156 lines
3.3 KiB
C++
156 lines
3.3 KiB
C++
/*
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* Copyright 2006 - 2010, Haiku, Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef AREA_H
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#define AREA_H
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#include <ObjectList.h>
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#include <Referenceable.h>
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#include <Rect.h>
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#include <Size.h>
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#include <String.h>
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class BLayoutItem;
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class BView;
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namespace LinearProgramming {
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class LinearSpec;
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class Constraint;
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};
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namespace BALM {
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class Column;
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class Row;
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class XTab;
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class YTab;
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class RowColumnManager;
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/**
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* Rectangular area in the GUI, defined by a tab on each side.
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*/
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class Area {
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public:
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~Area();
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int32 ID() const;
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void SetID(int32 id);
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BLayoutItem* Item();
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XTab* Left() const;
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XTab* Right() const;
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YTab* Top() const;
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YTab* Bottom() const;
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void SetLeft(XTab* left);
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void SetRight(XTab* right);
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void SetTop(YTab* top);
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void SetBottom(YTab* bottom);
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Row* GetRow() const;
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Column* GetColumn() const;
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double ContentAspectRatio() const;
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void SetContentAspectRatio(double ratio);
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BSize ShrinkPenalties() const;
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BSize GrowPenalties() const;
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void SetShrinkPenalties(BSize shrink);
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void SetGrowPenalties(BSize grow);
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void GetInsets(float* left, float* top, float* right,
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float* bottom) const;
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float LeftInset() const;
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float TopInset() const;
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float RightInset() const;
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float BottomInset() const;
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void SetInsets(float insets);
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void SetInsets(float horizontal, float vertical);
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void SetInsets(float left, float top, float right,
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float bottom);
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void SetLeftInset(float left);
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void SetTopInset(float top);
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void SetRightInset(float right);
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void SetBottomInset(float bottom);
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BString ToString() const;
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LinearProgramming::Constraint*
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SetWidthAs(Area* area, float factor = 1.0f);
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LinearProgramming::Constraint*
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SetHeightAs(Area* area, float factor = 1.0f);
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void InvalidateSizeConstraints();
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BRect Frame() const;
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private:
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Area(BLayoutItem* item);
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void _Init(LinearProgramming::LinearSpec* ls,
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XTab* left, YTab* top, XTab* right,
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YTab* bottom, RowColumnManager* manager);
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void _Init(LinearProgramming::LinearSpec* ls,
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Row* row, Column* column,
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RowColumnManager* manager);
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void _DoLayout();
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void _UpdateMinSizeConstraint(BSize min);
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void _UpdateMaxSizeConstraint(BSize max);
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private:
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friend class BALMLayout;
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friend class RowColumnManager;
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BLayoutItem* fLayoutItem;
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int32 fID;
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LinearProgramming::LinearSpec* fLS;
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BReference<XTab> fLeft;
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BReference<XTab> fRight;
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BReference<YTab> fTop;
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BReference<YTab> fBottom;
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Row* fRow;
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Column* fColumn;
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BSize fShrinkPenalties;
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BSize fGrowPenalties;
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BSize fTopLeftInset;
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BSize fRightBottomInset;
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double fContentAspectRatio;
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RowColumnManager* fRowColumnManager;
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BObjectList<LinearProgramming::Constraint> fConstraints;
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LinearProgramming::Constraint* fMinContentWidth;
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LinearProgramming::Constraint* fMaxContentWidth;
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LinearProgramming::Constraint* fMinContentHeight;
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LinearProgramming::Constraint* fMaxContentHeight;
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LinearProgramming::Constraint* fContentAspectRatioC;
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uint32 _reserved[2];
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};
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} // namespace BALM
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using BALM::Area;
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#endif // AREA_H
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