include/wx/sizer.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/sizer.h
   3 // Purpose:     provide wxSizer class for layout
   4 // Author:      Robert Roebling and Robin Dunn
   5 // Modified by: Ron Lee, Vadim Zeitlin (wxSizerFlags)
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robin Dunn, Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef __WXSIZER_H__
  13 #define __WXSIZER_H__
  14
  15 #include "wx/defs.h"
  16
  17 #include "wx/window.h"
  18
  19 //---------------------------------------------------------------------------
  20 // classes
  21 //---------------------------------------------------------------------------
  22
  23 class WXDLLIMPEXP_FWD_CORE wxButton;
  24 class WXDLLIMPEXP_FWD_CORE wxBoxSizer;
  25 class WXDLLIMPEXP_FWD_CORE wxSizerItem;
  26 class WXDLLIMPEXP_FWD_CORE wxSizer;
  27
  28 #ifndef wxUSE_BORDER_BY_DEFAULT
  29     #ifdef __SMARTPHONE__
  30         // no borders by default on limited size screen
  31         #define wxUSE_BORDER_BY_DEFAULT 0
  32     #else
  33         #define wxUSE_BORDER_BY_DEFAULT 1
  34     #endif
  35 #endif
  36
  37 // ----------------------------------------------------------------------------
  38 // wxSizerFlags: flags used for an item in the sizer
  39 // ----------------------------------------------------------------------------
  40
  41 class WXDLLEXPORT wxSizerFlags
  42 {
  43 public:
  44     // construct the flags object initialized with the given proportion (0 by
  45     // default)
  46     wxSizerFlags(int proportion = 0) : m_proportion(proportion)
  47     {
  48         m_flags = 0;
  49         m_borderInPixels = 0;
  50     }
  51
  52     // setters for all sizer flags, they all return the object itself so that
  53     // calls to them can be chained
  54
  55     wxSizerFlags& Proportion(int proportion)
  56     {
  57         m_proportion = proportion;
  58         return *this;
  59     }
  60
  61     wxSizerFlags& Align(int alignment) // combination of wxAlignment values
  62     {
  63         m_flags &= ~wxALIGN_MASK;
  64         m_flags |= alignment;
  65
  66         return *this;
  67     }
  68
  69     wxSizerFlags& Expand()
  70     {
  71         m_flags |= wxEXPAND;
  72         return *this;
  73     }
  74
  75     // some shortcuts for Align()
  76     wxSizerFlags& Centre() { return Align(wxALIGN_CENTRE); }
  77     wxSizerFlags& Center() { return Centre(); }
  78     wxSizerFlags& Top() { return Align(wxALIGN_TOP); }
  79     wxSizerFlags& Left() { return Align(wxALIGN_LEFT); }
  80     wxSizerFlags& Right() { return Align(wxALIGN_RIGHT); }
  81     wxSizerFlags& Bottom() { return Align(wxALIGN_BOTTOM); }
  82
  83     // default border size used by Border() below
  84     static int GetDefaultBorder()
  85     {
  86 #if wxUSE_BORDER_BY_DEFAULT
  87     #ifdef __WXGTK20__
  88         // GNOME HIG says to use 6px as the base unit:
  89         // http://library.gnome.org/devel/hig-book/stable/design-window.html.en
  90         return 6;
  91     #else
  92         // FIXME: default border size shouldn't be hardcoded and at the very
  93         //        least they should depend on the current font size
  94         return 5;
  95     #endif
  96 #else
  97         return 0;
  98 #endif
  99     }
 100
 101
 102     wxSizerFlags& Border(int direction, int borderInPixels)
 103     {
 104         m_flags &= ~wxALL;
 105         m_flags |= direction;
 106
 107         m_borderInPixels = borderInPixels;
 108
 109         return *this;
 110     }
 111
 112     wxSizerFlags& Border(int direction = wxALL)
 113     {
 114 #if wxUSE_BORDER_BY_DEFAULT
 115         return Border(direction, GetDefaultBorder());
 116 #else
 117         // no borders by default on limited size screen
 118         wxUnusedVar(direction);
 119
 120         return *this;
 121 #endif
 122     }
 123
 124     wxSizerFlags& DoubleBorder(int direction = wxALL)
 125     {
 126 #if wxUSE_BORDER_BY_DEFAULT
 127         return Border(direction, 2*GetDefaultBorder());
 128 #else
 129         wxUnusedVar(direction);
 130
 131         return *this;
 132 #endif
 133     }
 134
 135     wxSizerFlags& TripleBorder(int direction = wxALL)
 136     {
 137 #if wxUSE_BORDER_BY_DEFAULT
 138         return Border(direction, 3*GetDefaultBorder());
 139 #else
 140         wxUnusedVar(direction);
 141
 142         return *this;
 143 #endif
 144     }
 145
 146     wxSizerFlags& HorzBorder()
 147     {
 148 #if wxUSE_BORDER_BY_DEFAULT
 149         return Border(wxLEFT | wxRIGHT, GetDefaultBorder());
 150 #else
 151         return *this;
 152 #endif
 153     }
 154
 155     wxSizerFlags& DoubleHorzBorder()
 156     {
 157 #if wxUSE_BORDER_BY_DEFAULT
 158         return Border(wxLEFT | wxRIGHT, 2*GetDefaultBorder());
 159 #else
 160         return *this;
 161 #endif
 162     }
 163
 164     // setters for the others flags
 165     wxSizerFlags& Shaped()
 166     {
 167         m_flags |= wxSHAPED;
 168
 169         return *this;
 170     }
 171
 172     wxSizerFlags& FixedMinSize()
 173     {
 174         m_flags |= wxFIXED_MINSIZE;
 175
 176         return *this;
 177     }
 178
 179     // makes the item ignore window's visibility status
 180     wxSizerFlags& ReserveSpaceEvenIfHidden()
 181     {
 182         m_flags |= wxRESERVE_SPACE_EVEN_IF_HIDDEN;
 183         return *this;
 184     }
 185
 186     // accessors for wxSizer only
 187     int GetProportion() const { return m_proportion; }
 188     int GetFlags() const { return m_flags; }
 189     int GetBorderInPixels() const { return m_borderInPixels; }
 190
 191 private:
 192     int m_proportion;
 193     int m_flags;
 194     int m_borderInPixels;
 195 };
 196
 197
 198 // ----------------------------------------------------------------------------
 199 // wxSizerSpacer: used by wxSizerItem to represent a spacer
 200 // ----------------------------------------------------------------------------
 201
 202 class WXDLLEXPORT wxSizerSpacer
 203 {
 204 public:
 205     wxSizerSpacer(const wxSize& size) : m_size(size), m_isShown(true) { }
 206
 207     void SetSize(const wxSize& size) { m_size = size; }
 208     const wxSize& GetSize() const { return m_size; }
 209
 210     void Show(bool show) { m_isShown = show; }
 211     bool IsShown() const { return m_isShown; }
 212
 213 private:
 214     // the size, in pixel
 215     wxSize m_size;
 216
 217     // is the spacer currently shown?
 218     bool m_isShown;
 219 };
 220
 221 // ----------------------------------------------------------------------------
 222 // wxSizerItem
 223 // ----------------------------------------------------------------------------
 224
 225 class WXDLLEXPORT wxSizerItem : public wxObject
 226 {
 227 public:
 228     // window
 229     wxSizerItem( wxWindow *window,
 230                  int proportion,
 231                  int flag,
 232                  int border,
 233                  wxObject* userData );
 234
 235     // window with flags
 236     wxSizerItem(wxWindow *window, const wxSizerFlags& flags)
 237     {
 238         Init(flags);
 239
 240         DoSetWindow(window);
 241     }
 242
 243     // subsizer
 244     wxSizerItem( wxSizer *sizer,
 245                  int proportion,
 246                  int flag,
 247                  int border,
 248                  wxObject* userData );
 249
 250     // sizer with flags
 251     wxSizerItem(wxSizer *sizer, const wxSizerFlags& flags)
 252     {
 253         Init(flags);
 254
 255         DoSetSizer(sizer);
 256     }
 257
 258     // spacer
 259     wxSizerItem( int width,
 260                  int height,
 261                  int proportion,
 262                  int flag,
 263                  int border,
 264                  wxObject* userData);
 265
 266     // spacer with flags
 267     wxSizerItem(int width, int height, const wxSizerFlags& flags)
 268     {
 269         Init(flags);
 270
 271         DoSetSpacer(wxSize(width, height));
 272     }
 273
 274     wxSizerItem();
 275     virtual ~wxSizerItem();
 276
 277     virtual void DeleteWindows();
 278
 279     // Enable deleting the SizerItem without destroying the contained sizer.
 280     void DetachSizer() { m_sizer = NULL; }
 281
 282     virtual wxSize GetSize() const;
 283     virtual wxSize CalcMin();
 284     virtual void SetDimension( const wxPoint& pos, const wxSize& size );
 285
 286     wxSize GetMinSize() const
 287         { return m_minSize; }
 288     wxSize GetMinSizeWithBorder() const;
 289
 290     void SetMinSize(const wxSize& size)
 291     {
 292         if ( IsWindow() )
 293             m_window->SetMinSize(size);
 294         m_minSize = size;
 295     }
 296     void SetMinSize( int x, int y )
 297         { SetMinSize(wxSize(x, y)); }
 298     void SetInitSize( int x, int y )
 299         { SetMinSize(wxSize(x, y)); }
 300
 301     // if either of dimensions is zero, ratio is assumed to be 1
 302     // to avoid "divide by zero" errors
 303     void SetRatio(int width, int height)
 304         { m_ratio = (width && height) ? ((float) width / (float) height) : 1; }
 305     void SetRatio(const wxSize& size)
 306         { SetRatio(size.x, size.y); }
 307     void SetRatio(float ratio)
 308         { m_ratio = ratio; }
 309     float GetRatio() const
 310         { return m_ratio; }
 311
 312     virtual wxRect GetRect() { return m_rect; }
 313
 314     // set a sizer item id (different from a window id, all sizer items,
 315     // including spacers, can have an associated id)
 316     void SetId(int id) { m_id = id; }
 317     int GetId() const { return m_id; }
 318
 319     bool IsWindow() const { return m_kind == Item_Window; }
 320     bool IsSizer() const { return m_kind == Item_Sizer; }
 321     bool IsSpacer() const { return m_kind == Item_Spacer; }
 322
 323 #if WXWIN_COMPATIBILITY_2_6
 324     // Deprecated in 2.6, use {G,S}etProportion instead.
 325     wxDEPRECATED( void SetOption( int option ) );
 326     wxDEPRECATED( int GetOption() const );
 327 #endif // WXWIN_COMPATIBILITY_2_6
 328
 329     void SetProportion( int proportion )
 330         { m_proportion = proportion; }
 331     int GetProportion() const
 332         { return m_proportion; }
 333     void SetFlag( int flag )
 334         { m_flag = flag; }
 335     int GetFlag() const
 336         { return m_flag; }
 337     void SetBorder( int border )
 338         { m_border = border; }
 339     int GetBorder() const
 340         { return m_border; }
 341
 342     wxWindow *GetWindow() const
 343         { return m_kind == Item_Window ? m_window : NULL; }
 344     wxSizer *GetSizer() const
 345         { return m_kind == Item_Sizer ? m_sizer : NULL; }
 346     wxSize GetSpacer() const;
 347
 348     // This function behaves obviously for the windows and spacers but for the
 349     // sizers it returns true if any sizer element is shown and only returns
 350     // false if all of them are hidden. Also, it always returns true if
 351     // wxRESERVE_SPACE_EVEN_IF_HIDDEN flag was used.
 352     bool IsShown() const;
 353
 354     void Show(bool show);
 355
 356     void SetUserData(wxObject* userData)
 357         { delete m_userData; m_userData = userData; }
 358     wxObject* GetUserData() const
 359         { return m_userData; }
 360     wxPoint GetPosition() const
 361         { return m_pos; }
 362
 363     // Called once the first component of an item has been decided. This is
 364     // used in algorithms that depend on knowing the size in one direction
 365     // before the min size in the other direction can be known.
 366     // Returns true if it made use of the information (and min size was changed).
 367     bool InformFirstDirection( int direction, int size, int availableOtherDir=-1 );
 368
 369     // these functions delete the current contents of the item if it's a sizer
 370     // or a spacer but not if it is a window
 371     void AssignWindow(wxWindow *window)
 372     {
 373         Free();
 374         DoSetWindow(window);
 375     }
 376
 377     void AssignSizer(wxSizer *sizer)
 378     {
 379         Free();
 380         DoSetSizer(sizer);
 381     }
 382
 383     void AssignSpacer(const wxSize& size)
 384     {
 385         Free();
 386         DoSetSpacer(size);
 387     }
 388
 389     void AssignSpacer(int w, int h) { AssignSpacer(wxSize(w, h)); }
 390
 391 #if WXWIN_COMPATIBILITY_2_8
 392     // these functions do not free the old sizer/spacer and so can easily
 393     // provoke the memory leaks and so shouldn't be used, use Assign() instead
 394     wxDEPRECATED( void SetWindow(wxWindow *window) );
 395     wxDEPRECATED( void SetSizer(wxSizer *sizer) );
 396     wxDEPRECATED( void SetSpacer(const wxSize& size) );
 397     wxDEPRECATED( void SetSpacer(int width, int height) );
 398 #endif // WXWIN_COMPATIBILITY_2_8
 399
 400 protected:
 401     // common part of several ctors
 402     void Init() { m_userData = NULL; m_kind = Item_None; }
 403
 404     // common part of ctors taking wxSizerFlags
 405     void Init(const wxSizerFlags& flags);
 406
 407     // free current contents
 408     void Free();
 409
 410     // common parts of Set/AssignXXX()
 411     void DoSetWindow(wxWindow *window);
 412     void DoSetSizer(wxSizer *sizer);
 413     void DoSetSpacer(const wxSize& size);
 414
 415     // discriminated union: depending on m_kind one of the fields is valid
 416     enum
 417     {
 418         Item_None,
 419         Item_Window,
 420         Item_Sizer,
 421         Item_Spacer,
 422         Item_Max
 423     } m_kind;
 424     union
 425     {
 426         wxWindow      *m_window;
 427         wxSizer       *m_sizer;
 428         wxSizerSpacer *m_spacer;
 429     };
 430
 431     wxPoint      m_pos;
 432     wxSize       m_minSize;
 433     int          m_proportion;
 434     int          m_border;
 435     int          m_flag;
 436     int          m_id;
 437
 438     // on screen rectangle of this item (not including borders)
 439     wxRect       m_rect;
 440
 441     // Aspect ratio can always be calculated from m_size,
 442     // but this would cause precision loss when the window
 443     // is shrunk.  It is safer to preserve the initial value.
 444     float        m_ratio;
 445
 446     wxObject    *m_userData;
 447
 448 private:
 449     DECLARE_CLASS(wxSizerItem)
 450     DECLARE_NO_COPY_CLASS(wxSizerItem)
 451 };
 452
 453 WX_DECLARE_EXPORTED_LIST( wxSizerItem, wxSizerItemList );
 454
 455
 456 //---------------------------------------------------------------------------
 457 // wxSizer
 458 //---------------------------------------------------------------------------
 459
 460 class WXDLLEXPORT wxSizer: public wxObject, public wxClientDataContainer
 461 {
 462 public:
 463     wxSizer() { m_containingWindow = NULL; }
 464     virtual ~wxSizer();
 465
 466     // methods for adding elements to the sizer: there are Add/Insert/Prepend
 467     // overloads for each of window/sizer/spacer/wxSizerItem
 468     wxSizerItem* Add(wxWindow *window,
 469                      int proportion = 0,
 470                      int flag = 0,
 471                      int border = 0,
 472                      wxObject* userData = NULL);
 473     wxSizerItem* Add(wxSizer *sizer,
 474                      int proportion = 0,
 475                      int flag = 0,
 476                      int border = 0,
 477                      wxObject* userData = NULL);
 478     wxSizerItem* Add(int width,
 479                      int height,
 480                      int proportion = 0,
 481                      int flag = 0,
 482                      int border = 0,
 483                      wxObject* userData = NULL);
 484     wxSizerItem* Add( wxWindow *window, const wxSizerFlags& flags);
 485     wxSizerItem* Add( wxSizer *sizer, const wxSizerFlags& flags);
 486     wxSizerItem* Add( int width, int height, const wxSizerFlags& flags);
 487     wxSizerItem* Add( wxSizerItem *item);
 488
 489     wxSizerItem* AddSpacer(int size);
 490     wxSizerItem* AddStretchSpacer(int prop = 1);
 491
 492     wxSizerItem* Insert(size_t index,
 493                         wxWindow *window,
 494                         int proportion = 0,
 495                         int flag = 0,
 496                         int border = 0,
 497                         wxObject* userData = NULL);
 498     wxSizerItem* Insert(size_t index,
 499                         wxSizer *sizer,
 500                         int proportion = 0,
 501                         int flag = 0,
 502                         int border = 0,
 503                         wxObject* userData = NULL);
 504     wxSizerItem* Insert(size_t index,
 505                         int width,
 506                         int height,
 507                         int proportion = 0,
 508                         int flag = 0,
 509                         int border = 0,
 510                         wxObject* userData = NULL);
 511     wxSizerItem* Insert(size_t index,
 512                         wxWindow *window,
 513                         const wxSizerFlags& flags);
 514     wxSizerItem* Insert(size_t index,
 515                         wxSizer *sizer,
 516                         const wxSizerFlags& flags);
 517     wxSizerItem* Insert(size_t index,
 518                         int width,
 519                         int height,
 520                         const wxSizerFlags& flags);
 521     virtual wxSizerItem* Insert( size_t index, wxSizerItem *item);
 522
 523     wxSizerItem* InsertSpacer(size_t index, int size);
 524     wxSizerItem* InsertStretchSpacer(size_t index, int prop = 1);
 525
 526     wxSizerItem* Prepend(wxWindow *window,
 527                          int proportion = 0,
 528                          int flag = 0,
 529                          int border = 0,
 530                          wxObject* userData = NULL);
 531     wxSizerItem* Prepend(wxSizer *sizer,
 532                          int proportion = 0,
 533                          int flag = 0,
 534                          int border = 0,
 535                          wxObject* userData = NULL);
 536     wxSizerItem* Prepend(int width,
 537                          int height,
 538                          int proportion = 0,
 539                          int flag = 0,
 540                          int border = 0,
 541                          wxObject* userData = NULL);
 542     wxSizerItem* Prepend(wxWindow *window, const wxSizerFlags& flags);
 543     wxSizerItem* Prepend(wxSizer *sizer, const wxSizerFlags& flags);
 544     wxSizerItem* Prepend(int width, int height, const wxSizerFlags& flags);
 545     wxSizerItem* Prepend(wxSizerItem *item);
 546
 547     wxSizerItem* PrependSpacer(int size);
 548     wxSizerItem* PrependStretchSpacer(int prop = 1);
 549
 550     // set (or possibly unset if window is NULL) or get the window this sizer
 551     // is used in
 552     void SetContainingWindow(wxWindow *window);
 553     wxWindow *GetContainingWindow() const { return m_containingWindow; }
 554
 555 #if WXWIN_COMPATIBILITY_2_6
 556     // Deprecated in 2.6 since historically it does not delete the window,
 557     // use Detach instead.
 558     wxDEPRECATED( virtual bool Remove( wxWindow *window ) );
 559 #endif // WXWIN_COMPATIBILITY_2_6
 560
 561     virtual bool Remove( wxSizer *sizer );
 562     virtual bool Remove( int index );
 563
 564     virtual bool Detach( wxWindow *window );
 565     virtual bool Detach( wxSizer *sizer );
 566     virtual bool Detach( int index );
 567
 568     virtual bool Replace( wxWindow *oldwin, wxWindow *newwin, bool recursive = false );
 569     virtual bool Replace( wxSizer *oldsz, wxSizer *newsz, bool recursive = false );
 570     virtual bool Replace( size_t index, wxSizerItem *newitem );
 571
 572     virtual void Clear( bool delete_windows = false );
 573     virtual void DeleteWindows();
 574
 575     // Inform sizer about the first direction that has been decided (by parent item)
 576     // Returns true if it made use of the informtion (and recalculated min size)
 577     virtual bool InformFirstDirection( int WXUNUSED(direction), int WXUNUSED(size), int WXUNUSED(availableOtherDir) )
 578         { return false; }
 579
 580     void SetMinSize( int width, int height )
 581         { DoSetMinSize( width, height ); }
 582     void SetMinSize( const wxSize& size )
 583         { DoSetMinSize( size.x, size.y ); }
 584
 585     // Searches recursively
 586     bool SetItemMinSize( wxWindow *window, int width, int height )
 587         { return DoSetItemMinSize( window, width, height ); }
 588     bool SetItemMinSize( wxWindow *window, const wxSize& size )
 589         { return DoSetItemMinSize( window, size.x, size.y ); }
 590
 591     // Searches recursively
 592     bool SetItemMinSize( wxSizer *sizer, int width, int height )
 593         { return DoSetItemMinSize( sizer, width, height ); }
 594     bool SetItemMinSize( wxSizer *sizer, const wxSize& size )
 595         { return DoSetItemMinSize( sizer, size.x, size.y ); }
 596
 597     bool SetItemMinSize( size_t index, int width, int height )
 598         { return DoSetItemMinSize( index, width, height ); }
 599     bool SetItemMinSize( size_t index, const wxSize& size )
 600         { return DoSetItemMinSize( index, size.x, size.y ); }
 601
 602     wxSize GetSize() const
 603         { return m_size; }
 604     wxPoint GetPosition() const
 605         { return m_position; }
 606
 607     // Calculate the minimal size or return m_minSize if bigger.
 608     wxSize GetMinSize();
 609
 610     // These virtual functions are used by the layout algorithm: first
 611     // CalcMin() is called to calculate the minimal size of the sizer and
 612     // prepare for laying it out and then RecalcSizes() is called to really
 613     // update all the sizer items
 614     virtual wxSize CalcMin() = 0;
 615     virtual void RecalcSizes() = 0;
 616
 617     virtual void Layout();
 618
 619     wxSize ComputeFittingClientSize(wxWindow *window);
 620     wxSize ComputeFittingWindowSize(wxWindow *window);
 621
 622     wxSize Fit( wxWindow *window );
 623     void FitInside( wxWindow *window );
 624     void SetSizeHints( wxWindow *window );
 625 #if WXWIN_COMPATIBILITY_2_8
 626     // This only calls FitInside() since 2.9
 627     wxDEPRECATED( void SetVirtualSizeHints( wxWindow *window ) );
 628 #endif
 629
 630     wxSizerItemList& GetChildren()
 631         { return m_children; }
 632     const wxSizerItemList& GetChildren() const
 633         { return m_children; }
 634
 635     void SetDimension( int x, int y, int width, int height );
 636
 637     wxSizerItem* GetItem( wxWindow *window, bool recursive = false );
 638     wxSizerItem* GetItem( wxSizer *sizer, bool recursive = false );
 639     wxSizerItem* GetItem( size_t index );
 640     wxSizerItem* GetItemById( int id, bool recursive = false );
 641
 642     // Manage whether individual scene items are considered
 643     // in the layout calculations or not.
 644     bool Show( wxWindow *window, bool show = true, bool recursive = false );
 645     bool Show( wxSizer *sizer, bool show = true, bool recursive = false );
 646     bool Show( size_t index, bool show = true );
 647
 648     bool Hide( wxSizer *sizer, bool recursive = false )
 649         { return Show( sizer, false, recursive ); }
 650     bool Hide( wxWindow *window, bool recursive = false )
 651         { return Show( window, false, recursive ); }
 652     bool Hide( size_t index )
 653         { return Show( index, false ); }
 654
 655     bool IsShown( wxWindow *window ) const;
 656     bool IsShown( wxSizer *sizer ) const;
 657     bool IsShown( size_t index ) const;
 658
 659     // Recursively call wxWindow::Show () on all sizer items.
 660     virtual void ShowItems (bool show);
 661
 662     void Show(bool show) { ShowItems(show); }
 663
 664 protected:
 665     wxSize              m_size;
 666     wxSize              m_minSize;
 667     wxPoint             m_position;
 668     wxSizerItemList     m_children;
 669
 670     // the window this sizer is used in, can be NULL
 671     wxWindow *m_containingWindow;
 672
 673     wxSize GetMaxClientSize( wxWindow *window ) const;
 674     wxSize GetMinClientSize( wxWindow *window );
 675     wxSize VirtualFitSize( wxWindow *window );
 676
 677     virtual void DoSetMinSize( int width, int height );
 678     virtual bool DoSetItemMinSize( wxWindow *window, int width, int height );
 679     virtual bool DoSetItemMinSize( wxSizer *sizer, int width, int height );
 680     virtual bool DoSetItemMinSize( size_t index, int width, int height );
 681
 682 private:
 683     DECLARE_CLASS(wxSizer)
 684 };
 685
 686 //---------------------------------------------------------------------------
 687 // wxGridSizer
 688 //---------------------------------------------------------------------------
 689
 690 class WXDLLEXPORT wxGridSizer: public wxSizer
 691 {
 692 public:
 693     wxGridSizer( int rows, int cols, int vgap, int hgap );
 694     wxGridSizer( int cols, int vgap = 0, int hgap = 0 );
 695
 696     virtual void RecalcSizes();
 697     virtual wxSize CalcMin();
 698
 699     void SetCols( int cols )    { m_cols = cols; }
 700     void SetRows( int rows )    { m_rows = rows; }
 701     void SetVGap( int gap )     { m_vgap = gap; }
 702     void SetHGap( int gap )     { m_hgap = gap; }
 703     int GetCols() const         { return m_cols; }
 704     int GetRows() const         { return m_rows; }
 705     int GetVGap() const         { return m_vgap; }
 706     int GetHGap() const         { return m_hgap; }
 707
 708 protected:
 709     int    m_rows;
 710     int    m_cols;
 711     int    m_vgap;
 712     int    m_hgap;
 713
 714     // return the number of total items and the number of columns and rows
 715     int CalcRowsCols(int& rows, int& cols) const;
 716
 717     void SetItemBounds( wxSizerItem *item, int x, int y, int w, int h );
 718
 719 private:
 720     DECLARE_CLASS(wxGridSizer)
 721 };
 722
 723 //---------------------------------------------------------------------------
 724 // wxFlexGridSizer
 725 //---------------------------------------------------------------------------
 726
 727 // the bevaiour for resizing wxFlexGridSizer cells in the "non-flexible"
 728 // direction
 729 enum wxFlexSizerGrowMode
 730 {
 731     // don't resize the cells in non-flexible direction at all
 732     wxFLEX_GROWMODE_NONE,
 733
 734     // uniformly resize only the specified ones (default)
 735     wxFLEX_GROWMODE_SPECIFIED,
 736
 737     // uniformly resize all cells
 738     wxFLEX_GROWMODE_ALL
 739 };
 740
 741 class WXDLLEXPORT wxFlexGridSizer: public wxGridSizer
 742 {
 743 public:
 744     // ctors/dtor
 745     wxFlexGridSizer( int rows, int cols, int vgap, int hgap );
 746     wxFlexGridSizer( int cols, int vgap = 0, int hgap = 0 );
 747     virtual ~wxFlexGridSizer();
 748
 749
 750     // set the rows/columns which will grow (the others will remain of the
 751     // constant initial size)
 752     void AddGrowableRow( size_t idx, int proportion = 0 );
 753     void RemoveGrowableRow( size_t idx );
 754     void AddGrowableCol( size_t idx, int proportion = 0 );
 755     void RemoveGrowableCol( size_t idx );
 756
 757
 758     // the sizer cells may grow in both directions, not grow at all or only
 759     // grow in one direction but not the other
 760
 761     // the direction may be wxVERTICAL, wxHORIZONTAL or wxBOTH (default)
 762     void SetFlexibleDirection(int direction) { m_flexDirection = direction; }
 763     int GetFlexibleDirection() const { return m_flexDirection; }
 764
 765     // note that the grow mode only applies to the direction which is not
 766     // flexible
 767     void SetNonFlexibleGrowMode(wxFlexSizerGrowMode mode) { m_growMode = mode; }
 768     wxFlexSizerGrowMode GetNonFlexibleGrowMode() const { return m_growMode; }
 769
 770     // Read-only access to the row heights and col widths arrays
 771     const wxArrayInt& GetRowHeights() const { return m_rowHeights; }
 772     const wxArrayInt& GetColWidths() const  { return m_colWidths; }
 773
 774     // implementation
 775     virtual void RecalcSizes();
 776     virtual wxSize CalcMin();
 777
 778 protected:
 779     void AdjustForFlexDirection();
 780     void AdjustForGrowables(const wxSize& sz);
 781     void FindWidthsAndHeights(int nrows, int ncols);
 782
 783     // the heights/widths of all rows/columns
 784     wxArrayInt  m_rowHeights,
 785                 m_colWidths;
 786
 787     // indices of the growable columns and rows
 788     wxArrayInt  m_growableRows,
 789                 m_growableCols;
 790
 791     // proportion values of the corresponding growable rows and columns
 792     wxArrayInt  m_growableRowsProportions,
 793                 m_growableColsProportions;
 794
 795     // parameters describing whether the growable cells should be resized in
 796     // both directions or only one
 797     int m_flexDirection;
 798     wxFlexSizerGrowMode m_growMode;
 799
 800     // saves CalcMin result to optimize RecalcSizes
 801     wxSize m_calculatedMinSize;
 802
 803 private:
 804     DECLARE_CLASS(wxFlexGridSizer)
 805     DECLARE_NO_COPY_CLASS(wxFlexGridSizer)
 806 };
 807
 808 //---------------------------------------------------------------------------
 809 // wxBoxSizer
 810 //---------------------------------------------------------------------------
 811
 812 class WXDLLEXPORT wxBoxSizer: public wxSizer
 813 {
 814 public:
 815     wxBoxSizer(int orient)
 816     {
 817         m_orient = orient;
 818         m_totalProportion = 0;
 819
 820         wxASSERT_MSG( m_orient == wxHORIZONTAL || m_orient == wxVERTICAL,
 821                       _T("invalid value for wxBoxSizer orientation") );
 822     }
 823
 824     int GetOrientation() const { return m_orient; }
 825
 826     bool IsVertical() const { return m_orient == wxVERTICAL; }
 827
 828     void SetOrientation(int orient) { m_orient = orient; }
 829
 830     // implementation of our resizing logic
 831     virtual wxSize CalcMin();
 832     virtual void RecalcSizes();
 833
 834 protected:
 835     // helpers for our code: this returns the component of the given wxSize in
 836     // the direction of the sizer and in the other direction, respectively
 837     int GetSizeInMajorDir(const wxSize& sz) const
 838     {
 839         return m_orient == wxHORIZONTAL ? sz.x : sz.y;
 840     }
 841
 842     int& SizeInMajorDir(wxSize& sz)
 843     {
 844         return m_orient == wxHORIZONTAL ? sz.x : sz.y;
 845     }
 846
 847     int& PosInMajorDir(wxPoint& pt)
 848     {
 849         return m_orient == wxHORIZONTAL ? pt.x : pt.y;
 850     }
 851
 852     int GetSizeInMinorDir(const wxSize& sz) const
 853     {
 854         return m_orient == wxHORIZONTAL ? sz.y : sz.x;
 855     }
 856
 857     int& SizeInMinorDir(wxSize& sz)
 858     {
 859         return m_orient == wxHORIZONTAL ? sz.y : sz.x;
 860     }
 861
 862     int& PosInMinorDir(wxPoint& pt)
 863     {
 864         return m_orient == wxHORIZONTAL ? pt.y : pt.x;
 865     }
 866
 867     // another helper: creates wxSize from major and minor components
 868     wxSize SizeFromMajorMinor(int major, int minor) const
 869     {
 870         if ( m_orient == wxHORIZONTAL )
 871         {
 872             return wxSize(major, minor);
 873         }
 874         else // wxVERTICAL
 875         {
 876             return wxSize(minor, major);
 877         }
 878     }
 879
 880
 881     // either wxHORIZONTAL or wxVERTICAL
 882     int m_orient;
 883
 884     // the sum of proportion of all of our elements
 885     int m_totalProportion;
 886
 887     // the minimal size needed for this sizer as calculated by the last call to
 888     // our CalcMin()
 889     wxSize m_minSize;
 890
 891 private:
 892     DECLARE_CLASS(wxBoxSizer)
 893 };
 894
 895 //---------------------------------------------------------------------------
 896 // wxWrapSizer - A box sizer that can wrap items on several lines when
 897 // widths exceed available width.
 898 //---------------------------------------------------------------------------
 899
 900 // Borrow unused flag value
 901 #define wxEXTEND_LAST_ON_EACH_LINE      wxFULL_REPAINT_ON_RESIZE
 902
 903 class WXDLLEXPORT wxWrapSizer: public wxBoxSizer
 904 {
 905 public:
 906     wxWrapSizer( int orient=wxHORIZONTAL, int flags=wxEXTEND_LAST_ON_EACH_LINE );
 907     virtual ~wxWrapSizer();
 908
 909     virtual void RecalcSizes();
 910     virtual wxSize CalcMin();
 911
 912     virtual bool InformFirstDirection( int direction, int size, int availableOtherDir );
 913
 914 protected:
 915     int m_prim_size_last;    // Size in primary direction last time
 916     int m_n_line;            // Number of lines
 917     wxBoxSizer m_rows;       // Rows of items
 918     int m_flags;
 919
 920     void AdjustPropLastItem(wxSizer *psz, wxSizerItem *itemLast);
 921
 922     DECLARE_DYNAMIC_CLASS(wxWrapSizer)
 923 };
 924
 925 //---------------------------------------------------------------------------
 926 // wxStaticBoxSizer
 927 //---------------------------------------------------------------------------
 928
 929 #if wxUSE_STATBOX
 930
 931 class WXDLLIMPEXP_FWD_CORE wxStaticBox;
 932
 933 class WXDLLEXPORT wxStaticBoxSizer: public wxBoxSizer
 934 {
 935 public:
 936     wxStaticBoxSizer(wxStaticBox *box, int orient);
 937     wxStaticBoxSizer(int orient, wxWindow *win, const wxString& label = wxEmptyString);
 938     virtual ~wxStaticBoxSizer();
 939
 940     void RecalcSizes();
 941     wxSize CalcMin();
 942
 943     wxStaticBox *GetStaticBox() const
 944         { return m_staticBox; }
 945
 946     // override to hide/show the static box as well
 947     virtual void ShowItems (bool show);
 948
 949     virtual bool Detach( wxWindow *window );
 950     virtual bool Detach( wxSizer *sizer ) { return wxBoxSizer::Detach(sizer); }
 951     virtual bool Detach( int index ) { return wxBoxSizer::Detach(index); }
 952
 953 protected:
 954     wxStaticBox   *m_staticBox;
 955
 956 private:
 957     DECLARE_CLASS(wxStaticBoxSizer)
 958     DECLARE_NO_COPY_CLASS(wxStaticBoxSizer)
 959 };
 960
 961 #endif // wxUSE_STATBOX
 962
 963 #if wxUSE_BUTTON
 964
 965 class WXDLLEXPORT wxStdDialogButtonSizer: public wxBoxSizer
 966 {
 967 public:
 968     // Constructor just creates a new wxBoxSizer, not much else.
 969     // Box sizer orientation is automatically determined here:
 970     // vertical for PDAs, horizontal for everything else?
 971     wxStdDialogButtonSizer();
 972
 973     // Checks button ID against system IDs and sets one of the pointers below
 974     // to this button. Does not do any sizer-related things here.
 975     void AddButton(wxButton *button);
 976
 977     // Use these if no standard ID can/should be used
 978     void SetAffirmativeButton( wxButton *button );
 979     void SetNegativeButton( wxButton *button );
 980     void SetCancelButton( wxButton *button );
 981
 982     // All platform-specific code here, checks which buttons exist and add
 983     // them to the sizer accordingly.
 984     // Note - one potential hack on Mac we could use here,
 985     // if m_buttonAffirmative is wxID_SAVE then ensure wxID_SAVE
 986     // is set to _("Save") and m_buttonNegative is set to _("Don't Save")
 987     // I wouldn't add any other hacks like that into here,
 988     // but this one I can see being useful.
 989     void Realize();
 990
 991     wxButton *GetAffirmativeButton() const { return m_buttonAffirmative; }
 992     wxButton *GetApplyButton() const { return m_buttonApply; }
 993     wxButton *GetNegativeButton() const { return m_buttonNegative; }
 994     wxButton *GetCancelButton() const { return m_buttonCancel; }
 995     wxButton *GetHelpButton() const { return m_buttonHelp; }
 996
 997 protected:
 998     wxButton *m_buttonAffirmative;  // wxID_OK, wxID_YES, wxID_SAVE go here
 999     wxButton *m_buttonApply;        // wxID_APPLY
1000     wxButton *m_buttonNegative;     // wxID_NO
1001     wxButton *m_buttonCancel;       // wxID_CANCEL, wxID_CLOSE
1002     wxButton *m_buttonHelp;         // wxID_HELP, wxID_CONTEXT_HELP
1003
1004 private:
1005     DECLARE_CLASS(wxStdDialogButtonSizer)
1006     DECLARE_NO_COPY_CLASS(wxStdDialogButtonSizer)
1007 };
1008
1009 #endif // wxUSE_BUTTON
1010
1011
1012 // ----------------------------------------------------------------------------
1013 // inline functions implementation
1014 // ----------------------------------------------------------------------------
1015
1016 #if WXWIN_COMPATIBILITY_2_8
1017
1018 inline void wxSizerItem::SetWindow(wxWindow *window)
1019 {
1020     DoSetWindow(window);
1021 }
1022
1023 inline void wxSizerItem::SetSizer(wxSizer *sizer)
1024 {
1025     DoSetSizer(sizer);
1026 }
1027
1028 inline void wxSizerItem::SetSpacer(const wxSize& size)
1029 {
1030     DoSetSpacer(size);
1031 }
1032
1033 inline void wxSizerItem::SetSpacer(int width, int height)
1034 {
1035     DoSetSpacer(wxSize(width, height));
1036 }
1037
1038 #endif // WXWIN_COMPATIBILITY_2_8
1039
1040
1041 inline wxSizerItem*
1042 wxSizer::Add( wxSizerItem *item )
1043 {
1044     return Insert( m_children.GetCount(), item );
1045 }
1046
1047 inline wxSizerItem*
1048 wxSizer::Add( wxWindow *window, int proportion, int flag, int border, wxObject* userData )
1049 {
1050     return Add( new wxSizerItem( window, proportion, flag, border, userData ) );
1051 }
1052
1053 inline wxSizerItem*
1054 wxSizer::Add( wxSizer *sizer, int proportion, int flag, int border, wxObject* userData )
1055 {
1056     return Add( new wxSizerItem( sizer, proportion, flag, border, userData ) );
1057 }
1058
1059 inline wxSizerItem*
1060 wxSizer::Add( int width, int height, int proportion, int flag, int border, wxObject* userData )
1061 {
1062     return Add( new wxSizerItem( width, height, proportion, flag, border, userData ) );
1063 }
1064
1065 inline wxSizerItem*
1066 wxSizer::Add( wxWindow *window, const wxSizerFlags& flags )
1067 {
1068     return Add( new wxSizerItem(window, flags) );
1069 }
1070
1071 inline wxSizerItem*
1072 wxSizer::Add( wxSizer *sizer, const wxSizerFlags& flags )
1073 {
1074     return Add( new wxSizerItem(sizer, flags) );
1075 }
1076
1077 inline wxSizerItem*
1078 wxSizer::Add( int width, int height, const wxSizerFlags& flags )
1079 {
1080     return Add( new wxSizerItem(width, height, flags) );
1081 }
1082
1083 inline wxSizerItem*
1084 wxSizer::AddSpacer(int size)
1085 {
1086     return Add(size, size);
1087 }
1088
1089 inline wxSizerItem*
1090 wxSizer::AddStretchSpacer(int prop)
1091 {
1092     return Add(0, 0, prop);
1093 }
1094
1095 inline wxSizerItem*
1096 wxSizer::Prepend( wxSizerItem *item )
1097 {
1098     return Insert( 0, item );
1099 }
1100
1101 inline wxSizerItem*
1102 wxSizer::Prepend( wxWindow *window, int proportion, int flag, int border, wxObject* userData )
1103 {
1104     return Prepend( new wxSizerItem( window, proportion, flag, border, userData ) );
1105 }
1106
1107 inline wxSizerItem*
1108 wxSizer::Prepend( wxSizer *sizer, int proportion, int flag, int border, wxObject* userData )
1109 {
1110     return Prepend( new wxSizerItem( sizer, proportion, flag, border, userData ) );
1111 }
1112
1113 inline wxSizerItem*
1114 wxSizer::Prepend( int width, int height, int proportion, int flag, int border, wxObject* userData )
1115 {
1116     return Prepend( new wxSizerItem( width, height, proportion, flag, border, userData ) );
1117 }
1118
1119 inline wxSizerItem*
1120 wxSizer::PrependSpacer(int size)
1121 {
1122     return Prepend(size, size);
1123 }
1124
1125 inline wxSizerItem*
1126 wxSizer::PrependStretchSpacer(int prop)
1127 {
1128     return Prepend(0, 0, prop);
1129 }
1130
1131 inline wxSizerItem*
1132 wxSizer::Prepend( wxWindow *window, const wxSizerFlags& flags )
1133 {
1134     return Prepend( new wxSizerItem(window, flags) );
1135 }
1136
1137 inline wxSizerItem*
1138 wxSizer::Prepend( wxSizer *sizer, const wxSizerFlags& flags )
1139 {
1140     return Prepend( new wxSizerItem(sizer, flags) );
1141 }
1142
1143 inline wxSizerItem*
1144 wxSizer::Prepend( int width, int height, const wxSizerFlags& flags )
1145 {
1146     return Prepend( new wxSizerItem(width, height, flags) );
1147 }
1148
1149 inline wxSizerItem*
1150 wxSizer::Insert( size_t index,
1151                  wxWindow *window,
1152                  int proportion,
1153                  int flag,
1154                  int border,
1155                  wxObject* userData )
1156 {
1157     return Insert( index, new wxSizerItem( window, proportion, flag, border, userData ) );
1158 }
1159
1160 inline wxSizerItem*
1161 wxSizer::Insert( size_t index,
1162                  wxSizer *sizer,
1163                  int proportion,
1164                  int flag,
1165                  int border,
1166                  wxObject* userData )
1167 {
1168     return Insert( index, new wxSizerItem( sizer, proportion, flag, border, userData ) );
1169 }
1170
1171 inline wxSizerItem*
1172 wxSizer::Insert( size_t index,
1173                  int width,
1174                  int height,
1175                  int proportion,
1176                  int flag,
1177                  int border,
1178                  wxObject* userData )
1179 {
1180     return Insert( index, new wxSizerItem( width, height, proportion, flag, border, userData ) );
1181 }
1182
1183 inline wxSizerItem*
1184 wxSizer::Insert( size_t index, wxWindow *window, const wxSizerFlags& flags )
1185 {
1186     return Insert( index, new wxSizerItem(window, flags) );
1187 }
1188
1189 inline wxSizerItem*
1190 wxSizer::Insert( size_t index, wxSizer *sizer, const wxSizerFlags& flags )
1191 {
1192     return Insert( index, new wxSizerItem(sizer, flags) );
1193 }
1194
1195 inline wxSizerItem*
1196 wxSizer::Insert( size_t index, int width, int height, const wxSizerFlags& flags )
1197 {
1198     return Insert( index, new wxSizerItem(width, height, flags) );
1199 }
1200
1201 inline wxSizerItem*
1202 wxSizer::InsertSpacer(size_t index, int size)
1203 {
1204     return Insert(index, size, size);
1205 }
1206
1207 inline wxSizerItem*
1208 wxSizer::InsertStretchSpacer(size_t index, int prop)
1209 {
1210     return Insert(index, 0, 0, prop);
1211 }
1212
1213 #endif // __WXSIZER_H__