1 #ifndef __DALI_GESTURE_H__
2 #define __DALI_GESTURE_H__
5 * Copyright (c) 2014 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 * @addtogroup CAPI_DALI_EVENTS_MODULE
27 #include <dali/public-api/common/dali-common.h>
29 namespace Dali DALI_IMPORT_API
33 * @brief Base structure for different gestures that an application can receive.
35 * A gesture is an event that is produced from a combination of
36 * several touch events in a particular order or within a certain time
39 * To receive a particular gesture, the application has to create and connect to the appropriate
42 * @see GestureDetector
44 * @note An instance of this class cannot be created.
49 * @brief Copy constructor.
51 Gesture( const Gesture& rhs );
54 * @brief Assignment operator.
56 Gesture& operator=( const Gesture& rhs );
61 * @brief Virtual destructor.
66 * @brief Type of gesture.
70 Pinch = 1 << 0, ///< When two touch points move away or towards each other.
71 Pan = 1 << 1, ///< When the user drags their finger(s) in a particular direction.
72 Tap = 1 << 2, ///< When the user taps the screen.
73 LongPress = 1 << 3 ///< When the user continues to touch the same area on the screen for the device configured time.
77 * @brief State of the gesture.
81 Clear, ///< There is no state associated with this gesture.
82 Started, ///< The touched points on the screen have moved enough to be considered a gesture.
83 Continuing, ///< The gesture is continuing.
84 Finished, ///< The user has lifted a finger or touched an additional point on the screen.
85 Cancelled, ///< The gesture has been cancelled.
86 Possible ///< A gesture is possible.
92 * @brief The gesture type.
97 * @brief The gesture state.
99 * Please see the description in the sub-classes to see the states
100 * used by the actual gesture.
105 * @brief The time the gesture took place.
109 protected: // Creation
112 * @brief This constructor is only used by derived classes.
114 * @param[in] gestureType The type of gesture event.
115 * @param[in] gestureState The state of the gesture event.
117 Gesture(Type gestureType, State gestureState);
126 #endif // __DALI_GESTURE_H__