1 #ifndef __DALI_CONSTRAINT_SOURCE_H__
2 #define __DALI_CONSTRAINT_SOURCE_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/public-api/object/handle.h>
23 #include <dali/public-api/object/property.h>
28 * @addtogroup dali_core_animation
33 * @brief Enumeration for constraint source types.
35 * This specifies the location of a property, which is used as an input for a constraint function.
40 OBJECT_PROPERTY, ///< The property comes from an arbitrary object. @SINCE_1_0.0
41 LOCAL_PROPERTY, ///< The property comes from the object which the constraint is applied to. @SINCE_1_0.0
42 PARENT_PROPERTY ///< The property comes from the parent of the object, which the constraint is applied to. @SINCE_1_0.0
47 * @brief Identifies a property from an object.
50 struct DALI_IMPORT_API LocalSource
53 * @brief Creates a local constraint source.
56 * @param[in] index The index of a property provided by the constrained object
58 LocalSource( Property::Index index );
60 Property::Index propertyIndex; ///< The index of a property provided by the constrained object.
64 * @brief Identifies a property from the parent of an object.
67 struct DALI_IMPORT_API ParentSource
70 * @brief Creates a parent constraint source.
73 * @param[in] index The index of a property, provided by the parent of the constrained object
75 ParentSource( Property::Index index );
77 Property::Index propertyIndex; ///< The index of a property provided by the parent of the constrained object.
81 * @brief Identifies a property from any object.
84 struct DALI_IMPORT_API Source
87 * @brief Creates a constraint source.
90 * @param[in] object The object providing the property
91 * @param[in] index The index of a property provided by object
93 Source( Handle& object, Property::Index index );
95 Property::Index propertyIndex; ///< The index of a property provided by object.
97 Handle object; ///< The target object
101 * @brief The source of an input property for a constraint.
104 struct DALI_IMPORT_API ConstraintSource
107 * @brief Creates a constraint source.
110 * @param[in] source A constraint source from an arbitrary object
112 ConstraintSource( Source source );
115 * @brief Creates a constraint source.
118 * @param[in] local A local constraint source
120 ConstraintSource( LocalSource local );
123 * @brief Creates a constraint source.
126 * @param[in] parent A parent constraint source
128 ConstraintSource( ParentSource parent );
130 SourceType sourceType; ///< The source type
132 Property::Index propertyIndex; ///< The index of the source property
134 Handle object; ///< The target object; only valid if sourceType == OBJECT_PROPERTY
142 #endif // __DALI_CONSTRAINT_SOURCE_H__