1d6c7b6cb6
a few highlights: * BLayout now derives publicly from BLayoutItem * Added BAbstractLayout class, which our layouts now derive from * updated layout builders to avoid creating views when they don't need to * updated layout classes * updated AboutSystem to fix a little regression * more details on #6407 * please tell me about any regressions, I've tried to find them all, but some may have slipped by. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38207 a95241bf-73f2-0310-859d-f6bbb57e9c96
80 lines
1.8 KiB
C++
80 lines
1.8 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 _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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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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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 AllArchived(BMessage* into) const;
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virtual status_t AllUnarchived(const BMessage* from);
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protected:
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void SetLayout(BLayout* layout);
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// hook methods
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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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friend class BLayout;
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BLayout* fLayout;
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void* fLayoutData;
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};
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#endif // _LAYOUT_ITEM_H
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