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