0cc8c71bba
It works analoguous to BView::RemoveSelf(), i.e. it removes itself from the parent (layout in this case) and returns whether or not it had and was successfully removed from said parent.
104 lines
2.6 KiB
C++
104 lines
2.6 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 _LAYOUT_ITEM_H
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#define _LAYOUT_ITEM_H
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#include <Alignment.h>
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#include <Archivable.h>
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#include <Rect.h>
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#include <Size.h>
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class BLayout;
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class BView;
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class BLayoutItem : public BArchivable {
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public:
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BLayoutItem();
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BLayoutItem(BMessage* from);
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virtual ~BLayoutItem();
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BLayout* Layout() const;
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bool RemoveSelf();
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virtual BSize MinSize() = 0;
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virtual BSize MaxSize() = 0;
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virtual BSize PreferredSize() = 0;
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virtual BAlignment Alignment() = 0;
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virtual void SetExplicitMinSize(BSize size) = 0;
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virtual void SetExplicitMaxSize(BSize size) = 0;
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virtual void SetExplicitPreferredSize(BSize size) = 0;
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void SetExplicitSize(BSize size);
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virtual void SetExplicitAlignment(BAlignment alignment) = 0;
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virtual bool IsVisible() = 0;
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virtual void SetVisible(bool visible) = 0;
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virtual BRect Frame() = 0;
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virtual void SetFrame(BRect frame) = 0;
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virtual bool HasHeightForWidth();
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virtual void GetHeightForWidth(float width, float* min,
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float* max, float* preferred);
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virtual BView* View();
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virtual void InvalidateLayout(bool children = false);
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virtual void Relayout(bool immediate = false);
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void* LayoutData() const;
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void SetLayoutData(void* data);
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void AlignInFrame(BRect frame);
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virtual status_t Archive(BMessage* into, bool deep = true) const;
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virtual status_t Perform(perform_code d, void* arg);
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protected:
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// archiving methods
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virtual status_t AllArchived(BMessage* into) const;
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virtual status_t AllUnarchived(const BMessage* from);
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// hook methods
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virtual void LayoutInvalidated(bool children);
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virtual void AttachedToLayout();
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virtual void DetachedFromLayout(BLayout* layout);
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virtual void AncestorVisibilityChanged(bool shown);
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private:
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void SetLayout(BLayout* layout);
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virtual void _ReservedLayoutItem1();
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virtual void _ReservedLayoutItem2();
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virtual void _ReservedLayoutItem3();
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virtual void _ReservedLayoutItem4();
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virtual void _ReservedLayoutItem5();
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virtual void _ReservedLayoutItem6();
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virtual void _ReservedLayoutItem7();
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virtual void _ReservedLayoutItem8();
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virtual void _ReservedLayoutItem9();
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virtual void _ReservedLayoutItem10();
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// forbidden methods
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BLayoutItem(const BLayoutItem&);
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void operator =(const BLayoutItem&);
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friend class BLayout;
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BLayout* fLayout;
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void* fLayoutData;
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uint32 _reserved[5];
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};
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#endif // _LAYOUT_ITEM_H
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