1 /* 2 * Copyright (c) 2022 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_COMPONENTS_NG_PATTERN_SCROLL_SCROLL_POSITION_CONTROLLER_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_SCROLL_SCROLL_POSITION_CONTROLLER_H 18 19 #include <functional> 20 21 #include "core/components_ng/pattern/scrollable/scrollable_controller.h" 22 23 namespace OHOS::Ace::NG { 24 25 class ACE_EXPORT ScrollPositionController : public ScrollableController { 26 DECLARE_ACE_TYPE(ScrollPositionController, ScrollableController); 27 28 public: 29 ScrollPositionController() = default; 30 ~ScrollPositionController() override = default; 31 32 void ScrollBy(double pixelX, double pixelY, bool smooth) override; 33 void ScrollToEdge(ScrollEdgeType scrollEdgeType, bool smooth) override; 34 void ScrollPage(bool reverse, bool smooth) override; 35 void JumpTo(int32_t index, bool smooth, ScrollAlign align, int32_t source) override; 36 bool IsAtEnd() const override; 37 38 double GetCurrentPosition() const; 39 }; 40 41 } // namespace OHOS::Ace::NG 42 43 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_SCROLL_SCROLL_POSITION_CONTROLLER_H 44