src/generic/notebook.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        notebook.cpp
   3 // Purpose:     implementation of wxNotebook
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifndef __PALMOS__
  21
  22 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  23 #pragma implementation "notebook.h"
  24 #endif
  25
  26 #ifdef __VMS
  27 #pragma message disable unscomzer
  28 #endif
  29
  30 // For compilers that support precompilation, includes "wx.h".
  31 #include "wx/wxprec.h"
  32
  33 #ifdef __BORLANDC__
  34 #pragma hdrstop
  35 #endif
  36
  37 #include  "wx/string.h"
  38 #include  "wx/log.h"
  39 #include  "wx/settings.h"
  40 #include  "wx/generic/imaglist.h"
  41 #include  "wx/notebook.h"
  42 #include  "wx/dcclient.h"
  43 #include  "wx/generic/tabg.h"
  44
  45 // ----------------------------------------------------------------------------
  46 // macros
  47 // ----------------------------------------------------------------------------
  48
  49 // check that the page index is valid
  50 #define IS_VALID_PAGE(nPage) (((nPage) >= 0) && ((nPage) < GetPageCount()))
  51
  52 // ----------------------------------------------------------------------------
  53 // event table
  54 // ----------------------------------------------------------------------------
  55
  56 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED)
  57 DEFINE_EVENT_TYPE(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING)
  58
  59 BEGIN_EVENT_TABLE(wxNotebook, wxControl)
  60     EVT_NOTEBOOK_PAGE_CHANGED(wxID_ANY, wxNotebook::OnSelChange)
  61     EVT_SIZE(wxNotebook::OnSize)
  62     EVT_PAINT(wxNotebook::OnPaint)
  63     EVT_MOUSE_EVENTS(wxNotebook::OnMouseEvent)
  64     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
  65     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
  66 END_EVENT_TABLE()
  67
  68 IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
  69 IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxCommandEvent)
  70
  71 // ============================================================================
  72 // implementation
  73 // ============================================================================
  74
  75 // ============================================================================
  76 // Private class
  77 // ============================================================================
  78
  79 // This reuses wxTabView to draw the tabs.
  80 class WXDLLEXPORT wxNotebookTabView: public wxTabView
  81 {
  82 DECLARE_DYNAMIC_CLASS(wxNotebookTabView)
  83 public:
  84   wxNotebookTabView(wxNotebook* notebook, long style = wxTAB_STYLE_DRAW_BOX | wxTAB_STYLE_COLOUR_INTERIOR);
  85   ~wxNotebookTabView(void);
  86
  87   // Called when a tab is activated
  88   virtual void OnTabActivate(int activateId, int deactivateId);
  89   // Allows vetoing
  90   virtual bool OnTabPreActivate(int activateId, int deactivateId);
  91
  92 protected:
  93    wxNotebook*      m_notebook;
  94 };
  95
  96 // ----------------------------------------------------------------------------
  97 // wxNotebook construction
  98 // ----------------------------------------------------------------------------
  99
 100 // common part of all ctors
 101 void wxNotebook::Init()
 102 {
 103     m_tabView = (wxNotebookTabView*) NULL;
 104     m_nSelection = -1;
 105 }
 106
 107 // default for dynamic class
 108 wxNotebook::wxNotebook()
 109 {
 110     Init();
 111 }
 112
 113 // the same arguments as for wxControl
 114 wxNotebook::wxNotebook(wxWindow *parent,
 115                        wxWindowID id,
 116                        const wxPoint& pos,
 117                        const wxSize& size,
 118                        long style,
 119                        const wxString& name)
 120 {
 121     Init();
 122
 123     Create(parent, id, pos, size, style, name);
 124 }
 125
 126 // Create() function
 127 bool wxNotebook::Create(wxWindow *parent,
 128                         wxWindowID id,
 129                         const wxPoint& pos,
 130                         const wxSize& size,
 131                         long style,
 132                         const wxString& name)
 133 {
 134     // base init
 135     SetName(name);
 136
 137     m_windowId = id == wxID_ANY ? NewControlId() : id;
 138
 139     if (!wxControl::Create(parent, id, pos, size, style|wxNO_BORDER, wxDefaultValidator, name))
 140         return false;
 141
 142     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
 143
 144     SetTabView(new wxNotebookTabView(this));
 145
 146     return true;
 147 }
 148
 149 // dtor
 150 wxNotebook::~wxNotebook()
 151 {
 152     delete m_tabView;
 153 }
 154
 155 // ----------------------------------------------------------------------------
 156 // wxNotebook accessors
 157 // ----------------------------------------------------------------------------
 158 int wxNotebook::GetRowCount() const
 159 {
 160     // TODO
 161     return 0;
 162 }
 163
 164 int wxNotebook::SetSelection(size_t nPage)
 165 {
 166     wxASSERT( IS_VALID_PAGE(nPage) );
 167
 168     wxNotebookPage* pPage = GetPage(nPage);
 169
 170     m_tabView->SetTabSelection((int) (long) pPage);
 171
 172     // TODO
 173     return 0;
 174 }
 175
 176 #if 0
 177 void wxNotebook::AdvanceSelection(bool bForward)
 178 {
 179     int nSel = GetSelection();
 180     int nMax = GetPageCount() - 1;
 181     if ( bForward )
 182         SetSelection(nSel == nMax ? 0 : nSel + 1);
 183     else
 184         SetSelection(nSel == 0 ? nMax : nSel - 1);
 185 }
 186 #endif
 187
 188 bool wxNotebook::SetPageText(size_t nPage, const wxString& strText)
 189 {
 190     wxASSERT( IS_VALID_PAGE(nPage) );
 191
 192     wxNotebookPage* page = GetPage(nPage);
 193     if (page)
 194     {
 195         m_tabView->SetTabText((int) (long) page, strText);
 196         Refresh();
 197         return true;
 198     }
 199
 200     return false;
 201 }
 202
 203 wxString wxNotebook::GetPageText(size_t nPage) const
 204 {
 205     wxASSERT( IS_VALID_PAGE(nPage) );
 206
 207     wxNotebookPage* page = ((wxNotebook*)this)->GetPage(nPage);
 208     if (page)
 209         return m_tabView->GetTabText((int) (long) page);
 210     else
 211         return wxEmptyString;
 212 }
 213
 214 int wxNotebook::GetPageImage(size_t nPage) const
 215 {
 216     wxASSERT( IS_VALID_PAGE(nPage) );
 217
 218     // TODO
 219     return 0;
 220 }
 221
 222 bool wxNotebook::SetPageImage(size_t nPage, int nImage)
 223 {
 224     wxASSERT( IS_VALID_PAGE(nPage) );
 225
 226     // TODO
 227     return false;
 228 }
 229
 230 // set the size (the same for all pages)
 231 void wxNotebook::SetPageSize(const wxSize& size)
 232 {
 233     // TODO
 234 }
 235
 236 // set the padding between tabs (in pixels)
 237 void wxNotebook::SetPadding(const wxSize& padding)
 238 {
 239     // TODO
 240 }
 241
 242 // set the size of the tabs for wxNB_FIXEDWIDTH controls
 243 void wxNotebook::SetTabSize(const wxSize& sz)
 244 {
 245     // TODO
 246 }
 247
 248 // ----------------------------------------------------------------------------
 249 // wxNotebook operations
 250 // ----------------------------------------------------------------------------
 251
 252 // remove one page from the notebook and delete it
 253 bool wxNotebook::DeletePage(size_t nPage)
 254 {
 255     wxCHECK( IS_VALID_PAGE(nPage), false );
 256
 257     if (m_nSelection != -1)
 258     {
 259         m_pages[m_nSelection]->Show(false);
 260         m_pages[m_nSelection]->Lower();
 261     }
 262
 263     wxNotebookPage* pPage = GetPage(nPage);
 264
 265     m_tabView->RemoveTab((int) (long) pPage);
 266
 267     m_pages.Remove(pPage);
 268     delete pPage;
 269
 270     if (m_pages.GetCount() == 0)
 271     {
 272       m_nSelection = -1;
 273       m_tabView->SetTabSelection(-1, false);
 274     }
 275     else if (m_nSelection > -1)
 276     {
 277       m_nSelection = -1;
 278
 279       m_tabView->SetTabSelection((int) (long) GetPage(0), false);
 280
 281       if (m_nSelection != 0)
 282         ChangePage(-1, 0);
 283     }
 284
 285     RefreshLayout(false);
 286
 287     return true;
 288 }
 289
 290 bool wxNotebook::DeletePage(wxNotebookPage* page)
 291 {
 292     int pagePos = FindPagePosition(page);
 293     if (pagePos > -1)
 294         return DeletePage(pagePos);
 295     else
 296         return false;
 297 }
 298
 299 bool wxNotebook::RemovePage(size_t nPage)
 300 {
 301     return DoRemovePage(nPage) != NULL;
 302 }
 303
 304 // remove one page from the notebook
 305 wxWindow* wxNotebook::DoRemovePage(size_t nPage)
 306 {
 307     wxCHECK( IS_VALID_PAGE(nPage), false );
 308
 309     m_pages[nPage]->Show(false);
 310     //    m_pages[nPage]->Lower();
 311
 312     wxNotebookPage* pPage = GetPage(nPage);
 313
 314     m_tabView->RemoveTab((int) (long) pPage);
 315
 316     m_pages.Remove(pPage);
 317
 318     if (m_pages.GetCount() == 0)
 319     {
 320       m_nSelection = -1;
 321       m_tabView->SetTabSelection(-1, true);
 322     }
 323     else if (m_nSelection > -1)
 324     {
 325       // Only change the selection if the page we
 326       // deleted was the selection.
 327       if (nPage == (size_t)m_nSelection)
 328       {
 329          m_nSelection = -1;
 330          // Select the first tab. Generates a ChangePage.
 331          m_tabView->SetTabSelection(0, true);
 332       }
 333       else
 334       {
 335         // We must adjust which tab we think is selected.
 336         // If greater than the page we deleted, it must be moved down
 337         // a notch.
 338         if (size_t(m_nSelection) > nPage)
 339           m_nSelection -- ;
 340       }
 341     }
 342
 343     RefreshLayout(false);
 344
 345     return pPage;
 346 }
 347
 348 bool wxNotebook::RemovePage(wxNotebookPage* page)
 349 {
 350     int pagePos = FindPagePosition(page);
 351     if (pagePos > -1)
 352         return RemovePage(pagePos);
 353     else
 354         return false;
 355 }
 356
 357 // Find the position of the wxNotebookPage, -1 if not found.
 358 int wxNotebook::FindPagePosition(wxNotebookPage* page) const
 359 {
 360     size_t nPageCount = GetPageCount();
 361     size_t nPage;
 362     for ( nPage = 0; nPage < nPageCount; nPage++ )
 363         if (m_pages[nPage] == page)
 364             return nPage;
 365     return -1;
 366 }
 367
 368 // remove all pages
 369 bool wxNotebook::DeleteAllPages()
 370 {
 371     m_tabView->ClearTabs(true);
 372
 373     size_t nPageCount = GetPageCount();
 374     size_t nPage;
 375     for ( nPage = 0; nPage < nPageCount; nPage++ )
 376         delete m_pages[nPage];
 377
 378     m_pages.Clear();
 379
 380     return true;
 381 }
 382
 383 // same as AddPage() but does it at given position
 384 bool wxNotebook::InsertPage(size_t nPage,
 385                             wxNotebookPage *pPage,
 386                             const wxString& strText,
 387                             bool bSelect,
 388                             int imageId)
 389 {
 390     wxASSERT( pPage != NULL );
 391     wxCHECK( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), false );
 392
 393     m_tabView->AddTab((int) (long) pPage, strText);
 394
 395     if (!bSelect)
 396       pPage->Show(false);
 397
 398     // save the pointer to the page
 399     m_pages.Insert(pPage, nPage);
 400
 401     if (bSelect)
 402     {
 403         // This will cause ChangePage to be called, via OnSelPage
 404
 405         m_tabView->SetTabSelection((int) (long) pPage, true);
 406     }
 407
 408     // some page must be selected: either this one or the first one if there is
 409     // still no selection
 410     if ( m_nSelection == -1 )
 411       ChangePage(-1, 0);
 412
 413     RefreshLayout(false);
 414
 415     return true;
 416 }
 417
 418 // ----------------------------------------------------------------------------
 419 // wxNotebook callbacks
 420 // ----------------------------------------------------------------------------
 421
 422 // @@@ OnSize() is used for setting the font when it's called for the first
 423 //     time because doing it in ::Create() doesn't work (for unknown reasons)
 424 void wxNotebook::OnSize(wxSizeEvent& event)
 425 {
 426     static bool s_bFirstTime = true;
 427     if ( s_bFirstTime ) {
 428         // TODO: any first-time-size processing.
 429         s_bFirstTime = false;
 430     }
 431
 432     RefreshLayout();
 433
 434     // Processing continues to next OnSize
 435     event.Skip();
 436 }
 437
 438 // This was supposed to cure the non-display of the notebook
 439 // until the user resizes the window.
 440 // What's going on?
 441 void wxNotebook::OnInternalIdle()
 442 {
 443     wxWindow::OnInternalIdle();
 444
 445 #if 0
 446     static bool s_bFirstTime = true;
 447     if ( s_bFirstTime ) {
 448       /*
 449       wxSize sz(GetSize());
 450       sz.x ++;
 451       SetSize(sz);
 452       sz.x --;
 453       SetSize(sz);
 454       */
 455
 456       /*
 457       wxSize sz(GetSize());
 458       wxSizeEvent sizeEvent(sz, GetId());
 459       sizeEvent.SetEventObject(this);
 460       GetEventHandler()->ProcessEvent(sizeEvent);
 461       Refresh();
 462       */
 463       s_bFirstTime = false;
 464     }
 465 #endif
 466 }
 467
 468 // Implementation: calculate the layout of the view rect
 469 // and resize the children if required
 470 bool wxNotebook::RefreshLayout(bool force)
 471 {
 472     if (m_tabView)
 473     {
 474         wxRect oldRect = m_tabView->GetViewRect();
 475
 476         int cw, ch;
 477         GetClientSize(& cw, & ch);
 478
 479         int tabHeight = m_tabView->GetTotalTabHeight();
 480         wxRect rect;
 481         rect.x = 4;
 482         rect.y = tabHeight + 4;
 483         rect.width = cw - 8;
 484         rect.height = ch - 4 - rect.y ;
 485
 486         m_tabView->SetViewRect(rect);
 487
 488         m_tabView->LayoutTabs();
 489
 490         // Need to do it a 2nd time to get the tab height with
 491         // the new view width, since changing the view width changes the
 492         // tab layout.
 493         tabHeight = m_tabView->GetTotalTabHeight();
 494         rect.x = 4;
 495         rect.y = tabHeight + 4;
 496         rect.width = cw - 8;
 497         rect.height = ch - 4 - rect.y ;
 498
 499         m_tabView->SetViewRect(rect);
 500
 501         m_tabView->LayoutTabs();
 502
 503         if (!force && (rect == oldRect))
 504           return false;
 505
 506         // fit the notebook page to the tab control's display area
 507
 508         size_t nCount = m_pages.Count();
 509         for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
 510             wxNotebookPage *pPage = m_pages[nPage];
 511             wxRect clientRect = GetAvailableClientSize();
 512             if (pPage->IsShown())
 513             {
 514                 pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
 515                 if ( pPage->GetAutoLayout() )
 516                    pPage->Layout();
 517             }
 518         }
 519         Refresh();
 520     }
 521     return true;
 522 }
 523
 524 void wxNotebook::OnSelChange(wxNotebookEvent& event)
 525 {
 526     // is it our tab control?
 527     if ( event.GetEventObject() == this )
 528     {
 529         if (event.GetSelection() != m_nSelection)
 530           ChangePage(event.GetOldSelection(), event.GetSelection());
 531     }
 532
 533     // we want to give others a chance to process this message as well
 534     event.Skip();
 535 }
 536
 537 void wxNotebook::OnSetFocus(wxFocusEvent& event)
 538 {
 539     // set focus to the currently selected page if any
 540     if ( m_nSelection != -1 )
 541         m_pages[m_nSelection]->SetFocus();
 542
 543     event.Skip();
 544 }
 545
 546 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 547 {
 548     if ( event.IsWindowChange() ) {
 549         // change pages
 550         AdvanceSelection(event.GetDirection());
 551     }
 552     else {
 553         // pass to the parent
 554         if ( GetParent() ) {
 555             event.SetCurrentFocus(this);
 556             GetParent()->ProcessEvent(event);
 557         }
 558     }
 559 }
 560
 561 // ----------------------------------------------------------------------------
 562 // wxNotebook base class virtuals
 563 // ----------------------------------------------------------------------------
 564
 565 // override these 2 functions to do nothing: everything is done in OnSize
 566
 567 void wxNotebook::SetConstraintSizes(bool /* recurse */)
 568 {
 569     // don't set the sizes of the pages - their correct size is not yet known
 570     wxControl::SetConstraintSizes(false);
 571 }
 572
 573 bool wxNotebook::DoPhase(int /* nPhase */)
 574 {
 575     return true;
 576 }
 577
 578 void wxNotebook::Command(wxCommandEvent& WXUNUSED(event))
 579 {
 580     wxFAIL_MSG(wxT("wxNotebook::Command not implemented"));
 581 }
 582
 583 // ----------------------------------------------------------------------------
 584 // wxNotebook helper functions
 585 // ----------------------------------------------------------------------------
 586
 587 // hide the currently active panel and show the new one
 588 void wxNotebook::ChangePage(int nOldSel, int nSel)
 589 {
 590   //  cout << "ChangePage: " << nOldSel << ", " << nSel << "\n";
 591     wxASSERT( nOldSel != nSel ); // impossible
 592
 593     if ( nOldSel != -1 ) {
 594         m_pages[nOldSel]->Show(false);
 595         m_pages[nOldSel]->Lower();
 596     }
 597
 598     wxNotebookPage *pPage = m_pages[nSel];
 599
 600     wxRect clientRect = GetAvailableClientSize();
 601     pPage->SetSize(clientRect.x, clientRect.y, clientRect.width, clientRect.height);
 602
 603     Refresh();
 604
 605     pPage->Show(true);
 606     pPage->Raise();
 607     pPage->SetFocus();
 608
 609     m_nSelection = nSel;
 610 }
 611
 612 void wxNotebook::OnMouseEvent(wxMouseEvent& event)
 613 {
 614   if (m_tabView)
 615     m_tabView->OnEvent(event);
 616 }
 617
 618 void wxNotebook::OnPaint(wxPaintEvent& WXUNUSED(event) )
 619 {
 620     wxPaintDC dc(this);
 621     if (m_tabView)
 622         m_tabView->Draw(dc);
 623 }
 624
 625 wxRect wxNotebook::GetAvailableClientSize()
 626 {
 627     int cw, ch;
 628     GetClientSize(& cw, & ch);
 629
 630     int tabHeight = m_tabView->GetTotalTabHeight();
 631
 632     // TODO: these margins should be configurable.
 633     wxRect rect;
 634     rect.x = 6;
 635     rect.y = tabHeight + 6;
 636     rect.width = cw - 12;
 637     rect.height = ch - 4 - rect.y ;
 638
 639     return rect;
 640 }
 641
 642 /*
 643  * wxNotebookTabView
 644  */
 645
 646 IMPLEMENT_CLASS(wxNotebookTabView, wxTabView)
 647
 648 wxNotebookTabView::wxNotebookTabView(wxNotebook *notebook, long style): wxTabView(style)
 649 {
 650   m_notebook = notebook;
 651
 652   m_notebook->SetTabView(this);
 653
 654   SetWindow(m_notebook);
 655 }
 656
 657 wxNotebookTabView::~wxNotebookTabView(void)
 658 {
 659 }
 660
 661 // Called when a tab is activated
 662 void wxNotebookTabView::OnTabActivate(int activateId, int deactivateId)
 663 {
 664   if (!m_notebook)
 665     return;
 666
 667   wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED, m_notebook->GetId());
 668
 669   // Translate from wxTabView's ids (which aren't position-dependent)
 670   // to wxNotebook's (which are).
 671   wxNotebookPage* pActive = (wxNotebookPage*) activateId;
 672   wxNotebookPage* pDeactive = (wxNotebookPage*) deactivateId;
 673
 674   int activatePos = m_notebook->FindPagePosition(pActive);
 675   int deactivatePos = m_notebook->FindPagePosition(pDeactive);
 676
 677   event.SetEventObject(m_notebook);
 678   event.SetSelection(activatePos);
 679   event.SetOldSelection(deactivatePos);
 680   m_notebook->GetEventHandler()->ProcessEvent(event);
 681 }
 682
 683 // Allows Vetoing
 684 bool wxNotebookTabView::OnTabPreActivate(int activateId, int deactivateId)
 685 {
 686   bool retval = true;
 687
 688   if (m_notebook)
 689   {
 690     wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_notebook->GetId());
 691
 692     // Translate from wxTabView's ids (which aren't position-dependent)
 693     // to wxNotebook's (which are).
 694     wxNotebookPage* pActive = (wxNotebookPage*) activateId;
 695     wxNotebookPage* pDeactive = (wxNotebookPage*) deactivateId;
 696
 697     int activatePos = m_notebook->FindPagePosition(pActive);
 698     int deactivatePos = m_notebook->FindPagePosition(pDeactive);
 699
 700     event.SetEventObject(m_notebook);
 701     event.SetSelection(activatePos);
 702     event.SetOldSelection(deactivatePos);
 703     if (m_notebook->GetEventHandler()->ProcessEvent(event))
 704     {
 705       retval = event.IsAllowed();
 706     }
 707   }
 708   return retval;
 709 }
 710
 711 #endif // __PALMOS__