1 /* 2 * Copyright (c) 2024 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_BASE_EXTENSION_HANDLER_H 17 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_BASE_EXTENSION_HANDLER_H 18 19 #include <cmath> 20 #include <cstdint> 21 #include <functional> 22 23 #include "base/memory/ace_type.h" 24 #include "base/memory/referenced.h" 25 #include "base/utils/macros.h" 26 #include "core/components_ng/base/modifier.h" 27 #include "core/components_ng/property/layout_constraint.h" 28 29 namespace OHOS::Ace::NG { 30 struct ExtensionLayoutConstraint { 31 int32_t maxWidth { 0 }; 32 int32_t minWidth { 0 }; 33 int32_t maxHeight { 0 }; 34 int32_t minHeight { 0 }; 35 int32_t parentIdealWidth { 0 }; // 设置百分比基准 36 int32_t parentIdealHeight { 0 }; // 设置百分比基准 37 38 static ExtensionLayoutConstraint Create(const LayoutConstraintF& layoutConstraintF); 39 }; 40 41 class FrameNode; 42 43 class ACE_EXPORT ExtensionHandler : public virtual AceType { 44 DECLARE_ACE_TYPE(ExtensionHandler, AceType); 45 46 public: 47 void Measure(const ExtensionLayoutConstraint& layoutConstraint); 48 void Layout(int32_t width, int32_t height, int32_t positionX, int32_t positionY); 49 void Draw(DrawingContext& context); 50 void ForegroundDraw(DrawingContext& context); 51 void OverlayDraw(DrawingContext& context); 52 53 // 调用封装内部原始布局，绘制方法。 54 void InnerMeasure(const ExtensionLayoutConstraint& layoutConstraint); 55 void InnerLayout(int32_t width, int32_t height, int32_t positionX, int32_t positionY); 56 void InnerDraw(DrawingContext& context); 57 void InnerForegroundDraw(DrawingContext& context); 58 void InnerOverlayDraw(DrawingContext& context); 59 SetInnerMeasureImpl(std::function<void (const ExtensionLayoutConstraint &)> && impl)60 void SetInnerMeasureImpl(std::function<void(const ExtensionLayoutConstraint&)>&& impl) 61 { 62 innerMeasureImpl_ = std::move(impl); 63 } 64 SetInnerLayoutImpl(std::function<void (int32_t,int32_t,int32_t,int32_t)> && impl)65 void SetInnerLayoutImpl(std::function<void(int32_t, int32_t, int32_t, int32_t)>&& impl) 66 { 67 innerLayoutImpl_ = std::move(impl); 68 } 69 SetInnerDrawImpl(std::function<void (DrawingContext & Context)> && impl)70 void SetInnerDrawImpl(std::function<void(DrawingContext& Context)>&& impl) 71 { 72 innerDrawImpl_ = std::move(impl); 73 } 74 SetInnerForegroundDrawImpl(std::function<void (DrawingContext & Context)> && impl)75 void SetInnerForegroundDrawImpl(std::function<void(DrawingContext& Context)>&& impl) 76 { 77 innerForegroundDrawImpl_ = std::move(impl); 78 } 79 SetInnerOverlayDrawImpl(std::function<void (DrawingContext & Context)> && impl)80 void SetInnerOverlayDrawImpl(std::function<void(DrawingContext& Context)>&& impl) 81 { 82 innerOverlayDrawImpl_ = std::move(impl); 83 } 84 85 void InvalidateRender(); 86 87 void OverlayRender(); 88 89 void ForegroundRender(); 90 SetInvalidateRenderImpl(std::function<void ()> && impl)91 void SetInvalidateRenderImpl(std::function<void()>&& impl) 92 { 93 invalidateRender_ = std::move(impl); 94 } 95 SetOverlayRenderImpl(std::function<void ()> && impl)96 void SetOverlayRenderImpl(std::function<void()>&& impl) 97 { 98 overlayRender_ = std::move(impl); 99 } 100 SetForeGroundRenderImpl(std::function<void ()> && impl)101 void SetForeGroundRenderImpl(std::function<void()>&& impl) 102 { 103 foreGroundRender_ = std::move(impl); 104 } 105 SetDrawModifier(const RefPtr<NG::DrawModifier> & drawModifier)106 void SetDrawModifier(const RefPtr<NG::DrawModifier>& drawModifier) 107 { 108 drawModifier_ = drawModifier; 109 } 110 HasCustomerMeasure()111 virtual bool HasCustomerMeasure() const 112 { 113 return false; 114 } 115 HasCustomerLayout()116 virtual bool HasCustomerLayout() const 117 { 118 return false; 119 } 120 NeedRender()121 virtual bool NeedRender() const 122 { 123 return drawModifier_ || needRender_ ; 124 } 125 ResetNeedRender()126 void ResetNeedRender() 127 { 128 needRender_ = false; 129 } 130 HasDrawModifier()131 bool HasDrawModifier() 132 { 133 return drawModifier_; 134 } 135 AttachFrameNode(FrameNode * node)136 void AttachFrameNode(FrameNode* node) 137 { 138 node_ = node; 139 } 140 141 protected: 142 virtual void OnMeasure(const ExtensionLayoutConstraint& layoutConstraint); 143 virtual void OnLayout(int32_t width, int32_t height, int32_t positionX, int32_t positionY); 144 virtual void OnForegroundDraw(DrawingContext& context); 145 virtual void OnDraw(DrawingContext& context); 146 virtual void OnOverlayDraw(DrawingContext& context); 147 148 private: 149 std::function<void(const ExtensionLayoutConstraint&)> innerMeasureImpl_; 150 std::function<void(int32_t, int32_t, int32_t, int32_t)> innerLayoutImpl_; 151 std::function<void(DrawingContext&)> innerDrawImpl_; 152 std::function<void(DrawingContext&)> innerForegroundDrawImpl_; 153 std::function<void(DrawingContext&)> innerOverlayDrawImpl_; 154 std::function<void()> invalidateRender_; 155 std::function<void()> overlayRender_; 156 std::function<void()> foreGroundRender_; 157 bool needRender_ = true; 158 159 RefPtr<NG::DrawModifier> drawModifier_; 160 FrameNode* node_; 161 }; 162 163 } // namespace OHOS::Ace::NG 164 165 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_BASE_EXTENSION_HANDLER_H 166