1 /*
2  * Copyright (c) 2021-2022 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_SCROLL_RENDER_SINGLE_CHILD_SCROLL_H
17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_SCROLL_RENDER_SINGLE_CHILD_SCROLL_H
18 
19 #include "core/components/scroll/render_scroll.h"
20 
21 namespace OHOS::Ace {
22 
23 class RenderSingleChildScroll : public RenderScroll {
24     DECLARE_ACE_TYPE(RenderSingleChildScroll, RenderScroll);
25 
26 public:
27     static RefPtr<RenderNode> Create();
28 
29     void MoveChildToViewPort(const Size& size, const Offset& childOffset, const Offset& effectOffset);
30     bool IsUseOnly() override;
31 
32 protected:
33     void PerformLayout() override;
34     void Update(const RefPtr<Component>& component) override;
35     void AdjustTouchRestrict(TouchRestrict& touchRestrict) override;
36 
37 private:
38     LayoutParam MakeInnerLayoutParam() const;
39     bool CalculateMainScrollExtent(const Size& itemSize);
40     void UpdateAccessibilityAttr();
41     void PostForceMakeNeedLayout();
42     bool IsDeclarativePara();
43 
44     bool isEffectSetted_ = false;
45     double childLastMainSize_ = -std::numeric_limits<double>::max();
46     bool initial_ = true;
47 };
48 
49 } // namespace OHOS::Ace
50 
51 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_SCROLL_RENDER_SINGLE_CHILD_SCROLL_H
52