src/univ/notebook.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/univ/notebook.cpp
   3 // Purpose:     wxNotebook implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     01.02.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #if wxUSE_NOTEBOOK
  27
  28 #include "wx/notebook.h"
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/dcmemory.h"
  32 #endif
  33
  34 #include "wx/imaglist.h"
  35 #include "wx/spinbutt.h"
  36
  37 #include "wx/univ/renderer.h"
  38
  39 // ----------------------------------------------------------------------------
  40 // macros
  41 // ----------------------------------------------------------------------------
  42
  43 #if 0
  44 // due to unsigned type nPage is always >= 0
  45 #define IS_VALID_PAGE(nPage) (((nPage) >= 0) && ((size_t(nPage)) < GetPageCount()))
  46 #else
  47 #define IS_VALID_PAGE(nPage) (((size_t)nPage) < GetPageCount())
  48 #endif
  49
  50 // ----------------------------------------------------------------------------
  51 // constants
  52 // ----------------------------------------------------------------------------
  53
  54 static const size_t INVALID_PAGE = (size_t)-1;
  55
  56 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED)
  57 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING)
  58
  59 // ----------------------------------------------------------------------------
  60 // private classes
  61 // ----------------------------------------------------------------------------
  62
  63 class wxNotebookSpinBtn : public wxSpinButton
  64 {
  65 public:
  66     wxNotebookSpinBtn(wxNotebook *nb)
  67         : wxSpinButton(nb, wxID_ANY,
  68                        wxDefaultPosition, wxDefaultSize,
  69                        nb->IsVertical() ? wxSP_VERTICAL : wxSP_HORIZONTAL)
  70     {
  71         m_nb = nb;
  72     }
  73
  74 protected:
  75     void OnSpin(wxSpinEvent& event)
  76     {
  77         m_nb->PerformAction(wxACTION_NOTEBOOK_GOTO, event.GetPosition());
  78     }
  79
  80 private:
  81     wxNotebook *m_nb;
  82
  83     DECLARE_EVENT_TABLE()
  84 };
  85
  86 BEGIN_EVENT_TABLE(wxNotebookSpinBtn, wxSpinButton)
  87     EVT_SPIN(wxID_ANY, wxNotebookSpinBtn::OnSpin)
  88 END_EVENT_TABLE()
  89
  90 // ============================================================================
  91 // implementation
  92 // ============================================================================
  93
  94 IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
  95 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)
  96
  97 // ----------------------------------------------------------------------------
  98 // wxNotebook creation
  99 // ----------------------------------------------------------------------------
 100
 101 void wxNotebook::Init()
 102 {
 103     m_sel = INVALID_PAGE;
 104
 105     m_heightTab =
 106     m_widthMax = 0;
 107
 108     m_firstVisible =
 109     m_lastVisible =
 110     m_lastFullyVisible = 0;
 111
 112     m_offset = 0;
 113
 114     m_spinbtn = NULL;
 115 }
 116
 117 bool wxNotebook::Create(wxWindow *parent,
 118                         wxWindowID id,
 119                         const wxPoint& pos,
 120                         const wxSize& size,
 121                         long style,
 122                         const wxString& name)
 123 {
 124     if ( (style & wxBK_ALIGN_MASK) == wxBK_DEFAULT )
 125         style |= wxBK_TOP;
 126
 127     if ( !wxControl::Create(parent, id, pos, size, style,
 128                             wxDefaultValidator, name) )
 129         return false;
 130
 131     m_sizePad = GetRenderer()->GetTabPadding();
 132
 133     SetBestSize(size);
 134
 135     CreateInputHandler(wxINP_HANDLER_NOTEBOOK);
 136
 137     return true;
 138 }
 139
 140 // ----------------------------------------------------------------------------
 141 // wxNotebook page titles and images
 142 // ----------------------------------------------------------------------------
 143
 144 wxString wxNotebook::GetPageText(size_t nPage) const
 145 {
 146     wxCHECK_MSG( IS_VALID_PAGE(nPage), wxEmptyString, _T("invalid notebook page") );
 147
 148     return m_titles[nPage];
 149 }
 150
 151 bool wxNotebook::SetPageText(size_t nPage, const wxString& strText)
 152 {
 153     wxCHECK_MSG( IS_VALID_PAGE(nPage), false, _T("invalid notebook page") );
 154
 155     if ( strText != m_titles[nPage] )
 156     {
 157         m_accels[nPage] = FindAccelIndex(strText, &m_titles[nPage]);
 158
 159         if ( FixedSizeTabs() )
 160         {
 161             // it's enough to just reresh this one
 162             RefreshTab(nPage);
 163         }
 164         else // var width tabs
 165         {
 166             // we need to resize the tab to fit the new string
 167             ResizeTab(nPage);
 168         }
 169     }
 170
 171     return true;
 172 }
 173
 174 int wxNotebook::GetPageImage(size_t nPage) const
 175 {
 176     wxCHECK_MSG( IS_VALID_PAGE(nPage), wxNOT_FOUND, _T("invalid notebook page") );
 177
 178     return m_images[nPage];
 179 }
 180
 181 bool wxNotebook::SetPageImage(size_t nPage, int nImage)
 182 {
 183     wxCHECK_MSG( IS_VALID_PAGE(nPage), false, _T("invalid notebook page") );
 184
 185     wxCHECK_MSG( m_imageList && nImage < m_imageList->GetImageCount(), false,
 186                  _T("invalid image index in SetPageImage()") );
 187
 188     if ( nImage != m_images[nPage] )
 189     {
 190         // if the item didn't have an icon before or, on the contrary, did have
 191         // it but has lost it now, its size will change - but if the icon just
 192         // changes, it won't
 193         bool tabSizeChanges = nImage == -1 || m_images[nPage] == -1;
 194         m_images[nPage] = nImage;
 195
 196         if ( tabSizeChanges )
 197             RefreshAllTabs();
 198         else
 199             RefreshTab(nPage);
 200     }
 201
 202     return true;
 203 }
 204
 205 wxNotebook::~wxNotebook()
 206 {
 207 }
 208
 209 // ----------------------------------------------------------------------------
 210 // wxNotebook page switching
 211 // ----------------------------------------------------------------------------
 212
 213 int wxNotebook::SetSelection(size_t nPage)
 214 {
 215     wxCHECK_MSG( IS_VALID_PAGE(nPage), wxNOT_FOUND, _T("invalid notebook page") );
 216
 217     if ( (size_t)nPage == m_sel )
 218     {
 219         // don't do anything if there is nothing to do
 220         return m_sel;
 221     }
 222
 223     // event handling
 224     wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_windowId);
 225     event.SetSelection(nPage);
 226     event.SetOldSelection(m_sel);
 227     event.SetEventObject(this);
 228     if ( GetEventHandler()->ProcessEvent(event) && !event.IsAllowed() )
 229     {
 230         // program doesn't allow the page change
 231         return m_sel;
 232     }
 233
 234     // we need to change m_sel first, before calling RefreshTab() below as
 235     // otherwise the previously selected tab wouldn't be redrawn properly under
 236     // wxGTK which calls Refresh() immediately and not during the next event
 237     // loop iteration as wxMSW does and as it should
 238     size_t selOld = m_sel;
 239
 240     m_sel = nPage;
 241
 242     if ( selOld != INVALID_PAGE )
 243     {
 244         RefreshTab(selOld, true /* this tab was selected */);
 245
 246         m_pages[selOld]->Hide();
 247     }
 248
 249     if ( m_sel != INVALID_PAGE ) // this is impossible - but test nevertheless
 250     {
 251         if ( HasSpinBtn() )
 252         {
 253             // keep it in sync
 254             m_spinbtn->SetValue(m_sel);
 255         }
 256
 257         if ( m_sel < m_firstVisible )
 258         {
 259             // selection is to the left of visible part of tabs
 260             ScrollTo(m_sel);
 261         }
 262         else if ( m_sel > m_lastFullyVisible )
 263         {
 264             // selection is to the right of visible part of tabs
 265             ScrollLastTo(m_sel);
 266         }
 267         else // we already see this tab
 268         {
 269             // no need to scroll
 270             RefreshTab(m_sel);
 271         }
 272
 273         m_pages[m_sel]->SetSize(GetPageRect());
 274         m_pages[m_sel]->Show();
 275     }
 276
 277     // event handling
 278     event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
 279     GetEventHandler()->ProcessEvent(event);
 280
 281     return selOld;
 282 }
 283
 284 // ----------------------------------------------------------------------------
 285 // wxNotebook pages adding/deleting
 286 // ----------------------------------------------------------------------------
 287
 288 bool wxNotebook::InsertPage(size_t nPage,
 289                             wxNotebookPage *pPage,
 290                             const wxString& strText,
 291                             bool bSelect,
 292                             int imageId)
 293 {
 294     size_t nPages = GetPageCount();
 295     wxCHECK_MSG( nPage == nPages || IS_VALID_PAGE(nPage), false,
 296                  _T("invalid notebook page in InsertPage()") );
 297
 298     // modify the data
 299     m_pages.Insert(pPage, nPage);
 300
 301     wxString label;
 302     m_accels.Insert(FindAccelIndex(strText, &label), nPage);
 303     m_titles.Insert(label, nPage);
 304
 305     m_images.Insert(imageId, nPage);
 306
 307     // cache the tab geometry here
 308     wxSize sizeTab = CalcTabSize(nPage);
 309
 310     if ( sizeTab.y > m_heightTab )
 311         m_heightTab = sizeTab.y;
 312
 313     if ( FixedSizeTabs() && sizeTab.x > m_widthMax )
 314         m_widthMax = sizeTab.x;
 315
 316     m_widths.Insert(sizeTab.x, nPage);
 317
 318     // spin button may appear if we didn't have it before - but even if we did,
 319     // its range should change, so update it unconditionally
 320     UpdateSpinBtn();
 321
 322     // if the tab has just appeared, we have to relayout everything, otherwise
 323     // it's enough to just redraw the tabs
 324     if ( nPages == 0 )
 325     {
 326         // always select the first tab to have at least some selection
 327         bSelect = true;
 328
 329         Relayout();
 330         Refresh();
 331     }
 332     else // not the first tab
 333     {
 334         RefreshAllTabs();
 335     }
 336
 337     if ( bSelect )
 338     {
 339         SetSelection(nPage);
 340     }
 341     else // pages added to the notebook are initially hidden
 342     {
 343         pPage->Hide();
 344     }
 345
 346     return true;
 347 }
 348
 349 bool wxNotebook::DeleteAllPages()
 350 {
 351     if ( !wxNotebookBase::DeleteAllPages() )
 352         return false;
 353
 354     // clear the other arrays as well
 355     m_titles.Clear();
 356     m_images.Clear();
 357     m_accels.Clear();
 358     m_widths.Clear();
 359
 360     // it is not valid any longer
 361     m_sel = INVALID_PAGE;
 362
 363     // spin button is not needed any more
 364     UpdateSpinBtn();
 365
 366     Relayout();
 367
 368     return true;
 369 }
 370
 371 wxNotebookPage *wxNotebook::DoRemovePage(size_t nPage)
 372 {
 373     wxCHECK_MSG( IS_VALID_PAGE(nPage), NULL, _T("invalid notebook page") );
 374
 375     wxNotebookPage *page = m_pages[nPage];
 376     m_pages.RemoveAt(nPage);
 377     m_titles.RemoveAt(nPage);
 378     m_accels.RemoveAt(nPage);
 379     m_widths.RemoveAt(nPage);
 380     m_images.RemoveAt(nPage);
 381
 382     // the spin button might not be needed any more
 383     // 2002-08-12 'if' commented out by JACS on behalf
 384     // of Hans Van Leemputten <Hansvl@softhome.net> who
 385     // points out that UpdateSpinBtn should always be called,
 386     // to ensure m_lastVisible is up to date.
 387     // if ( HasSpinBtn() )
 388     {
 389         UpdateSpinBtn();
 390     }
 391
 392     size_t count = GetPageCount();
 393     if ( count )
 394     {
 395         if ( m_sel == (size_t)nPage )
 396         {
 397             // avoid sending event to this page which doesn't exist in the
 398             // notebook any more
 399             m_sel = INVALID_PAGE;
 400
 401             SetSelection(nPage == count ? nPage - 1 : nPage);
 402         }
 403         else if ( m_sel > (size_t)nPage )
 404         {
 405             // no need to change selection, just adjust the index
 406             m_sel--;
 407         }
 408     }
 409     else // no more tabs left
 410     {
 411         m_sel = INVALID_PAGE;
 412     }
 413
 414     // have to refresh everything
 415     Relayout();
 416
 417     return page;
 418 }
 419
 420 // ----------------------------------------------------------------------------
 421 // wxNotebook drawing
 422 // ----------------------------------------------------------------------------
 423
 424 void wxNotebook::RefreshCurrent()
 425 {
 426     if ( m_sel != INVALID_PAGE )
 427     {
 428         RefreshTab(m_sel);
 429     }
 430 }
 431
 432 void wxNotebook::RefreshTab(int page, bool forceSelected)
 433 {
 434     wxCHECK_RET( IS_VALID_PAGE(page), _T("invalid notebook page") );
 435
 436     wxRect rect = GetTabRect(page);
 437     if ( forceSelected || ((size_t)page == m_sel) )
 438     {
 439         const wxSize indent = GetRenderer()->GetTabIndent();
 440         rect.Inflate(indent.x, indent.y);
 441     }
 442
 443     RefreshRect(rect);
 444 }
 445
 446 void wxNotebook::RefreshAllTabs()
 447 {
 448     wxRect rect = GetAllTabsRect();
 449     if ( rect.width || rect.height )
 450     {
 451         RefreshRect(rect);
 452     }
 453     //else: we don't have tabs at all
 454 }
 455
 456 void wxNotebook::DoDrawTab(wxDC& dc, const wxRect& rect, size_t n)
 457 {
 458     wxBitmap bmp;
 459     if ( HasImage(n) )
 460     {
 461         int image = m_images[n];
 462
 463         // Not needed now that wxGenericImageList is being
 464         // used for wxUniversal under MSW
 465 #if 0 // def __WXMSW__    // FIXME
 466         int w, h;
 467         m_imageList->GetSize(n, w, h);
 468         bmp.Create(w, h);
 469         wxMemoryDC dc;
 470         dc.SelectObject(bmp);
 471         dc.SetBackground(wxBrush(GetBackgroundColour(), wxSOLID));
 472         m_imageList->Draw(image, dc, 0, 0, wxIMAGELIST_DRAW_NORMAL, true);
 473         dc.SelectObject(wxNullBitmap);
 474 #else
 475         bmp = m_imageList->GetBitmap(image);
 476 #endif
 477     }
 478
 479     int flags = 0;
 480     if ( n == m_sel )
 481     {
 482         flags |= wxCONTROL_SELECTED;
 483
 484         if ( IsFocused() )
 485             flags |= wxCONTROL_FOCUSED;
 486     }
 487
 488     GetRenderer()->DrawTab
 489                    (
 490                      dc,
 491                      rect,
 492                      GetTabOrientation(),
 493                      m_titles[n],
 494                      bmp,
 495                      flags,
 496                      m_accels[n]
 497                    );
 498 }
 499
 500 void wxNotebook::DoDraw(wxControlRenderer *renderer)
 501 {
 502     //wxRect rectUpdate = GetUpdateClientRect(); -- unused
 503
 504     wxDC& dc = renderer->GetDC();
 505     dc.SetFont(GetFont());
 506     dc.SetTextForeground(GetForegroundColour());
 507
 508     // redraw the border - it's simpler to always do it instead of checking
 509     // whether this needs to be done
 510     GetRenderer()->DrawBorder(dc, wxBORDER_RAISED, GetPagePart());
 511
 512     // avoid overwriting the spin button
 513     if ( HasSpinBtn() )
 514     {
 515         wxRect rectTabs = GetAllTabsRect();
 516         wxSize sizeSpinBtn = m_spinbtn->GetSize();
 517
 518         if ( IsVertical() )
 519         {
 520             rectTabs.height -= sizeSpinBtn.y;
 521
 522             // Allow for erasing the line under selected tab
 523             rectTabs.width += 2;
 524         }
 525         else
 526         {
 527             rectTabs.width -= sizeSpinBtn.x;
 528
 529             // Allow for erasing the line under selected tab
 530             rectTabs.height += 2;
 531         }
 532
 533         dc.SetClippingRegion(rectTabs);
 534     }
 535
 536     wxRect rect = GetTabsPart();
 537     bool isVertical = IsVertical();
 538
 539     wxRect rectSel;
 540     for ( size_t n = m_firstVisible; n < m_lastVisible; n++ )
 541     {
 542         GetTabSize(n, &rect.width, &rect.height);
 543
 544         if ( n == m_sel )
 545         {
 546             // don't redraw it now as this tab has to be drawn over the other
 547             // ones as it takes more place and spills over to them
 548             rectSel = rect;
 549         }
 550         else // not selected tab
 551         {
 552             // unfortunately we can't do this because the selected tab hangs
 553             // over its neighbours and so we might need to refresh more tabs -
 554             // of course, we could still avoid rereshing some of them with more
 555             // complicated checks, but it doesn't seem too bad to refresh all
 556             // of them, I still don't see flicker, so leaving as is for now
 557
 558             //if ( rectUpdate.Intersects(rect) )
 559             {
 560                 DoDrawTab(dc, rect, n);
 561             }
 562             //else: doesn't need to be refreshed
 563         }
 564
 565         // move the rect to the next tab
 566         if ( isVertical )
 567             rect.y += rect.height;
 568         else
 569             rect.x += rect.width;
 570     }
 571
 572     // now redraw the selected tab
 573     if ( rectSel.width )
 574     {
 575         DoDrawTab(dc, rectSel, m_sel);
 576     }
 577
 578     dc.DestroyClippingRegion();
 579 }
 580
 581 // ----------------------------------------------------------------------------
 582 // wxNotebook geometry
 583 // ----------------------------------------------------------------------------
 584
 585 int wxNotebook::HitTest(const wxPoint& pt, long *flags) const
 586 {
 587     if ( flags )
 588         *flags = wxNB_HITTEST_NOWHERE;
 589
 590     // first check that it is in this window at all
 591     if ( !GetClientRect().Inside(pt) )
 592     {
 593         return -1;
 594     }
 595
 596     wxRect rectTabs = GetAllTabsRect();
 597
 598     switch ( GetTabOrientation() )
 599     {
 600         default:
 601             wxFAIL_MSG(_T("unknown tab orientation"));
 602             // fall through
 603
 604         case wxTOP:
 605             if ( pt.y > rectTabs.GetBottom() )
 606                 return -1;
 607             break;
 608
 609         case wxBOTTOM:
 610             if ( pt.y < rectTabs.y )
 611                 return -1;
 612             break;
 613
 614         case wxLEFT:
 615             if ( pt.x > rectTabs.GetRight() )
 616                 return -1;
 617             break;
 618
 619         case wxRIGHT:
 620             if ( pt.x < rectTabs.x )
 621                 return -1;
 622             break;
 623     }
 624
 625     for ( size_t n = m_firstVisible; n < m_lastVisible; n++ )
 626     {
 627         GetTabSize(n, &rectTabs.width, &rectTabs.height);
 628
 629         if ( rectTabs.Inside(pt) )
 630         {
 631             if ( flags )
 632             {
 633                 // TODO: be more precise
 634                 *flags = wxNB_HITTEST_ONITEM;
 635             }
 636
 637             return n;
 638         }
 639
 640         // move the rectTabs to the next tab
 641         if ( IsVertical() )
 642             rectTabs.y += rectTabs.height;
 643         else
 644             rectTabs.x += rectTabs.width;
 645     }
 646
 647     return -1;
 648 }
 649
 650 bool wxNotebook::IsVertical() const
 651 {
 652     wxDirection dir = GetTabOrientation();
 653
 654     return dir == wxLEFT || dir == wxRIGHT;
 655 }
 656
 657 wxDirection wxNotebook::GetTabOrientation() const
 658 {
 659     long style = GetWindowStyle();
 660     if ( style & wxBK_BOTTOM )
 661         return wxBOTTOM;
 662     else if ( style & wxBK_RIGHT )
 663         return wxRIGHT;
 664     else if ( style & wxBK_LEFT )
 665         return wxLEFT;
 666
 667     // wxBK_TOP == 0 so we don't have to test for it
 668     return wxTOP;
 669 }
 670
 671 wxRect wxNotebook::GetTabRect(int page) const
 672 {
 673     wxRect rect;
 674     wxCHECK_MSG( IS_VALID_PAGE(page), rect, _T("invalid notebook page") );
 675
 676     // calc the size of this tab and of the preceding ones
 677     wxCoord widthThis, widthBefore;
 678     if ( FixedSizeTabs() )
 679     {
 680         widthThis = m_widthMax;
 681         widthBefore = page*m_widthMax;
 682     }
 683     else
 684     {
 685         widthBefore = 0;
 686         for ( int n = 0; n < page; n++ )
 687         {
 688             widthBefore += m_widths[n];
 689         }
 690
 691         widthThis = m_widths[page];
 692     }
 693
 694     rect = GetTabsPart();
 695     if ( IsVertical() )
 696     {
 697         rect.y += widthBefore - m_offset;
 698         rect.height = widthThis;
 699     }
 700     else // horz
 701     {
 702         rect.x += widthBefore - m_offset;
 703         rect.width = widthThis;
 704     }
 705
 706     return rect;
 707 }
 708
 709 wxRect wxNotebook::GetAllTabsRect() const
 710 {
 711     wxRect rect;
 712
 713     if ( GetPageCount() )
 714     {
 715         const wxSize indent = GetRenderer()->GetTabIndent();
 716         wxSize size = GetClientSize();
 717
 718         if ( IsVertical() )
 719         {
 720             rect.width = m_heightTab + indent.x;
 721             rect.x = GetTabOrientation() == wxLEFT ? 0 : size.x - rect.width;
 722             rect.y = 0;
 723             rect.height = size.y;
 724         }
 725         else // horz
 726         {
 727             rect.x = 0;
 728             rect.width = size.x;
 729             rect.height = m_heightTab + indent.y;
 730             rect.y = GetTabOrientation() == wxTOP ? 0 : size.y - rect.height;
 731         }
 732     }
 733     //else: no pages
 734
 735     return rect;
 736 }
 737
 738 wxRect wxNotebook::GetTabsPart() const
 739 {
 740     wxRect rect = GetAllTabsRect();
 741
 742     wxDirection dir = GetTabOrientation();
 743
 744     const wxSize indent = GetRenderer()->GetTabIndent();
 745     if ( IsVertical() )
 746     {
 747         rect.y += indent.x;
 748         if ( dir == wxLEFT )
 749         {
 750             rect.x += indent.y;
 751             rect.width -= indent.y;
 752         }
 753         else // wxRIGHT
 754         {
 755             rect.width -= indent.y;
 756         }
 757     }
 758     else // horz
 759     {
 760         rect.x += indent.x;
 761         if ( dir == wxTOP )
 762         {
 763             rect.y += indent.y;
 764             rect.height -= indent.y;
 765         }
 766         else // wxBOTTOM
 767         {
 768             rect.height -= indent.y;
 769         }
 770     }
 771
 772     return rect;
 773 }
 774
 775 void wxNotebook::GetTabSize(int page, wxCoord *w, wxCoord *h) const
 776 {
 777     wxCHECK_RET( w && h, _T("NULL pointer in GetTabSize") );
 778
 779     if ( IsVertical() )
 780     {
 781         // width and height have inverted meaning
 782         wxCoord *tmp = w;
 783         w = h;
 784         h = tmp;
 785     }
 786
 787     // height is always fixed
 788     *h = m_heightTab;
 789
 790     // width may also be fixed and be the same for all tabs
 791     *w = GetTabWidth(page);
 792 }
 793
 794 void wxNotebook::SetTabSize(const wxSize& sz)
 795 {
 796     wxCHECK_RET( FixedSizeTabs(), _T("SetTabSize() ignored") );
 797
 798     if ( IsVertical() )
 799     {
 800         m_heightTab = sz.x;
 801         m_widthMax = sz.y;
 802     }
 803     else // horz
 804     {
 805         m_widthMax = sz.x;
 806         m_heightTab = sz.y;
 807     }
 808 }
 809
 810 wxSize wxNotebook::CalcTabSize(int page) const
 811 {
 812     // NB: don't use m_widthMax, m_heightTab or m_widths here because this
 813     //     method is called to calculate them
 814
 815     wxSize size;
 816
 817     wxCHECK_MSG( IS_VALID_PAGE(page), size, _T("invalid notebook page") );
 818
 819     GetTextExtent(m_titles[page], &size.x, &size.y);
 820
 821     if ( HasImage(page) )
 822     {
 823         wxSize sizeImage;
 824         m_imageList->GetSize(m_images[page], sizeImage.x, sizeImage.y);
 825
 826         size.x += sizeImage.x + 5; // FIXME: hard coded margin
 827
 828         if ( sizeImage.y > size.y )
 829             size.y = sizeImage.y;
 830     }
 831
 832     size.x += 2*m_sizePad.x;
 833     size.y += 2*m_sizePad.y;
 834
 835     return size;
 836 }
 837
 838 void wxNotebook::ResizeTab(int page)
 839 {
 840     wxSize sizeTab = CalcTabSize(page);
 841
 842     // we only need full relayout if the page size changes
 843     bool needsRelayout = false;
 844
 845     if ( IsVertical() )
 846     {
 847         // swap coordinates
 848         wxCoord tmp = sizeTab.x;
 849         sizeTab.x = sizeTab.y;
 850         sizeTab.y = tmp;
 851     }
 852
 853     if ( sizeTab.y > m_heightTab )
 854     {
 855         needsRelayout = true;
 856
 857         m_heightTab = sizeTab.y;
 858     }
 859
 860     m_widths[page] = sizeTab.x;
 861
 862     if ( sizeTab.x > m_widthMax )
 863         m_widthMax = sizeTab.x;
 864
 865     // the total of the tabs has changed too
 866     UpdateSpinBtn();
 867
 868     if ( needsRelayout )
 869         Relayout();
 870     else
 871         RefreshAllTabs();
 872 }
 873
 874 void wxNotebook::SetPadding(const wxSize& padding)
 875 {
 876     if ( padding != m_sizePad )
 877     {
 878         m_sizePad = padding;
 879
 880         Relayout();
 881     }
 882 }
 883
 884 void wxNotebook::Relayout()
 885 {
 886     if ( GetPageCount() )
 887     {
 888         RefreshAllTabs();
 889
 890         UpdateSpinBtn();
 891
 892         if ( m_sel != INVALID_PAGE )
 893         {
 894             // resize the currently shown page
 895             wxRect rectPage = GetPageRect();
 896
 897             m_pages[m_sel]->SetSize(rectPage);
 898
 899             // also scroll it into view if needed (note that m_lastVisible
 900             // was updated by the call to UpdateSpinBtn() above, this is why it
 901             // is needed here)
 902             if ( HasSpinBtn() )
 903             {
 904                 if ( m_sel < m_firstVisible )
 905                 {
 906                     // selection is to the left of visible part of tabs
 907                     ScrollTo(m_sel);
 908                 }
 909                 else if ( m_sel > m_lastFullyVisible )
 910                 {
 911                     // selection is to the right of visible part of tabs
 912                     ScrollLastTo(m_sel);
 913                 }
 914             }
 915         }
 916     }
 917     else // we have no pages
 918     {
 919         // just refresh everything
 920         Refresh();
 921     }
 922 }
 923
 924 wxRect wxNotebook::GetPagePart() const
 925 {
 926     wxRect rectPage = GetClientRect();
 927
 928     if ( GetPageCount() )
 929     {
 930         wxRect rectTabs = GetAllTabsRect();
 931         wxDirection dir = GetTabOrientation();
 932         if ( IsVertical() )
 933         {
 934             rectPage.width -= rectTabs.width;
 935             if ( dir == wxLEFT )
 936                 rectPage.x += rectTabs.width;
 937         }
 938         else // horz
 939         {
 940             rectPage.height -= rectTabs.height;
 941             if ( dir == wxTOP )
 942                 rectPage.y += rectTabs.height;
 943         }
 944     }
 945     //else: no pages at all
 946
 947     return rectPage;
 948 }
 949
 950 wxRect wxNotebook::GetPageRect() const
 951 {
 952     wxRect rect = GetPagePart();
 953
 954     // leave space for the border
 955     wxRect rectBorder = GetRenderer()->GetBorderDimensions(wxBORDER_RAISED);
 956
 957     // FIXME: hardcoded +2!
 958     rect.Inflate(-(rectBorder.x + rectBorder.width + 2),
 959                  -(rectBorder.y + rectBorder.height + 2));
 960
 961     return rect;
 962 }
 963
 964 wxSize wxNotebook::GetSizeForPage(const wxSize& size) const
 965 {
 966     wxSize sizeNb = size;
 967     wxRect rect = GetAllTabsRect();
 968     if ( IsVertical() )
 969         sizeNb.x += rect.width;
 970     else
 971         sizeNb.y += rect.height;
 972
 973     return sizeNb;
 974 }
 975
 976 void wxNotebook::SetPageSize(const wxSize& size)
 977 {
 978     SetClientSize(GetSizeForPage(size));
 979 }
 980
 981 wxSize wxNotebook::CalcSizeFromPage(const wxSize& sizePage) const
 982 {
 983     return AdjustSize(GetSizeForPage(sizePage));
 984 }
 985
 986 // ----------------------------------------------------------------------------
 987 // wxNotebook spin button
 988 // ----------------------------------------------------------------------------
 989
 990 bool wxNotebook::HasSpinBtn() const
 991 {
 992     return m_spinbtn && m_spinbtn->IsShown();
 993 }
 994
 995 void wxNotebook::CalcLastVisibleTab()
 996 {
 997     bool isVertical = IsVertical();
 998
 999     wxCoord width = GetClientSize().x;
1000
1001     wxRect rect = GetTabsPart();
1002
1003     size_t count = GetPageCount();
1004
1005     wxCoord widthLast = 0;
1006     size_t n;
1007     for ( n = m_firstVisible; n < count; n++ )
1008     {
1009         GetTabSize(n, &rect.width, &rect.height);
1010         if ( rect.GetRight() > width )
1011         {
1012             break;
1013         }
1014
1015         // remember it to use below
1016         widthLast = rect.GetRight();
1017
1018         // move the rect to the next tab
1019         if ( isVertical )
1020             rect.y += rect.height;
1021         else
1022             rect.x += rect.width;
1023     }
1024
1025     if ( n == m_firstVisible )
1026     {
1027         // even the first tab isn't fully visible - but still pretend it is as
1028         // we have to show something
1029         m_lastFullyVisible = m_firstVisible;
1030     }
1031     else // more than one tab visible
1032     {
1033         m_lastFullyVisible = n - 1;
1034
1035         // but is it really fully visible? it shouldn't overlap with the spin
1036         // button if it is present (again, even if the first button does
1037         // overlap with it, we pretend that it doesn't as there is not much
1038         // else we can do)
1039         if ( (m_lastFullyVisible > m_firstVisible) && HasSpinBtn() )
1040         {
1041             // adjust width to be the width before the spin button
1042             wxSize sizeSpinBtn = m_spinbtn->GetSize();
1043             if ( IsVertical() )
1044                 width -= sizeSpinBtn.y;
1045             else
1046                 width -= sizeSpinBtn.x;
1047
1048             if ( widthLast > width )
1049             {
1050                 // the last button overlaps with spin button, so take he
1051                 // previous one
1052                 m_lastFullyVisible--;
1053             }
1054         }
1055     }
1056
1057     if ( n == count )
1058     {
1059         // everything is visible
1060         m_lastVisible = n;
1061     }
1062     else
1063     {
1064         // this tab is still (partially) visible, so m_lastVisible is the
1065         // next tab (remember, this is "exclusive" last)
1066         m_lastVisible = n + 1;
1067
1068     }
1069 }
1070
1071 void wxNotebook::UpdateSpinBtn()
1072 {
1073     // first decide if we need a spin button
1074     bool allTabsShown;
1075
1076     size_t count = (size_t)GetPageCount();
1077     if ( count == 0 )
1078     {
1079         // this case is special, get rid of it immediately: everything is
1080         // visible and we don't need any spin buttons
1081         allTabsShown = true;
1082
1083         // have to reset them manually as we don't call CalcLastVisibleTab()
1084         m_firstVisible =
1085         m_lastVisible =
1086         m_lastFullyVisible = 0;
1087     }
1088     else
1089     {
1090         CalcLastVisibleTab();
1091
1092         // if all tabs after the first visible one are shown, it doesn't yet
1093         // mean that all tabs are shown - so we go backwards until we arrive to
1094         // the beginning (then all tabs are indeed shown) or find a tab such
1095         // that not all tabs after it are shown
1096         while ( (m_lastFullyVisible == count - 1) && (m_firstVisible > 0) )
1097         {
1098             // this is equivalent to ScrollTo(m_firstVisible - 1) but more
1099             // efficient
1100             m_offset -= GetTabWidth(m_firstVisible--);
1101
1102             // reclaculate after m_firstVisible change
1103             CalcLastVisibleTab();
1104         }
1105
1106         allTabsShown = m_lastFullyVisible == count - 1;
1107     }
1108
1109     if ( !allTabsShown )
1110     {
1111         if ( !m_spinbtn )
1112         {
1113             // create it once only
1114             m_spinbtn = new wxNotebookSpinBtn(this);
1115
1116             // set the correct value to keep it in sync
1117             m_spinbtn->SetValue(m_sel);
1118         }
1119
1120         // position it correctly
1121         PositionSpinBtn();
1122
1123         // and show it
1124         m_spinbtn->Show();
1125
1126         // also set/update the range
1127         m_spinbtn->SetRange(0, count - 1);
1128
1129         // update m_lastFullyVisible once again as it might have changed
1130         // because the spin button appeared
1131         //
1132         // FIXME: might do it more efficiently
1133         CalcLastVisibleTab();
1134     }
1135     else // all tabs are visible, we don't need spin button
1136     {
1137         if ( m_spinbtn && m_spinbtn -> IsShown() )
1138         {
1139             m_spinbtn->Hide();
1140         }
1141     }
1142 }
1143
1144 void wxNotebook::PositionSpinBtn()
1145 {
1146     if ( !m_spinbtn )
1147         return;
1148
1149     wxCoord wBtn, hBtn;
1150     m_spinbtn->GetSize(&wBtn, &hBtn);
1151
1152     wxRect rectTabs = GetAllTabsRect();
1153
1154     wxCoord x, y;
1155     switch ( GetTabOrientation() )
1156     {
1157         default:
1158             wxFAIL_MSG(_T("unknown tab orientation"));
1159             // fall through
1160
1161         case wxTOP:
1162             x = rectTabs.GetRight() - wBtn;
1163             y = rectTabs.GetBottom() - hBtn;
1164             break;
1165
1166         case wxBOTTOM:
1167             x = rectTabs.GetRight() - wBtn;
1168             y = rectTabs.GetTop();
1169             break;
1170
1171         case wxLEFT:
1172             x = rectTabs.GetRight() - wBtn;
1173             y = rectTabs.GetBottom() - hBtn;
1174             break;
1175
1176         case wxRIGHT:
1177             x = rectTabs.GetLeft();
1178             y = rectTabs.GetBottom() - hBtn;
1179             break;
1180     }
1181
1182     m_spinbtn->Move(x, y);
1183 }
1184
1185 // ----------------------------------------------------------------------------
1186 // wxNotebook scrolling
1187 // ----------------------------------------------------------------------------
1188
1189 void wxNotebook::ScrollTo(int page)
1190 {
1191     wxCHECK_RET( IS_VALID_PAGE(page), _T("invalid notebook page") );
1192
1193     // set the first visible tab and offset (easy)
1194     m_firstVisible = (size_t)page;
1195     m_offset = 0;
1196     for ( size_t n = 0; n < m_firstVisible; n++ )
1197     {
1198         m_offset += GetTabWidth(n);
1199     }
1200
1201     // find the last visible tab too
1202     CalcLastVisibleTab();
1203
1204     RefreshAllTabs();
1205 }
1206
1207 void wxNotebook::ScrollLastTo(int page)
1208 {
1209     wxCHECK_RET( IS_VALID_PAGE(page), _T("invalid notebook page") );
1210
1211     // go backwards until we find the first tab which can be made visible
1212     // without hiding the given one
1213     wxSize size = GetClientSize();
1214     wxCoord widthAll = IsVertical() ? size.y : size.x,
1215             widthTabs = GetTabWidth(page);
1216
1217     // the total width is less than the width of the window if we have the spin
1218     // button
1219     if ( HasSpinBtn() )
1220     {
1221         wxSize sizeSpinBtn = m_spinbtn->GetSize();
1222         if ( IsVertical() )
1223             widthAll -= sizeSpinBtn.y;
1224         else
1225             widthAll -= sizeSpinBtn.x;
1226     }
1227
1228     m_firstVisible = page;
1229     while ( (m_firstVisible > 0) && (widthTabs <= widthAll) )
1230     {
1231         widthTabs += GetTabWidth(--m_firstVisible);
1232     }
1233
1234     if ( widthTabs > widthAll )
1235     {
1236         // take one step back (that it is forward) if we can
1237         if ( m_firstVisible < (size_t)GetPageCount() - 1 )
1238             m_firstVisible++;
1239     }
1240
1241     // go to it
1242     ScrollTo(m_firstVisible);
1243
1244     // consitency check: the page we were asked to show should be shown
1245     wxASSERT_MSG( (size_t)page < m_lastVisible, _T("bug in ScrollLastTo") );
1246 }
1247
1248 // ----------------------------------------------------------------------------
1249 // wxNotebook sizing/moving
1250 // ----------------------------------------------------------------------------
1251
1252 wxSize wxNotebook::DoGetBestClientSize() const
1253 {
1254     // calculate the max page size
1255     wxSize size;
1256
1257     size_t count = GetPageCount();
1258     if ( count )
1259     {
1260         for ( size_t n = 0; n < count; n++ )
1261         {
1262             wxSize sizePage = m_pages[n]->GetSize();
1263
1264             if ( size.x < sizePage.x )
1265                 size.x = sizePage.x;
1266             if ( size.y < sizePage.y )
1267                 size.y = sizePage.y;
1268         }
1269     }
1270     else // no pages
1271     {
1272         // use some arbitrary default size
1273         size.x =
1274         size.y = 100;
1275     }
1276
1277     return GetSizeForPage(size);
1278 }
1279
1280 void wxNotebook::DoMoveWindow(int x, int y, int width, int height)
1281 {
1282     wxControl::DoMoveWindow(x, y, width, height);
1283
1284     // move the spin ctrl too (NOP if it doesn't exist)
1285     PositionSpinBtn();
1286 }
1287
1288 void wxNotebook::DoSetSize(int x, int y,
1289                            int width, int height,
1290                            int sizeFlags)
1291 {
1292     wxSize old_client_size = GetClientSize();
1293
1294     wxControl::DoSetSize(x, y, width, height, sizeFlags);
1295
1296     wxSize new_client_size = GetClientSize();
1297
1298     if (old_client_size != new_client_size)
1299         Relayout();
1300 }
1301
1302 // ----------------------------------------------------------------------------
1303 // wxNotebook input processing
1304 // ----------------------------------------------------------------------------
1305
1306 bool wxNotebook::PerformAction(const wxControlAction& action,
1307                                long numArg,
1308                                const wxString& strArg)
1309 {
1310     if ( action == wxACTION_NOTEBOOK_NEXT )
1311         SetSelection(GetNextPage(true));
1312     else if ( action == wxACTION_NOTEBOOK_PREV )
1313         SetSelection(GetNextPage(false));
1314     else if ( action == wxACTION_NOTEBOOK_GOTO )
1315         SetSelection((int)numArg);
1316     else
1317         return wxControl::PerformAction(action, numArg, strArg);
1318
1319     return true;
1320 }
1321
1322 // ----------------------------------------------------------------------------
1323 // wxStdNotebookInputHandler
1324 // ----------------------------------------------------------------------------
1325
1326 wxStdNotebookInputHandler::wxStdNotebookInputHandler(wxInputHandler *inphand)
1327                          : wxStdInputHandler(inphand)
1328 {
1329 }
1330
1331 bool wxStdNotebookInputHandler::HandleKey(wxInputConsumer *consumer,
1332                                           const wxKeyEvent& event,
1333                                           bool pressed)
1334 {
1335     // ignore the key releases
1336     if ( pressed )
1337     {
1338         wxNotebook *notebook = wxStaticCast(consumer->GetInputWindow(), wxNotebook);
1339
1340         int page = 0;
1341         wxControlAction action;
1342         switch ( event.GetKeyCode() )
1343         {
1344             case WXK_UP:
1345                 if ( notebook->IsVertical() )
1346                     action = wxACTION_NOTEBOOK_PREV;
1347                 break;
1348
1349             case WXK_LEFT:
1350                 if ( !notebook->IsVertical() )
1351                     action = wxACTION_NOTEBOOK_PREV;
1352                 break;
1353
1354             case WXK_DOWN:
1355                 if ( notebook->IsVertical() )
1356                     action = wxACTION_NOTEBOOK_NEXT;
1357                 break;
1358
1359             case WXK_RIGHT:
1360                 if ( !notebook->IsVertical() )
1361                     action = wxACTION_NOTEBOOK_NEXT;
1362                 break;
1363
1364             case WXK_HOME:
1365                 action = wxACTION_NOTEBOOK_GOTO;
1366                 // page = 0; -- already has this value
1367                 break;
1368
1369             case WXK_END:
1370                 action = wxACTION_NOTEBOOK_GOTO;
1371                 page = notebook->GetPageCount() - 1;
1372                 break;
1373         }
1374
1375         if ( !action.IsEmpty() )
1376         {
1377             return consumer->PerformAction(action, page);
1378         }
1379     }
1380
1381     return wxStdInputHandler::HandleKey(consumer, event, pressed);
1382 }
1383
1384 bool wxStdNotebookInputHandler::HandleMouse(wxInputConsumer *consumer,
1385                                             const wxMouseEvent& event)
1386 {
1387     if ( event.ButtonDown(1) )
1388     {
1389         wxNotebook *notebook = wxStaticCast(consumer->GetInputWindow(), wxNotebook);
1390         int page = notebook->HitTest(event.GetPosition());
1391         if ( page != -1 )
1392         {
1393             consumer->PerformAction(wxACTION_NOTEBOOK_GOTO, page);
1394
1395             return false;
1396         }
1397     }
1398
1399     return wxStdInputHandler::HandleMouse(consumer, event);
1400 }
1401
1402 bool wxStdNotebookInputHandler::HandleMouseMove(wxInputConsumer *consumer,
1403                                                 const wxMouseEvent& event)
1404 {
1405     return wxStdInputHandler::HandleMouseMove(consumer, event);
1406 }
1407
1408 bool
1409 wxStdNotebookInputHandler::HandleFocus(wxInputConsumer *consumer,
1410                                        const wxFocusEvent& WXUNUSED(event))
1411 {
1412     HandleFocusChange(consumer);
1413
1414     return false;
1415 }
1416
1417 bool wxStdNotebookInputHandler::HandleActivation(wxInputConsumer *consumer,
1418                                                  bool WXUNUSED(activated))
1419 {
1420     // we react to the focus change in the same way as to the [de]activation
1421     HandleFocusChange(consumer);
1422
1423     return false;
1424 }
1425
1426 void wxStdNotebookInputHandler::HandleFocusChange(wxInputConsumer *consumer)
1427 {
1428     wxNotebook *notebook = wxStaticCast(consumer->GetInputWindow(), wxNotebook);
1429     notebook->RefreshCurrent();
1430 }
1431
1432 #endif // wxUSE_NOTEBOOK