src/generic/choicbkg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/choicbkg.cpp
   3 // Purpose:     generic implementation of wxChoicebook
   4 // Author:      Vadim Zeitlin
   5 // Modified by: Wlodzimierz ABX Skiba from generic/listbkg.cpp
   6 // Created:     15.09.04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Vadim Zeitlin, Wlodzimierz Skiba
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "choicebook.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_CHOICEBOOK
  32
  33 #include "wx/choice.h"
  34 #include "wx/choicebk.h"
  35 #include "wx/imaglist.h"
  36 #include "wx/settings.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // constants
  40 // ----------------------------------------------------------------------------
  41
  42 // margin between the choice and the page
  43 #if defined(__WXWINCE__)
  44 const wxCoord MARGIN = 1;
  45 #else
  46 const wxCoord MARGIN = 5;
  47 #endif
  48
  49 // ----------------------------------------------------------------------------
  50 // various wxWidgets macros
  51 // ----------------------------------------------------------------------------
  52
  53 // check that the page index is valid
  54 #define IS_VALID_PAGE(nPage) ((nPage) < GetPageCount())
  55
  56 // ----------------------------------------------------------------------------
  57 // event table
  58 // ----------------------------------------------------------------------------
  59
  60 IMPLEMENT_DYNAMIC_CLASS(wxChoicebook, wxControl)
  61 IMPLEMENT_DYNAMIC_CLASS(wxChoicebookEvent, wxNotifyEvent)
  62
  63 const wxEventType wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGING = wxNewEventType();
  64 const wxEventType wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGED = wxNewEventType();
  65 const int wxID_CHOICEBOOKCHOICE = wxNewId();
  66
  67 BEGIN_EVENT_TABLE(wxChoicebook, wxBookCtrlBase)
  68     EVT_SIZE(wxChoicebook::OnSize)
  69     EVT_CHOICE(wxID_CHOICEBOOKCHOICE, wxChoicebook::OnChoiceSelected)
  70 END_EVENT_TABLE()
  71
  72 // ============================================================================
  73 // wxChoicebook implementation
  74 // ============================================================================
  75
  76 // ----------------------------------------------------------------------------
  77 // wxChoicebook creation
  78 // ----------------------------------------------------------------------------
  79
  80 void wxChoicebook::Init()
  81 {
  82     m_choice = NULL;
  83     m_selection = wxNOT_FOUND;
  84 }
  85
  86 bool
  87 wxChoicebook::Create(wxWindow *parent,
  88                      wxWindowID id,
  89                      const wxPoint& pos,
  90                      const wxSize& size,
  91                      long style,
  92                      const wxString& name)
  93 {
  94     if ( (style & wxCHB_ALIGN_MASK) == wxCHB_DEFAULT )
  95     {
  96         style |= wxCHB_TOP;
  97     }
  98
  99     // no border for this control, it doesn't look nice together with
 100     // wxChoice border
 101     style &= ~wxBORDER_MASK;
 102     style |= wxBORDER_NONE;
 103
 104     if ( !wxControl::Create(parent, id, pos, size, style,
 105                             wxDefaultValidator, name) )
 106         return false;
 107
 108     m_choice = new wxChoice
 109                  (
 110                     this,
 111                     wxID_CHOICEBOOKCHOICE,
 112                     wxDefaultPosition,
 113                     wxDefaultSize
 114                  );
 115
 116     return true;
 117 }
 118
 119 // ----------------------------------------------------------------------------
 120 // wxChoicebook geometry management
 121 // ----------------------------------------------------------------------------
 122
 123 wxSize wxChoicebook::GetChoiceSize() const
 124 {
 125     const wxSize sizeClient = GetClientSize(),
 126                  sizeChoice = m_choice->GetBestSize();
 127
 128     wxSize size;
 129     if ( IsVertical() )
 130     {
 131         size.x = sizeClient.x;
 132         size.y = sizeChoice.y;
 133     }
 134     else // left/right aligned
 135     {
 136         size.x = sizeChoice.x;
 137         size.y = sizeClient.y;
 138     }
 139
 140     return size;
 141 }
 142
 143 wxRect wxChoicebook::GetPageRect() const
 144 {
 145     const wxSize sizeChoice = m_choice->GetSize();
 146
 147     wxPoint pt;
 148     wxRect rectPage(pt, GetClientSize());
 149     switch ( GetWindowStyle() & wxCHB_ALIGN_MASK )
 150     {
 151         default:
 152             wxFAIL_MSG( _T("unexpected wxChoicebook alignment") );
 153             // fall through
 154
 155         case wxCHB_TOP:
 156             rectPage.y = sizeChoice.y + MARGIN;
 157             // fall through
 158
 159         case wxCHB_BOTTOM:
 160             rectPage.height -= sizeChoice.y + MARGIN;
 161             break;
 162
 163         case wxCHB_LEFT:
 164             rectPage.x = sizeChoice.x + MARGIN;
 165             // fall through
 166
 167         case wxCHB_RIGHT:
 168             rectPage.width -= sizeChoice.x + MARGIN;
 169             break;
 170     }
 171
 172     return rectPage;
 173 }
 174
 175 void wxChoicebook::OnSize(wxSizeEvent& event)
 176 {
 177     event.Skip();
 178
 179     if ( !m_choice )
 180     {
 181         // we're not fully created yet
 182         return;
 183     }
 184
 185     // resize the choice control and the page area to fit inside our new size
 186     const wxSize sizeClient = GetClientSize(),
 187                  sizeChoice = GetChoiceSize();
 188
 189     wxPoint posChoice;
 190     switch ( GetWindowStyle() & wxCHB_ALIGN_MASK )
 191     {
 192         default:
 193             wxFAIL_MSG( _T("unexpected wxChoicebook alignment") );
 194             // fall through
 195
 196         case wxCHB_TOP:
 197         case wxCHB_LEFT:
 198             // posChoice is already ok
 199             break;
 200
 201         case wxCHB_BOTTOM:
 202             posChoice.y = sizeClient.y - sizeChoice.y;
 203             break;
 204
 205         case wxCHB_RIGHT:
 206             posChoice.x = sizeClient.x - sizeChoice.x;
 207             break;
 208     }
 209
 210     m_choice->Move(posChoice.x, posChoice.y);
 211     m_choice->SetSize(sizeChoice.x, sizeChoice.y);
 212
 213     // resize the currently shown page
 214     if ( m_selection != wxNOT_FOUND )
 215     {
 216         wxWindow *page = m_pages[m_selection];
 217         wxCHECK_RET( page, _T("NULL page in wxChoicebook?") );
 218         page->SetSize(GetPageRect());
 219     }
 220 }
 221
 222 wxSize wxChoicebook::CalcSizeFromPage(const wxSize& sizePage) const
 223 {
 224     // we need to add the size of the choice control and the margin
 225     const wxSize sizeChoice = GetChoiceSize();
 226
 227     wxSize size = sizePage;
 228     if ( IsVertical() )
 229     {
 230         size.y += sizeChoice.y + MARGIN;
 231     }
 232     else // left/right aligned
 233     {
 234         size.x += sizeChoice.x + MARGIN;
 235     }
 236
 237     return size;
 238 }
 239
 240
 241 // ----------------------------------------------------------------------------
 242 // accessing the pages
 243 // ----------------------------------------------------------------------------
 244
 245 bool wxChoicebook::SetPageText(size_t n, const wxString& strText)
 246 {
 247     m_choice->SetString(n, strText);
 248
 249     return true;
 250 }
 251
 252 wxString wxChoicebook::GetPageText(size_t n) const
 253 {
 254     return m_choice->GetString(n);
 255 }
 256
 257 int wxChoicebook::GetPageImage(size_t WXUNUSED(n)) const
 258 {
 259     wxFAIL_MSG( _T("wxChoicebook::GetPageImage() not implemented") );
 260
 261     return -1;
 262 }
 263
 264 bool wxChoicebook::SetPageImage(size_t WXUNUSED(n), int WXUNUSED(imageId))
 265 {
 266     wxFAIL_MSG( _T("wxChoicebook::SetPageImage() not implemented") );
 267
 268     return false;
 269 }
 270
 271 // ----------------------------------------------------------------------------
 272 // image list stuff
 273 // ----------------------------------------------------------------------------
 274
 275 void wxChoicebook::SetImageList(wxImageList *imageList)
 276 {
 277     // TODO: can be implemented in form of static bitmap near choice control
 278
 279     wxBookCtrlBase::SetImageList(imageList);
 280 }
 281
 282 // ----------------------------------------------------------------------------
 283 // selection
 284 // ----------------------------------------------------------------------------
 285
 286 int wxChoicebook::GetSelection() const
 287 {
 288     return m_selection;
 289 }
 290
 291 int wxChoicebook::SetSelection(size_t n)
 292 {
 293     wxCHECK_MSG( IS_VALID_PAGE(n), wxNOT_FOUND,
 294                  wxT("invalid page index in wxChoicebook::SetSelection()") );
 295
 296     const int oldSel = m_selection;
 297
 298     if ( int(n) != m_selection )
 299     {
 300         wxChoicebookEvent event(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGING, m_windowId);
 301         event.SetSelection(n);
 302         event.SetOldSelection(m_selection);
 303         event.SetEventObject(this);
 304         if ( !GetEventHandler()->ProcessEvent(event) || event.IsAllowed() )
 305         {
 306             if ( m_selection != wxNOT_FOUND )
 307                 m_pages[m_selection]->Hide();
 308
 309             wxWindow *page = m_pages[n];
 310             page->SetSize(GetPageRect());
 311             page->Show();
 312
 313             // change m_selection now to ignore the selection change event
 314             m_selection = n;
 315             m_choice->Select(n);
 316
 317             // program allows the page change
 318             event.SetEventType(wxEVT_COMMAND_CHOICEBOOK_PAGE_CHANGED);
 319             (void)GetEventHandler()->ProcessEvent(event);
 320         }
 321     }
 322
 323     return oldSel;
 324 }
 325
 326 // ----------------------------------------------------------------------------
 327 // adding/removing the pages
 328 // ----------------------------------------------------------------------------
 329
 330 bool
 331 wxChoicebook::InsertPage(size_t n,
 332                          wxWindow *page,
 333                          const wxString& text,
 334                          bool bSelect,
 335                          int imageId)
 336 {
 337     if ( !wxBookCtrlBase::InsertPage(n, page, text, bSelect, imageId) )
 338         return false;
 339
 340     m_choice->Insert(text, n);
 341
 342     // if the inserted page is before the selected one, we must update the
 343     // index of the selected page
 344     if ( int(n) <= m_selection )
 345     {
 346         // one extra page added
 347         m_selection++;
 348         m_choice->Select(m_selection);
 349     }
 350
 351     // some page should be selected: either this one or the first one if there
 352     // is still no selection
 353     int selNew = -1;
 354     if ( bSelect )
 355         selNew = n;
 356     else if ( m_selection == -1 )
 357         selNew = 0;
 358
 359     if ( selNew != m_selection )
 360         page->Hide();
 361
 362     if ( selNew != -1 )
 363         SetSelection(selNew);
 364
 365     InvalidateBestSize();
 366     return true;
 367 }
 368
 369 wxWindow *wxChoicebook::DoRemovePage(size_t page)
 370 {
 371     const int page_count = GetPageCount();
 372     wxWindow *win = wxBookCtrlBase::DoRemovePage(page);
 373
 374     if ( win )
 375     {
 376         m_choice->Delete(page);
 377
 378         if (m_selection >= (int)page)
 379         {
 380             // force new sel valid if possible
 381             int sel = m_selection - 1;
 382             if (page_count == 1)
 383                 sel = wxNOT_FOUND;
 384             else if ((page_count == 2) || (sel == -1))
 385                 sel = 0;
 386
 387             // force sel invalid if deleting current page - don't try to hide it
 388             m_selection = (m_selection == (int)page) ? wxNOT_FOUND : m_selection - 1;
 389
 390             if ((sel != wxNOT_FOUND) && (sel != m_selection))
 391                 SetSelection(sel);
 392            }
 393     }
 394
 395     return win;
 396 }
 397
 398
 399 bool wxChoicebook::DeleteAllPages()
 400 {
 401     m_choice->Clear();
 402     return wxBookCtrlBase::DeleteAllPages();
 403 }
 404
 405 // ----------------------------------------------------------------------------
 406 // wxChoicebook events
 407 // ----------------------------------------------------------------------------
 408
 409 void wxChoicebook::OnChoiceSelected(wxCommandEvent& eventChoice)
 410 {
 411     const int selNew = eventChoice.GetSelection();
 412
 413     if ( selNew == m_selection )
 414     {
 415         // this event can only come from our own Select(m_selection) below
 416         // which we call when the page change is vetoed, so we should simply
 417         // ignore it
 418         return;
 419     }
 420
 421     SetSelection(selNew);
 422
 423     // change wasn't allowed, return to previous state
 424     if (m_selection != selNew)
 425         m_choice->Select(m_selection);
 426 }
 427
 428 #endif // wxUSE_CHOICEBOOK