src/msw/notebook.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/notebook.cpp
   3 // Purpose:     implementation of wxNotebook
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     11.06.98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "notebook.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 // wxWindows
  24 #ifndef WX_PRECOMP
  25   #include  <wx/string.h>
  26 #endif  // WX_PRECOMP
  27
  28 #include  <wx/log.h>
  29 #include  <wx/imaglist.h>
  30 #include  <wx/event.h>
  31 #include  <wx/control.h>
  32 #include  <wx/notebook.h>
  33
  34 #include  <wx/msw/private.h>
  35
  36 // Windows standard headers
  37 #ifndef   __WIN95__
  38   #error  "wxNotebook is only supported Windows 95 and above"
  39 #endif    //Win95
  40
  41 #include  <windowsx.h>  // for SetWindowFont
  42
  43 #ifndef __TWIN32__
  44 #ifdef __GNUWIN32__
  45 #ifndef wxUSE_NORLANDER_HEADERS
  46   #include "wx/msw/gnuwin32/extra.h"
  47 #endif
  48 #endif
  49 #endif
  50
  51 #if !defined(__GNUWIN32__) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  52   #include <commctrl.h>
  53 #endif
  54
  55 // ----------------------------------------------------------------------------
  56 // macros
  57 // ----------------------------------------------------------------------------
  58
  59 // check that the page index is valid
  60 #define IS_VALID_PAGE(nPage) (((nPage) >= 0) && ((nPage) < GetPageCount()))
  61
  62 // hide the ugly cast
  63 #define m_hwnd    (HWND)GetHWND()
  64
  65 // ----------------------------------------------------------------------------
  66 // event table
  67 // ----------------------------------------------------------------------------
  68
  69 #if !USE_SHARED_LIBRARIES
  70   BEGIN_EVENT_TABLE(wxNotebook, wxControl)
  71     EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)
  72
  73     EVT_SIZE(wxNotebook::OnSize)
  74
  75     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
  76
  77     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
  78   END_EVENT_TABLE()
  79
  80   IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
  81   IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxNotifyEvent)
  82 #endif
  83
  84 // ============================================================================
  85 // implementation
  86 // ============================================================================
  87
  88 // ----------------------------------------------------------------------------
  89 // wxNotebook construction
  90 // ----------------------------------------------------------------------------
  91
  92 // common part of all ctors
  93 void wxNotebook::Init()
  94 {
  95   m_pImageList = NULL;
  96   m_nSelection = -1;
  97 }
  98
  99 // default for dynamic class
 100 wxNotebook::wxNotebook()
 101 {
 102   Init();
 103 }
 104
 105 // the same arguments as for wxControl
 106 wxNotebook::wxNotebook(wxWindow *parent,
 107                        wxWindowID id,
 108                        const wxPoint& pos,
 109                        const wxSize& size,
 110                        long style,
 111                        const wxString& name)
 112 {
 113   Init();
 114
 115   Create(parent, id, pos, size, style, name);
 116 }
 117
 118 // Create() function
 119 bool wxNotebook::Create(wxWindow *parent,
 120                         wxWindowID id,
 121                         const wxPoint& pos,
 122                         const wxSize& size,
 123                         long style,
 124                         const wxString& name)
 125 {
 126   // base init
 127   if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
 128       return FALSE;
 129
 130   // colors and font
 131   m_backgroundColour = wxColour(GetSysColor(COLOR_BTNFACE));
 132   m_foregroundColour = *wxBLACK ;
 133
 134   // style
 135   m_windowStyle = style | wxTAB_TRAVERSAL;
 136
 137   long tabStyle = WS_CHILD | WS_VISIBLE | WS_TABSTOP | TCS_TABS;
 138
 139   if (m_windowStyle & wxCLIP_CHILDREN)
 140     tabStyle |= WS_CLIPCHILDREN;
 141   if ( m_windowStyle & wxTC_MULTILINE )
 142     tabStyle |= TCS_MULTILINE;
 143   if ( m_windowStyle & wxBORDER )
 144     tabStyle &= WS_BORDER;
 145   if (m_windowStyle & wxNB_FIXEDWIDTH)
 146     tabStyle |= TCS_FIXEDWIDTH ;
 147
 148   if ( !MSWCreate(GetId(), GetParent(), WC_TABCONTROL,
 149                   this, NULL, pos.x, pos.y, size.x, size.y,
 150                   tabStyle, NULL, 0) )
 151   {
 152     return FALSE;
 153   }
 154
 155   // Not all compilers recognise SetWindowFont
 156   ::SendMessage(GetHwnd(), WM_SETFONT,
 157                 (WPARAM)::GetStockObject(DEFAULT_GUI_FONT), TRUE);
 158
 159
 160   if ( parent != NULL )
 161     parent->AddChild(this);
 162
 163   SubclassWin(m_hWnd);
 164
 165   return TRUE;
 166 }
 167
 168 // dtor
 169 wxNotebook::~wxNotebook()
 170 {
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // wxNotebook accessors
 175 // ----------------------------------------------------------------------------
 176 int wxNotebook::GetPageCount() const
 177 {
 178   // consistency check
 179   wxASSERT( (int)m_aPages.Count() == TabCtrl_GetItemCount(m_hwnd) );
 180
 181   return m_aPages.Count();
 182 }
 183
 184 int wxNotebook::GetRowCount() const
 185 {
 186   return TabCtrl_GetRowCount(m_hwnd);
 187 }
 188
 189 int wxNotebook::SetSelection(int nPage)
 190 {
 191   wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, _T("notebook page out of range") );
 192
 193   ChangePage(m_nSelection, nPage);
 194
 195   return TabCtrl_SetCurSel(m_hwnd, nPage);
 196 }
 197
 198 void wxNotebook::AdvanceSelection(bool bForward)
 199 {
 200   int nSel = GetSelection();
 201   int nMax = GetPageCount() - 1;
 202   if ( bForward )
 203     SetSelection(nSel == nMax ? 0 : nSel + 1);
 204   else
 205     SetSelection(nSel == 0 ? nMax : nSel - 1);
 206 }
 207
 208 bool wxNotebook::SetPageText(int nPage, const wxString& strText)
 209 {
 210   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 211
 212   TC_ITEM tcItem;
 213   tcItem.mask = TCIF_TEXT;
 214   tcItem.pszText = (wxChar *)strText.c_str();
 215
 216   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 217 }
 218
 219 wxString wxNotebook::GetPageText(int nPage) const
 220 {
 221   wxCHECK_MSG( IS_VALID_PAGE(nPage), _T(""), _T("notebook page out of range") );
 222
 223   wxChar buf[256];
 224   TC_ITEM tcItem;
 225   tcItem.mask = TCIF_TEXT;
 226   tcItem.pszText = buf;
 227   tcItem.cchTextMax = WXSIZEOF(buf);
 228
 229   wxString str;
 230   if ( TabCtrl_GetItem(m_hwnd, nPage, &tcItem) )
 231     str = tcItem.pszText;
 232
 233   return str;
 234 }
 235
 236 int wxNotebook::GetPageImage(int nPage) const
 237 {
 238   wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, _T("notebook page out of range") );
 239
 240   TC_ITEM tcItem;
 241   tcItem.mask = TCIF_IMAGE;
 242
 243   return TabCtrl_GetItem(m_hwnd, nPage, &tcItem) ? tcItem.iImage : -1;
 244 }
 245
 246 bool wxNotebook::SetPageImage(int nPage, int nImage)
 247 {
 248   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 249
 250   TC_ITEM tcItem;
 251   tcItem.mask = TCIF_IMAGE;
 252   tcItem.iImage = nImage;
 253
 254   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 255 }
 256
 257 void wxNotebook::SetImageList(wxImageList* imageList)
 258 {
 259   m_pImageList = imageList;
 260   TabCtrl_SetImageList(m_hwnd, (HIMAGELIST)imageList->GetHIMAGELIST());
 261 }
 262
 263
 264 // Windows-only at present. Also, you must use the wxNB_FIXEDWIDTH
 265 // style.
 266 void wxNotebook::SetTabSize(const wxSize& sz)
 267 {
 268     ::SendMessage(GetHwnd(), TCM_SETITEMSIZE, 0, MAKELPARAM(sz.x, sz.y));
 269 }
 270
 271 // ----------------------------------------------------------------------------
 272 // wxNotebook operations
 273 // ----------------------------------------------------------------------------
 274
 275 // remove one page from the notebook
 276 bool wxNotebook::DeletePage(int nPage)
 277 {
 278   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 279
 280   if ( m_nSelection == nPage ) {
 281       // advance selection backwards - the page being deleted shouldn't be left
 282       // selected
 283       AdvanceSelection(FALSE);
 284   }
 285
 286   TabCtrl_DeleteItem(m_hwnd, nPage);
 287
 288   delete m_aPages[nPage];
 289   m_aPages.Remove(nPage);
 290
 291   if ( m_aPages.IsEmpty() ) {
 292       // no selection if the notebook became empty
 293       m_nSelection = -1;
 294   }
 295
 296   return TRUE;
 297 }
 298
 299 // remove one page from the notebook, without deleting
 300 bool wxNotebook::RemovePage(int nPage)
 301 {
 302   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 303
 304   TabCtrl_DeleteItem(m_hwnd, nPage);
 305
 306   m_aPages.Remove(nPage);
 307
 308   return TRUE;
 309 }
 310
 311 // remove all pages
 312 bool wxNotebook::DeleteAllPages()
 313 {
 314   int nPageCount = GetPageCount();
 315   int nPage;
 316   for ( nPage = 0; nPage < nPageCount; nPage++ )
 317     delete m_aPages[nPage];
 318
 319   m_aPages.Clear();
 320
 321   TabCtrl_DeleteAllItems(m_hwnd);
 322
 323   return TRUE;
 324 }
 325
 326 // add a page to the notebook
 327 bool wxNotebook::AddPage(wxNotebookPage *pPage,
 328                          const wxString& strText,
 329                          bool bSelect,
 330                          int imageId)
 331 {
 332   return InsertPage(GetPageCount(), pPage, strText, bSelect, imageId);
 333 }
 334
 335 // same as AddPage() but does it at given position
 336 bool wxNotebook::InsertPage(int nPage,
 337                             wxNotebookPage *pPage,
 338                             const wxString& strText,
 339                             bool bSelect,
 340                             int imageId)
 341 {
 342   wxASSERT( pPage != NULL );
 343   wxCHECK( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), FALSE );
 344
 345   // do add the tab to the control
 346
 347   // init all fields to 0
 348   TC_ITEM tcItem;
 349   memset(&tcItem, 0, sizeof(tcItem));
 350
 351   if ( imageId != -1 )
 352   {
 353     tcItem.mask |= TCIF_IMAGE;
 354     tcItem.iImage  = imageId;
 355   }
 356
 357   if ( !strText.IsEmpty() )
 358   {
 359     tcItem.mask |= TCIF_TEXT;
 360     tcItem.pszText = (wxChar *)strText.c_str(); // const_cast
 361   }
 362
 363   if ( TabCtrl_InsertItem(m_hwnd, nPage, &tcItem) == -1 ) {
 364     wxLogError(_T("Can't create the notebook page '%s'."), strText.c_str());
 365
 366     return FALSE;
 367   }
 368
 369   // if the inserted page is before the selected one, we must update the
 370   // index of the selected page
 371   if ( nPage <= m_nSelection )
 372   {
 373     // one extra page added
 374     m_nSelection++;
 375   }
 376
 377   // save the pointer to the page
 378   m_aPages.Insert(pPage, nPage);
 379
 380   // don't show pages by default (we'll need to adjust their size first)
 381   HWND hwnd = GetWinHwnd(pPage);
 382   SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_VISIBLE);
 383
 384   // this updates internal flag too - otherwise it will get out of sync
 385   pPage->Show(FALSE);
 386
 387   // some page should be selected: either this one or the first one if there is
 388   // still no selection
 389   int selNew = -1;
 390   if ( bSelect )
 391     selNew = nPage;
 392   else if ( m_nSelection == -1 )
 393     selNew = 0;
 394
 395   if ( selNew != -1 )
 396     SetSelection(selNew);
 397
 398   return TRUE;
 399 }
 400
 401 // ----------------------------------------------------------------------------
 402 // wxNotebook callbacks
 403 // ----------------------------------------------------------------------------
 404
 405 void wxNotebook::OnSize(wxSizeEvent& event)
 406 {
 407   // fit the notebook page to the tab control's display area
 408   RECT rc;
 409   rc.left = rc.top = 0;
 410   GetSize((int *)&rc.right, (int *)&rc.bottom);
 411
 412   TabCtrl_AdjustRect(m_hwnd, FALSE, &rc);
 413   size_t nCount = m_aPages.Count();
 414   for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
 415     wxNotebookPage *pPage = m_aPages[nPage];
 416     pPage->SetSize(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
 417     if ( pPage->GetAutoLayout() )
 418       pPage->Layout();
 419   }
 420
 421   event.Skip();
 422 }
 423
 424 void wxNotebook::OnSelChange(wxNotebookEvent& event)
 425 {
 426   // is it our tab control?
 427   if ( event.GetEventObject() == this )
 428   {
 429       int sel = event.GetOldSelection();
 430       if ( sel != -1 )
 431         m_aPages[sel]->Show(FALSE);
 432
 433       sel = event.GetSelection();
 434       if ( sel != -1 )
 435       {
 436         wxNotebookPage *pPage = m_aPages[sel];
 437         pPage->Show(TRUE);
 438         pPage->SetFocus();
 439       }
 440
 441       m_nSelection = sel;
 442   }
 443
 444   // we want to give others a chance to process this message as well
 445   event.Skip();
 446 }
 447
 448 void wxNotebook::OnSetFocus(wxFocusEvent& event)
 449 {
 450   // set focus to the currently selected page if any
 451   if ( m_nSelection != -1 )
 452     m_aPages[m_nSelection]->SetFocus();
 453
 454   event.Skip();
 455 }
 456
 457 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 458 {
 459   if ( event.IsWindowChange() ) {
 460     // change pages
 461     AdvanceSelection(event.GetDirection());
 462   }
 463   else {
 464     // pass to the parent
 465     if ( GetParent() ) {
 466       event.SetCurrentFocus(this);
 467       GetParent()->GetEventHandler()->ProcessEvent(event);
 468     }
 469   }
 470 }
 471
 472 // ----------------------------------------------------------------------------
 473 // wxNotebook base class virtuals
 474 // ----------------------------------------------------------------------------
 475
 476 // override these 2 functions to do nothing: everything is done in OnSize
 477
 478 void wxNotebook::SetConstraintSizes(bool /* recurse */)
 479 {
 480   // don't set the sizes of the pages - their correct size is not yet known
 481   wxControl::SetConstraintSizes(FALSE);
 482 }
 483
 484 bool wxNotebook::DoPhase(int /* nPhase */)
 485 {
 486   return TRUE;
 487 }
 488
 489 bool wxNotebook::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM* result)
 490 {
 491   wxNotebookEvent event(wxEVT_NULL, m_windowId);
 492
 493   NMHDR* hdr = (NMHDR *)lParam;
 494   switch ( hdr->code ) {
 495     case TCN_SELCHANGE:
 496       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
 497       break;
 498
 499     case TCN_SELCHANGING:
 500       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING);
 501       break;
 502
 503     default:
 504       return wxControl::MSWOnNotify(idCtrl, lParam, result);
 505   }
 506
 507   event.SetSelection(TabCtrl_GetCurSel(m_hwnd));
 508   event.SetOldSelection(m_nSelection);
 509   event.SetEventObject(this);
 510   event.SetInt(idCtrl);
 511
 512   bool processed = GetEventHandler()->ProcessEvent(event);
 513   *result = !event.IsAllowed();
 514   return processed;
 515 }
 516
 517 // ----------------------------------------------------------------------------
 518 // wxNotebook helper functions
 519 // ----------------------------------------------------------------------------
 520
 521 // generate the page changing and changed events, hide the currently active
 522 // panel and show the new one
 523 void wxNotebook::ChangePage(int nOldSel, int nSel)
 524 {
 525   // MT-FIXME should use a real semaphore
 526   static bool s_bInsideChangePage = FALSE;
 527
 528   // when we call ProcessEvent(), our own OnSelChange() is called which calls
 529   // this function - break the infinite loop
 530   if ( s_bInsideChangePage )
 531     return;
 532
 533   // it's not an error (the message may be generated by the tab control itself)
 534   // and it may happen - just do nothing
 535   if ( nSel == nOldSel )
 536     return;
 537
 538   s_bInsideChangePage = TRUE;
 539
 540   wxNotebookEvent event(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING, m_windowId);
 541   event.SetSelection(nSel);
 542   event.SetOldSelection(nOldSel);
 543   event.SetEventObject(this);
 544   if ( ProcessEvent(event) && !event.IsAllowed() )
 545   {
 546     // program doesn't allow the page change
 547     s_bInsideChangePage = FALSE;
 548     return;
 549   }
 550
 551   event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
 552   ProcessEvent(event);
 553
 554   s_bInsideChangePage = FALSE;
 555 }