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 Constraint source types.
35 * This specifies the location of a property, which is used as an input for a constraint function.
39 OBJECT_PROPERTY, ///< The property comes from an arbitrary object.
40 LOCAL_PROPERTY, ///< The property comes from the object which the constraint is applied to.
41 PARENT_PROPERTY ///< The property comes from the parent of the object, which the constraint is applied to.
46 * @brief Identifies a property from an object.
48 struct DALI_IMPORT_API LocalSource
51 * @brief Create a local constraint source.
53 * @param [in] index The index of a property provided by the constrained object.
55 LocalSource( Property::Index index );
57 Property::Index propertyIndex; ///< The index of a property provided by the constrained object.
61 * @brief Identifies a property from the parent of an object.
63 struct DALI_IMPORT_API ParentSource
66 * @brief Create a local constraint source.
68 * @param [in] index The index of a property, provided by the parent of the constrained object.
70 ParentSource( Property::Index index );
72 Property::Index propertyIndex; ///< The index of a property provided by the parent of the constrained object.
76 * @brief Identifies a property from any object.
78 struct DALI_IMPORT_API Source
81 * @brief Create a constraint source.
83 * @param [in] object The object providing the property.
84 * @param [in] index The index of a property provided by object.
86 Source( Handle& object, Property::Index index );
88 Property::Index propertyIndex; ///< The index of a property provided by object.
90 Handle object; ///< The target object
94 * @brief The source of an input property for a constraint.
96 struct DALI_IMPORT_API ConstraintSource
99 * @brief Create a constraint source.
101 * @param [in] source A constraint source from an arbitrary object.
103 ConstraintSource( Source source );
106 * @brief Create a constraint source.
108 * @param [in] local A local constraint source.
110 ConstraintSource( LocalSource local );
113 * @brief Create a constraint source.
115 * @param [in] parent A parent constraint source.
117 ConstraintSource( ParentSource parent );
119 SourceType sourceType; ///< The source type
121 Property::Index propertyIndex; ///< The index of the source property
123 Handle object; ///< The target object; only valid if sourceType == OBJECT_PROPERTY
131 #endif // __DALI_CONSTRAINT_SOURCE_H__