haiku/headers/libs/alm/Area.h
Clemens Zeidler ef93b55df4 - Areas with same tabs are put in a column/row automtically. Move preferred size constraint from Area to the column/row. This avoids a "spring" effect of the
quadratic solver if multiple Areas are in the same column/row.
- Replace GetString by ToString.
- some clean up



git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40941 a95241bf-73f2-0310-859d-f6bbb57e9c96
2011-03-14 00:24:12 +00:00

163 lines
3.4 KiB
C++

/*
* 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;
};
class RowColumnManager;
/**
* Rectangular area in the GUI, defined by a tab on each side.
*/
class Area {
public:
~Area();
BLayoutItem* Item();
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;
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);
BString ToString() const;
Constraint* SetWidthAs(Area* area, float factor = 1.0f);
Constraint* SetHeightAs(Area* area, float factor = 1.0f);
void InvalidateSizeConstraints();
BRect Frame();
BRect ItemFrame();
private:
Area(BLayoutItem* item);
void _Init(LinearSpec* ls, XTab* left, YTab* top,
XTab* right, YTab* bottom,
RowColumnManager* manager);
void _Init(LinearSpec* ls, Row* row, Column* column,
RowColumnManager* manager);
void _DoLayout();
void _UpdateMinSizeConstraint(BSize min);
void _UpdateMaxSizeConstraint(BSize max);
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;
BObjectList<Constraint> fConstraints;
Constraint* fMinContentWidth;
Constraint* fMaxContentWidth;
Constraint* fMinContentHeight;
Constraint* fMaxContentHeight;
double fContentAspectRatio;
Constraint* fContentAspectRatioC;
RowColumnManager* fRowColumnManager;
public:
friend class BALMLayout;
friend class RowColumnManager;
};
} // namespace BALM
using BALM::Area;
using BALM::GroupItem;
#endif // AREA_H