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