1 #ifndef __DALI_TOUCH_POINT_H__
2 #define __DALI_TOUCH_POINT_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 #include <dali/public-api/actors/actor.h>
23 #include <dali/public-api/math/vector2.h>
25 namespace Dali DALI_IMPORT_API
29 * @brief A TouchPoint represents a point on the screen that is currently being touched
30 * or where touch has stopped.
41 Down, /**< Screen touched */
42 Up, /**< Touch stopped */
43 Motion, /**< Finger dragged */
44 Leave, /**< Leave the boundary of an actor */
45 Stationary, /**< No change from last event. Useful when a multi-touch event occurs where
46 all points are sent but indicates that this particular point has not changed
47 since the last time */
48 Interrupted, /**< A system event has occurred which has interrupted the touch event sequence. */
49 Last /**< Number of states. */
52 // Construction & Destruction
57 * @param[in] id The touch device ID.
58 * @param[in] state The state.
59 * @param[in] screenX The X co-ordinate relative to the screen's origin.
60 * @param[in] screenY The Y co-ordinate relative to the screen's origin.
62 TouchPoint(int id, State state, float screenX, float screenY);
67 * @param[in] id The touch device ID.
68 * @param[in] state The state.
69 * @param[in] screenX The X co-ordinate relative to the screen's origin.
70 * @param[in] screenY The Y co-ordinate relative to the screen's origin.
71 * @param[in] localX The X co-ordinate relative to the top-left (0.0, 0.0, 0.5) of the actor.
72 * @param[in] localY The Y co-ordinate relative to the top-left (0.0, 0.0, 0.5) of the actor.
74 TouchPoint(int id, State state, float screenX, float screenY, float localX, float localY);
84 * @brief Each touch point has a unique device ID which specifies the touch device for that point.
89 * @brief State of the point.
96 * @brief The actor that was underneath the touch point.
101 * @brief The co-ordinates relative to the top-left of the hit-actor.
103 * @note The top-left of an actor is (0.0, 0.0, 0.5).
104 * @note If you require the local coordinates of another actor (e.g the parent of the hit actor),
105 * then you should use Actor::ScreenToLocal().
110 * @brief The co-ordinates relative to the top-left of the screen.
117 #endif // __DALI_TOUCH_POINT_H__