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 // For compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/frame.h"
  28     #include "wx/menu.h"
  29     #include "wx/menuitem.h"
  30     #include "wx/dcclient.h"
  31 #endif // WX_PRECOMP
  32
  33 #if wxUSE_TOOLBAR
  34     #include "wx/toolbar.h"
  35 #endif
  36 #if wxUSE_STATUSBAR
  37     #include "wx/statusbr.h"
  38 #endif
  39
  40 // ----------------------------------------------------------------------------
  41 // event table
  42 // ----------------------------------------------------------------------------
  43
  44 #if wxUSE_MENUS && wxUSE_STATUSBAR
  45
  46 BEGIN_EVENT_TABLE(wxFrameBase, wxTopLevelWindow)
  47     EVT_MENU_OPEN(wxFrameBase::OnMenuOpen)
  48     EVT_MENU_CLOSE(wxFrameBase::OnMenuClose)
  49
  50     EVT_MENU_HIGHLIGHT_ALL(wxFrameBase::OnMenuHighlight)
  51 END_EVENT_TABLE()
  52
  53 #endif // wxUSE_MENUS && wxUSE_STATUSBAR
  54
  55 // ============================================================================
  56 // implementation
  57 // ============================================================================
  58
  59 // ----------------------------------------------------------------------------
  60 // construction/destruction
  61 // ----------------------------------------------------------------------------
  62
  63 wxFrameBase::wxFrameBase()
  64 {
  65 #if wxUSE_MENUS
  66     m_frameMenuBar = NULL;
  67 #endif // wxUSE_MENUS
  68
  69 #if wxUSE_TOOLBAR
  70     m_frameToolBar = NULL;
  71 #endif // wxUSE_TOOLBAR
  72
  73 #if wxUSE_STATUSBAR
  74     m_frameStatusBar = NULL;
  75 #endif // wxUSE_STATUSBAR
  76
  77     m_statusBarPane = 0;
  78 }
  79
  80 wxFrameBase::~wxFrameBase()
  81 {
  82     // this destructor is required for Darwin
  83 }
  84
  85 wxFrame *wxFrameBase::New(wxWindow *parent,
  86                           wxWindowID id,
  87                           const wxString& title,
  88                           const wxPoint& pos,
  89                           const wxSize& size,
  90                           long style,
  91                           const wxString& name)
  92 {
  93     return new wxFrame(parent, id, title, pos, size, style, name);
  94 }
  95
  96 void wxFrameBase::DeleteAllBars()
  97 {
  98 #if wxUSE_MENUS
  99     if ( m_frameMenuBar )
 100     {
 101         delete m_frameMenuBar;
 102         m_frameMenuBar = (wxMenuBar *) NULL;
 103     }
 104 #endif // wxUSE_MENUS
 105
 106 #if wxUSE_STATUSBAR
 107     if ( m_frameStatusBar )
 108     {
 109         delete m_frameStatusBar;
 110         m_frameStatusBar = (wxStatusBar *) NULL;
 111     }
 112 #endif // wxUSE_STATUSBAR
 113
 114 #if wxUSE_TOOLBAR
 115     if ( m_frameToolBar )
 116     {
 117         delete m_frameToolBar;
 118         m_frameToolBar = (wxToolBar *) NULL;
 119     }
 120 #endif // wxUSE_TOOLBAR
 121 }
 122
 123 bool wxFrameBase::IsOneOfBars(const wxWindow *win) const
 124 {
 125 #if wxUSE_MENUS
 126     if ( win == GetMenuBar() )
 127         return true;
 128 #endif // wxUSE_MENUS
 129
 130 #if wxUSE_STATUSBAR
 131     if ( win == GetStatusBar() )
 132         return true;
 133 #endif // wxUSE_STATUSBAR
 134
 135 #if wxUSE_TOOLBAR
 136     if ( win == GetToolBar() )
 137         return true;
 138 #endif // wxUSE_TOOLBAR
 139
 140     return false;
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // wxFrame size management: we exclude the areas taken by menu/status/toolbars
 145 // from the client area, so the client area is what's really available for the
 146 // frame contents
 147 // ----------------------------------------------------------------------------
 148
 149 // get the origin of the client area in the client coordinates
 150 wxPoint wxFrameBase::GetClientAreaOrigin() const
 151 {
 152     wxPoint pt = wxTopLevelWindow::GetClientAreaOrigin();
 153
 154 #if wxUSE_TOOLBAR && !defined(__WXUNIVERSAL__)
 155     wxToolBar *toolbar = GetToolBar();
 156     if ( toolbar && toolbar->IsShown() )
 157     {
 158         int w, h;
 159         toolbar->GetSize(&w, &h);
 160
 161         if ( toolbar->GetWindowStyleFlag() & wxTB_VERTICAL )
 162         {
 163             pt.x += w;
 164         }
 165         else
 166         {
 167             pt.y += h;
 168         }
 169     }
 170 #endif // wxUSE_TOOLBAR
 171
 172     return pt;
 173 }
 174
 175
 176 void wxFrameBase::SendSizeEvent()
 177 {
 178     wxSizeEvent event( GetSize(), GetId() );
 179     event.SetEventObject( this );
 180     GetEventHandler()->AddPendingEvent( event );
 181 }
 182
 183
 184 // ----------------------------------------------------------------------------
 185 // misc
 186 // ----------------------------------------------------------------------------
 187
 188 bool wxFrameBase::ProcessCommand(int id)
 189 {
 190 #if wxUSE_MENUS
 191     wxMenuBar *bar = GetMenuBar();
 192     if ( !bar )
 193         return false;
 194
 195     wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, id);
 196     commandEvent.SetEventObject(this);
 197
 198     wxMenuItem *item = bar->FindItem(id);
 199     if (item)
 200     {
 201         if (!item->IsEnabled())
 202             return true;
 203
 204         if ((item->GetKind() == wxITEM_RADIO) && item->IsChecked() )
 205             return true;
 206
 207         if (item->IsCheckable())
 208         {
 209             item->Toggle();
 210
 211             // use the new value
 212             commandEvent.SetInt(item->IsChecked());
 213         }
 214     }
 215
 216     GetEventHandler()->ProcessEvent(commandEvent);
 217     return true;
 218 #else // !wxUSE_MENUS
 219     return false;
 220 #endif // wxUSE_MENUS/!wxUSE_MENUS
 221 }
 222
 223 // Do the UI update processing for this window. This is
 224 // provided for the application to call if it wants to
 225 // force a UI update, particularly for the menus and toolbar.
 226 void wxFrameBase::UpdateWindowUI(long flags)
 227 {
 228     wxWindowBase::UpdateWindowUI(flags);
 229
 230 #if wxUSE_TOOLBAR
 231     if (GetToolBar())
 232         GetToolBar()->UpdateWindowUI(flags);
 233 #endif
 234
 235 #if wxUSE_MENUS
 236     if (GetMenuBar())
 237     {
 238         if ((flags & wxUPDATE_UI_FROMIDLE) && !wxUSE_IDLEMENUUPDATES)
 239         {
 240             // If coming from an idle event, we only
 241             // want to update the menus if we're
 242             // in the wxUSE_IDLEMENUUPDATES configuration:
 243             // so if we're not, do nothing
 244         }
 245         else
 246             DoMenuUpdates();
 247     }
 248 #endif // wxUSE_MENUS
 249 }
 250
 251 // ----------------------------------------------------------------------------
 252 // event handlers for status bar updates from menus
 253 // ----------------------------------------------------------------------------
 254
 255 #if wxUSE_MENUS && wxUSE_STATUSBAR
 256
 257 void wxFrameBase::OnMenuHighlight(wxMenuEvent& event)
 258 {
 259 #if wxUSE_STATUSBAR
 260     (void)ShowMenuHelp(GetStatusBar(), event.GetMenuId());
 261 #endif // wxUSE_STATUSBAR
 262 }
 263
 264 #if !wxUSE_IDLEMENUUPDATES
 265 void wxFrameBase::OnMenuOpen(wxMenuEvent& event)
 266 #else
 267 void wxFrameBase::OnMenuOpen(wxMenuEvent& WXUNUSED(event))
 268 #endif
 269 {
 270 #if !wxUSE_IDLEMENUUPDATES
 271     DoMenuUpdates(event.GetMenu());
 272 #endif // !wxUSE_IDLEMENUUPDATES
 273 }
 274
 275 void wxFrameBase::OnMenuClose(wxMenuEvent& WXUNUSED(event))
 276 {
 277     // do we have real status text to restore?
 278     if ( !m_oldStatusText.empty() )
 279     {
 280         if ( m_statusBarPane >= 0 )
 281         {
 282             wxStatusBar *statbar = GetStatusBar();
 283             if ( statbar )
 284                 statbar->SetStatusText(m_oldStatusText, m_statusBarPane);
 285         }
 286
 287         m_oldStatusText.clear();
 288     }
 289 }
 290
 291 #endif // wxUSE_MENUS && wxUSE_STATUSBAR
 292
 293 // Implement internal behaviour (menu updating on some platforms)
 294 void wxFrameBase::OnInternalIdle()
 295 {
 296     wxTopLevelWindow::OnInternalIdle();
 297
 298 #if wxUSE_MENUS && wxUSE_IDLEMENUUPDATES
 299     if (wxUpdateUIEvent::CanUpdate(this))
 300         DoMenuUpdates();
 301 #endif
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // status bar stuff
 306 // ----------------------------------------------------------------------------
 307
 308 #if wxUSE_STATUSBAR
 309
 310 wxStatusBar* wxFrameBase::CreateStatusBar(int number,
 311                                           long style,
 312                                           wxWindowID id,
 313                                           const wxString& name)
 314 {
 315     // the main status bar can only be created once (or else it should be
 316     // deleted before calling CreateStatusBar() again)
 317     wxCHECK_MSG( !m_frameStatusBar, (wxStatusBar *)NULL,
 318                  wxT("recreating status bar in wxFrame") );
 319
 320     SetStatusBar(OnCreateStatusBar(number, style, id, name));
 321
 322     return m_frameStatusBar;
 323 }
 324
 325 wxStatusBar *wxFrameBase::OnCreateStatusBar(int number,
 326                                             long style,
 327                                             wxWindowID id,
 328                                             const wxString& name)
 329 {
 330     wxStatusBar *statusBar = new wxStatusBar(this, id, style, name);
 331
 332     statusBar->SetFieldsCount(number);
 333
 334     return statusBar;
 335 }
 336
 337 void wxFrameBase::SetStatusText(const wxString& text, int number)
 338 {
 339     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 340
 341     m_frameStatusBar->SetStatusText(text, number);
 342 }
 343
 344 void wxFrameBase::SetStatusWidths(int n, const int widths_field[] )
 345 {
 346     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set widths for") );
 347
 348     m_frameStatusBar->SetStatusWidths(n, widths_field);
 349
 350     PositionStatusBar();
 351 }
 352
 353 void wxFrameBase::PushStatusText(const wxString& text, int number)
 354 {
 355     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 356
 357     m_frameStatusBar->PushStatusText(text, number);
 358 }
 359
 360 void wxFrameBase::PopStatusText(int number)
 361 {
 362     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 363
 364     m_frameStatusBar->PopStatusText(number);
 365 }
 366
 367 bool wxFrameBase::ShowMenuHelp(wxStatusBar *WXUNUSED(statbar), int menuId)
 368 {
 369 #if wxUSE_MENUS
 370     // if no help string found, we will clear the status bar text
 371     wxString helpString;
 372     bool show = menuId != wxID_SEPARATOR && menuId != -2 /* wxID_TITLE */;
 373
 374     if ( show )
 375     {
 376         wxMenuBar *menuBar = GetMenuBar();
 377         if ( menuBar )
 378         {
 379             // it's ok if we don't find the item because it might belong
 380             // to the popup menu
 381             wxMenuItem *item = menuBar->FindItem(menuId);
 382             if ( item )
 383                 helpString = item->GetHelp();
 384         }
 385     }
 386
 387     DoGiveHelp(helpString, show);
 388
 389     return !helpString.empty();
 390 #else // !wxUSE_MENUS
 391     return false;
 392 #endif // wxUSE_MENUS/!wxUSE_MENUS
 393 }
 394
 395 void wxFrameBase::SetStatusBar(wxStatusBar *statBar)
 396 {
 397     bool hadBar = m_frameStatusBar != NULL;
 398     m_frameStatusBar = statBar;
 399
 400     if ( (m_frameStatusBar != NULL) != hadBar )
 401     {
 402         PositionStatusBar();
 403
 404         DoLayout();
 405     }
 406 }
 407
 408 #endif // wxUSE_STATUSBAR
 409
 410 void wxFrameBase::DoGiveHelp(const wxString& text, bool show)
 411 {
 412 #if wxUSE_STATUSBAR
 413     if ( m_statusBarPane < 0 )
 414     {
 415         // status bar messages disabled
 416         return;
 417     }
 418
 419     wxStatusBar *statbar = GetStatusBar();
 420     if ( !statbar )
 421         return;
 422
 423     wxString help;
 424     if ( show )
 425         help = text;
 426
 427     // remember the old status bar text if this is the first time we're called
 428     // since the menu has been opened as we're going to overwrite it in our
 429     // DoGiveHelp() and we want to restore it when the menu is closed
 430     //
 431     // note that it would be logical to do this in OnMenuOpen() but under MSW
 432     // we get an EVT_MENU_HIGHLIGHT before EVT_MENU_OPEN, strangely enough, and
 433     // so this doesn't work and instead we use the ugly trick with using
 434     // special m_oldStatusText value as "menu opened" (but it is arguably
 435     // better than adding yet another member variable to wxFrame on all
 436     // platforms)
 437     if ( m_oldStatusText.empty() )
 438     {
 439         m_oldStatusText = statbar->GetStatusText(m_statusBarPane);
 440         if ( m_oldStatusText.empty() )
 441         {
 442             // use special value to prevent us from doing this the next time
 443             m_oldStatusText += _T('\0');
 444         }
 445     }
 446
 447     statbar->SetStatusText(help, m_statusBarPane);
 448 #else
 449     wxUnusedVar(text);
 450     wxUnusedVar(show);
 451 #endif // wxUSE_STATUSBAR
 452 }
 453
 454
 455 // ----------------------------------------------------------------------------
 456 // toolbar stuff
 457 // ----------------------------------------------------------------------------
 458
 459 #if wxUSE_TOOLBAR
 460
 461 wxToolBar* wxFrameBase::CreateToolBar(long style,
 462                                       wxWindowID id,
 463                                       const wxString& name)
 464 {
 465     // the main toolbar can't be recreated (unless it was explicitly deeleted
 466     // before)
 467     wxCHECK_MSG( !m_frameToolBar, (wxToolBar *)NULL,
 468                  wxT("recreating toolbar in wxFrame") );
 469
 470     if ( style == -1 )
 471     {
 472         // use default style
 473         //
 474         // NB: we don't specify the default value in the method declaration
 475         //     because
 476         //      a) this allows us to have different defaults for different
 477         //         platforms (even if we don't have them right now)
 478         //      b) we don't need to include wx/toolbar.h in the header then
 479         style = wxBORDER_NONE | wxTB_HORIZONTAL | wxTB_FLAT;
 480     }
 481
 482     SetToolBar(OnCreateToolBar(style, id, name));
 483
 484     return m_frameToolBar;
 485 }
 486
 487 wxToolBar* wxFrameBase::OnCreateToolBar(long style,
 488                                         wxWindowID id,
 489                                         const wxString& name)
 490 {
 491 #if defined(__WXWINCE__) && defined(__POCKETPC__)
 492     return new wxToolMenuBar(this, id,
 493                          wxDefaultPosition, wxDefaultSize,
 494                          style, name);
 495 #else
 496     return new wxToolBar(this, id,
 497                          wxDefaultPosition, wxDefaultSize,
 498                          style, name);
 499 #endif
 500 }
 501
 502 void wxFrameBase::SetToolBar(wxToolBar *toolbar)
 503 {
 504     bool hadBar = m_frameToolBar != NULL;
 505     m_frameToolBar = toolbar;
 506
 507     if ( (m_frameToolBar != NULL) != hadBar )
 508     {
 509         PositionToolBar();
 510
 511         DoLayout();
 512     }
 513 }
 514
 515 #endif // wxUSE_TOOLBAR
 516
 517 // ----------------------------------------------------------------------------
 518 // menus
 519 // ----------------------------------------------------------------------------
 520
 521 #if wxUSE_MENUS
 522
 523 // update all menus
 524 void wxFrameBase::DoMenuUpdates(wxMenu* menu)
 525 {
 526     wxEvtHandler* source = GetEventHandler();
 527     wxMenuBar* bar = GetMenuBar();
 528
 529     if (menu)
 530         menu->UpdateUI(source);
 531     else if ( bar != NULL )
 532     {
 533         int nCount = bar->GetMenuCount();
 534         for (int n = 0; n < nCount; n++)
 535             bar->GetMenu(n)->UpdateUI(source);
 536     }
 537 }
 538
 539 void wxFrameBase::DetachMenuBar()
 540 {
 541     if ( m_frameMenuBar )
 542     {
 543         m_frameMenuBar->Detach();
 544         m_frameMenuBar = NULL;
 545     }
 546 }
 547
 548 void wxFrameBase::AttachMenuBar(wxMenuBar *menubar)
 549 {
 550     if ( menubar )
 551     {
 552         menubar->Attach((wxFrame *)this);
 553         m_frameMenuBar = menubar;
 554     }
 555 }
 556
 557 void wxFrameBase::SetMenuBar(wxMenuBar *menubar)
 558 {
 559     if ( menubar == GetMenuBar() )
 560     {
 561         // nothing to do
 562         return;
 563     }
 564
 565     DetachMenuBar();
 566
 567     this->AttachMenuBar(menubar);
 568 }
 569
 570 #endif // wxUSE_MENUS