src/common/sizer.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        sizer.cpp
   3 // Purpose:     provide new wxSizer class for layout
   4 // Author:      Robert Roebling and Robin Dunn
   5 // Modified by:
   6 // Created:
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robin Dunn, Dirk Holtwick and Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "sizer.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #include "wx/sizer.h"
  24 #include "wx/utils.h"
  25 #include "wx/statbox.h"
  26 #include "wx/notebook.h"
  27
  28 //---------------------------------------------------------------------------
  29
  30 IMPLEMENT_ABSTRACT_CLASS(wxSizerItem, wxObject)
  31 IMPLEMENT_ABSTRACT_CLASS(wxSizer, wxObject)
  32 IMPLEMENT_ABSTRACT_CLASS(wxGridSizer, wxSizer)
  33 IMPLEMENT_ABSTRACT_CLASS(wxFlexGridSizer, wxGridSizer)
  34 IMPLEMENT_ABSTRACT_CLASS(wxBoxSizer, wxSizer)
  35 #if wxUSE_STATBOX
  36 IMPLEMENT_ABSTRACT_CLASS(wxStaticBoxSizer, wxBoxSizer)
  37 #endif
  38 #if wxUSE_NOTEBOOK
  39 IMPLEMENT_ABSTRACT_CLASS(wxNotebookSizer, wxSizer)
  40 #endif
  41
  42 //---------------------------------------------------------------------------
  43 // wxSizerItem
  44 //---------------------------------------------------------------------------
  45
  46 wxSizerItem::wxSizerItem( int width, int height, int option, int flag, int border, wxObject* userData )
  47 {
  48     m_window = (wxWindow *) NULL;
  49     m_sizer = (wxSizer *) NULL;
  50     m_option = option;
  51     m_border = border;
  52     m_flag = flag;
  53     m_userData = userData;
  54
  55     // minimal size is the initial size
  56     m_minSize.x = width;
  57     m_minSize.y = height;
  58
  59     SetRatio(width, height);
  60
  61     // size is set directly
  62     m_size = m_minSize;
  63 }
  64
  65 wxSizerItem::wxSizerItem( wxWindow *window, int option, int flag, int border, wxObject* userData )
  66 {
  67     m_window = window;
  68     m_sizer = (wxSizer *) NULL;
  69     m_option = option;
  70     m_border = border;
  71     m_flag = flag;
  72     m_userData = userData;
  73
  74     // minimal size is the initial size
  75     m_minSize = window->GetSize();
  76
  77     // aspect ratio calculated from initial size
  78     SetRatio(m_minSize);
  79
  80     // size is calculated later
  81     // m_size = ...
  82 }
  83
  84 wxSizerItem::wxSizerItem( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
  85 {
  86     m_window = (wxWindow *) NULL;
  87     m_sizer = sizer;
  88     m_option = option;
  89     m_border = border;
  90     m_flag = flag;
  91     m_userData = userData;
  92
  93     // minimal size is calculated later
  94     // m_minSize = ...
  95     m_ratio = 0;
  96
  97     // size is calculated later
  98     // m_size = ...
  99 }
 100
 101 wxSizerItem::~wxSizerItem()
 102 {
 103     if (m_userData)
 104         delete m_userData;
 105     if (m_sizer)
 106         delete m_sizer;
 107 }
 108
 109
 110 wxSize wxSizerItem::GetSize()
 111 {
 112     wxSize ret;
 113     if (IsSizer())
 114         ret = m_sizer->GetSize();
 115     else
 116     if (IsWindow())
 117         ret = m_window->GetSize();
 118     else ret = m_size;
 119
 120     if (m_flag & wxWEST)
 121         ret.x += m_border;
 122     if (m_flag & wxEAST)
 123         ret.x += m_border;
 124     if (m_flag & wxNORTH)
 125         ret.y += m_border;
 126     if (m_flag & wxSOUTH)
 127         ret.y += m_border;
 128
 129     return ret;
 130 }
 131
 132 wxSize wxSizerItem::CalcMin()
 133 {
 134     wxSize ret;
 135     if (IsSizer())
 136     {
 137         ret = m_sizer->GetMinSize();
 138
 139         // if we have to preserve aspect ratio _AND_ this is
 140         // the first-time calculation, consider ret to be initial size
 141         if ((m_flag & wxSHAPED) && !m_ratio)
 142             SetRatio(ret);
 143     }
 144     else
 145     {
 146         if ( IsWindow() && (m_flag & wxADJUST_MINSIZE) )
 147         {
 148             // check if the best (minimal, in fact) window size hadn't changed
 149             // by chance: this may happen for, e.g. static text if its label
 150             // changed
 151             wxSize size = m_window->GetBestSize();
 152             if ( size.x > m_minSize.x )
 153                 m_minSize.x = size.x;
 154             if ( size.y > m_minSize.y )
 155                 m_minSize.y = size.y;
 156         }
 157
 158         ret = m_minSize;
 159     }
 160
 161     if (m_flag & wxWEST)
 162         ret.x += m_border;
 163     if (m_flag & wxEAST)
 164         ret.x += m_border;
 165     if (m_flag & wxNORTH)
 166         ret.y += m_border;
 167     if (m_flag & wxSOUTH)
 168         ret.y += m_border;
 169
 170     return ret;
 171 }
 172
 173 void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
 174 {
 175     if (m_flag & wxSHAPED)
 176     {
 177         // adjust aspect ratio
 178         int rwidth = (int) (size.y * m_ratio);
 179         if (rwidth > size.x)
 180         {
 181             // fit horizontally
 182             int rheight = (int) (size.x / m_ratio);
 183             // add vertical space
 184             if (m_flag & wxALIGN_CENTER_VERTICAL)
 185                 pos.y += (size.y - rheight) / 2;
 186             else if (m_flag & wxALIGN_BOTTOM)
 187                 pos.y += (size.y - rheight);
 188             // use reduced dimensions
 189             size.y =rheight;
 190         }
 191         else if (rwidth < size.x)
 192         {
 193             // add horizontal space
 194             if (m_flag & wxALIGN_CENTER_HORIZONTAL)
 195                 pos.x += (size.x - rwidth) / 2;
 196             else if (m_flag & wxALIGN_RIGHT)
 197                 pos.x += (size.x - rwidth);
 198             size.x = rwidth;
 199         }
 200     }
 201
 202     // This is what GetPosition() returns. Since we calculate
 203     // borders afterwards, GetPosition() will be the left/top
 204     // corner of the surrounding border.
 205     m_pos = pos;
 206
 207     if (m_flag & wxWEST)
 208     {
 209         pos.x += m_border;
 210         size.x -= m_border;
 211     }
 212     if (m_flag & wxEAST)
 213     {
 214         size.x -= m_border;
 215     }
 216     if (m_flag & wxNORTH)
 217     {
 218         pos.y += m_border;
 219         size.y -= m_border;
 220     }
 221     if (m_flag & wxSOUTH)
 222     {
 223         size.y -= m_border;
 224     }
 225
 226     if (IsSizer())
 227         m_sizer->SetDimension( pos.x, pos.y, size.x, size.y );
 228
 229     if (IsWindow())
 230         m_window->SetSize( pos.x, pos.y, size.x, size.y, wxSIZE_ALLOW_MINUS_ONE );
 231
 232     m_size = size;
 233 }
 234
 235 void wxSizerItem::DeleteWindows()
 236 {
 237     if (m_window)
 238          m_window->Destroy();
 239
 240     if (m_sizer)
 241         m_sizer->DeleteWindows();
 242 }
 243
 244 bool wxSizerItem::IsWindow()
 245 {
 246     return (m_window != NULL);
 247 }
 248
 249 bool wxSizerItem::IsSizer()
 250 {
 251     return (m_sizer != NULL);
 252 }
 253
 254 bool wxSizerItem::IsSpacer()
 255 {
 256     return (m_window == NULL) && (m_sizer == NULL);
 257 }
 258
 259 //---------------------------------------------------------------------------
 260 // wxSizer
 261 //---------------------------------------------------------------------------
 262
 263 wxSizer::wxSizer()
 264 {
 265     m_children.DeleteContents( TRUE );
 266     m_minSize.x = 0;
 267     m_minSize.y = 0;
 268 }
 269
 270 wxSizer::~wxSizer()
 271 {
 272     Clear();
 273 }
 274
 275 void wxSizer::Add( wxWindow *window, int option, int flag, int border, wxObject* userData )
 276 {
 277     m_children.Append( new wxSizerItem( window, option, flag, border, userData ) );
 278     window->SetContainingSizer(this);
 279 }
 280
 281 void wxSizer::Add( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 282 {
 283     m_children.Append( new wxSizerItem( sizer, option, flag, border, userData ) );
 284 }
 285
 286 void wxSizer::Add( int width, int height, int option, int flag, int border, wxObject* userData )
 287 {
 288     m_children.Append( new wxSizerItem( width, height, option, flag, border, userData ) );
 289 }
 290
 291 void wxSizer::Prepend( wxWindow *window, int option, int flag, int border, wxObject* userData )
 292 {
 293     m_children.Insert( new wxSizerItem( window, option, flag, border, userData ) );
 294     window->SetContainingSizer(this);
 295 }
 296
 297 void wxSizer::Prepend( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 298 {
 299     m_children.Insert( new wxSizerItem( sizer, option, flag, border, userData ) );
 300 }
 301
 302 void wxSizer::Prepend( int width, int height, int option, int flag, int border, wxObject* userData )
 303 {
 304     m_children.Insert( new wxSizerItem( width, height, option, flag, border, userData ) );
 305 }
 306
 307 void wxSizer::Insert( int before, wxWindow *window, int option, int flag, int border, wxObject* userData )
 308 {
 309     m_children.Insert( before, new wxSizerItem( window, option, flag, border, userData ) );
 310     window->SetContainingSizer(this);
 311 }
 312
 313 void wxSizer::Insert( int before, wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 314 {
 315     m_children.Insert( before, new wxSizerItem( sizer, option, flag, border, userData ) );
 316 }
 317
 318 void wxSizer::Insert( int before, int width, int height, int option, int flag, int border, wxObject* userData )
 319 {
 320     m_children.Insert( before, new wxSizerItem( width, height, option, flag, border, userData ) );
 321 }
 322
 323 bool wxSizer::Remove( wxWindow *window )
 324 {
 325     wxASSERT( window );
 326
 327     wxNode *node = m_children.First();
 328     while (node)
 329     {
 330         wxSizerItem *item = (wxSizerItem*)node->Data();
 331         if (item->GetWindow() == window)
 332         {
 333             item->GetWindow()->SetContainingSizer(NULL);
 334             m_children.DeleteNode( node );
 335             return TRUE;
 336         }
 337         node = node->Next();
 338     }
 339
 340     return FALSE;
 341 }
 342
 343 bool wxSizer::Remove( wxSizer *sizer )
 344 {
 345     wxASSERT( sizer );
 346
 347     wxNode *node = m_children.First();
 348     while (node)
 349     {
 350         wxSizerItem *item = (wxSizerItem*)node->Data();
 351         if (item->GetSizer() == sizer)
 352         {
 353             m_children.DeleteNode( node );
 354             return TRUE;
 355         }
 356         node = node->Next();
 357     }
 358
 359     return FALSE;
 360 }
 361
 362 bool wxSizer::Remove( int pos )
 363 {
 364     wxNode *node = m_children.Nth( pos );
 365     if (!node) return FALSE;
 366
 367     m_children.DeleteNode( node );
 368
 369     return TRUE;
 370 }
 371
 372 void wxSizer::Clear( bool delete_windows )
 373 {
 374     // First clear the ContainingSizer pointers
 375     wxNode *node = m_children.First();
 376     while (node)
 377     {
 378         wxSizerItem *item = (wxSizerItem*)node->Data();
 379         if (item->IsWindow())
 380             item->GetWindow()->SetContainingSizer(NULL);
 381         node = node->Next();
 382     }
 383
 384     // Destroy the windows if needed
 385     if (delete_windows)
 386         DeleteWindows();
 387
 388     // Now empty the list
 389     m_children.Clear();
 390 }
 391
 392 void wxSizer::DeleteWindows()
 393 {
 394     wxNode *node = m_children.First();
 395     while (node)
 396     {
 397         wxSizerItem *item = (wxSizerItem*)node->Data();
 398         item->DeleteWindows();
 399         node = node->Next();
 400     }
 401 }
 402
 403 void wxSizer::Fit( wxWindow *window )
 404 {
 405     wxSize size;
 406     if (window->IsTopLevel())
 407         size = FitSize( window );
 408     else
 409         size = GetMinWindowSize( window );
 410
 411     //window->SetClientSize( size );
 412     window->SetSize( size );
 413 }
 414
 415 void wxSizer::Layout()
 416 {
 417     CalcMin();
 418     RecalcSizes();
 419 }
 420
 421 void wxSizer::SetSizeHints( wxWindow *window )
 422 {
 423     // Preserve the window's max size hints, but set the
 424     // lower bound according to the sizer calculations.
 425
 426     wxSize size = FitSize( window );
 427     window->SetSizeHints( size.x,
 428                           size.y,
 429                           window->GetMaxWidth(),
 430                           window->GetMaxHeight() );
 431 }
 432
 433 wxSize wxSizer::GetMaxWindowSize( wxWindow *window )
 434 {
 435     return window->GetMaxSize();
 436 }
 437
 438 wxSize wxSizer::GetMinWindowSize( wxWindow *window )
 439 {
 440     wxSize minSize( GetMinSize() );
 441     wxSize size( window->GetSize() );
 442     wxSize client_size( window->GetClientSize() );
 443     return wxSize( minSize.x+size.x-client_size.x,
 444                    minSize.y+size.y-client_size.y );
 445 }
 446
 447 // Return a window size that will fit within the screens dimensions
 448 wxSize wxSizer::FitSize( wxWindow *window )
 449 {
 450     wxSize size     = GetMinWindowSize( window );
 451     wxSize sizeMax  = GetMaxWindowSize( window );
 452
 453     // Limit the size if sizeMax != wxDefaultSize
 454
 455     if ( size.x > sizeMax.x && sizeMax.x != -1 )
 456         size.x = sizeMax.x;
 457     if ( size.y > sizeMax.y && sizeMax.y != -1 )
 458         size.y = sizeMax.y;
 459
 460     return size;
 461 }
 462
 463 void wxSizer::SetDimension( int x, int y, int width, int height )
 464 {
 465     m_position.x = x;
 466     m_position.y = y;
 467     m_size.x = width;
 468     m_size.y = height;
 469     CalcMin();
 470     RecalcSizes();
 471 }
 472
 473 wxSize wxSizer::GetMinSize()
 474 {
 475     wxSize ret( CalcMin() );
 476     if (ret.x < m_minSize.x) ret.x = m_minSize.x;
 477     if (ret.y < m_minSize.y) ret.y = m_minSize.y;
 478     return ret;
 479 }
 480
 481 void wxSizer::DoSetMinSize( int width, int height )
 482 {
 483     m_minSize.x = width;
 484     m_minSize.y = height;
 485 }
 486
 487 bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height )
 488 {
 489     wxASSERT( window );
 490
 491     wxNode *node = m_children.First();
 492     while (node)
 493     {
 494         wxSizerItem *item = (wxSizerItem*)node->Data();
 495         if (item->GetWindow() == window)
 496         {
 497             item->SetInitSize( width, height );
 498             return TRUE;
 499         }
 500         node = node->Next();
 501     }
 502
 503     node = m_children.First();
 504     while (node)
 505     {
 506         wxSizerItem *item = (wxSizerItem*)node->Data();
 507         if (item->GetSizer())
 508         {
 509             /* It's a sizer, so lets search recursively. */
 510             if (item->GetSizer()->DoSetItemMinSize( window, width, height ))
 511             {
 512                 /* A child sizer found the requested windw, exit. */
 513                 return TRUE;
 514             }
 515         }
 516         node = node->Next();
 517     }
 518
 519     return FALSE;
 520 }
 521
 522 bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height )
 523 {
 524     wxASSERT( sizer );
 525
 526     wxNode *node = m_children.First();
 527     while (node)
 528     {
 529         wxSizerItem *item = (wxSizerItem*)node->Data();
 530         if (item->GetSizer() == sizer)
 531         {
 532             item->GetSizer()->DoSetMinSize( width, height );
 533             return TRUE;
 534         }
 535         node = node->Next();
 536     }
 537
 538     node = m_children.First();
 539     while (node)
 540     {
 541         wxSizerItem *item = (wxSizerItem*)node->Data();
 542         if (item->GetSizer())
 543         {
 544             /* It's a sizer, so lets search recursively. */
 545             if (item->GetSizer()->DoSetItemMinSize( sizer, width, height ))
 546             {
 547                 /* A child sizer found the requested windw, exit. */
 548                 return TRUE;
 549             }
 550         }
 551         node = node->Next();
 552     }
 553
 554     return FALSE;
 555 }
 556
 557 bool wxSizer::DoSetItemMinSize( int pos, int width, int height )
 558 {
 559     wxNode *node = m_children.Nth( pos );
 560     if (!node) return FALSE;
 561
 562     wxSizerItem *item = (wxSizerItem*) node->Data();
 563     if (item->GetSizer())
 564     {
 565         /* Sizers contains the minimal size in them, if not calculated ... */
 566         item->GetSizer()->DoSetMinSize( width, height );
 567     }
 568     else
 569     {
 570         /* ... whereas the minimal size of spacers and windows in stored
 571            in the item */
 572         item->SetInitSize( width, height );
 573     }
 574
 575     return TRUE;
 576 }
 577
 578 //---------------------------------------------------------------------------
 579 // wxGridSizer
 580 //---------------------------------------------------------------------------
 581
 582 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
 583 {
 584     m_rows = rows;
 585     m_cols = cols;
 586     m_vgap = vgap;
 587     m_hgap = hgap;
 588 }
 589
 590 wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
 591 {
 592     m_rows = 0;
 593     m_cols = cols;
 594     m_vgap = vgap;
 595     m_hgap = hgap;
 596 }
 597
 598 void wxGridSizer::RecalcSizes()
 599 {
 600     if (m_children.GetCount() == 0)
 601         return;
 602
 603     int nitems = m_children.GetCount();
 604     int nrows = m_rows;
 605     int ncols = m_cols;
 606
 607     if (ncols > 0)
 608         nrows = (nitems + ncols-1) / ncols;
 609     else
 610         ncols = (nitems + nrows-1) / nrows;
 611
 612     wxSize sz( GetSize() );
 613     wxPoint pt( GetPosition() );
 614
 615     int w = (sz.x - (ncols - 1) * m_hgap) / ncols;
 616     int h = (sz.y - (nrows - 1) * m_vgap) / nrows;
 617
 618     int x = pt.x;
 619     for (int c = 0; c < ncols; c++)
 620     {
 621         int y = pt.y;
 622         for (int r = 0; r < nrows; r++)
 623         {
 624             int i = r * ncols + c;
 625             if (i < nitems)
 626             {
 627                 wxNode *node = m_children.Nth( i );
 628                 wxASSERT( node );
 629
 630                 SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
 631             }
 632             y = y + h + m_vgap;
 633         }
 634         x = x + w + m_hgap;
 635     }
 636 }
 637
 638 wxSize wxGridSizer::CalcMin()
 639 {
 640     if (m_children.GetCount() == 0)
 641         return wxSize(10,10);
 642
 643     int nitems = m_children.GetCount();
 644     int nrows = m_rows;
 645     int ncols = m_cols;
 646
 647     if (ncols > 0)
 648         nrows = (nitems + ncols-1) / ncols;
 649     else
 650         ncols = (nitems + nrows-1) / nrows;
 651
 652     /* Find the max width and height for any component */
 653     int w = 0;
 654     int h = 0;
 655
 656     wxNode *node = m_children.First();
 657     while (node)
 658     {
 659         wxSizerItem *item = (wxSizerItem*)node->Data();
 660         wxSize sz( item->CalcMin() );
 661         w = wxMax( w, sz.x );
 662         h = wxMax( h, sz.y );
 663
 664         node = node->Next();
 665     }
 666
 667     return wxSize(ncols * w + (ncols-1) * m_hgap,
 668                   nrows * h + (nrows-1) * m_vgap);
 669 }
 670
 671 void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
 672 {
 673     wxPoint pt( x,y );
 674     wxSize sz( item->CalcMin() );
 675     int flag = item->GetFlag();
 676
 677     if ((flag & wxEXPAND) || (flag & wxSHAPED))
 678     {
 679        sz = wxSize(w, h);
 680     }
 681     else
 682     {
 683         if (flag & wxALIGN_CENTER_HORIZONTAL)
 684         {
 685             pt.x = x + (w - sz.x) / 2;
 686         }
 687         else if (flag & wxALIGN_RIGHT)
 688         {
 689             pt.x = x + (w - sz.x);
 690         }
 691
 692         if (flag & wxALIGN_CENTER_VERTICAL)
 693         {
 694             pt.y = y + (h - sz.y) / 2;
 695         }
 696         else if (flag & wxALIGN_BOTTOM)
 697         {
 698             pt.y = y + (h - sz.y);
 699         }
 700     }
 701
 702     item->SetDimension(pt, sz);
 703 }
 704
 705 //---------------------------------------------------------------------------
 706 // wxFlexGridSizer
 707 //---------------------------------------------------------------------------
 708
 709 wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap )
 710    : wxGridSizer( rows, cols, vgap, hgap )
 711 {
 712     m_rowHeights = (int*) NULL;
 713     m_colWidths = (int*) NULL;
 714 }
 715
 716 wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap )
 717    : wxGridSizer( cols, vgap, hgap )
 718 {
 719     m_rowHeights = (int*) NULL;
 720     m_colWidths = (int*) NULL;
 721 }
 722
 723 wxFlexGridSizer::~wxFlexGridSizer()
 724 {
 725     if (m_rowHeights)
 726         delete[] m_rowHeights;
 727     if (m_colWidths)
 728         delete[] m_colWidths;
 729 }
 730
 731 void wxFlexGridSizer::CreateArrays()
 732 {
 733     if (m_rowHeights)
 734         delete[] m_rowHeights;
 735     if (m_colWidths)
 736         delete[] m_colWidths;
 737
 738     if (m_children.GetCount() == 0)
 739         return;
 740
 741     int nitems = m_children.GetCount();
 742     int nrows = m_rows;
 743     int ncols = m_cols;
 744
 745     if (ncols > 0)
 746         nrows = (nitems + ncols-1) / ncols;
 747     else
 748         ncols = (nitems + nrows-1) / nrows;
 749
 750     m_rowHeights = new int[nrows];
 751     m_colWidths = new int[ncols];
 752
 753     for (int col = 0; col < ncols; col++)
 754         m_colWidths[ col ] = 0;
 755     for (int row = 0; row < nrows; row++)
 756         m_rowHeights[ row ] = 0;
 757 }
 758
 759 void wxFlexGridSizer::RecalcSizes()
 760 {
 761     if (m_children.GetCount() == 0)
 762         return;
 763
 764     int nitems = m_children.GetCount();
 765     int nrows = m_rows;
 766     int ncols = m_cols;
 767
 768     if (ncols > 0)
 769         nrows = (nitems + ncols-1) / ncols;
 770     else
 771         ncols = (nitems + nrows-1) / nrows;
 772
 773     wxSize sz( GetSize() );
 774     wxSize minsz( CalcMin() );
 775     wxPoint pt( GetPosition() );
 776     int    delta;
 777     size_t idx;
 778
 779     if ((m_growableRows.GetCount() > 0) && (sz.y > minsz.y))
 780     {
 781         delta = (sz.y - minsz.y) / m_growableRows.GetCount();
 782         for (idx = 0; idx < m_growableRows.GetCount(); idx++)
 783             m_rowHeights[ m_growableRows[idx] ] += delta;
 784     }
 785
 786     if ((m_growableCols.GetCount() > 0) && (sz.x > minsz.x))
 787     {
 788         delta = (sz.x - minsz.x) / m_growableCols.GetCount();
 789         for (idx = 0; idx < m_growableCols.GetCount(); idx++)
 790             m_colWidths[ m_growableCols[idx] ] += delta;
 791     }
 792
 793     sz = wxSize( pt.x + sz.x, pt.y + sz.y );
 794
 795     int x = pt.x;
 796     for (int c = 0; c < ncols; c++)
 797     {
 798         int y = pt.y;
 799         for (int r = 0; r < nrows; r++)
 800         {
 801             int i = r * ncols + c;
 802             if (i < nitems)
 803             {
 804                 wxNode *node = m_children.Nth( i );
 805                 wxASSERT( node );
 806
 807                 int w = wxMax( 0, wxMin( m_colWidths[c], sz.x - x ) );
 808                 int h = wxMax( 0, wxMin( m_rowHeights[r], sz.y - y ) );
 809
 810                 SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
 811             }
 812             y = y + m_rowHeights[r] + m_vgap;
 813         }
 814         x = x + m_colWidths[c] + m_hgap;
 815     }
 816 }
 817
 818 wxSize wxFlexGridSizer::CalcMin()
 819 {
 820     if (m_children.GetCount() == 0)
 821         return wxSize(10,10);
 822
 823     int nitems = m_children.GetCount();
 824     int nrows = m_rows;
 825     int ncols = m_cols;
 826
 827     if (ncols > 0)
 828         nrows = (nitems + ncols-1) / ncols;
 829     else
 830         ncols = (nitems + nrows-1) / nrows;
 831
 832     CreateArrays();
 833
 834     int col;
 835     int row;
 836
 837     int i = 0;
 838     wxNode *node = m_children.First();
 839     while (node)
 840     {
 841         wxSizerItem *item = (wxSizerItem*)node->Data();
 842         wxSize sz( item->CalcMin() );
 843         row = i / ncols;
 844         col = i % ncols;
 845         m_rowHeights[ row ] = wxMax( sz.y, m_rowHeights[ row ] );
 846         m_colWidths[ col ] = wxMax( sz.x, m_colWidths[ col ] );
 847
 848         node = node->Next();
 849         i++;
 850     }
 851
 852     int width = 0;
 853     for (col = 0; col < ncols; col++)
 854         width += m_colWidths[ col ];
 855
 856     int height = 0;
 857     for (row = 0; row < nrows; row++)
 858         height += m_rowHeights[ row ];
 859
 860     return wxSize( width +  (ncols-1) * m_hgap,
 861                    height + (nrows-1) * m_vgap);
 862 }
 863
 864 void wxFlexGridSizer::AddGrowableRow( size_t idx )
 865 {
 866     m_growableRows.Add( idx );
 867 }
 868
 869 void wxFlexGridSizer::RemoveGrowableRow( size_t WXUNUSED(idx) )
 870 {
 871 }
 872
 873 void wxFlexGridSizer::AddGrowableCol( size_t idx )
 874 {
 875     m_growableCols.Add( idx );
 876 }
 877
 878 void wxFlexGridSizer::RemoveGrowableCol( size_t WXUNUSED(idx) )
 879 {
 880 }
 881
 882 //---------------------------------------------------------------------------
 883 // wxBoxSizer
 884 //---------------------------------------------------------------------------
 885
 886 wxBoxSizer::wxBoxSizer( int orient )
 887 {
 888     m_orient = orient;
 889 }
 890
 891 void wxBoxSizer::RecalcSizes()
 892 {
 893     if (m_children.GetCount() == 0)
 894         return;
 895
 896     int delta = 0;
 897     int extra = 0;
 898     if (m_stretchable)
 899     {
 900         if (m_orient == wxHORIZONTAL)
 901         {
 902             delta = (m_size.x - m_fixedWidth) / m_stretchable;
 903             extra = (m_size.x - m_fixedWidth) % m_stretchable;
 904         }
 905         else
 906         {
 907             delta = (m_size.y - m_fixedHeight) / m_stretchable;
 908             extra = (m_size.y - m_fixedHeight) % m_stretchable;
 909         }
 910     }
 911
 912     wxPoint pt( m_position );
 913
 914     wxNode *node = m_children.GetFirst();
 915     while (node)
 916     {
 917         wxSizerItem *item = (wxSizerItem*) node->Data();
 918
 919         int weight = 1;
 920         if (item->GetOption())
 921             weight = item->GetOption();
 922
 923         wxSize size( item->CalcMin() );
 924
 925         if (m_orient == wxVERTICAL)
 926         {
 927             wxCoord height = size.y;
 928             if (item->GetOption())
 929             {
 930                 height = (delta * weight) + extra;
 931                 extra = 0; // only the first item will get the remainder as extra size
 932             }
 933
 934             wxPoint child_pos( pt );
 935             wxSize  child_size( wxSize( size.x, height) );
 936
 937             if (item->GetFlag() & (wxEXPAND | wxSHAPED))
 938                 child_size.x = m_size.x;
 939             else if (item->GetFlag() & wxALIGN_RIGHT)
 940                 child_pos.x += m_size.x - size.x;
 941             else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_HORIZONTAL))
 942             // XXX wxCENTER is added for backward compatibility;
 943             //     wxALIGN_CENTER should be used in new code
 944                 child_pos.x += (m_size.x - size.x) / 2;
 945
 946             item->SetDimension( child_pos, child_size );
 947
 948             pt.y += height;
 949         }
 950         else
 951         {
 952             wxCoord width = size.x;
 953             if (item->GetOption())
 954             {
 955                 width = (delta * weight) + extra;
 956                 extra = 0; // only the first item will get the remainder as extra size
 957             }
 958
 959             wxPoint child_pos( pt );
 960             wxSize  child_size( wxSize(width, size.y) );
 961
 962             if (item->GetFlag() & (wxEXPAND | wxSHAPED))
 963                 child_size.y = m_size.y;
 964             else if (item->GetFlag() & wxALIGN_BOTTOM)
 965                 child_pos.y += m_size.y - size.y;
 966             else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_VERTICAL))
 967             // XXX wxCENTER is added for backward compatibility;
 968             //     wxALIGN_CENTER should be used in new code
 969                 child_pos.y += (m_size.y - size.y) / 2;
 970
 971             item->SetDimension( child_pos, child_size );
 972
 973             pt.x += width;
 974         }
 975
 976         node = node->Next();
 977     }
 978 }
 979
 980 wxSize wxBoxSizer::CalcMin()
 981 {
 982     if (m_children.GetCount() == 0)
 983         return wxSize(10,10);
 984
 985     m_stretchable = 0;
 986     m_minWidth = 0;
 987     m_minHeight = 0;
 988     m_fixedWidth = 0;
 989     m_fixedHeight = 0;
 990
 991     // Find how long each stretch unit needs to be
 992     int stretchSize = 1;
 993     wxNode *node = m_children.GetFirst();
 994     while (node)
 995     {
 996         wxSizerItem *item = (wxSizerItem*) node->Data();
 997         if (item->GetOption() != 0)
 998         {
 999             int stretch = item->GetOption();
1000             wxSize size( item->CalcMin() );
1001             int sizePerStretch;
1002             // Integer division rounded up is (a + b - 1) / b
1003             if (m_orient == wxHORIZONTAL)
1004                 sizePerStretch = ( size.x + stretch - 1 ) / stretch;
1005             else
1006                 sizePerStretch = ( size.y + stretch - 1 ) / stretch;
1007             if (sizePerStretch > stretchSize)
1008                 stretchSize = sizePerStretch;
1009         }
1010         node = node->Next();
1011     }
1012         // Calculate overall minimum size
1013         node = m_children.GetFirst();
1014     while (node)
1015     {
1016         wxSizerItem *item = (wxSizerItem*) node->Data();
1017
1018         m_stretchable += item->GetOption();
1019
1020         wxSize size( item->CalcMin() );
1021         if (item->GetOption() != 0)
1022         {
1023             if (m_orient == wxHORIZONTAL)
1024                 size.x = stretchSize * item->GetOption();
1025             else
1026                 size.y = stretchSize * item->GetOption();
1027         }
1028
1029         if (m_orient == wxHORIZONTAL)
1030         {
1031             m_minWidth += size.x;
1032             m_minHeight = wxMax( m_minHeight, size.y );
1033         }
1034         else
1035         {
1036             m_minHeight += size.y;
1037             m_minWidth = wxMax( m_minWidth, size.x );
1038         }
1039
1040         if (item->GetOption() == 0)
1041         {
1042             if (m_orient == wxVERTICAL)
1043             {
1044                 m_fixedHeight += size.y;
1045                 m_fixedWidth = wxMax( m_fixedWidth, size.x );
1046             }
1047             else
1048             {
1049                 m_fixedWidth += size.x;
1050                 m_fixedHeight = wxMax( m_fixedHeight, size.y );
1051             }
1052         }
1053
1054         node = node->Next();
1055     }
1056
1057     return wxSize( m_minWidth, m_minHeight );
1058 }
1059
1060 //---------------------------------------------------------------------------
1061 // wxStaticBoxSizer
1062 //---------------------------------------------------------------------------
1063
1064 #if wxUSE_STATBOX
1065
1066 wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )
1067                 : wxBoxSizer( orient )
1068 {
1069     wxASSERT_MSG( box, wxT("wxStaticBoxSizer needs a static box") );
1070
1071     m_staticBox = box;
1072 }
1073
1074 static void GetStaticBoxBorders(wxStaticBox *box,
1075                                 int *borderTop, int *borderOther)
1076 {
1077     // this has to be done platform by platform as there is no way to
1078     // guess the thickness of a wxStaticBox border
1079 #ifdef __WXGTK__
1080     if ( box->GetLabel().IsEmpty() )
1081         *borderTop = 5;
1082     else
1083 #endif // __WXGTK__
1084         *borderTop = 15;
1085         (void)box;
1086     *borderOther = 5;
1087 }
1088
1089 void wxStaticBoxSizer::RecalcSizes()
1090 {
1091     int top_border, other_border;
1092     GetStaticBoxBorders(m_staticBox, &top_border, &other_border);
1093
1094     m_staticBox->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
1095
1096     wxPoint old_pos( m_position );
1097     m_position.x += other_border;
1098     m_position.y += top_border;
1099     wxSize old_size( m_size );
1100     m_size.x -= 2*other_border;
1101     m_size.y -= top_border + other_border;
1102
1103     wxBoxSizer::RecalcSizes();
1104
1105     m_position = old_pos;
1106     m_size = old_size;
1107 }
1108
1109 wxSize wxStaticBoxSizer::CalcMin()
1110 {
1111     int top_border, other_border;
1112     GetStaticBoxBorders(m_staticBox, &top_border, &other_border);
1113
1114     wxSize ret( wxBoxSizer::CalcMin() );
1115     ret.x += 2*other_border;
1116     ret.y += other_border + top_border;
1117
1118     return ret;
1119 }
1120
1121 #endif // wxUSE_STATBOX
1122
1123 //---------------------------------------------------------------------------
1124 // wxNotebookSizer
1125 //---------------------------------------------------------------------------
1126
1127 #if wxUSE_NOTEBOOK
1128
1129 wxNotebookSizer::wxNotebookSizer( wxNotebook *nb )
1130 {
1131     wxASSERT_MSG( nb, wxT("wxNotebookSizer needs a notebook") );
1132
1133     m_notebook = nb;
1134 }
1135
1136 void wxNotebookSizer::RecalcSizes()
1137 {
1138     m_notebook->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
1139 }
1140
1141 wxSize wxNotebookSizer::CalcMin()
1142 {
1143     wxSize sizeBorder = m_notebook->CalcSizeFromPage(wxSize(0, 0));
1144
1145     sizeBorder.x += 5;
1146     sizeBorder.y += 5;
1147
1148     if (m_notebook->GetChildren().GetCount() == 0)
1149     {
1150         return wxSize(sizeBorder.x + 10, sizeBorder.y + 10);
1151     }
1152
1153     int maxX = 0;
1154     int maxY = 0;
1155
1156     wxWindowList::Node *node = m_notebook->GetChildren().GetFirst();
1157     while (node)
1158     {
1159         wxWindow *item = node->GetData();
1160         wxSizer *itemsizer = item->GetSizer();
1161
1162         if (itemsizer)
1163         {
1164             wxSize subsize( itemsizer->CalcMin() );
1165
1166             if (subsize.x > maxX)
1167                 maxX = subsize.x;
1168             if (subsize.y > maxY)
1169                 maxY = subsize.y;
1170         }
1171
1172         node = node->GetNext();
1173     }
1174
1175     return wxSize( maxX, maxY ) + sizeBorder;
1176 }
1177
1178 #endif // wxUSE_NOTEBOOK
1179
1180 // vi:sts=4:sw=4:et