src/generic/listbkg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/listbkg.cpp
   3 // Purpose:     generic implementation of wxListbook
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     19.08.03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_LISTBOOK
  28
  29 #include "wx/listctrl.h"
  30 #include "wx/statline.h"
  31 #include "wx/listbook.h"
  32 #include "wx/imaglist.h"
  33 #include "wx/settings.h"
  34
  35 // ----------------------------------------------------------------------------
  36 // constants
  37 // ----------------------------------------------------------------------------
  38
  39 // margin between the list and the page, should be bigger than wxStaticLine
  40 // size
  41 const wxCoord MARGIN = 5;
  42
  43 // ----------------------------------------------------------------------------
  44 // various wxWidgets macros
  45 // ----------------------------------------------------------------------------
  46
  47 // check that the page index is valid
  48 #define IS_VALID_PAGE(nPage) ((nPage) < GetPageCount())
  49
  50 // ----------------------------------------------------------------------------
  51 // event table
  52 // ----------------------------------------------------------------------------
  53
  54 IMPLEMENT_DYNAMIC_CLASS(wxListbook, wxControl)
  55 IMPLEMENT_DYNAMIC_CLASS(wxListbookEvent, wxNotifyEvent)
  56
  57 const wxEventType wxEVT_COMMAND_LISTBOOK_PAGE_CHANGING = wxNewEventType();
  58 const wxEventType wxEVT_COMMAND_LISTBOOK_PAGE_CHANGED = wxNewEventType();
  59 const int wxID_LISTBOOKLISTVIEW = wxNewId();
  60
  61 BEGIN_EVENT_TABLE(wxListbook, wxBookCtrlBase)
  62     EVT_SIZE(wxListbook::OnSize)
  63     EVT_LIST_ITEM_SELECTED(wxID_LISTBOOKLISTVIEW, wxListbook::OnListSelected)
  64 END_EVENT_TABLE()
  65
  66 // ============================================================================
  67 // wxListbook implementation
  68 // ============================================================================
  69
  70 // ----------------------------------------------------------------------------
  71 // wxListbook creation
  72 // ----------------------------------------------------------------------------
  73
  74 void wxListbook::Init()
  75 {
  76     m_list = NULL;
  77 #if wxUSE_LINE_IN_LISTBOOK
  78     m_line = NULL;
  79 #endif // wxUSE_LINE_IN_LISTBOOK
  80     m_selection = wxNOT_FOUND;
  81 }
  82
  83 bool
  84 wxListbook::Create(wxWindow *parent,
  85                    wxWindowID id,
  86                    const wxPoint& pos,
  87                    const wxSize& size,
  88                    long style,
  89                    const wxString& name)
  90 {
  91     if ( (style & wxLB_ALIGN_MASK) == wxLB_DEFAULT )
  92     {
  93 #ifdef __WXMAC__
  94         style |= wxLB_TOP;
  95 #else // !__WXMAC__
  96         style |= wxLB_LEFT;
  97 #endif // __WXMAC__/!__WXMAC__
  98     }
  99
 100     // no border for this control, it doesn't look nice together with
 101     // wxListCtrl border
 102     style &= ~wxBORDER_MASK;
 103     style |= wxBORDER_NONE;
 104
 105     if ( !wxControl::Create(parent, id, pos, size, style,
 106                             wxDefaultValidator, name) )
 107         return false;
 108
 109     m_list = new wxListView
 110                  (
 111                     this,
 112                     wxID_LISTBOOKLISTVIEW,
 113                     wxDefaultPosition,
 114                     wxDefaultSize,
 115                     wxLC_ICON | wxLC_SINGLE_SEL |
 116                         (IsVertical() ? wxLC_ALIGN_LEFT : wxLC_ALIGN_TOP)
 117                  );
 118
 119 #if wxUSE_LINE_IN_LISTBOOK
 120     m_line = new wxStaticLine
 121                  (
 122                     this,
 123                     wxID_ANY,
 124                     wxDefaultPosition,
 125                     wxDefaultSize,
 126                     IsVertical() ? wxLI_HORIZONTAL : wxLI_VERTICAL
 127                  );
 128 #endif // wxUSE_LINE_IN_LISTBOOK
 129
 130 #ifdef __WXMSW__
 131     // On XP with themes enabled the GetViewRect used in GetListSize to
 132     // determine the space needed for the list view will incorrectly return
 133     // (0,0,0,0) the first time.  So send a pending event so OnSize will be
 134     // called again after the window is ready to go.  Technically we don't
 135     // need to do this on non-XP windows, but if things are already sized
 136     // correctly then nothing changes and so there is no harm.
 137     wxSizeEvent evt;
 138     GetEventHandler()->AddPendingEvent(evt);
 139 #endif
 140     return true;
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // wxListbook geometry management
 145 // ----------------------------------------------------------------------------
 146
 147 wxSize wxListbook::GetListSize() const
 148 {
 149     const wxSize sizeClient = GetClientSize(),
 150                  sizeBorder = m_list->GetSize() - m_list->GetClientSize(),
 151                  sizeList = m_list->GetViewRect().GetSize() + sizeBorder;
 152
 153     wxSize size;
 154     if ( IsVertical() )
 155     {
 156         size.x = sizeClient.x;
 157         size.y = sizeList.y;
 158     }
 159     else // left/right aligned
 160     {
 161         size.x = sizeList.x;
 162         size.y = sizeClient.y;
 163     }
 164
 165     return size;
 166 }
 167
 168 wxRect wxListbook::GetPageRect() const
 169 {
 170     const wxSize sizeList = m_list->GetSize();
 171
 172     wxPoint pt;
 173     wxRect rectPage(pt, GetClientSize());
 174     switch ( GetWindowStyle() & wxLB_ALIGN_MASK )
 175     {
 176         default:
 177             wxFAIL_MSG( _T("unexpected wxListbook alignment") );
 178             // fall through
 179
 180         case wxLB_TOP:
 181             rectPage.y = sizeList.y + MARGIN;
 182             // fall through
 183
 184         case wxLB_BOTTOM:
 185             rectPage.height -= sizeList.y + MARGIN;
 186             break;
 187
 188         case wxLB_LEFT:
 189             rectPage.x = sizeList.x + MARGIN;
 190             // fall through
 191
 192         case wxLB_RIGHT:
 193             rectPage.width -= sizeList.x + MARGIN;
 194             break;
 195     }
 196
 197     return rectPage;
 198 }
 199
 200 void wxListbook::OnSize(wxSizeEvent& event)
 201 {
 202     event.Skip();
 203
 204     if ( !m_list )
 205     {
 206         // we're not fully created yet
 207         return;
 208     }
 209
 210     // arrange the icons before calling SetClientSize(), otherwise it wouldn't
 211     // account for the scrollbars the list control might need and, at least
 212     // under MSW, we'd finish with an ugly looking list control with both
 213     // vertical and horizontal scrollbar (with one of them being added because
 214     // the other one is not accounted for in client size computations)
 215     m_list->Arrange();
 216
 217     // resize the list control and the page area to fit inside our new size
 218     const wxSize sizeClient = GetClientSize(),
 219                  sizeBorder = m_list->GetSize() - m_list->GetClientSize(),
 220                  sizeList = GetListSize();
 221
 222     m_list->SetClientSize( sizeList.x - sizeBorder.x, sizeList.y - sizeBorder.y );
 223
 224     const wxSize sizeNew = m_list->GetSize();
 225     wxPoint posList;
 226     switch ( GetWindowStyle() & wxLB_ALIGN_MASK )
 227     {
 228         default:
 229             wxFAIL_MSG( _T("unexpected wxListbook alignment") );
 230             // fall through
 231
 232         case wxLB_TOP:
 233         case wxLB_LEFT:
 234             // posList is already ok
 235             break;
 236
 237         case wxLB_BOTTOM:
 238             posList.y = sizeClient.y - sizeNew.y;
 239             break;
 240
 241         case wxLB_RIGHT:
 242             posList.x = sizeClient.x - sizeNew.x;
 243             break;
 244     }
 245
 246     if ( m_list->GetPosition() != posList )
 247         m_list->Move(posList);
 248
 249 #if wxUSE_LINE_IN_LISTBOOK
 250     if ( m_line )
 251     {
 252         wxRect rectLine(sizeClient);
 253
 254         switch ( GetWindowStyle() & wxLB_ALIGN_MASK )
 255         {
 256             case wxLB_TOP:
 257                 rectLine.y = sizeNew.y + 1;
 258                 rectLine.height = MARGIN - 2;
 259                 break;
 260
 261             case wxLB_BOTTOM:
 262                 rectLine.height = MARGIN - 2;
 263                 rectLine.y = sizeClient.y - sizeNew.y - rectLine.height;
 264                 break;
 265
 266             case wxLB_LEFT:
 267                 rectLine.x = sizeNew.x + 1;
 268                 rectLine.width = MARGIN - 2;
 269                 break;
 270
 271             case wxLB_RIGHT:
 272                 rectLine.width = MARGIN - 2;
 273                 rectLine.x = sizeClient.x - sizeNew.x - rectLine.width;
 274                 break;
 275         }
 276
 277         m_line->SetSize(rectLine);
 278     }
 279 #endif // wxUSE_LINE_IN_LISTBOOK
 280
 281     // resize the currently shown page
 282     if (m_selection != wxNOT_FOUND )
 283     {
 284         wxWindow *page = m_pages[m_selection];
 285         wxCHECK_RET( page, _T("NULL page in wxListbook?") );
 286         page->SetSize(GetPageRect());
 287     }
 288 }
 289
 290 wxSize wxListbook::CalcSizeFromPage(const wxSize& sizePage) const
 291 {
 292     // we need to add the size of the list control and the margin
 293     const wxSize sizeList = GetListSize();
 294
 295     wxSize size = sizePage;
 296     if ( IsVertical() )
 297     {
 298         size.y += sizeList.y + MARGIN;
 299     }
 300     else // left/right aligned
 301     {
 302         size.x += sizeList.x + MARGIN;
 303     }
 304
 305     return size;
 306 }
 307
 308
 309 // ----------------------------------------------------------------------------
 310 // accessing the pages
 311 // ----------------------------------------------------------------------------
 312
 313 bool wxListbook::SetPageText(size_t n, const wxString& strText)
 314 {
 315     m_list->SetItemText(n, strText);
 316
 317     return true;
 318 }
 319
 320 wxString wxListbook::GetPageText(size_t n) const
 321 {
 322     return m_list->GetItemText(n);
 323 }
 324
 325 int wxListbook::GetPageImage(size_t WXUNUSED(n)) const
 326 {
 327     wxFAIL_MSG( _T("wxListbook::GetPageImage() not implemented") );
 328
 329     return wxNOT_FOUND;
 330 }
 331
 332 bool wxListbook::SetPageImage(size_t n, int imageId)
 333 {
 334     return m_list->SetItemImage(n, imageId);
 335 }
 336
 337 // ----------------------------------------------------------------------------
 338 // image list stuff
 339 // ----------------------------------------------------------------------------
 340
 341 void wxListbook::SetImageList(wxImageList *imageList)
 342 {
 343     m_list->SetImageList(imageList, wxIMAGE_LIST_NORMAL);
 344
 345     wxBookCtrlBase::SetImageList(imageList);
 346 }
 347
 348 // ----------------------------------------------------------------------------
 349 // selection
 350 // ----------------------------------------------------------------------------
 351
 352 int wxListbook::GetSelection() const
 353 {
 354     return m_selection;
 355 }
 356
 357 int wxListbook::SetSelection(size_t n)
 358 {
 359     wxCHECK_MSG( IS_VALID_PAGE(n), wxNOT_FOUND,
 360                  wxT("invalid page index in wxListbook::SetSelection()") );
 361
 362     const int oldSel = m_selection;
 363
 364     if ( int(n) != m_selection )
 365     {
 366         wxListbookEvent event(wxEVT_COMMAND_LISTBOOK_PAGE_CHANGING, m_windowId);
 367         event.SetSelection(n);
 368         event.SetOldSelection(m_selection);
 369         event.SetEventObject(this);
 370         if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
 371         {
 372             if ( m_selection != wxNOT_FOUND )
 373                 m_pages[m_selection]->Hide();
 374
 375             wxWindow *page = m_pages[n];
 376             page->SetSize(GetPageRect());
 377             page->Show();
 378
 379             // change m_selection now to ignore the selection change event
 380             m_selection = n;
 381             m_list->Select(n);
 382             m_list->Focus(n);
 383
 384             // program allows the page change
 385             event.SetEventType(wxEVT_COMMAND_LISTBOOK_PAGE_CHANGED);
 386             (void)GetEventHandler()->ProcessEvent(event);
 387         }
 388     }
 389
 390     return oldSel;
 391 }
 392
 393 // ----------------------------------------------------------------------------
 394 // adding/removing the pages
 395 // ----------------------------------------------------------------------------
 396
 397 bool
 398 wxListbook::InsertPage(size_t n,
 399                        wxWindow *page,
 400                        const wxString& text,
 401                        bool bSelect,
 402                        int imageId)
 403 {
 404     if ( !wxBookCtrlBase::InsertPage(n, page, text, bSelect, imageId) )
 405         return false;
 406
 407     m_list->InsertItem(n, text, imageId);
 408
 409     // if the inserted page is before the selected one, we must update the
 410     // index of the selected page
 411     if ( int(n) <= m_selection )
 412     {
 413         // one extra page added
 414         m_selection++;
 415         m_list->Select(m_selection);
 416         m_list->Focus(m_selection);
 417     }
 418
 419     // some page should be selected: either this one or the first one if there
 420     // is still no selection
 421     int selNew = -1;
 422     if ( bSelect )
 423         selNew = n;
 424     else if ( m_selection == -1 )
 425         selNew = 0;
 426
 427     if ( selNew != m_selection )
 428         page->Hide();
 429
 430     if ( selNew != -1 )
 431         SetSelection(selNew);
 432
 433     InvalidateBestSize();
 434     m_list->Arrange();
 435     return true;
 436 }
 437
 438 wxWindow *wxListbook::DoRemovePage(size_t page)
 439 {
 440     const size_t page_count = GetPageCount();
 441     wxWindow *win = wxBookCtrlBase::DoRemovePage(page);
 442
 443     if ( win )
 444     {
 445         m_list->DeleteItem(page);
 446
 447         if (m_selection >= (int)page)
 448         {
 449             // force new sel valid if possible
 450             int sel = m_selection - 1;
 451             if (page_count == 1)
 452                 sel = wxNOT_FOUND;
 453             else if ((page_count == 2) || (sel == -1))
 454                 sel = 0;
 455
 456             // force sel invalid if deleting current page - don't try to hide it
 457             m_selection = (m_selection == (int)page) ? wxNOT_FOUND : m_selection - 1;
 458
 459             if ((sel != wxNOT_FOUND) && (sel != m_selection))
 460                 SetSelection(sel);
 461         }
 462
 463         m_list->Arrange();
 464     }
 465
 466     return win;
 467 }
 468
 469
 470 bool wxListbook::DeleteAllPages()
 471 {
 472     m_list->DeleteAllItems();
 473     return wxBookCtrlBase::DeleteAllPages();
 474 }
 475
 476 // ----------------------------------------------------------------------------
 477 // wxListbook events
 478 // ----------------------------------------------------------------------------
 479
 480 void wxListbook::OnListSelected(wxListEvent& eventList)
 481 {
 482     const int selNew = eventList.GetIndex();
 483
 484     if ( selNew == m_selection )
 485     {
 486         // this event can only come from our own Select(m_selection) below
 487         // which we call when the page change is vetoed, so we should simply
 488         // ignore it
 489         return;
 490     }
 491
 492     SetSelection(selNew);
 493
 494     // change wasn't allowed, return to previous state
 495     if (m_selection != selNew)
 496     {
 497         m_list->Select(m_selection);
 498         m_list->Focus(m_selection);
 499     }
 500 }
 501
 502 #endif // wxUSE_LISTBOOK
 503