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   #include "wx/msw/gnuwin32/extra.h"
  46 #endif
  47 #endif
  48
  49 #if !defined(__GNUWIN32__) || defined(__TWIN32__)
  50   #include <commctrl.h>
  51 #endif
  52
  53 // ----------------------------------------------------------------------------
  54 // macros
  55 // ----------------------------------------------------------------------------
  56
  57 // check that the page index is valid
  58 #define IS_VALID_PAGE(nPage) (((nPage) >= 0) && ((nPage) < GetPageCount()))
  59
  60 // hide the ugly cast
  61 #define m_hwnd    (HWND)GetHWND()
  62
  63 // ----------------------------------------------------------------------------
  64 // event table
  65 // ----------------------------------------------------------------------------
  66
  67 #if !USE_SHARED_LIBRARIES
  68   BEGIN_EVENT_TABLE(wxNotebook, wxControl)
  69     EVT_NOTEBOOK_PAGE_CHANGED(-1, wxNotebook::OnSelChange)
  70
  71     EVT_SIZE(wxNotebook::OnSize)
  72
  73     EVT_SET_FOCUS(wxNotebook::OnSetFocus)
  74
  75     EVT_NAVIGATION_KEY(wxNotebook::OnNavigationKey)
  76   END_EVENT_TABLE()
  77
  78   IMPLEMENT_DYNAMIC_CLASS(wxNotebook, wxControl)
  79   IMPLEMENT_DYNAMIC_CLASS(wxNotebookEvent, wxNotifyEvent)
  80 #endif
  81
  82 // ============================================================================
  83 // implementation
  84 // ============================================================================
  85
  86 // ----------------------------------------------------------------------------
  87 // wxNotebook construction
  88 // ----------------------------------------------------------------------------
  89
  90 // common part of all ctors
  91 void wxNotebook::Init()
  92 {
  93   m_pImageList = NULL;
  94   m_nSelection = -1;
  95 }
  96
  97 // default for dynamic class
  98 wxNotebook::wxNotebook()
  99 {
 100   Init();
 101 }
 102
 103 // the same arguments as for wxControl
 104 wxNotebook::wxNotebook(wxWindow *parent,
 105                        wxWindowID id,
 106                        const wxPoint& pos,
 107                        const wxSize& size,
 108                        long style,
 109                        const wxString& name)
 110 {
 111   Init();
 112
 113   Create(parent, id, pos, size, style, name);
 114 }
 115
 116 // Create() function
 117 bool wxNotebook::Create(wxWindow *parent,
 118                         wxWindowID id,
 119                         const wxPoint& pos,
 120                         const wxSize& size,
 121                         long style,
 122                         const wxString& name)
 123 {
 124   // base init
 125   CreateBase(parent, id, pos, size, style, name);
 126
 127   // colors and font
 128   m_backgroundColour = wxColour(GetSysColor(COLOR_BTNFACE));
 129   m_foregroundColour = *wxBLACK ;
 130
 131   // style
 132   m_windowStyle = style | wxTAB_TRAVERSAL;
 133
 134   long tabStyle = WS_CHILD | WS_VISIBLE | WS_TABSTOP | TCS_TABS;
 135
 136   if (m_windowStyle & wxCLIP_CHILDREN)
 137     tabStyle |= WS_CLIPCHILDREN;
 138   if ( m_windowStyle & wxTC_MULTILINE )
 139     tabStyle |= TCS_MULTILINE;
 140   if ( m_windowStyle & wxBORDER )
 141     tabStyle &= WS_BORDER;
 142   if (m_windowStyle & wxNB_FIXEDWIDTH)
 143     tabStyle |= TCS_FIXEDWIDTH ;
 144
 145   if ( !MSWCreate(GetId(), GetParent(), WC_TABCONTROL,
 146                   this, NULL, pos.x, pos.y, size.x, size.y,
 147                   tabStyle, NULL, 0) )
 148   {
 149     return FALSE;
 150   }
 151
 152   // Not all compilers recognise SetWindowFont
 153   ::SendMessage(GetHwnd(), WM_SETFONT,
 154                 (WPARAM)::GetStockObject(DEFAULT_GUI_FONT), TRUE);
 155
 156
 157   if ( parent != NULL )
 158     parent->AddChild(this);
 159
 160   SubclassWin(m_hWnd);
 161
 162   return TRUE;
 163 }
 164
 165 // dtor
 166 wxNotebook::~wxNotebook()
 167 {
 168 }
 169
 170 // ----------------------------------------------------------------------------
 171 // wxNotebook accessors
 172 // ----------------------------------------------------------------------------
 173 int wxNotebook::GetPageCount() const
 174 {
 175   // consistency check
 176   wxASSERT( (int)m_aPages.Count() == TabCtrl_GetItemCount(m_hwnd) );
 177
 178   return m_aPages.Count();
 179 }
 180
 181 int wxNotebook::GetRowCount() const
 182 {
 183   return TabCtrl_GetRowCount(m_hwnd);
 184 }
 185
 186 int wxNotebook::SetSelection(int nPage)
 187 {
 188   wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, _T("notebook page out of range") );
 189
 190   ChangePage(m_nSelection, nPage);
 191
 192   return TabCtrl_SetCurSel(m_hwnd, nPage);
 193 }
 194
 195 void wxNotebook::AdvanceSelection(bool bForward)
 196 {
 197   int nSel = GetSelection();
 198   int nMax = GetPageCount() - 1;
 199   if ( bForward )
 200     SetSelection(nSel == nMax ? 0 : nSel + 1);
 201   else
 202     SetSelection(nSel == 0 ? nMax : nSel - 1);
 203 }
 204
 205 bool wxNotebook::SetPageText(int nPage, const wxString& strText)
 206 {
 207   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 208
 209   TC_ITEM tcItem;
 210   tcItem.mask = TCIF_TEXT;
 211   tcItem.pszText = (wxChar *)strText.c_str();
 212
 213   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 214 }
 215
 216 wxString wxNotebook::GetPageText(int nPage) const
 217 {
 218   wxCHECK_MSG( IS_VALID_PAGE(nPage), _T(""), _T("notebook page out of range") );
 219
 220   wxChar buf[256];
 221   TC_ITEM tcItem;
 222   tcItem.mask = TCIF_TEXT;
 223   tcItem.pszText = buf;
 224   tcItem.cchTextMax = WXSIZEOF(buf);
 225
 226   wxString str;
 227   if ( TabCtrl_GetItem(m_hwnd, nPage, &tcItem) )
 228     str = tcItem.pszText;
 229
 230   return str;
 231 }
 232
 233 int wxNotebook::GetPageImage(int nPage) const
 234 {
 235   wxCHECK_MSG( IS_VALID_PAGE(nPage), -1, _T("notebook page out of range") );
 236
 237   TC_ITEM tcItem;
 238   tcItem.mask = TCIF_IMAGE;
 239
 240   return TabCtrl_GetItem(m_hwnd, nPage, &tcItem) ? tcItem.iImage : -1;
 241 }
 242
 243 bool wxNotebook::SetPageImage(int nPage, int nImage)
 244 {
 245   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 246
 247   TC_ITEM tcItem;
 248   tcItem.mask = TCIF_IMAGE;
 249   tcItem.iImage = nImage;
 250
 251   return TabCtrl_SetItem(m_hwnd, nPage, &tcItem) != 0;
 252 }
 253
 254 void wxNotebook::SetImageList(wxImageList* imageList)
 255 {
 256   m_pImageList = imageList;
 257   TabCtrl_SetImageList(m_hwnd, (HIMAGELIST)imageList->GetHIMAGELIST());
 258 }
 259
 260
 261 // Windows-only at present. Also, you must use the wxNB_FIXEDWIDTH
 262 // style.
 263 void wxNotebook::SetTabSize(const wxSize& sz)
 264 {
 265     ::SendMessage(GetHwnd(), TCM_SETITEMSIZE, 0, MAKELPARAM(sz.x, sz.y));
 266 }
 267
 268 // ----------------------------------------------------------------------------
 269 // wxNotebook operations
 270 // ----------------------------------------------------------------------------
 271
 272 // remove one page from the notebook
 273 bool wxNotebook::DeletePage(int nPage)
 274 {
 275   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 276
 277   if ( m_nSelection == nPage ) {
 278       // advance selection backwards - the page being deleted shouldn't be left
 279       // selected
 280       AdvanceSelection(FALSE);
 281   }
 282
 283   TabCtrl_DeleteItem(m_hwnd, nPage);
 284
 285   delete m_aPages[nPage];
 286   m_aPages.Remove(nPage);
 287
 288   if ( m_aPages.IsEmpty() ) {
 289       // no selection if the notebook became empty
 290       m_nSelection = -1;
 291   }
 292
 293   return TRUE;
 294 }
 295
 296 // remove one page from the notebook, without deleting
 297 bool wxNotebook::RemovePage(int nPage)
 298 {
 299   wxCHECK_MSG( IS_VALID_PAGE(nPage), FALSE, _T("notebook page out of range") );
 300
 301   TabCtrl_DeleteItem(m_hwnd, nPage);
 302
 303   m_aPages.Remove(nPage);
 304
 305   return TRUE;
 306 }
 307
 308 // remove all pages
 309 bool wxNotebook::DeleteAllPages()
 310 {
 311   int nPageCount = GetPageCount();
 312   int nPage;
 313   for ( nPage = 0; nPage < nPageCount; nPage++ )
 314     delete m_aPages[nPage];
 315
 316   m_aPages.Clear();
 317
 318   TabCtrl_DeleteAllItems(m_hwnd);
 319
 320   return TRUE;
 321 }
 322
 323 // add a page to the notebook
 324 bool wxNotebook::AddPage(wxNotebookPage *pPage,
 325                          const wxString& strText,
 326                          bool bSelect,
 327                          int imageId)
 328 {
 329   return InsertPage(GetPageCount(), pPage, strText, bSelect, imageId);
 330 }
 331
 332 // same as AddPage() but does it at given position
 333 bool wxNotebook::InsertPage(int nPage,
 334                             wxNotebookPage *pPage,
 335                             const wxString& strText,
 336                             bool bSelect,
 337                             int imageId)
 338 {
 339   wxASSERT( pPage != NULL );
 340   wxCHECK( IS_VALID_PAGE(nPage) || nPage == GetPageCount(), FALSE );
 341
 342   // add the tab to the control
 343   TC_ITEM tcItem;
 344   tcItem.mask    = 0;
 345
 346   if (imageId != -1)
 347   {
 348     tcItem.mask |= TCIF_IMAGE;
 349     tcItem.iImage  = imageId;
 350   }
 351   else
 352     tcItem.iImage  = 0;
 353
 354   if (!strText.IsEmpty())
 355   {
 356     tcItem.mask    |= TCIF_TEXT;
 357     tcItem.pszText = (wxChar *)strText.c_str();
 358   }
 359   else
 360     tcItem.pszText = (wxChar *) NULL;
 361
 362   if ( TabCtrl_InsertItem(m_hwnd, nPage, &tcItem) == -1 ) {
 363     wxLogError(_T("Can't create the notebook page '%s'."), strText.c_str());
 364     return FALSE;
 365   }
 366
 367   // save the pointer to the page
 368   m_aPages.Insert(pPage, nPage);
 369
 370   // some page must be selected: either this one or the first one if there is
 371   // still no selection
 372   if ( bSelect )
 373     m_nSelection = nPage;
 374   else if ( m_nSelection == -1 )
 375     m_nSelection = 0;
 376
 377   // don't show pages by default (we'll need to adjust their size first)
 378   HWND hwnd = GetWinHwnd(pPage);
 379   SetWindowLong(hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) & ~WS_VISIBLE);
 380
 381   // this updates internal flag too - otherwise it will get out of sync
 382   pPage->Show(FALSE);
 383
 384   // FIXME this is ugly, I'm breaking my own rules... but needed to get display
 385   //       right (why?)
 386   wxSizeEvent event;
 387   OnSize(event);
 388
 389   return TRUE;
 390 }
 391
 392 // ----------------------------------------------------------------------------
 393 // wxNotebook callbacks
 394 // ----------------------------------------------------------------------------
 395
 396 void wxNotebook::OnSize(wxSizeEvent& event)
 397 {
 398   // make sure the current page is shown and has focus (it's useful because all
 399   // pages are created invisible initially)
 400   if ( m_nSelection != -1 ) {
 401     wxNotebookPage *pPage = m_aPages[m_nSelection];
 402     pPage->Show(TRUE);
 403     pPage->SetFocus();
 404   }
 405
 406   // fit the notebook page to the tab control's display area
 407   RECT rc;
 408   rc.left = rc.top = 0;
 409   GetSize((int *)&rc.right, (int *)&rc.bottom);
 410
 411   TabCtrl_AdjustRect(m_hwnd, FALSE, &rc);
 412   size_t nCount = m_aPages.Count();
 413   for ( size_t nPage = 0; nPage < nCount; nPage++ ) {
 414     wxNotebookPage *pPage = m_aPages[nPage];
 415     pPage->SetSize(rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top);
 416     if ( pPage->GetAutoLayout() )
 417       pPage->Layout();
 418   }
 419
 420   event.Skip();
 421 }
 422
 423 void wxNotebook::OnSelChange(wxNotebookEvent& event)
 424 {
 425   // is it our tab control?
 426   if ( event.GetEventObject() == this )
 427   {
 428       // don't call ChangePage() here because it will generate redundant
 429       // notification events
 430       int sel = event.GetOldSelection();
 431       if ( sel != -1 )
 432         m_aPages[sel]->Show(FALSE);
 433
 434       sel = event.GetSelection();
 435       if ( sel != -1 )
 436       {
 437         wxNotebookPage *pPage = m_aPages[sel];
 438         pPage->Show(TRUE);
 439         pPage->SetFocus();
 440       }
 441
 442       m_nSelection = sel;
 443   }
 444
 445   // we want to give others a chance to process this message as well
 446   event.Skip();
 447 }
 448
 449 void wxNotebook::OnSetFocus(wxFocusEvent& event)
 450 {
 451   // set focus to the currently selected page if any
 452   if ( m_nSelection != -1 )
 453     m_aPages[m_nSelection]->SetFocus();
 454
 455   event.Skip();
 456 }
 457
 458 void wxNotebook::OnNavigationKey(wxNavigationKeyEvent& event)
 459 {
 460   if ( event.IsWindowChange() ) {
 461     // change pages
 462     AdvanceSelection(event.GetDirection());
 463   }
 464   else {
 465     // pass to the parent
 466     if ( GetParent() ) {
 467       event.SetCurrentFocus(this);
 468       GetParent()->GetEventHandler()->ProcessEvent(event);
 469     }
 470   }
 471 }
 472
 473 // ----------------------------------------------------------------------------
 474 // wxNotebook base class virtuals
 475 // ----------------------------------------------------------------------------
 476
 477 // override these 2 functions to do nothing: everything is done in OnSize
 478
 479 void wxNotebook::SetConstraintSizes(bool /* recurse */)
 480 {
 481   // don't set the sizes of the pages - their correct size is not yet known
 482   wxControl::SetConstraintSizes(FALSE);
 483 }
 484
 485 bool wxNotebook::DoPhase(int /* nPhase */)
 486 {
 487   return TRUE;
 488 }
 489
 490 bool wxNotebook::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM* result)
 491 {
 492   wxNotebookEvent event(wxEVT_NULL, m_windowId);
 493
 494   NMHDR* hdr = (NMHDR *)lParam;
 495   switch ( hdr->code ) {
 496     case TCN_SELCHANGE:
 497       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
 498       break;
 499
 500     case TCN_SELCHANGING:
 501       event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGING);
 502       break;
 503
 504     default:
 505       return wxControl::MSWOnNotify(idCtrl, lParam, result);
 506   }
 507
 508   event.SetSelection(TabCtrl_GetCurSel(m_hwnd));
 509   event.SetOldSelection(m_nSelection);
 510   event.SetEventObject(this);
 511   event.SetInt(idCtrl);
 512
 513   bool processed = GetEventHandler()->ProcessEvent(event);
 514   *result = !event.IsAllowed();
 515   return processed;
 516 }
 517
 518 // ----------------------------------------------------------------------------
 519 // wxNotebook helper functions
 520 // ----------------------------------------------------------------------------
 521
 522 // hide the currently active 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   if ( nOldSel != -1 )
 552     m_aPages[nOldSel]->Show(FALSE);
 553
 554   wxNotebookPage *pPage = m_aPages[nSel];
 555   pPage->Show(TRUE);
 556   pPage->SetFocus();
 557
 558   event.SetEventType(wxEVT_COMMAND_NOTEBOOK_PAGE_CHANGED);
 559   ProcessEvent(event);
 560
 561   m_nSelection = nSel;
 562   s_bInsideChangePage = FALSE;
 563 }