1 /* 2 * Copyright 2006 - 2010, Haiku, Inc. All rights reserved. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef AREA_H 6 #define AREA_H 7 8 9 #include <vector> 10 11 #include <Alignment.h> 12 #include <List.h> 13 #include <Size.h> 14 #include <SupportDefs.h> 15 #include <View.h> 16 17 #include "Column.h" 18 #include "LinearSpec.h" 19 #include "Row.h" 20 #include "Tab.h" 21 22 23 class Constraint; 24 25 26 namespace BALM { 27 28 29 class GroupItem { 30 public: 31 GroupItem(BLayoutItem* item); 32 GroupItem(BView* view); 33 34 BLayoutItem* LayoutItem(); 35 BView* View(); 36 37 const std::vector<GroupItem>& GroupItems(); 38 enum orientation Orientation(); 39 40 GroupItem& operator|(const GroupItem& right); 41 GroupItem& operator/(const GroupItem& bottom); 42 private: 43 GroupItem(); 44 45 void _Init(BLayoutItem* item, BView* view, 46 enum orientation orien = B_HORIZONTAL); 47 GroupItem& _AddItem(const GroupItem& item, 48 enum orientation orien); 49 50 BLayoutItem* fLayoutItem; 51 BView* fView; 52 53 std::vector<GroupItem> fGroupItems; 54 enum orientation fOrientation; 55 }; 56 57 58 class RowColumnManager; 59 60 61 /** 62 * Rectangular area in the GUI, defined by a tab on each side. 63 */ 64 class Area { 65 public: 66 ~Area(); 67 68 BLayoutItem* Item(); 69 70 XTab* Left() const; 71 XTab* Right() const; 72 YTab* Top() const; 73 YTab* Bottom() const; 74 void SetLeft(XTab* left); 75 void SetRight(XTab* right); 76 void SetTop(YTab* top); 77 void SetBottom(YTab* bottom); 78 79 Row* GetRow() const; 80 Column* GetColumn() const; 81 82 double ContentAspectRatio() const; 83 void SetContentAspectRatio(double ratio); 84 85 BSize ShrinkPenalties() const; 86 BSize GrowPenalties() const; 87 void SetShrinkPenalties(BSize shrink); 88 void SetGrowPenalties(BSize grow); 89 90 float LeftInset() const; 91 float TopInset() const; 92 float RightInset() const; 93 float BottomInset() const; 94 void SetLeftInset(float left); 95 void SetTopInset(float top); 96 void SetRightInset(float right); 97 void SetBottomInset(float bottom); 98 99 BString ToString() const; 100 101 Constraint* SetWidthAs(Area* area, float factor = 1.0f); 102 Constraint* SetHeightAs(Area* area, float factor = 1.0f); 103 104 void InvalidateSizeConstraints(); 105 106 BRect Frame() const; 107 BRect ItemFrame() const; 108 109 private: 110 Area(BLayoutItem* item); 111 112 void _Init(LinearSpec* ls, XTab* left, YTab* top, 113 XTab* right, YTab* bottom, 114 RowColumnManager* manager); 115 void _Init(LinearSpec* ls, Row* row, Column* column, 116 RowColumnManager* manager); 117 118 void _DoLayout(); 119 120 void _UpdateMinSizeConstraint(BSize min); 121 void _UpdateMaxSizeConstraint(BSize max); 122 private: 123 BLayoutItem* fLayoutItem; 124 125 LinearSpec* fLS; 126 127 BReference<XTab> fLeft; 128 BReference<XTab> fRight; 129 BReference<YTab> fTop; 130 BReference<YTab> fBottom; 131 132 Row* fRow; 133 Column* fColumn; 134 135 BSize fShrinkPenalties; 136 BSize fGrowPenalties; 137 138 BSize fTopLeftInset; 139 BSize fRightBottomInset; 140 141 BObjectList<Constraint> fConstraints; 142 Constraint* fMinContentWidth; 143 Constraint* fMaxContentWidth; 144 Constraint* fMinContentHeight; 145 Constraint* fMaxContentHeight; 146 double fContentAspectRatio; 147 Constraint* fContentAspectRatioC; 148 149 RowColumnManager* fRowColumnManager; 150 public: 151 friend class BALMLayout; 152 friend class RowColumnManager; 153 154 }; 155 156 } // namespace BALM 157 158 using BALM::Area; 159 using BALM::GroupItem; 160 161 #endif // AREA_H 162 163