1 #ifndef DALI_TOOLKIT_INTERNAL_VISUAL_H
2 #define DALI_TOOLKIT_INTERNAL_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-operations.h>
24 #include <dali/public-api/object/base-object.h>
25 #include <dali/public-api/rendering/shader.h>
28 #include <dali-toolkit/devel-api/visual-factory/visual-factory.h>
29 #include <dali-toolkit/internal/visuals/visual-factory-cache.h>
30 #include <dali-toolkit/devel-api/visual-factory/visual-base.h>
45 * Base class for all Control rendering logic. A control may have multiple visuals.
47 * Note: The visual responds to the the Actor::COLOR by blending it with the 'Multiply' operator.
49 * The following properties are optional
51 * | %Property Name | Type |
52 * |-------------------------|------------------|
53 * | customShader | MAP |
55 * where custom-shader is a map with the following properties:
56 * | %Property Name | Type |
57 * |-------------------------|------------------|
58 * | vertexShader | STRING |
59 * | fragmentShader | STRING |
60 * | subdivideGridX | INT |
61 * | subdivideGridY | INT |
62 * | shaderHints | INT |
64 class Base : public BaseObject
69 * Setting the properties of the visual, this API should only called by the VisualFactory
70 * @param[in] propertyMap The properties for the requested Visual object.
72 void SetProperties( const Property::Map& propertyMap );
75 * @copydoc Toolkit::Visual::Base::SetName
77 void SetName( const std::string& name );
80 * @copydoc Toolkit::Visual::Base::GetName
82 const std::string& GetName();
85 * @copydoc Toolkit::Visual::Base::SetSize
87 virtual void SetSize( const Vector2& size );
90 * @copydoc Toolkit::Visual::Base::GetSize
92 const Vector2& GetSize() const;
95 * @copydoc Toolkit::Visual::Base::GetHeightForWidth
97 virtual float GetHeightForWidth( float width ) const;
100 * @copydoc Toolkit::Visual::Base::GetNaturalSize
102 virtual void GetNaturalSize( Vector2& naturalSize ) const;
105 * @copydoc Toolkit::Visual::Base::SetDepthIndex
107 void SetDepthIndex( float index );
110 * @copydoc Toolkit::Visual::Base::GetDepthIndex
112 float GetDepthIndex() const;
115 * @copydoc Toolkit::Visual::Base::SetOnStage
116 * @pre Impl->mGeometry must be created before this method is called
118 void SetOnStage( Actor& actor );
121 * @copydoc Toolkit::Visual::Base::SetOffStage
123 void SetOffStage( Actor& actor );
126 * @copydoc Toolkit::Visual::Base::CreatePropertyMap
128 void CreatePropertyMap( Property::Map& map ) const;
131 * @brief Set whether the Pre-multiplied Alpha Blending is required
133 * @param[in] preMultipled whether alpha is pre-multiplied.
135 void EnablePreMultipliedAlpha( bool preMultipled );
138 * @brief Query whether alpha is pre-multiplied.
140 * @return True is alpha is pre-multiplied, false otherwise.
142 bool IsPreMultipliedAlphaEnabled() const;
145 * @brief Sets properties of custom shader
146 * @param[in] propertyMap Property map containing the custom shader data
148 void SetCustomShader( const Property::Map& propertyMap );
151 * @copydoc Toolkit::Visual::Base::SetProperty
153 void SetProperty( Dali::Property::Index index, const Dali::Property::Value& propertyValue );
156 * @copydoc Toolkit::Visual::Base::GetProperty
158 Dali::Property::Value GetProperty( Dali::Property::Index index );
163 * @brief Constructor.
165 * @param[in] factoryCache A pointer pointing to the VisualFactoryCache object
167 Base( VisualFactoryCache& factoryCache );
170 * @brief A reference counted object may only be deleted by calling Unreference().
176 * @brief Called by CreatePropertyMap() allowing sub classes to respond to the CreatePropertyMap event
178 * @param[out] map The visual property map.
180 virtual void DoCreatePropertyMap( Property::Map& map ) const = 0;
183 * @brief Called by SetProperties() allowing sub classes to set their properties
185 * @param[in] propertyMap The properties for the requested Visual object.
187 virtual void DoSetProperties( const Property::Map& propertyMap ) = 0;
190 * @brief Called when transform property changes
192 virtual void OnSetTransform(){}
197 * @brief Called by SetOnStage() allowing sub classes to respond to the SetOnStage event
199 * @note The derived class is required to create the renderer, and add it to the actor when all the resources are in place.
201 * @param[in] actor The actor applying this visual.
203 virtual void DoSetOnStage( Actor& actor )=0;
206 * @brief Called by SetOffStage() allowing sub classes to respond to the SetOffStage event
208 * @param[in] actor The actor applying this visual.
210 virtual void DoSetOffStage( Actor& actor );
215 * @brief Gets the on stage state for this Visual
217 * @return Returns true if this Visual is on stage, false if it is off the stage
219 bool IsOnStage() const;
222 * @brief Gets whether the Dali::Renderer is from a shared cache (and therefore any modifications will affect other users of that renderer)
224 * @return Returns true if the renderer is from shared cache, false otherwise
226 bool IsFromCache() const;
230 * @brief Called by SetProperty(). To be overriden by derived clases in order to set properties.
232 * @param [in] index The index of the property.
233 * @param [in] propertyValue The new value of the property.
235 virtual void DoSetProperty( Dali::Property::Index index, const Dali::Property::Value& propertyValue ) = 0;
238 * @brief Called by GetProperty(). To be overriden by derived classes in order to retrieve properties.
240 * @param [in] index The index of the property.
242 * @return The property value.
244 virtual Dali::Property::Value DoGetProperty( Dali::Property::Index index ) = 0;
249 Base( const Visual::Base& visual );
252 Base& operator=( const Visual::Base& visual );
257 VisualFactoryCache& mFactoryCache;
260 typedef IntrusivePtr<Base> BasePtr;
264 } // namespace Internal
266 inline const Internal::Visual::Base& GetImplementation(const Toolkit::Visual::Base& visualBase )
268 DALI_ASSERT_ALWAYS( visualBase && "visual base handle is empty" );
270 const BaseObject& handle = visualBase.GetBaseObject();
272 return static_cast<const Internal::Visual::Base&>(handle);
275 inline Internal::Visual::Base& GetImplementation(Toolkit::Visual::Base& visualBase)
277 DALI_ASSERT_ALWAYS( visualBase && "visual base handle is empty" );
279 BaseObject& handle = visualBase.GetBaseObject();
281 return static_cast<Internal::Visual::Base&>(handle);
284 } // namespace Toolkit
288 #endif // DALI_TOOLKIT_INTERNAL_VISUAL_H