headers/os/interface/AbstractLayoutItem.h

   1 /*
   2  * Copyright 2006, Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _ABSTRACT_LAYOUT_ITEM_H
   6 #define _ABSTRACT_LAYOUT_ITEM_H
   7
   8 #include <Alignment.h>
   9 #include <LayoutItem.h>
  10 #include <Size.h>
  11
  12
  13 class BAbstractLayoutItem : public BLayoutItem {
  14 public:
  15                                                                 BAbstractLayoutItem();
  16                                                                 BAbstractLayoutItem(BMessage* from);
  17         virtual                                         ~BAbstractLayoutItem();
  18
  19         virtual BSize                           MinSize();
  20         virtual BSize                           MaxSize();
  21         virtual BSize                           PreferredSize();
  22         virtual BAlignment                      Alignment();
  23
  24         virtual void                            SetExplicitMinSize(BSize size);
  25         virtual void                            SetExplicitMaxSize(BSize size);
  26         virtual void                            SetExplicitPreferredSize(BSize size);
  27         virtual void                            SetExplicitAlignment(BAlignment alignment);
  28
  29         virtual BSize                           BaseMinSize();
  30         virtual BSize                           BaseMaxSize();
  31         virtual BSize                           BasePreferredSize();
  32         virtual BAlignment                      BaseAlignment();
  33
  34         virtual status_t                        Archive(BMessage* into, bool deep = true) const;
  35
  36         virtual status_t                        Perform(perform_code d, void* arg);
  37
  38 protected:
  39         // various hook methods
  40
  41         virtual status_t                        AllUnarchived(const BMessage* archive);
  42         virtual status_t                        AllArchived(BMessage* archive) const;
  43
  44         virtual void                            LayoutInvalidated(bool children);
  45
  46         virtual void                            AttachedToLayout();
  47         virtual void                            DetachedFromLayout(BLayout* layout);
  48
  49         virtual void                            AncestorVisibilityChanged(bool shown);
  50
  51 private:
  52         virtual void                            _ReservedAbstractLayoutItem1();
  53         virtual void                            _ReservedAbstractLayoutItem2();
  54         virtual void                            _ReservedAbstractLayoutItem3();
  55         virtual void                            _ReservedAbstractLayoutItem4();
  56         virtual void                            _ReservedAbstractLayoutItem5();
  57         virtual void                            _ReservedAbstractLayoutItem6();
  58         virtual void                            _ReservedAbstractLayoutItem7();
  59         virtual void                            _ReservedAbstractLayoutItem8();
  60         virtual void                            _ReservedAbstractLayoutItem9();
  61         virtual void                            _ReservedAbstractLayoutItem10();
  62
  63         // forbidden methods
  64                                                                 BAbstractLayoutItem(const BAbstractLayoutItem&);
  65                         void                            operator =(const BAbstractLayoutItem&);
  66
  67                         BSize                           fMinSize;
  68                         BSize                           fMaxSize;
  69                         BSize                           fPreferredSize;
  70                         BAlignment                      fAlignment;
  71
  72                         uint32                          _reserved[5];
  73 };
  74
  75 #endif  //      _ABSTRACT_LAYOUT_ITEM_H