src/univ/notebook.cpp

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