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_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/common/layout/constants.h" 23 #include "core/pipeline/base/render_node.h" 24 25 namespace OHOS::Ace { 26 27 struct ContentInfo { ContentInfoContentInfo28 ContentInfo(double mainLength, double crossLength, int32_t count, const std::list<RefPtr<RenderNode>>& itemList) 29 : mainLength_(mainLength), crossLength_(crossLength), count_(count), itemList_(itemList) 30 {} 31 32 double mainLength_ = 0.0; 33 double crossLength_ = 0.0; 34 int32_t count_ = 0; 35 std::list<RefPtr<RenderNode>> itemList_; 36 double maxBaselineDistance = 0.0; 37 }; 38 39 class ACE_EXPORT RenderWrap : public RenderNode { 40 DECLARE_ACE_TYPE(RenderWrap, RenderNode); 41 42 public: 43 static RefPtr<RenderNode> Create(); 44 45 void Update(const RefPtr<Component>& component) override; 46 47 void PerformLayout() override; 48 49 Size GetLeftSize(double crossLength, double mainLeftLength, double crossLeftLength) const; 50 51 void LayoutWholeWrap(); 52 53 Offset GetContentOffset(double totalCrossLength) const; 54 55 void TraverseContent(const Offset& startPosition, const Offset& betweenPosition) const; 56 57 void PositionedItem( 58 double betweenSpace, const ContentInfo& content, const Offset& position, double crossSpace) const; 59 60 Offset GetItemMainOffset(double mainSpace) const; 61 SetWrapLayoutSize(double mainLength,double crossLength)62 void SetWrapLayoutSize(double mainLength, double crossLength) 63 { 64 Size wrapSize; 65 if (direction_ == WrapDirection::HORIZONTAL) { 66 wrapSize = GetLayoutParam().Constrain(Size(mainLength, crossLength)); 67 } else { 68 wrapSize = GetLayoutParam().Constrain(Size(crossLength, mainLength)); 69 } 70 if (horizontalMeasure_ == MeasureType::PARENT) { 71 wrapSize.SetWidth(GetLayoutParam().GetMaxSize().Width()); 72 } 73 if (verticalMeasure_ == MeasureType::PARENT) { 74 wrapSize.SetHeight(GetLayoutParam().GetMaxSize().Height()); 75 } 76 SetLayoutSize(wrapSize); 77 LOGD("wrap::wrap layout size width:%lf, height:%lf", GetLayoutSize().Width(), GetLayoutSize().Height()); 78 } 79 GetDialogDirection()80 WrapDirection GetDialogDirection() const 81 { 82 return dialogDirection_; 83 } 84 GetDirection()85 WrapDirection GetDirection() const 86 { 87 return direction_; 88 } 89 GetJustifyContent()90 WrapAlignment GetJustifyContent() const 91 { 92 return mainAlignment_; 93 } 94 GetAlignItems()95 WrapAlignment GetAlignItems() const 96 { 97 return crossAlignment_; 98 } 99 GetAlignContent()100 WrapAlignment GetAlignContent() const 101 { 102 return alignment_; 103 } 104 105 protected: 106 void PerformLayoutInitialize(); 107 void PlaceItemAndLog(const RefPtr<RenderNode>& node, const Offset& position, const std::string& align) const; 108 void HandleCenterAlignment(double totalCrossSpace, const RefPtr<RenderNode>& node, const Offset& position, 109 double betweenSpace, Offset& itemPositionOffset) const; 110 void HandleEndAlignment(double totalCrossSpace, const RefPtr<RenderNode>& node, const Offset& position, 111 double betweenSpace, Offset& itemPositionOffset) const; 112 void HandleStartAlignment( 113 const RefPtr<RenderNode>& item, const Offset& position, double betweenSpace, Offset& itemPositionOffset) const; 114 void HandleBaselineAlignment(double totalCrossSpace, const RefPtr<RenderNode>& node, const Offset& position, 115 double betweenSpace, Offset& itemPositionOffset) const; 116 double GetMainItemLength(const RefPtr<RenderNode>& item) const; 117 double GetCrossItemLength(const RefPtr<RenderNode>& item) const; 118 119 void HandleDialogStretch(const LayoutParam& layoutParam); 120 std::list<ContentInfo> contentList_; 121 122 void ClearRenderObject() override; 123 bool MaybeRelease() override; 124 125 private: 126 WrapDirection direction_ = WrapDirection::VERTICAL; 127 WrapAlignment alignment_ = WrapAlignment::START; 128 WrapAlignment mainAlignment_ = WrapAlignment::START; 129 WrapAlignment crossAlignment_ = WrapAlignment::START; 130 Dimension spacing_; 131 Dimension contentSpace_; 132 double mainLengthLimit_ = 0.0; 133 double crossLengthLimit_ = 0.0; 134 double totalMainLength_ = 0.0; 135 double totalCrossLength_ = 0.0; 136 MeasureType horizontalMeasure_ = MeasureType::CONTENT; 137 MeasureType verticalMeasure_ = MeasureType::CONTENT; 138 139 WrapDirection dialogDirection_ = WrapDirection::HORIZONTAL; 140 bool dialogStretch_ = false; 141 142 bool isLeftToRight_ = true; 143 }; 144 145 } // namespace OHOS::Ace 146 147 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_WRAP_RENDER_WRAP_H 148