1 #ifndef DALI_INTERNAL_EVENT_PINCH_GESTURE_EVENT_H
2 #define DALI_INTERNAL_EVENT_PINCH_GESTURE_EVENT_H
5 * Copyright (c) 2021 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/internal/event/events/gesture-event.h>
23 #include <dali/public-api/math/vector2.h>
30 * If the adaptor detects a pinch gesture, then it should create an instance of this structure and
31 * send it to the Core.
33 * A Pinch Gesture event should be in one of four states:
34 * - STARTED: If a pinch is detected.
35 * - CONTINUING: If after a pinch is detected, it continues.
36 * - FINISHED: If after a pinch, the user lifts their finger(s).
37 * - CANCELLED: If there is a system interruption.
39 struct PinchGestureEvent : public GestureEvent
41 // Construction & Destruction
45 * @param[in] state The state of the gesture
47 PinchGestureEvent(GestureState state);
52 ~PinchGestureEvent() override;
57 * @copydoc Dali::PinchGesture::scale
62 * @copydoc Dali::PinchGesture::speed
67 * The center point between the two touch points of the last touch event in the series of touch motion
68 * event producing this gesture.
73 } // namespace Internal
77 #endif // DALI_INTERNAL_EVENT_PINCH_GESTURE_EVENT_H