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 bool wxSizerItem::IsWindow()
 236 {
 237     return (m_window != NULL);
 238 }
 239
 240 bool wxSizerItem::IsSizer()
 241 {
 242     return (m_sizer != NULL);
 243 }
 244
 245 bool wxSizerItem::IsSpacer()
 246 {
 247     return (m_window == NULL) && (m_sizer == NULL);
 248 }
 249
 250 //---------------------------------------------------------------------------
 251 // wxSizer
 252 //---------------------------------------------------------------------------
 253
 254 wxSizer::wxSizer()
 255 {
 256     m_children.DeleteContents( TRUE );
 257     m_minSize.x = 0;
 258     m_minSize.y = 0;
 259 }
 260
 261 wxSizer::~wxSizer()
 262 {
 263 }
 264
 265 void wxSizer::Add( wxWindow *window, int option, int flag, int border, wxObject* userData )
 266 {
 267     m_children.Append( new wxSizerItem( window, option, flag, border, userData ) );
 268 }
 269
 270 void wxSizer::Add( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 271 {
 272     m_children.Append( new wxSizerItem( sizer, option, flag, border, userData ) );
 273 }
 274
 275 void wxSizer::Add( int width, int height, int option, int flag, int border, wxObject* userData )
 276 {
 277     m_children.Append( new wxSizerItem( width, height, option, flag, border, userData ) );
 278 }
 279
 280 void wxSizer::Prepend( wxWindow *window, int option, int flag, int border, wxObject* userData )
 281 {
 282     m_children.Insert( new wxSizerItem( window, option, flag, border, userData ) );
 283 }
 284
 285 void wxSizer::Prepend( wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 286 {
 287     m_children.Insert( new wxSizerItem( sizer, option, flag, border, userData ) );
 288 }
 289
 290 void wxSizer::Prepend( int width, int height, int option, int flag, int border, wxObject* userData )
 291 {
 292     m_children.Insert( new wxSizerItem( width, height, option, flag, border, userData ) );
 293 }
 294
 295 void wxSizer::Insert( int before, wxWindow *window, int option, int flag, int border, wxObject* userData )
 296 {
 297     m_children.Insert( before, new wxSizerItem( window, option, flag, border, userData ) );
 298 }
 299
 300 void wxSizer::Insert( int before, wxSizer *sizer, int option, int flag, int border, wxObject* userData )
 301 {
 302     m_children.Insert( before, new wxSizerItem( sizer, option, flag, border, userData ) );
 303 }
 304
 305 void wxSizer::Insert( int before, int width, int height, int option, int flag, int border, wxObject* userData )
 306 {
 307     m_children.Insert( before, new wxSizerItem( width, height, option, flag, border, userData ) );
 308 }
 309
 310 bool wxSizer::Remove( wxWindow *window )
 311 {
 312     wxASSERT( window );
 313
 314     wxNode *node = m_children.First();
 315     while (node)
 316     {
 317         wxSizerItem *item = (wxSizerItem*)node->Data();
 318         if (item->GetWindow() == window)
 319         {
 320             m_children.DeleteNode( node );
 321             return TRUE;
 322         }
 323         node = node->Next();
 324     }
 325
 326     return FALSE;
 327 }
 328
 329 bool wxSizer::Remove( wxSizer *sizer )
 330 {
 331     wxASSERT( sizer );
 332
 333     wxNode *node = m_children.First();
 334     while (node)
 335     {
 336         wxSizerItem *item = (wxSizerItem*)node->Data();
 337         if (item->GetSizer() == sizer)
 338         {
 339             m_children.DeleteNode( node );
 340             return TRUE;
 341         }
 342         node = node->Next();
 343     }
 344
 345     return FALSE;
 346 }
 347
 348 bool wxSizer::Remove( int pos )
 349 {
 350     wxNode *node = m_children.Nth( pos );
 351     if (!node) return FALSE;
 352
 353     m_children.DeleteNode( node );
 354
 355     return TRUE;
 356 }
 357
 358 void wxSizer::Fit( wxWindow *window )
 359 {
 360     wxSize size;
 361     if (window->IsTopLevel())
 362         size = FitSize( window );
 363     else
 364         size = GetMinWindowSize( window );
 365
 366     window->SetSize( size );
 367 }
 368
 369 void wxSizer::Layout()
 370 {
 371     CalcMin();
 372     RecalcSizes();
 373 }
 374
 375 void wxSizer::SetSizeHints( wxWindow *window )
 376 {
 377     wxSize size = FitSize( window );
 378     window->SetSizeHints( size.x, size.y );
 379 }
 380
 381 wxSize wxSizer::GetMaxWindowSize( wxWindow *WXUNUSED(window) )
 382 {
 383     wxRect rect = wxGetClientDisplayRect();
 384     wxSize sizeMax (rect.width,rect.height);
 385
 386     // Sorry, but this bit is wrong -- it makes a window that should just be
 387     // able to fit onto the screen, not fit on the screen. -- JACS
 388 #if 0
 389     // Make the max size a bit smaller than the visible portion of
 390     // the screen.  A window which takes the entire screen doesn't
 391     // look very nice either
 392     sizeMax.x *= 9;
 393     sizeMax.x /= 10;
 394
 395     sizeMax.y *= 9;
 396     sizeMax.y /= 10;
 397 #endif
 398
 399     return sizeMax;
 400 }
 401
 402 wxSize wxSizer::GetMinWindowSize( wxWindow *window )
 403 {
 404     wxSize minSize( GetMinSize() );
 405     wxSize size( window->GetSize() );
 406     wxSize client_size( window->GetClientSize() );
 407     return wxSize( minSize.x+size.x-client_size.x,
 408                    minSize.y+size.y-client_size.y );
 409 }
 410
 411 // Return a window size that will fit within the screens dimensions
 412 wxSize wxSizer::FitSize( wxWindow *window )
 413 {
 414     wxSize size     = GetMinWindowSize( window );
 415     wxSize sizeMax  = GetMaxWindowSize( window );
 416
 417     if ( size.x > sizeMax.x )
 418         size.x = sizeMax.x;
 419     if ( size.y > sizeMax.y )
 420         size.y = sizeMax.y;
 421
 422     return size;
 423 }
 424
 425 void wxSizer::SetDimension( int x, int y, int width, int height )
 426 {
 427     m_position.x = x;
 428     m_position.y = y;
 429     m_size.x = width;
 430     m_size.y = height;
 431     CalcMin();
 432     RecalcSizes();
 433 }
 434
 435 wxSize wxSizer::GetMinSize()
 436 {
 437     wxSize ret( CalcMin() );
 438     if (ret.x < m_minSize.x) ret.x = m_minSize.x;
 439     if (ret.y < m_minSize.y) ret.y = m_minSize.y;
 440     return ret;
 441 }
 442
 443 void wxSizer::DoSetMinSize( int width, int height )
 444 {
 445     m_minSize.x = width;
 446     m_minSize.y = height;
 447 }
 448
 449 bool wxSizer::DoSetItemMinSize( wxWindow *window, int width, int height )
 450 {
 451     wxASSERT( window );
 452
 453     wxNode *node = m_children.First();
 454     while (node)
 455     {
 456         wxSizerItem *item = (wxSizerItem*)node->Data();
 457         if (item->GetWindow() == window)
 458         {
 459             item->SetInitSize( width, height );
 460             return TRUE;
 461         }
 462         node = node->Next();
 463     }
 464
 465     node = m_children.First();
 466     while (node)
 467     {
 468         wxSizerItem *item = (wxSizerItem*)node->Data();
 469         if (item->GetSizer())
 470         {
 471             /* It's a sizer, so lets search recursively. */
 472             if (item->GetSizer()->DoSetItemMinSize( window, width, height ))
 473             {
 474                 /* A child sizer found the requested windw, exit. */
 475                 return TRUE;
 476             }
 477         }
 478         node = node->Next();
 479     }
 480
 481     return FALSE;
 482 }
 483
 484 bool wxSizer::DoSetItemMinSize( wxSizer *sizer, int width, int height )
 485 {
 486     wxASSERT( sizer );
 487
 488     wxNode *node = m_children.First();
 489     while (node)
 490     {
 491         wxSizerItem *item = (wxSizerItem*)node->Data();
 492         if (item->GetSizer() == sizer)
 493         {
 494             item->GetSizer()->DoSetMinSize( width, height );
 495             return TRUE;
 496         }
 497         node = node->Next();
 498     }
 499
 500     node = m_children.First();
 501     while (node)
 502     {
 503         wxSizerItem *item = (wxSizerItem*)node->Data();
 504         if (item->GetSizer())
 505         {
 506             /* It's a sizer, so lets search recursively. */
 507             if (item->GetSizer()->DoSetItemMinSize( sizer, width, height ))
 508             {
 509                 /* A child sizer found the requested windw, exit. */
 510                 return TRUE;
 511             }
 512         }
 513         node = node->Next();
 514     }
 515
 516     return FALSE;
 517 }
 518
 519 bool wxSizer::DoSetItemMinSize( int pos, int width, int height )
 520 {
 521     wxNode *node = m_children.Nth( pos );
 522     if (!node) return FALSE;
 523
 524     wxSizerItem *item = (wxSizerItem*) node->Data();
 525     if (item->GetSizer())
 526     {
 527         /* Sizers contains the minimal size in them, if not calculated ... */
 528         item->GetSizer()->DoSetMinSize( width, height );
 529     }
 530     else
 531     {
 532         /* ... whereas the minimal size of spacers and windows in stored
 533            in the item */
 534         item->SetInitSize( width, height );
 535     }
 536
 537     return TRUE;
 538 }
 539
 540 //---------------------------------------------------------------------------
 541 // wxGridSizer
 542 //---------------------------------------------------------------------------
 543
 544 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
 545 {
 546     m_rows = rows;
 547     m_cols = cols;
 548     m_vgap = vgap;
 549     m_hgap = hgap;
 550 }
 551
 552 wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
 553 {
 554     m_rows = 0;
 555     m_cols = cols;
 556     m_vgap = vgap;
 557     m_hgap = hgap;
 558 }
 559
 560 void wxGridSizer::RecalcSizes()
 561 {
 562     if (m_children.GetCount() == 0)
 563         return;
 564
 565     int nitems = m_children.GetCount();
 566     int nrows = m_rows;
 567     int ncols = m_cols;
 568
 569     if (ncols > 0)
 570         nrows = (nitems + ncols-1) / ncols;
 571     else
 572         ncols = (nitems + nrows-1) / nrows;
 573
 574     wxSize sz( GetSize() );
 575     wxPoint pt( GetPosition() );
 576
 577     int w = (sz.x - (ncols - 1) * m_hgap) / ncols;
 578     int h = (sz.y - (nrows - 1) * m_vgap) / nrows;
 579
 580     int x = pt.x;
 581     for (int c = 0; c < ncols; c++)
 582     {
 583         int y = pt.y;
 584         for (int r = 0; r < nrows; r++)
 585         {
 586             int i = r * ncols + c;
 587             if (i < nitems)
 588             {
 589                 wxNode *node = m_children.Nth( i );
 590                 wxASSERT( node );
 591
 592                 SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
 593             }
 594             y = y + h + m_vgap;
 595         }
 596         x = x + w + m_hgap;
 597     }
 598 }
 599
 600 wxSize wxGridSizer::CalcMin()
 601 {
 602     if (m_children.GetCount() == 0)
 603         return wxSize(10,10);
 604
 605     int nitems = m_children.GetCount();
 606     int nrows = m_rows;
 607     int ncols = m_cols;
 608
 609     if (ncols > 0)
 610         nrows = (nitems + ncols-1) / ncols;
 611     else
 612         ncols = (nitems + nrows-1) / nrows;
 613
 614     /* Find the max width and height for any component */
 615     int w = 0;
 616     int h = 0;
 617
 618     wxNode *node = m_children.First();
 619     while (node)
 620     {
 621         wxSizerItem *item = (wxSizerItem*)node->Data();
 622         wxSize sz( item->CalcMin() );
 623         w = wxMax( w, sz.x );
 624         h = wxMax( h, sz.y );
 625
 626         node = node->Next();
 627     }
 628
 629     return wxSize(ncols * w + (ncols-1) * m_hgap,
 630                   nrows * h + (nrows-1) * m_vgap);
 631 }
 632
 633 void wxGridSizer::SetItemBounds( wxSizerItem *item, int x, int y, int w, int h )
 634 {
 635     wxPoint pt( x,y );
 636     wxSize sz( item->CalcMin() );
 637     int flag = item->GetFlag();
 638
 639     if ((flag & wxEXPAND) || (flag & wxSHAPED))
 640     {
 641        sz = wxSize(w, h);
 642     }
 643     else
 644     {
 645         if (flag & wxALIGN_CENTER_HORIZONTAL)
 646         {
 647             pt.x = x + (w - sz.x) / 2;
 648         }
 649         else if (flag & wxALIGN_RIGHT)
 650         {
 651             pt.x = x + (w - sz.x);
 652         }
 653
 654         if (flag & wxALIGN_CENTER_VERTICAL)
 655         {
 656             pt.y = y + (h - sz.y) / 2;
 657         }
 658         else if (flag & wxALIGN_BOTTOM)
 659         {
 660             pt.y = y + (h - sz.y);
 661         }
 662     }
 663
 664     item->SetDimension(pt, sz);
 665 }
 666
 667 //---------------------------------------------------------------------------
 668 // wxFlexGridSizer
 669 //---------------------------------------------------------------------------
 670
 671 wxFlexGridSizer::wxFlexGridSizer( int rows, int cols, int vgap, int hgap )
 672    : wxGridSizer( rows, cols, vgap, hgap )
 673 {
 674     m_rowHeights = (int*) NULL;
 675     m_colWidths = (int*) NULL;
 676 }
 677
 678 wxFlexGridSizer::wxFlexGridSizer( int cols, int vgap, int hgap )
 679    : wxGridSizer( cols, vgap, hgap )
 680 {
 681     m_rowHeights = (int*) NULL;
 682     m_colWidths = (int*) NULL;
 683 }
 684
 685 wxFlexGridSizer::~wxFlexGridSizer()
 686 {
 687     if (m_rowHeights)
 688         delete[] m_rowHeights;
 689     if (m_colWidths)
 690         delete[] m_colWidths;
 691 }
 692
 693 void wxFlexGridSizer::CreateArrays()
 694 {
 695     if (m_rowHeights)
 696         delete[] m_rowHeights;
 697     if (m_colWidths)
 698         delete[] m_colWidths;
 699
 700     if (m_children.GetCount() == 0)
 701         return;
 702
 703     int nitems = m_children.GetCount();
 704     int nrows = m_rows;
 705     int ncols = m_cols;
 706
 707     if (ncols > 0)
 708         nrows = (nitems + ncols-1) / ncols;
 709     else
 710         ncols = (nitems + nrows-1) / nrows;
 711
 712     m_rowHeights = new int[nrows];
 713     m_colWidths = new int[ncols];
 714
 715     for (int col = 0; col < ncols; col++)
 716         m_colWidths[ col ] = 0;
 717     for (int row = 0; row < nrows; row++)
 718         m_rowHeights[ row ] = 0;
 719 }
 720
 721 void wxFlexGridSizer::RecalcSizes()
 722 {
 723     if (m_children.GetCount() == 0)
 724         return;
 725
 726     int nitems = m_children.GetCount();
 727     int nrows = m_rows;
 728     int ncols = m_cols;
 729
 730     if (ncols > 0)
 731         nrows = (nitems + ncols-1) / ncols;
 732     else
 733         ncols = (nitems + nrows-1) / nrows;
 734
 735     wxSize sz( GetSize() );
 736     wxSize minsz( CalcMin() );
 737     wxPoint pt( GetPosition() );
 738     int    delta;
 739     size_t idx;
 740
 741     if ((m_growableRows.GetCount() > 0) && (sz.y > minsz.y))
 742     {
 743         delta = (sz.y - minsz.y) / m_growableRows.GetCount();
 744         for (idx = 0; idx < m_growableRows.GetCount(); idx++)
 745             m_rowHeights[ m_growableRows[idx] ] += delta;
 746     }
 747
 748     if ((m_growableCols.GetCount() > 0) && (sz.x > minsz.x))
 749     {
 750         delta = (sz.x - minsz.x) / m_growableCols.GetCount();
 751         for (idx = 0; idx < m_growableCols.GetCount(); idx++)
 752             m_colWidths[ m_growableCols[idx] ] += delta;
 753     }
 754
 755     sz = wxSize( pt.x + sz.x, pt.y + sz.y );
 756
 757     int x = pt.x;
 758     for (int c = 0; c < ncols; c++)
 759     {
 760         int y = pt.y;
 761         for (int r = 0; r < nrows; r++)
 762         {
 763             int i = r * ncols + c;
 764             if (i < nitems)
 765             {
 766                 wxNode *node = m_children.Nth( i );
 767                 wxASSERT( node );
 768
 769                 int w = wxMax( 0, wxMin( m_colWidths[c], sz.x - x ) );
 770                 int h = wxMax( 0, wxMin( m_rowHeights[r], sz.y - y ) );
 771
 772                 SetItemBounds( (wxSizerItem*) node->Data(), x, y, w, h);
 773             }
 774             y = y + m_rowHeights[r] + m_vgap;
 775         }
 776         x = x + m_colWidths[c] + m_hgap;
 777     }
 778 }
 779
 780 wxSize wxFlexGridSizer::CalcMin()
 781 {
 782     if (m_children.GetCount() == 0)
 783         return wxSize(10,10);
 784
 785     int nitems = m_children.GetCount();
 786     int nrows = m_rows;
 787     int ncols = m_cols;
 788
 789     if (ncols > 0)
 790         nrows = (nitems + ncols-1) / ncols;
 791     else
 792         ncols = (nitems + nrows-1) / nrows;
 793
 794     CreateArrays();
 795
 796     int col;
 797     int row;
 798
 799     int i = 0;
 800     wxNode *node = m_children.First();
 801     while (node)
 802     {
 803         wxSizerItem *item = (wxSizerItem*)node->Data();
 804         wxSize sz( item->CalcMin() );
 805         row = i / ncols;
 806         col = i % ncols;
 807         m_rowHeights[ row ] = wxMax( sz.y, m_rowHeights[ row ] );
 808         m_colWidths[ col ] = wxMax( sz.x, m_colWidths[ col ] );
 809
 810         node = node->Next();
 811         i++;
 812     }
 813
 814     int width = 0;
 815     for (col = 0; col < ncols; col++)
 816         width += m_colWidths[ col ];
 817
 818     int height = 0;
 819     for (row = 0; row < nrows; row++)
 820         height += m_rowHeights[ row ];
 821
 822     return wxSize( width +  (ncols-1) * m_hgap,
 823                    height + (nrows-1) * m_vgap);
 824 }
 825
 826 void wxFlexGridSizer::AddGrowableRow( size_t idx )
 827 {
 828     m_growableRows.Add( idx );
 829 }
 830
 831 void wxFlexGridSizer::RemoveGrowableRow( size_t WXUNUSED(idx) )
 832 {
 833 }
 834
 835 void wxFlexGridSizer::AddGrowableCol( size_t idx )
 836 {
 837     m_growableCols.Add( idx );
 838 }
 839
 840 void wxFlexGridSizer::RemoveGrowableCol( size_t WXUNUSED(idx) )
 841 {
 842 }
 843
 844 //---------------------------------------------------------------------------
 845 // wxBoxSizer
 846 //---------------------------------------------------------------------------
 847
 848 wxBoxSizer::wxBoxSizer( int orient )
 849 {
 850     m_orient = orient;
 851 }
 852
 853 void wxBoxSizer::RecalcSizes()
 854 {
 855     if (m_children.GetCount() == 0)
 856         return;
 857
 858     int delta = 0;
 859     int extra = 0;
 860     if (m_stretchable)
 861     {
 862         if (m_orient == wxHORIZONTAL)
 863         {
 864             delta = (m_size.x - m_fixedWidth) / m_stretchable;
 865             extra = (m_size.x - m_fixedWidth) % m_stretchable;
 866         }
 867         else
 868         {
 869             delta = (m_size.y - m_fixedHeight) / m_stretchable;
 870             extra = (m_size.y - m_fixedHeight) % m_stretchable;
 871         }
 872     }
 873
 874     wxPoint pt( m_position );
 875
 876     wxNode *node = m_children.GetFirst();
 877     while (node)
 878     {
 879         wxSizerItem *item = (wxSizerItem*) node->Data();
 880
 881         int weight = 1;
 882         if (item->GetOption())
 883             weight = item->GetOption();
 884
 885         wxSize size( item->CalcMin() );
 886
 887         if (m_orient == wxVERTICAL)
 888         {
 889             wxCoord height = size.y;
 890             if (item->GetOption())
 891             {
 892                 height = (delta * weight) + extra;
 893                 extra = 0; // only the first item will get the remainder as extra size
 894             }
 895
 896             wxPoint child_pos( pt );
 897             wxSize  child_size( wxSize( size.x, height) );
 898
 899             if (item->GetFlag() & (wxEXPAND | wxSHAPED))
 900                 child_size.x = m_size.x;
 901             else if (item->GetFlag() & wxALIGN_RIGHT)
 902                 child_pos.x += m_size.x - size.x;
 903             else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_HORIZONTAL))
 904             // XXX wxCENTER is added for backward compatibility;
 905             //     wxALIGN_CENTER should be used in new code
 906                 child_pos.x += (m_size.x - size.x) / 2;
 907
 908             item->SetDimension( child_pos, child_size );
 909
 910             pt.y += height;
 911         }
 912         else
 913         {
 914             wxCoord width = size.x;
 915             if (item->GetOption())
 916             {
 917                 width = (delta * weight) + extra;
 918                 extra = 0; // only the first item will get the remainder as extra size
 919             }
 920
 921             wxPoint child_pos( pt );
 922             wxSize  child_size( wxSize(width, size.y) );
 923
 924             if (item->GetFlag() & (wxEXPAND | wxSHAPED))
 925                 child_size.y = m_size.y;
 926             else if (item->GetFlag() & wxALIGN_BOTTOM)
 927                 child_pos.y += m_size.y - size.y;
 928             else if (item->GetFlag() & (wxCENTER | wxALIGN_CENTER_VERTICAL))
 929             // XXX wxCENTER is added for backward compatibility;
 930             //     wxALIGN_CENTER should be used in new code
 931                 child_pos.y += (m_size.y - size.y) / 2;
 932
 933             item->SetDimension( child_pos, child_size );
 934
 935             pt.x += width;
 936         }
 937
 938         node = node->Next();
 939     }
 940 }
 941
 942 wxSize wxBoxSizer::CalcMin()
 943 {
 944     if (m_children.GetCount() == 0)
 945         return wxSize(10,10);
 946
 947     m_stretchable = 0;
 948     m_minWidth = 0;
 949     m_minHeight = 0;
 950     m_fixedWidth = 0;
 951     m_fixedHeight = 0;
 952
 953     // Find how long each stretch unit needs to be
 954     int stretchSize = 1;
 955     wxNode *node = m_children.GetFirst();
 956     while (node)
 957     {
 958         wxSizerItem *item = (wxSizerItem*) node->Data();
 959         if (item->GetOption() != 0)
 960         {
 961             int stretch = item->GetOption();
 962             wxSize size( item->CalcMin() );
 963             int sizePerStretch;
 964             // Integer division rounded up is (a + b - 1) / b
 965             if (m_orient == wxHORIZONTAL)
 966                 sizePerStretch = ( size.x + stretch - 1 ) / stretch;
 967             else
 968                 sizePerStretch = ( size.y + stretch - 1 ) / stretch;
 969             if (sizePerStretch > stretchSize)
 970                 stretchSize = sizePerStretch;
 971         }
 972         node = node->Next();
 973     }
 974         // Calculate overall minimum size
 975         node = m_children.GetFirst();
 976     while (node)
 977     {
 978         wxSizerItem *item = (wxSizerItem*) node->Data();
 979
 980         m_stretchable += item->GetOption();
 981
 982         wxSize size( item->CalcMin() );
 983         if (item->GetOption() != 0)
 984         {
 985             if (m_orient == wxHORIZONTAL)
 986                 size.x = stretchSize * item->GetOption();
 987             else
 988                 size.y = stretchSize * item->GetOption();
 989         }
 990
 991         if (m_orient == wxHORIZONTAL)
 992         {
 993             m_minWidth += size.x;
 994             m_minHeight = wxMax( m_minHeight, size.y );
 995         }
 996         else
 997         {
 998             m_minHeight += size.y;
 999             m_minWidth = wxMax( m_minWidth, size.x );
1000         }
1001
1002         if (item->GetOption() == 0)
1003         {
1004             if (m_orient == wxVERTICAL)
1005             {
1006                 m_fixedHeight += size.y;
1007                 m_fixedWidth = wxMax( m_fixedWidth, size.x );
1008             }
1009             else
1010             {
1011                 m_fixedWidth += size.x;
1012                 m_fixedHeight = wxMax( m_fixedHeight, size.y );
1013             }
1014         }
1015
1016         node = node->Next();
1017     }
1018
1019     return wxSize( m_minWidth, m_minHeight );
1020 }
1021
1022 //---------------------------------------------------------------------------
1023 // wxStaticBoxSizer
1024 //---------------------------------------------------------------------------
1025
1026 #if wxUSE_STATBOX
1027
1028 wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )
1029                 : wxBoxSizer( orient )
1030 {
1031     wxASSERT_MSG( box, wxT("wxStaticBoxSizer needs a static box") );
1032
1033     m_staticBox = box;
1034 }
1035
1036 static void GetStaticBoxBorders(wxStaticBox *box,
1037                                 int *borderTop, int *borderOther)
1038 {
1039     // this has to be done platform by platform as there is no way to
1040     // guess the thickness of a wxStaticBox border
1041 #ifdef __WXGTK__
1042     if ( box->GetLabel().IsEmpty() )
1043         *borderTop = 5;
1044     else
1045 #endif // __WXGTK__
1046         *borderTop = 15;
1047         (void)box;
1048     *borderOther = 5;
1049 }
1050
1051 void wxStaticBoxSizer::RecalcSizes()
1052 {
1053     int top_border, other_border;
1054     GetStaticBoxBorders(m_staticBox, &top_border, &other_border);
1055
1056     m_staticBox->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
1057
1058     wxPoint old_pos( m_position );
1059     m_position.x += other_border;
1060     m_position.y += top_border;
1061     wxSize old_size( m_size );
1062     m_size.x -= 2*other_border;
1063     m_size.y -= top_border + other_border;
1064
1065     wxBoxSizer::RecalcSizes();
1066
1067     m_position = old_pos;
1068     m_size = old_size;
1069 }
1070
1071 wxSize wxStaticBoxSizer::CalcMin()
1072 {
1073     int top_border, other_border;
1074     GetStaticBoxBorders(m_staticBox, &top_border, &other_border);
1075
1076     wxSize ret( wxBoxSizer::CalcMin() );
1077     ret.x += 2*other_border;
1078     ret.y += other_border + top_border;
1079
1080     return ret;
1081 }
1082
1083 #endif // wxUSE_STATBOX
1084
1085 //---------------------------------------------------------------------------
1086 // wxNotebookSizer
1087 //---------------------------------------------------------------------------
1088
1089 #if wxUSE_NOTEBOOK
1090
1091 wxNotebookSizer::wxNotebookSizer( wxNotebook *nb )
1092 {
1093     wxASSERT_MSG( nb, wxT("wxNotebookSizer needs a notebook") );
1094
1095     m_notebook = nb;
1096 }
1097
1098 void wxNotebookSizer::RecalcSizes()
1099 {
1100     m_notebook->SetSize( m_position.x, m_position.y, m_size.x, m_size.y );
1101 }
1102
1103 wxSize wxNotebookSizer::CalcMin()
1104 {
1105     wxSize sizeBorder = m_notebook->CalcSizeFromPage(wxSize(0, 0));
1106
1107     sizeBorder.x += 5;
1108     sizeBorder.y += 5;
1109
1110     if (m_notebook->GetChildren().GetCount() == 0)
1111     {
1112         return wxSize(sizeBorder.x + 10, sizeBorder.y + 10);
1113     }
1114
1115     int maxX = 0;
1116     int maxY = 0;
1117
1118     wxWindowList::Node *node = m_notebook->GetChildren().GetFirst();
1119     while (node)
1120     {
1121         wxWindow *item = node->GetData();
1122         wxSizer *itemsizer = item->GetSizer();
1123
1124         if (itemsizer)
1125         {
1126             wxSize subsize( itemsizer->CalcMin() );
1127
1128             if (subsize.x > maxX)
1129                 maxX = subsize.x;
1130             if (subsize.y > maxY)
1131                 maxY = subsize.y;
1132         }
1133
1134         node = node->GetNext();
1135     }
1136
1137     return wxSize( maxX, maxY ) + sizeBorder;
1138 }
1139
1140 #endif // wxUSE_NOTEBOOK