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_NAVIGATION_TITLE_BAR_LAYOUT_ALGORITHM_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_NAVIGATION_TITLE_BAR_LAYOUT_ALGORITHM_H 18 19 #include "base/memory/referenced.h" 20 #include "core/components_ng/layout/layout_algorithm.h" 21 #include "core/components_ng/layout/layout_wrapper.h" 22 #include "core/components_ng/pattern/navigation/title_bar_layout_property.h" 23 #include "core/components_ng/pattern/navigation/title_bar_node.h" 24 25 namespace OHOS::Ace::NG { 26 27 class ACE_EXPORT TitleBarLayoutAlgorithm : public LayoutAlgorithm { 28 DECLARE_ACE_TYPE(TitleBarLayoutAlgorithm, LayoutAlgorithm); 29 30 public: 31 TitleBarLayoutAlgorithm() = default; 32 ~TitleBarLayoutAlgorithm() override = default; 33 void Measure(LayoutWrapper* layoutWrapper) override; 34 void Layout(LayoutWrapper* layoutWrapper) override; 35 GetInitialTitleOffsetY()36 float GetInitialTitleOffsetY() const 37 { 38 return initialTitleOffsetY_; 39 } 40 SetInitialTitleOffsetY(float initialTitleOffsetY)41 void SetInitialTitleOffsetY(float initialTitleOffsetY) 42 { 43 initialTitleOffsetY_ = initialTitleOffsetY; 44 } 45 IsInitialTitle()46 bool IsInitialTitle() const 47 { 48 return isInitialTitle_; 49 } 50 MarkIsInitialTitle(bool isInitialTitle)51 void MarkIsInitialTitle(bool isInitialTitle) 52 { 53 isInitialTitle_ = isInitialTitle; 54 } 55 GetInitialSubtitleOffsetY()56 float GetInitialSubtitleOffsetY() const 57 { 58 return initialSubtitleOffsetY_; 59 } 60 SetInitialSubtitleOffsetY(float initialSubtitleOffsetY)61 void SetInitialSubtitleOffsetY(float initialSubtitleOffsetY) 62 { 63 initialSubtitleOffsetY_ = initialSubtitleOffsetY; 64 } 65 IsInitialSubtitle()66 bool IsInitialSubtitle() const 67 { 68 return isInitialSubtitle_; 69 } 70 MarkIsInitialSubtitle(bool isInitialSubtitle)71 void MarkIsInitialSubtitle(bool isInitialSubtitle) 72 { 73 isInitialSubtitle_ = isInitialSubtitle; 74 } 75 SetMinTitleHeight(float minTitleHeight)76 void SetMinTitleHeight(float minTitleHeight) 77 { 78 minTitleHeight_ = minTitleHeight; 79 } 80 GetMinTitleHeight()81 float GetMinTitleHeight() const 82 { 83 return minTitleHeight_; 84 } 85 86 private: 87 void MeasureBackButton(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 88 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty); 89 90 void MeasureSubtitle(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 91 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty, const SizeF& titleBarSize, float occupiedWidth); 92 93 void MeasureTitle(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 94 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty, const SizeF& titleBarSize, float maxWidth); 95 96 float GetTitleWidth(const RefPtr<TitleBarNode>& titleBarNode, 97 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty, const SizeF& titleBarSize); 98 99 void MeasureMenu(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 100 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty); 101 102 void LayoutBackButton(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 103 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty); 104 105 void LayoutTitle(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 106 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty, float subtitleHeight); 107 108 void LayoutSubtitle(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 109 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty, float titleHeight); 110 void LayoutMenu(LayoutWrapper* layoutWrapper, const RefPtr<TitleBarNode>& titleBarNode, 111 const RefPtr<TitleBarLayoutProperty>& titleBarLayoutProperty, float subtitleHeight); 112 113 bool GetNavigationBackButtonState(const RefPtr<TitleBarNode>& titleBarNode); 114 115 // set variables from theme 116 void InitializeTheme(); 117 118 Dimension maxPaddingStart_; 119 Dimension maxPaddingEnd_; 120 Dimension defaultPaddingStart_; 121 Dimension menuHeight_; 122 Dimension iconSize_; 123 Dimension titleFontSize_; 124 125 float initialTitleOffsetY_ = 0.0f; 126 bool isInitialTitle_ = true; 127 float initialSubtitleOffsetY_ = 0.0f; 128 bool isInitialSubtitle_ = true; 129 float minTitleHeight_ = 0.0f; 130 float menuWidth_ = 0.0f; 131 132 ACE_DISALLOW_COPY_AND_MOVE(TitleBarLayoutAlgorithm); 133 }; 134 135 } // namespace OHOS::Ace::NG 136 137 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_NAVIGATION_TITLE_BAR_LAYOUT_ALGORITHM_H 138