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