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     wxToolBar *toolbar = GetToolBar();
 160     if ( toolbar && toolbar->IsShown() )
 161     {
 162         int w, h;
 163         toolbar->GetSize(&w, &h);
 164
 165         if ( toolbar->GetWindowStyleFlag() & wxTB_VERTICAL )
 166         {
 167             pt.x += w;
 168         }
 169         else
 170         {
 171             pt.y += h;
 172         }
 173     }
 174 #endif // wxUSE_TOOLBAR
 175
 176     return pt;
 177 }
 178
 179
 180 void wxFrameBase::SendSizeEvent()
 181 {
 182     wxSizeEvent event( GetSize(), GetId() );
 183     event.SetEventObject( this );
 184     GetEventHandler()->AddPendingEvent( event );
 185 }
 186
 187
 188 // ----------------------------------------------------------------------------
 189 // misc
 190 // ----------------------------------------------------------------------------
 191
 192 bool wxFrameBase::ProcessCommand(int id)
 193 {
 194 #if wxUSE_MENUS
 195     wxMenuBar *bar = GetMenuBar();
 196     if ( !bar )
 197         return false;
 198
 199     wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, id);
 200     commandEvent.SetEventObject(this);
 201
 202     wxMenuItem *item = bar->FindItem(id);
 203     if (item)
 204     {
 205         if (!item->IsEnabled())
 206             return true;
 207
 208         if (item->IsCheckable())
 209         {
 210             item->Toggle();
 211
 212             // use the new value
 213             commandEvent.SetInt(item->IsChecked());
 214         }
 215     }
 216
 217     GetEventHandler()->ProcessEvent(commandEvent);
 218     return true;
 219 #else // !wxUSE_MENUS
 220     return false;
 221 #endif // wxUSE_MENUS/!wxUSE_MENUS
 222 }
 223
 224 // Do the UI update processing for this window. This is
 225 // provided for the application to call if it wants to
 226 // force a UI update, particularly for the menus and toolbar.
 227 void wxFrameBase::UpdateWindowUI(long flags)
 228 {
 229     wxWindowBase::UpdateWindowUI(flags);
 230
 231 #if wxUSE_TOOLBAR
 232     if (GetToolBar())
 233         GetToolBar()->UpdateWindowUI(flags);
 234 #endif
 235
 236 #if wxUSE_MENUS
 237     if (GetMenuBar())
 238     {
 239         if ((flags & wxUPDATE_UI_FROMIDLE) && !wxUSE_IDLEMENUUPDATES)
 240         {
 241             // If coming from an idle event, we only
 242             // want to update the menus if we're
 243             // in the wxUSE_IDLEMENUUPDATES configuration:
 244             // so if we're not, do nothing
 245         }
 246         else
 247             DoMenuUpdates();
 248     }
 249 #endif // wxUSE_MENUS
 250 }
 251
 252 // ----------------------------------------------------------------------------
 253 // event handlers for status bar updates from menus
 254 // ----------------------------------------------------------------------------
 255
 256 #if wxUSE_MENUS && wxUSE_STATUSBAR
 257
 258 void wxFrameBase::OnMenuHighlight(wxMenuEvent& event)
 259 {
 260 #if wxUSE_STATUSBAR
 261     (void)ShowMenuHelp(GetStatusBar(), event.GetMenuId());
 262 #endif // wxUSE_STATUSBAR
 263 }
 264
 265 #if !wxUSE_IDLEMENUUPDATES
 266 void wxFrameBase::OnMenuOpen(wxMenuEvent& event)
 267 #else
 268 void wxFrameBase::OnMenuOpen(wxMenuEvent& WXUNUSED(event))
 269 #endif
 270 {
 271 #if !wxUSE_IDLEMENUUPDATES
 272     DoMenuUpdates(event.GetMenu());
 273 #endif // !wxUSE_IDLEMENUUPDATES
 274 }
 275
 276 void wxFrameBase::OnMenuClose(wxMenuEvent& WXUNUSED(event))
 277 {
 278     // do we have real status text to restore?
 279     if ( m_oldStatusText.length() > 1 || m_oldStatusText[0u] )
 280     {
 281         if ( m_statusBarPane >= 0 )
 282         {
 283             wxStatusBar *statbar = GetStatusBar();
 284             if ( statbar )
 285                 statbar->SetStatusText(m_oldStatusText, m_statusBarPane);
 286         }
 287
 288         m_oldStatusText.clear();
 289     }
 290 }
 291
 292 #endif // wxUSE_MENUS && wxUSE_STATUSBAR
 293
 294 // Implement internal behaviour (menu updating on some platforms)
 295 void wxFrameBase::OnInternalIdle()
 296 {
 297     wxTopLevelWindow::OnInternalIdle();
 298
 299 #if wxUSE_MENUS && wxUSE_IDLEMENUUPDATES
 300     if (wxUpdateUIEvent::CanUpdate(this))
 301         DoMenuUpdates();
 302 #endif
 303 }
 304
 305 // ----------------------------------------------------------------------------
 306 // status bar stuff
 307 // ----------------------------------------------------------------------------
 308
 309 #if wxUSE_STATUSBAR
 310
 311 wxStatusBar* wxFrameBase::CreateStatusBar(int number,
 312                                           long style,
 313                                           wxWindowID id,
 314                                           const wxString& name)
 315 {
 316     // the main status bar can only be created once (or else it should be
 317     // deleted before calling CreateStatusBar() again)
 318     wxCHECK_MSG( !m_frameStatusBar, (wxStatusBar *)NULL,
 319                  wxT("recreating status bar in wxFrame") );
 320
 321     SetStatusBar(OnCreateStatusBar(number, style, id, name));
 322
 323     return m_frameStatusBar;
 324 }
 325
 326 wxStatusBar *wxFrameBase::OnCreateStatusBar(int number,
 327                                             long style,
 328                                             wxWindowID id,
 329                                             const wxString& name)
 330 {
 331     wxStatusBar *statusBar = new wxStatusBar(this, id, style, name);
 332
 333     statusBar->SetFieldsCount(number);
 334
 335     return statusBar;
 336 }
 337
 338 void wxFrameBase::SetStatusText(const wxString& text, int number)
 339 {
 340     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 341
 342     m_frameStatusBar->SetStatusText(text, number);
 343 }
 344
 345 void wxFrameBase::SetStatusWidths(int n, const int widths_field[] )
 346 {
 347     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set widths for") );
 348
 349     m_frameStatusBar->SetStatusWidths(n, widths_field);
 350
 351     PositionStatusBar();
 352 }
 353
 354 void wxFrameBase::PushStatusText(const wxString& text, int number)
 355 {
 356     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 357
 358     m_frameStatusBar->PushStatusText(text, number);
 359 }
 360
 361 void wxFrameBase::PopStatusText(int number)
 362 {
 363     wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
 364
 365     m_frameStatusBar->PopStatusText(number);
 366 }
 367
 368 bool wxFrameBase::ShowMenuHelp(wxStatusBar *WXUNUSED(statbar), int menuId)
 369 {
 370 #if wxUSE_MENUS
 371     // if no help string found, we will clear the status bar text
 372     wxString helpString;
 373     bool show = menuId != wxID_SEPARATOR && menuId != -2 /* wxID_TITLE */;
 374
 375     if ( show )
 376     {
 377         wxMenuBar *menuBar = GetMenuBar();
 378         if ( menuBar )
 379         {
 380             // it's ok if we don't find the item because it might belong
 381             // to the popup menu
 382             wxMenuItem *item = menuBar->FindItem(menuId);
 383             if ( item )
 384                 helpString = item->GetHelp();
 385         }
 386     }
 387
 388     DoGiveHelp(helpString, show);
 389
 390     return !helpString.IsEmpty();
 391 #else // !wxUSE_MENUS
 392     return false;
 393 #endif // wxUSE_MENUS/!wxUSE_MENUS
 394 }
 395
 396 void wxFrameBase::SetStatusBar(wxStatusBar *statBar)
 397 {
 398     bool hadBar = m_frameStatusBar != NULL;
 399     m_frameStatusBar = statBar;
 400
 401     if ( (m_frameStatusBar != NULL) != hadBar )
 402     {
 403         PositionStatusBar();
 404
 405         DoLayout();
 406     }
 407 }
 408
 409 #endif // wxUSE_STATUSBAR
 410
 411 void wxFrameBase::DoGiveHelp(const wxString& text, bool show)
 412 {
 413 #if wxUSE_STATUSBAR
 414     if ( m_statusBarPane < 0 )
 415     {
 416         // status bar messages disabled
 417         return;
 418     }
 419
 420     wxStatusBar *statbar = GetStatusBar();
 421     if ( !statbar )
 422         return;
 423
 424     wxString help;
 425     if ( show )
 426         help = text;
 427
 428     // remember the old status bar text if this is the first time we're called
 429     // since the menu has been opened as we're going to overwrite it in our
 430     // DoGiveHelp() and we want to restore it when the menu is closed
 431     //
 432     // note that it would be logical to do this in OnMenuOpen() but under MSW
 433     // we get an EVT_MENU_HIGHLIGHT before EVT_MENU_OPEN, strangely enough, and
 434     // so this doesn't work and instead we use the ugly trick with using
 435     // special m_oldStatusText value as "menu opened" (but it is arguably
 436     // better than adding yet another member variable to wxFrame on all
 437     // platforms)
 438     if ( m_oldStatusText.empty() )
 439     {
 440         m_oldStatusText = statbar->GetStatusText(m_statusBarPane);
 441         if ( m_oldStatusText.empty() )
 442         {
 443             // use special value to prevent us from doing this the next time
 444             m_oldStatusText += _T('\0');
 445         }
 446     }
 447
 448     statbar->SetStatusText(help, m_statusBarPane);
 449 #else
 450     wxUnusedVar(text);
 451     wxUnusedVar(show);
 452 #endif // wxUSE_STATUSBAR
 453 }
 454
 455
 456 // ----------------------------------------------------------------------------
 457 // toolbar stuff
 458 // ----------------------------------------------------------------------------
 459
 460 #if wxUSE_TOOLBAR
 461
 462 wxToolBar* wxFrameBase::CreateToolBar(long style,
 463                                       wxWindowID id,
 464                                       const wxString& name)
 465 {
 466     // the main toolbar can't be recreated (unless it was explicitly deeleted
 467     // before)
 468     wxCHECK_MSG( !m_frameToolBar, (wxToolBar *)NULL,
 469                  wxT("recreating toolbar in wxFrame") );
 470
 471     if ( style == -1 )
 472     {
 473         // use default style
 474         //
 475         // NB: we don't specify the default value in the method declaration
 476         //     because
 477         //      a) this allows us to have different defaults for different
 478         //         platforms (even if we don't have them right now)
 479         //      b) we don't need to include wx/toolbar.h in the header then
 480         style = wxBORDER_NONE | wxTB_HORIZONTAL | wxTB_FLAT;
 481     }
 482
 483     SetToolBar(OnCreateToolBar(style, id, name));
 484
 485     return m_frameToolBar;
 486 }
 487
 488 wxToolBar* wxFrameBase::OnCreateToolBar(long style,
 489                                         wxWindowID id,
 490                                         const wxString& name)
 491 {
 492     return new wxToolBar(this, id,
 493                          wxDefaultPosition, wxDefaultSize,
 494                          style, name);
 495 }
 496
 497 void wxFrameBase::SetToolBar(wxToolBar *toolbar)
 498 {
 499     bool hadBar = m_frameToolBar != NULL;
 500     m_frameToolBar = toolbar;
 501
 502     if ( (m_frameToolBar != NULL) != hadBar )
 503     {
 504         PositionToolBar();
 505
 506         DoLayout();
 507     }
 508 }
 509
 510 #endif // wxUSE_TOOLBAR
 511
 512 // ----------------------------------------------------------------------------
 513 // menus
 514 // ----------------------------------------------------------------------------
 515
 516 #if wxUSE_MENUS
 517
 518 // update all menus
 519 void wxFrameBase::DoMenuUpdates(wxMenu* menu)
 520 {
 521     wxEvtHandler* source = GetEventHandler();
 522     wxMenuBar* bar = GetMenuBar();
 523
 524     if (menu)
 525         menu->UpdateUI(source);
 526     else if ( bar != NULL )
 527     {
 528         int nCount = bar->GetMenuCount();
 529         for (int n = 0; n < nCount; n++)
 530             bar->GetMenu(n)->UpdateUI(source);
 531     }
 532 }
 533
 534 void wxFrameBase::DetachMenuBar()
 535 {
 536     if ( m_frameMenuBar )
 537     {
 538         m_frameMenuBar->Detach();
 539         m_frameMenuBar = NULL;
 540     }
 541 }
 542
 543 void wxFrameBase::AttachMenuBar(wxMenuBar *menubar)
 544 {
 545     if ( menubar )
 546     {
 547         menubar->Attach((wxFrame *)this);
 548         m_frameMenuBar = menubar;
 549     }
 550 }
 551
 552 void wxFrameBase::SetMenuBar(wxMenuBar *menubar)
 553 {
 554     if ( menubar == GetMenuBar() )
 555     {
 556         // nothing to do
 557         return;
 558     }
 559
 560     DetachMenuBar();
 561
 562     this->AttachMenuBar(menubar);
 563 }
 564
 565 #endif // wxUSE_MENUS