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_COMPONENTS_STACK_RENDER_STACK_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_STACK_RENDER_STACK_H 18 19 #include "core/components/common/layout/constants.h" 20 #include "core/components/common/properties/alignment.h" 21 #include "core/components/positioned/render_positioned.h" 22 #include "core/pipeline/base/render_node.h" 23 24 namespace OHOS::Ace { 25 26 class ACE_EXPORT RenderStack : public RenderNode { 27 DECLARE_ACE_TYPE(RenderStack, RenderNode); 28 29 public: 30 static RefPtr<RenderNode> Create(); 31 32 void Update(const RefPtr<Component>& component) override; 33 34 void PerformLayout() override; 35 GetOverflowFlag()36 Overflow GetOverflowFlag() const 37 { 38 return overflow_; 39 } 40 IsChildOverflow()41 bool IsChildOverflow() const 42 { 43 return isChildOverflow_; 44 } 45 SetStackFit(StackFit fit)46 void SetStackFit(StackFit fit) 47 { 48 fit_ = fit; 49 } 50 SetMainStackSize(MainStackSize mainStackSize)51 void SetMainStackSize(MainStackSize mainStackSize) 52 { 53 mainStackSize_ = mainStackSize; 54 } 55 GetAlignment()56 const Alignment& GetAlignment() const 57 { 58 return align_; 59 } 60 GetStackFit()61 StackFit GetStackFit() const 62 { 63 return fit_; 64 } 65 GetOverflow()66 Overflow GetOverflow() const 67 { 68 return overflow_; 69 } 70 71 void OnAttachContext() override; 72 73 protected: 74 LayoutParam MakeNonPositionedInnerLayoutParam(const RefPtr<RenderNode>& firstChild) const; 75 LayoutParam MakePositionedInnerLayoutParam( 76 const RefPtr<RenderPositioned>& item, const RefPtr<RenderNode>& firstChild) const; 77 78 Offset GetNonPositionedChildOffset(const Size& childSize); 79 Offset GetPositionedChildOffset(const RefPtr<RenderPositioned>& item); 80 81 virtual void DetermineStackSize(bool hasNonPositioned); SetChildrenStatus()82 virtual void SetChildrenStatus() {} 83 private: 84 Alignment align_; 85 StackFit fit_ = StackFit::KEEP; 86 Overflow overflow_ = Overflow::OBSERVABLE; 87 bool isChildOverflow_ = false; 88 MainStackSize mainStackSize_ = MainStackSize::NORMAL; 89 }; 90 91 } // namespace OHOS::Ace 92 93 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_STACK_RENDER_STACK_H 94