172 lines
4.8 KiB
C++
172 lines
4.8 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 ALM_LAYOUT_H
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#define ALM_LAYOUT_H
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#include <AbstractLayout.h>
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#include <File.h>
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#include <List.h>
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#include <Size.h>
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#include <SupportDefs.h>
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#include <View.h>
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#include "Area.h"
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#include "Column.h"
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#include "LinearSpec.h"
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#include "Row.h"
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#include "Tab.h"
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namespace BALM {
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class RowColumnManager;
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/*!
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* A GUI layout engine using the Auckland Layout Model (ALM).
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*/
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class BALMLayout : public BAbstractLayout {
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public:
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BALMLayout(float spacing = 0.0f,
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BALMLayout* friendLayout = NULL);
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virtual ~BALMLayout();
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XTab* AddXTab();
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YTab* AddYTab();
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int32 CountXTabs() const;
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int32 CountYTabs() const;
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XTab* XTabAt(int32 index) const;
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YTab* YTabAt(int32 index) const;
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Row* AddRow(YTab* top, YTab* bottom);
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Column* AddColumn(XTab* left, XTab* right);
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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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char* PerformancePath() const;
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void SetPerformancePath(char* path);
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LinearSpec* Solver() const;
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void SetInset(float inset);
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float Inset() const;
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void SetSpacing(float spacing);
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float Spacing() const;
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Area* AreaFor(const BView* view) const;
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Area* AreaFor(const BLayoutItem* item) const;
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Area* AreaAt(int32 index) const;
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Area* CurrentArea() const;
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bool SetCurrentArea(const Area* area);
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bool SetCurrentArea(const BView* view);
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bool SetCurrentArea(const BLayoutItem* item);
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XTab* LeftOf(const BView* view) const;
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XTab* LeftOf(const BLayoutItem* item) const;
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XTab* RightOf(const BView* view) const;
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XTab* RightOf(const BLayoutItem* item) const;
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YTab* TopOf(const BView* view) const;
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YTab* TopOf(const BLayoutItem* item) const;
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YTab* BottomOf(const BView* view) const;
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YTab* BottomOf(const BLayoutItem* item) const;
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void BuildLayout(GroupItem& item, XTab* left = NULL,
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YTab* top = NULL, XTab* right = NULL,
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YTab* bottom = NULL);
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virtual BLayoutItem* AddView(BView* child);
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virtual BLayoutItem* AddView(int32 index, BView* child);
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virtual Area* AddView(BView* view, XTab* left, YTab* top,
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XTab* right = NULL, YTab* bottom = NULL);
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virtual Area* AddView(BView* view, Row* row, Column* column);
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virtual Area* AddViewToRight(BView* view, XTab* right = NULL,
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YTab* top = NULL, YTab* bottom = NULL);
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virtual Area* AddViewToLeft(BView* view, XTab* left = NULL,
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YTab* top = NULL, YTab* bottom = NULL);
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virtual Area* AddViewToTop(BView* view, YTab* top = NULL,
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XTab* left = NULL, XTab* right = NULL);
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virtual Area* AddViewToBottom(BView* view,
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YTab* bottom = NULL, XTab* left = NULL,
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XTab* right = NULL);
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virtual bool AddItem(BLayoutItem* item);
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virtual bool AddItem(int32 index, BLayoutItem* item);
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virtual Area* AddItem(BLayoutItem* item, XTab* left,
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YTab* top, XTab* right = NULL,
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YTab* bottom = NULL);
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virtual Area* AddItem(BLayoutItem* item, Row* row,
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Column* column);
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virtual Area* AddItemToRight(BLayoutItem* item,
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XTab* right = NULL, YTab* top = NULL,
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YTab* bottom = NULL);
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virtual Area* AddItemToLeft(BLayoutItem* item,
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XTab* left = NULL, YTab* top = NULL,
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YTab* bottom = NULL);
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virtual Area* AddItemToTop(BLayoutItem* item,
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YTab* top = NULL, XTab* left = NULL,
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XTab* right = NULL);
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virtual Area* AddItemToBottom(BLayoutItem* item,
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YTab* bottom = NULL, XTab* left = NULL,
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XTab* right = NULL);
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virtual BSize BaseMinSize();
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virtual BSize BaseMaxSize();
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virtual BSize BasePreferredSize();
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virtual BAlignment BaseAlignment();
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virtual void InvalidateLayout(bool children = false);
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virtual bool ItemAdded(BLayoutItem* item, int32 atIndex);
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virtual void ItemRemoved(BLayoutItem* item, int32 fromIndex);
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virtual void DerivedLayoutItems();
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private:
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/*! Add a view without initialize the Area. */
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BLayoutItem* _CreateLayoutItem(BView* view);
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void _UpdateAreaConstraints();
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BSize _CalculateMinSize();
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BSize _CalculateMaxSize();
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BSize _CalculatePreferredSize();
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void _ParseGroupItem(GroupItem& item, XTab* left,
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YTab* top, XTab* right, YTab* bottom);
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LinearSpec* fSolver;
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LinearSpec fOwnSolver;
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XTab* fLeft;
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XTab* fRight;
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YTab* fTop;
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YTab* fBottom;
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BSize fMinSize;
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BSize fMaxSize;
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BSize fPreferredSize;
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char* fPerformancePath;
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float fInset;
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float fSpacing;
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Area* fCurrentArea;
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XTabList fXTabList;
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YTabList fYTabList;
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RowColumnManager* fRowColumnManager;
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};
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} // namespace BALM
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using BALM::BALMLayout;
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#endif // ALM_LAYOUT_H
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