haiku/headers/libs/alm/Area.h

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/*
* Copyright 2006 - 2010, Haiku, Inc. All rights reserved.
* Distributed under the terms of the MIT License.
*/
#ifndef AREA_H
#define AREA_H
#include <vector>
#include <Alignment.h>
#include <List.h>
#include <Size.h>
#include <SupportDefs.h>
#include <View.h>
#include "Column.h"
#include "LinearSpec.h"
#include "Row.h"
#include "Tab.h"
class Constraint;
namespace BALM {
class GroupItem {
public:
GroupItem(BLayoutItem* item);
GroupItem(BView* view);
BLayoutItem* LayoutItem();
BView* View();
const std::vector<GroupItem>& GroupItems();
enum orientation Orientation();
GroupItem& operator|(const GroupItem& right);
GroupItem& operator/(const GroupItem& bottom);
private:
GroupItem();
void _Init(BLayoutItem* item, BView* view,
enum orientation orien = B_HORIZONTAL);
GroupItem& _AddItem(const GroupItem& item,
enum orientation orien);
BLayoutItem* fLayoutItem;
BView* fView;
std::vector<GroupItem> fGroupItems;
enum orientation fOrientation;
};
/**
* Rectangular area in the GUI, defined by a tab on each side.
*/
class Area {
public:
~Area();
BView* View();
XTab* Left() const;
XTab* Right() const;
YTab* Top() const;
YTab* Bottom() const;
void SetLeft(XTab* left);
void SetRight(XTab* right);
void SetTop(YTab* top);
void SetBottom(YTab* bottom);
Row* GetRow() const;
Column* GetColumn() const;
void SetRow(Row* row);
void SetColumn(Column* column);
double ContentAspectRatio() const;
void SetContentAspectRatio(double ratio);
BSize ShrinkPenalties() const;
BSize GrowPenalties() const;
void SetShrinkPenalties(BSize shrink);
void SetGrowPenalties(BSize grow);
float LeftInset() const;
float TopInset() const;
float RightInset() const;
float BottomInset() const;
void SetLeftInset(float left);
void SetTopInset(float top);
void SetRightInset(float right);
void SetBottomInset(float bottom);
operator BString() const;
void GetString(BString& string) const;
Constraint* SetWidthAs(Area* area, float factor = 1.0f);
Constraint* SetHeightAs(Area* area, float factor = 1.0f);
void InvalidateSizeConstraints();
private:
Area(BLayoutItem* item);
void _Init(LinearSpec* ls, XTab* left, YTab* top,
XTab* right, YTab* bottom);
void _Init(LinearSpec* ls, Row* row, Column* column);
void _DoLayout();
void _UpdateMinSizeConstraint(BSize min);
void _UpdateMaxSizeConstraint(BSize max);
void _UpdatePreferredConstraint(BSize preferred);
private:
BLayoutItem* fLayoutItem;
LinearSpec* fLS;
XTab* fLeft;
XTab* fRight;
YTab* fTop;
YTab* fBottom;
Row* fRow;
Column* fColumn;
BSize fShrinkPenalties;
BSize fGrowPenalties;
BSize fTopLeftInset;
BSize fRightBottomInset;
BList fConstraints;
Constraint* fMinContentWidth;
Constraint* fMaxContentWidth;
Constraint* fMinContentHeight;
Constraint* fMaxContentHeight;
Constraint* fPreferredContentWidth;
Constraint* fPreferredContentHeight;
double fContentAspectRatio;
Constraint* fContentAspectRatioC;
public:
friend class BALMLayout;
};
} // namespace BALM
using BALM::Area;
using BALM::GroupItem;
#endif // AREA_H