1 #ifndef DALI_TOOLKIT_INTERNAL_GRADIENT_VISUAL_H
2 #define DALI_TOOLKIT_INTERNAL_GRADIENT_VISUAL_H
5 * Copyright (c) 2015 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-toolkit/internal/visuals/visual-base-impl.h>
23 #include <dali-toolkit/internal/visuals/gradient/gradient.h>
38 * The visual which renders smooth transition of colors to the control's quad.
39 * It supports two types of gradients: linear and radial.
41 * The following properties are essential for create a LINEAR GradientRender
43 * | %Property Name | Type |
44 * |-------------------------|------------------|
45 * | startPosition | VECTOR2 |
46 * | endPosition | VECTOR2 |
47 * | stopColor | ARRAY of VECTOR4 |
49 * The following properties are essential for create a RADIAL GradientRender
51 * | %Property Name | Type |
52 * |-------------------------|------------------|
53 * | center | VECTOR2 |
55 * | stopColor | ARRAY of VECTOR4 |
57 * The following properties are optional for both LINEAR and RADIAL GradientRender.
59 * | %Property Name | Type |
60 * |-------------------------|------------------|
61 * | stopOffset | ARRAY of FLOAT |
63 * | spreadMethod | STRING |
65 * Valid values for units are 'userSpace' and 'objectBoundingBox'.
66 * Valid values for spreadMethod are 'pad', 'repeat' and 'reflect.'
67 * If not provided, 'objectBoundingBox' is used as default gradient units, and 'pad' is used as default spread method.
69 class GradientVisual: public Visual::Base
74 * Types of the gradient
85 * @param[in] factoryCache A pointer pointing to the VisualFactoryCache object
87 GradientVisual( VisualFactoryCache& factoryCache );
90 * @brief A reference counted object may only be deleted by calling Unreference().
94 public: // from Visual
97 * @copydoc Visual::SetSize
99 virtual void SetSize( const Vector2& size );
102 * @copydoc Visual::CreatePropertyMap
104 virtual void DoCreatePropertyMap( Property::Map& map ) const;
108 * @copydoc Visual::DoInitialize
110 virtual void DoInitialize( Actor& actor, const Property::Map& propertyMap );
113 * @copydoc Visual::DoSetOnStage
115 virtual void DoSetOnStage( Actor& actor );
120 * @brief Initialize the renderer with the geometry and shader from the cache, if not available, create and save to the cache for sharing.
122 void InitializeRenderer();
125 * New a gradient object with the given property map.
127 * @return True if the property map provides valid properties to create a gradient. Otherwise, returns false.
129 bool NewGradient(Type gradientType, const Property::Map& propertyMap);
132 * Get the stop-offsets from the property.
133 * The valid property type are ARRAY, VECTOR2, VECTOR3, VECTOR4.
135 * @param[in] value The property value of stop-offsets
136 * @param[out] stopOffsets The vector contains the stop offset values.
138 static void GetStopOffsets(const Property::Value* value, Vector<float>& stopOffsets);
141 GradientVisual( const GradientVisual& gradientVisual );
144 GradientVisual& operator=( const GradientVisual& gradientVisual );
148 Matrix3 mGradientTransform;
149 IntrusivePtr<Gradient> mGradient;
153 } // namespace Internal
155 } // namespace Toolkit
159 #endif /* DALI_TOOLKIT_INTERNAL_GRADIENT_VISUAL_H */