1 #ifndef __DALI_GESTURE_H__
2 #define __DALI_GESTURE_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/common/dali-common.h>
27 * @addtogroup dali_core_events
32 * @brief Base structure for different gestures that an application can receive.
34 * A gesture is an event that is produced from a combination of
35 * several touch events in a particular order or within a certain time
38 * To receive a particular gesture, the application has to create and connect to the appropriate
42 * @note An instance of this class cannot be created.
43 * @see GestureDetector
46 struct DALI_IMPORT_API Gesture
49 * @brief Copy constructor.
51 * @param[in] rhs A reference to the copied handle
53 Gesture( const Gesture& rhs );
56 * @brief Assignment operator.
58 * @param[in] rhs A reference to the copied handle
59 * @return A reference to this
61 Gesture& operator=( const Gesture& rhs );
66 * @brief Virtual destructor.
72 * @brief Type of gesture.
77 Pinch = 1 << 0, ///< When two touch points move away or towards each other. @SINCE_1_0.0
78 Pan = 1 << 1, ///< When the user drags their finger(s) in a particular direction. @SINCE_1_0.0
79 Tap = 1 << 2, ///< When the user taps the screen. @SINCE_1_0.0
80 LongPress = 1 << 3 ///< When the user continues to touch the same area on the screen for the device configured time. @SINCE_1_0.0
84 * @brief State of the gesture.
89 Clear, ///< There is no state associated with this gesture. @SINCE_1_0.0
90 Started, ///< The touched points on the screen have moved enough to be considered a gesture. @SINCE_1_0.0
91 Continuing, ///< The gesture is continuing. @SINCE_1_0.0
92 Finished, ///< The user has lifted a finger or touched an additional point on the screen. @SINCE_1_0.0
93 Cancelled, ///< The gesture has been cancelled. @SINCE_1_0.0
94 Possible ///< A gesture is possible. @SINCE_1_0.0
100 * @brief The gesture type.
105 * @brief The gesture state.
107 * Please see the description in the sub-classes to see the states
108 * used by the actual gesture.
113 * @brief The time the gesture took place.
117 protected: // Creation
120 * @brief This constructor is only used by derived classes.
123 * @param[in] gestureType The type of gesture event.
124 * @param[in] gestureState The state of the gesture event.
126 Gesture(Type gestureType, State gestureState);
135 #endif // __DALI_GESTURE_H__