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