if(!mShaderMap.Empty())
162 Internal::Visual::Base& visualImpl = Toolkit::GetImplementation(visual);
163 visualImpl.SetCustomShader(mShaderMap);
166 DevelControl::RegisterVisual(*this, Toolkit::ImageView::Property::IMAGE, visual);
170 // Unregister the exsiting visual
171 DevelControl::UnregisterVisual(*this, Toolkit::ImageView::Property::IMAGE);
173 // Trigger a size negotiation request that may be needed when unregistering a visual.
177 // Signal that a Relayout may be needed
180 void ImageView::SetImage(const std::string& url, ImageDimensions size)
182 if(mTransitionEffect && mVisual)
184 // Clear previous transition effect if it is playing
187 if(mTransitionAnimation)
189 if(mTransitionAnimation.GetState() == Animation::PLAYING)
191 mTransitionAnimation.Stop();
192 ClearTransitionAnimation();
197 // Enable transition effect for previous visual.
198 // This previous visual will be deleted when transition effect is done.
199 Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
200 controlDataImpl.EnableReadyTransitionOverriden(mVisual, true);
201 mPreviousVisual = mVisual;
204 // Don't bother comparing if we had a visual previously, just drop old visual and create new one
207 mPropertyMap.Clear();
211 ShowPlaceholderImage();
214 // Don't set mVisual until it is ready and shown. Getters will still use current visual.
215 Toolkit::Visual::Base visual = Toolkit::VisualFactory::Get().CreateVisual(url, size);
223 if(!mShaderMap.Empty())
225 Internal::Visual::Base& visualImpl = Toolkit::GetImplementation(visual);
226 visualImpl.SetCustomShader(mShaderMap);
229 DevelControl::RegisterVisual(*this, Toolkit::ImageView::Property::IMAGE, visual);
233 // Unregister the exsiting visual
234 DevelControl::UnregisterVisual(*this, Toolkit::ImageView::Property::IMAGE);
236 // Trigger a size negotiation request that may be needed when unregistering a visual.
240 // Signal that a Relayout may be needed
243 void ImageView::ClearImageVisual()
245 // Clear cached properties
246 mPropertyMap.Clear();
250 // Unregister the exsiting visual
251 DevelControl::UnregisterVisual(*this, Toolkit::ImageView::Property::IMAGE);
253 // Trigger a size negotiation request that may be needed when unregistering a visual.
257 void ImageView::EnablePreMultipliedAlpha(bool preMultipled)
261 Toolkit::GetImplementation(mVisual).EnablePreMultipliedAlpha(preMultipled);
265 bool ImageView::IsPreMultipliedAlphaEnabled() const
269 return Toolkit::GetImplementation(mVisual).IsPreMultipliedAlphaEnabled();
274 void ImageView::SetDepthIndex(int depthIndex)
278 mVisual.SetDepthIndex(depthIndex);
282 void ImageView::SetPlaceholderUrl(const std::string& url)
284 mPlaceholderUrl = url;
287 mPlaceholderVisual.Reset();
288 CreatePlaceholderImage();
292 // Clear current placeholder image
293 Toolkit::Visual::Base visual = DevelControl::GetVisual(*this, Toolkit::ImageView::Property::PLACEHOLDER_IMAGE);
296 DevelControl::UnregisterVisual(*this, Toolkit::ImageView::Property::PLACEHOLDER_IMAGE);
299 mPlaceholderVisual.Reset();
300 mPlaceholderUrl = url;
304 std::string ImageView::GetPlaceholderUrl() const
306 return mPlaceholderUrl;
309 void ImageView::EnableTransitionEffect(bool effectEnable)
311 mTransitionEffect = effectEnable;
314 bool ImageView::IsTransitionEffectEnabled() const
316 return mTransitionEffect;
319 Vector3 ImageView::GetNaturalSize()
323 Vector2 rendererNaturalSize;
324 mVisual.GetNaturalSize(rendererNaturalSize);
327 padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
329 rendererNaturalSize.width += (padding.start + padding.end);
330 rendererNaturalSize.height += (padding.top + padding.bottom);
331 return Vector3(rendererNaturalSize);
334 // if no visual then use Control's natural size
335 return Control::GetNaturalSize();
338 float ImageView::GetHeightForWidth(float width)
341 padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
345 return mVisual.GetHeightForWidth(width) + padding.top + padding.bottom;
349 return Control::GetHeightForWidth(width) + padding.top + padding.bottom;
353 float ImageView::GetWidthForHeight(float height)
356 padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
360 return mVisual.GetWidthForHeight(height) + padding.start + padding.end;
364 return Control::GetWidthForHeight(height) + padding.start + padding.end;
368 void ImageView::OnRelayout(const Vector2& size, RelayoutContainer& container)
370 Control::OnRelayout(size, container);
373 Property::Map transformMap = Property::Map();
375 Extents padding = Self().GetProperty<Extents>(Toolkit::Control::Property::PADDING);
377 bool zeroPadding = (padding == Extents());
379 Dali::LayoutDirection::Type layoutDirection = static_cast<Dali::LayoutDirection::Type>(
380 Self().GetProperty(Dali::Actor::Property::LAYOUT_DIRECTION).Get<int>());
381 if(Dali::LayoutDirection::RIGHT_TO_LEFT == layoutDirection)
383 std::swap(padding.start, padding.end);
386 // remove padding from the size to know how much is left for the visual
387 Vector2 finalSize = size - Vector2(padding.start + padding.end, padding.top + padding.bottom);
388 Vector2 finalOffset = Vector2(padding.start, padding.top);
390 ApplyFittingMode(finalSize, finalOffset, zeroPadding, transformMap);
392 mVisual.SetTransformAndSize(transformMap, size);
394 // mVisual is not updated util the resource is ready in the case of visual replacement.
395 // in this case, the Property Map must be initialized so that the previous value is not reused.
396 // after mVisual is updated, the correct value will be reset.
397 Toolkit::Visual::Base visual = DevelControl::GetVisual(*this, Toolkit::ImageView::Property::IMAGE);
398 if(visual && visual != mVisual)
400 visual.SetTransformAndSize(Property::Map(), size);
405 void ImageView::OnCreateTransitions(std::vector<std::pair<Dali::Property::Index, Dali::Property::Map>>& sourceProperties,
406 std::vector<std::pair<Dali::Property::Index, Dali::Property::Map>>& destinationProperties,
407 Dali::Toolkit::Control source,
408 Dali::Toolkit::Control destination)
410 // Retrieves image properties to be transitioned.
411 Dali::Property::Map imageSourcePropertyMap, imageDestinationPropertyMap;
412 MakeVisualTransition(imageSourcePropertyMap, imageDestinationPropertyMap, source, destination, Toolkit::ImageView::Property::IMAGE);
413 if(imageSourcePropertyMap.Count() > 0)
415 sourceProperties.push_back(std::pair<Dali::Property::Index, Dali::Property::Map>(Toolkit::ImageView::Property::IMAGE, imageSourcePropertyMap));
416 destinationProperties.push_back(std::pair<Dali::Property::Index, Dali::Property::Map>(Toolkit::ImageView::Property::IMAGE, imageDestinationPropertyMap));
420 void ImageView::OnUpdateVisualProperties(const std::vector<std::pair<Dali::Property::Index, Dali::Property::Map>>& properties)
422 Toolkit::Visual::Base visual = DevelControl::GetVisual(*this, Toolkit::ImageView::Property::IMAGE);
425 Dali::Toolkit::Control handle(GetOwner());
427 for(auto&& data : properties)
429 if(data.first == Toolkit::ImageView::Property::IMAGE)
431 DevelControl::DoAction(handle, Toolkit::ImageView::Property::IMAGE, DevelVisual::Action::UPDATE_PROPERTY, data.second);
438 void ImageView::OnResourceReady(Toolkit::Control control)
440 // In case of placeholder, we need to skip this call.
441 // TODO: In case of placeholder, it needs to be modified not to call OnResourceReady()
442 if(control.GetVisualResourceStatus(Toolkit::ImageView::Property::IMAGE) != Toolkit::Visual::ResourceStatus::READY)
447 // Do transition effect if need.
448 if(mTransitionEffect)
450 // TODO: Consider about placeholder image is loaded failed
451 Toolkit::Visual::Base placeholderVisual = DevelControl::GetVisual(*this, Toolkit::ImageView::Property::PLACEHOLDER_IMAGE);
452 if(!placeholderVisual || control.GetVisualResourceStatus(Toolkit::ImageView::Property::PLACEHOLDER_IMAGE) == Toolkit::Visual::ResourceStatus::READY)
454 // when placeholder is disabled or ready placeholder and image, we need to transition effect
455 TransitionImageWithEffect();
459 ClearTransitionAnimation();
464 // we don't need placeholder anymore because visual is replaced. so hide placeholder.
465 HidePlaceholderImage();
468 // Visual ready so update visual attached to this ImageView, following call to RelayoutRequest will use this visual.
469 mVisual = DevelControl::GetVisual(*this, Toolkit::ImageView::Property::IMAGE);
470 // Signal that a Relayout may be needed
473 void ImageView::SetTransformMapForFittingMode(Vector2 finalSize, Vector2 naturalSize, Vector2 finalOffset, Visual::FittingMode fittingMode, Property::Map& transformMap)
477 case Visual::FittingMode::FIT_KEEP_ASPECT_RATIO:
479 auto availableVisualSize = finalSize;
481 // scale to fit the padded area
482 finalSize = naturalSize * std::min((!Dali::EqualsZero(naturalSize.width) ? (availableVisualSize.width / naturalSize.width) : 0),
483 (!Dali::EqualsZero(naturalSize.height) ? (availableVisualSize.height / naturalSize.height) : 0));
485 // calculate final offset within the padded area
486 finalOffset += (availableVisualSize - finalSize) * .5f;
488 // populate the transform map
489 transformMap.Add(Toolkit::Visual::Transform::Property::OFFSET, finalOffset)
490 .Add(Toolkit::Visual::Transform::Property::SIZE, finalSize);
493 case Visual::FittingMode::OVER_FIT_KEEP_ASPECT_RATIO:
495 mImageViewPixelAreaSetByFittingMode = true;
496 auto availableVisualSize = finalSize;
497 finalSize = naturalSize * std::max((!Dali::EqualsZero(naturalSize.width) ? (availableVisualSize.width / naturalSize.width) : 0.0f),
498 (!Dali::EqualsZero(naturalSize.height) ? (availableVisualSize.height / naturalSize.height) : 0.0f));
500 auto originalOffset = finalOffset;
501 finalOffset += (availableVisualSize - finalSize) * .5f;
503 float x = abs((availableVisualSize.width - finalSize.width) / finalSize.width) * .5f;
504 float y = abs((availableVisualSize.height - finalSize.height) / finalSize.height) * .5f;
505 float widthRatio = 1.f - abs((availableVisualSize.width - finalSize.width) / finalSize.width);
506 float heightRatio = 1.f - abs((availableVisualSize.height - finalSize.height) / finalSize.height);
507 Vector4 pixelArea = Vector4(x, y, widthRatio, heightRatio);
508 Self().SetProperty(Toolkit::ImageView::Property::PIXEL_AREA, pixelArea);
510 // populate the transform map
511 transformMap.Add(Toolkit::Visual::Transform::Property::OFFSET, originalOffset)
512 .Add(Toolkit::Visual::Transform::Property::SIZE, availableVisualSize);
515 case Visual::FittingMode::CENTER:
517 auto availableVisualSize = finalSize;
518 if(availableVisualSize.width > naturalSize.width && availableVisualSize.height > naturalSize.height)
520 finalSize = naturalSize;
524 finalSize = naturalSize * std::min((!Dali::EqualsZero(naturalSize.width) ? (availableVisualSize.width / naturalSize.width) : 0.0f),
525 (!Dali::EqualsZero(naturalSize.height) ? (availableVisualSize.height / naturalSize.height) : 0.0f));
528 finalOffset += (availableVisualSize - finalSize) * .5f;
530 // populate the transform map
531 transformMap.Add(Toolkit::Visual::Transform::Property::OFFSET, finalOffset)
532 .Add(Toolkit::Visual::Transform::Property::SIZE, finalSize);
535 case Visual::FittingMode::FILL:
537 transformMap.Add(Toolkit::Visual::Transform::Property::OFFSET, finalOffset)
538 .Add(Toolkit::Visual::Transform::Property::SIZE, finalSize);
541 case Visual::FittingMode::FIT_WIDTH:
542 case Visual::FittingMode::FIT_HEIGHT:
544 // This FittingMode already converted
550 void ImageView::ApplyFittingMode(Vector2 finalSize, Vector2 finalOffset, bool zeroPadding, Property::Map& transformMap)
552 Visual::FittingMode fittingMode = Toolkit::GetImplementation(mVisual).GetFittingMode();
554 // Reset PIXEL_AREA after using OVER_FIT_KEEP_ASPECT_RATIO
555 if(mImageViewPixelAreaSetByFittingMode)
557 Self().SetProperty(Toolkit::ImageView::Property::PIXEL_AREA, FULL_TEXTURE_RECT);
558 mImageViewPixelAreaSetByFittingMode = false;
561 if((!zeroPadding) || // If padding is not zero
562 (fittingMode != Visual::FittingMode::FILL))
564 mImageVisualPaddingSetByTransform = true;
567 // NaturalSize will not be used for FILL fitting mode, which is default.
568 // Skip GetNaturalSize
569 if(fittingMode != Visual::FittingMode::FILL)
571 mVisual.GetNaturalSize(naturalSize);
574 // If FittingMode use FIT_WIDTH or FIT_HEIGTH, it need to change proper fittingMode
575 if(fittingMode == Visual::FittingMode::FIT_WIDTH)
577 fittingMode = (finalSize.height / naturalSize.height) < (finalSize.width / naturalSize.width) ? Visual::FittingMode::OVER_FIT_KEEP_ASPECT_RATIO : Visual::FittingMode::FIT_KEEP_ASPECT_RATIO;
579 else if(fittingMode == Visual::FittingMode::FIT_HEIGHT)
581 fittingMode = (finalSize.height / naturalSize.height) < (finalSize.width / naturalSize.width) ? Visual::FittingMode::FIT_KEEP_ASPECT_RATIO : Visual::FittingMode::OVER_FIT_KEEP_ASPECT_RATIO;
584 SetTransformMapForFittingMode(finalSize, naturalSize, finalOffset, fittingMode, transformMap);
586 // Set extra value for applying transformMap
587 transformMap.Add(Toolkit::Visual::Transform::Property::OFFSET_POLICY,
588 Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE))
589 .Add(Toolkit::Visual::Transform::Property::ORIGIN, Toolkit::Align::TOP_BEGIN)
590 .Add(Toolkit::Visual::Transform::Property::ANCHOR_POINT, Toolkit::Align::TOP_BEGIN)
591 .Add(Toolkit::Visual::Transform::Property::SIZE_POLICY,
592 Vector2(Toolkit::Visual::Transform::Policy::ABSOLUTE, Toolkit::Visual::Transform::Policy::ABSOLUTE));
594 else if(mImageVisualPaddingSetByTransform && zeroPadding) // Reset offset to zero only if padding applied previously
596 mImageVisualPaddingSetByTransform = false;
597 // Reset the transform map
598 transformMap.Add(Toolkit::Visual::Transform::Property::OFFSET, Vector2::ZERO)
599 .Add(Toolkit::Visual::Transform::Property::OFFSET_POLICY,
600 Vector2(Toolkit::Visual::Transform::Policy::RELATIVE, Toolkit::Visual::Transform::Policy::RELATIVE))
601 .Add(Toolkit::Visual::Transform::Property::SIZE, Vector2::ONE)
602 .Add(Toolkit::Visual::Transform::Property::SIZE_POLICY,
603 Vector2(Toolkit::Visual::Transform::Policy::RELATIVE, Toolkit::Visual::Transform::Policy::RELATIVE));
607 void ImageView::CreatePlaceholderImage()
609 Property::Map propertyMap;
610 propertyMap.Insert(Toolkit::Visual::Property::TYPE, Toolkit::Visual::IMAGE);
611 propertyMap.Insert(Toolkit::ImageVisual::Property::URL, mPlaceholderUrl);
612 //propertyMap.Insert(Toolkit::ImageVisual::Property::LOAD_POLICY, Toolkit::ImageVisual::LoadPolicy::IMMEDIATE); // TODO: need to enable this property
613 propertyMap.Insert(Toolkit::ImageVisual::Property::RELEASE_POLICY, Toolkit::ImageVisual::ReleasePolicy::DESTROYED);
614 mPlaceholderVisual = Toolkit::VisualFactory::Get().CreateVisual(propertyMap);
615 if(mPlaceholderVisual)
617 mPlaceholderVisual.SetName("placeholder");
621 DevelControl::UnregisterVisual(*this, Toolkit::ImageView::Property::PLACEHOLDER_IMAGE);
622 mPlaceholderVisual.Reset();
626 void ImageView::ShowPlaceholderImage()
628 if(mPlaceholderVisual)
630 DevelControl::RegisterVisual(*this, Toolkit::ImageView::Property::PLACEHOLDER_IMAGE, mPlaceholderVisual, false);
632 Toolkit::GetImplementation(mPlaceholderVisual).SetOnScene(self);
636 void ImageView::HidePlaceholderImage()
638 if(mPlaceholderVisual)
640 DevelControl::UnregisterVisual(*this, Toolkit::ImageView::Property::PLACEHOLDER_IMAGE);
644 Toolkit::GetImplementation(mPlaceholderVisual).SetOffScene(self);
648 void ImageView::TransitionImageWithEffect()
650 Toolkit::ImageView handle = Toolkit::ImageView(GetOwner());
654 mTransitionAnimation = Animation::New(1.5f);
655 mTransitionAnimation.SetEndAction(Animation::EndAction::DISCARD);
656 float destinationAlpha = (mTransitionTargetAlpha > LOW_OPACITY) ? mTransitionTargetAlpha : LOW_OPACITY;
658 if(mPreviousVisual) // Transition previous image
660 Dali::KeyFrames fadeoutKeyFrames = Dali::KeyFrames::New();
661 fadeoutKeyFrames.Add(0.0f, destinationAlpha);
662 fadeoutKeyFrames.Add(1.0f, LOW_OPACITY);
663 Internal::Visual::Base& visualImpl = Toolkit::GetImplementation(mPreviousVisual);
664 mTransitionAnimation.AnimateBetween(visualImpl.GetPropertyObject(Toolkit::Visual::Property::OPACITY), fadeoutKeyFrames);
666 else if(mPlaceholderVisual) // Transition placeholder
668 Dali::KeyFrames fadeoutKeyFrames = Dali::KeyFrames::New();
669 fadeoutKeyFrames.Add(0.0f, destinationAlpha);
670 fadeoutKeyFrames.Add(1.0f, LOW_OPACITY);
671 Internal::Visual::Base& visualImpl = Toolkit::GetImplementation(mPlaceholderVisual);
672 mTransitionAnimation.AnimateBetween(visualImpl.GetPropertyObject(Toolkit::Visual::Property::OPACITY), fadeoutKeyFrames);
675 // Transition current image
676 Toolkit::Visual::Base imageVisual = DevelControl::GetVisual(*this, Toolkit::ImageView::Property::IMAGE);
679 Dali::KeyFrames fadeinKeyFrames = Dali::KeyFrames::New();
680 fadeinKeyFrames.Add(0.0f, LOW_OPACITY);
681 fadeinKeyFrames.Add(1.0f, destinationAlpha);
682 mTransitionAnimation.AnimateBetween(DevelControl::GetVisualProperty(handle, Toolkit::ImageView::Property::IMAGE, Toolkit::Visual::Property::OPACITY), fadeinKeyFrames);
685 // Play transition animation
686 mTransitionAnimation.FinishedSignal().Connect(this, &ImageView::OnTransitionAnimationFinishedCallback);
687 mTransitionAnimation.Play();
691 void ImageView::ClearTransitionAnimation()
694 HidePlaceholderImage();
696 // Clear PreviousVisual
700 Internal::Control::Impl& controlDataImpl = Internal::Control::Impl::Get(*this);
701 controlDataImpl.EnableReadyTransitionOverriden(mVisual, false);
702 Toolkit::GetImplementation(mPreviousVisual).SetOffScene(self);
703 mPreviousVisual.Reset();
706 if(mTransitionAnimation)
708 mTransitionAnimation.FinishedSignal().Disconnect(this, &ImageView::OnTransitionAnimationFinishedCallback);
709 mTransitionAnimation.Clear();
713 ///////////////////////////////////////////////////////////
718 void ImageView::SetProperty(BaseObject* object, Property::Index index, const Property::Value& value)
720 Toolkit::ImageView imageView = Toolkit::ImageView::DownCast(Dali::BaseHandle(object));
724 ImageView& impl = GetImpl(imageView);
727 case Toolkit::ImageView::Property::IMAGE:
729 std::string imageUrl;
730 const Property::Map* map;
731 if(value.Get(imageUrl))
733 impl.SetImage(imageUrl, ImageDimensions());
735 // if its not a string then get a Property::Map from the property if possible.
738 map = value.GetMap();
741 // the property map is emtpy map. Unregister visual.
742 if(DALI_UNLIKELY(map->Count() == 0u))
744 impl.ClearImageVisual();
748 Property::Value* shaderValue = map->Find(Toolkit::Visual::Property::SHADER, CUSTOM_SHADER);
749 // set image only if property map contains image information other than custom shader
750 if(map->Count() > 1u || !shaderValue)
754 // the property map contains only the custom shader
755 else if((map->Count() == 1u) && (shaderValue))
757 Property::Map* shaderMap = shaderValue->GetMap();
760 impl.mShaderMap = *shaderMap;
762 if(!impl.mUrl.empty())
764 impl.SetImage(impl.mUrl, impl.mImageSize);
766 else if(!impl.mPropertyMap.Empty())
768 impl.SetImage(impl.mPropertyMap);
776 // invalid property value comes. Unregister visual.
777 impl.ClearImageVisual();
783 case Toolkit::ImageView::Property::PRE_MULTIPLIED_ALPHA:
788 impl.EnablePreMultipliedAlpha(isPre);
793 case Toolkit::ImageView::Property::PLACEHOLDER_IMAGE:
795 std::string placeholderUrl;
796 if(value.Get(placeholderUrl))
798 impl.SetPlaceholderUrl(placeholderUrl);
803 case Toolkit::ImageView::Property::ENABLE_TRANSITION_EFFECT:
805 bool transitionEffect;
806 if(value.Get(transitionEffect))
808 impl.EnableTransitionEffect(transitionEffect);
816 Property::Value ImageView::GetProperty(BaseObject* object, Property::Index propertyIndex)
818 Property::Value value;
820 Toolkit::ImageView imageview = Toolkit::ImageView::DownCast(Dali::BaseHandle(object));
824 ImageView& impl = GetImpl(imageview);
825 switch(propertyIndex)
827 case Toolkit::ImageView::Property::IMAGE:
829 if(!impl.mUrl.empty())
836 Toolkit::Visual::Base visual = DevelControl::GetVisual(impl, Toolkit::ImageView::Property::IMAGE);
839 visual.CreatePropertyMap(map);
846 case Toolkit::ImageView::Property::PRE_MULTIPLIED_ALPHA:
848 value = impl.IsPreMultipliedAlphaEnabled();
852 case Toolkit::ImageView::Property::PLACEHOLDER_IMAGE:
854 value = impl.GetPlaceholderUrl();
858 case Toolkit::ImageView::Property::ENABLE_TRANSITION_EFFECT:
860 value = impl.IsTransitionEffectEnabled();
869 void ImageView::OnTransitionAnimationFinishedCallback(Animation& animation)
871 ClearTransitionAnimation();
874 } // namespace Internal
875 } // namespace Toolkit