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 #ifndef FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_SELECT_OVERLAY_LAYOUT_ALGORITHM_H
16 #define FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_SELECT_OVERLAY_LAYOUT_ALGORITHM_H
17 
18 #include <optional>
19 #include <utility>
20 
21 #include "base/geometry/ng/offset_t.h"
22 #include "base/utils/noncopyable.h"
23 #include "core/components_ng/layout/box_layout_algorithm.h"
24 #include "core/components_ng/pattern/select_overlay/select_overlay_property.h"
25 
26 namespace OHOS::Ace::NG {
27 
28 struct AvoidStrategyMember {
29     float menuHeight = 0.f;
30     double menuSpacingBetweenText = 0.0;
31     double menuSpacingBetweenHandle = 0.0;
32     double safeSpacing = 0.0;
33     double bottomLimitOffsetY = 0.0;
34     double menuSpacing = 0.0;
35     double keyboardInsertStart = 0.0;
36     bool hasKeyboard = false;
37     bool downHandleIsReallyShow = true;
38     double selectAreaTop = 0.0;
39     double selectAndRootRectAreaTop = 0.0;
40     double selectAndRootRectAreaBottom = 0.0;
41 };
42 
43 class ACE_EXPORT SelectOverlayLayoutAlgorithm : public BoxLayoutAlgorithm {
44     DECLARE_ACE_TYPE(SelectOverlayLayoutAlgorithm, BoxLayoutAlgorithm);
45 
46 public:
SelectOverlayLayoutAlgorithm(std::shared_ptr<SelectOverlayInfo> info,const OffsetF & defaultMenuEndOffset,const std::optional<float> & menuWidth,const std::optional<float> & menuHeight)47     explicit SelectOverlayLayoutAlgorithm(std::shared_ptr<SelectOverlayInfo> info, const OffsetF& defaultMenuEndOffset,
48         const std::optional<float>& menuWidth, const std::optional<float>& menuHeight)
49         : info_(std::move(info)), defaultMenuEndOffset_(defaultMenuEndOffset), menuWidth_(menuWidth),
50           menuHeight_(menuHeight)
51     {}
52     ~SelectOverlayLayoutAlgorithm() override = default;
53 
54     void Layout(LayoutWrapper* layoutWrapper) override;
55     void Measure(LayoutWrapper* layoutWrapper) override;
56 
57     static bool CheckInShowArea(const SelectOverlayInfo& info);
58 
GetDefaultMenuStartOffset()59     const OffsetF& GetDefaultMenuStartOffset() const
60     {
61         return defaultMenuStartOffset_;
62     }
63 
GetDefaultMenuEndOffset()64     const OffsetF& GetDefaultMenuEndOffset() const
65     {
66         return defaultMenuEndOffset_;
67     }
68 
GetMenuWidth()69     const std::optional<float>& GetMenuWidth() const
70     {
71         return menuWidth_;
72     }
73 
GetMenuHeight()74     const std::optional<float>& GetMenuHeight() const
75     {
76         return menuHeight_;
77     }
78 
GetHasExtensionMenu()79     bool GetHasExtensionMenu() const
80     {
81         return hasExtensionMenu_;
82     }
83 
GetHideMoreOrBack()84     bool GetHideMoreOrBack() const
85     {
86         return hideMoreOrBack_;
87     }
88 
89     void MeasureChild(LayoutWrapper* layoutWrapper);
90     void LayoutChild(LayoutWrapper* layoutWrapper, SelectOverlayMode mode);
91     void LayoutExtensionMenu(LayoutWrapper* layoutWrapper, const RefPtr<LayoutWrapper>& button);
92 
93 private:
94     OffsetF ComputeSelectMenuPosition(LayoutWrapper* layoutWrapper);
95     OffsetF ComputeExtensionMenuPosition(LayoutWrapper* layoutWrapper, const OffsetF& offset);
96     OffsetF AdjustSelectMenuOffset(
97         LayoutWrapper* layoutWrapper, const RectF& menuRect, double spaceBetweenText, double spaceBetweenHandle);
98     OffsetF AdjustSelectMenuOffsetWhenHandlesUnshown(const RectF& menuRect, double spaceBetweenText);
99     void AdjustMenuOffsetAtSingleHandleBottom(const RectF handleRect, const RectF& menuRect, OffsetF& menuOffset,
100         double spaceBetweenText);
101     bool IsMenuAreaSmallerHandleArea(RectF handleRect, float menuHeight, float menuDistance);
102     void AdjustMenuTooFarAway(OffsetF& menuOffset, const RectF& menuRect);
103     void AdjustMenuInRootRect(OffsetF& menuOffset, const SizeF& menuSize, const SizeF& rootSize);
104     OffsetF CalculateCustomMenuByMouseOffset(LayoutWrapper* layoutWrapper);
105     OffsetF NewMenuAvoidStrategy(LayoutWrapper* layoutWrapper, float menuWidth, float menuHeight);
106     void CalculateCustomMenuLayoutConstraint(LayoutWrapper* layoutWrapper, LayoutConstraintF& layoutConstraint);
107     void CheckHideBackOrMoreButton(const RefPtr<LayoutWrapper>& extensionMenu, const RefPtr<LayoutWrapper>& button);
108     void NewMenuAvoidStrategyGetY(const AvoidStrategyMember& avoidStrategyMember, float& offsetY);
109     bool IsTextAreaSelectAll();
110     bool IsReverseLayout(LayoutWrapper* layoutWrapper) const;
111     void CheckHandleIsInClipViewPort();
112 
113     std::shared_ptr<SelectOverlayInfo> info_;
114 
115     OffsetF defaultMenuStartOffset_;
116     OffsetF defaultMenuEndOffset_;
117     std::optional<float> menuWidth_;
118     std::optional<float> menuHeight_;
119     bool hasExtensionMenu_ = false;
120     bool hideMoreOrBack_ = false;
121 
122     ACE_DISALLOW_COPY_AND_MOVE(SelectOverlayLayoutAlgorithm);
123 };
124 } // namespace OHOS::Ace::NG
125 #endif // FOUNDATION_ACE_FRAMEWORKS_CORE_COMPONENTS_NG_PATTERN_SELECT_OVERLAY_LAYOUT_ALGORITHM_H