src/common/sizer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sizer.cpp
   3 // Purpose:     provide new wxSizer class for layout
   4 // Author:      Robert Roebling and Robin Dunn, contributions by
   5 //              Dirk Holtwick, Ron Lee
   6 // Modified by: Ron Lee
   7 // Created:
   8 // RCS-ID:      $Id$
   9 // Copyright:   (c) Robin Dunn, Robert Roebling
  10 // Licence:     wxWindows licence
  11 /////////////////////////////////////////////////////////////////////////////
  12
  13 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  14 #pragma implementation "sizer.h"
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21     #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25     #include "wx/string.h"
  26     #include "wx/intl.h"
  27 #endif // WX_PRECOMP
  28
  29 #include "wx/sizer.h"
  30 #include "wx/utils.h"
  31 #include "wx/statbox.h"
  32 #include "wx/settings.h"
  33 #include "wx/listimpl.cpp"
  34 #include "wx/intl.h"
  35 #if WXWIN_COMPATIBILITY_2_4
  36     #include "wx/notebook.h"
  37 #endif
  38
  39 //---------------------------------------------------------------------------
  40
  41 IMPLEMENT_CLASS(wxSizerItem, wxObject)
  42 IMPLEMENT_CLASS(wxSizer, wxObject)
  43 IMPLEMENT_CLASS(wxGridSizer, wxSizer)
  44 IMPLEMENT_CLASS(wxFlexGridSizer, wxGridSizer)
  45 IMPLEMENT_CLASS(wxBoxSizer, wxSizer)
  46 #if wxUSE_STATBOX
  47 IMPLEMENT_CLASS(wxStaticBoxSizer, wxBoxSizer)
  48 #endif
  49 #if wxUSE_BUTTON
  50 IMPLEMENT_CLASS(wxStdDialogButtonSizer, wxBoxSizer)
  51 #endif
  52
  53 WX_DEFINE_EXPORTED_LIST( wxSizerItemList );
  54
  55 /*
  56     TODO PROPERTIES
  57       sizeritem
  58         object
  59         object_ref
  60           minsize
  61           option
  62           flag
  63           border
  64      spacer
  65         option
  66         flag
  67         borfder
  68     boxsizer
  69        orient
  70     staticboxsizer
  71        orient
  72        label
  73     gridsizer
  74        rows
  75        cols
  76        vgap
  77        hgap
  78     flexgridsizer
  79        rows
  80        cols
  81        vgap
  82        hgap
  83        growablerows
  84        growablecols
  85     minsize
  86 */
  87
  88 // ----------------------------------------------------------------------------
  89 // wxSizerItem
  90 // ----------------------------------------------------------------------------
  91
  92 void wxSizerItem::Init(const wxSizerFlags& flags)
  93 {
  94     Init();
  95
  96     m_proportion = flags.GetProportion();
  97     m_flag = flags.GetFlags();
  98     m_border = flags.GetBorderInPixels();
  99 }
 100
 101 wxSizerItem::wxSizerItem()
 102 {
 103     Init();
 104
 105     m_proportion = 0;
 106     m_border = 0;
 107     m_flag = 0;
 108
 109     m_kind = Item_None;
 110 }
 111
 112 // window item
 113 void wxSizerItem::SetWindow(wxWindow *window)
 114 {
 115     wxCHECK_RET( window, _T("NULL window in wxSizerItem::SetWindow()") );
 116
 117     m_kind = Item_Window;
 118     m_window = window;
 119
 120     // window doesn't become smaller than its initial size, whatever happens
 121     m_minSize = window->GetSize();
 122
 123     if ( m_flag & wxFIXED_MINSIZE )
 124         window->SetMinSize(m_minSize);
 125
 126     // aspect ratio calculated from initial size
 127     SetRatio(m_minSize);
 128 }
 129
 130 wxSizerItem::wxSizerItem(wxWindow *window,
 131                          int proportion,
 132                          int flag,
 133                          int border,
 134                          wxObject* userData)
 135            : m_proportion(proportion),
 136              m_border(border),
 137              m_flag(flag),
 138              m_userData(userData)
 139 {
 140     SetWindow(window);
 141 }
 142
 143 // sizer item
 144 void wxSizerItem::SetSizer(wxSizer *sizer)
 145 {
 146     m_kind = Item_Sizer;
 147     m_sizer = sizer;
 148 }
 149
 150 wxSizerItem::wxSizerItem(wxSizer *sizer,
 151                          int proportion,
 152                          int flag,
 153                          int border,
 154                          wxObject* userData)
 155            : m_proportion(proportion),
 156              m_border(border),
 157              m_flag(flag),
 158              m_ratio(0.0),
 159              m_userData(userData)
 160 {
 161     SetSizer(sizer);
 162
 163     // m_minSize is set later
 164 }
 165
 166 // spacer item
 167 void wxSizerItem::SetSpacer(const wxSize& size)
 168 {
 169     m_kind = Item_Spacer;
 170     m_spacer = new wxSizerSpacer(size);
 171     m_minSize = size;
 172     SetRatio(size);
 173 }
 174
 175 wxSizerItem::wxSizerItem(int width,
 176                          int height,
 177                          int proportion,
 178                          int flag,
 179                          int border,
 180                          wxObject* userData)
 181            : m_minSize(width, height), // minimal size is the initial size
 182              m_proportion(proportion),
 183              m_border(border),
 184              m_flag(flag),
 185              m_userData(userData)
 186 {
 187     SetSpacer(width, height);
 188 }
 189
 190 wxSizerItem::~wxSizerItem()
 191 {
 192     delete m_userData;
 193
 194     switch ( m_kind )
 195     {
 196         case Item_None:
 197             break;
 198
 199         case Item_Window:
 200             m_window->SetContainingSizer(NULL);
 201             break;
 202
 203         case Item_Sizer:
 204             delete m_sizer;
 205             break;
 206
 207         case Item_Spacer:
 208             delete m_spacer;
 209             break;
 210
 211         case Item_Max:
 212         default:
 213             wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
 214     }
 215 }
 216
 217 wxSize wxSizerItem::GetSpacer() const
 218 {
 219     wxSize size;
 220     if ( m_kind == Item_Spacer )
 221         size = m_spacer->GetSize();
 222
 223     return size;
 224 }
 225
 226
 227 wxSize wxSizerItem::GetSize() const
 228 {
 229     wxSize ret;
 230     switch ( m_kind )
 231     {
 232         case Item_None:
 233             break;
 234
 235         case Item_Window:
 236             ret = m_window->GetSize();
 237             break;
 238
 239         case Item_Sizer:
 240             ret = m_sizer->GetSize();
 241             break;
 242
 243         case Item_Spacer:
 244             ret = m_spacer->GetSize();
 245             break;
 246
 247         case Item_Max:
 248         default:
 249             wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
 250     }
 251
 252     if (m_flag & wxWEST)
 253         ret.x += m_border;
 254     if (m_flag & wxEAST)
 255         ret.x += m_border;
 256     if (m_flag & wxNORTH)
 257         ret.y += m_border;
 258     if (m_flag & wxSOUTH)
 259         ret.y += m_border;
 260
 261     return ret;
 262 }
 263
 264 wxSize wxSizerItem::CalcMin()
 265 {
 266     if (IsSizer())
 267     {
 268         m_minSize = m_sizer->GetMinSize();
 269
 270         // if we have to preserve aspect ratio _AND_ this is
 271         // the first-time calculation, consider ret to be initial size
 272         if ((m_flag & wxSHAPED) && !m_ratio)
 273             SetRatio(m_minSize);
 274     }
 275     else if ( IsWindow() )
 276     {
 277         // Since the size of the window may change during runtime, we
 278         // should use the current minimal/best size.
 279         m_minSize = m_window->GetBestFittingSize();
 280     }
 281
 282     return GetMinSizeWithBorder();
 283 }
 284
 285 wxSize wxSizerItem::GetMinSizeWithBorder() const
 286 {
 287     wxSize ret = m_minSize;
 288
 289     if (m_flag & wxWEST)
 290         ret.x += m_border;
 291     if (m_flag & wxEAST)
 292         ret.x += m_border;
 293     if (m_flag & wxNORTH)
 294         ret.y += m_border;
 295     if (m_flag & wxSOUTH)
 296         ret.y += m_border;
 297
 298     return ret;
 299 }
 300
 301
 302 void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
 303 {
 304     if (m_flag & wxSHAPED)
 305     {
 306         // adjust aspect ratio
 307         int rwidth = (int) (size.y * m_ratio);
 308         if (rwidth > size.x)
 309         {
 310             // fit horizontally
 311             int rheight = (int) (size.x / m_ratio);
 312             // add vertical space
 313             if (m_flag & wxALIGN_CENTER_VERTICAL)
 314                 pos.y += (size.y - rheight) / 2;
 315             else if (m_flag & wxALIGN_BOTTOM)
 316                 pos.y += (size.y - rheight);
 317             // use reduced dimensions
 318             size.y =rheight;
 319         }
 320         else if (rwidth < size.x)
 321         {
 322             // add horizontal space
 323             if (m_flag & wxALIGN_CENTER_HORIZONTAL)
 324                 pos.x += (size.x - rwidth) / 2;
 325             else if (m_flag & wxALIGN_RIGHT)
 326                 pos.x += (size.x - rwidth);
 327             size.x = rwidth;
 328         }
 329     }
 330
 331     // This is what GetPosition() returns. Since we calculate
 332     // borders afterwards, GetPosition() will be the left/top
 333     // corner of the surrounding border.
 334     m_pos = pos;
 335
 336     if (m_flag & wxWEST)
 337     {
 338         pos.x += m_border;
 339         size.x -= m_border;
 340     }
 341     if (m_flag & wxEAST)
 342     {
 343         size.x -= m_border;
 344     }
 345     if (m_flag & wxNORTH)
 346     {
 347         pos.y += m_border;
 348         size.y -= m_border;
 349     }
 350     if (m_flag & wxSOUTH)
 351     {
 352         size.y -= m_border;
 353     }
 354
 355     m_rect = wxRect(pos, size);
 356
 357     switch ( m_kind )
 358     {
 359         case Item_None:
 360             wxFAIL_MSG( _T("can't set size of uninitialized sizer item") );
 361             break;
 362
 363         case Item_Window:
 364             m_window->SetSize(pos.x, pos.y, size.x, size.y,
 365                               wxSIZE_ALLOW_MINUS_ONE);
 366             break;
 367
 368         case Item_Sizer:
 369             m_sizer->SetDimension(pos.x, pos.y, size.x, size.y);
 370             break;
 371
 372         case Item_Spacer:
 373             m_spacer->SetSize(size);
 374             break;
 375
 376         case Item_Max:
 377         default:
 378             wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
 379     }
 380 }
 381
 382 void wxSizerItem::DeleteWindows()
 383 {
 384     switch ( m_kind )
 385     {
 386         case Item_None:
 387         case Item_Spacer:
 388             break;
 389
 390         case Item_Window:
 391             m_window->Destroy();
 392             break;
 393
 394         case Item_Sizer:
 395             m_sizer->DeleteWindows();
 396             break;
 397
 398         case Item_Max:
 399         default:
 400             wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
 401     }
 402
 403     m_kind = Item_None;
 404 }
 405
 406 void wxSizerItem::Show( bool show )
 407 {
 408     switch ( m_kind )
 409     {
 410         case Item_None:
 411             wxFAIL_MSG( _T("can't show uninitialized sizer item") );
 412             break;
 413
 414         case Item_Window:
 415             m_window->Show(show);
 416             break;
 417
 418         case Item_Sizer:
 419             m_sizer->Show(show);
 420             break;
 421
 422         case Item_Spacer:
 423             m_spacer->Show(show);
 424             break;
 425
 426         case Item_Max:
 427         default:
 428             wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
 429     }
 430 }
 431
 432 bool wxSizerItem::IsShown() const
 433 {
 434     switch ( m_kind )
 435     {
 436         case Item_None:
 437             wxFAIL_MSG( _T("uninitialized sizer item") );
 438             break;
 439
 440         case Item_Window:
 441             return m_window->IsShown();
 442
 443         case Item_Sizer:
 444             return m_sizer->IsShown();
 445
 446         case Item_Spacer:
 447             return m_spacer->IsShown();
 448
 449         case Item_Max:
 450         default:
 451             wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
 452     }
 453
 454     return false;
 455 }
 456
 457 void wxSizerItem::SetOption( int option )
 458 {
 459     SetProportion( option );
 460 }
 461
 462 int wxSizerItem::GetOption() const
 463 {
 464     return GetProportion();
 465 }
 466
 467
 468 //---------------------------------------------------------------------------
 469 // wxSizer
 470 //---------------------------------------------------------------------------
 471
 472 wxSizer::wxSizer()
 473 {
 474     m_isShown = true;
 475 }
 476
 477 wxSizer::~wxSizer()
 478 {
 479     WX_CLEAR_LIST(wxSizerItemList, m_children);
 480 }
 481
 482 wxSizerItem* wxSizer::Insert( size_t index, wxSizerItem *item )
 483 {
 484     m_children.Insert( index, item );
 485
 486     if ( item->GetWindow() )
 487         item->GetWindow()->SetContainingSizer( this );
 488
 489     return item;
 490 }
 491
 492 bool wxSizer::Remove( wxWindow *window )
 493 {
 494     return Detach( window );
 495 }
 496
 497 bool wxSizer::Remove( wxSizer *sizer )
 498 {
 499     wxASSERT_MSG( sizer, _T("Removing NULL sizer") );
 500
 501     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 502     while (node)
 503     {
 504         wxSizerItem     *item = node->GetData();
 505
 506         if (item->GetSizer() == sizer)
 507         {
 508             delete item;
 509             m_children.Erase( node );
 510             return true;
 511         }
 512
 513         node = node->GetNext();
 514     }
 515
 516     return false;
 517 }
 518
 519 bool wxSizer::Remove( int index )
 520 {
 521     wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(),
 522                  false,
 523                  _T("Remove index is out of range") );
 524
 525     wxSizerItemList::compatibility_iterator node = m_children.Item( index );
 526
 527     wxCHECK_MSG( node, false, _T("Failed to find child node") );
 528
 529     wxSizerItem *item = node->GetData();
 530
 531     if ( item->IsWindow() )
 532         item->GetWindow()->SetContainingSizer( NULL );
 533
 534     delete item;
 535     m_children.Erase( node );
 536     return true;
 537 }
 538
 539 bool wxSizer::Detach( wxSizer *sizer )
 540 {
 541     wxASSERT_MSG( sizer, _T("Detaching NULL sizer") );
 542
 543     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 544     while (node)
 545     {
 546         wxSizerItem     *item = node->GetData();
 547
 548         if (item->GetSizer() == sizer)
 549         {
 550             item->DetachSizer();
 551             delete item;
 552             m_children.Erase( node );
 553             return true;
 554         }
 555         node = node->GetNext();
 556     }
 557
 558     return false;
 559 }
 560
 561 bool wxSizer::Detach( wxWindow *window )
 562 {
 563     wxASSERT_MSG( window, _T("Detaching NULL window") );
 564
 565     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 566     while (node)
 567     {
 568         wxSizerItem     *item = node->GetData();
 569
 570         if (item->GetWindow() == window)
 571         {
 572             item->GetWindow()->SetContainingSizer( NULL );
 573             delete item;
 574             m_children.Erase( node );
 575             return true;
 576         }
 577         node = node->GetNext();
 578     }
 579
 580     return false;
 581 }
 582
 583 bool wxSizer::Detach( int index )
 584 {
 585     wxCHECK_MSG( index >= 0 && (size_t)index < m_children.GetCount(),
 586                  false,
 587                  _T("Detach index is out of range") );
 588
 589     wxSizerItemList::compatibility_iterator node = m_children.Item( index );
 590
 591     wxCHECK_MSG( node, false, _T("Failed to find child node") );
 592
 593     wxSizerItem *item = node->GetData();
 594
 595     if ( item->IsSizer() )
 596         item->DetachSizer();
 597     else if ( item->IsWindow() )
 598         item->GetWindow()->SetContainingSizer( NULL );
 599
 600     delete item;
 601     m_children.Erase( node );
 602     return true;
 603 }
 604
 605 void wxSizer::Clear( bool delete_windows )
 606 {
 607     // First clear the ContainingSizer pointers
 608     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 609     while (node)
 610     {
 611         wxSizerItem     *item = node->GetData();
 612
 613         if (item->IsWindow())
 614             item->GetWindow()->SetContainingSizer( NULL );
 615         node = node->GetNext();
 616     }
 617
 618     // Destroy the windows if needed
 619     if (delete_windows)
 620         DeleteWindows();
 621
 622     // Now empty the list
 623     WX_CLEAR_LIST(wxSizerItemList, m_children);
 624 }
 625
 626 void wxSizer::DeleteWindows()
 627 {
 628     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 629     while (node)
 630     {
 631         wxSizerItem     *item = node->GetData();
 632
 633         item->DeleteWindows();
 634         node = node->GetNext();
 635     }
 636 }
 637
 638 wxSize wxSizer::Fit( wxWindow *window )
 639 {
 640     wxSize size(window->IsTopLevel() ? FitSize(window)
 641                                      : GetMinWindowSize(window));
 642
 643     window->SetSize( size );
 644
 645     return size;
 646 }
 647
 648 void wxSizer::FitInside( wxWindow *window )
 649 {
 650     wxSize size;
 651     if (window->IsTopLevel())
 652         size = VirtualFitSize( window );
 653     else
 654         size = GetMinClientSize( window );
 655
 656     window->SetVirtualSize( size );
 657 }
 658
 659 void wxSizer::Layout()
 660 {
 661     // (re)calculates minimums needed for each item and other preparations
 662     // for layout
 663     CalcMin();
 664
 665     // Applies the layout and repositions/resizes the items
 666     RecalcSizes();
 667 }
 668
 669 void wxSizer::SetSizeHints( wxWindow *window )
 670 {
 671     // Preserve the window's max size hints, but set the
 672     // lower bound according to the sizer calculations.
 673
 674     wxSize size = Fit( window );
 675
 676     window->SetSizeHints( size.x,
 677                           size.y,
 678                           window->GetMaxWidth(),
 679                           window->GetMaxHeight() );
 680 }
 681
 682 void wxSizer::SetVirtualSizeHints( wxWindow *window )
 683 {
 684     // Preserve the window's max size hints, but set the
 685     // lower bound according to the sizer calculations.
 686
 687     FitInside( window );
 688     wxSize size( window->GetVirtualSize() );
 689     window->SetVirtualSizeHints( size.x,
 690                                  size.y,
 691                                  window->GetMaxWidth(),
 692                                  window->GetMaxHeight() );
 693 }
 694
 695 wxSize wxSizer::GetMaxWindowSize( wxWindow *window ) const
 696 {
 697     return window->GetMaxSize();
 698 }
 699
 700 wxSize wxSizer::GetMinWindowSize( wxWindow *window )
 701 {
 702     wxSize      minSize( GetMinSize() );
 703     wxSize      size( window->GetSize() );
 704     wxSize      client_size( window->GetClientSize() );
 705
 706     return wxSize( minSize.x+size.x-client_size.x,
 707                    minSize.y+size.y-client_size.y );
 708 }
 709
 710 // TODO on mac we need a function that determines how much free space this
 711 // min size contains, in order to make sure that we have 20 pixels of free
 712 // space around the controls
 713
 714 // Return a window size that will fit within the screens dimensions
 715 wxSize wxSizer::FitSize( wxWindow *window )
 716 {
 717     wxSize size     = GetMinWindowSize( window );
 718     wxSize sizeMax  = GetMaxWindowSize( window );
 719
 720     // Limit the size if sizeMax != wxDefaultSize
 721
 722     if ( size.x > sizeMax.x && sizeMax.x != wxDefaultCoord )
 723         size.x = sizeMax.x;
 724     if ( size.y > sizeMax.y && sizeMax.y != wxDefaultCoord )
 725         size.y = sizeMax.y;
 726
 727     return size;
 728 }
 729
 730 wxSize wxSizer::GetMaxClientSize( wxWindow *window ) const
 731 {
 732     wxSize maxSize( window->GetMaxSize() );
 733
 734     if ( maxSize != wxDefaultSize )
 735     {
 736         wxSize size( window->GetSize() );
 737         wxSize client_size( window->GetClientSize() );
 738
 739         return wxSize( maxSize.x + client_size.x - size.x,
 740                        maxSize.y + client_size.y - size.y );
 741     }
 742     else
 743         return wxDefaultSize;
 744 }
 745
 746 wxSize wxSizer::GetMinClientSize( wxWindow *WXUNUSED(window) )
 747 {
 748     return GetMinSize();  // Already returns client size.
 749 }
 750
 751 wxSize wxSizer::VirtualFitSize( wxWindow *window )
 752 {
 753     wxSize size     = GetMinClientSize( window );
 754     wxSize sizeMax  = GetMaxClientSize( window );
 755
 756     // Limit the size if sizeMax != wxDefaultSize
 757
 758     if ( size.x > sizeMax.x && sizeMax.x != wxDefaultCoord )
 759         size.x = sizeMax.x;
 760     if ( size.y > sizeMax.y && sizeMax.y != wxDefaultCoord )
 761         size.y = sizeMax.y;
 762
 763     return size;
 764 }
 765
 766 void wxSizer::SetDimension( int x, int y, int width, int height )
 767 {
 768     m_position.x = x;
 769     m_position.y = y;
 770     m_size.x = width;
 771     m_size.y = height;
 772     Layout();
 773 }
 774
 775 wxSize wxSizer::GetMinSize()
 776 {
 777     wxSize ret( CalcMin() );
 778     if (ret.x < m_minSize.x) ret.x = m_minSize.x;
 779     if (ret.y < m_minSize.y) ret.y = m_minSize.y;
 780     return ret;
 781 }
 782
 783 void wxSizer::DoSetMinSize( int width, int height )
 784 {
 785     m_minSize.x = width;
 786     m_minSize.y = height;
 787 }
 788
 789 bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height )
 790 {
 791     wxASSERT_MSG( window, _T("SetMinSize for NULL window") );
 792
 793     // Is it our immediate child?
 794
 795     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 796     while (node)
 797     {
 798         wxSizerItem     *item = node->GetData();
 799
 800         if (item->GetWindow() == window)
 801         {
 802             item->SetMinSize( width, height );
 803             return true;
 804         }
 805         node = node->GetNext();
 806     }
 807
 808     // No?  Search any subsizers we own then
 809
 810     node = m_children.GetFirst();
 811     while (node)
 812     {
 813         wxSizerItem     *item = node->GetData();
 814
 815         if ( item->GetSizer() &&
 816              item->GetSizer()->DoSetItemMinSize( window, width, height ) )
 817         {
 818             // A child sizer found the requested windw, exit.
 819             return true;
 820         }
 821         node = node->GetNext();
 822     }
 823
 824     return false;
 825 }
 826
 827 bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height )
 828 {
 829     wxASSERT_MSG( sizer, _T("SetMinSize for NULL sizer") );
 830
 831     // Is it our immediate child?
 832
 833     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 834     while (node)
 835     {
 836         wxSizerItem     *item = node->GetData();
 837
 838         if (item->GetSizer() == sizer)
 839         {
 840             item->GetSizer()->DoSetMinSize( width, height );
 841             return true;
 842         }
 843         node = node->GetNext();
 844     }
 845
 846     // No?  Search any subsizers we own then
 847
 848     node = m_children.GetFirst();
 849     while (node)
 850     {
 851         wxSizerItem     *item = node->GetData();
 852
 853         if ( item->GetSizer() &&
 854              item->GetSizer()->DoSetItemMinSize( sizer, width, height ) )
 855         {
 856             // A child found the requested sizer, exit.
 857             return true;
 858         }
 859         node = node->GetNext();
 860     }
 861
 862     return false;
 863 }
 864
 865 bool wxSizer::DoSetItemMinSize( size_t index, int width, int height )
 866 {
 867     wxSizerItemList::compatibility_iterator node = m_children.Item( index );
 868
 869     wxCHECK_MSG( node, false, _T("Failed to find child node") );
 870
 871     wxSizerItem     *item = node->GetData();
 872
 873     if (item->GetSizer())
 874     {
 875         // Sizers contains the minimal size in them, if not calculated ...
 876         item->GetSizer()->DoSetMinSize( width, height );
 877     }
 878     else
 879     {
 880         // ... but the minimal size of spacers and windows is stored via the item
 881         item->SetMinSize( width, height );
 882     }
 883
 884     return true;
 885 }
 886
 887 wxSizerItem* wxSizer::GetItem( wxWindow *window, bool recursive )
 888 {
 889     wxASSERT_MSG( window, _T("GetItem for NULL window") );
 890
 891     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 892     while (node)
 893     {
 894         wxSizerItem     *item = node->GetData();
 895
 896         if (item->GetWindow() == window)
 897         {
 898             return item;
 899         }
 900         else if (recursive && item->IsSizer())
 901         {
 902             wxSizerItem *subitem = item->GetSizer()->GetItem( window, true );
 903             if (subitem)
 904                 return subitem;
 905         }
 906
 907         node = node->GetNext();
 908     }
 909
 910     return NULL;
 911 }
 912
 913 wxSizerItem* wxSizer::GetItem( wxSizer *sizer, bool recursive )
 914 {
 915     wxASSERT_MSG( sizer, _T("GetItem for NULL sizer") );
 916
 917     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 918     while (node)
 919     {
 920         wxSizerItem *item = node->GetData();
 921
 922         if (item->GetSizer() == sizer)
 923         {
 924             return item;
 925         }
 926         else if (recursive && item->IsSizer())
 927         {
 928             wxSizerItem *subitem = item->GetSizer()->GetItem( sizer, true );
 929             if (subitem)
 930                 return subitem;
 931         }
 932
 933         node = node->GetNext();
 934     }
 935
 936     return NULL;
 937 }
 938
 939 wxSizerItem* wxSizer::GetItem( size_t index )
 940 {
 941     wxCHECK_MSG( index < m_children.GetCount(),
 942                  NULL,
 943                  _T("GetItem index is out of range") );
 944
 945     return m_children.Item( index )->GetData();
 946 }
 947
 948 bool wxSizer::Show( wxWindow *window, bool show, bool recursive )
 949 {
 950     wxSizerItem *item = GetItem( window, recursive );
 951
 952     if ( item )
 953     {
 954          item->Show( show );
 955          return true;
 956     }
 957
 958     return false;
 959 }
 960
 961 bool wxSizer::Show( wxSizer *sizer, bool show, bool recursive )
 962 {
 963     wxSizerItem *item = GetItem( sizer, recursive );
 964
 965     if ( item )
 966     {
 967          item->Show( show );
 968          return true;
 969     }
 970
 971     return false;
 972 }
 973
 974 bool wxSizer::Show( size_t index, bool show)
 975 {
 976     wxSizerItem *item = GetItem( index );
 977
 978     if ( item )
 979     {
 980          item->Show( show );
 981          return true;
 982     }
 983
 984     return false;
 985 }
 986
 987 void wxSizer::ShowItems( bool show )
 988 {
 989     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
 990     while (node)
 991     {
 992         node->GetData()->Show( show );
 993         node = node->GetNext();
 994     }
 995 }
 996
 997 bool wxSizer::IsShown( wxWindow *window ) const
 998 {
 999     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
1000     while (node)
1001     {
1002         wxSizerItem     *item = node->GetData();
1003
1004         if (item->GetWindow() == window)
1005         {
1006             return item->IsShown();
1007         }
1008         node = node->GetNext();
1009     }
1010
1011     wxFAIL_MSG( _T("IsShown failed to find sizer item") );
1012
1013     return false;
1014 }
1015
1016 bool wxSizer::IsShown( wxSizer *sizer ) const
1017 {
1018     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
1019     while (node)
1020     {
1021         wxSizerItem     *item = node->GetData();
1022
1023         if (item->GetSizer() == sizer)
1024         {
1025             return item->IsShown();
1026         }
1027         node = node->GetNext();
1028     }
1029
1030     wxFAIL_MSG( _T("IsShown failed to find sizer item") );
1031
1032     return false;
1033 }
1034
1035 bool wxSizer::IsShown( size_t index ) const
1036 {
1037     wxCHECK_MSG( index < m_children.GetCount(),
1038                  false,
1039                  _T("IsShown index is out of range") );
1040
1041     return m_children.Item( index )->GetData()->IsShown();
1042 }
1043
1044
1045 //---------------------------------------------------------------------------
1046 // wxGridSizer
1047 //---------------------------------------------------------------------------
1048
1049 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
1050     : m_rows( rows )
1051     , m_cols( cols )
1052     , m_vgap( vgap )
1053     , m_hgap( hgap )
1054 {
1055     if (m_rows == 0 && m_cols == 0)
1056         m_rows = 1;
1057 }
1058
1059 wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
1060     : m_rows( 0 )
1061     , m_cols( cols )
1062     , m_vgap( vgap )
1063     , m_hgap( hgap )
1064 {
1065     if (m_rows == 0 && m_cols == 0)
1066         m_rows = 1;
1067 }
1068
1069 int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const
1070 {
1071     int nitems = m_children.GetCount();
1072     if ( nitems)
1073     {
1074         if ( m_cols )
1075         {
1076             ncols = m_cols;
1077             nrows = (nitems + m_cols - 1) / m_cols;
1078         }
1079         else if ( m_rows )
1080         {
1081             ncols = (nitems + m_rows - 1) / m_rows;
1082             nrows = m_rows;
1083         }
1084         else // 0 columns, 0 rows?
1085         {
1086             wxFAIL_MSG( _T("grid sizer must have either rows or columns fixed") );
1087
1088             nrows = ncols = 0;
1089         }
1090     }
1091
1092     return nitems;
1093 }
1094
1095 void wxGridSizer::RecalcSizes()
1096 {
1097     int nitems, nrows, ncols;
1098     if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 )
1099         return;
1100
1101     wxSize sz( GetSize() );
1102     wxPoint pt( GetPosition() );
1103
1104     int w = (sz.x - (ncols - 1) * m_hgap) / ncols;
1105     int h = (sz.y - (nrows - 1) * m_vgap) / nrows;
1106
1107     int x = pt.x;
1108     for (int c = 0; c < ncols; c++)
1109     {
1110         int y = pt.y;
1111         for (int r = 0; r < nrows; r++)
1112         {
1113             int i = r * ncols + c;
1114             if (i < nitems)
1115             {
1116                 wxSizerItemList::compatibility_iterator node = m_children.Item( i );
1117
1118                 wxASSERT_MSG( node, _T("Failed to find SizerItemList node") );
1119
1120                 SetItemBounds( node->GetData(), x, y, w, h);
1121             }
1122             y = y + h + m_vgap;
1123         }
1124         x = x + w + m_hgap;
1125     }
1126 }
1127
1128 wxSize wxGridSizer::CalcMin()
1129 {
1130     int nrows, ncols;
1131     if ( CalcRowsCols(nrows, ncols) == 0 )
1132         return wxSize(10, 10);
1133
1134     // Find the max width and height for any component
1135     int w = 0;
1136     int h = 0;
1137
1138     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
1139     while (node)
1140     {
1141         wxSizerItem     *item = node->GetData();
1142         wxSize           sz( item->CalcMin() );
1143
1144         w = wxMax( w, sz.x );
1145         h = wxMax( h, sz.y );
1146
1147         node = node->GetNext();
1148     }
1149
1150     return wxSize( ncols * w + (ncols-1) * m_hgap,
1151                    nrows * h + (nrows-1) * m_vgap );
1152 }
1153
1154 void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
1155 {
1156     wxPoint pt( x,y );
1157     wxSize sz( item->GetMinSizeWithBorder() );
1158     int flag = item->GetFlag();
1159
1160     if ((flag & wxEXPAND) || (flag & wxSHAPED))
1161     {
1162        sz = wxSize(w, h);
1163     }
1164     else
1165     {
1166         if (flag & wxALIGN_CENTER_HORIZONTAL)
1167         {
1168             pt.x = x + (w - sz.x) / 2;
1169         }
1170         else if (flag & wxALIGN_RIGHT)
1171         {
1172             pt.x = x + (w - sz.x);
1173         }
1174
1175         if (flag & wxALIGN_CENTER_VERTICAL)
1176         {
1177             pt.y = y + (h - sz.y) / 2;
1178         }
1179         else if (flag & wxALIGN_BOTTOM)
1180         {
1181             pt.y = y + (h - sz.y);
1182         }
1183     }
1184
1185     item->SetDimension(pt, sz);
1186 }
1187
1188 //---------------------------------------------------------------------------
1189 // wxFlexGridSizer
1190 //---------------------------------------------------------------------------
1191
1192 wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap )
1193                : wxGridSizer( rows, cols, vgap, hgap ),
1194                  m_flexDirection(wxBOTH),
1195                  m_growMode(wxFLEX_GROWMODE_SPECIFIED)
1196 {
1197 }
1198
1199 wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap )
1200                : wxGridSizer( cols, vgap, hgap ),
1201                  m_flexDirection(wxBOTH),
1202                  m_growMode(wxFLEX_GROWMODE_SPECIFIED)
1203 {
1204 }
1205
1206 wxFlexGridSizer::~wxFlexGridSizer()
1207 {
1208 }
1209
1210 void wxFlexGridSizer::RecalcSizes()
1211 {
1212     int nitems, nrows, ncols;
1213     if ( (nitems = CalcRowsCols(nrows, ncols)) == 0 )
1214         return;
1215
1216     wxPoint pt( GetPosition() );
1217     wxSize sz( GetSize() );
1218
1219     AdjustForGrowables(sz, m_calculatedMinSize, nrows, ncols);
1220
1221     sz = wxSize( pt.x + sz.x, pt.y + sz.y );
1222
1223     int x = pt.x;
1224     for (int c = 0; c < ncols; c++)
1225     {
1226         int y = pt.y;
1227         for (int r = 0; r < nrows; r++)
1228         {
1229             int i = r * ncols + c;
1230             if (i < nitems)
1231             {
1232                 wxSizerItemList::compatibility_iterator node = m_children.Item( i );
1233
1234                 wxASSERT_MSG( node, _T("Failed to find node") );
1235
1236                 int w = wxMax( 0, wxMin( m_colWidths[c], sz.x - x ) );
1237                 int h = wxMax( 0, wxMin( m_rowHeights[r], sz.y - y ) );
1238
1239                 SetItemBounds( node->GetData(), x, y, w, h);
1240             }
1241             if (m_rowHeights[r] != -1)
1242                 y = y + m_rowHeights[r] + m_vgap;
1243         }
1244         if (m_colWidths[c] != -1)
1245             x = x + m_colWidths[c] + m_hgap;
1246     }
1247 }
1248
1249 wxSize wxFlexGridSizer::CalcMin()
1250 {
1251     int     nrows,
1252             ncols;
1253     size_t  i, s;
1254
1255     // Number of rows/columns can change as items are added or removed.
1256     if ( !CalcRowsCols(nrows, ncols) )
1257         return wxSize(10, 10);
1258
1259     m_rowHeights.SetCount(nrows);
1260     m_colWidths.SetCount(ncols);
1261
1262     // We have to recalcuate the sizes in case the item minimum size has
1263     // changed since the previous layout, or the item has been hidden using
1264     // wxSizer::Show(). If all the items in a row/column are hidden, the final
1265     // dimension of the row/column will be -1, indicating that the column
1266     // itself is hidden.
1267     for( s = m_rowHeights.GetCount(), i = 0; i < s; ++i )
1268         m_rowHeights[ i ] = -1;
1269     for( s = m_colWidths.GetCount(), i = 0; i < s; ++i )
1270         m_colWidths[ i ] = -1;
1271
1272     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
1273
1274     i = 0;
1275     while (node)
1276     {
1277         wxSizerItem    *item = node->GetData();
1278         if ( item->IsShown() )
1279         {
1280             wxSize sz( item->CalcMin() );
1281             int row = i / ncols;
1282             int col = i % ncols;
1283
1284             m_rowHeights[ row ] = wxMax( wxMax( 0, sz.y ), m_rowHeights[ row ] );
1285             m_colWidths[ col ] = wxMax( wxMax( 0, sz.x ), m_colWidths[ col ] );
1286         }
1287
1288         node = node->GetNext();
1289         i++;
1290     }
1291
1292     AdjustForFlexDirection();
1293
1294     // Sum total minimum size, including gaps between rows/columns.
1295     // -1 is used as a magic number meaning empty column.
1296     int width = 0;
1297     for (int col = 0; col < ncols; col++)
1298         if ( m_colWidths[ col ] != -1 )
1299             width += m_colWidths[ col ] + m_hgap;
1300     if (width > 0)
1301         width -= m_hgap;
1302
1303     int height = 0;
1304     for (int row = 0; row < nrows; row++)
1305         if ( m_rowHeights[ row ] != -1 )
1306             height += m_rowHeights[ row ] + m_vgap;
1307     if (height > 0)
1308         height -= m_vgap;
1309
1310     m_calculatedMinSize = wxSize( width, height );
1311     return m_calculatedMinSize;
1312 }
1313
1314 void wxFlexGridSizer::AdjustForFlexDirection()
1315 {
1316     // the logic in CalcMin works when we resize flexibly in both directions
1317     // but maybe this is not the case
1318     if ( m_flexDirection != wxBOTH )
1319     {
1320         // select the array corresponding to the direction in which we do *not*
1321         // resize flexibly
1322         wxArrayInt& array = m_flexDirection == wxVERTICAL ? m_colWidths
1323                                                           : m_rowHeights;
1324
1325         const int count = array.GetCount();
1326
1327         // find the largest value in this array
1328         int n, largest = 0;
1329         for ( n = 0; n < count; ++n )
1330         {
1331             if ( array[n] > largest )
1332                 largest = array[n];
1333         }
1334
1335         // and now fill it with the largest value
1336         for ( n = 0; n < count; ++n )
1337         {
1338             array[n] = largest;
1339         }
1340     }
1341 }
1342
1343
1344 void wxFlexGridSizer::AdjustForGrowables(const wxSize& sz, const wxSize& minsz,
1345                                          int nrows, int ncols)
1346 {
1347     // what to do with the rows? by default, resize them proportionally
1348     if ( sz.y > minsz.y && ( (m_flexDirection & wxVERTICAL) || (m_growMode == wxFLEX_GROWMODE_SPECIFIED) ) )
1349     {
1350         int sum_proportions = 0;
1351         int growable_space = 0;
1352         int num = 0;
1353         size_t idx;
1354         for (idx = 0; idx < m_growableRows.GetCount(); idx++)
1355         {
1356             // Since the number of rows/columns can change as items are
1357             // inserted/deleted, we need to verify at runtime that the
1358             // requested growable rows/columns are still valid.
1359             if (m_growableRows[idx] >= nrows)
1360                 continue;
1361
1362             // If all items in a row/column are hidden, that row/column will
1363             // have a dimension of -1.  This causes the row/column to be
1364             // hidden completely.
1365             if (m_rowHeights[ m_growableRows[idx] ] == -1)
1366                 continue;
1367             sum_proportions += m_growableRowsProportions[idx];
1368             growable_space += m_rowHeights[ m_growableRows[idx] ];
1369             num++;
1370         }
1371
1372         if (num > 0)
1373         {
1374             for (idx = 0; idx < m_growableRows.GetCount(); idx++)
1375             {
1376                 if (m_growableRows[idx] >= nrows )
1377                     continue;
1378                 if (m_rowHeights[ m_growableRows[idx] ] == -1)
1379                     m_rowHeights[ m_growableRows[idx] ] = 0;
1380                 else
1381                 {
1382                     int delta = (sz.y - minsz.y);
1383                     if (sum_proportions == 0)
1384                         delta = (delta/num) + m_rowHeights[ m_growableRows[idx] ];
1385                     else
1386                         delta = ((delta+growable_space)*m_growableRowsProportions[idx]) / sum_proportions;
1387                     m_rowHeights[ m_growableRows[idx] ] = delta;
1388                 }
1389             }
1390         }
1391     }
1392     else if ( (m_growMode == wxFLEX_GROWMODE_ALL) && (sz.y > minsz.y) )
1393     {
1394         // rounding problem?
1395         for ( int row = 0; row < nrows; ++row )
1396             m_rowHeights[ row ] = sz.y / nrows;
1397     }
1398
1399     // the same logic as above but for the columns
1400     if ( sz.x > minsz.x && ( (m_flexDirection & wxHORIZONTAL) || (m_growMode == wxFLEX_GROWMODE_SPECIFIED) ) )
1401     {
1402         int sum_proportions = 0;
1403         int growable_space = 0;
1404         int num = 0;
1405         size_t idx;
1406         for (idx = 0; idx < m_growableCols.GetCount(); idx++)
1407         {
1408             // Since the number of rows/columns can change as items are
1409             // inserted/deleted, we need to verify at runtime that the
1410             // requested growable rows/columns are still valid.
1411             if (m_growableCols[idx] >= ncols)
1412                 continue;
1413
1414             // If all items in a row/column are hidden, that row/column will
1415             // have a dimension of -1.  This causes the column to be hidden
1416             // completely.
1417             if (m_colWidths[ m_growableCols[idx] ] == -1)
1418                 continue;
1419             sum_proportions += m_growableColsProportions[idx];
1420             growable_space += m_colWidths[ m_growableCols[idx] ];
1421             num++;
1422         }
1423
1424         if (num > 0)
1425         {
1426             for (idx = 0; idx < m_growableCols.GetCount(); idx++)
1427             {
1428                 if (m_growableCols[idx] >= ncols )
1429                     continue;
1430                 if (m_colWidths[ m_growableCols[idx] ] == -1)
1431                     m_colWidths[ m_growableCols[idx] ] = 0;
1432                 else
1433                 {
1434                     int delta = (sz.x - minsz.x);
1435                     if (sum_proportions == 0)
1436                         delta = (delta/num) + m_colWidths[ m_growableCols[idx] ];
1437                     else
1438                         delta = ((delta+growable_space)*m_growableColsProportions[idx])/sum_proportions;
1439                     m_colWidths[ m_growableCols[idx] ] = delta;
1440                 }
1441             }
1442         }
1443     }
1444     else if ( (m_growMode == wxFLEX_GROWMODE_ALL) && (sz.x > minsz.x) )
1445     {
1446         for ( int col=0; col < ncols; ++col )
1447             m_colWidths[ col ] = sz.x / ncols;
1448     }
1449 }
1450
1451
1452 void wxFlexGridSizer::AddGrowableRow( size_t idx, int proportion )
1453 {
1454     m_growableRows.Add( idx );
1455     m_growableRowsProportions.Add( proportion );
1456 }
1457
1458 void wxFlexGridSizer::RemoveGrowableRow( size_t idx )
1459 {
1460     m_growableRows.Remove( idx );
1461 }
1462
1463 void wxFlexGridSizer::AddGrowableCol( size_t idx, int proportion )
1464 {
1465     m_growableCols.Add( idx );
1466     m_growableColsProportions.Add( proportion );
1467 }
1468
1469 void wxFlexGridSizer::RemoveGrowableCol( size_t idx )
1470 {
1471     m_growableCols.Remove( idx );
1472 }
1473
1474 //---------------------------------------------------------------------------
1475 // wxBoxSizer
1476 //---------------------------------------------------------------------------
1477
1478 wxBoxSizer::wxBoxSizer( int orient )
1479     : m_orient( orient )
1480 {
1481 }
1482
1483 void wxBoxSizer::RecalcSizes()
1484 {
1485     if (m_children.GetCount() == 0)
1486         return;
1487
1488     int delta = 0;
1489     if (m_stretchable)
1490     {
1491         if (m_orient == wxHORIZONTAL)
1492             delta = m_size.x - m_fixedWidth;
1493         else
1494             delta = m_size.y - m_fixedHeight;
1495     }
1496
1497     wxPoint pt( m_position );
1498
1499     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
1500     while (node)
1501     {
1502         wxSizerItem     *item = node->GetData();
1503
1504         if (item->IsShown())
1505         {
1506             wxSize size( item->GetMinSizeWithBorder() );
1507
1508             if (m_orient == wxVERTICAL)
1509             {
1510                 wxCoord height = size.y;
1511                 if (item->GetProportion())
1512                 {
1513                     // Because of at least one visible item has non-zero
1514                     // proportion then m_stretchable is not zero
1515                     height = (delta * item->GetProportion()) / m_stretchable;
1516                 }
1517
1518                 wxPoint child_pos( pt );
1519                 wxSize  child_size( size.x, height );
1520
1521                 if (item->GetFlag() & (wxEXPAND | wxSHAPED))
1522                     child_size.x = m_size.x;
1523                 else if (item->GetFlag() & wxALIGN_RIGHT)
1524                     child_pos.x += m_size.x - size.x;
1525                 else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_HORIZONTAL))
1526                 // XXX wxCENTER is added for backward compatibility;
1527                 //     wxALIGN_CENTER should be used in new code
1528                     child_pos.x += (m_size.x - size.x) / 2;
1529
1530                 item->SetDimension( child_pos, child_size );
1531
1532                 pt.y += height;
1533             }
1534             else
1535             {
1536                 wxCoord width = size.x;
1537                 if (item->GetProportion())
1538                 {
1539                     // Because of at least one visible item has non-zero
1540                     // proportion then m_stretchable is not zero
1541                     width = (delta * item->GetProportion()) / m_stretchable;
1542                 }
1543
1544                 wxPoint child_pos( pt );
1545                 wxSize  child_size( width, size.y );
1546
1547                 if (item->GetFlag() & (wxEXPAND | wxSHAPED))
1548                     child_size.y = m_size.y;
1549                 else if (item->GetFlag() & wxALIGN_BOTTOM)
1550                     child_pos.y += m_size.y - size.y;
1551                 else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_VERTICAL))
1552                 // XXX wxCENTER is added for backward compatibility;
1553                 //     wxALIGN_CENTER should be used in new code
1554                     child_pos.y += (m_size.y - size.y) / 2;
1555
1556                 item->SetDimension( child_pos, child_size );
1557
1558                 pt.x += width;
1559             }
1560         }
1561
1562         node = node->GetNext();
1563     }
1564 }
1565
1566 wxSize wxBoxSizer::CalcMin()
1567 {
1568     if (m_children.GetCount() == 0)
1569         return wxSize(10,10);
1570
1571     m_stretchable = 0;
1572     m_minWidth = 0;
1573     m_minHeight = 0;
1574     m_fixedWidth = 0;
1575     m_fixedHeight = 0;
1576
1577     // precalc item minsizes and count proportions
1578     wxSizerItemList::compatibility_iterator node = m_children.GetFirst();
1579     while (node)
1580     {
1581         wxSizerItem *item = node->GetData();
1582
1583         if ( item->IsShown() )
1584         {
1585             item->CalcMin();  // result is stored in the item
1586
1587             m_stretchable += item->GetProportion();
1588         }
1589
1590         node = node->GetNext();
1591     }
1592
1593     // Total minimum size (width or height) of sizer
1594     int maxMinSize = 0;
1595
1596     node = m_children.GetFirst();
1597     while (node)
1598     {
1599         wxSizerItem *item = node->GetData();
1600
1601         if (item->IsShown() && item->GetProportion() != 0)
1602         {
1603             int stretch = item->GetProportion();
1604             wxSize size( item->GetMinSizeWithBorder() );
1605             int minSize;
1606
1607             // Integer division rounded up is (a + b - 1) / b
1608             // Round up needed in order to guarantee that all
1609             // all items will have size not less then their min size
1610             if (m_orient == wxHORIZONTAL)
1611                 minSize = ( size.x*m_stretchable + stretch - 1)/stretch;
1612             else
1613                 minSize = ( size.y*m_stretchable + stretch - 1)/stretch;
1614
1615             if (minSize > maxMinSize)
1616                 maxMinSize = minSize;
1617         }
1618         node = node->GetNext();
1619     }
1620
1621     // Calculate overall minimum size
1622     node = m_children.GetFirst();
1623     while (node)
1624     {
1625         wxSizerItem *item = node->GetData();
1626
1627         if (item->IsShown())
1628         {
1629             wxSize size( item->GetMinSizeWithBorder() );
1630             if (item->GetProportion() != 0)
1631             {
1632                 if (m_orient == wxHORIZONTAL)
1633                     size.x = (maxMinSize*item->GetProportion())/m_stretchable;
1634                 else
1635                     size.y = (maxMinSize*item->GetProportion())/m_stretchable;
1636             }
1637             else
1638             {
1639                 if (m_orient == wxVERTICAL)
1640                 {
1641                     m_fixedHeight += size.y;
1642                     m_fixedWidth = wxMax( m_fixedWidth, size.x );
1643                 }
1644                 else
1645                 {
1646                     m_fixedWidth += size.x;
1647                     m_fixedHeight = wxMax( m_fixedHeight, size.y );
1648                 }
1649             }
1650
1651             if (m_orient == wxHORIZONTAL)
1652             {
1653                 m_minWidth += size.x;
1654                 m_minHeight = wxMax( m_minHeight, size.y );
1655             }
1656             else
1657             {
1658                 m_minHeight += size.y;
1659                 m_minWidth = wxMax( m_minWidth, size.x );
1660             }
1661         }
1662         node = node->GetNext();
1663     }
1664
1665     return wxSize( m_minWidth, m_minHeight );
1666 }
1667
1668 //---------------------------------------------------------------------------
1669 // wxStaticBoxSizer
1670 //---------------------------------------------------------------------------
1671
1672 #if wxUSE_STATBOX
1673
1674 wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )
1675     : wxBoxSizer( orient )
1676     , m_staticBox( box )
1677 {
1678     wxASSERT_MSG( box, wxT("wxStaticBoxSizer needs a static box") );
1679 }
1680
1681 wxStaticBoxSizer::wxStaticBoxSizer(int orient, wxWindow *win, const wxString& s)
1682                 : wxBoxSizer(orient),
1683                   m_staticBox(new wxStaticBox(win, wxID_ANY, s))
1684 {
1685 }
1686
1687 static void GetStaticBoxBorders( wxStaticBox *box,
1688                                  int *borderTop,
1689                                  int *borderOther)
1690 {
1691     // this has to be done platform by platform as there is no way to
1692     // guess the thickness of a wxStaticBox border
1693     box->GetBordersForSizer(borderTop, borderOther);
1694 }
1695
1696 void wxStaticBoxSizer::RecalcSizes()
1697 {
1698     int top_border, other_border;
1699     GetStaticBoxBorders(m_staticBox, &top_border, &other_border);
1700
1701     m_staticBox->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
1702
1703     wxPoint old_pos( m_position );
1704     m_position.x += other_border;
1705     m_position.y += top_border;
1706     wxSize old_size( m_size );
1707     m_size.x -= 2*other_border;
1708     m_size.y -= top_border + other_border;
1709
1710     wxBoxSizer::RecalcSizes();
1711
1712     m_position = old_pos;
1713     m_size = old_size;
1714 }
1715
1716 wxSize wxStaticBoxSizer::CalcMin()
1717 {
1718     int top_border, other_border;
1719     GetStaticBoxBorders(m_staticBox, &top_border, &other_border);
1720
1721     wxSize ret( wxBoxSizer::CalcMin() );
1722     ret.x += 2*other_border;
1723     ret.y += other_border + top_border;
1724
1725     return ret;
1726 }
1727
1728 void wxStaticBoxSizer::ShowItems( bool show )
1729 {
1730     m_staticBox->Show( show );
1731     wxBoxSizer::ShowItems( show );
1732 }
1733
1734 #endif // wxUSE_STATBOX
1735
1736 #if wxUSE_BUTTON
1737
1738 wxStdDialogButtonSizer::wxStdDialogButtonSizer()
1739     : wxBoxSizer(wxHORIZONTAL)
1740 {
1741     // Vertical buttons with lots of space on either side
1742     // looks rubbish on WinCE, so let's not do this for now.
1743     // If we are going to use vertical buttons, we should
1744     // put the sizer to the right of other controls in the dialog,
1745     // and that's beyond the scope of this sizer.
1746 #ifndef __WXWINCE__
1747     bool is_pda = (wxSystemSettings::GetScreenType() <= wxSYS_SCREEN_PDA);
1748     // If we have a PDA screen, put yes/no button over
1749     // all other buttons, otherwise on the left side.
1750     if (is_pda)
1751         m_orient = wxVERTICAL;
1752 #endif
1753
1754     m_buttonAffirmative = NULL;
1755     m_buttonApply = NULL;
1756     m_buttonNegative = NULL;
1757     m_buttonCancel = NULL;
1758     m_buttonHelp = NULL;
1759 }
1760
1761 void wxStdDialogButtonSizer::AddButton(wxButton *mybutton)
1762 {
1763     switch (mybutton->GetId())
1764     {
1765         case wxID_OK:
1766         case wxID_YES:
1767         case wxID_SAVE:
1768             m_buttonAffirmative = mybutton;
1769             break;
1770         case wxID_APPLY:
1771             m_buttonApply = mybutton;
1772             break;
1773         case wxID_NO:
1774             m_buttonNegative = mybutton;
1775             break;
1776         case wxID_CANCEL:
1777             m_buttonCancel = mybutton;
1778             break;
1779         case wxID_HELP:
1780         case wxID_CONTEXT_HELP:
1781             m_buttonHelp = mybutton;
1782             break;
1783         default:
1784             break;
1785     }
1786 }
1787
1788 void wxStdDialogButtonSizer::SetAffirmativeButton( wxButton *button )
1789 {
1790     m_buttonAffirmative = button;
1791 }
1792
1793 void wxStdDialogButtonSizer::SetNegativeButton( wxButton *button )
1794 {
1795     m_buttonNegative = button;
1796 }
1797
1798 void wxStdDialogButtonSizer::SetCancelButton( wxButton *button )
1799 {
1800     m_buttonCancel = button;
1801 }
1802
1803 void wxStdDialogButtonSizer::Realize()
1804 {
1805 #ifdef __WXMAC__
1806         Add(0, 0, 0, wxLEFT, 6);
1807         if (m_buttonHelp)
1808             Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 6);
1809
1810         if (m_buttonNegative){
1811             // HIG POLICE BULLETIN - destructive buttons need extra padding
1812             // 24 pixels on either side
1813             Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 12);
1814         }
1815
1816         // extra whitespace between help/negative and cancel/ok buttons
1817         Add(0, 0, 1, wxEXPAND, 0);
1818
1819         if (m_buttonCancel){
1820             Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 6);
1821             // Cancel or help should be default
1822             // m_buttonCancel->SetDefaultButton();
1823         }
1824
1825         // Ugh, Mac doesn't really have apply dialogs, so I'll just
1826         // figure the best place is between Cancel and OK
1827         if (m_buttonApply)
1828             Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 6);
1829
1830         if (m_buttonAffirmative){
1831             Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT, 6);
1832
1833             if (m_buttonAffirmative->GetId() == wxID_SAVE){
1834                 // these buttons have set labels under Mac so we should use them
1835                 m_buttonAffirmative->SetLabel(_("Save"));
1836                 m_buttonNegative->SetLabel(_("Don't Save"));
1837             }
1838         }
1839
1840         // Extra space around and at the right
1841         Add(12, 24);
1842 #elif defined(__WXGTK20__)
1843         Add(0, 0, 0, wxLEFT, 9);
1844         if (m_buttonHelp)
1845             Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
1846
1847         // extra whitespace between help and cancel/ok buttons
1848         Add(0, 0, 1, wxEXPAND, 0);
1849
1850         if (m_buttonNegative){
1851             Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
1852         }
1853
1854         if (m_buttonCancel){
1855             Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
1856             // Cancel or help should be default
1857             // m_buttonCancel->SetDefaultButton();
1858         }
1859
1860         if (m_buttonApply)
1861             Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, 3);
1862
1863         if (m_buttonAffirmative)
1864             Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT, 6);
1865 #else
1866     // do the same thing for GTK1 and Windows platforms
1867     // and assume any platform not accounted for here will use
1868     // Windows style
1869         // Add(0, 0, 0, wxLEFT, 5); // Not sure what this was for but it unbalances the dialog
1870         if (m_buttonHelp)
1871             Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonHelp->ConvertDialogToPixels(wxSize(4, 0)).x);
1872
1873         // extra whitespace between help and cancel/ok buttons
1874         Add(0, 0, 1, wxEXPAND, 0);
1875
1876         if (m_buttonApply)
1877             Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonApply->ConvertDialogToPixels(wxSize(4, 0)).x);
1878
1879         if (m_buttonAffirmative){
1880             Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonAffirmative->ConvertDialogToPixels(wxSize(4, 0)).x);
1881         }
1882
1883         if (m_buttonNegative){
1884             Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonNegative->ConvertDialogToPixels(wxSize(4, 0)).x);
1885         }
1886
1887         if (m_buttonCancel){
1888             Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonCancel->ConvertDialogToPixels(wxSize(4, 0)).x);
1889             // Cancel or help should be default
1890             // m_buttonCancel->SetDefaultButton();
1891         }
1892
1893 #endif
1894 }
1895
1896 #endif // wxUSE_BUTTON
1897
1898 #if WXWIN_COMPATIBILITY_2_4
1899
1900 // ----------------------------------------------------------------------------
1901 // wxNotebookSizer
1902 // ----------------------------------------------------------------------------
1903
1904 #if wxUSE_BOOKCTRL
1905 IMPLEMENT_CLASS(wxBookCtrlSizer, wxSizer)
1906 #if wxUSE_NOTEBOOK
1907 IMPLEMENT_CLASS(wxNotebookSizer, wxBookCtrlSizer)
1908 #endif // wxUSE_NOTEBOOK
1909 #endif // wxUSE_BOOKCTRL
1910
1911 #if wxUSE_BOOKCTRL
1912
1913 wxBookCtrlSizer::wxBookCtrlSizer(wxBookCtrlBase *bookctrl)
1914                : m_bookctrl(bookctrl)
1915 {
1916     wxASSERT_MSG( bookctrl, wxT("wxBookCtrlSizer needs a control") );
1917 }
1918
1919 void wxBookCtrlSizer::RecalcSizes()
1920 {
1921     m_bookctrl->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
1922 }
1923
1924 wxSize wxBookCtrlSizer::CalcMin()
1925 {
1926     wxSize sizeBorder = m_bookctrl->CalcSizeFromPage(wxSize(0,0));
1927
1928     sizeBorder.x += 5;
1929     sizeBorder.y += 5;
1930
1931     if ( m_bookctrl->GetPageCount() == 0 )
1932     {
1933         return wxSize(sizeBorder.x + 10, sizeBorder.y + 10);
1934     }
1935
1936     int maxX = 0;
1937     int maxY = 0;
1938
1939     wxWindowList::compatibility_iterator
1940         node = m_bookctrl->GetChildren().GetFirst();
1941     while (node)
1942     {
1943         wxWindow *item = node->GetData();
1944         wxSizer *itemsizer = item->GetSizer();
1945
1946         if (itemsizer)
1947         {
1948             wxSize subsize( itemsizer->CalcMin() );
1949
1950             if (subsize.x > maxX)
1951                 maxX = subsize.x;
1952             if (subsize.y > maxY)
1953                 maxY = subsize.y;
1954         }
1955
1956         node = node->GetNext();
1957     }
1958
1959     return wxSize( maxX, maxY ) + sizeBorder;
1960 }
1961
1962 #if wxUSE_NOTEBOOK
1963
1964 wxNotebookSizer::wxNotebookSizer(wxNotebook *nb)
1965 {
1966     wxASSERT_MSG( nb, wxT("wxNotebookSizer needs a control") );
1967     m_bookctrl = nb;
1968 }
1969
1970 #endif // wxUSE_NOTEBOOOK
1971 #endif // wxUSE_BOOKCTRL
1972
1973 #endif // WXWIN_COMPATIBILITY_2_4