1 #ifndef DALI_TOOLKIT_INTERNAL_IMAGE_VISUAL_H
2 #define DALI_TOOLKIT_INTERNAL_IMAGE_VISUAL_H
5 * Copyright (c) 2016 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/common/intrusive-ptr.h>
23 #include <dali/public-api/images/image.h>
24 #include <dali/public-api/images/image-operations.h>
25 #include <dali/public-api/images/resource-image.h>
26 #include <dali/devel-api/object/weak-handle.h>
29 #include <dali-toolkit/internal/visuals/visual-base-impl.h>
30 #include <dali-toolkit/devel-api/image-loader/atlas-upload-observer.h>
44 typedef IntrusivePtr< ImageVisual > ImageVisualPtr;
47 * The visual which renders an image to the control's quad
49 * The following properties are optional
51 * | %Property Name | Type |
52 * |--------------------|------------------|
54 * | fittingMode | STRING |
55 * | samplingMode | STRING |
56 * | desiredWidth | INT |
57 * | desiredHeight | INT |
58 * | synchronousLoading | BOOLEAN |
60 * where imageFittingMode should be one of the following fitting modes:
67 * where imageSamplingMode should be one of the following sampling modes:
78 class ImageVisual: public Visual::Base, public ConnectionTracker, public AtlasUploadObserver
83 * @brief Create a new image visual.
85 * @param[in] factoryCache A pointer pointing to the VisualFactoryCache object
86 * @return A smart-pointer to the newly allocated visual.
88 static ImageVisualPtr New( VisualFactoryCache& factoryCache );
91 * @brief Create a new image visual with a URL.
93 * The visual will load the Image asynchronously when the associated actor is put on stage, and destroy the image when it is off stage
95 * @param[in] factoryCache The VisualFactoryCache object
96 * @param[in] imageUrl The URL of the image resource to use
97 * @param[in] size The width and height to fit the loaded image to.
98 * @param[in] fittingMode The FittingMode of the resource to load
99 * @param[in] samplingMode The SamplingMode of the resource to load
101 static ImageVisualPtr New( VisualFactoryCache& factoryCache,
102 const std::string& imageUrl,
103 ImageDimensions size = ImageDimensions(),
104 FittingMode::Type fittingMode = FittingMode::DEFAULT,
105 Dali::SamplingMode::Type samplingMode = SamplingMode::BOX_THEN_LINEAR );
108 * @brief Create a new image visual with an Image type.
110 * @param[in] factoryCache The VisualFactoryCache object
111 * @param[in] image The image to use
113 static ImageVisualPtr New( VisualFactoryCache& factoryCache, const Image& image );
115 public: // from Visual
118 * @copydoc Visual::Base::GetNaturalSize
120 virtual void GetNaturalSize( Vector2& naturalSize ) const;
123 * @copydoc Visual::Base::CreatePropertyMap
125 virtual void DoCreatePropertyMap( Property::Map& map ) const;
128 * @copydoc Visual::Base::DoSetProperty
130 virtual void DoSetProperty( Dali::Property::Index index, const Dali::Property::Value& propertyValue );
133 * @copydoc Visual::Base::DoGetProperty
135 virtual Dali::Property::Value DoGetProperty( Dali::Property::Index index );
140 * @brief Constructor.
142 * @param[in] factoryCache The VisualFactoryCache object
144 ImageVisual( VisualFactoryCache& factoryCache );
147 * @brief Constructor with a URL.
149 * The visual will load the Image asynchronously when the associated actor is put on stage, and destroy the image when it is off stage
151 * @param[in] factoryCache The VisualFactoryCache object
152 * @param[in] imageUrl The URL of the image resource to use
153 * @param[in] size The width and height to fit the loaded image to.
154 * @param[in] fittingMode The FittingMode of the resource to load
155 * @param[in] samplingMode The SamplingMode of the resource to load
157 ImageVisual( VisualFactoryCache& factoryCache,
158 const std::string& imageUrl,
159 ImageDimensions size,
160 FittingMode::Type fittingMode,
161 Dali::SamplingMode::Type samplingMode );
164 * @brief Constructor with an Image type.
166 * @param[in] factoryCache The VisualFactoryCache object
167 * @param[in] image The image to use
169 ImageVisual( VisualFactoryCache& factoryCache, const Image& image );
172 * @brief A reference counted object may only be deleted by calling Unreference().
174 virtual ~ImageVisual();
177 * @copydoc Visual::Base::DoSetProperties
179 virtual void DoSetProperties( const Property::Map& propertyMap );
182 * @copydoc Visual::Base::DoSetOnStage
184 virtual void DoSetOnStage( Actor& actor );
187 * @copydoc Visual::Base::DoSetOffStage
189 virtual void DoSetOffStage( Actor& actor );
192 * @copydoc Visual::Base::OnSetTransform
194 virtual void OnSetTransform();
199 * Get the standard image rendering shader.
200 * @param[in] factoryCache A pointer pointing to the VisualFactoryCache object
201 * @param[in] atlasing Whether texture atlasing is applied.
202 * @param[in] defaultTextureWrapping Whether the default texture wrap mode is applied.
204 static Shader GetImageShader( VisualFactoryCache& factoryCache, bool atlasing, bool defaultTextureWrapping );
207 * @copydoc AtlasUploadObserver::UploadCompleted
209 * To avoid rendering garbage pixels, renderer should be added to actor after the resources are ready.
210 * This callback is the place to add the renderer as it would be called once the loading is finished.
212 virtual void UploadCompleted();
217 * @brief Applies the image to the texture set used for this renderer
219 * @param[in] image The Image to apply to the texture set used for this renderer
221 void ApplyImageToSampler( const Image& image );
224 * @brief Initializes the Dali::Renderer from an image url string
226 * @param[in] imageUrl The image url string to intialize this ImageVisual from
228 void InitializeRenderer( const std::string& imageUrl );
231 * @brief Initializes the Dali::Renderer from an image handle
233 * @param[in] image The image handle to intialize this ImageVisual from
235 void InitializeRenderer( const Image& image );
238 * @brief Creates the Dali::Renderer (potentially from the renderer cache), initializing it
239 * @param[in] textures to use
241 void CreateRenderer( TextureSet& textures );
244 * @brief Creates the Dali::Renderer for NativeImage with custom sampler type and prefix, initializing it
245 * @param NativeImageRenderer
247 void CreateNativeImageRenderer( NativeImage& nativeImage );
250 * @brief Query whether resources requires to be loaded synchronously.
251 * @return Returns true if synchronous resource loading is required, false otherwise.
253 bool IsSynchronousResourceLoading() const;
256 * @brief Load the resource synchronously
258 void LoadResourceSynchronously();
261 * Creates the texture set and adds the texture to it
262 * @param[out] textureRect The texture area of the texture in the atlas.
263 * @param[in] url The URL of the image resource to use.
264 * @param[in] synchronousLoading If true, the resource is loaded synchronously, otherwise asynchronously.
265 * @param[in] attemptAtlasing If true will attempt atlasing, otherwise create unique texture
266 * @return the texture set to use
268 TextureSet CreateTextureSet( Vector4& textureRect, const std::string& url, bool synchronousLoading, bool attemptAtlasing );
271 * Callback function of image resource loading succeed
272 * @param[in] image The Image content that we attempted to load from mImageUrl
274 void OnImageLoaded( ResourceImage image );
277 * Set the value to the uTextureRect uniform
278 * @param[in] textureRect The texture rectangular area.
280 void SetTextureRectUniform( const Vector4& textureRect );
283 * Clean the renderer from cache, and remove the image from atlas if it is not used anymore
285 void CleanCache(const std::string& url);
292 WeakHandle<Actor> mPlacementActor;
293 std::string mImageUrl;
295 Dali::ImageDimensions mDesiredSize;
296 Dali::FittingMode::Type mFittingMode:3;
297 Dali::SamplingMode::Type mSamplingMode:4;
298 Dali::WrapMode::Type mWrapModeU:3;
299 Dali::WrapMode::Type mWrapModeV:3;
303 } // namespace Internal
305 } // namespace Toolkit
309 #endif /* DALI_TOOLKIT_INTERNAL_IMAGE_VISUAL_H */