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_WRAP_RENDER_WRAP_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_WRAP_RENDER_WRAP_H 18 19 #include <list> 20 #include <vector> 21 22 #include "core/components/box/render_box_base.h" 23 #include "core/components/common/layout/constants.h" 24 #include "core/pipeline/base/render_node.h" 25 26 namespace OHOS::Ace { 27 28 struct ContentInfo { ContentInfoContentInfo29 ContentInfo(double mainLength, double crossLength, int32_t count, const std::list<RefPtr<RenderNode>>& itemList) 30 : mainLength_(mainLength), crossLength_(crossLength), count_(count), itemList_(itemList) 31 {} 32 33 double mainLength_ = 0.0; 34 double crossLength_ = 0.0; 35 int32_t count_ = 0; 36 std::list<RefPtr<RenderNode>> itemList_; 37 double maxBaselineDistance = 0.0; 38 }; 39 40 class ACE_EXPORT RenderWrap : public RenderNode { 41 DECLARE_ACE_TYPE(RenderWrap, RenderNode); 42 43 public: 44 static RefPtr<RenderNode> Create(); 45 46 void Update(const RefPtr<Component>& component) override; 47 48 void PerformLayout() override; 49 50 Size GetLeftSize(double crossLength, double mainLeftLength, double crossLeftLength) const; 51 52 void LayoutWholeWrap(); 53 54 Offset GetContentOffset(double totalCrossLength) const; 55 56 void TraverseContent(const Offset& startPosition, const Offset& betweenPosition) const; 57 58 void PositionedItem( 59 double betweenSpace, const ContentInfo& content, const Offset& position, double crossSpace) const; 60 61 Offset GetItemMainOffset(double mainSpace) const; 62 SetWrapLayoutSize(double mainLength,double crossLength)63 void SetWrapLayoutSize(double mainLength, double crossLength) 64 { 65 Size wrapSize; 66 if (direction_ == WrapDirection::HORIZONTAL || direction_ == WrapDirection::HORIZONTAL_REVERSE) { 67 wrapSize = GetLayoutParam().Constrain(Size(mainLength, crossLength)); 68 } else { 69 wrapSize = GetLayoutParam().Constrain(Size(crossLength, mainLength)); 70 } 71 if (horizontalMeasure_ == MeasureType::PARENT) { 72 wrapSize.SetWidth(GetLayoutParam().GetMaxSize().Width()); 73 } 74 if (verticalMeasure_ == MeasureType::PARENT) { 75 wrapSize.SetHeight(GetLayoutParam().GetMaxSize().Height()); 76 } 77 SetLayoutSize(wrapSize); 78 LOGD("wrap::wrap layout size width:%lf, height:%lf", GetLayoutSize().Width(), GetLayoutSize().Height()); 79 } 80 GetDialogDirection()81 WrapDirection GetDialogDirection() const 82 { 83 return dialogDirection_; 84 } 85 GetDirection()86 WrapDirection GetDirection() const 87 { 88 return direction_; 89 } 90 GetJustifyContent()91 WrapAlignment GetJustifyContent() const 92 { 93 return mainAlignment_; 94 } 95 GetAlignItems()96 WrapAlignment GetAlignItems() const 97 { 98 return crossAlignment_; 99 } 100 GetAlignContent()101 WrapAlignment GetAlignContent() const 102 { 103 return alignment_; 104 } 105 106 protected: 107 void PerformLayoutInitialize(); 108 void PlaceItemAndLog(const RefPtr<RenderNode>& node, const Offset& position, const std::string& align) const; 109 void HandleCenterAlignment(double totalCrossSpace, const RefPtr<RenderNode>& node, const Offset& position, 110 double betweenSpace, Offset& itemPositionOffset) const; 111 void HandleEndAlignment(double totalCrossSpace, const RefPtr<RenderNode>& node, const Offset& position, 112 double betweenSpace, Offset& itemPositionOffset) const; 113 void HandleStartAlignment( 114 const RefPtr<RenderNode>& item, const Offset& position, double betweenSpace, Offset& itemPositionOffset) const; 115 void HandleBaselineAlignment(double totalCrossSpace, const RefPtr<RenderNode>& node, const Offset& position, 116 double betweenSpace, Offset& itemPositionOffset) const; 117 double GetMainItemLength(const RefPtr<RenderNode>& item) const; 118 double GetCrossItemLength(const RefPtr<RenderNode>& item) const; 119 120 void HandleDialogStretch(const LayoutParam& layoutParam); 121 std::list<ContentInfo> contentList_; 122 123 void ClearRenderObject() override; 124 bool MaybeRelease() override; 125 126 private: 127 void SetDefault(const RefPtr<RenderNode>& item); 128 void AddBlock(int32_t& count, const RefPtr<RenderNode>& item, std::list<RefPtr<RenderNode>>& itemsList, 129 double& currentMainLength, double& currentCrossLength, double& baselineDistance); 130 void CalculateMargin(const RefPtr<RenderNode>& item, bool& beforeIsBlock, double& beforeMarginBottom); 131 WrapDirection direction_ = WrapDirection::VERTICAL; 132 WrapAlignment alignment_ = WrapAlignment::START; 133 WrapAlignment mainAlignment_ = WrapAlignment::START; 134 WrapAlignment crossAlignment_ = WrapAlignment::START; 135 Dimension spacing_; 136 Dimension contentSpace_; 137 double mainLengthLimit_ = 0.0; 138 double crossLengthLimit_ = 0.0; 139 double totalMainLength_ = 0.0; 140 double totalCrossLength_ = 0.0; 141 MeasureType horizontalMeasure_ = MeasureType::CONTENT; 142 MeasureType verticalMeasure_ = MeasureType::CONTENT; 143 144 WrapDirection dialogDirection_ = WrapDirection::HORIZONTAL; 145 bool dialogStretch_ = false; 146 147 bool isLeftToRight_ = true; 148 }; 149 150 } // namespace OHOS::Ace 151 152 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_WRAP_RENDER_WRAP_H 153