2010-07-17 04:20:19 +04:00
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/*
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* Copyright 2006, 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 _GROUP_LAYOUT_H
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#define _GROUP_LAYOUT_H
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#include <TwoDimensionalLayout.h>
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class BGroupLayout : public BTwoDimensionalLayout {
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public:
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BGroupLayout(enum orientation orientation,
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float spacing = 0.0f);
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virtual ~BGroupLayout();
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float Spacing() const;
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void SetSpacing(float spacing);
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orientation Orientation() const;
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void SetOrientation(enum orientation orientation);
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float ItemWeight(int32 index) const;
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void SetItemWeight(int32 index, float weight);
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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 BLayoutItem* AddView(BView* child, float weight);
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virtual BLayoutItem* AddView(int32 index, BView* child,
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float weight);
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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 bool AddItem(BLayoutItem* item, float weight);
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virtual bool AddItem(int32 index, BLayoutItem* item,
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float weight);
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protected:
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virtual void ItemAdded(BLayoutItem* item);
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virtual void ItemRemoved(BLayoutItem* item);
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virtual void PrepareItems(enum orientation orientation);
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virtual int32 InternalCountColumns();
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virtual int32 InternalCountRows();
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virtual void GetColumnRowConstraints(
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enum orientation orientation,
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int32 index,
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ColumnRowConstraints* constraints);
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virtual void GetItemDimensions(BLayoutItem* item,
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Dimensions* dimensions);
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private:
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struct ItemLayoutData;
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ItemLayoutData* _LayoutDataForItem(BLayoutItem* item) const;
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orientation fOrientation;
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BList fVisibleItems;
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};
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#endif // _GROUP_LAYOUT_H
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