1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FOUNDATION_ACE_FRAMEWORKS_CORE_ANIMATION_TIME_EVENT_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_ANIMATION_TIME_EVENT_H 18 19 #include "base/memory/ace_type.h" 20 21 namespace OHOS::Ace { 22 23 class TimeEvent : public AceType { 24 DECLARE_ACE_TYPE(TimeEvent, AceType); 25 26 public: 27 // Called by Animator on each frame. 28 // timestamp: the time elapsed since the animation start, time unit is millisecond 29 // normalizedTime: use the time of the overall animation as a unit to normalize the current elapsed time 30 // only available when inherited by interpolate animation; for Motion, always 0.0 31 // reverse: the current animation direction. motion always go forward. 32 virtual void OnTimestampChanged(float timestamp, float normalizedTime, bool reverse) = 0; 33 }; 34 35 } // namespace OHOS::Ace 36 37 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_ANIMATION_TIME_EVENT_H 38