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_LIST_LIST_ITEM_LAYOUT_ALGORITHM_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_LIST_LIST_ITEM_LAYOUT_ALGORITHM_H 18 19 #include "base/geometry/axis.h" 20 #include "core/components_ng/layout/layout_algorithm.h" 21 #include "core/components_ng/layout/layout_wrapper.h" 22 #include "core/components_v2/list/list_properties.h" 23 24 namespace OHOS::Ace::NG { 25 class ACE_EXPORT ListItemLayoutAlgorithm : public BoxLayoutAlgorithm { 26 DECLARE_ACE_TYPE(ListItemLayoutAlgorithm, BoxLayoutAlgorithm); 27 public: ListItemLayoutAlgorithm(int32_t startNodeIndex,int32_t endNodeIndex,int32_t childNodeIndex)28 ListItemLayoutAlgorithm(int32_t startNodeIndex, int32_t endNodeIndex, int32_t childNodeIndex) 29 :startNodeIndex_(startNodeIndex), endNodeIndex_(endNodeIndex), childNodeIndex_(childNodeIndex) {} 30 31 void Measure(LayoutWrapper* layoutWrapper) override; 32 33 void Layout(LayoutWrapper* layoutWrapper) override; 34 35 void PerformMeasureSelf(LayoutWrapper* layoutWrapper) const; 36 SetAxis(Axis axis)37 void SetAxis(Axis axis) 38 { 39 axis_ = axis; 40 } 41 SetCurOffset(float curOffset)42 void SetCurOffset(float curOffset) 43 { 44 curOffset_ = curOffset; 45 } 46 SetStartNodeSize(float startNodeSize)47 void SetStartNodeSize(float startNodeSize) 48 { 49 startNodeSize_ = startNodeSize; 50 } 51 GetStartNodeSize()52 float GetStartNodeSize() const 53 { 54 return startNodeSize_; 55 } 56 SetEndNodeSize(float endNodeSize)57 void SetEndNodeSize(float endNodeSize) 58 { 59 endNodeSize_ = endNodeSize; 60 } 61 GetEndNodeSize()62 float GetEndNodeSize() const 63 { 64 return endNodeSize_; 65 } 66 SetIndexInList(int32_t index)67 void SetIndexInList(int32_t index) 68 { 69 indexInList_ = index; 70 } 71 SetIndexInListItemGroup(int32_t indexInGroup)72 void SetIndexInListItemGroup(int32_t indexInGroup) 73 { 74 indexInListItemGroup_ = indexInGroup; 75 } 76 GetIndexInList()77 int32_t GetIndexInList() const 78 { 79 return indexInList_; 80 } 81 GetIndexInListItemGroup()82 int32_t GetIndexInListItemGroup() const 83 { 84 return indexInListItemGroup_; 85 } 86 SetHasStartDeleteArea(bool hasStartDeleteArea)87 void SetHasStartDeleteArea(bool hasStartDeleteArea) 88 { 89 hasStartDeleteArea_ = hasStartDeleteArea; 90 } 91 SetHasEndDeleteArea(bool hasEndDeleteArea)92 void SetHasEndDeleteArea(bool hasEndDeleteArea) 93 { 94 hasEndDeleteArea_ = hasEndDeleteArea; 95 } 96 97 bool IsRTLAndVertical(LayoutWrapper* layoutWrapper) const; 98 float SetReverseValue(LayoutWrapper* layoutWrapper, float offset); 99 100 private: 101 int32_t startNodeIndex_; 102 int32_t endNodeIndex_; 103 int32_t childNodeIndex_; 104 105 int32_t indexInList_ = 0; 106 int32_t indexInListItemGroup_ = -1; 107 108 float curOffset_ = 0.0f; 109 float startNodeSize_ = 0.0f; 110 float endNodeSize_ = 0.0f; 111 bool hasStartDeleteArea_ = false; 112 bool hasEndDeleteArea_ = false; 113 114 Axis axis_ = Axis::VERTICAL; 115 }; 116 } // namespace OHOS::Ace::NG 117 118 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_LIST_LIST_LAYOUT_ALGORITHM_H