src/common/framecmn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        common/framecmn.cpp
   3 // Purpose:     common (for all platforms) wxFrame functions
   4 // Author:      Julian Smart, Vadim Zeitlin
   5 // Created:     01/02/97
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling and Julian Smart
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  20     #pragma implementation "framebase.h"
  21 #endif
  22
  23 // For compilers that support precompilation, includes "wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx/frame.h"
  32     #include "wx/menu.h"
  33     #include "wx/menuitem.h"
  34     #include "wx/dcclient.h"
  35 #endif // WX_PRECOMP
  36
  37 #if wxUSE_TOOLBAR
  38     #include "wx/toolbar.h"
  39 #endif
  40 #if wxUSE_STATUSBAR
  41     #include "wx/statusbr.h"
  42 #endif
  43
  44 // ----------------------------------------------------------------------------
  45 // event table
  46 // ----------------------------------------------------------------------------
  47
  48 #if wxUSE_MENUS && wxUSE_STATUSBAR
  49
  50 BEGIN_EVENT_TABLE(wxFrameBase, wxTopLevelWindow)
  51     EVT_MENU_OPEN(wxFrameBase::OnMenuOpen)
  52     EVT_MENU_CLOSE(wxFrameBase::OnMenuClose)
  53
  54     EVT_MENU_HIGHLIGHT_ALL(wxFrameBase::OnMenuHighlight)
  55 END_EVENT_TABLE()
  56
  57 #endif // wxUSE_MENUS && wxUSE_STATUSBAR
  58
  59 // ============================================================================
  60 // implementation
  61 // ============================================================================
  62
  63 // ----------------------------------------------------------------------------
  64 // construction/destruction
  65 // ----------------------------------------------------------------------------
  66
  67 wxFrameBase::wxFrameBase()
  68 {
  69 #if wxUSE_MENUS
  70     m_frameMenuBar = NULL;
  71 #endif // wxUSE_MENUS
  72
  73 #if wxUSE_TOOLBAR
  74     m_frameToolBar = NULL;
  75 #endif // wxUSE_TOOLBAR
  76
  77 #if wxUSE_STATUSBAR
  78     m_frameStatusBar = NULL;
  79 #endif // wxUSE_STATUSBAR
  80
  81     m_statusBarPane = 0;
  82 }
  83
  84 wxFrameBase::~wxFrameBase()
  85 {
  86     // this destructor is required for Darwin
  87 }
  88
  89 wxFrame *wxFrameBase::New(wxWindow *parent,
  90                           wxWindowID id,
  91                           const wxString& title,
  92                           const wxPoint& pos,
  93                           const wxSize& size,
  94                           long style,
  95                           const wxString& name)
  96 {
  97     return new wxFrame(parent, id, title, pos, size, style, name);
  98 }
  99
 100 void wxFrameBase::DeleteAllBars()
 101 {
 102 #if wxUSE_MENUS
 103     if ( m_frameMenuBar )
 104     {
 105         delete m_frameMenuBar;
 106         m_frameMenuBar = (wxMenuBar *) NULL;
 107     }
 108 #endif // wxUSE_MENUS
 109
 110 #if wxUSE_STATUSBAR
 111     if ( m_frameStatusBar )
 112     {
 113         delete m_frameStatusBar;
 114         m_frameStatusBar = (wxStatusBar *) NULL;
 115     }
 116 #endif // wxUSE_STATUSBAR
 117
 118 #if wxUSE_TOOLBAR
 119     if ( m_frameToolBar )
 120     {
 121         delete m_frameToolBar;
 122         m_frameToolBar = (wxToolBar *) NULL;
 123     }
 124 #endif // wxUSE_TOOLBAR
 125 }
 126
 127 bool wxFrameBase::IsOneOfBars(const wxWindow *win) const
 128 {
 129 #if wxUSE_MENUS
 130     if ( win == GetMenuBar() )
 131         return true;
 132 #endif // wxUSE_MENUS
 133
 134 #if wxUSE_STATUSBAR
 135     if ( win == GetStatusBar() )
 136         return true;
 137 #endif // wxUSE_STATUSBAR
 138
 139 #if wxUSE_TOOLBAR
 140     if ( win == GetToolBar() )
 141         return true;
 142 #endif // wxUSE_TOOLBAR
 143
 144     return false;
 145 }
 146
 147 // ----------------------------------------------------------------------------
 148 // wxFrame size management: we exclude the areas taken by menu/status/toolbars
 149 // from the client area, so the client area is what's really available for the
 150 // frame contents
 151 // ----------------------------------------------------------------------------
 152
 153 // get the origin of the client area in the client coordinates
 154 wxPoint wxFrameBase::GetClientAreaOrigin() const
 155 {
 156     wxPoint pt = wxTopLevelWindow::GetClientAreaOrigin();
 157
 158 #if wxUSE_TOOLBAR && !defined(__WXUNIVERSAL__) && \
 159   (!defined(__WXWINCE__) || (_WIN32_WCE >= 400 && !defined(WIN32_PLATFORM_PSPC) && !defined(WIN32_PLATFORM_WFSP)))
 160     wxToolBar *toolbar = GetToolBar();
 161     if ( toolbar && toolbar->IsShown() )
 162     {
 163         int w, h;
 164         toolbar->GetSize(&w, &h);
 165
 166         if ( toolbar->GetWindowStyleFlag() & wxTB_VERTICAL )
 167         {
 168             pt.x += w;
 169         }
 170         else
 171         {
 172             pt.y += h;
 173         }
 174     }
 175 #endif // wxUSE_TOOLBAR
 176
 177     return pt;
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // misc
 182 // ----------------------------------------------------------------------------
 183
 184 bool wxFrameBase::ProcessCommand(int id)
 185 {
 186 #if wxUSE_MENUS
 187     wxMenuBar *bar = GetMenuBar();
 188     if ( !bar )
 189         return false;
 190
 191     wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, id);
 192     commandEvent.SetEventObject(this);
 193
 194     wxMenuItem *item = bar->FindItem(id);
 195     if (item)
 196     {
 197         if (!item->IsEnabled())
 198             return true;
 199
 200         if (item->IsCheckable())
 201         {
 202             item->Toggle();
 203
 204             // use the new value
 205             commandEvent.SetInt(item->IsChecked());
 206         }
 207     }
 208
 209     GetEventHandler()->ProcessEvent(commandEvent);
 210     return true;
 211 #else // !wxUSE_MENUS
 212     return false;
 213 #endif // wxUSE_MENUS/!wxUSE_MENUS
 214 }
 215
 216 // Do the UI update processing for this window. This is
 217 // provided for the application to call if it wants to
 218 // force a UI update, particularly for the menus and toolbar.
 219 void wxFrameBase::UpdateWindowUI(long flags)
 220 {
 221     wxWindowBase::UpdateWindowUI(flags);
 222
 223 #if wxUSE_TOOLBAR
 224     if (GetToolBar())
 225         GetToolBar()->UpdateWindowUI(flags);
 226 #endif
 227
 228 #if wxUSE_MENUS
 229     if (GetMenuBar())
 230     {
 231         if ((flags & wxUPDATE_UI_FROMIDLE) && !wxUSE_IDLEMENUUPDATES)
 232         {
 233             // If coming from an idle event, we only
 234             // want to update the menus if we're
 235             // in the wxUSE_IDLEMENUUPDATES configuration:
 236             // so if we're not, do nothing
 237         }
 238         else
 239             DoMenuUpdates();
 240     }
 241 #endif // wxUSE_MENUS
 242 }
 243
 244 // ----------------------------------------------------------------------------
 245 // event handlers for status bar updates from menus
 246 // ----------------------------------------------------------------------------
 247
 248 #if wxUSE_MENUS && wxUSE_STATUSBAR
 249
 250 void wxFrameBase::OnMenuHighlight(wxMenuEvent& event)
 251 {
 252 #if wxUSE_STATUSBAR
 253     (void)ShowMenuHelp(GetStatusBar(), event.GetMenuId());
 254 #endif // wxUSE_STATUSBAR
 255 }
 256
 257 #if !wxUSE_IDLEMENUUPDATES
 258 void wxFrameBase::OnMenuOpen(wxMenuEvent& event)
 259 #else
 260 void wxFrameBase::OnMenuOpen(wxMenuEvent& WXUNUSED(event))
 261 #endif
 262 {
 263 #if !wxUSE_IDLEMENUUPDATES
 264     DoMenuUpdates(event.GetMenu());
 265 #endif // !wxUSE_IDLEMENUUPDATES
 266 }
 267
 268 void wxFrameBase::OnMenuClose(wxMenuEvent& WXUNUSED(event))
 269 {
 270     // do we have real status text to restore?
 271     if ( m_oldStatusText.length() > 1 || m_oldStatusText[0u] )
 272     {
 273         if ( m_statusBarPane >= 0 )
 274         {
 275             wxStatusBar *statbar = GetStatusBar();
 276             if ( statbar )
 277                 statbar->SetStatusText(m_oldStatusText, m_statusBarPane);
 278         }
 279
 280         m_oldStatusText.clear();
 281     }
 282 }
 283
 284 #endif // wxUSE_MENUS && wxUSE_STATUSBAR
 285
 286 // Implement internal behaviour (menu updating on some platforms)
 287 void wxFrameBase::OnInternalIdle()
 288 {
 289     wxTopLevelWindow::OnInternalIdle();
 290
 291 #if wxUSE_MENUS && wxUSE_IDLEMENUUPDATES
 292     if (wxUpdateUIEvent::CanUpdate(this))
 293         DoMenuUpdates();
 294 #endif
 295 }
 296
 297 // ----------------------------------------------------------------------------
 298 // status bar stuff
 299 // ----------------------------------------------------------------------------
 300
 301 #if wxUSE_STATUSBAR
 302
 303 wxStatusBar* wxFrameBase::CreateStatusBar(int number,
 304                                           long style,
 305                                           wxWindowID id,
 306                                           const wxString& name)
 307 {
 308     // the main status bar can only be created once (or else it should be
 309     // deleted before calling CreateStatusBar() again)
 310     wxCHECK_MSG( !m_frameStatusBar, (wxStatusBar *)NULL,
 311                  wxT("recreating status bar in wxFrame") );
 312
 313     m_frameStatusBar = OnCreateStatusBar( number, style, id, name );
 314     if ( m_frameStatusBar )
 315         PositionStatusBar();
 316
 317     return m_frameStatusBar;
 318 }
 319
 320 wxStatusBar *wxFrameBase::OnCreateStatusBar(int number,
 321                                             long style,
 322                                             wxWindowID id,
 323                                             const wxString& name)
 324 {
 325     wxStatusBar *statusBar = new wxStatusBar(this, id, style, name);
 326
 327     statusBar->SetFieldsCount(number);
 328
 329     return statusBar;
 330 }
 331
 332 void wxFrameBase::SetStatusText(const wxString& text, int number)
 333 {
 334     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 335
 336     m_frameStatusBar->SetStatusText(text, number);
 337 }
 338
 339 void wxFrameBase::SetStatusWidths(int n, const int widths_field[] )
 340 {
 341     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set widths for") );
 342
 343     m_frameStatusBar->SetStatusWidths(n, widths_field);
 344
 345     PositionStatusBar();
 346 }
 347
 348 void wxFrameBase::PushStatusText(const wxString& text, int number)
 349 {
 350     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 351
 352     m_frameStatusBar->PushStatusText(text, number);
 353 }
 354
 355 void wxFrameBase::PopStatusText(int number)
 356 {
 357     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 358
 359     m_frameStatusBar->PopStatusText(number);
 360 }
 361
 362 bool wxFrameBase::ShowMenuHelp(wxStatusBar *WXUNUSED(statbar), int menuId)
 363 {
 364 #if wxUSE_MENUS
 365     // if no help string found, we will clear the status bar text
 366     wxString helpString;
 367     bool show = menuId != wxID_SEPARATOR && menuId != -2 /* wxID_TITLE */;
 368
 369     if ( show )
 370     {
 371         wxMenuBar *menuBar = GetMenuBar();
 372         if ( menuBar )
 373         {
 374             // it's ok if we don't find the item because it might belong
 375             // to the popup menu
 376             wxMenuItem *item = menuBar->FindItem(menuId);
 377             if ( item )
 378                 helpString = item->GetHelp();
 379         }
 380     }
 381
 382     DoGiveHelp(helpString, show);
 383
 384     return !helpString.IsEmpty();
 385 #else // !wxUSE_MENUS
 386     return false;
 387 #endif // wxUSE_MENUS/!wxUSE_MENUS
 388 }
 389
 390 #endif // wxUSE_STATUSBAR
 391
 392 void wxFrameBase::DoGiveHelp(const wxString& text, bool show)
 393 {
 394 #if wxUSE_STATUSBAR
 395     if ( m_statusBarPane < 0 )
 396     {
 397         // status bar messages disabled
 398         return;
 399     }
 400
 401     wxStatusBar *statbar = GetStatusBar();
 402     if ( !statbar )
 403         return;
 404
 405     wxString help;
 406     if ( show )
 407         help = text;
 408
 409     // remember the old status bar text if this is the first time we're called
 410     // since the menu has been opened as we're going to overwrite it in our
 411     // DoGiveHelp() and we want to restore it when the menu is closed
 412     //
 413     // note that it would be logical to do this in OnMenuOpen() but under MSW
 414     // we get an EVT_MENU_HIGHLIGHT before EVT_MENU_OPEN, strangely enough, and
 415     // so this doesn't work and instead we use the ugly trick with using
 416     // special m_oldStatusText value as "menu opened" (but it is arguably
 417     // better than adding yet another member variable to wxFrame on all
 418     // platforms)
 419     if ( m_oldStatusText.empty() )
 420     {
 421         m_oldStatusText = statbar->GetStatusText(m_statusBarPane);
 422         if ( m_oldStatusText.empty() )
 423         {
 424             // use special value to prevent us from doing this the next time
 425             m_oldStatusText += _T('\0');
 426         }
 427     }
 428
 429     statbar->SetStatusText(help, m_statusBarPane);
 430 #endif // wxUSE_STATUSBAR
 431 }
 432
 433
 434 // ----------------------------------------------------------------------------
 435 // toolbar stuff
 436 // ----------------------------------------------------------------------------
 437
 438 #if wxUSE_TOOLBAR
 439
 440 wxToolBar* wxFrameBase::CreateToolBar(long style,
 441                                       wxWindowID id,
 442                                       const wxString& name)
 443 {
 444     // the main toolbar can't be recreated (unless it was explicitly deeleted
 445     // before)
 446     wxCHECK_MSG( !m_frameToolBar, (wxToolBar *)NULL,
 447                  wxT("recreating toolbar in wxFrame") );
 448
 449     if ( style == -1 )
 450     {
 451         // use default style
 452         //
 453         // NB: we don't specify the default value in the method declaration
 454         //     because
 455         //      a) this allows us to have different defaults for different
 456         //         platforms (even if we don't have them right now)
 457         //      b) we don't need to include wx/toolbar.h in the header then
 458         style = wxBORDER_NONE | wxTB_HORIZONTAL | wxTB_FLAT;
 459     }
 460
 461     m_frameToolBar = OnCreateToolBar(style, id, name);
 462
 463     return m_frameToolBar;
 464 }
 465
 466 wxToolBar* wxFrameBase::OnCreateToolBar(long style,
 467                                         wxWindowID id,
 468                                         const wxString& name)
 469 {
 470     return new wxToolBar(this, id,
 471                          wxDefaultPosition, wxDefaultSize,
 472                          style, name);
 473 }
 474
 475 #endif // wxUSE_TOOLBAR
 476
 477 // ----------------------------------------------------------------------------
 478 // menus
 479 // ----------------------------------------------------------------------------
 480
 481 #if wxUSE_MENUS
 482
 483 // update all menus
 484 void wxFrameBase::DoMenuUpdates(wxMenu* menu)
 485 {
 486     wxEvtHandler* source = GetEventHandler();
 487     wxMenuBar* bar = GetMenuBar();
 488
 489     if (menu)
 490         menu->UpdateUI(source);
 491     else if ( bar != NULL )
 492     {
 493         int nCount = bar->GetMenuCount();
 494         for (int n = 0; n < nCount; n++)
 495             bar->GetMenu(n)->UpdateUI(source);
 496     }
 497 }
 498
 499 void wxFrameBase::DetachMenuBar()
 500 {
 501     if ( m_frameMenuBar )
 502     {
 503         m_frameMenuBar->Detach();
 504         m_frameMenuBar = NULL;
 505     }
 506 }
 507
 508 void wxFrameBase::AttachMenuBar(wxMenuBar *menubar)
 509 {
 510     if ( menubar )
 511     {
 512         menubar->Attach((wxFrame *)this);
 513         m_frameMenuBar = menubar;
 514     }
 515 }
 516
 517 void wxFrameBase::SetMenuBar(wxMenuBar *menubar)
 518 {
 519     if ( menubar == GetMenuBar() )
 520     {
 521         // nothing to do
 522         return;
 523     }
 524
 525     DetachMenuBar();
 526
 527     this->AttachMenuBar(menubar);
 528 }
 529
 530 #endif // wxUSE_MENUS